/* roulang page: index */
:root{
  --xk-bg:#0A0E12;
  --xk-bg-2:#10161D;
  --xk-surface:#151D26;
  --xk-surface-hover:#1C2630;
  --xk-line:rgba(255,255,255,.08);
  --xk-line-strong:rgba(255,255,255,.16);
  --xk-text-1:#EEF3F7;
  --xk-text-2:#A7B4C0;
  --xk-text-3:#6C7A88;
  --xk-primary:#12B39B;
  --xk-primary-hover:#0E907E;
  --xk-primary-soft:rgba(18,179,155,.12);
  --xk-accent:#F0A93C;
  --xk-alert:#E4572E;
  --xk-inverse-bg:#F2F5F6;
  --xk-inverse-text:#0A0E12;
  --xk-radius-card:16px;
  --xk-radius-btn:10px;
  --xk-radius-input:12px;
  --xk-radius-pill:999px;
  --xk-shadow-1:0 1px 2px rgba(0,0,0,.30);
  --xk-shadow-2:0 18px 40px -18px rgba(0,0,0,.65);
  --xk-dur:.26s;
  --xk-ease:cubic-bezier(.2,.7,.2,1);
  --xk-font:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --xk-font-num:"Barlow Condensed","Oswald","Arial Narrow",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--xk-bg);color:var(--xk-text-1);
  font-family:var(--xk-font);font-size:17px;line-height:1.85;font-weight:400;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,h5{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.2}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--xk-primary);outline-offset:2px;border-radius:6px}
.xk-skip{position:absolute;left:-9999px;top:0;background:var(--xk-primary);color:#05201c;padding:10px 18px;border-radius:0 0 10px 0;z-index:200}
.xk-skip:focus{left:0}

/* 容器 */
.xk-container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1400px){.xk-container{max-width:1280px}}

/* 按钮 */
.xk-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--xk-radius-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;transition:background-color var(--xk-dur) var(--xk-ease),border-color var(--xk-dur) var(--xk-ease),transform var(--xk-dur) var(--xk-ease),color var(--xk-dur) var(--xk-ease);
  min-height:44px;white-space:nowrap}
.xk-btn-primary{background:var(--xk-primary);color:#04231f}
.xk-btn-primary:hover{background:var(--xk-primary-hover);color:#04231f;transform:translateY(-1px)}
.xk-btn-ghost{background:transparent;border-color:var(--xk-line-strong);color:var(--xk-text-1)}
.xk-btn-ghost:hover{border-color:var(--xk-primary);color:var(--xk-primary);transform:translateY(-1px)}
.xk-btn-sm{padding:9px 18px;font-size:14px;min-height:40px}
.xk-link{color:var(--xk-primary);font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:6px;position:relative}
.xk-link::after{content:"";position:absolute;left:0;right:14px;bottom:-3px;height:1px;background:var(--xk-primary);transform:scaleX(0);transform-origin:left;transition:transform .2s var(--xk-ease)}
.xk-link:hover::after{transform:scaleX(1)}

/* 标签与徽章 */
.xk-tag{display:inline-flex;align-items:center;padding:3px 11px;border-radius:var(--xk-radius-pill);
  font-size:13px;letter-spacing:.04em;background:var(--xk-primary-soft);color:var(--xk-primary);border:1px solid rgba(18,179,155,.24)}
.xk-tag-accent{background:rgba(240,169,60,.12);color:var(--xk-accent);border-color:rgba(240,169,60,.28)}
.xk-eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.08em;
  text-transform:uppercase;color:var(--xk-text-3);font-family:var(--xk-font-num);font-weight:600}
.xk-eyebrow::before{content:"";width:26px;height:1px;background:var(--xk-primary);display:block}

