/* roulang page: index */
:root{
  --bg-900:#0A0C12;
  --bg-800:#101423;
  --surface:#161A2B;
  --surface-2:#1D2236;
  --line:rgba(255,255,255,.08);
  --brand-a:#12E0A0;
  --brand-b:#7C4DFF;
  --accent:#FF4D9D;
  --warm:#FFB84D;
  --success:#34D399;
  --danger:#FF5C7A;
  --text:#F2F5FF;
  --text-2:#A8B0C8;
  --text-3:#6E768F;
  --grad-hero:linear-gradient(135deg,#12E0A0 0%,#7C4DFF 100%);
  --grad-cta:linear-gradient(90deg,#FF4D9D 0%,#7C4DFF 100%);
  --glow-a:0 0 24px rgba(18,224,160,.35);
  --glow-c:0 0 18px rgba(255,77,157,.45);
  --shadow:0 18px 48px rgba(0,0,0,.45);
  --r-lg:24px;
  --r-md:20px;
  --r-sm:14px;
  --container:1280px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text);
  font-family:"HarmonyOS Sans","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--brand-a);outline-offset:2px;border-radius:6px}
::selection{background:rgba(124,77,255,.4);color:#fff}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.grad-text{background:var(--grad-hero);-webkit-background-clip:text;background-clip:text;color:transparent}
.num{font-variant-numeric:tabular-nums;font-family:"JetBrains Mono","SFMono-Regular",Consolas,monospace}

/* ============ header / nav ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(10,12,18,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(18,224,160,.5),rgba(124,77,255,.5),transparent);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:var(--grad-hero);color:#08110E;font-weight:800;font-size:17px;
  box-shadow:var(--glow-a);
}
.brand-text{font-size:19px;font-weight:800;letter-spacing:.01em;background:var(--grad-hero);-webkit-background-clip:text;background-clip:text;color:transparent;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 14px;
  font-size:14.5px;color:var(--text-2);border-radius:10px;transition:color .22s,background .22s;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--grad-hero);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{
  color:transparent;background:rgba(124,77,255,.12);
  background-image:var(--grad-hero);
  -webkit-background-clip:text;background-clip:text;
  box-shadow:inset 0 -1px 0 rgba(18,224,160,.5);
}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);place-items:center}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);margin:3px auto;transition:.25s}
.nav-toggle.open span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-weight:700;font-size:15px;
  padding:13px 26px;border:1px solid transparent;
  transition:transform .2s,box-shadow .2s,background .2s,border-color .2s,color .2s;
  white-space:nowrap;
}
.btn-primary{background:var(--grad-cta);color:#fff;box-shadow:var(--glow-c)}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-ghost{background:rgba(255,255,255,.02);border-color:rgba(255,255,255,.16);color:var(--text)}
.btn-ghost:hover{border-color:rgba(18,224,160,.6);color:#fff;transform:translateY(-2px);box-shadow:var(--glow-a)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand-a);font-weight:700;font-size:14.5px}
.btn-text .arrow{transition:transform .22s}
.btn-text:hover .arrow{transform:translateX(4px)}

/* ============ hero ============ */
.hero{position:relative;overflow:hidden;padding:88px 0 76px;display:flex;align-items:center;min-height:78vh;background:var(--bg-900)}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.3}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(10,12,18,.97) 0%,rgba(10,12,18,.86) 44%,rgba(10,12,18,.58) 100%)}
.hero-grid-tex{
  position:absolute;inset:0;opacity:.05;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:64px 64px;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;margin-bottom:22px;
  border-radius:999px;border:1px solid rgba(18,224,160,.35);background:rgba(18,224,160,.08);
  color:var(--brand-a);font-size:13px;font-weight:600;letter-spacing:.04em;
}
.hero-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-a);box-shadow:0 0 10px var(--brand-a)}
.hero h1{font-size:clamp(30px,4.2vw,54px);line-height:1.18;font-weight:800;letter-spacing:-.01em}
.hero-sub{margin-top:20px;font-size:17px;color:var(--text-2);max-width:540px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:44px}
.badge{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 15px;border-radius:999px;
  border:1px solid rgba(255,255,255,.12);background:rgba(22,26,43,.7);font-size:13px;color:var(--text-2);
}
.badge b{font-size:15px;background:var(--grad-hero);-webkit-background-clip:text;background-clip:text;color:transparent}
.badge.warm{border-color:rgba(255,184,77,.35)}
.badge.warm b{color:var(--warm);background:none;-webkit-text-fill-color:var(--warm)}
.badge.ok{border-color:rgba(52,211,153,.35)}
.badge.ok b{color:var(--success);background:none;-webkit-text-fill-color:var(--success)}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);
  border:1px solid rgba(255,255,255,.1);box-shadow:var(--shadow);
}
.hero-visual::after{
  content:"";position:absolute;inset:-1px;border-radius:var(--r-lg);pointer-events:none;
  background:linear-gradient(135deg,rgba(18,224,160,.35),transparent 45%,rgba(124,77,255,.3));
  mix-blend-mode:screen;opacity:.5;
}

/* ============ sections ============ */
.section{padding:96px 0;position:relative}
.section-alt{background:var(--bg-800)}
.section-head{max-width:760px;margin-bottom:52px}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--brand-a);margin-bottom:14px;
}
.section-head h2{font-size:clamp(24px,3vw,38px);line-height:1.25;font-weight:800}
.section-head p{margin-top:16px;color:var(--text-2);font-size:16.5px}
.hr-line{height:1px;border:0;margin:0;background:linear-gradient(90deg,transparent,rgba(18,224,160,.45),rgba(124,77,255,.45),transparent)}

/* ============ feature groups ============ */
.feat-group{display:grid;gap:24px;margin-bottom:28px}
.feat-group.g-a{grid-template-columns:7fr 5fr}
.feat-group.g-b{grid-template-columns:5fr 7fr}
.feat-group:last-child{margin-bottom:0}
.feat-stack{display:grid;gap:24px}
.card{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:32px;box-shadow:var(--shadow);transition:transform .28s,border-color .28s,box-shadow .28s;
  overflow:hidden;
}
.card:hover{transform:translateY(-4px);border-color:rgba(124,77,255,.45);box-shadow:0 22px 56px rgba(0,0,0,.5),0 0 22px rgba(124,77,255,.18)}
.card-lg{padding:38px;background:linear-gradient(160deg,var(--surface-2),var(--surface) 65%)}
.card-icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;margin-bottom:20px;
  background:rgba(18,224,160,.1);border:1px solid rgba(18,224,160,.3);color:var(--brand-a);font-size:19px;font-weight:800;
}
.card-icon.violet{background:rgba(124,77,255,.12);border-color:rgba(124,77,255,.36);color:#B79CFF}
.card-icon.pink{background:rgba(255,77,157,.1);border-color:rgba(255,77,157,.32);color:#FF8CC0}
.card h3{font-size:20px;font-weight:800;line-height:1.4}
.card-lg h3{font-size:25px}
.card p{margin-top:12px;color:var(--text-2);font-size:15.5px;line-height:1.85}
.card-img{margin-top:24px;width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-md);border:1px solid var(--line)}
.point-list{margin-top:20px;display:grid;gap:10px}
.point-list li{position:relative;padding-left:20px;color:var(--text-2);font-size:14.8px}
.point-list li::before{content:"";position:absolute;left:0;top:12px;width:8px;height:2px;border-radius:2px;background:var(--grad-hero)}

/* ============ scene grid ============ */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.scene-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px 24px;transition:transform .26s,border-color .26s,background .26s;
}
.scene-card:hover{transform:translateY(-4px);border-color:rgba(18,224,160,.42);background:var(--surface-2)}
.scene-card .idx{font-size:13px;font-weight:700;color:var(--text-3);letter-spacing:.12em}
.scene-card h3{margin-top:14px;font-size:18px;font-weight:700}
.scene-card p{margin-top:10px;font-size:14.8px;color:var(--text-2)}

