/* roulang page: index */
:root{
  --xk-primary:#6C4DF6;
  --xk-primary-2:#7C5CFF;
  --xk-cyan:#2DE1C2;
  --xk-amber:#FFB86B;
  --xk-dark:#0E0B22;
  --xk-dark-2:#171235;
  --xk-dark-3:#1C1740;
  --xk-light:#F6F4FF;
  --xk-white:#FFFFFF;
  --xk-text-dark:#EDEBFF;
  --xk-text-dark-2:#A8A3CC;
  --xk-text-light:#191634;
  --xk-text-light-2:#5A5578;
  --xk-line:rgba(124,92,255,.18);
  --xk-line-2:rgba(124,92,255,.30);
  --xk-line-cyan:rgba(45,225,194,.45);
  --xk-grad:linear-gradient(135deg,#7C5CFF 0%,#2DE1C2 100%);
  --xk-grad-soft:linear-gradient(135deg,rgba(124,92,255,.16) 0%,rgba(45,225,194,.14) 100%);
  --xk-radius-lg:24px;
  --xk-radius:16px;
  --xk-radius-sm:12px;
  --xk-radius-pill:999px;
  --xk-shadow-light:0 1px 2px rgba(20,14,60,.06),0 12px 32px -8px rgba(76,52,178,.18);
  --xk-shadow-light-hover:0 2px 4px rgba(20,14,60,.08),0 20px 44px -10px rgba(76,52,178,.28);
  --xk-shadow-dark:0 16px 40px rgba(0,0,0,.45);
  --xk-shadow-glow:0 0 24px rgba(124,92,255,.45);
  --xk-section-y:112px;
  --xk-gap:24px;
  --xk-font:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}

/* ---------- base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--xk-font);
  font-size:16px;
  line-height:1.85;
  color:var(--xk-text-light);
  background:var(--xk-light);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--xk-radius)}
a{color:var(--xk-primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--xk-cyan)}
h1,h2,h3,h4,h5,h6{margin:0 0 16px;line-height:1.3;color:inherit;font-weight:800;letter-spacing:-.01em}
p{margin:0 0 16px}
ul,ol{margin:0 0 16px;padding:0;list-style:none}
button,input,textarea,select{font-family:inherit;font-size:16px}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--xk-cyan);outline-offset:2px}
strong{font-weight:700}
.num{font-variant-numeric:tabular-nums}

.xk-container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.xk-row{margin-left:-14px;margin-right:-14px}
.xk-row > .column,.xk-row > .columns{padding-left:14px;padding-right:14px;margin-bottom:28px}
.row{max-width:1200px}

/* ---------- header ---------- */
.xk-header{
  position:sticky;top:0;z-index:120;
  background:var(--xk-dark);
  transition:box-shadow .25s ease;
}
.xk-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,rgba(124,92,255,.95),rgba(45,225,194,.95));
}
.xk-header.is-scrolled{box-shadow:0 8px 24px rgba(0,0,0,.5)}
.xk-header-inner{
  max-width:1200px;margin:0 auto;padding:0 24px;
  display:flex;align-items:center;gap:28px;height:72px;
  transition:height .25s ease;
}
.xk-header.is-scrolled .xk-header-inner{height:60px}
.xk-logo{display:inline-flex;align-items:center;gap:10px;min-height:44px}
.xk-logo-mark{
  width:34px;height:34px;border-radius:12px;flex:0 0 34px;
  background:var(--xk-grad);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 0 18px rgba(124,92,255,.5);
}
.xk-logo-mark svg{width:18px;height:18px;display:block}
.xk-logo-text{
  font-size:17px;font-weight:800;letter-spacing:.02em;
  background:linear-gradient(120deg,#FFFFFF 20%,#C9BEFF 60%,#8FF3E3 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  white-space:nowrap;
}
.xk-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.xk-nav a{
  position:relative;display:inline-flex;align-items:center;
  min-height:44px;padding:6px 12px;font-size:15px;font-weight:500;
  color:var(--xk-text-dark-2);border-radius:10px;white-space:nowrap;
}
.xk-nav a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:8px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,#7C5CFF,#2DE1C2);opacity:0;transition:opacity .2s ease;
}
.xk-nav a:hover{color:var(--xk-text-dark)}
.xk-nav a:hover::after{opacity:.75;box-shadow:0 0 10px rgba(124,92,255,.7)}
.xk-nav a.active{
  font-weight:700;
  background:var(--xk-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.xk-nav a.active::after{opacity:1;box-shadow:0 0 12px rgba(124,92,255,.6)}
.xk-header-actions{display:flex;align-items:center;gap:12px;margin-left:8px}
.xk-burger{
  display:none;width:44px;height:44px;border-radius:12px;
  background:transparent;border:1px solid var(--xk-line-2);color:var(--xk-text-dark);
  align-items:center;justify-content:center;font-size:18px;
}
.xk-burger:hover{border-color:var(--xk-cyan);color:var(--xk-cyan)}

/* ---------- buttons ---------- */
.xk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:12px 26px;
  font-size:15px;font-weight:700;line-height:1.2;
  border-radius:var(--xk-radius-pill);border:1px solid transparent;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  cursor:pointer;text-align:center;
}
.xk-btn i{font-size:14px}
.xk-btn-primary{background:var(--xk-grad);color:#0E0B22}
.xk-btn-primary:hover{transform:translateY(-2px);box-shadow:var(--xk-shadow-glow);color:#0E0B22}
.xk-btn-outline{background:transparent;border-color:rgba(124,92,255,.55);color:var(--xk-text-dark)}
.xk-btn-outline:hover{background:var(--xk-grad);border-color:transparent;color:#0E0B22;transform:translateY(-2px);box-shadow:var(--xk-shadow-glow)}
.xk-btn-outline-light{background:transparent;border-color:rgba(108,77,246,.55);color:var(--xk-primary)}
.xk-btn-outline-light:hover{background:var(--xk-grad);border-color:transparent;color:#0E0B22;transform:translateY(-2px);box-shadow:0 0 24px rgba(124,92,255,.35)}
.xk-btn-sm{min-height:40px;padding:9px 20px;font-size:14px}
.xk-btn-block{width:100%}

.xk-text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--xk-primary)}
.xk-text-link i{transition:transform .2s ease}
.xk-text-link:hover{color:var(--xk-cyan)}
.xk-text-link:hover i{transform:translateX(4px)}
.xk-section--dark .xk-text-link{color:var(--xk-cyan)}
.xk-section--dark .xk-text-link:hover{color:#fff}

/* ---------- section shell ---------- */
.xk-section{padding:var(--xk-section-y) 0;position:relative}
.xk-section--light{background:var(--xk-light)}
.xk-section--white{background:var(--xk-white)}
.xk-section--dark{background:var(--xk-dark);color:var(--xk-text-dark)}
.xk-section--dark h1,.xk-section--dark h2,.xk-section--dark h3,.xk-section--dark h4{color:var(--xk-text-dark)}
.xk-section--dark p{color:var(--xk-text-dark-2)}
.xk-section--dark2{background:var(--xk-dark-2);color:var(--xk-text-dark)}
.xk-section--dark2 p{color:var(--xk-text-dark-2)}
.xk-glow-line{
  height:1px;border:0;margin:0;
  background:linear-gradient(90deg,rgba(124,92,255,0),rgba(124,92,255,.6),rgba(45,225,194,.6),rgba(45,225,194,0));
}
.xk-section-head{max-width:760px;margin-bottom:56px}
.xk-section-head.xk-center{margin-left:auto;margin-right:auto;text-align:center}
.xk-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--xk-primary);margin-bottom:14px;
}
.xk-section--dark .xk-eyebrow,.xk-section--dark2 .xk-eyebrow{color:var(--xk-cyan)}
.xk-eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--xk-grad)}
.xk-h1{font-size:clamp(30px,4vw,50px);line-height:1.22;font-weight:800;margin-bottom:20px}
.xk-h2{font-size:clamp(24px,3vw,34px);line-height:1.28;margin-bottom:16px}
.xk-h3{font-size:20px;line-height:1.4;margin-bottom:12px}
.xk-lead{font-size:17px;line-height:1.85;color:var(--xk-text-light-2)}
.xk-section--dark .xk-lead,.xk-section--dark2 .xk-lead{color:var(--xk-text-dark-2)}
.xk-grad-text{background:var(--xk-grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- tags ---------- */
.xk-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--xk-radius-pill);
  font-size:13px;font-weight:600;line-height:1.6;
  background:rgba(108,77,246,.10);color:#5438D6;
  border:1px solid rgba(108,77,246,.24);
}
.xk-section--dark .xk-tag,.xk-section--dark2 .xk-tag{
  background:rgba(124,92,255,.12);color:var(--xk-cyan);
  border-color:rgba(45,225,194,.35);
}

/* ---------- hero ---------- */
.xk-hero{
  position:relative;background:var(--xk-dark);color:var(--xk-text-dark);
  overflow:hidden;padding:88px 0 64px;
}
.xk-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.42;
}
.xk-hero-mask{
  position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(14,11,34,.94) 0%,rgba(28,23,64,.78) 100%);
}
.xk-hero-stars{
  position:absolute;inset:0;opacity:.5;
  background-image:
    radial-gradient(1.4px 1.4px at 12% 22%,rgba(255,255,255,.85),transparent),
    radial-gradient(1.2px 1.2px at 32% 68%,rgba(141,243,227,.8),transparent),
    radial-gradient(1.6px 1.6px at 58% 18%,rgba(255,255,255,.7),transparent),
    radial-gradient(1.2px 1.2px at 76% 52%,rgba(184,168,255,.85),transparent),
    radial-gradient(1.4px 1.4px at 88% 30%,rgba(255,255,255,.6),transparent),
    radial-gradient(1.1px 1.1px at 46% 86%,rgba(141,243,227,.7),transparent);
}
.xk-hero-inner{position:relative;z-index:2}
.xk-hero-badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.xk-hero-pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 14px;border-radius:var(--xk-radius-pill);
  font-size:13px;color:var(--xk-text-dark);
  background:rgba(23,18,53,.72);border:1px solid var(--xk-line-2);
}
.xk-hero-pill i{color:var(--xk-cyan);font-size:12px}
.xk-hero p.xk-hero-sub{
  font-size:18px;line-height:1.85;color:#CFC9EE;max-width:600px;margin-bottom:22px;
}
.xk-hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px}
.xk-hero-visual{position:relative}
.xk-hero-visual img{
  width:100%;border-radius:var(--xk-radius-lg);
  border:1px solid rgba(124,92,255,.35);
  box-shadow:var(--xk-shadow-dark);
}
.xk-hero-visual::after{
  content:"";position:absolute;inset:-14px;border-radius:32px;z-index:-1;
  background:var(--xk-grad);opacity:.16;filter:blur(28px);
}
.xk-float-badge{
  position:absolute;display:flex;flex-direction:column;gap:2px;
  padding:12px 18px;border-radius:var(--xk-radius);
  background:rgba(14,11,34,.88);border:1px solid var(--xk-line-2);
  backdrop-filter:blur(8px);box-shadow:var(--xk-shadow-dark);
}
.xk-float-badge strong{font-size:20px;font-weight:800;background:var(--xk-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.xk-float-badge span{font-size:12px;color:var(--xk-text-dark-2)}
.xk-float-badge--1{left:-14px;bottom:34px}
.xk-float-badge--2{right:-10px;top:28px}

/* hero metrics */
.xk-metrics{
  position:relative;z-index:2;margin-top:56px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
}
.xk-metric{
  padding:20px 22px;border-radius:var(--xk-radius);
  background:rgba(23,18,53,.72);border:1px solid var(--xk-line-2);
  box-shadow:0 10px 30px rgba(0,0,0,.32);
}
.xk-metric strong{
  display:block;font-size:30px;font-weight:800;line-height:1.2;
  font-variant-numeric:tabular-nums;
  background:var(--xk-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.xk-metric span{display:block;font-size:13px;color:var(--xk-text-dark-2);margin-top:4px}

/* ---------- cards ---------- */
.xk-card{
  background:var(--xk-white);border:1px solid var(--xk-line);
  border-radius:var(--xk-radius-lg);box-shadow:var(--xk-shadow-light);
  overflow:hidden;height:100%;
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.xk-card:hover{transform:translateY(-4px);border-color:rgba(45,225,194,.7);box-shadow:var(--xk-shadow-light-hover)}
.xk-card-body{padding:24px 26px 28px}
.xk-card-thumb{position:relative;overflow:hidden}
.xk-card-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s ease}
.xk-card:hover .xk-card-thumb img{transform:scale(1.04)}
.xk-section--dark .xk-card,.xk-section--dark2 .xk-card{
  background:rgba(23,18,53,.92);
  border-color:var(--xk-line-2);
  box-shadow:inset 0 0 0 1px rgba(124,92,255,.16),var(--xk-shadow-dark);
  color:var(--xk-text-dark);
}
.xk-section--dark .xk-card:hover,.xk-section--dark2 .xk-card:hover{border-color:var(--xk-line-cyan)}

.xk-card p{color:var(--xk-text-light-2);margin-bottom:16px}
.xk-section--dark .xk-card p,.xk-section--dark2 .xk-card p{color:var(--xk-text-dark-2)}

/* ---------- services ---------- */
.xk-service-feature{display:flex;flex-direction:column}
.xk-service-feature .xk-card-thumb{height:260px}
.xk-service-side{display:flex;flex-direction:column;gap:24px;height:100%}
.xk-service-mini{
  display:flex;gap:18px;align-items:flex-start;padding:24px;height:auto;
}
.xk-service-mini .xk-icon{
  flex:0 0 52px;width:52px;height:52px;border-radius:16px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:20px;color:#0E0B22;background:var(--xk-grad);
  box-shadow:0 0 18px rgba(124,92,255,.35);
}
.xk-service-mini h3{font-size:19px;margin-bottom:8px}
.xk-service-mini p{margin-bottom:0;font-size:15px}
.xk-service-banner{
  display:flex;flex-wrap:wrap;align-items:center;gap:20px;
  padding:24px 26px;border-radius:var(--xk-radius-lg);
  background:var(--xk-grad-soft);
  border:1px dashed rgba(108,77,246,.35);
}
.xk-service-banner .xk-service-banner-text{flex:1 1 260px}
.xk-service-banner h3{font-size:19px;margin-bottom:6px}
.xk-service-banner p{margin-bottom:0;font-size:15px}

/* ---------- stats (dark) ---------- */
.xk-stat-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--xk-line);
}
.xk-stat{
  padding:34px 28px;position:relative;
}
.xk-stat + .xk-stat::before{
  content:"";position:absolute;left:0;top:32px;bottom:32px;width:1px;
  background:linear-gradient(180deg,rgba(124,92,255,0),rgba(124,92,255,.55),rgba(45,225,194,.35),rgba(45,225,194,0));
}
.xk-stat strong{
  display:block;font-size:34px;font-weight:800;line-height:1.15;margin-bottom:8px;
  font-variant-numeric:tabular-nums;
  background:var(--xk-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.xk-stat b{display:block;font-size:16px;font-weight:700;color:var(--xk-text-dark);margin-bottom:6px}
.xk-stat span{display:block;font-size:14px;line-height:1.75;color:var(--xk-text-dark-2)}