/* 导航 */
.xk-header{position:sticky;top:0;z-index:80;background:rgba(10,14,18,.88);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid transparent;
  transition:border-color var(--xk-dur) var(--xk-ease),background-color var(--xk-dur) var(--xk-ease)}
.xk-header.is-scrolled{border-bottom-color:var(--xk-line);background:rgba(8,11,15,.94)}
.xk-nav-wrap{display:flex;align-items:center;gap:20px;height:76px;transition:height var(--xk-dur) var(--xk-ease)}
.xk-header.is-scrolled .xk-nav-wrap{height:64px}
.xk-logo{display:inline-flex;align-items:center;gap:10px;color:var(--xk-text-1);flex:0 0 auto}
.xk-logo svg{color:var(--xk-primary);flex:0 0 auto}
.xk-logo-text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.xk-search{flex:1 1 300px;min-width:200px;max-width:520px;display:flex;align-items:center;gap:8px;
  background:var(--xk-surface);border:1px solid var(--xk-line);border-radius:var(--xk-radius-pill);
  padding:5px 5px 5px 16px;transition:border-color .2s var(--xk-ease),box-shadow .2s var(--xk-ease)}
.xk-search:focus-within{border-color:var(--xk-primary);box-shadow:0 0 0 3px var(--xk-primary-soft)}
.xk-search svg{color:var(--xk-text-3);flex:0 0 auto}
.xk-search-input{flex:1 1 auto;min-width:0;background:transparent;border:0;outline:none;font-size:15px;line-height:1.6;color:var(--xk-text-1);padding:6px 0}
.xk-search-input::placeholder{color:var(--xk-text-3)}
.xk-search-btn{padding:9px 20px;font-size:14px;min-height:38px;border-radius:var(--xk-radius-pill)}
.xk-nav-links{display:flex;align-items:center;gap:16px;margin-left:auto}
.xk-nav-link{position:relative;font-size:15px;color:var(--xk-text-2);padding:6px 0;transition:color .2s var(--xk-ease)}
.xk-nav-link:hover{color:var(--xk-text-1)}
.xk-nav-link.is-active{color:var(--xk-text-1);font-weight:600}
.xk-nav-link.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;background:var(--xk-primary);border-radius:2px}
.xk-chips-row{display:flex;gap:10px;overflow-x:auto;padding:0 0 13px;scrollbar-width:none;transition:opacity .2s var(--xk-ease)}
.xk-chips-row::-webkit-scrollbar{display:none}
.xk-header.is-scrolled .xk-chips-row{display:none}
.xk-chip{display:inline-flex;align-items:center;flex:0 0 auto;padding:7px 16px;border-radius:var(--xk-radius-pill);
  font-size:14px;color:var(--xk-text-2);border:1px solid var(--xk-line);background:rgba(255,255,255,.02);
  transition:border-color .2s var(--xk-ease),color .2s var(--xk-ease),background-color .2s var(--xk-ease)}
.xk-chip:hover{border-color:var(--xk-primary);color:var(--xk-text-1)}
.xk-chip.is-active{background:var(--xk-primary);color:#04231f;border-color:var(--xk-primary);font-weight:600}
.xk-menu-btn{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--xk-line);
  align-items:center;justify-content:center;color:var(--xk-text-1);margin-left:auto}
.xk-menu-btn:hover{border-color:var(--xk-line-strong)}

/* 移动抽屉 */
.xk-drawer{position:fixed;inset:0;z-index:120;visibility:hidden;opacity:0;transition:opacity .24s var(--xk-ease),visibility .24s}
.xk-drawer.is-open{visibility:visible;opacity:1}
.xk-drawer-mask{position:absolute;inset:0;background:rgba(6,9,12,.72)}
.xk-drawer-panel{position:absolute;top:0;right:0;width:min(360px,88vw);height:100%;background:var(--xk-bg-2);
  border-left:1px solid var(--xk-line);padding:22px;overflow-y:auto;transform:translateX(100%);
  transition:transform .28s var(--xk-ease);display:flex;flex-direction:column;gap:20px}
.xk-drawer.is-open .xk-drawer-panel{transform:translateX(0)}
.xk-drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--xk-line);align-self:flex-end;
  display:flex;align-items:center;justify-content:center;font-size:20px;line-height:1}
.xk-drawer .xk-search{max-width:none;flex:0 0 auto}
.xk-drawer-links{display:flex;flex-direction:column;gap:2px;border-top:1px solid var(--xk-line);padding-top:16px}
.xk-drawer-links a{padding:12px 4px;border-bottom:1px solid var(--xk-line);font-size:16px;color:var(--xk-text-2)}
.xk-drawer-links a:hover{color:var(--xk-text-1)}
.xk-drawer-links a.is-active{color:var(--xk-primary);font-weight:600}