/* ============ cases ============ */
.case-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.case-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  transition:transform .28s,border-color .28s;
}
.case-card:hover{transform:translateY(-4px);border-color:rgba(255,77,157,.38)}
.case-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.case-body{padding:28px 30px 32px}
.case-body h3{font-size:20px;font-weight:800;line-height:1.45}
.case-body p{margin-top:12px;color:var(--text-2);font-size:15.2px}
.case-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.case-note{margin-top:16px;font-size:12.5px;color:var(--text-3)}

/* ============ CMS posts ============ */
.post-grid{display:grid;grid-template-columns:6fr 5fr;gap:24px}
.post-feature{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;transition:transform .28s,border-color .28s;
}
.post-feature:hover{transform:translateY(-4px);border-color:rgba(18,224,160,.45)}
.post-feature img{width:100%;aspect-ratio:16/9;object-fit:cover}
.post-feature .pf-body{padding:28px 30px 32px}
.post-feature h3{font-size:22px;font-weight:800;line-height:1.45}
.post-feature p{margin-top:12px;color:var(--text-2);font-size:15.2px}
.post-stack{display:grid;gap:16px;align-content:start}
.post-item{
  display:flex;gap:18px;align-items:flex-start;padding:18px 20px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  transition:transform .24s,border-color .24s,background .24s;
}
.post-item:hover{transform:translateY(-4px);border-color:rgba(124,77,255,.45);background:var(--surface-2)}
.post-item img{width:104px;aspect-ratio:1/1;object-fit:cover;border-radius:14px;flex-shrink:0}
.post-item .pi-body{min-width:0;flex:1}
.post-item h3{
  font-size:16.5px;font-weight:700;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-item p{
  margin-top:8px;font-size:14px;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:14px;font-size:13px;color:var(--text-3)}
.post-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3)}
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  border:1px solid rgba(18,224,160,.32);background:rgba(18,224,160,.07);color:var(--brand-a);
  font-size:12.5px;font-weight:600;
}
.post-arrow{margin-left:auto;color:var(--brand-a);transition:transform .22s}
.post-item:hover .post-arrow{transform:translateX(4px)}
.empty-state{
  border:1px dashed rgba(255,255,255,.16);border-radius:var(--r-lg);padding:56px 28px;text-align:center;
  background:rgba(22,26,43,.55);
}
.empty-state .es-icon{
  width:54px;height:54px;margin:0 auto 18px;border-radius:16px;display:grid;place-items:center;
  background:rgba(124,77,255,.12);border:1px solid rgba(124,77,255,.35);color:#B79CFF;font-size:22px;font-weight:800;
}
.empty-state p{color:var(--text-2);margin-bottom:22px}

/* ============ pricing ============ */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.price-card{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:34px 30px;transition:transform .28s,border-color .28s,box-shadow .28s;
}
.price-card:hover{transform:translateY(-4px);border-color:rgba(18,224,160,.42)}
.price-card.featured{
  border-color:rgba(255,77,157,.55);
  background:linear-gradient(170deg,rgba(255,77,157,.1),rgba(124,77,255,.08) 45%,var(--surface) 80%);
  box-shadow:var(--shadow),0 0 26px rgba(255,77,157,.22);
}
.price-badge{
  position:absolute;top:-13px;left:50%;transform:translateX(-50%);
  height:28px;padding:0 16px;border-radius:999px;display:inline-flex;align-items:center;
  background:var(--grad-cta);color:#fff;font-size:12.5px;font-weight:700;white-space:nowrap;
}
.price-card h3{font-size:19px;font-weight:800}
.price-amount{margin-top:18px;display:flex;align-items:baseline;gap:6px}
.price-amount b{font-size:38px;font-weight:800;background:var(--grad-hero);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.price-amount span{font-size:13.5px;color:var(--text-3)}
.price-card > p{margin-top:14px;color:var(--text-2);font-size:14.6px}
.price-card .btn{margin-top:26px}
.price-list{margin-top:26px;display:grid;gap:11px;padding-top:24px;border-top:1px solid var(--line)}
.price-list li{position:relative;padding-left:22px;font-size:14.6px;color:var(--text-2)}
.price-list li::before{content:"✓";position:absolute;left:0;top:0;color:var(--brand-a);font-weight:700}
.compare{margin-top:34px;border:1px solid var(--line);border-radius:var(--r-md);background:rgba(22,26,43,.6);overflow:hidden}
.compare summary{
  cursor:pointer;list-style:none;padding:20px 26px;font-weight:700;font-size:16px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.compare summary::-webkit-details-marker{display:none}
.compare summary::after{content:"＋";color:var(--brand-a);font-size:18px;transition:transform .25s}
.compare[open] summary::after{transform:rotate(45deg)}
.table-scroll{overflow-x:auto;border-top:1px solid var(--line)}
table.cmp{min-width:640px;font-size:14.5px}
table.cmp th,table.cmp td{padding:15px 22px;text-align:left;border-bottom:1px solid var(--line);color:var(--text-2)}
table.cmp th{color:var(--text);font-weight:700;background:rgba(255,255,255,.02)}
table.cmp tr:last-child td{border-bottom:0}

/* ============ faq ============ */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-sm);background:var(--surface);
  overflow:hidden;transition:border-color .25s,background .25s;
}
.faq-item[open]{border-color:rgba(18,224,160,.42);background:var(--surface-2)}
.faq-item summary{
  cursor:pointer;list-style:none;padding:20px 26px 20px 30px;font-size:17px;font-weight:600;
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;
  background:var(--grad-hero);opacity:0;transition:opacity .25s;
}
.faq-item[open] summary::before{opacity:1}
.faq-item summary::after{content:"＋";color:var(--brand-a);font-weight:700;flex-shrink:0;transition:transform .25s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{padding:0 26px 24px 30px;color:var(--text-2);font-size:15px;line-height:1.8}

/* ============ cta band ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);border:1px solid rgba(124,77,255,.35);
  padding:56px 48px;display:grid;grid-template-columns:1.3fr .7fr;gap:32px;align-items:center;
  background:linear-gradient(120deg,rgba(18,224,160,.12),rgba(124,77,255,.16) 55%,rgba(255,77,157,.12));
}
.cta-band h2{font-size:clamp(22px,2.6vw,32px);font-weight:800;line-height:1.3}
.cta-band p{margin-top:14px;color:var(--text-2);font-size:15.6px;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.cta-side{display:grid;gap:12px}
.cta-side .badge{background:rgba(10,12,18,.5);height:36px}

/* ============ footer ============ */
.site-footer{background:var(--bg-800);border-top:1px solid var(--line);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{color:var(--text-2);font-size:14.6px;max-width:320px}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:18px;color:var(--text)}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14.5px;color:var(--text-2);position:relative;transition:color .22s}
.footer-col a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:var(--grad-hero);
  transform:scaleX(0);transform-origin:left;transition:transform .25s;
}
.footer-col a:hover{color:var(--text)}
.footer-col a:hover::after{transform:scaleX(1)}
.footer-contact li{color:var(--text-2);font-size:14.5px;display:flex;gap:10px}
.footer-contact li b{color:var(--text);font-weight:600;min-width:60px}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13.5px;color:var(--text-3);
}