/* ---------- cases ---------- */
.xk-case-row{align-items:center;margin-bottom:72px}
.xk-case-row:last-child{margin-bottom:0}
.xk-case-media img{
  width:100%;border-radius:var(--xk-radius-lg);
  border:1px solid var(--xk-line);
  box-shadow:var(--xk-shadow-light);
}
.xk-case-text h3{font-size:24px;margin:16px 0 14px}
.xk-case-text p{color:var(--xk-text-light-2)}
.xk-case-points{margin:0 0 22px}
.xk-case-points li{
  position:relative;padding-left:22px;margin-bottom:10px;
  font-size:15px;color:var(--xk-text-light-2);
}
.xk-case-points li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;
  background:var(--xk-cyan);box-shadow:0 0 10px rgba(45,225,194,.7);
}

/* ---------- plans (dark) ---------- */
.xk-plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.xk-plan{
  padding:32px 28px;border-radius:var(--xk-radius-lg);
  background:rgba(23,18,53,.9);
  border:1px solid var(--xk-line-2);
  box-shadow:inset 0 0 0 1px rgba(124,92,255,.14),var(--xk-shadow-dark);
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.xk-plan:hover{transform:translateY(-4px);border-color:var(--xk-line-cyan);box-shadow:0 0 26px rgba(124,92,255,.28)}
.xk-plan .xk-plan-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:14px;margin-bottom:18px;
  font-weight:800;font-size:16px;color:#0E0B22;background:var(--xk-grad);
  font-variant-numeric:tabular-nums;
}
.xk-plan h3{font-size:20px;margin-bottom:10px}
.xk-plan p{font-size:15px;color:var(--xk-text-dark-2);margin-bottom:18px}
.xk-plan ul li{
  position:relative;padding-left:20px;font-size:14px;color:var(--xk-text-dark-2);margin-bottom:8px;
}
.xk-plan ul li::before{
  content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:50%;
  background:var(--xk-cyan);box-shadow:0 0 8px rgba(45,225,194,.7);
}

/* ---------- posts ---------- */
.xk-post-card{display:flex;flex-direction:column}
.xk-post-card .xk-card-thumb{height:190px}
.xk-post-card .xk-card-body{display:flex;flex-direction:column;flex:1 1 auto;padding:22px 24px 26px}
.xk-post-title{font-size:18px;line-height:1.5;margin:14px 0 10px;min-height:54px}
.xk-post-title a{color:inherit}
.xk-post-title a:hover{color:var(--xk-primary)}
.xk-post-excerpt{
  font-size:14px;line-height:1.78;color:var(--xk-text-light-2);
  margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.xk-post-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--xk-line);
  display:flex;align-items:center;gap:12px;font-size:13px;color:var(--xk-text-light-2);
}
.xk-post-meta i{color:var(--xk-cyan)}
.xk-empty{
  padding:56px 28px;text-align:center;border-radius:var(--xk-radius-lg);
  background:var(--xk-white);border:1px dashed rgba(108,77,246,.4);
}
.xk-empty i{font-size:30px;color:var(--xk-primary);margin-bottom:14px;display:block}
.xk-empty p{color:var(--xk-text-light-2);margin-bottom:18px}

/* ---------- faq ---------- */
.xk-faq{border:0;background:transparent;margin:0}
.xk-faq .accordion-item{
  border:1px solid var(--xk-line-2);border-radius:var(--xk-radius);
  background:rgba(23,18,53,.78);margin-bottom:14px;overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.xk-faq .accordion-item.is-active{border-color:var(--xk-line-cyan);box-shadow:0 0 22px rgba(124,92,255,.22)}
.xk-faq .accordion-title{
  display:block;position:relative;padding:20px 56px 20px 24px;
  font-size:18px;font-weight:700;line-height:1.55;color:var(--xk-text-dark);
  background:transparent;border:0;border-bottom:0;
}
.xk-faq .accordion-title:hover{color:var(--xk-cyan)}
.xk-faq .accordion-title::before{
  content:"\002B";position:absolute;right:22px;top:50%;
  transform:translateY(-50%);
  width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;color:var(--xk-cyan);background:rgba(45,225,194,.12);
  transition:transform .25s ease;border:0;
}
.xk-faq .accordion-item.is-active .accordion-title::before{transform:translateY(-50%) rotate(180deg)}
.xk-faq .accordion-item.is-active .accordion-title{color:var(--xk-text-dark)}
.xk-faq .accordion-content{
  padding:0 24px;border:0;background:transparent;color:var(--xk-text-dark-2);
  display:block;max-height:0;overflow:hidden;
  transition:max-height .3s ease,padding .3s ease;
}
.xk-faq .accordion-content p{color:var(--xk-text-dark-2);font-size:15px;line-height:1.85;margin-bottom:0}
.xk-faq .accordion-item.is-active > .accordion-content{padding:0 24px 20px;max-height:460px}
.xk-faq .accordion-item.is-active .accordion-content::before{
  content:"";display:block;width:3px;height:0;
}
html.no-js .xk-faq .accordion-content{max-height:none;padding:0 24px 20px}

/* ---------- form / cta ---------- */
.xk-cta-panel{
  padding:44px;border-radius:var(--xk-radius-lg);
  background:linear-gradient(135deg,rgba(124,92,255,.16),rgba(45,225,194,.10));
  border:1px solid var(--xk-line-2);
  box-shadow:var(--xk-shadow-dark);
}
.xk-contact-list{margin:24px 0 0}
.xk-contact-list li{
  display:flex;align-items:flex-start;gap:12px;font-size:15px;color:var(--xk-text-dark-2);margin-bottom:14px;
}
.xk-contact-list i{color:var(--xk-cyan);margin-top:5px}
.xk-form .xk-field{margin-bottom:20px}
.xk-form label{display:block;font-size:14px;font-weight:600;color:var(--xk-text-dark);margin-bottom:8px}
.xk-form input,.xk-form textarea{
  width:100%;padding:13px 16px;border-radius:var(--xk-radius-sm);
  background:rgba(14,11,34,.7);border:1px solid var(--xk-line-2);
  color:var(--xk-text-dark);line-height:1.6;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.xk-form textarea{min-height:120px;resize:vertical}
.xk-form input::placeholder,.xk-form textarea::placeholder{color:#7C76A8}
.xk-form input:focus,.xk-form textarea:focus{
  outline:none;border-color:var(--xk-cyan);
  box-shadow:0 0 0 3px rgba(45,225,194,.18);
}
.xk-form-error{display:block;min-height:20px;margin-top:6px;font-size:13px;color:var(--xk-amber)}
.xk-form-note{font-size:13px;color:var(--xk-text-dark-2);margin:14px 0 0}
.xk-form-success{
  display:none;margin-top:18px;padding:14px 18px;border-radius:var(--xk-radius-sm);
  background:rgba(45,225,194,.12);border:1px solid var(--xk-line-cyan);
  font-size:14px;color:var(--xk-text-dark);
}
.xk-form-success.is-visible{display:block}

/* ---------- footer ---------- */
.xk-footer{background:#0A0819;color:var(--xk-text-dark-2);padding:64px 0 0;position:relative}
.xk-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(124,92,255,0),rgba(124,92,255,.7),rgba(45,225,194,.7),rgba(45,225,194,0));
}
.xk-footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.xk-footer h4{
  font-size:14px;font-weight:700;letter-spacing:.06em;margin-bottom:18px;
  background:linear-gradient(90deg,#B9A7FF,#7CF0DD);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.xk-footer-brand .xk-logo-text{font-size:16px}
.xk-footer-brand p{font-size:14px;line-height:1.8;color:var(--xk-text-dark-2);margin:16px 0 0;max-width:320px}
.xk-footer ul li{margin-bottom:10px}
.xk-footer ul a{font-size:14px;color:var(--xk-text-dark-2)}
.xk-footer ul a:hover{color:var(--xk-cyan)}
.xk-footer-contact li{font-size:14px;color:var(--xk-text-dark-2);display:flex;gap:10px;align-items:flex-start;margin-bottom:12px}
.xk-footer-contact i{color:var(--xk-cyan);margin-top:5px}
.xk-footer-bottom{
  margin-top:52px;padding:22px 0 26px;border-top:1px solid rgba(124,92,255,.16);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:#8C87B5;
}
.xk-footer-bottom a{color:#8C87B5}
.xk-footer-bottom a:hover{color:var(--xk-cyan)}

/* ---------- responsive ---------- */
@media screen and (max-width:1023px){
  :root{--xk-section-y:72px}
  .xk-nav{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;margin-left:0;
    background:#0E0B22;border-top:1px solid var(--xk-line);
    border-bottom:2px solid transparent;
    padding:8px 16px 20px;
    max-height:0;overflow:hidden;opacity:0;pointer-events:none;
    transition:max-height .32s ease,opacity .24s ease,padding .3s ease;
    box-shadow:0 18px 40px rgba(0,0,0,.55);
  }
  .xk-nav.is-open{max-height:420px;opacity:1;pointer-events:auto}
  .xk-nav a{
    display:flex;justify-content:flex-start;
    padding:14px 14px 14px 18px;font-size:16px;
    border-bottom:1px solid rgba(124,92,255,.16);
  }
  .xk-nav a::after{content:none}
  .xk-nav a.active{
    background:var(--xk-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  }
  .xk-nav a.active::before{
    content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:3px;
    background:var(--xk-grad);box-shadow:0 0 10px rgba(124,92,255,.7);
  }
  .xk-burger{display:inline-flex}
  .xk-header-actions .xk-btn{display:none}
  .xk-hero{padding:64px 0 52px}
  .xk-float-badge--1{left:0;bottom:-18px}
  .xk-float-badge--2{right:0;top:-16px}
  .xk-metrics{grid-template-columns:repeat(2,1fr);margin-top:48px}
  .xk-stat-grid{grid-template-columns:repeat(2,1fr)}
  .xk-stat{padding:28px 20px}
  .xk-stat:nth-child(odd) + .xk-stat::before{display:block}
  .xk-stat-grid .xk-stat:nth-child(3)::before{display:none}
  .xk-plan-grid{grid-template-columns:1fr;gap:18px}
  .xk-case-row{margin-bottom:56px}
  .xk-footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media screen and (max-width:640px){
  :root{--xk-section-y:56px}
  .xk-header-inner{height:64px;gap:12px;padding:0 16px}
  .xk-header.is-scrolled .xk-header-inner{height:56px}
  .xk-logo-text{font-size:15px}
  body{font-size:15.5px}
  .xk-h1{font-size:30px}
  .xk-h2{font-size:24px}
  .xk-hero{padding:52px 0 44px}
  .xk-hero p.xk-hero-sub{font-size:16px}
  .xk-hero-actions{gap:12px}
  .xk-hero-actions .xk-btn{width:100%}
  .xk-metrics{grid-template-columns:repeat(2,1fr);gap:12px}
  .xk-metric{padding:16px 14px}
  .xk-metric strong{font-size:22px}
  .xk-stat-grid{grid-template-columns:1fr}
  .xk-stat + .xk-stat::before{display:none}
  .xk-stat + .xk-stat{border-top:1px solid var(--xk-line)}
  .xk-card-body{padding:20px 20px 24px}
  .xk-cta-panel{padding:26px 20px}
  .xk-footer-grid{grid-template-columns:1fr;gap:28px}
  .xk-footer{padding-top:48px}
  .xk-footer-bottom{flex-direction:column;align-items:flex-start}
  .xk-faq .accordion-title{font-size:16px;padding:16px 48px 16px 18px}
  .xk-faq .accordion-content{padding:0 18px}
  .xk-faq .accordion-item.is-active > .accordion-content{padding:0 18px 18px}
  .xk-service-feature .xk-card-thumb{height:190px}
  .xk-service-mini{flex-direction:column}
}

/* roulang page: article */
:root{
  --xk-purple:#6C4DF6;
  --xk-purple-soft:#7C5CFF;
  --xk-cyan:#2DE1C2;
  --xk-amber:#FFB86B;
  --xk-grad:linear-gradient(135deg,#7C5CFF 0%,#2DE1C2 100%);
  --xk-dark:#0E0B22;
  --xk-dark-2:#171235;
  --xk-light:#F6F4FF;
  --xk-card:#FFFFFF;
  --xk-text-dark:#EDEBFF;
  --xk-muted-dark:#A8A3CC;
  --xk-text-light:#191634;
  --xk-muted-light:#5A5578;
  --xk-border:rgba(124,92,255,.18);
  --xk-border-strong:rgba(124,92,255,.36);
  --xk-shadow-light:0 1px 2px rgba(20,14,60,.06),0 12px 32px -8px rgba(76,52,178,.18);
  --xk-shadow-dark:0 16px 40px rgba(0,0,0,.45);
  --xk-radius-lg:24px;
  --xk-radius-md:16px;
  --xk-radius-sm:12px;
  --xk-radius-pill:999px;
  --xk-container:1200px;
  --xk-section-y:104px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--xk-text-light);
  background:var(--xk-light);
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--xk-purple);text-decoration:none;transition:color .22s ease,background .22s ease,box-shadow .22s ease,transform .22s ease}
a:hover{color:var(--xk-cyan)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.3;letter-spacing:.01em;color:inherit}
p{margin:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea{font:inherit}
:focus-visible{outline:2px solid var(--xk-cyan);outline-offset:3px}
.xk-container{width:100%;max-width:var(--xk-container);margin:0 auto;padding:0 24px}
.xk-glow-line{height:1px;width:100%;background:linear-gradient(90deg,rgba(124,92,255,0) 0%,rgba(124,92,255,.75) 45%,rgba(45,225,194,.7) 70%,rgba(45,225,194,0) 100%)}

/* ============ 按钮 ============ */
.xk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--xk-radius-pill);
  font-size:15px;font-weight:700;letter-spacing:.02em;border:1px solid transparent;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  min-height:44px;
}
.xk-btn-primary{background:var(--xk-grad);color:#0E0B22;box-shadow:0 10px 26px -12px rgba(124,92,255,.85)}
.xk-btn-primary:hover{color:#0E0B22;transform:translateY(-2px);box-shadow:0 0 24px rgba(124,92,255,.45),0 14px 30px -14px rgba(45,225,194,.7)}
.xk-btn-ghost{background:transparent;border-color:var(--xk-border-strong);color:var(--xk-purple)}
.xk-btn-ghost:hover{background:var(--xk-grad);border-color:transparent;color:#0E0B22;transform:translateY(-2px);box-shadow:0 0 24px rgba(124,92,255,.4)}
.xk-btn-dark{background:rgba(124,92,255,.12);border-color:var(--xk-border-strong);color:var(--xk-text-dark)}
.xk-btn-dark:hover{background:var(--xk-grad);color:#0E0B22;transform:translateY(-2px);box-shadow:0 0 24px rgba(124,92,255,.45)}
.xk-btn-sm{padding:10px 20px;font-size:14px}