/* Hero */
.xk-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--xk-line);background:var(--xk-bg)}
.xk-hero::before{content:"";position:absolute;inset:0;pointer-events:none;opacity:.34;
  background-image:radial-gradient(rgba(238,243,247,.30) 1px,transparent 1px);background-size:36px 36px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.95),rgba(0,0,0,0) 78%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.95),rgba(0,0,0,0) 78%)}
.xk-hero-ring,.xk-hero-ring-2{position:absolute;border-radius:50%;border:1px solid rgba(18,179,155,.20);pointer-events:none}
.xk-hero-ring{width:660px;height:660px;top:-300px;right:-180px}
.xk-hero-ring-2{width:420px;height:420px;top:-190px;right:-80px;border-color:rgba(240,169,60,.16)}
.xk-hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;padding:84px 0 96px}
.xk-hero-text h1{font-size:clamp(32px,4.6vw,56px);line-height:1.15;margin:18px 0 20px}
.xk-hero-text h1 em{font-style:normal;color:var(--xk-primary)}
.xk-hero-sub{font-size:18px;color:var(--xk-text-2);max-width:620px}
.xk-hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.xk-hero-stats{display:flex;flex-wrap:wrap;gap:36px;margin-top:44px;padding-top:28px;border-top:1px solid var(--xk-line)}
.xk-hero-stats li{display:flex;flex-direction:column;gap:2px}
.xk-hero-stats b{font-family:var(--xk-font-num);font-size:30px;font-weight:600;line-height:1;color:var(--xk-text-1)}
.xk-hero-stats span{font-size:14px;color:var(--xk-text-3)}
.xk-hero-media{position:relative}
.xk-hero-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--xk-radius-card);
  border:1px solid var(--xk-line);box-shadow:var(--xk-shadow-2)}

/* 板块 */
.xk-section{padding:96px 0}
.xk-section-alt{background:var(--xk-bg-2);border-top:1px solid var(--xk-line);border-bottom:1px solid var(--xk-line)}
.xk-section-head{max-width:760px;margin-bottom:48px}
.xk-section-head h2{font-size:clamp(26px,3.2vw,40px);margin:14px 0 16px}
.xk-section-head p{color:var(--xk-text-2);font-size:17px}
.xk-section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* 痛点卡 */
.xk-pain-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.xk-pain{position:relative;background:var(--xk-surface);border:1px solid var(--xk-line);border-radius:var(--xk-radius-card);
  padding:28px 24px 26px 28px;transition:border-color var(--xk-dur) var(--xk-ease),transform var(--xk-dur) var(--xk-ease),box-shadow var(--xk-dur) var(--xk-ease)}
.xk-pain::before{content:"";position:absolute;left:0;top:26px;bottom:26px;width:3px;border-radius:0 3px 3px 0;background:var(--xk-primary)}
.xk-pain:hover{border-color:rgba(18,179,155,.30);transform:translateY(-2px);box-shadow:var(--xk-shadow-2)}
.xk-pain-num{font-family:var(--xk-font-num);font-size:22px;font-weight:600;color:var(--xk-accent);letter-spacing:.04em}
.xk-pain h3{font-size:18px;margin:12px 0 10px;font-weight:700}
.xk-pain p{font-size:15px;color:var(--xk-text-2);line-height:1.8}