/* ============ responsive ============ */
@media (max-width:1280px){
  .container{padding:0 22px}
}
@media (max-width:1024px){
  .nav-menu{
    position:fixed;inset:60px 0 0;background:rgba(10,12,18,.98);backdrop-filter:blur(18px);
    flex-direction:column;align-items:stretch;gap:4px;padding:26px 24px;
    transform:translateX(100%);transition:transform .32s ease;overflow-y:auto;
  }
  .nav-menu.open{transform:translateX(0)}
  .nav-link{
    height:auto;padding:16px 14px;font-size:18px;border-radius:14px;opacity:0;
    transform:translateX(18px);animation:none;
  }
  .nav-menu.open .nav-link{animation:navIn .34s ease forwards}
  .nav-menu.open .nav-link:nth-child(1){animation-delay:.04s}
  .nav-menu.open .nav-link:nth-child(2){animation-delay:.1s}
  .nav-menu.open .nav-link:nth-child(3){animation-delay:.16s}
  .nav-link::after{display:none}
  .nav-toggle{display:grid}
  .hero{min-height:auto;padding:64px 0 56px}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .feat-group.g-a,.feat-group.g-b{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .post-grid{grid-template-columns:1fr}
  .price-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .cta-band{grid-template-columns:1fr;padding:44px 30px}
  .section{padding:72px 0}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .nav-wrap{height:60px}
  .nav-menu{inset:60px 0 0}
  .brand-text{font-size:17px}
  .nav-actions .btn{display:none}
  .hero h1{font-size:clamp(28px,7vw,38px)}
  .hero-sub{font-size:15.6px}
  .hero-badges{flex-wrap:nowrap;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch}
  .hero-badges .badge{flex-shrink:0}
  .card,.card-lg{padding:24px}
  .card-lg h3{font-size:21px}
  .scene-grid{grid-template-columns:1fr}
  .case-grid{grid-template-columns:1fr}
  .post-item img{width:84px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .section{padding:56px 0}
  .section-head{margin-bottom:34px}
  .faq-item summary{padding:17px 20px 17px 24px;font-size:16px}
  .faq-body{padding:0 20px 20px 24px}
  .cta-band{padding:34px 22px;border-radius:var(--r-md)}
}
@media (max-width:520px){
  html{-webkit-text-size-adjust:100%}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .post-item{flex-direction:column}
  .post-item img{width:100%;aspect-ratio:16/9}
  .price-amount b{font-size:32px}
  .cta-actions .btn{width:100%}
}
@keyframes navIn{to{opacity:1;transform:translateX(0)}}

/* roulang page: article */
:root{
  --bg-900:#0A0C12;
  --bg-800:#101423;
  --surface:#161A2B;
  --surface-2:#1D2236;
  --line:rgba(255,255,255,.08);
  --brand-a:#12E0A0;
  --brand-b:#7C4DFF;
  --accent:#FF4D9D;
  --warm:#FFB84D;
  --success:#34D399;
  --danger:#FF5C7A;
  --text:#F2F5FF;
  --text-2:#A8B0C8;
  --text-3:#6E768F;
  --grad-hero:linear-gradient(135deg,#12E0A0 0%,#7C4DFF 100%);
  --grad-cta:linear-gradient(90deg,#FF4D9D 0%,#7C4DFF 100%);
  --grad-line:linear-gradient(90deg,rgba(18,224,160,0) 0%,#12E0A0 35%,#7C4DFF 70%,rgba(124,77,255,0) 100%);
  --glow-a:0 0 24px rgba(18,224,160,.35);
  --glow-c:0 0 18px rgba(255,77,157,.45);
  --shadow:0 18px 48px rgba(0,0,0,.45);
  --r-lg:24px;
  --r-md:20px;
  --r-sm:14px;
  --nav-h:68px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding-top:var(--nav-h);
  background:var(--bg-900);
  color:var(--text);
  font-family:"HarmonyOS Sans","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5{margin:0;font-weight:800;line-height:1.25;letter-spacing:.2px;}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand-a);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(124,77,255,.45);color:#fff;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:var(--bg-800);}
::-webkit-scrollbar-thumb{background:#2A3049;border-radius:8px;}
::-webkit-scrollbar-thumb:hover{background:#3A4160;}

.container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px;}
.mono{font-family:"JetBrains Mono","SFMono-Regular",Consolas,monospace;font-variant-numeric:tabular-nums;}

/* ---------- Header / Nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  height:var(--nav-h);
  background:rgba(10,12,18,.92);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:var(--grad-line);opacity:.75;pointer-events:none;
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:var(--nav-h);}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:800;letter-spacing:.3px;flex:none;}
.brand-mark{
  width:34px;height:34px;border-radius:11px;flex:none;
  background:var(--grad-hero);color:#07131A;
  display:grid;place-items:center;font-size:17px;font-weight:800;
  box-shadow:0 8px 22px rgba(18,224,160,.28);
}
.brand-text{
  background:linear-gradient(100deg,#EAF6FF 0%,#12E0A0 42%,#7C4DFF 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  white-space:nowrap;
}
.nav-menu{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-block;padding:10px 14px;border-radius:11px;
  font-size:14.5px;font-weight:500;color:var(--text-2);
  transition:color .25s,background .25s,box-shadow .25s;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;border-radius:2px;
  background:var(--grad-line);transform:scaleX(0);transform-origin:left;
  transition:transform .3s ease;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{
  color:#fff;background:rgba(124,77,255,.14);
  text-shadow:0 0 14px rgba(18,224,160,.55);
  box-shadow:0 8px 20px rgba(124,77,255,.18);
}
.nav-link.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;cursor:pointer;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  transition:border-color .25s,background .25s;
}
.nav-toggle:hover{border-color:rgba(18,224,160,.5);}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform .3s,opacity .3s;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;border:1px solid transparent;cursor:pointer;
  padding:12px 24px;font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .25s,box-shadow .25s,filter .25s,border-color .25s,color .25s,background .25s;
}
.btn i{font-size:14px;}
.btn-primary{
  background:var(--grad-cta);color:#fff;
  box-shadow:0 10px 28px rgba(124,77,255,.34);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:var(--glow-c);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.16);color:var(--text);}
.btn-ghost:hover{border-color:var(--brand-a);box-shadow:var(--glow-a);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand-a);font-weight:600;font-size:14.5px;}
.btn-text i{transition:transform .25s;}
.btn-text:hover i{transform:translateX(4px);}

/* ---------- Badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:7px;height:30px;padding:0 13px;border-radius:999px;
  font-size:12.5px;font-weight:600;letter-spacing:.3px;
  border:1px solid rgba(18,224,160,.35);background:rgba(18,224,160,.08);color:var(--brand-a);
}
.badge-violet{border-color:rgba(124,77,255,.4);background:rgba(124,77,255,.1);color:#B69CFF;}
.badge-warm{border-color:rgba(255,184,77,.35);background:rgba(255,184,77,.1);color:var(--warm);}
.badge-num{font-variant-numeric:tabular-nums;font-family:"JetBrains Mono",Consolas,monospace;}

/* ---------- Article banner ---------- */
.article-banner{
  position:relative;padding:56px 0 40px;
  background-image:linear-gradient(120deg,rgba(10,12,18,.94) 0%,rgba(10,12,18,.74) 48%,rgba(10,12,18,.55) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.article-banner::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:64px 64px;
}
.article-banner .container{position:relative;z-index:1;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:20px;}
.breadcrumb a{color:var(--text-3);transition:color .2s;}
.breadcrumb a:hover{color:var(--brand-a);}
.breadcrumb .sep{color:#3B4260;}
.breadcrumb .current{color:var(--text-2);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-title{
  font-size:clamp(28px,3.6vw,46px);line-height:1.2;max-width:960px;
  background:linear-gradient(100deg,#FFFFFF 0%,#DCE6FF 60%,#A9B8FF 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:20px;font-size:13.5px;color:var(--text-3);}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#3B4260;}
.meta-row .meta-item{display:inline-flex;align-items:center;gap:6px;}
.meta-row i{color:var(--brand-a);font-size:12.5px;}

/* ---------- Article layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:52px;
  padding:52px 0 40px;align-items:start;
}
.cover-figure{
  margin:34px 0 0;border-radius:var(--r-md);overflow:hidden;
  border:1px solid var(--line);aspect-ratio:16/9;background:var(--surface);
  box-shadow:var(--shadow);
}
.cover-figure img{width:100%;height:100%;object-fit:cover;}