/* ============ 导航 ============ */
.xk-header{
  position:sticky;top:0;z-index:60;background:var(--xk-dark);
  border-bottom:2px solid transparent;
  border-image:linear-gradient(90deg,#7C5CFF,#2DE1C2) 1;
}
.xk-header-inner{
  max-width:var(--xk-container);margin:0 auto;padding:0 24px;
  height:72px;display:flex;align-items:center;gap:24px;transition:height .25s ease;
}
.xk-header.is-scrolled .xk-header-inner{height:60px;box-shadow:0 8px 24px rgba(0,0,0,.5)}
.xk-logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--xk-text-dark)}
.xk-logo:hover{color:var(--xk-text-dark)}
.xk-logo-mark{
  width:34px;height:34px;border-radius:12px;background:var(--xk-grad);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 0 18px rgba(124,92,255,.55);
}
.xk-logo-mark svg{width:20px;height:20px}
.xk-logo-text{font-size:18px;font-weight:800;letter-spacing:.02em;white-space:nowrap}
.xk-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.xk-nav a{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 14px;border-radius:var(--xk-radius-sm);
  font-size:15px;color:var(--xk-muted-dark);font-weight:500;
  transition:color .22s ease;
}
.xk-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--xk-grad);opacity:0;transform:scaleX(.4);transition:opacity .22s ease,transform .22s ease;
}
.xk-nav a:hover{color:var(--xk-text-dark)}
.xk-nav a:hover::after{opacity:.85;transform:scaleX(1)}
.xk-nav a.active{
  background:linear-gradient(135deg,#7C5CFF,#2DE1C2);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  font-weight:700;
}
.xk-nav a.active::after{opacity:1;transform:scaleX(1);box-shadow:0 0 12px rgba(124,92,255,.6)}
.xk-header-actions{display:flex;align-items:center;gap:12px}
.xk-burger{
  display:none;width:44px;height:44px;border-radius:var(--xk-radius-sm);
  border:1px solid var(--xk-border-strong);color:var(--xk-text-dark);
  align-items:center;justify-content:center;font-size:18px;
}
.xk-burger:hover{background:rgba(124,92,255,.18)}

/* ============ 文章头区 ============ */
.xk-article-hero{
  position:relative;color:var(--xk-text-dark);
  background-image:linear-gradient(135deg,rgba(14,11,34,.94) 0%,rgba(28,23,64,.78) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  padding:56px 0 72px;overflow:hidden;
}
.xk-article-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px),radial-gradient(rgba(45,225,194,.35) 1px,transparent 1px);
  background-size:110px 110px,170px 170px;background-position:0 0,40px 60px;opacity:.28;
}
.xk-article-hero .xk-container{position:relative;z-index:2}
.xk-breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--xk-muted-dark);margin-bottom:26px}
.xk-breadcrumb a{color:var(--xk-muted-dark)}
.xk-breadcrumb a:hover{color:var(--xk-cyan)}
.xk-breadcrumb .xk-sep{color:rgba(168,163,204,.6)}
.xk-breadcrumb .xk-current{color:var(--xk-text-dark)}
.xk-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 16px;border-radius:var(--xk-radius-pill);
  font-size:13px;font-weight:600;letter-spacing:.04em;
  border:1px solid rgba(45,225,194,.45);color:var(--xk-cyan);
  background:rgba(45,225,194,.08);
}
.xk-article-hero h1{
  font-size:clamp(30px,4.2vw,50px);font-weight:800;line-height:1.24;
  margin:20px 0 22px;max-width:900px;color:#FFFFFF;
}
.xk-meta{display:flex;flex-wrap:wrap;gap:10px 26px;font-size:14px;color:var(--xk-muted-dark);margin-bottom:30px}
.xk-meta span{display:inline-flex;align-items:center;gap:8px}
.xk-meta i{color:var(--xk-cyan)}

/* ============ 正文区 ============ */
.xk-section{padding:var(--xk-section-y) 0}
.xk-article-section{background:var(--xk-light)}
.xk-article-body{
  max-width:820px;margin:0 auto;
  font-size:16.5px;line-height:1.95;color:var(--xk-text-light);
  word-break:break-word;
}
.xk-article-body > *:first-child{margin-top:0}
.xk-article-body h2{
  font-size:clamp(23px,2.6vw,32px);margin:44px 0 20px;padding-left:18px;
  border-left:3px solid var(--xk-purple);color:#191634;
}
.xk-article-body h3{font-size:20px;margin:30px 0 16px;color:#2A2450}
.xk-article-body h4{font-size:17px;margin:24px 0 12px;color:#3A3466}
.xk-article-body p{margin:0 0 1.2em;color:#2E2950}
.xk-article-body ul,.xk-article-body ol{margin:0 0 1.3em}
.xk-article-body li{position:relative;padding-left:24px;margin-bottom:10px;color:#2E2950}
.xk-article-body li::before{
  content:"";position:absolute;left:2px;top:.72em;width:8px;height:8px;border-radius:50%;
  background:var(--xk-cyan);box-shadow:0 0 8px rgba(45,225,194,.6);
}
.xk-article-body ol{counter-reset:xk-item}
.xk-article-body ol li{counter-increment:xk-item;padding-left:36px}
.xk-article-body ol li::before{
  content:counter(xk-item);top:.28em;left:0;width:22px;height:22px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;color:#0E0B22;background:var(--xk-grad);border-radius:50%;
  box-shadow:none;
}
.xk-article-body blockquote{
  margin:26px 0;padding:20px 26px;background:#F1EDFF;
  border-left:3px solid var(--xk-purple);border-radius:0 var(--xk-radius-sm) var(--xk-radius-sm) 0;
  color:#3A3466;font-size:16px;
}
.xk-article-body blockquote p:last-child{margin-bottom:0}
.xk-article-body img{
  border-radius:var(--xk-radius-md);margin:26px auto;
  box-shadow:0 12px 32px -12px rgba(76,52,178,.35);
}
.xk-article-body figure{margin:26px 0}
.xk-article-body figcaption{font-size:13px;color:var(--xk-muted-light);text-align:center;margin-top:10px}
.xk-article-body a{color:var(--xk-purple);border-bottom:1px solid rgba(108,77,246,.35)}
.xk-article-body a:hover{color:#1FA98F;border-bottom-color:rgba(45,225,194,.6)}
.xk-article-body strong{font-weight:700;color:#191634}
.xk-article-body hr{border:0;height:1px;margin:36px 0;background:linear-gradient(90deg,rgba(124,92,255,0),rgba(124,92,255,.55),rgba(45,225,194,0))}
.xk-article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;background:#fff;border-radius:var(--xk-radius-sm);overflow:hidden;box-shadow:var(--xk-shadow-light)}
.xk-article-body th{background:#EFEBFF;color:#2A2450;font-weight:700;text-align:left}
.xk-article-body th,.xk-article-body td{padding:12px 16px;border-bottom:1px solid var(--xk-border)}
.xk-article-body code{background:#EFEBFF;color:#4B3FBF;padding:2px 7px;border-radius:6px;font-size:14px}

.xk-empty{
  text-align:center;background:var(--xk-card);border:1px solid var(--xk-border);
  border-radius:var(--xk-radius-lg);padding:64px 32px;box-shadow:var(--xk-shadow-light);
}
.xk-empty i{font-size:38px;color:var(--xk-purple)}
.xk-empty h2{font-size:24px;margin:18px 0 12px;border:0;padding:0}
.xk-empty p{color:var(--xk-muted-light);margin-bottom:26px}

/* ============ 相关推荐区 ============ */
.xk-related{background:var(--xk-dark);color:var(--xk-text-dark);padding:var(--xk-section-y) 0}
.xk-section-head{max-width:760px;margin-bottom:52px}
.xk-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.14em;
  color:var(--xk-cyan);text-transform:uppercase;margin-bottom:16px;
}
.xk-eyebrow::before{content:"";width:26px;height:2px;border-radius:2px;background:var(--xk-grad)}
.xk-section-head h2{font-size:clamp(24px,3vw,36px);margin-bottom:16px;color:#fff}
.xk-section-head p{color:var(--xk-muted-dark);font-size:16px}
.xk-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.xk-card{
  display:flex;flex-direction:column;background:var(--xk-dark-2);
  border:1px solid rgba(124,92,255,.22);border-radius:var(--xk-radius-lg);
  padding:28px;box-shadow:var(--xk-shadow-dark);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.xk-card:hover{transform:translateY(-4px);border-color:rgba(45,225,194,.6);box-shadow:0 20px 46px rgba(0,0,0,.5),0 0 26px rgba(45,225,194,.18)}
.xk-card-tag{
  align-self:flex-start;padding:5px 14px;border-radius:var(--xk-radius-pill);
  font-size:12px;font-weight:700;letter-spacing:.04em;color:var(--xk-amber);
  border:1px solid rgba(255,184,107,.5);background:rgba(255,184,107,.08);margin-bottom:18px;
}
.xk-card h3{font-size:20px;color:#fff;margin-bottom:14px;line-height:1.45}
.xk-card p{color:var(--xk-muted-dark);font-size:15px;flex:1}
.xk-card-link{display:inline-flex;align-items:center;gap:8px;margin-top:22px;font-size:14px;font-weight:700;color:var(--xk-cyan)}
.xk-card-link:hover{color:#fff;gap:12px}
.xk-related-foot{margin-top:56px;display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between}
.xk-related-foot p{color:var(--xk-muted-dark);font-size:15px}

/* ============ 页脚 ============ */
.xk-footer{background:#0A0819;color:var(--xk-muted-dark);padding:72px 0 28px;position:relative}
.xk-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(124,92,255,0) 0%,rgba(124,92,255,.6) 40%,rgba(45,225,194,.6) 70%,rgba(45,225,194,0) 100%);
}
.xk-footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.xk-footer-brand p{margin-top:18px;font-size:14.5px;line-height:1.85;max-width:320px}
.xk-footer h4{
  font-size:14px;font-weight:700;letter-spacing:.08em;margin-bottom:20px;
  background:linear-gradient(135deg,#7C5CFF,#2DE1C2);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.xk-footer ul li{margin-bottom:12px}
.xk-footer ul li a{font-size:14.5px;color:var(--xk-muted-dark)}
.xk-footer ul li a:hover{color:var(--xk-cyan)}
.xk-footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px}
.xk-footer-contact i{color:var(--xk-cyan);margin-top:5px}
.xk-footer-bottom{
  margin-top:52px;padding-top:24px;border-top:1px solid rgba(124,92,255,.16);
  display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;
  font-size:13px;color:rgba(168,163,204,.75);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--xk-section-y:72px}
  .xk-burger{display:inline-flex}
  .xk-nav{
    position:fixed;top:72px;left:0;right:0;bottom:0;z-index:55;
    flex-direction:column;align-items:stretch;gap:0;margin:0;padding:18px 20px 40px;
    background:rgba(14,11,34,.98);overflow-y:auto;
    transform:translateY(-12px);opacity:0;visibility:hidden;transition:opacity .25s ease,transform .25s ease,visibility .25s;
  }
  .xk-nav.is-open{transform:translateY(0);opacity:1;visibility:visible}
  .xk-nav a{
    padding:16px 18px;font-size:16px;border-bottom:1px solid rgba(124,92,255,.2);
    border-radius:0;color:var(--xk-text-dark);min-height:52px;
  }
  .xk-nav a::after{display:none}
  .xk-nav a.active{-webkit-text-fill-color:#2DE1C2;border-left:3px solid;border-image:linear-gradient(180deg,#7C5CFF,#2DE1C2) 1}
  .xk-header-actions .xk-btn{display:none}
  .xk-grid-3{grid-template-columns:repeat(2,1fr)}
  .xk-footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .xk-container{padding:0 18px}
  .xk-logo-text{font-size:16px}
  .xk-article-hero{padding:40px 0 56px}
  .xk-grid-3{grid-template-columns:1fr}
  .xk-meta{gap:8px 18px;font-size:13.5px}
  .xk-article-body{font-size:16px}
}
@media (max-width:520px){
  :root{--xk-section-y:56px}
  .xk-header-inner{padding:0 16px;height:64px}
  .xk-nav{top:64px}
  .xk-logo-mark{width:30px;height:30px}
  .xk-footer-grid{grid-template-columns:1fr}
  .xk-btn{padding:13px 22px;font-size:14px;width:100%}
  .xk-related-foot{align-items:stretch}
  .xk-related-foot .xk-btn{width:100%}
}

/* roulang page: category1 */
:root{
  --xk-purple:#6C4DF6;
  --xk-purple-2:#7C5CFF;
  --xk-cyan:#2DE1C2;
  --xk-amber:#FFB86B;
  --xk-dark:#0E0B22;
  --xk-dark-2:#171235;
  --xk-light:#F6F4FF;
  --xk-white:#FFFFFF;
  --xk-text-dark:#EDEBFF;
  --xk-text-dark-2:#A8A3CC;
  --xk-text-light:#191634;
  --xk-text-light-2:#5A5578;
  --xk-line:rgba(124,92,255,.18);
  --xk-line-strong:rgba(124,92,255,.34);
  --xk-grad:linear-gradient(135deg,#7C5CFF 0%,#2DE1C2 100%);
  --xk-grad-soft:linear-gradient(90deg,rgba(124,92,255,0),#7C5CFF 45%,#2DE1C2 65%,rgba(45,225,194,0));
  --xk-radius-lg:24px;
  --xk-radius-md:16px;
  --xk-radius-sm:12px;
  --xk-radius-pill:999px;
  --xk-shadow-light:0 1px 2px rgba(20,14,60,.06),0 12px 32px -8px rgba(76,52,178,.18);
  --xk-shadow-light-hover:0 2px 6px rgba(20,14,60,.08),0 22px 46px -12px rgba(76,52,178,.3);
  --xk-shadow-dark:0 16px 40px rgba(0,0,0,.45);
  --xk-space-section:104px;
  --xk-space-section-m:60px;
  --xk-font:"Inter","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; -webkit-text-size-adjust:100%; }
body{
  margin:0;
  font-family:var(--xk-font);
  font-size:16px;
  line-height:1.85;
  color:var(--xk-text-light);
  background:var(--xk-light);
  overflow-x:hidden;
}
img{ max-width:100%; display:block; border:0; }
a{ color:var(--xk-purple); text-decoration:none; transition:color .22s ease, opacity .22s ease; }
a:hover{ color:var(--xk-purple-2); }
p{ margin:0 0 1em; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ margin:0; font-weight:800; letter-spacing:.01em; color:var(--xk-text-light); line-height:1.35; }
h1{ font-size:46px; }
h2{ font-size:34px; }
h3{ font-size:21px; font-weight:700; }
h4{ font-size:15px; font-weight:700; }
button,input,textarea,select{ font-family:inherit; font-size:inherit; }
button{ cursor:pointer; }
:focus-visible{ outline:2px solid var(--xk-cyan); outline-offset:2px; }
::selection{ background:rgba(124,92,255,.28); }

/* Foundation 覆盖 */
.row{ max-width:1200px; margin-left:auto; margin-right:auto; }
.row .column{ padding-left:12px; padding-right:12px; }
body,ul,ol,dl,p,table{ font-family:var(--xk-font); }
a:not(.xk-btn){ background:transparent; }

/* 容器 */
.xk-container{ width:100%; max-width:1200px; margin:0 auto; padding:0 24px; }

/* 按钮 */
.xk-btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  min-height:48px; padding:0 26px; border-radius:var(--xk-radius-pill);
  font-size:15px; font-weight:700; border:1px solid transparent;
  transition:transform .24s ease, box-shadow .24s ease, background .24s ease, color .24s ease, border-color .24s ease;
  white-space:nowrap;
}
.xk-btn-sm{ min-height:42px; padding:0 20px; font-size:14px; }
.xk-btn-primary{ background:var(--xk-grad); color:#0B0920; }
.xk-btn-primary:hover{ color:#0B0920; transform:translateY(-2px); box-shadow:0 0 24px rgba(124,92,255,.45); }
.xk-btn-ghost{ background:transparent; border-color:rgba(124,92,255,.45); color:var(--xk-text-dark); }
.xk-btn-ghost:hover{ background:var(--xk-grad); color:#0B0920; border-color:transparent; transform:translateY(-2px); box-shadow:0 0 24px rgba(124,92,255,.4); }
.xk-btn-ghost-light{ background:transparent; border-color:rgba(108,77,246,.4); color:var(--xk-purple); }
.xk-btn-ghost-light:hover{ background:var(--xk-grad); color:#0B0920; border-color:transparent; transform:translateY(-2px); box-shadow:0 0 22px rgba(124,92,255,.35); }