/* 方案卡 */
.xk-solution-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.xk-sol{display:flex;flex-direction:column;background:var(--xk-surface);border:1px solid var(--xk-line);
  border-radius:var(--xk-radius-card);padding:30px 28px;transition:border-color var(--xk-dur) var(--xk-ease),transform var(--xk-dur) var(--xk-ease),box-shadow var(--xk-dur) var(--xk-ease)}
.xk-sol:hover{border-color:rgba(18,179,155,.30);transform:translateY(-2px);box-shadow:var(--xk-shadow-2)}
.xk-sol-feat{grid-column:span 2;flex-direction:row;gap:32px;align-items:center;padding:0;overflow:hidden}
.xk-sol-feat-media{flex:0 0 46%;align-self:stretch;overflow:hidden}
.xk-sol-feat-media img{width:100%;height:100%;min-height:280px;object-fit:cover;border-radius:0;border:0;transition:transform .3s var(--xk-ease)}
.xk-sol:hover .xk-sol-feat-media img{transform:scale(1.03)}
.xk-sol-feat-body{padding:32px 32px 32px 0;flex:1 1 auto}
.xk-sol-icon{width:44px;height:44px;border-radius:12px;background:var(--xk-primary-soft);color:var(--xk-primary);
  display:flex;align-items:center;justify-content:center;border:1px solid rgba(18,179,155,.24)}
.xk-sol h3{font-size:21px;margin:20px 0 12px}
.xk-sol-feat h3{margin-top:16px}
.xk-sol p{font-size:15px;color:var(--xk-text-2)}
.xk-sol-list{margin:20px 0 24px;display:flex;flex-direction:column;gap:10px}
.xk-sol-list li{display:flex;gap:10px;font-size:15px;color:var(--xk-text-2)}
.xk-sol-list svg{flex:0 0 auto;color:var(--xk-primary);margin-top:6px}
.xk-sol .xk-link{margin-top:auto}

/* 数据区 */
.xk-stats{background:var(--xk-inverse-bg);color:var(--xk-inverse-text);padding:88px 0;
  border-top:1px solid rgba(10,14,18,.10);border-bottom:1px solid rgba(10,14,18,.10)}
.xk-stats .xk-eyebrow{color:rgba(10,14,18,.45)}
.xk-stats .xk-eyebrow::before{background:#0E907E}
.xk-stats h2{font-size:clamp(26px,3.2vw,40px);margin:14px 0 46px;color:var(--xk-inverse-text)}
.xk-stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.xk-stat b{display:block;font-family:var(--xk-font-num);font-size:56px;font-weight:600;line-height:1;color:#0E907E}
.xk-stat span{display:block;margin-top:12px;font-size:14px;color:rgba(10,14,18,.58)}

/* 表单 */
.xk-form-wrap{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.xk-form-aside h2{font-size:clamp(26px,3vw,38px);margin:14px 0 16px}
.xk-form-aside p{color:var(--xk-text-2)}
.xk-aside-list{margin-top:28px;display:flex;flex-direction:column;gap:12px}
.xk-aside-list li{display:flex;gap:10px;font-size:15px;color:var(--xk-text-2)}
.xk-aside-list li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--xk-accent);margin-top:10px;flex:0 0 auto}
.xk-form{background:var(--xk-surface);border:1px solid var(--xk-line);border-radius:var(--xk-radius-card);padding:32px}
.xk-field{margin-bottom:20px}
.xk-field label{display:block;font-size:14px;color:var(--xk-text-2);margin-bottom:8px;font-weight:500}
.xk-input,.xk-select,.xk-textarea{width:100%;background:var(--xk-bg-2);border:1px solid var(--xk-line);
  border-radius:var(--xk-radius-input);padding:13px 15px;font-size:15px;color:var(--xk-text-1);
  transition:border-color .2s var(--xk-ease),box-shadow .2s var(--xk-ease);appearance:none}
.xk-textarea{min-height:120px;resize:vertical;line-height:1.75}
.xk-input::placeholder,.xk-textarea::placeholder{color:var(--xk-text-3)}
.xk-input:focus,.xk-select:focus,.xk-textarea:focus{outline:none;border-color:var(--xk-primary);box-shadow:0 0 0 3px var(--xk-primary-soft)}
.xk-select{background-image:linear-gradient(45deg,transparent 50%,var(--xk-text-3) 50%),linear-gradient(135deg,var(--xk-text-3) 50%,transparent 50%);
  background-position:calc(100% - 20px) 22px,calc(100% - 15px) 22px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:42px}
.xk-select option{background:var(--xk-bg-2);color:var(--xk-text-1)}
.xk-check{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--xk-text-2);line-height:1.7}
.xk-check input{width:18px;height:18px;margin-top:4px;accent-color:var(--xk-primary);flex:0 0 auto}
.xk-form .xk-btn{width:100%;margin-top:6px}
.xk-form-msg{margin-top:14px;font-size:14px;color:var(--xk-primary);display:none}
.xk-form-msg.is-show{display:block}
.xk-form-msg.is-error{color:var(--xk-alert)}
.xk-privacy{margin-top:16px;font-size:13px;color:var(--xk-text-3)}
.xk-privacy a{color:var(--xk-text-2);text-decoration:underline;text-underline-offset:3px}
.xk-privacy a:hover{color:var(--xk-primary)}