.prose{max-width:820px;color:#D8DEEE;}
.prose h2{font-size:26px;margin:44px 0 14px;padding-left:14px;position:relative;color:var(--text);}
.prose h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:var(--grad-hero);}
.prose h3{font-size:20px;margin:32px 0 12px;color:#E8EDFF;}
.prose h4{font-size:17px;margin:24px 0 10px;color:var(--text-2);}
.prose p{font-size:16.5px;line-height:1.85;margin:0 0 18px;color:#CFD6E8;}
.prose a{color:var(--brand-a);border-bottom:1px solid rgba(18,224,160,.4);transition:border-color .2s,color .2s;}
.prose a:hover{color:#7CFFD4;border-color:#7CFFD4;}
.prose strong{color:#fff;}
.prose ul,.prose ol{margin:0 0 20px;padding-left:22px;}
.prose ul li,.prose ol li{font-size:16px;line-height:1.85;color:#CFD6E8;margin-bottom:10px;position:relative;}
.prose ul li::marker{color:var(--brand-a);}
.prose ol{list-style:decimal;}
.prose ol li::marker{color:var(--brand-b);font-weight:700;}
.prose blockquote{
  margin:26px 0;padding:16px 20px 16px 22px;border-radius:0 var(--r-sm) var(--r-sm) 0;
  border-left:3px solid var(--brand-a);
  background:linear-gradient(90deg,rgba(18,224,160,.1),rgba(124,77,255,.06));
  color:var(--text-2);font-size:15.5px;line-height:1.8;
}
.prose img{border-radius:18px;margin:26px 0;border:1px solid var(--line);}
.prose figure{margin:26px 0;}
.prose figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.prose hr{border:none;height:1px;background:var(--grad-line);margin:36px 0;opacity:.6;}
.prose table{width:100%;border-collapse:collapse;margin:24px 0;display:block;overflow-x:auto;white-space:nowrap;}
.prose th,.prose td{border:1px solid var(--line);padding:12px 16px;font-size:14.5px;text-align:left;}
.prose th{background:var(--surface-2);color:var(--text);font-weight:700;}
.prose td{color:var(--text-2);}
.prose code{
  font-family:"JetBrains Mono",Consolas,monospace;font-size:14px;
  background:rgba(124,77,255,.14);border:1px solid rgba(124,77,255,.24);
  padding:2px 7px;border-radius:7px;color:#C6B4FF;
}
.prose pre{
  background:#0D1120;border:1px solid var(--line);border-radius:var(--r-sm);
  padding:18px 20px;overflow-x:auto;margin:24px 0;
}
.prose pre code{background:none;border:none;padding:0;color:#B9E7D6;font-size:14px;line-height:1.75;}

/* ---------- Inline CTA ---------- */
.cta-inline{
  margin:40px 0 8px;padding:28px 28px 30px;border-radius:var(--r-md);
  border:1px solid transparent;
  background:
    linear-gradient(160deg,rgba(18,224,160,.08),rgba(124,77,255,.1)) padding-box,
    var(--grad-hero) border-box;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
}
.cta-inline h3{font-size:20px;margin-bottom:8px;}
.cta-inline p{color:var(--text-2);font-size:14.5px;max-width:460px;}

/* ---------- Sidebar ---------- */
.side-col{display:flex;flex-direction:column;gap:20px;position:sticky;top:92px;}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 22px 18px;box-shadow:0 14px 36px rgba(0,0,0,.35);
}
.side-card h3{font-size:15.5px;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3 i{color:var(--brand-a);font-size:14px;}
.side-list li + li{border-top:1px dashed var(--line);}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 0;font-size:14.5px;color:var(--text-2);transition:color .2s,padding .25s;
}
.side-list a i{font-size:12px;color:var(--text-3);transition:transform .25s,color .25s;}
.side-list a:hover{color:var(--brand-a);}
.side-list a:hover i{transform:translateX(4px);color:var(--brand-a);}
.side-cta{
  background:linear-gradient(150deg,rgba(18,224,160,.14),rgba(124,77,255,.16));
  border-color:rgba(124,77,255,.3);
}
.side-cta p{color:var(--text-2);font-size:14px;line-height:1.75;margin-bottom:16px;}
.side-cta .btn{width:100%;}

/* ---------- Related ---------- */
.related{padding:24px 0 96px;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:30px;}
.section-head h2{font-size:clamp(22px,2.4vw,30px);}
.section-head p{color:var(--text-3);font-size:14px;margin-top:8px;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  transition:transform .3s,border-color .3s,box-shadow .3s;
}
.card:hover{
  transform:translateY(-4px);
  border-color:rgba(18,224,160,.45);
  box-shadow:var(--shadow),0 0 24px rgba(18,224,160,.14);
}
.card-cover{width:100%;aspect-ratio:16/9;object-fit:cover;}
.card-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:17px;line-height:1.5;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;}
.card-body p{font-size:14px;color:var(--text-2);line-height:1.7;overflow:hidden;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;}
.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;font-size:13px;color:var(--text-3);}
.card-foot i{color:var(--brand-a);transition:transform .25s;}
.card:hover .card-foot i{transform:translateX(4px);}

/* ---------- Empty state ---------- */
.empty-state{
  border:1px dashed rgba(255,255,255,.16);border-radius:var(--r-md);
  background:rgba(255,255,255,.02);
  padding:56px 24px;text-align:center;max-width:820px;
}
.empty-state .ico{
  width:56px;height:56px;border-radius:18px;margin:0 auto 18px;
  display:grid;place-items:center;font-size:22px;color:var(--brand-a);
  background:rgba(18,224,160,.1);border:1px solid rgba(18,224,160,.3);
}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:22px;}

/* ---------- Back bar ---------- */
.back-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding:26px 0 0;border-top:1px solid var(--line);margin-top:44px;}
.back-bar span{color:var(--text-3);font-size:13.5px;}

/* ---------- Footer ---------- */
.site-footer{
  background:linear-gradient(180deg,#0C1019 0%,#090B11 100%);
  border-top:1px solid var(--line);padding:64px 0 0;position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:var(--grad-line);opacity:.7;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{color:var(--text-3);font-size:14px;line-height:1.8;max-width:320px;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text);}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul a{font-size:14px;color:var(--text-2);position:relative;transition:color .25s;}
.footer-col ul a::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:1px;
  background:var(--grad-hero);transform:scaleX(0);transform-origin:left;transition:transform .3s;
}
.footer-col ul a:hover{color:var(--text);}
.footer-col ul a:hover::after{transform:scaleX(1);}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--text-2);margin-bottom:11px;}
.footer-contact b{color:var(--text-3);font-weight:500;min-width:38px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:20px 0 26px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ---------- Responsive ---------- */
@media (max-width:1280px){
  .article-layout{gap:40px;}
}
@media (max-width:1024px){
  .nav-menu{
    position:fixed;top:var(--nav-h);left:0;right:0;bottom:0;
    flex-direction:column;align-items:stretch;gap:6px;
    padding:28px 24px 40px;
    background:rgba(9,11,17,.98);
    border-top:1px solid var(--line);
    transform:translateX(100%);opacity:0;pointer-events:none;
    transition:transform .35s ease,opacity .3s ease;
    overflow-y:auto;
  }
  .nav-menu.open{transform:translateX(0);opacity:1;pointer-events:auto;}
  .nav-link{display:block;width:100%;font-size:18px;padding:16px 18px;border-radius:14px;}
  .nav-link::after{left:18px;right:18px;bottom:9px;}
  .nav-toggle{display:flex;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px;}
  .side-col{position:static;flex-direction:row;flex-wrap:wrap;}
  .side-card{flex:1 1 300px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  body{padding-top:60px;}
  :root{--nav-h:60px;}
  .container{padding:0 16px;}
  .article-banner{padding:36px 0 28px;}
  .article-layout{padding:34px 0 28px;}
  .cover-figure{margin-top:26px;}
  .prose p{font-size:16px;}
  .prose h2{font-size:22px;}
  .prose h3{font-size:18px;}
  .related-grid{grid-template-columns:1fr;}
  .related{padding:16px 0 64px;}
  .cta-inline{padding:22px;flex-direction:column;align-items:flex-start;}
  .cta-inline .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .brand-text{font-size:17px;}
}
@media (max-width:520px){
  .article-title{font-size:26px;}
  .breadcrumb .current{max-width:220px;}
  .meta-row{font-size:13px;}
  .nav-actions .btn{display:none;}
  .side-col{flex-direction:column;}
}