/* 头部导航 */
.xk-header{
  position:fixed; top:0; left:0; right:0; z-index:90;
  background:rgba(14,11,34,.96);
  backdrop-filter:blur(12px);
  transition:box-shadow .3s ease, background .3s ease;
}
.xk-header::after{
  content:""; position:absolute; left:0; right:0; bottom:0; height:2px;
  background:var(--xk-grad-soft); opacity:.9;
}
.xk-header.is-scrolled{ box-shadow:0 8px 24px rgba(0,0,0,.5); }
.xk-header-inner{
  max-width:1200px; margin:0 auto; padding:0 24px;
  height:72px; display:flex; align-items:center; gap:20px;
  transition:height .3s ease;
}
.xk-header.is-scrolled .xk-header-inner{ height:60px; }
.xk-logo{ display:inline-flex; align-items:center; gap:10px; color:var(--xk-text-dark); font-weight:800; }
.xk-logo:hover{ color:#fff; }
.xk-logo-mark{
  width:34px; height:34px; border-radius:12px; background:var(--xk-grad);
  display:grid; place-items:center; box-shadow:0 0 18px rgba(124,92,255,.5);
  flex:0 0 auto;
}
.xk-logo-mark svg{ width:20px; height:20px; }
.xk-logo-text{ font-size:17px; letter-spacing:.02em; }

.xk-nav{ display:flex; align-items:center; gap:4px; margin-left:auto; }
.xk-nav a{
  position:relative; padding:10px 14px; border-radius:var(--xk-radius-pill);
  font-size:15px; color:var(--xk-text-dark-2);
  transition:color .22s ease, background .22s ease;
}
.xk-nav a::after{
  content:""; position:absolute; left:14px; right:14px; bottom:4px; height:2px;
  border-radius:2px; background:var(--xk-grad); opacity:0;
  transition:opacity .25s ease, box-shadow .25s ease;
}
.xk-nav a:hover{ color:var(--xk-text-dark); }
.xk-nav a:hover::after{ opacity:1; box-shadow:0 0 12px rgba(124,92,255,.6); }
.xk-nav a.active{
  background:var(--xk-grad);
  -webkit-background-clip:text; background-clip:text; color:transparent;
  font-weight:700;
}
.xk-nav a.active::after{ opacity:1; box-shadow:0 0 12px rgba(124,92,255,.6); }

.xk-header-actions{ display:flex; align-items:center; gap:12px; }
.xk-burger{
  display:none; width:44px; height:44px; border-radius:var(--xk-radius-sm);
  border:1px solid var(--xk-line-strong); background:transparent;
  color:var(--xk-text-dark); font-size:18px;
  align-items:center; justify-content:center;
  transition:border-color .22s ease, color .22s ease;
}
.xk-burger:hover{ border-color:var(--xk-cyan); color:#fff; }

/* 页头横幅 */
.xk-banner{
  position:relative; overflow:hidden;
  padding:158px 0 76px;
  background:var(--xk-dark);
  color:var(--xk-text-dark);
}
.xk-banner::before{
  content:""; position:absolute; inset:0;
  background-image:linear-gradient(135deg,rgba(14,11,34,.94) 0%,rgba(28,23,64,.78) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover; background-position:center;
}
.xk-banner::after{
  content:""; position:absolute; inset:0; pointer-events:none;
  background-image:radial-gradient(circle at 18% 26%,rgba(124,92,255,.32) 0,rgba(124,92,255,0) 42%),
                   radial-gradient(circle at 78% 18%,rgba(45,225,194,.22) 0,rgba(45,225,194,0) 40%),
                   radial-gradient(circle at 62% 82%,rgba(255,184,107,.14) 0,rgba(255,184,107,0) 38%);
}
.xk-banner .xk-container{ position:relative; z-index:2; }
.xk-banner h1{ color:#fff; font-size:44px; margin:18px 0 16px; max-width:900px; }
.xk-banner .xk-lead{
  color:var(--xk-text-dark-2); font-size:18px; line-height:1.85; max-width:720px; margin:0;
}
.xk-breadcrumb{
  display:flex; flex-wrap:wrap; align-items:center; gap:8px;
  font-size:13px; color:var(--xk-text-dark-2);
}
.xk-breadcrumb a{ color:var(--xk-text-dark-2); }
.xk-breadcrumb a:hover{ color:var(--xk-cyan); }
.xk-breadcrumb span.sep{ color:rgba(168,163,204,.6); }
.xk-breadcrumb .current{ color:#fff; }

.xk-hero-badges{ display:flex; flex-wrap:wrap; gap:12px; margin-top:32px; }
.xk-badge{
  display:inline-flex; align-items:center; gap:10px;
  padding:10px 18px; border-radius:var(--xk-radius-pill);
  background:rgba(23,18,53,.78);
  border:1px solid rgba(124,92,255,.32);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.02);
  font-size:13px; color:var(--xk-text-dark-2);
}
.xk-badge i{ color:var(--xk-cyan); font-size:13px; }
.xk-badge b{
  font-size:15px; font-weight:800; font-variant-numeric:tabular-nums;
  background:var(--xk-grad); -webkit-background-clip:text; background-clip:text; color:transparent;
}

/* 板块 */
.xk-section{ padding:var(--xk-space-section) 0; position:relative; }
.xk-section-light{ background:var(--xk-light); }
.xk-section-white{ background:#fff; }
.xk-section-dark{ background:var(--xk-dark); color:var(--xk-text-dark); }
.xk-section-head{ max-width:760px; margin-bottom:52px; }
.xk-section-head h2{ font-size:34px; margin-bottom:16px; }
.xk-section-head p{ color:var(--xk-text-light-2); font-size:16px; margin:0; }
.xk-section-dark .xk-section-head h2{ color:#fff; }
.xk-section-dark .xk-section-head p{ color:var(--xk-text-dark-2); }
.xk-eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-size:13px; font-weight:700; letter-spacing:.06em;
  color:var(--xk-purple); margin-bottom:14px;
}
.xk-eyebrow::before{
  content:""; width:26px; height:2px; border-radius:2px; background:var(--xk-grad);
}
.xk-section-dark .xk-eyebrow{ color:var(--xk-cyan); }
.xk-rule{
  height:1px; width:100%; border:0; margin:0;
  background:var(--xk-grad-soft); opacity:.32;
}

/* 卡片 */
.xk-grid-cards{ display:flex; flex-wrap:wrap; margin-left:-12px; margin-right:-12px; }
.xk-card{
  display:flex; flex-direction:column; height:100%;
  background:#fff; border:1px solid var(--xk-line);
  border-radius:var(--xk-radius-lg); overflow:hidden;
  box-shadow:var(--xk-shadow-light);
  transition:transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.xk-card:hover{
  transform:translateY(-4px);
  border-color:rgba(45,225,194,.55);
  box-shadow:var(--xk-shadow-light-hover);
}
.xk-card-media{ position:relative; aspect-ratio:16/10; overflow:hidden; background:#EDEBFF; }
.xk-card-media img{ width:100%; height:100%; object-fit:cover; transition:transform .5s ease; }
.xk-card:hover .xk-card-media img{ transform:scale(1.05); }
.xk-card-media::after{
  content:""; position:absolute; inset:0;
  background:linear-gradient(180deg,rgba(14,11,34,0) 45%,rgba(14,11,34,.32) 100%);
}
.xk-card-body{ display:flex; flex-direction:column; gap:14px; padding:26px; flex:1; }
.xk-card-body h3{ font-size:20px; line-height:1.5; }
.xk-card-body p{
  margin:0; color:var(--xk-text-light-2); font-size:15px; line-height:1.8;
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;
}
.xk-card-link{
  margin-top:auto; display:inline-flex; align-items:center; gap:8px;
  font-size:14px; font-weight:700; color:var(--xk-purple);
}
.xk-card-link i{ transition:transform .25s ease; font-size:12px; }
.xk-card:hover .xk-card-link i{ transform:translateX(4px); }
.xk-tag{
  display:inline-flex; align-items:center; gap:6px; align-self:flex-start;
  padding:5px 14px; border-radius:var(--xk-radius-pill);
  font-size:12px; font-weight:700; letter-spacing:.02em;
  color:var(--xk-purple); background:rgba(108,77,246,.1);
  border:1px solid rgba(108,77,246,.2);
}
.xk-tag.is-cyan{ color:#0E7C6B; background:rgba(45,225,194,.14); border-color:rgba(45,225,194,.34); }
.xk-tag.is-amber{ color:#9A5A12; background:rgba(255,184,107,.16); border-color:rgba(255,184,107,.36); }

/* 数据区 */
.xk-stats{ display:flex; flex-wrap:wrap; margin-left:-12px; margin-right:-12px; }
.xk-stat{
  display:flex; flex-direction:column; gap:12px; height:100%;
  padding:30px 26px; border-radius:var(--xk-radius-lg);
  background:var(--xk-dark-2);
  border:1px solid rgba(124,92,255,.22);
  box-shadow:var(--xk-shadow-dark);
  transition:border-color .3s ease, transform .3s ease;
}
.xk-stat:hover{ transform:translateY(-4px); border-color:rgba(45,225,194,.5); }
.xk-stat strong{
  font-size:32px; font-weight:800; line-height:1.2; font-variant-numeric:tabular-nums;
  background:var(--xk-grad); -webkit-background-clip:text; background-clip:text; color:transparent;
}
.xk-stat span.xk-stat-label{ font-size:15px; font-weight:700; color:var(--xk-text-dark); }
.xk-stat p{ margin:0; font-size:14px; line-height:1.8; color:var(--xk-text-dark-2); }

/* 步骤条 */
.xk-steps{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; margin-top:12px; }
.xk-step{
  position:relative; padding:28px 24px 26px;
  border-radius:var(--xk-radius-md);
  background:rgba(23,18,53,.72);
  border:1px solid rgba(124,92,255,.2);
}
.xk-step-num{
  display:inline-flex; align-items:center; justify-content:center;
  width:40px; height:40px; border-radius:var(--xk-radius-pill);
  background:var(--xk-grad); color:#0B0920; font-weight:800; font-size:15px;
  font-variant-numeric:tabular-nums; margin-bottom:16px;
}
.xk-step h3{ color:#fff; font-size:18px; margin-bottom:10px; }
.xk-step p{ margin:0; color:var(--xk-text-dark-2); font-size:14.5px; line-height:1.8; }

/* CTA */
.xk-cta-wrap{ padding:0 0 var(--xk-space-section); }
.xk-cta{
  position:relative; overflow:hidden;
  display:grid; grid-template-columns:1.05fr .95fr; gap:40px; align-items:center;
  padding:52px; border-radius:var(--xk-radius-lg);
  background:var(--xk-grad);
  box-shadow:0 24px 56px -20px rgba(76,52,178,.55);
  color:#0B0920;
}
.xk-cta::after{
  content:""; position:absolute; inset:0; pointer-events:none;
  background-image:radial-gradient(circle at 88% 12%,rgba(255,255,255,.34) 0,rgba(255,255,255,0) 46%);
}
.xk-cta > *{ position:relative; z-index:1; }
.xk-cta h2{ font-size:32px; color:#0B0920; margin-bottom:14px; }
.xk-cta p{ margin:0; font-size:16px; color:rgba(11,9,32,.82); max-width:520px; }
.xk-form-card{
  background:rgba(255,255,255,.94);
  border-radius:var(--xk-radius-md);
  padding:26px;
  box-shadow:0 18px 40px -18px rgba(24,16,70,.45);
}
.xk-form-card h3{ font-size:17px; margin-bottom:16px; color:var(--xk-text-light); }
.xk-field{ display:flex; gap:10px; }
.xk-input{
  flex:1 1 auto; width:100%; min-height:50px; padding:0 16px;
  border-radius:var(--xk-radius-sm);
  border:1px solid rgba(108,77,246,.28);
  background:#fff; color:var(--xk-text-light);
  transition:border-color .22s ease, box-shadow .22s ease;
}
.xk-input::placeholder{ color:#9A96BA; }
.xk-input:focus{
  outline:none; border-color:var(--xk-cyan);
  box-shadow:0 0 0 3px rgba(45,225,194,.18);
}
.xk-form-note{ margin:14px 0 0; font-size:13px; color:var(--xk-text-light-2); }
.xk-form-msg{ margin:10px 0 0; font-size:13px; font-weight:700; color:#9A5A12; display:none; }
.xk-form-msg.is-show{ display:block; }

/* 页脚 */
.xk-footer{
  position:relative; background:var(--xk-dark); color:var(--xk-text-dark-2);
  padding:80px 0 28px;
}
.xk-footer::before{
  content:""; position:absolute; top:0; left:0; right:0; height:1px;
  background:var(--xk-grad-soft); opacity:.6;
}
.xk-footer-grid{ display:grid; grid-template-columns:1.5fr 1fr 1fr 1.2fr; gap:40px; }
.xk-footer .xk-logo{ margin-bottom:16px; }
.xk-footer-brand p{ margin:0; font-size:14.5px; line-height:1.9; color:var(--xk-text-dark-2); max-width:330px; }
.xk-footer h4{
  font-size:14px; margin-bottom:18px; letter-spacing:.04em;
  background:var(--xk-grad); -webkit-background-clip:text; background-clip:text; color:transparent;
}
.xk-footer ul li{ margin-bottom:12px; }
.xk-footer ul li a{ font-size:14.5px; color:var(--xk-text-dark-2); }
.xk-footer ul li a:hover{ color:var(--xk-text-dark); }
.xk-footer-contact li{ display:flex; align-items:flex-start; gap:10px; font-size:14.5px; }
.xk-footer-contact i{ color:var(--xk-cyan); margin-top:6px; font-size:13px; }
.xk-footer-bottom{
  margin-top:56px; padding-top:22px;
  border-top:1px solid rgba(124,92,255,.18);
  display:flex; flex-wrap:wrap; justify-content:space-between; gap:12px;
  font-size:13px; color:rgba(168,163,204,.85);
}

/* 响应式 */
@media (max-width:1024px){
  h1{ font-size:36px; }
  h2{ font-size:28px; }
  .xk-banner{ padding:132px 0 64px; }
  .xk-banner h1{ font-size:36px; }
  .xk-banner .xk-lead{ font-size:16.5px; }
  .xk-burger{ display:inline-flex; }
  .xk-nav{
    position:fixed; top:72px; left:0; right:0;
    flex-direction:column; align-items:stretch; gap:0;
    background:#0E0B22; padding:12px 20px 26px;
    border-bottom:1px solid rgba(124,92,255,.3);
    max-height:calc(100vh - 72px); overflow-y:auto;
    display:none;
    box-shadow:0 24px 40px rgba(0,0,0,.55);
  }
  .xk-nav.is-open{ display:flex; }
  .xk-nav a{
    padding:16px 14px; border-radius:0;
    border-bottom:1px solid rgba(124,92,255,.14);
    font-size:15.5px;
  }
  .xk-nav a::after{ display:none; }
  .xk-nav a.active{
    background:var(--xk-grad);
    -webkit-background-clip:text; background-clip:text; color:transparent;
    box-shadow:inset 3px 0 0 0 rgba(124,92,255,.9);
  }
  .xk-section{ padding:var(--xk-space-section-m) 0; }
  .xk-section-head{ margin-bottom:36px; }
  .xk-section-head h2{ font-size:27px; }
  .xk-steps{ grid-template-columns:1fr; }
  .xk-cta{ grid-template-columns:1fr; padding:36px 28px; }
  .xk-cta h2{ font-size:26px; }
  .xk-cta-wrap{ padding-bottom:var(--xk-space-section-m); }
  .xk-footer{ padding:60px 0 24px; }
  .xk-footer-grid{ grid-template-columns:1fr 1fr; gap:32px; }
}