/* 资讯列表 */
.xk-news-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px}
.xk-card{display:block;background:var(--xk-surface);border:1px solid var(--xk-line);border-radius:var(--xk-radius-card);
  overflow:hidden;transition:border-color var(--xk-dur) var(--xk-ease),transform var(--xk-dur) var(--xk-ease),box-shadow var(--xk-dur) var(--xk-ease)}
.xk-card:hover{border-color:rgba(18,179,155,.30);transform:translateY(-2px);box-shadow:var(--xk-shadow-2)}
.xk-news-feat-media{overflow:hidden;aspect-ratio:16/9}
.xk-news-feat-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--xk-ease)}
.xk-card:hover .xk-news-feat-media img{transform:scale(1.03)}
.xk-news-body{padding:24px}
.xk-news-body h3{font-size:21px;margin:14px 0 12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.xk-news-body p{font-size:15px;color:var(--xk-text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.xk-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;font-size:13px;color:var(--xk-text-3)}
.xk-meta .xk-dot{width:3px;height:3px;border-radius:50%;background:var(--xk-text-3)}
.xk-news-side{display:flex;flex-direction:column;gap:16px}
.xk-news-mini{display:grid;grid-template-columns:132px 1fr;gap:16px;padding:14px}
.xk-news-mini-media{overflow:hidden;border-radius:12px;aspect-ratio:16/9}
.xk-news-mini-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--xk-ease)}
.xk-card:hover .xk-news-mini-media img{transform:scale(1.03)}
.xk-news-mini h3{font-size:16px;line-height:1.5;margin:0 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.xk-news-mini .xk-meta{margin-top:0}
.xk-empty{grid-column:1/-1;text-align:center;padding:56px 24px;background:var(--xk-surface);
  border:1px dashed var(--xk-line-strong);border-radius:var(--xk-radius-card)}
.xk-empty p{color:var(--xk-text-2);margin-bottom:18px}

/* FAQ */
.xk-faq{max-width:860px;margin:0 auto;border-top:1px solid var(--xk-line)}
.xk-faq-item{border-bottom:1px solid var(--xk-line)}
.xk-faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;text-align:left;
  padding:22px 0;font-size:17px;font-weight:500;color:var(--xk-text-1);transition:color .2s var(--xk-ease)}
.xk-faq-q:hover{color:var(--xk-primary)}
.xk-faq-icon{flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform var(--xk-dur) var(--xk-ease)}
.xk-faq-icon::before,.xk-faq-icon::after{content:"";position:absolute;background:var(--xk-primary);border-radius:2px}
.xk-faq-icon::before{left:0;right:0;top:10px;height:2px}
.xk-faq-icon::after{top:0;bottom:0;left:10px;width:2px;transition:transform var(--xk-dur) var(--xk-ease)}
.xk-faq-item.is-open .xk-faq-icon{transform:rotate(90deg)}
.xk-faq-item.is-open .xk-faq-icon::after{transform:scaleY(0)}
.xk-faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows var(--xk-dur) var(--xk-ease)}
.xk-faq-item.is-open .xk-faq-a{grid-template-rows:1fr}
.xk-faq-a > div{overflow:hidden}
.xk-faq-a p{padding:0 0 24px;color:var(--xk-text-2);font-size:16px;line-height:1.85;max-width:760px}
.xk-faq-a a{color:var(--xk-primary);text-decoration:underline;text-underline-offset:3px}

/* CTA 带 */
.xk-cta-band{position:relative;overflow:hidden;padding:80px 0;
  background-image:linear-gradient(rgba(7,10,13,.78),rgba(7,10,13,.88)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;border-top:1px solid var(--xk-line);border-bottom:1px solid var(--xk-line)}
.xk-cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.xk-cta-inner h2{font-size:clamp(24px,3vw,36px);margin-bottom:12px}
.xk-cta-inner p{color:var(--xk-text-2);max-width:620px}