/* roulang page: category1 */
:root{
  --bg-900:#0A0C12;
  --bg-800:#101423;
  --surface:#161A2B;
  --surface-2:#1D2236;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.16);
  --brand-a:#12E0A0;
  --brand-b:#7C4DFF;
  --accent:#FF4D9D;
  --warm:#FFB84D;
  --success:#34D399;
  --danger:#FF5C7A;
  --text:#F2F5FF;
  --text-2:#A8B0C8;
  --text-3:#6E768F;
  --grad-hero:linear-gradient(135deg,#12E0A0 0%,#7C4DFF 100%);
  --grad-cta:linear-gradient(90deg,#FF4D9D 0%,#7C4DFF 100%);
  --grad-line:linear-gradient(90deg,rgba(18,224,160,0) 0%,#12E0A0 35%,#7C4DFF 65%,rgba(124,77,255,0) 100%);
  --glow-a:0 0 24px rgba(18,224,160,.35);
  --glow-c:0 0 18px rgba(255,77,157,.45);
  --shadow:0 18px 48px rgba(0,0,0,.45);
  --r-lg:24px;
  --r-md:20px;
  --r-sm:14px;
  --container:1280px;
  --font:"HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .22s ease,border-color .22s ease,opacity .22s ease}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--brand-a);outline-offset:2px;border-radius:6px}
::selection{background:rgba(124,77,255,.4);color:#fff}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.grad-text{
  background:var(--grad-hero);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:999px;
  font-size:15px;
  font-weight:700;
  white-space:nowrap;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,filter .22s ease;
}
.btn-primary{
  background:var(--grad-cta);
  color:#fff;
  box-shadow:0 10px 30px rgba(124,77,255,.3);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:var(--glow-c)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-ghost{
  background:transparent;
  border:1px solid var(--line-2);
  color:var(--text);
}
.btn-ghost:hover{border-color:var(--brand-a);box-shadow:var(--glow-a);transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:700;
  color:var(--brand-a);
}
.link-arrow span{transition:transform .22s ease}
.link-arrow:hover span{transform:translateX(4px)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(10,12,18,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.site-header::after{
  content:"";
  display:block;
  height:1px;
  background:var(--grad-line);
  opacity:.75;
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:68px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;
  display:grid;place-items:center;
  border-radius:11px;
  background:var(--grad-hero);
  color:#08111A;
  font-weight:800;
  font-size:17px;
  box-shadow:var(--glow-a);
}
.brand-text{
  font-size:19px;
  font-weight:800;
  letter-spacing:.01em;
  background:var(--grad-hero);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  white-space:nowrap;
}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;
  padding:10px 14px;
  font-size:15px;
  font-weight:600;
  color:var(--text-2);
  border-radius:10px;
  transition:color .22s ease,background .22s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:4px;
  height:2px;
  border-radius:2px;
  background:var(--grad-cta);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .25s ease;
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{
  color:#fff;
  background:rgba(124,77,255,.12);
  box-shadow:0 6px 18px rgba(124,77,255,.22);
}
.nav-link.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--surface);
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
}
.nav-toggle span{
  display:block;
  width:17px;height:2px;
  border-radius:2px;
  background:var(--text);
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 页面 Hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:96px 0 72px;
  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 right;
  opacity:.32;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(760px 420px at 12% 20%,rgba(124,77,255,.28),transparent 62%),
    linear-gradient(180deg,rgba(10,12,18,.72) 0%,rgba(10,12,18,.94) 78%,var(--bg-900) 100%);
}
.page-hero .container{position:relative;z-index:2}
.crumbs{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13.5px;
  color:var(--text-3);
  margin-bottom:22px;
}
.crumbs a:hover{color:var(--brand-a)}
.crumbs .sep{color:var(--text-3);opacity:.7}
.crumbs .current{color:var(--text-2)}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:30px;
  padding:0 14px;
  margin-bottom:20px;
  border-radius:999px;
  border:1px solid rgba(18,224,160,.45);
  background:rgba(18,224,160,.08);
  color:var(--brand-a);
  font-size:13px;
  font-weight:700;
}
.hero-tag i{
  width:7px;height:7px;border-radius:50%;
  background:var(--brand-a);
  box-shadow:var(--glow-a);
  display:block;
  animation:pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.32}}
.page-hero h1{
  font-size:clamp(30px,4.2vw,52px);
  line-height:1.15;
  max-width:16em;
  margin-bottom:20px;
}
.hero-sub{
  max-width:720px;
  font-size:17px;
  line-height:1.9;
  color:var(--text-2);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:16px;
  margin-top:52px;
}
.stat{
  padding:20px 22px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(29,34,54,.85),rgba(22,26,43,.7));
  box-shadow:var(--shadow);
}
.stat b{
  display:block;
  font-size:clamp(24px,2.4vw,32px);
  font-weight:800;
  background:var(--grad-hero);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  font-variant-numeric:tabular-nums;
}
.stat span{display:block;margin-top:6px;font-size:13.5px;color:var(--text-3)}

/* ---------- 主布局 ---------- */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{
  font-size:clamp(24px,2.8vw,36px);
  line-height:1.25;
  margin-bottom:14px;
}
.section-head p{color:var(--text-2);font-size:16.5px}
.eyebrow{
  display:inline-block;
  margin-bottom:14px;
  font-size:13px;
  font-weight:800;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--brand-b);
}
.divider{
  height:1px;
  background:var(--grad-line);
  opacity:.45;
  border:0;
  margin:0;
}

.cat-layout{
  display:grid;
  grid-template-columns:236px minmax(0,1fr);
  gap:44px;
  align-items:start;
}
.anchor-nav{
  position:sticky;
  top:96px;
  padding:22px 20px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:linear-gradient(170deg,var(--surface),rgba(16,20,35,.85));
  box-shadow:var(--shadow);
}
.anchor-nav h3{
  font-size:13px;
  letter-spacing:.12em;
  color:var(--text-3);
  font-weight:800;
  margin-bottom:14px;
}
.anchor-nav a{
  display:block;
  padding:9px 12px;
  border-radius:10px;
  font-size:14px;
  color:var(--text-2);
  border-left:2px solid transparent;
}
.anchor-nav a:hover{
  color:#fff;
  background:rgba(124,77,255,.12);
  border-left-color:var(--accent);
}
.anchor-nav .anchor-cta{
  display:block;
  margin-top:18px;
  padding-top:18px;
  border-top:1px solid var(--line);
}

.feature-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.feature-card{
  display:flex;
  flex-direction:column;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(175deg,var(--surface) 0%,rgba(16,20,35,.92) 100%);
  box-shadow:var(--shadow);
  overflow:hidden;
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
  scroll-margin-top:96px;
}
.feature-card:hover{
  transform:translateY(-4px);
  border-color:rgba(18,224,160,.42);
  box-shadow:0 22px 54px rgba(0,0,0,.5),var(--glow-a);
}
.feature-media{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
}
.feature-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .6s ease;
}
.feature-card:hover .feature-media img{transform:scale(1.05)}
.feature-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,12,18,.1) 0%,rgba(10,12,18,.86) 100%);
}
.feature-no{
  position:absolute;
  left:18px;bottom:16px;
  z-index:2;
  font-size:13px;
  font-weight:800;
  letter-spacing:.1em;
  color:var(--brand-a);
  font-variant-numeric:tabular-nums;
}
.feature-body{padding:26px 26px 30px}
.feature-body h3{font-size:20px;margin-bottom:12px}
.feature-body p{color:var(--text-2);font-size:15.5px}
.point-list{margin-top:20px;display:grid;gap:10px}
.point-list li{
  position:relative;
  padding-left:20px;
  font-size:14.5px;
  color:var(--text-2);
}
.point-list li::before{
  content:"";
  position:absolute;
  left:0;top:.62em;
  width:9px;height:2px;
  border-radius:2px;
  background:var(--grad-cta);
}

/* ---------- 徽章 ---------- */
.badges{display:flex;flex-wrap:wrap;gap:10px}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:30px;
  padding:0 13px;
  border-radius:999px;
  border:1px solid rgba(124,77,255,.42);
  background:rgba(124,77,255,.1);
  font-size:13px;
  font-weight:700;
  color:#CFC4FF;
  white-space:nowrap;
}
.badge-green{border-color:rgba(18,224,160,.45);background:rgba(18,224,160,.1);color:#8CF2D2}
.badge-warm{border-color:rgba(255,184,77,.45);background:rgba(255,184,77,.1);color:#FFD79B}