@media (max-width:640px){
  h1{ font-size:30px; }
  .xk-container{ padding:0 18px; }
  .xk-header-inner{ padding:0 18px; gap:12px; }
  .xk-logo-text{ font-size:15px; }
  .xk-header-actions .xk-btn-sm{ display:none; }
  .xk-banner{ padding:120px 0 52px; }
  .xk-banner h1{ font-size:29px; }
  .xk-hero-badges{ gap:8px; margin-top:24px; }
  .xk-badge{ padding:8px 14px; font-size:12.5px; }
  .xk-section-head h2{ font-size:23px; }
  .xk-card-body{ padding:20px; }
  .xk-field{ flex-direction:column; }
  .xk-field .xk-btn{ width:100%; }
  .xk-cta{ padding:28px 22px; border-radius:var(--xk-radius-md); }
  .xk-footer-grid{ grid-template-columns:1fr; gap:28px; }
  .xk-footer-bottom{ flex-direction:column; }
}

/* roulang page: category2 */
:root{
  --xk-primary:#6C4DF6;
  --xk-primary-strong:#7C5CFF;
  --xk-cyan:#2DE1C2;
  --xk-amber:#FFB86B;
  --xk-grad:linear-gradient(135deg,#7C5CFF 0%,#2DE1C2 100%);
  --xk-dark:#0E0B22;
  --xk-dark-2:#171235;
  --xk-light:#F6F4FF;
  --xk-card:#FFFFFF;
  --xk-text:#191634;
  --xk-text-muted:#5A5578;
  --xk-text-dark:#EDEBFF;
  --xk-text-dark-muted:#A8A3CC;
  --xk-border:rgba(124,92,255,.18);
  --xk-border-strong:rgba(124,92,255,.35);
  --xk-r-lg:24px;
  --xk-r-md:16px;
  --xk-r-sm:12px;
  --xk-r-pill:999px;
  --xk-shadow-card:0 1px 2px rgba(20,14,60,.06),0 12px 32px -8px rgba(76,52,178,.18);
  --xk-shadow-dark:0 16px 40px rgba(0,0,0,.45);
  --xk-sec-y:110px;
  --xk-font:"Inter",system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--xk-font);
  font-size:16px;
  line-height:1.85;
  color:var(--xk-text);
  background:var(--xk-light);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{
  margin:0 0 .55em;
  font-weight:800;
  line-height:1.32;
  letter-spacing:-.01em;
  color:inherit;
}
h1{font-size:clamp(30px,4.6vw,50px);}
h2{font-size:clamp(24px,3.3vw,36px);}
h3{font-size:clamp(19px,2vw,22px);}
p{margin:0 0 1em;}
a{color:var(--xk-primary);text-decoration:none;transition:color .22s ease,background-color .22s ease;}
a:hover{color:var(--xk-cyan);}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;}
:focus-visible{outline:2px solid var(--xk-cyan);outline-offset:2px;}

.grid-container{max-width:1280px;padding-left:24px;padding-right:24px;}
.grid-x.grid-padding-x{margin-left:-16px;margin-right:-16px;}
.grid-x.grid-padding-x>.cell{padding-left:16px;padding-right:16px;}

.xk-container{max-width:1280px;margin:0 auto;padding:0 24px;}
.xk-section{padding:var(--xk-sec-y) 0;background:var(--xk-light);}
.xk-section-white{padding:var(--xk-sec-y) 0;background:#FFFFFF;}
.xk-section-dark{padding:var(--xk-sec-y) 0;background:var(--xk-dark);color:var(--xk-text-dark);position:relative;overflow:hidden;}
.xk-section-dark::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(124,92,255,.35) 1px,transparent 1px),radial-gradient(rgba(45,225,194,.22) 1px,transparent 1px);
  background-size:120px 120px,180px 180px;
  background-position:0 0,60px 60px;
  opacity:.5;
}
.xk-section-dark>.grid-container{position:relative;z-index:2;}

.xk-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.12em;
  color:var(--xk-primary);
}
.xk-dark .xk-eyebrow,.xk-section-dark .xk-eyebrow{color:var(--xk-cyan);}
.xk-section-head{max-width:780px;margin-bottom:64px;}
.xk-section-head h2{margin:14px 0 16px;}
.xk-section-head p{color:var(--xk-text-muted);font-size:16.5px;margin:0;}
.xk-section-dark .xk-section-head p{color:var(--xk-text-dark-muted);}

.xk-divider-glow{height:1px;border:0;margin:0;background:linear-gradient(90deg,transparent,rgba(124,92,255,.6),rgba(45,225,194,.55),transparent);}

/* ---------- Header ---------- */
.xk-header{
  position:sticky;top:0;z-index:80;
  background:#0E0B22;
  transition:box-shadow .3s ease;
}
.xk-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,#7C5CFF,#2DE1C2);
  opacity:.9;
}
.xk-header.is-scrolled{box-shadow:0 8px 24px rgba(0,0,0,.5);}
.xk-header-inner{
  max-width:1280px;margin:0 auto;padding:0 24px;
  height:72px;display:flex;align-items:center;gap:28px;
  transition:height .3s ease;
}
.xk-header.is-scrolled .xk-header-inner{height:60px;}
.xk-logo{display:inline-flex;align-items:center;gap:10px;color:var(--xk-text-dark);font-weight:800;flex:0 0 auto;}
.xk-logo:hover{color:var(--xk-text-dark);}
.xk-logo-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,#7C5CFF,#2DE1C2);
  box-shadow:0 0 18px rgba(124,92,255,.45);flex:0 0 auto;
}
.xk-logo-mark svg{width:20px;height:20px;display:block;}
.xk-logo-text{font-size:18px;letter-spacing:.02em;white-space:nowrap;}

.xk-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.xk-nav a{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 14px;min-height:44px;
  color:var(--xk-text-dark-muted);font-size:15px;font-weight:500;
  border-radius:var(--xk-r-pill);white-space:nowrap;
}
.xk-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  background:linear-gradient(90deg,#7C5CFF,#2DE1C2);
  transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease,box-shadow .25s ease;
}
.xk-nav a:hover{color:var(--xk-text-dark);}
.xk-nav a:hover::after{transform:scaleX(1);box-shadow:0 0 10px rgba(124,92,255,.65);}
.xk-nav a.active{color:var(--xk-text-dark);font-weight:700;}
.xk-nav a.active::after{transform:scaleX(1);box-shadow:0 0 12px rgba(124,92,255,.6);}

.xk-header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.xk-burger{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(124,92,255,.12);border:1px solid var(--xk-border-strong);
  color:var(--xk-text-dark);cursor:pointer;font-size:17px;
  align-items:center;justify-content:center;
  transition:background .25s ease,box-shadow .25s ease;
}
.xk-burger:hover{background:rgba(124,92,255,.22);box-shadow:0 0 18px rgba(124,92,255,.4);}

/* ---------- Buttons ---------- */
.xk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:14px 26px;
  border-radius:var(--xk-r-pill);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;text-align:center;
  cursor:pointer;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
}
.xk-btn i{font-size:14px;}
.xk-btn-primary{background:linear-gradient(135deg,#7C5CFF,#2DE1C2);color:#0B0920;}
.xk-btn-primary:hover{color:#0B0920;transform:translateY(-2px);box-shadow:0 0 24px rgba(124,92,255,.45);}
.xk-btn-ghost{background:transparent;border-color:rgba(124,92,255,.55);color:var(--xk-text-dark);}
.xk-btn-ghost:hover{background:linear-gradient(135deg,#7C5CFF,#2DE1C2);color:#0B0920;transform:translateY(-2px);box-shadow:0 0 24px rgba(124,92,255,.4);}
.xk-btn-quiet{background:transparent;border-color:var(--xk-border-strong);color:var(--xk-primary);}
.xk-btn-quiet:hover{background:linear-gradient(135deg,#7C5CFF,#2DE1C2);color:#0B0920;transform:translateY(-2px);}
.xk-btn-sm{padding:10px 20px;font-size:14px;min-height:44px;}

/* ---------- Page hero ---------- */
.xk-page-hero{
  position:relative;overflow:hidden;
  padding:92px 0 84px;
  background:#0E0B22;color:var(--xk-text-dark);
}
.xk-page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(135deg,rgba(14,11,34,.92),rgba(28,23,64,.75)),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
}
.xk-page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(237,235,255,.4) 1px,transparent 1px);
  background-size:140px 140px;opacity:.28;
}
.xk-page-hero .grid-container{position:relative;z-index:3;}
.xk-page-hero h1{max-width:900px;margin:16px 0 18px;}
.xk-hero-sub{
  max-width:660px;font-size:clamp(16px,1.6vw,18px);
  color:var(--xk-text-dark-muted);margin:0 0 32px;
}
.xk-crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:9px;
  font-size:13px;color:var(--xk-text-dark-muted);margin-bottom:26px;
}
.xk-crumbs a{color:var(--xk-text-dark-muted);}
.xk-crumbs a:hover{color:var(--xk-cyan);}
.xk-crumbs .sep{opacity:.6;}
.xk-crumbs [aria-current]{color:var(--xk-text-dark);}

.xk-badges{display:flex;flex-wrap:wrap;gap:14px;margin:0 0 34px;padding:0;list-style:none;}
.xk-badge{
  display:flex;align-items:baseline;gap:10px;
  padding:14px 22px;border-radius:var(--xk-r-pill);
  background:rgba(23,18,53,.72);
  border:1px solid rgba(124,92,255,.35);
  box-shadow:0 8px 26px rgba(0,0,0,.35);
}
.xk-badge strong{
  font-size:clamp(22px,2.4vw,28px);font-weight:800;font-variant-numeric:tabular-nums;
  background:var(--xk-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.xk-badge span{font-size:13px;color:var(--xk-text-dark-muted);}
.xk-hero-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- Feature rows ---------- */
.xk-feature{
  display:grid;grid-template-columns:1fr 1fr;
  gap:64px;align-items:center;
  margin-bottom:96px;
}
.xk-feature:last-child{margin-bottom:0;}
.xk-feature-reverse .xk-feature-body{order:2;}
.xk-feature-reverse .xk-feature-media{order:1;}
.xk-feature-body h3{font-size:clamp(20px,2.2vw,24px);margin-bottom:14px;}
.xk-feature-body>p{color:var(--xk-text-muted);margin-bottom:0;}
.xk-feature-media{position:relative;}
.xk-feature-media img{
  width:100%;border-radius:var(--xk-r-md);
  border:1px solid var(--xk-border);
  box-shadow:var(--xk-shadow-card);
}
.xk-feature-media::after{
  content:"";position:absolute;inset:auto -14px -14px auto;
  width:120px;height:120px;border-radius:var(--xk-r-md);
  background:var(--xk-grad);opacity:.16;filter:blur(6px);z-index:-1;
}
.xk-feature-tag{
  display:inline-block;margin-bottom:14px;padding:6px 14px;
  border-radius:var(--xk-r-pill);font-size:13px;font-weight:600;
  color:var(--xk-primary);background:rgba(108,77,246,.09);
  border:1px solid rgba(108,77,246,.22);
}

.xk-list{list-style:none;margin:20px 0 0;padding:0;display:grid;gap:13px;}
.xk-list li{position:relative;padding-left:22px;line-height:1.8;color:var(--xk-text-muted);}
.xk-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;
  background:var(--xk-cyan);box-shadow:0 0 10px rgba(45,225,194,.6);
}
.xk-list-dark li{color:var(--xk-text-dark-muted);}
.xk-list li strong{color:var(--xk-text);font-weight:700;}
.xk-list-dark li strong{color:var(--xk-text-dark);}

/* ---------- Dark feature stats ---------- */
.xk-stats{margin-top:8px;}
.xk-stat{position:relative;padding:10px 26px 10px 26px;margin-bottom:36px;}
.xk-stat::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:1px;
  background:linear-gradient(180deg,rgba(124,92,255,.55),rgba(45,225,194,.35),transparent);
}
.xk-stat-index{
  display:block;font-size:28px;font-weight:800;font-variant-numeric:tabular-nums;
  background:var(--xk-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  margin-bottom:8px;
}
.xk-stat h3{font-size:19px;color:var(--xk-text-dark);margin-bottom:6px;}
.xk-stat p{font-size:14.5px;color:var(--xk-text-dark-muted);margin:0;line-height:1.8;}

/* ---------- Steps ---------- */
.xk-steps{
  list-style:none;margin:0;padding:0;
  display:grid;grid-template-columns:repeat(4,1fr);gap:28px;
  position:relative;
}
.xk-steps::before{
  content:"";position:absolute;left:6px;right:6px;top:23px;height:1px;z-index:1;
  background:linear-gradient(90deg,rgba(124,92,255,.65),rgba(45,225,194,.55),rgba(124,92,255,.2));
}
.xk-step{position:relative;z-index:2;padding-right:8px;}
.xk-step-num{
  display:inline-grid;place-items:center;
  width:48px;height:48px;border-radius:50%;
  background:#FFFFFF;border:1px solid var(--xk-border-strong);
  color:var(--xk-primary);font-weight:800;font-size:17px;
  font-variant-numeric:tabular-nums;
  box-shadow:0 0 0 6px rgba(246,244,255,1),0 8px 22px rgba(76,52,178,.16);
  margin-bottom:18px;
}
.xk-step h3{font-size:18px;margin-bottom:8px;}
.xk-step p{font-size:14.5px;color:var(--xk-text-muted);margin:0;}

/* ---------- FAQ ---------- */
.xk-faq{border-top:1px solid var(--xk-border);}
.xk-faq-item{border-bottom:1px solid var(--xk-border);}
.xk-faq-q{
  position:relative;width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 0 24px 18px;margin:0;
  background:none;border:0;text-align:left;
  font-size:18px;font-weight:700;color:var(--xk-text);line-height:1.6;
  cursor:pointer;
}
.xk-faq-q::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,#7C5CFF,#2DE1C2);
  opacity:0;transition:opacity .25s ease;
}
.xk-faq-item.is-open .xk-faq-q::before{opacity:1;}
.xk-faq-q:hover{color:var(--xk-primary);}
.xk-faq-icon{
  flex:0 0 auto;width:30px;height:30px;border-radius:50%;
  display:grid;place-items:center;font-size:15px;
  color:var(--xk-primary);background:rgba(108,77,246,.09);
  border:1px solid rgba(108,77,246,.22);
  transition:transform .3s ease,background .3s ease,color .3s ease;
}
.xk-faq-item.is-open .xk-faq-icon{transform:rotate(45deg);background:linear-gradient(135deg,#7C5CFF,#2DE1C2);color:#0B0920;border-color:transparent;}
.xk-faq-a{max-height:0;overflow:hidden;transition:max-height .38s ease;}
.xk-faq-a-inner{padding:0 40px 24px 18px;color:var(--xk-text-muted);line-height:1.85;font-size:15.5px;}