/* 页脚 */
.xk-footer{background:#070A0D;border-top:1px solid var(--xk-line);padding:72px 0 0}
.xk-footer-grid{display:grid;grid-template-columns:4fr 2fr 2fr 2.4fr;gap:40px;padding-bottom:56px}
.xk-footer h3{font-size:15px;font-weight:700;margin-bottom:18px;color:var(--xk-text-1)}
.xk-footer-brand p{font-size:14px;color:var(--xk-text-3);margin:16px 0 0;max-width:300px;line-height:1.8}
.xk-footer-brand .xk-logo{margin-bottom:4px}
.xk-footer-list{display:flex;flex-direction:column;gap:11px}
.xk-footer-list a{font-size:14px;color:var(--xk-text-2);transition:color .2s var(--xk-ease)}
.xk-footer-list a:hover{color:var(--xk-primary)}
.xk-footer-list span{font-size:14px;color:var(--xk-text-3)}
.xk-footer-bottom{border-top:1px solid var(--xk-line);padding:22px 0 30px;display:flex;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:13px;color:var(--xk-text-3)}

/* 弹层 */
.xk-modal{position:fixed;inset:0;z-index:140;display:flex;align-items:center;justify-content:center;
  padding:24px;visibility:hidden;opacity:0;transition:opacity .24s var(--xk-ease),visibility .24s}
.xk-modal.is-open{visibility:visible;opacity:1}
.xk-modal-mask{position:absolute;inset:0;background:rgba(6,9,12,.72)}
.xk-modal-panel{position:relative;width:min(520px,100%);max-height:88vh;overflow-y:auto;background:var(--xk-surface);
  border:1px solid var(--xk-line);border-radius:var(--xk-radius-card);padding:32px;transform:translateY(10px);
  transition:transform .28s var(--xk-ease);box-shadow:var(--xk-shadow-2)}
.xk-modal.is-open .xk-modal-panel{transform:translateY(0)}
.xk-modal-close{position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:10px;
  border:1px solid var(--xk-line);display:flex;align-items:center;justify-content:center;font-size:18px;line-height:1}
.xk-modal-close:hover{border-color:var(--xk-primary);color:var(--xk-primary)}
.xk-modal-panel h2{font-size:22px;margin-bottom:8px}
.xk-modal-panel > p{font-size:14px;color:var(--xk-text-2);margin-bottom:22px}

/* 动效 */
.xk-reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--xk-ease),transform .42s var(--xk-ease)}
.xk-reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .xk-reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* 响应式 */
@media (max-width:1199px){
  .xk-search,.xk-nav-links,.xk-chips-row{display:none}
  .xk-menu-btn{display:flex}
  .xk-solution-grid{grid-template-columns:repeat(2,1fr)}
  .xk-sol-feat{grid-column:span 2}
  .xk-form-wrap{grid-template-columns:1fr;gap:40px}
  .xk-news-grid{grid-template-columns:1fr}
  .xk-footer-grid{grid-template-columns:2fr 1fr 1fr;gap:32px}
}
@media (max-width:991px){
  .xk-section{padding:72px 0}
  .xk-hero-grid{grid-template-columns:1fr;gap:40px;padding:56px 0 72px}
  .xk-hero-media img{aspect-ratio:16/9}
  .xk-pain-grid{grid-template-columns:repeat(2,1fr)}
  .xk-stats-grid{grid-template-columns:repeat(2,1fr);gap:36px}
  .xk-stats{padding:72px 0}
  .xk-sol-feat{flex-direction:column;align-items:stretch}
  .xk-sol-feat-media{flex:0 0 auto}
  .xk-sol-feat-media img{min-height:220px}
  .xk-sol-feat-body{padding:0 28px 30px}
}
@media (max-width:767px){
  body{font-size:16px}
  .xk-container{padding:0 18px}
  .xk-section{padding:56px 0}
  .xk-hero-grid{padding:44px 0 56px}
  .xk-hero-stats{gap:24px}
  .xk-hero-stats b{font-size:26px}
  .xk-pain-grid{grid-template-columns:1fr}
  .xk-solution-grid{grid-template-columns:1fr}
  .xk-sol-feat{grid-column:span 1}
  .xk-stats-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .xk-stat b{font-size:44px}
  .xk-form{padding:24px}
  .xk-news-mini{grid-template-columns:110px 1fr}
  .xk-footer-grid{grid-template-columns:1fr 1fr}
  .xk-cta-band{padding:56px 0}
  .xk-modal{padding:0;align-items:flex-end}
  .xk-modal-panel{width:100%;border-radius:16px 16px 0 0;max-height:92vh}
}
@media (max-width:519px){
  .xk-logo-text{font-size:15px}
  .xk-hero-cta .xk-btn{width:100%}
  .xk-footer-grid{grid-template-columns:1fr}
  .xk-news-mini{grid-template-columns:1fr}
  .xk-stats-grid{grid-template-columns:1fr}
}