/* ---------- 对照表 ---------- */
.table-block{
  margin-top:96px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(180deg,var(--surface),rgba(16,20,35,.9));
  box-shadow:var(--shadow);
  overflow:hidden;
}
.table-block-head{
  padding:30px 30px 22px;
  border-bottom:1px solid var(--line);
}
.table-block-head h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:10px}
.table-block-head p{color:var(--text-2);font-size:15.5px;max-width:720px}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.table-scroll table{min-width:760px}
.table-scroll th,
.table-scroll td{
  padding:16px 22px;
  text-align:left;
  font-size:14.5px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.table-scroll thead th{
  font-size:13px;
  letter-spacing:.08em;
  color:var(--text-3);
  font-weight:800;
  background:rgba(10,12,18,.5);
}
.table-scroll tbody th{
  font-weight:700;
  color:var(--text);
  background:rgba(10,12,18,.28);
}
.table-scroll td{color:var(--text-2)}
.table-scroll tbody tr:hover td,
.table-scroll tbody tr:hover th{background:rgba(124,77,255,.08)}
.table-scroll tbody tr:last-child th,
.table-scroll tbody tr:last-child td{border-bottom:0}
.col-hi{color:var(--success) !important;font-weight:700}
.table-note{
  padding:18px 30px 24px;
  font-size:13.5px;
  color:var(--text-3);
  border-top:1px solid var(--line);
}

/* ---------- 场景 ---------- */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
}
.scene-card{
  padding:28px 24px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--surface);
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.scene-card:hover{
  transform:translateY(-4px);
  border-color:rgba(255,77,157,.38);
  box-shadow:0 20px 44px rgba(0,0,0,.46);
}
.scene-icon{
  width:44px;height:44px;
  display:grid;place-items:center;
  border-radius:13px;
  background:rgba(18,224,160,.1);
  border:1px solid rgba(18,224,160,.32);
  color:var(--brand-a);
  font-size:18px;
  font-weight:800;
  margin-bottom:18px;
}
.scene-card h3{font-size:17px;margin-bottom:10px}
.scene-card p{font-size:14.5px;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:940px}
.faq-item{
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:var(--surface);
  overflow:hidden;
  transition:border-color .24s ease,background .24s ease;
}
.faq-item.open{
  border-color:rgba(18,224,160,.4);
  background:var(--surface-2);
  box-shadow:inset 3px 0 0 var(--brand-a);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 22px;
  text-align:left;
  font-size:16.5px;
  font-weight:700;
  line-height:1.55;
}
.faq-q i{
  flex-shrink:0;
  width:26px;height:26px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid var(--line-2);
  color:var(--brand-a);
  font-style:normal;
  font-size:15px;
  transition:transform .26s ease,border-color .26s ease;
}
.faq-item.open .faq-q i{transform:rotate(45deg);border-color:var(--brand-a)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .34s ease;
}
.faq-a p{
  padding:0 22px 22px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid rgba(124,77,255,.36);
  background:linear-gradient(130deg,rgba(18,224,160,.12) 0%,rgba(124,77,255,.2) 55%,rgba(255,77,157,.16) 100%),var(--bg-800);
  padding:56px 48px;
  display:grid;
  grid-template-columns:1.5fr .9fr;
  gap:36px;
  align-items:center;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-3.png");
  background-size:cover;
  background-position:center;
  opacity:.14;
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{font-size:clamp(24px,2.8vw,34px);margin-bottom:14px}
.cta-band p{color:var(--text-2);font-size:16px;max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  background:var(--bg-800);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  display:block;
  height:1px;
  background:var(--grad-line);
  opacity:.6;
}
.footer-grid{
  display:grid;
  grid-template-columns:2.1fr 1fr 1fr 1.3fr;
  gap:40px;
  padding:72px 0 52px;
}
.footer-brand p{
  margin-top:18px;
  max-width:340px;
  font-size:14.5px;
  color:var(--text-3);
  line-height:1.85;
}
.footer-col h4{
  font-size:14px;
  letter-spacing:.08em;
  color:var(--text);
  margin-bottom:18px;
}
.footer-col ul{display:grid;gap:11px}
.footer-col a{
  font-size:14.5px;
  color:var(--text-2);
  position:relative;
}
.footer-col a::after{
  content:"";
  position:absolute;
  left:0;bottom:-3px;
  width:100%;height:1px;
  background:var(--grad-cta);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .26s ease;
}
.footer-col a:hover{color:#fff}
.footer-col a:hover::after{transform:scaleX(1)}
.footer-contact li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2)}
.footer-contact b{
  flex-shrink:0;
  color:var(--text-3);
  font-weight:600;
  min-width:44px;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  align-items:center;
  padding:22px 0 30px;
  border-top:1px solid var(--line);
  font-size:13.5px;
  color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container{padding:0 22px}
}
@media (max-width:1024px){
  .nav-menu{
    position:fixed;
    inset:68px 0 0 0;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:24px 22px;
    background:rgba(10,12,18,.98);
    backdrop-filter:blur(16px);
    transform:translateY(-12px);
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transition:opacity .26s ease,transform .26s ease,visibility .26s;
    overflow-y:auto;
  }
  .nav-menu.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}
  .nav-link{
    font-size:18px;
    padding:14px 16px;
    border-radius:12px;
    opacity:0;
    transform:translateX(-14px);
    animation:none;
  }
  .nav-menu.is-open .nav-link{animation:slideIn .34s ease forwards}
  .nav-menu.is-open .nav-link:nth-child(1){animation-delay:.04s}
  .nav-menu.is-open .nav-link:nth-child(2){animation-delay:.1s}
  .nav-menu.is-open .nav-link:nth-child(3){animation-delay:.16s}
  @keyframes slideIn{to{opacity:1;transform:translateX(0)}}
  .nav-link::after{display:none}
  .nav-toggle{display:flex}
  .cat-layout{grid-template-columns:1fr}
  .anchor-nav{display:none}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{grid-template-columns:1fr;padding:44px 32px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:860px){
  .feature-grid{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:768px){
  body{font-size:15.5px}
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .page-hero{padding:64px 0 48px}
  .page-hero h1{font-size:clamp(26px,7.4vw,34px)}
  .hero-sub{font-size:15.5px}
  .hero-stats{margin-top:36px;gap:12px}
  .stat{padding:16px}
  .table-block{margin-top:56px}
  .table-block-head{padding:24px 20px 18px}
  .table-note{padding:16px 20px 20px}
  .faq-q{padding:17px 18px;font-size:15.5px}
  .faq-a p{padding:0 18px 18px;font-size:14.5px}
  .cta-band{padding:36px 22px;margin:0}
  .footer-grid{padding:52px 0 40px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .brand-text{font-size:16.5px}
  .brand-mark{width:30px;height:30px;font-size:15px}
  .hero-actions .btn{width:100%}
  .feature-body{padding:22px 20px 26px}
  .scene-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category2 */
:root{
  --bg-900:#0A0C12;
  --bg-800:#101423;
  --surface:#161A2B;
  --surface-2:#1D2236;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --brand-a:#12E0A0;
  --brand-b:#7C4DFF;
  --accent:#FF4D9D;
  --warm:#FFB84D;
  --success:#34D399;
  --danger:#FF5C7A;
  --text:#F2F5FF;
  --text-2:#A8B0C8;
  --text-3:#6E768F;
  --grad-hero:linear-gradient(135deg,#12E0A0 0%,#7C4DFF 100%);
  --grad-cta:linear-gradient(90deg,#FF4D9D 0%,#7C4DFF 100%);
  --grad-line:linear-gradient(90deg,rgba(255,255,255,0),#12E0A0 35%,#7C4DFF 70%,rgba(255,255,255,0));
  --glow-a:0 0 24px rgba(18,224,160,.35);
  --glow-c:0 0 18px rgba(255,77,157,.45);
  --shadow-card:0 18px 48px rgba(0,0,0,.45);
  --radius-lg:24px;
  --radius-md:20px;
  --radius-sm:14px;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:92px;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text);
  font-family:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .25s ease,opacity .25s ease;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:-.01em;}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand-a);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(124,77,255,.45);color:#fff;}