/* ---------- CTA + Form ---------- */
.xk-cta-band{background:linear-gradient(160deg,#0E0B22 0%,#1B1450 55%,#0E0B22 100%);}
.xk-cta-band .xk-section-head{margin-bottom:36px;}
.xk-form{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(124,92,255,.24);
  border-radius:var(--xk-r-lg);
  padding:34px;
  box-shadow:var(--xk-shadow-dark);
}
.xk-field{margin-bottom:20px;}
.xk-field label{display:block;font-size:14px;font-weight:600;color:var(--xk-text-dark);margin-bottom:9px;}
.xk-field input,.xk-field textarea{
  width:100%;padding:13px 16px;
  font-family:inherit;font-size:15px;color:var(--xk-text-dark);
  background:rgba(255,255,255,.05);
  border:1px solid rgba(124,92,255,.26);
  border-radius:var(--xk-r-sm);
  transition:border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
.xk-field textarea{min-height:118px;resize:vertical;}
.xk-field input::placeholder,.xk-field textarea::placeholder{color:rgba(237,235,255,.36);}
.xk-field input:focus,.xk-field textarea:focus{
  border-color:var(--xk-cyan);
  background:rgba(255,255,255,.07);
  box-shadow:0 0 0 3px rgba(45,225,194,.18);
  outline:2px solid rgba(45,225,194,.55);
  outline-offset:1px;
}
.xk-form-note{font-size:13px;color:var(--xk-text-dark-muted);margin:14px 0 0;}
.xk-form-tip{font-size:13.5px;color:var(--xk-amber);margin:14px 0 0;min-height:20px;}

/* ---------- Footer ---------- */
.xk-footer{
  position:relative;
  background:#0E0B22;color:var(--xk-text-dark-muted);
  padding:76px 0 32px;
}
.xk-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(124,92,255,.7),rgba(45,225,194,.55),transparent);
}
.xk-footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;}
.xk-footer h4{
  font-size:14px;font-weight:700;letter-spacing:.04em;margin-bottom:20px;
  background:linear-gradient(135deg,#C9BFFF,#2DE1C2);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.xk-footer ul{list-style:none;display:grid;gap:12px;}
.xk-footer ul a{font-size:14px;color:var(--xk-text-dark-muted);}
.xk-footer ul a:hover{color:var(--xk-cyan);}
.xk-footer-brand p{font-size:14px;line-height:1.9;margin:18px 0 0;max-width:340px;}
.xk-footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;}
.xk-footer-contact i{color:var(--xk-cyan);margin-top:5px;font-size:13px;}
.xk-footer-bottom{
  margin-top:56px;padding-top:24px;
  border-top:1px solid rgba(124,92,255,.18);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(168,163,204,.85);
}

/* ---------- Responsive ---------- */
@media screen and (max-width:1023px){
  :root{--xk-sec-y:76px;}
  .xk-burger{display:inline-flex;}
  .xk-nav{
    position:fixed;top:72px;left:0;right:0;bottom:0;
    flex-direction:column;align-items:stretch;gap:0;margin:0;
    padding:18px 20px 40px;
    background:rgba(14,11,34,.98);
    border-top:1px solid rgba(124,92,255,.28);
    overflow-y:auto;
    transform:translateY(-12px);opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .28s ease,transform .28s ease,visibility .28s ease;
  }
  .xk-nav.is-open{transform:translateY(0);opacity:1;visibility:visible;pointer-events:auto;}
  .xk-nav a{
    border-radius:0;padding:16px 18px;font-size:16px;
    border-bottom:1px solid rgba(124,92,255,.16);
  }
  .xk-nav a::after{display:none;}
  .xk-nav a.active{background:rgba(124,92,255,.12);box-shadow:inset 3px 0 0 0 #7C5CFF;}
  .xk-header.is-scrolled .xk-nav{top:60px;}
  .xk-footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .xk-feature{gap:40px;margin-bottom:72px;}
  .xk-steps{grid-template-columns:1fr 1fr;}
  .xk-steps::before{display:none;}
}
@media screen and (max-width:767px){
  .xk-feature{grid-template-columns:1fr;gap:28px;margin-bottom:64px;}
  .xk-feature-reverse .xk-feature-body{order:1;}
  .xk-feature-reverse .xk-feature-media{order:2;}
  .xk-stat{padding-left:20px;padding-right:8px;}
  .xk-faq-q{font-size:16.5px;padding-left:14px;}
  .xk-faq-a-inner{padding-left:14px;padding-right:8px;}
  .xk-form{padding:24px;}
}
@media screen and (max-width:639px){
  :root{--xk-sec-y:60px;}
  .grid-container{padding-left:18px;padding-right:18px;}
  .xk-container{padding:0 18px;}
  .xk-header-inner{padding:0 18px;gap:14px;}
  .xk-logo-text{font-size:16px;}
  .xk-page-hero{padding:64px 0 62px;}
  .xk-badges{gap:10px;}
  .xk-badge{padding:12px 18px;}
  .xk-hero-actions .xk-btn{width:100%;}
  .xk-section-head{margin-bottom:44px;}
  .xk-steps{grid-template-columns:1fr;gap:26px;}
  .xk-step-num{width:44px;height:44px;}
  .xk-footer{padding:56px 0 26px;}
  .xk-footer-grid{grid-template-columns:1fr;gap:32px;}
  .xk-footer-bottom{flex-direction:column;gap:8px;}
}

/* roulang page: category3 */
:root{
  --xk-purple:#6C4DF6;
  --xk-purple-2:#7C5CFF;
  --xk-cyan:#2DE1C2;
  --xk-amber:#FFB86B;
  --xk-dark:#0E0B22;
  --xk-dark-2:#171235;
  --xk-light:#F6F4FF;
  --xk-white:#FFFFFF;
  --xk-text:#191634;
  --xk-text-muted:#5A5578;
  --xk-text-inv:#EDEBFF;
  --xk-text-inv-muted:#A8A3CC;
  --xk-line:rgba(124,92,255,.18);
  --xk-line-strong:rgba(124,92,255,.45);
  --xk-grad:linear-gradient(135deg,#7C5CFF 0%,#2DE1C2 100%);
  --xk-grad-line:linear-gradient(90deg,rgba(124,92,255,0) 0%,rgba(124,92,255,.55) 38%,rgba(45,225,194,.55) 68%,rgba(45,225,194,0) 100%);
  --xk-radius-xl:24px;
  --xk-radius-md:16px;
  --xk-radius-sm:12px;
  --xk-radius-pill:999px;
  --xk-shadow-1:0 1px 2px rgba(20,14,60,.06),0 12px 32px -8px rgba(76,52,178,.18);
  --xk-shadow-2:0 16px 40px rgba(0,0,0,.45);
  --xk-glow:0 0 24px rgba(124,92,255,.45);
  --xk-header-h:72px;
  --xk-section-y:104px;
  --xk-font:"Inter","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;scroll-padding-top:100px;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--xk-font);
  font-size:16px;
  line-height:1.85;
  color:var(--xk-text);
  background:var(--xk-light);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--xk-purple);text-decoration:none;transition:color .25s ease,background-color .25s ease,opacity .25s ease}
a:hover{color:var(--xk-purple-2)}
h1,h2,h3,h4{margin:0 0 .55em;font-weight:800;line-height:1.32;color:inherit;letter-spacing:.2px}
h1{font-size:clamp(30px,4.6vw,46px)}
h2{font-size:clamp(24px,3vw,34px)}
h3{font-size:clamp(18px,2vw,21px)}
p{margin:0 0 1.1em}
ul,ol{margin:0 0 1.1em;padding-left:1.2em}
button,input,textarea,select{font-family:inherit;font-size:100%}
button{cursor:pointer}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:2px solid var(--xk-cyan);outline-offset:2px;border-radius:6px}
.xk-num{font-variant-numeric:tabular-nums}

/* ---------- Foundation 覆盖 ---------- */
.row{display:flex;flex-wrap:wrap}
.row::before,.row::after{display:none !important;content:none !important}
.column{float:none}
.xk-container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px}
.xk-container .row{max-width:none;margin-left:-12px;margin-right:-12px}
.xk-container .row .column{padding-left:12px;padding-right:12px;flex:0 0 auto}
.xk-section{padding:var(--xk-section-y) 0;position:relative}
.xk-section--light{background:var(--xk-light);color:var(--xk-text)}
.xk-section--white{background:#FFFFFF;color:var(--xk-text)}
.xk-section--dark{background:var(--xk-dark);color:var(--xk-text-inv)}
.xk-section--dark h2,.xk-section--dark h3{color:var(--xk-text-inv)}
.xk-section--dark p{color:var(--xk-text-inv-muted)}

.xk-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:var(--xk-radius-pill);
  font-size:13px;font-weight:700;letter-spacing:.4px;
  color:var(--xk-purple);background:rgba(124,92,255,.09);
  border:1px solid var(--xk-line);margin-bottom:18px;
}
.xk-section--dark .xk-eyebrow{color:var(--xk-cyan);background:rgba(45,225,194,.08);border-color:rgba(45,225,194,.28)}
.xk-section-head{max-width:760px;margin-bottom:48px}
.xk-section-head p{color:var(--xk-text-muted);margin-bottom:0}
.xk-section--dark .xk-section-head p{color:var(--xk-text-inv-muted)}

/* ---------- 按钮 ---------- */
.xk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 28px;border-radius:var(--xk-radius-pill);
  font-size:15px;font-weight:700;line-height:1;border:1px solid transparent;
  transition:transform .25s ease,box-shadow .25s ease,background .3s ease,color .25s ease,border-color .25s ease;
  white-space:nowrap;
}
.xk-btn i{font-size:14px}
.xk-btn-primary{background:var(--xk-grad);color:#0E0B22;box-shadow:0 10px 24px -12px rgba(124,92,255,.85)}
.xk-btn-primary:hover{color:#0E0B22;transform:translateY(-2px);box-shadow:var(--xk-glow)}
.xk-btn-outline{background:transparent;color:var(--xk-purple);border-color:var(--xk-line-strong)}
.xk-btn-outline:hover{background:var(--xk-grad);color:#0E0B22;border-color:transparent;transform:translateY(-2px);box-shadow:var(--xk-glow)}
.xk-btn-ghost{background:transparent;color:var(--xk-text-inv);border-color:var(--xk-line-strong)}
.xk-btn-ghost:hover{background:var(--xk-grad);color:#0E0B22;border-color:transparent;transform:translateY(-2px);box-shadow:var(--xk-glow)}
.xk-btn-sm{min-height:40px;padding:0 20px;font-size:14px}

/* ---------- 导航 ---------- */
.xk-header{
  position:sticky;top:0;z-index:80;
  background:#0E0B22;
  height:var(--xk-header-h);
  transition:height .3s ease,box-shadow .3s ease;
}
.xk-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--xk-grad);opacity:.9;
}
.xk-header.is-scrolled{height:60px;box-shadow:0 8px 24px rgba(0,0,0,.5)}
.xk-header-inner{
  max-width:1280px;margin:0 auto;height:100%;padding:0 32px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.xk-logo{display:inline-flex;align-items:center;gap:11px;flex:0 0 auto}
.xk-logo:hover{color:inherit}
.xk-logo-mark{
  width:34px;height:34px;border-radius:12px;flex:0 0 auto;
  background:var(--xk-grad);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px -6px rgba(124,92,255,.9);
}
.xk-logo-mark svg{width:20px;height:20px}
.xk-logo-text{font-size:17px;font-weight:800;color:var(--xk-text-inv);letter-spacing:.3px}
.xk-nav{display:flex;align-items:center;gap:6px}
.xk-nav a{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 14px;font-size:15px;font-weight:600;color:var(--xk-text-inv-muted);
  border-radius:10px;
}
.xk-nav a:hover{color:var(--xk-text-inv)}
.xk-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--xk-grad);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .28s ease;opacity:.9;
}
.xk-nav a:hover::after{transform:scaleX(1)}
.xk-nav a.active{
  color:transparent;
  background:var(--xk-grad);
  -webkit-background-clip:text;background-clip:text;
  text-shadow:none;
}
.xk-nav a.active::after{
  transform:scaleX(1);
  box-shadow:0 0 12px rgba(124,92,255,.75);
}
.xk-header-actions{display:flex;align-items:center;gap:14px}
.xk-burger{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(124,92,255,.12);border:1px solid var(--xk-line);
  color:var(--xk-text-inv);font-size:17px;align-items:center;justify-content:center;
}
.xk-burger:hover{background:rgba(124,92,255,.26)}

/* ---------- 页头横幅 ---------- */
.xk-pagehead{
  position:relative;overflow:hidden;
  padding:128px 0 64px;
  min-height:340px;
  display:flex;align-items:flex-end;
  color:var(--xk-text-inv);
  background-color:#0E0B22;
  background-image:linear-gradient(135deg,rgba(14,11,34,.94) 0%,rgba(28,23,64,.78) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.xk-pagehead::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:
    radial-gradient(1.4px 1.4px at 12% 24%,rgba(255,255,255,.75),transparent 60%),
    radial-gradient(1.2px 1.2px at 32% 68%,rgba(45,225,194,.7),transparent 60%),
    radial-gradient(1.6px 1.6px at 58% 30%,rgba(255,255,255,.6),transparent 60%),
    radial-gradient(1.2px 1.2px at 78% 62%,rgba(124,92,255,.85),transparent 60%),
    radial-gradient(1.4px 1.4px at 88% 18%,rgba(45,225,194,.6),transparent 60%);
}
.xk-pagehead .xk-container{position:relative;z-index:2}
.xk-pagehead h1{color:var(--xk-text-inv);margin-bottom:16px;max-width:900px}
.xk-pagehead .xk-lead{
  max-width:720px;color:var(--xk-text-inv-muted);font-size:17px;margin:0;
}
.xk-breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--xk-text-inv-muted);margin-bottom:18px;
}
.xk-breadcrumb a{color:var(--xk-text-inv-muted)}
.xk-breadcrumb a:hover{color:var(--xk-cyan)}
.xk-breadcrumb span.sep{opacity:.6}
.xk-breadcrumb .current{color:var(--xk-cyan)}

/* ---------- 数据徽章 ---------- */
.xk-stats{padding-top:0;border-top:1px solid rgba(124,92,255,.16)}
.xk-stat{
  height:100%;
  background:rgba(23,18,53,.74);
  border:1px solid var(--xk-line);
  border-radius:var(--xk-radius-md);
  padding:22px 20px;
  backdrop-filter:blur(6px);
  transition:border-color .28s ease,transform .28s ease;
}
.xk-stat:hover{border-color:rgba(45,225,194,.55);transform:translateY(-3px)}
.xk-stat-num{
  display:block;font-size:30px;font-weight:800;line-height:1.15;
  background:var(--xk-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  font-variant-numeric:tabular-nums;
}
.xk-stat-label{display:block;font-size:13px;font-weight:700;color:var(--xk-text-inv);margin-top:2px}
.xk-stat p{font-size:13px;line-height:1.7;color:var(--xk-text-inv-muted);margin:10px 0 0}