/* roulang page: article */
:root{
  --xk-bg:#0A0E12;
  --xk-bg-2:#10161D;
  --xk-surface:#151D26;
  --xk-surface-hover:#1C2630;
  --xk-line:rgba(255,255,255,.08);
  --xk-line-strong:rgba(255,255,255,.16);
  --xk-text-1:#EEF3F7;
  --xk-text-2:#A7B4C0;
  --xk-text-3:#6C7A88;
  --xk-primary:#12B39B;
  --xk-primary-hover:#0E907E;
  --xk-primary-soft:rgba(18,179,155,.12);
  --xk-accent:#F0A93C;
  --xk-alert:#E4572E;
  --xk-inverse-bg:#F2F5F6;
  --xk-inverse-text:#0A0E12;
  --xk-radius-card:16px;
  --xk-radius-btn:10px;
  --xk-radius-input:12px;
  --xk-radius-img:12px;
  --xk-shadow-1:0 1px 2px rgba(0,0,0,.30);
  --xk-shadow-2:0 18px 40px -18px rgba(0,0,0,.65);
  --xk-ease:cubic-bezier(.2,.7,.2,1);
  --xk-dur:.28s;
  --xk-space-1:8px;
  --xk-space-2:16px;
  --xk-space-3:24px;
  --xk-space-4:32px;
  --xk-space-5:48px;
  --xk-space-6:64px;
  --xk-space-7:96px;
  --xk-font:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --xk-font-num:"Barlow Condensed","Oswald","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--xk-bg);
  color:var(--xk-text-2);
  font-family:var(--xk-font);
  font-size:17px;
  line-height:1.85;
  font-weight:400;
  letter-spacing:0;
  overflow-x:hidden;
}
body.xk-lock{overflow:hidden}
img{max-width:100%;display:block;border-radius:var(--xk-radius-img);border:1px solid var(--xk-line)}
a{color:var(--xk-primary);text-decoration:none;transition:color var(--xk-dur) var(--xk-ease)}
a:hover{color:var(--xk-primary-hover)}
h1,h2,h3,h4{color:var(--xk-text-1);margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.2}
h1{font-size:56px}
h2{font-size:40px}
h3{font-size:24px}
h4{font-size:18px}
p{margin:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--xk-primary);outline-offset:2px;border-radius:6px}
::selection{background:var(--xk-primary-soft);color:var(--xk-text-1)}
.xk-container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.xk-num{font-family:var(--xk-font-num);font-weight:600;letter-spacing:.02em}