.container{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 24px;
}

/* ============ 顶栏导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(10,12,18,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:var(--grad-line);
  opacity:.65;
}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:28px;
  height:68px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand-mark{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:12px;
  background:var(--grad-hero);
  color:#08111A;
  font-weight:800;
  font-size:17px;
  box-shadow:var(--glow-a);
}
.brand-text{
  font-size:19px;
  font-weight:800;
  letter-spacing:.01em;
  background:linear-gradient(90deg,#F2F5FF 0%,#12E0A0 55%,#7C4DFF 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  z-index:0;
  padding:10px 16px;
  border-radius:12px;
  font-size:15px;
  color:var(--text-2);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:16px;right:16px;bottom:4px;
  height:2px;
  border-radius:2px;
  background:var(--grad-hero);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .3s ease;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{
  background:linear-gradient(90deg,#12E0A0,#7C4DFF);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  font-weight:700;
}
.nav-link.active::before{
  content:"";
  position:absolute;
  inset:0;
  border-radius:12px;
  background:rgba(124,77,255,.12);
  box-shadow:0 0 20px rgba(124,77,255,.25) inset;
  z-index:-1;
}
.nav-link.active::after{transform:scaleX(1);opacity:.9;}
.nav-actions{
  display:flex;
  align-items:center;
  gap:14px;
  flex:0 0 auto;
}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid var(--line-strong);
  position:relative;
}
.nav-toggle span{
  position:absolute;
  left:11px;right:11px;
  height:2px;
  border-radius:2px;
  background:var(--text);
  transition:transform .3s ease,opacity .3s ease,top .3s ease;
}
.nav-toggle span:nth-child(1){top:14px;}
.nav-toggle span:nth-child(2){top:20px;}
.nav-toggle span:nth-child(3){top:26px;}
.nav-toggle.open span:nth-child(1){top:20px;transform:rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){top:20px;transform:rotate(-45deg);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:0 26px;
  height:50px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  border:1px solid transparent;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease,color .25s ease;
  white-space:nowrap;
}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-primary{
  background:var(--grad-cta);
  color:#fff;
  box-shadow:0 10px 30px rgba(255,77,157,.28);
}
.btn-primary:hover{
  transform:translateY(-2px);
  filter:brightness(1.08);
  box-shadow:0 14px 34px rgba(255,77,157,.42),var(--glow-c);
}
.btn-primary:active{transform:translateY(0) scale(.99);}
.btn-ghost{
  background:rgba(255,255,255,.02);
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{
  border-color:rgba(18,224,160,.6);
  box-shadow:0 0 22px rgba(18,224,160,.22);
  transform:translateY(-2px);
}
.btn .arrow{transition:transform .25s ease;}
.btn:hover .arrow{transform:translateX(4px);}

/* ============ Hero ============ */
.hero{
  position:relative;
  overflow:hidden;
  padding:104px 0 72px;
  min-height:66vh;
  display:flex;
  align-items:center;
}
.hero-bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  opacity:.38;
  z-index:0;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(100deg,rgba(10,12,18,.97) 0%,rgba(10,12,18,.86) 45%,rgba(16,20,35,.55) 100%);
  z-index:1;
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:56px 56px;
  z-index:1;
  pointer-events:none;
}
.hero .container{position:relative;z-index:2;}
.hero-inner{max-width:840px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  border:1px solid rgba(18,224,160,.35);
  background:rgba(18,224,160,.08);
  color:var(--brand-a);
  font-size:13px;
  font-weight:600;
  letter-spacing:.04em;
  margin-bottom:22px;
}
.eyebrow::before{
  content:"";
  width:7px;height:7px;
  border-radius:50%;
  background:var(--brand-a);
  box-shadow:var(--glow-a);
}
.hero h1{
  font-size:clamp(28px,4.2vw,54px);
  line-height:1.16;
  font-weight:800;
  letter-spacing:-.02em;
  margin-bottom:20px;
}
.hero h1 .grad{
  background:var(--grad-hero);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  font-size:18px;
  color:var(--text-2);
  line-height:1.85;
  max-width:660px;
  margin-bottom:32px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:38px;
}
.hero-badges{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:32px;
  padding:0 15px;
  border-radius:999px;
  border:1px solid rgba(18,224,160,.32);
  background:rgba(18,224,160,.07);
  font-size:13px;
  color:var(--text-2);
  white-space:nowrap;
}
.badge b{
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  font-weight:700;
  color:var(--brand-a);
  font-size:14px;
}
.badge.violet{
  border-color:rgba(124,77,255,.38);
  background:rgba(124,77,255,.09);
}
.badge.violet b{color:#B49BFF;}
.badge.warm{
  border-color:rgba(255,184,77,.34);
  background:rgba(255,184,77,.08);
}
.badge.warm b{color:var(--warm);}

/* ============ 通用板块 ============ */
.section{
  padding:96px 0;
  position:relative;
}
.section.tight{padding-top:56px;}
.section-head{
  max-width:760px;
  margin-bottom:48px;
}
.section-head h2{
  font-size:clamp(24px,3vw,38px);
  margin-bottom:16px;
  letter-spacing:-.02em;
}
.section-head p{
  color:var(--text-2);
  font-size:16.5px;
}
.section-tag{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--brand-b);
  margin-bottom:12px;
}
.divider{
  height:1px;
  background:var(--grad-line);
  opacity:.4;
  margin:0;
}

/* ============ 网格 ============ */
.grid-12{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:24px;
}
.col-7{grid-column:span 7;}
.col-5{grid-column:span 5;}
.col-6{grid-column:span 6;}
.col-4{grid-column:span 4;}
.col-8{grid-column:span 8;}
.col-12{grid-column:span 12;}

/* ============ 准备清单 ============ */
.prep-copy{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:34px;
  box-shadow:var(--shadow-card);
}
.prep-list{margin-top:8px;}
.prep-list li{
  display:flex;
  gap:16px;
  padding:18px 0;
  border-bottom:1px dashed var(--line);
}
.prep-list li:last-child{border-bottom:0;padding-bottom:0;}
.prep-list .num{
  flex:0 0 auto;
  width:32px;height:32px;
  border-radius:10px;
  display:grid;place-items:center;
  font-family:var(--mono);
  font-size:13px;
  font-weight:700;
  color:var(--brand-a);
  background:rgba(18,224,160,.1);
  border:1px solid rgba(18,224,160,.3);
}
.prep-list h3{
  font-size:16.5px;
  margin-bottom:6px;
}
.prep-list p{
  font-size:15px;
  color:var(--text-2);
  line-height:1.8;
}
.prep-visual{
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  position:relative;
  height:100%;
}
.prep-visual img{
  width:100%;
  height:100%;
  aspect-ratio:4/5;
  object-fit:cover;
}
.prep-visual::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(10,12,18,0) 35%,rgba(10,12,18,.82) 100%);
}
.prep-visual figcaption{
  position:absolute;
  left:24px;right:24px;bottom:22px;
  z-index:2;
  font-size:14.5px;
  color:var(--text-2);
}
.prep-visual figcaption strong{
  display:block;
  color:var(--text);
  font-size:17px;
  margin-bottom:6px;
}

/* ============ 步骤流 ============ */
.step-list{
  display:flex;
  flex-direction:column;
  gap:20px;
}
.step-card{
  position:relative;
  padding:28px;
  border-radius:var(--radius-lg);
  background:var(--surface);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.step-card:hover{
  transform:translateY(-4px);
  border-color:rgba(18,224,160,.36);
  box-shadow:var(--shadow-card),0 0 24px rgba(18,224,160,.18);
}
.step-head{
  display:flex;
  align-items:center;
  gap:16px;
  margin-bottom:14px;
}
.step-index{
  flex:0 0 auto;
  width:46px;height:46px;
  border-radius:14px;
  display:grid;place-items:center;
  background:var(--grad-hero);
  color:#08111A;
  font-family:var(--mono);
  font-weight:800;
  font-size:16px;
  font-variant-numeric:tabular-nums;
}
.step-head h3{
  font-size:19px;
}
.step-card > p{
  color:var(--text-2);
  font-size:15.5px;
  line-height:1.85;
  margin-bottom:16px;
}
.step-points{
  display:flex;
  flex-wrap:wrap;
  gap:10px 18px;
}
.step-points li{
  position:relative;
  padding-left:20px;
  font-size:14.5px;
  color:var(--text-2);
}
.step-points li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:8px;height:8px;
  border-radius:50%;
  background:linear-gradient(135deg,#12E0A0,#7C4DFF);
}