/* ---------- 长文分节 ---------- */
.xk-anchor{
  position:sticky;top:100px;
  background:#FFFFFF;
  border:1px solid var(--xk-line);
  border-radius:var(--xk-radius-xl);
  padding:22px 18px;
  box-shadow:var(--xk-shadow-1);
}
.xk-anchor h2{font-size:15px;font-weight:800;color:var(--xk-text);margin:0 0 12px;padding:0 10px}
.xk-anchor a{
  position:relative;display:block;padding:11px 12px;border-radius:10px;
  font-size:14px;color:var(--xk-text-muted);line-height:1.5;
}
.xk-anchor a:hover{color:var(--xk-text);background:rgba(124,92,255,.07)}
.xk-anchor a.is-current{color:var(--xk-purple);font-weight:700;background:rgba(124,92,255,.09)}
.xk-anchor a.is-current::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;
  background:var(--xk-grad);border-radius:2px;
}
.xk-anchor-foot{
  margin-top:14px;padding:14px 12px 4px;border-top:1px solid var(--xk-line);
  font-size:13px;color:var(--xk-text-muted);line-height:1.7;
}
.xk-reader{display:flex;flex-direction:column;gap:24px}
.xk-block{
  background:#FFFFFF;
  border:1px solid var(--xk-line);
  border-radius:var(--xk-radius-xl);
  padding:34px 34px 28px;
  box-shadow:var(--xk-shadow-1);
  transition:border-color .28s ease;
}
.xk-block:hover{border-color:rgba(45,225,194,.5)}
.xk-block h2{display:flex;align-items:flex-start;gap:14px;margin-bottom:16px}
.xk-block h2 .xk-stepnum{
  flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:12px;margin-top:3px;
  background:rgba(124,92,255,.1);color:var(--xk-purple);
  font-size:15px;font-weight:800;font-variant-numeric:tabular-nums;
}
.xk-block p{color:var(--xk-text-muted);margin-bottom:14px}
.xk-points{list-style:none;margin:6px 0 0;padding:0}
.xk-points li{
  position:relative;padding-left:22px;margin-bottom:12px;
  color:var(--xk-text-muted);line-height:1.8;
}
.xk-points li:last-child{margin-bottom:0}
.xk-points li::before{
  content:"";position:absolute;left:0;top:12px;width:8px;height:8px;border-radius:50%;
  background:var(--xk-cyan);box-shadow:0 0 8px rgba(45,225,194,.7);
}
.xk-figure{margin:22px 0 6px}
.xk-figure img{border-radius:var(--xk-radius-md);width:100%;object-fit:cover;border:1px solid var(--xk-line)}
.xk-figure figcaption{font-size:13px;color:var(--xk-text-muted);margin-top:10px;line-height:1.7}
.xk-note{
  margin-top:20px;padding:16px 18px;border-radius:var(--xk-radius-sm);
  background:rgba(124,92,255,.06);border-left:3px solid transparent;
  border-image:var(--xk-grad) 1;
  font-size:14px;color:var(--xk-text-muted);line-height:1.8;
}

/* ---------- 自查清单 ---------- */
.xk-check-row{margin-top:-8px}
.xk-check{
  display:flex;gap:12px;align-items:flex-start;height:100%;
  background:rgba(255,255,255,.035);
  border:1px solid var(--xk-line);
  border-radius:var(--xk-radius-md);
  padding:18px;margin-top:16px;
  transition:border-color .28s ease,transform .28s ease,background .28s ease;
}
.xk-check:hover{border-color:rgba(45,225,194,.55);background:rgba(45,225,194,.05);transform:translateY(-3px)}
.xk-check i{color:var(--xk-cyan);font-size:17px;margin-top:3px;flex:0 0 auto}
.xk-check h3{font-size:16px;font-weight:700;margin:0 0 4px;color:var(--xk-text-inv)}
.xk-check p{font-size:13.5px;line-height:1.75;color:var(--xk-text-inv-muted);margin:0}
.xk-compare{
  margin-top:32px;border:1px solid var(--xk-line);border-radius:var(--xk-radius-xl);
  overflow:hidden;background:rgba(23,18,53,.6);
}
.xk-compare table{width:100%;border-collapse:collapse;margin:0}
.xk-compare th,.xk-compare td{
  padding:16px 20px;text-align:left;font-size:14.5px;
  border-bottom:1px solid var(--xk-line);color:var(--xk-text-inv-muted);line-height:1.7;
}
.xk-compare th{font-size:13px;font-weight:700;letter-spacing:.5px;color:var(--xk-cyan);background:rgba(124,92,255,.08)}
.xk-compare tr:last-child td{border-bottom:none}
.xk-compare td:first-child{color:var(--xk-text-inv);font-weight:600}

/* ---------- FAQ ---------- */
.xk-faq-item{
  background:#FFFFFF;border:1px solid var(--xk-line);
  border-radius:var(--xk-radius-md);margin-bottom:16px;overflow:hidden;
  transition:border-color .28s ease,box-shadow .28s ease;
}
.xk-faq-item[open]{border-color:var(--xk-line-strong);box-shadow:var(--xk-shadow-1)}
.xk-faq-q{
  position:relative;display:block;list-style:none;cursor:pointer;
  padding:20px 58px 20px 22px;font-size:18px;font-weight:700;color:var(--xk-text);
  transition:color .25s ease;
}
.xk-faq-q::-webkit-details-marker{display:none}
.xk-faq-q h3{display:inline;font-size:18px;font-weight:700;margin:0;color:inherit}
.xk-faq-item:hover .xk-faq-q{color:var(--xk-purple)}
.xk-faq-q::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--xk-purple);
  transition:transform .3s ease;
}
.xk-faq-item[open] .xk-faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--xk-grad);border-radius:0 2px 2px 0;
}
.xk-faq-item[open] .xk-faq-q::after{transform:translateY(-50%) rotate(45deg)}
.xk-faq-a{padding:0 24px 22px;color:var(--xk-text-muted);line-height:1.85;font-size:15px}
.xk-faq-a p:last-child{margin-bottom:0}

/* ---------- CTA 与表单 ---------- */
.xk-cta{
  border-radius:var(--xk-radius-xl);
  padding:44px 40px;
  background:linear-gradient(135deg,rgba(124,92,255,.22) 0%,rgba(45,225,194,.16) 100%);
  border:1px solid var(--xk-line-strong);
  position:relative;overflow:hidden;
}
.xk-cta::after{
  content:"";position:absolute;right:-80px;top:-80px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(45,225,194,.28) 0%,rgba(45,225,194,0) 70%);
}
.xk-cta h2{color:var(--xk-text-inv);position:relative;z-index:2}
.xk-cta p{color:var(--xk-text-inv-muted);position:relative;z-index:2;margin-bottom:24px}
.xk-cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:2}
.xk-form-card{
  background:rgba(23,18,53,.85);
  border:1px solid var(--xk-line);
  border-radius:var(--xk-radius-xl);
  padding:32px 30px;
  box-shadow:var(--xk-shadow-2);
}
.xk-form-card h3{color:var(--xk-text-inv);margin-bottom:6px}
.xk-form-card .xk-form-intro{font-size:14px;color:var(--xk-text-inv-muted);margin-bottom:22px}
.xk-field{margin-bottom:18px}
.xk-field label{display:block;font-size:13px;font-weight:700;color:var(--xk-text-inv-muted);margin-bottom:8px}
.xk-field input,.xk-field textarea{
  width:100%;min-height:48px;padding:13px 16px;
  background:rgba(255,255,255,.045);
  border:1px solid var(--xk-line);
  border-radius:var(--xk-radius-sm);
  color:var(--xk-text-inv);font-size:15px;line-height:1.6;
  transition:border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
.xk-field textarea{min-height:120px;resize:vertical}
.xk-field input::placeholder,.xk-field textarea::placeholder{color:rgba(168,163,204,.75)}
.xk-field input:focus,.xk-field textarea:focus{
  outline:none;border-color:var(--xk-cyan);background:rgba(255,255,255,.07);
  box-shadow:0 0 0 3px rgba(45,225,194,.18);
}
.xk-form-hint{font-size:12.5px;color:var(--xk-amber);margin:10px 0 0;line-height:1.7}
.xk-form-tip{
  display:none;margin-top:14px;padding:12px 16px;border-radius:var(--xk-radius-sm);
  background:rgba(45,225,194,.1);border:1px solid rgba(45,225,194,.35);
  font-size:13.5px;color:var(--xk-cyan);
}

/* ---------- 页脚 ---------- */
.xk-footer{
  position:relative;background:var(--xk-dark);
  padding:76px 0 28px;color:var(--xk-text-inv-muted);
}
.xk-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:var(--xk-grad-line);
}
.xk-footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.3fr;gap:40px}
.xk-footer .xk-logo{margin-bottom:16px}
.xk-footer-brand p{font-size:14px;line-height:1.85;color:var(--xk-text-inv-muted);margin:0;max-width:320px}
.xk-footer h4{
  font-size:14px;font-weight:700;margin:0 0 16px;
  background:var(--xk-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  display:inline-block;
}
.xk-footer ul{list-style:none;margin:0;padding:0}
.xk-footer li{margin-bottom:11px}
.xk-footer li:last-child{margin-bottom:0}
.xk-footer a{font-size:14px;color:var(--xk-text-inv-muted)}
.xk-footer a:hover{color:var(--xk-cyan)}
.xk-footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;line-height:1.7}
.xk-footer-contact i{color:var(--xk-cyan);margin-top:5px;flex:0 0 auto}
.xk-footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:52px;padding-top:22px;border-top:1px solid var(--xk-line);
  font-size:13px;color:var(--xk-text-inv-muted);
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  :root{--xk-section-y:64px}
  .xk-header{height:64px}
  .xk-header-inner{padding:0 20px}
  .xk-container{padding:0 20px}
  .xk-burger{display:inline-flex}
  .xk-header-actions .xk-btn-sm{display:none}
  .xk-nav{
    position:fixed;top:64px;left:0;right:0;z-index:79;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    background:#0E0B22;padding:8px 20px 24px;
    max-height:calc(100vh - 64px);overflow-y:auto;
    box-shadow:0 24px 48px rgba(0,0,0,.6);
    border-top:1px solid var(--xk-line);
  }
  .xk-nav.open{display:flex}
  .xk-nav a{
    padding:16px 14px;font-size:16px;border-bottom:1px solid var(--xk-line);
    border-radius:0;width:100%;
  }
  .xk-nav a::after{display:none}
  .xk-nav a.active{background:var(--xk-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
  .xk-nav a.active::before{
    content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
    background:var(--xk-grad);border-radius:0 2px 2px 0;
  }
  .xk-pagehead{padding:104px 0 52px;min-height:300px}
  .xk-anchor{position:static;margin-bottom:24px}
  .xk-block{padding:26px 22px 22px}
  .xk-cta{padding:32px 24px}
  .xk-form-card{padding:26px 22px;margin-top:28px}
  .xk-footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .xk-footer-brand{grid-column:1 / -1}
}
@media (max-width:639px){
  :root{--xk-section-y:56px}
  body{font-size:15.5px}
  h1{font-size:30px}
  .xk-container{padding:0 18px}
  .xk-container .row{margin-left:-8px;margin-right:-8px}
  .xk-container .row .column{padding-left:8px;padding-right:8px}
  .xk-section-head{margin-bottom:30px}
  .xk-pagehead{padding:96px 0 44px;min-height:280px}
  .xk-pagehead .xk-lead{font-size:15.5px}
  .xk-stat-num{font-size:26px}
  .xk-faq-q{font-size:16.5px;padding:18px 50px 18px 18px}
  .xk-faq-q h3{font-size:16.5px}
  .xk-faq-a{padding:0 18px 20px;font-size:14.5px}
  .xk-footer{padding:56px 0 24px}
  .xk-footer-grid{grid-template-columns:1fr;gap:28px}
  .xk-footer-bottom{flex-direction:column;margin-top:36px}
  .xk-compare th,.xk-compare td{padding:12px 14px;font-size:13.5px}
  .xk-cta-actions .xk-btn{width:100%}
}

/* roulang page: category4 */
:root{
  --xk-primary:#6C4DF6;
  --xk-violet:#7C5CFF;
  --xk-cyan:#2DE1C2;
  --xk-amber:#FFB86B;
  --xk-dark:#0E0B22;
  --xk-dark-2:#171235;
  --xk-dark-3:#0B0920;
  --xk-light:#F6F4FF;
  --xk-card:#FFFFFF;
  --xk-text-on-dark:#EDEBFF;
  --xk-text-on-dark-mute:#A8A3CC;
  --xk-text:#191634;
  --xk-text-mute:#5A5578;
  --xk-border:rgba(124,92,255,.18);
  --xk-border-strong:rgba(124,92,255,.34);
  --xk-grad:linear-gradient(135deg,#7C5CFF 0%,#2DE1C2 100%);
  --xk-glow:0 0 24px rgba(124,92,255,.45);
  --xk-shadow-card:0 1px 2px rgba(20,14,60,.06),0 12px 32px -8px rgba(76,52,178,.18);
  --xk-shadow-dark:0 16px 40px rgba(0,0,0,.45);
  --xk-r-lg:24px;
  --xk-r-md:16px;
  --xk-r-sm:12px;
  --xk-r-pill:999px;
  --xk-container:1200px;
  --xk-section-y:112px;
  --xk-section-y-m:60px;
  --xk-t:.28s cubic-bezier(.4,0,.2,1);
}

/* ===== base ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--xk-text);
  background:var(--xk-dark);
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--xk-primary);text-decoration:none;transition:color var(--xk-t),border-color var(--xk-t),background var(--xk-t)}
a:hover{color:var(--xk-violet)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--xk-cyan);outline-offset:3px}
body.xk-no-scroll{overflow:hidden}

.xk-container{width:100%;max-width:var(--xk-container);margin:0 auto;padding:0 24px}
.xk-section{padding:var(--xk-section-y) 0;position:relative}
.xk-section-light{background:var(--xk-light);color:var(--xk-text)}
.xk-section-dark{background:var(--xk-dark);color:var(--xk-text-on-dark)}
.xk-section-dark-alt{background:var(--xk-dark-2);color:var(--xk-text-on-dark)}
.xk-tight-top{padding-top:0}

.xk-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.06em;
  color:var(--xk-primary);margin-bottom:16px;
}
.xk-section-dark .xk-eyebrow,.xk-section-dark-alt .xk-eyebrow{color:var(--xk-cyan)}
.xk-eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--xk-grad)}

.xk-h2{font-size:clamp(24px,3.1vw,34px);font-weight:800;line-height:1.32;letter-spacing:.2px}
.xk-section-dark .xk-h2,.xk-section-dark-alt .xk-h2{color:#FFFFFF}
.xk-lead{margin-top:18px;font-size:17px;line-height:1.9;color:var(--xk-text-mute);max-width:820px}
.xk-section-dark .xk-lead,.xk-section-dark-alt .xk-lead{color:var(--xk-text-on-dark-mute)}

/* ===== buttons ===== */
.xk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:48px;padding:0 28px;border-radius:var(--xk-r-pill);
  font-size:15px;font-weight:700;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--xk-t),box-shadow var(--xk-t),background var(--xk-t),color var(--xk-t),border-color var(--xk-t);
}
.xk-btn-primary{background:var(--xk-grad);color:#0B0920;box-shadow:0 8px 22px -8px rgba(124,92,255,.65)}
.xk-btn-primary:hover{color:#0B0920;transform:translateY(-2px);box-shadow:var(--xk-glow)}
.xk-btn-outline{background:transparent;border-color:rgba(124,92,255,.5);color:var(--xk-primary)}
.xk-btn-outline:hover{background:var(--xk-grad);color:#0B0920;transform:translateY(-2px);box-shadow:var(--xk-glow);border-color:transparent}
.xk-section-dark .xk-btn-outline,.xk-section-dark-alt .xk-btn-outline{color:var(--xk-text-on-dark);border-color:rgba(124,92,255,.55)}
.xk-section-dark .xk-btn-outline:hover,.xk-section-dark-alt .xk-btn-outline:hover{color:#0B0920}
.xk-btn-sm{min-height:42px;padding:0 20px;font-size:14px}
.xk-btn-row{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:32px}

/* ===== header ===== */
.xk-header{
  position:sticky;top:0;z-index:90;
  background:#0E0B22;
  transition:box-shadow var(--xk-t);
}
.xk-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,#7C5CFF,#2DE1C2);
}
.xk-header.is-scrolled{box-shadow:0 8px 24px rgba(0,0,0,.5)}
.xk-header-inner{
  max-width:var(--xk-container);margin:0 auto;padding:0 24px;height:72px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  transition:height var(--xk-t);
}
.xk-header.is-scrolled .xk-header-inner{height:60px}
.xk-logo{display:inline-flex;align-items:center;gap:10px;color:#EDEBFF;font-weight:800;font-size:17px;letter-spacing:.2px}
.xk-logo:hover{color:#FFFFFF}
.xk-logo-mark{
  width:34px;height:34px;border-radius:10px;background:var(--xk-grad);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 34px;
}
.xk-logo-mark svg{width:20px;height:20px}
.xk-logo-text{white-space:nowrap}

.xk-nav{display:flex;align-items:center;gap:4px}
.xk-nav a{
  position:relative;padding:10px 14px;border-radius:var(--xk-r-pill);
  font-size:15px;color:var(--xk-text-on-dark-mute);
}
.xk-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;
  background:var(--xk-grad);opacity:0;transition:opacity var(--xk-t),box-shadow var(--xk-t);
}
.xk-nav a:hover{color:#EDEBFF}
.xk-nav a:hover::after{opacity:.78}
.xk-nav a.active{color:#FFFFFF;font-weight:700}
.xk-nav a.active::after{opacity:1;box-shadow:0 0 12px rgba(124,92,255,.6)}

.xk-header-actions{display:flex;align-items:center;gap:12px}
.xk-burger{
  display:none;width:44px;height:44px;border-radius:var(--xk-r-sm);
  border:1px solid rgba(124,92,255,.35);background:rgba(23,18,53,.9);
  color:#EDEBFF;font-size:18px;cursor:pointer;align-items:center;justify-content:center;
  transition:border-color var(--xk-t),color var(--xk-t);
}
.xk-burger:hover{border-color:var(--xk-cyan);color:var(--xk-cyan)}

/* ===== banner ===== */
.xk-banner{
  position:relative;overflow:hidden;
  padding:64px 0 72px;
  background-color:#0E0B22;
  background-image:
    linear-gradient(135deg,rgba(14,11,34,.94),rgba(28,23,64,.76)),
    url('/assets/images/backpic/back-1.png');
  background-size:cover,cover;
  background-position:center,center;
  color:var(--xk-text-on-dark);
}
.xk-banner::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.75;
  background-image:
    radial-gradient(circle at 8% 22%,rgba(255,255,255,.55) 0 1px,transparent 1.6px),
    radial-gradient(circle at 24% 68%,rgba(255,255,255,.4) 0 1px,transparent 1.6px),
    radial-gradient(circle at 42% 16%,rgba(45,225,194,.55) 0 1px,transparent 1.7px),
    radial-gradient(circle at 63% 54%,rgba(255,255,255,.45) 0 1px,transparent 1.6px),
    radial-gradient(circle at 78% 26%,rgba(124,92,255,.7) 0 1.2px,transparent 1.9px),
    radial-gradient(circle at 92% 72%,rgba(255,255,255,.4) 0 1px,transparent 1.6px),
    radial-gradient(circle at 52% 88%,rgba(255,184,107,.45) 0 1px,transparent 1.6px);
}
.xk-banner .xk-container{position:relative;z-index:2}
.xk-crumb{font-size:13px;color:var(--xk-text-on-dark-mute);display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.xk-crumb a{color:var(--xk-text-on-dark-mute)}
.xk-crumb a:hover{color:#FFFFFF}
.xk-crumb .sep{color:rgba(168,163,204,.6)}
.xk-crumb .current{color:#EDEBFF}
.xk-banner h1{
  margin-top:22px;max-width:900px;
  font-size:clamp(30px,4.4vw,48px);font-weight:800;line-height:1.22;letter-spacing:.2px;color:#FFFFFF;
}
.xk-banner-sub{margin-top:20px;max-width:760px;font-size:17px;line-height:1.9;color:var(--xk-text-on-dark-mute)}
.xk-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.xk-badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:10px 20px;border-radius:var(--xk-r-pill);
  background:rgba(23,18,53,.72);border:1px solid rgba(124,92,255,.3);
  font-size:13px;color:var(--xk-text-on-dark-mute);
}
.xk-badge b{
  font-size:16px;font-weight:800;font-variant-numeric:tabular-nums;
  background:var(--xk-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}

/* ===== intro points ===== */
.xk-points{margin-top:40px;display:flex;flex-direction:column;gap:18px;max-width:900px}
.xk-point{
  display:flex;gap:20px;padding:24px 28px;
  background:var(--xk-card);border:1px solid var(--xk-border);border-radius:var(--xk-r-md);
  box-shadow:var(--xk-shadow-card);
  transition:transform var(--xk-t),border-color var(--xk-t),box-shadow var(--xk-t);
}
.xk-point:hover{transform:translateY(-4px);border-color:rgba(45,225,194,.7)}
.xk-point-icon{
  flex:0 0 46px;width:46px;height:46px;border-radius:var(--xk-r-sm);
  background:rgba(108,77,246,.1);color:var(--xk-primary);
  display:flex;align-items:center;justify-content:center;font-size:18px;
}
.xk-point h3{font-size:19px;font-weight:700;color:var(--xk-text);margin-bottom:8px}
.xk-point p{font-size:15.5px;color:var(--xk-text-mute);line-height:1.85}

.xk-figure{margin:44px 0 0;max-width:880px}
.xk-figure img{width:100%;border-radius:var(--xk-r-md);border:1px solid var(--xk-border);box-shadow:var(--xk-shadow-card)}
.xk-figure figcaption{margin-top:12px;font-size:13px;color:var(--xk-text-mute);text-align:center}

/* ===== steps / timeline ===== */
.xk-steps{margin-top:52px;max-width:900px;display:flex;flex-direction:column}
.xk-step{position:relative;display:flex;gap:28px;padding-bottom:44px}
.xk-step:last-child{padding-bottom:0}
.xk-step:not(:last-child)::before{
  content:"";position:absolute;left:27px;top:58px;bottom:6px;width:1px;
  background:linear-gradient(180deg,rgba(124,92,255,.6),rgba(45,225,194,.28),transparent);
}
.xk-step-num{
  position:relative;z-index:2;flex:0 0 56px;width:56px;height:56px;border-radius:var(--xk-r-pill);
  background:#171235;border:1px solid rgba(124,92,255,.45);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:18px;
  transition:border-color var(--xk-t),box-shadow var(--xk-t),transform var(--xk-t);
}
.xk-step-num span{
  background:var(--xk-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  font-variant-numeric:tabular-nums;
}
.xk-step:hover .xk-step-num{border-color:rgba(45,225,194,.65);box-shadow:0 0 18px rgba(124,92,255,.4);transform:translateY(-2px)}
.xk-step-body{padding-top:6px}
.xk-step-body h3{font-size:20px;font-weight:700;color:#FFFFFF;margin-bottom:10px}
.xk-step-body p{font-size:15.5px;color:var(--xk-text-on-dark-mute);line-height:1.85;max-width:720px}

/* ===== checklist ===== */
.xk-checklist{margin-top:42px;display:flex;flex-direction:column;gap:16px;max-width:900px}
.xk-check-item{
  display:flex;gap:20px;padding:22px 26px;
  background:var(--xk-card);border:1px solid var(--xk-border);border-radius:var(--xk-r-md);
  box-shadow:var(--xk-shadow-card);
  transition:transform var(--xk-t),border-color var(--xk-t);
}
.xk-check-item:hover{transform:translateY(-4px);border-color:rgba(45,225,194,.7)}
.xk-check-icon{
  flex:0 0 42px;width:42px;height:42px;border-radius:var(--xk-r-sm);
  background:rgba(45,225,194,.12);color:#1AA98F;
  display:flex;align-items:center;justify-content:center;font-size:17px;
}
.xk-check-item h3{font-size:17px;font-weight:700;color:var(--xk-text);margin-bottom:6px}
.xk-check-item p{font-size:15px;color:var(--xk-text-mute);line-height:1.82}

/* ===== FAQ ===== */
.xk-faq{margin-top:44px;max-width:900px}
.xk-faq details{
  border:1px solid rgba(124,92,255,.22);border-radius:var(--xk-r-md);
  background:rgba(23,18,53,.74);margin-bottom:14px;overflow:hidden;
  transition:border-color var(--xk-t),box-shadow var(--xk-t);
}
.xk-faq details:hover{border-color:rgba(124,92,255,.45)}
.xk-faq details[open]{border-color:rgba(45,225,194,.45);box-shadow:var(--xk-shadow-dark)}
.xk-faq summary{
  position:relative;list-style:none;cursor:pointer;
  padding:20px 62px 20px 24px;
  font-size:18px;font-weight:700;color:#EDEBFF;line-height:1.6;
}
.xk-faq summary::-webkit-details-marker{display:none}
.xk-faq summary::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:3px;
  background:var(--xk-grad);opacity:0;transition:opacity var(--xk-t);
}
.xk-faq details[open] summary::before{opacity:1}
.xk-faq summary::after{
  content:"+";position:absolute;right:24px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:700;color:var(--xk-cyan);line-height:1;
  transition:transform var(--xk-t),color var(--xk-t);
}
.xk-faq details[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg)}
.xk-faq-body{padding:0 24px 22px;font-size:15.5px;color:var(--xk-text-on-dark-mute);line-height:1.85}

/* ===== CTA ===== */
.xk-cta-wrap{padding-bottom:var(--xk-section-y)}
.xk-cta{
  position:relative;overflow:hidden;border-radius:var(--xk-r-lg);
  padding:64px 48px;text-align:center;
  background:linear-gradient(135deg,rgba(124,92,255,.24),rgba(45,225,194,.14)),#141033;
  border:1px solid rgba(124,92,255,.32);
}
.xk-cta::before{
  content:"";position:absolute;inset:-40% -10% auto -10%;height:220px;pointer-events:none;
  background:radial-gradient(closest-side,rgba(124,92,255,.45),transparent 72%);
  opacity:.7;
}
.xk-cta > *{position:relative;z-index:2}
.xk-cta h2{font-size:clamp(24px,3vw,32px);font-weight:800;color:#FFFFFF;line-height:1.34}
.xk-cta p{margin:18px auto 0;max-width:680px;font-size:16px;color:var(--xk-text-on-dark-mute);line-height:1.9}
.xk-cta-meta{
  margin-top:26px;font-size:13px;color:var(--xk-text-on-dark-mute);
  display:flex;flex-wrap:wrap;justify-content:center;gap:10px 22px;
}
.xk-cta-meta span{display:inline-flex;align-items:center;gap:8px}
.xk-cta-meta i{color:var(--xk-cyan)}

/* ===== footer ===== */
.xk-footer{position:relative;background:var(--xk-dark-3);color:var(--xk-text-on-dark-mute);padding:72px 0 32px}
.xk-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(124,92,255,.65),rgba(45,225,194,.5),transparent);
}
.xk-footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.3fr;gap:44px}
.xk-footer .xk-logo{font-size:16px}
.xk-footer-brand p{margin-top:18px;font-size:14.5px;line-height:1.85;color:var(--xk-text-on-dark-mute);max-width:340px}
.xk-footer h4{
  font-size:14px;font-weight:700;margin-bottom:18px;letter-spacing:.02em;
  background:linear-gradient(135deg,#7C5CFF,#2DE1C2);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  display:inline-block;
}
.xk-footer ul{margin:0;padding:0}
.xk-footer li{margin-bottom:12px}
.xk-footer li a{font-size:14.5px;color:var(--xk-text-on-dark-mute)}
.xk-footer li a:hover{color:#EDEBFF}
.xk-footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px}
.xk-footer-contact i{color:var(--xk-cyan);margin-top:5px}
.xk-footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(124,92,255,.18);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;
  color:rgba(168,163,204,.85);
}

/* ===== responsive ===== */
@media (max-width:1023px){
  :root{--xk-section-y:72px}
  .xk-burger{display:inline-flex}
  .xk-nav{
    position:fixed;top:72px;left:0;right:0;z-index:88;
    flex-direction:column;align-items:stretch;gap:0;
    background:#0E0B22;padding:10px 18px 26px;
    border-bottom:1px solid rgba(124,92,255,.28);
    box-shadow:0 24px 40px rgba(0,0,0,.6);
    transform:translateY(-130%);
    transition:transform .34s cubic-bezier(.4,0,.2,1);
    max-height:calc(100vh - 72px);overflow-y:auto;
  }
  .xk-header.is-scrolled .xk-nav{top:60px}
  .xk-nav.is-open{transform:translateY(0)}
  .xk-nav a{
    padding:16px 16px;border-radius:0;font-size:16px;
    border-bottom:1px solid rgba(124,92,255,.16);
  }
  .xk-nav a::after{display:none}
  .xk-nav a.active::before{
    content:"";position:absolute;left:0;top:13px;bottom:13px;width:3px;border-radius:3px;
    background:var(--xk-grad);box-shadow:0 0 12px rgba(124,92,255,.6);
  }
  .xk-footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .xk-footer-brand{grid-column:1 / -1}
}
@media (max-width:767px){
  .xk-container{padding:0 18px}
  .xk-header-inner{padding:0 18px;height:66px}
  .xk-header.is-scrolled .xk-header-inner{height:58px}
  .xk-nav{top:66px}
  .xk-header.is-scrolled .xk-nav{top:58px}
  .xk-banner{padding:44px 0 56px}
  .xk-banner h1{font-size:clamp(28px,7vw,34px)}
  .xk-banner-sub{font-size:16px}
  .xk-badges{gap:10px;margin-top:26px}
  .xk-badge{padding:9px 16px}
  .xk-point,.xk-check-item{padding:20px;gap:16px;border-radius:var(--xk-r-md)}
  .xk-step{gap:18px;padding-bottom:34px}
  .xk-step-num{flex:0 0 46px;width:46px;height:46px;font-size:16px}
  .xk-step:not(:last-child)::before{left:22px;top:48px}
  .xk-step-body h3{font-size:18px}
  .xk-faq summary{font-size:16.5px;padding:18px 54px 18px 20px}
  .xk-faq-body{padding:0 20px 20px;font-size:15px}
  .xk-cta{padding:44px 22px}
  .xk-btn{width:100%;max-width:340px}
  .xk-btn-row .xk-btn{margin:0 auto}
  .xk-footer{padding:56px 0 28px}
  .xk-footer-grid{grid-template-columns:1fr;gap:32px}
  .xk-footer-bottom{flex-direction:column;margin-top:40px}
}
@media (max-width:520px){
  .xk-header-actions .xk-btn{display:none}
  .xk-logo-text{font-size:15.5px}
  .xk-point-icon,.xk-check-icon{flex:0 0 38px;width:38px;height:38px;font-size:16px}
  .xk-figure img{border-radius:var(--xk-r-sm)}
}