/* ============ 粘性侧栏面板 ============ */
.side-panel{
  position:sticky;
  top:92px;
  padding:30px;
  border-radius:var(--radius-lg);
  background:linear-gradient(180deg,#1A1F33 0%,#131728 100%);
  border:1px solid rgba(124,77,255,.3);
  box-shadow:var(--shadow-card);
}
.side-panel h3{
  font-size:19px;
  margin-bottom:6px;
}
.side-panel .panel-note{
  font-size:14px;
  color:var(--text-3);
  margin-bottom:20px;
}
.metric{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
  padding:15px 0;
  border-bottom:1px dashed var(--line);
}
.metric:last-of-type{border-bottom:0;}
.metric span{
  font-size:14.5px;
  color:var(--text-2);
}
.metric b{
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  font-size:18px;
  font-weight:700;
  background:linear-gradient(90deg,#12E0A0,#7C4DFF);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.panel-tip{
  margin-top:22px;
  padding:16px 18px;
  border-radius:var(--radius-sm);
  background:rgba(255,184,77,.08);
  border:1px solid rgba(255,184,77,.28);
  font-size:14px;
  color:var(--text-2);
  line-height:1.75;
}
.panel-tip strong{
  color:var(--warm);
}
.side-panel .btn{
  width:100%;
  margin-top:22px;
}

/* ============ 表格 ============ */
.table-wrap{
  overflow-x:auto;
  border-radius:var(--radius-md);
  border:1px solid var(--line);
  background:var(--surface);
  box-shadow:var(--shadow-card);
  -webkit-overflow-scrolling:touch;
}
table{
  width:100%;
  min-width:720px;
  border-collapse:collapse;
  font-size:15px;
}
thead th{
  text-align:left;
  padding:18px 22px;
  font-size:13.5px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--brand-a);
  background:rgba(18,224,160,.05);
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
tbody td{
  padding:20px 22px;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
  vertical-align:top;
}
tbody tr:last-child td{border-bottom:0;}
tbody tr:hover td{background:rgba(124,77,255,.06);color:var(--text);}
tbody td:first-child{
  color:var(--text);
  font-weight:600;
}
tbody td .mono{
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  color:var(--brand-a);
}

/* ============ 场景清单 ============ */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.scene-card{
  padding:26px;
  border-radius:var(--radius-md);
  background:var(--surface);
  border:1px solid var(--line);
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.scene-card:hover{
  transform:translateY(-4px);
  border-color:rgba(124,77,255,.45);
  box-shadow:var(--shadow-card),0 0 22px rgba(124,77,255,.2);
}
.scene-icon{
  width:42px;height:42px;
  border-radius:13px;
  display:grid;place-items:center;
  background:rgba(124,77,255,.14);
  border:1px solid rgba(124,77,255,.34);
  color:#B49BFF;
  margin-bottom:16px;
}
.scene-card h3{
  font-size:17px;
  margin-bottom:8px;
}
.scene-card p{
  font-size:14.8px;
  color:var(--text-2);
  line-height:1.8;
}

/* ============ FAQ ============ */
.faq-list{
  display:flex;
  flex-direction:column;
  gap:12px;
}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  background:var(--surface);
  overflow:hidden;
  transition:border-color .3s ease,background .3s ease;
}
.faq-item.open{
  border-color:rgba(18,224,160,.36);
  background:var(--surface-2);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 24px;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  transition:box-shadow .3s ease;
}
.faq-item.open .faq-q{
  box-shadow:inset 3px 0 0 #12E0A0;
}
.faq-icon{
  flex:0 0 auto;
  width:26px;height:26px;
  border-radius:50%;
  display:grid;place-items:center;
  border:1px solid var(--line-strong);
  color:var(--text-2);
  font-size:16px;
  line-height:1;
  transition:transform .3s ease,color .3s ease,border-color .3s ease;
}
.faq-item.open .faq-icon{
  transform:rotate(45deg);
  color:var(--brand-a);
  border-color:rgba(18,224,160,.5);
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s ease;
}
.faq-a p{
  padding:0 24px 22px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.85;
}

/* ============ CTA ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:28px;
  padding:56px;
  border:1px solid rgba(124,77,255,.35);
  background:linear-gradient(135deg,rgba(255,77,157,.16) 0%,rgba(124,77,255,.2) 55%,rgba(18,224,160,.12) 100%),var(--bg-800);
  box-shadow:var(--shadow-card);
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  opacity:.16;
}
.cta-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.4fr .8fr;
  gap:32px;
  align-items:center;
}
.cta-band h2{
  font-size:clamp(22px,2.6vw,32px);
  margin-bottom:14px;
}
.cta-band p{
  color:var(--text-2);
  font-size:16px;
  max-width:560px;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  justify-content:flex-end;
}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:96px;
  background:var(--bg-800);
  border-top:1px solid var(--line);
  padding:72px 0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid var(--line);
}
.footer-brand p{
  margin-top:18px;
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.85;
  max-width:340px;
}
.footer-col h4{
  font-size:15px;
  margin-bottom:18px;
  color:var(--text);
  letter-spacing:.02em;
}
.footer-col ul li{
  margin-bottom:12px;
}
.footer-col ul li a{
  font-size:14.5px;
  color:var(--text-2);
  position:relative;
}
.footer-col ul li a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-3px;
  height:1px;
  background:var(--grad-hero);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .3s ease;
}
.footer-col ul li a:hover{color:var(--text);}
.footer-col ul li a:hover::after{transform:scaleX(1);}
.footer-contact li{
  display:flex;
  gap:10px;
  font-size:14.5px;
  color:var(--text-2);
  margin-bottom:12px;
}
.footer-contact b{
  flex:0 0 auto;
  color:var(--text-3);
  font-weight:600;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  justify-content:space-between;
  padding-top:26px;
  font-size:13.5px;
  color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 22px;}
}
@media (max-width:1023px){
  .nav-menu{
    position:fixed;
    left:0;right:0;top:68px;bottom:0;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    padding:24px;
    background:rgba(10,12,18,.985);
    backdrop-filter:blur(16px);
    transform:translateX(100%);
    opacity:0;
    pointer-events:none;
    transition:transform .34s ease,opacity .3s ease;
    overflow-y:auto;
    margin-left:0;
  }
  .nav-menu.open{
    transform:translateX(0);
    opacity:1;
    pointer-events:auto;
  }
  .nav-link{
    font-size:18px;
    padding:16px 18px;
    border-radius:14px;
  }
  .nav-link::after{display:none;}
  .nav-toggle{display:block;}
  .nav-actions .btn{display:none;}
  .col-7,.col-5,.col-6,.col-4,.col-8{grid-column:span 12;}
  .side-panel{position:static;}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .cta-inner{grid-template-columns:1fr;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 16px;}
  .nav-wrap{height:60px;gap:14px;}
  .nav-menu{top:60px;}
  .brand-text{font-size:17px;}
  .section{padding:56px 0;}
  .section.tight{padding-top:32px;}
  .section-head{margin-bottom:32px;}
  .hero{padding:64px 0 48px;min-height:auto;}
  .hero-sub{font-size:16.5px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{flex:1 1 100%;}
  .hero-badges{
    flex-wrap:nowrap;
    overflow-x:auto;
    padding-bottom:6px;
    scrollbar-width:none;
  }
  .hero-badges::-webkit-scrollbar{display:none;}
  .prep-copy{padding:24px;}
  .step-card{padding:22px;}
  .side-panel{padding:24px;}
  .scene-grid{grid-template-columns:1fr;}
  .cta-band{padding:32px 22px;border-radius:22px;}
  .cta-actions .btn{flex:1 1 100%;}
  .faq-q{font-size:16px;padding:18px 18px;}
  .faq-a p{padding:0 18px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .site-footer{padding-top:52px;margin-top:64px;}
}
@media (max-width:520px){
  .brand-text{font-size:15.5px;}
  .brand-mark{width:32px;height:32px;font-size:15px;}
  .badge{height:30px;font-size:12.5px;padding:0 12px;}
  .hero h1{font-size:28px;}
}