/* ---------- header ---------- */
.xk-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,14,18,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color var(--xk-dur) var(--xk-ease),background var(--xk-dur) var(--xk-ease);
}
.xk-header.xk-scrolled{border-bottom-color:var(--xk-line)}
.xk-nav-wrap{display:flex;align-items:center;gap:24px;height:76px;transition:height var(--xk-dur) var(--xk-ease)}
.xk-header.xk-scrolled .xk-nav-wrap{height:64px}
.xk-logo{display:inline-flex;align-items:center;gap:10px;color:var(--xk-text-1);flex:0 0 auto}
.xk-logo svg{color:var(--xk-primary)}
.xk-logo-text{font-weight:800;font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.xk-search{
  display:flex;align-items:center;gap:8px;flex:1 1 auto;max-width:520px;min-width:260px;
  background:var(--xk-surface);border:1px solid var(--xk-line);border-radius:999px;
  padding:5px 5px 5px 16px;color:var(--xk-text-3);
  transition:border-color var(--xk-dur) var(--xk-ease),box-shadow var(--xk-dur) var(--xk-ease);
}
.xk-search:focus-within{border-color:var(--xk-primary);box-shadow:0 0 0 4px var(--xk-primary-soft)}
.xk-search-input{
  flex:1 1 auto;min-width:0;background:transparent;border:0;color:var(--xk-text-1);
  font-size:15px;padding:8px 0;outline:none;
}
.xk-search-input::placeholder{color:var(--xk-text-3)}
.xk-nav-links{display:flex;align-items:center;gap:20px;margin-left:auto}
.xk-nav-link{
  color:var(--xk-text-2);font-size:15px;position:relative;padding:6px 0;white-space:nowrap;
}
.xk-nav-link:hover{color:var(--xk-text-1)}
.xk-nav-link.is-active{color:var(--xk-text-1)}
.xk-nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--xk-primary);border-radius:2px;
}
.xk-menu-btn{
  display:none;align-items:center;justify-content:center;width:44px;height:44px;margin-left:auto;
  background:var(--xk-surface);border:1px solid var(--xk-line);border-radius:var(--xk-radius-btn);
  color:var(--xk-text-1);cursor:pointer;
}
.xk-chips-row{display:flex;gap:10px;padding:0 0 12px;overflow-x:auto;scrollbar-width:none}
.xk-chips-row::-webkit-scrollbar{display:none}
.xk-chip{
  flex:0 0 auto;font-size:13px;color:var(--xk-text-2);background:var(--xk-surface);
  border:1px solid var(--xk-line);border-radius:999px;padding:7px 14px;white-space:nowrap;
  transition:border-color var(--xk-dur) var(--xk-ease),color var(--xk-dur) var(--xk-ease),background var(--xk-dur) var(--xk-ease);
}
.xk-chip:hover{color:var(--xk-text-1);border-color:var(--xk-line-strong)}
.xk-chip.is-active{background:var(--xk-primary);border-color:var(--xk-primary);color:#08110F;font-weight:600}

/* ---------- buttons ---------- */
.xk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;padding:13px 22px;border-radius:var(--xk-radius-btn);
  border:1px solid transparent;cursor:pointer;transition:all var(--xk-dur) var(--xk-ease);white-space:nowrap;
}
.xk-btn-primary{background:var(--xk-primary);color:#07100E;border-color:var(--xk-primary)}
.xk-btn-primary:hover{background:var(--xk-primary-hover);border-color:var(--xk-primary-hover);color:#07100E;transform:translateY(-1px)}
.xk-btn-ghost{background:transparent;color:var(--xk-text-1);border-color:var(--xk-line-strong)}
.xk-btn-ghost:hover{border-color:var(--xk-primary);color:var(--xk-primary)}
.xk-btn-sm{padding:10px 16px;font-size:14px}
.xk-search-btn{padding:10px 18px;font-size:14px;border-radius:999px}
.xk-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;position:relative}
.xk-link::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:var(--xk-primary);
  transition:width .2s var(--xk-ease);
}
.xk-link:hover::after{width:100%}

/* ---------- breadcrumb / hero ---------- */
.xk-breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--xk-text-3);padding:28px 0 0}
.xk-breadcrumb a{color:var(--xk-text-3)}
.xk-breadcrumb a:hover{color:var(--xk-primary)}
.xk-breadcrumb .sep{opacity:.5}
.xk-breadcrumb .cur{color:var(--xk-text-1)}
.xk-article-head{padding:32px 0 40px;border-bottom:1px solid var(--xk-line)}
.xk-pill{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.08em;
  color:var(--xk-accent);background:rgba(240,169,60,.10);border:1px solid rgba(240,169,60,.28);
  padding:5px 12px;border-radius:999px;text-transform:uppercase;font-weight:600;
}
.xk-article-h1{font-size:40px;line-height:1.25;margin:18px 0 18px;max-width:900px}
.xk-meta{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:14px;color:var(--xk-text-3)}
.xk-meta span{display:inline-flex;align-items:center;gap:8px}
.xk-meta em{font-style:normal;color:var(--xk-text-2)}
.xk-article-cover{margin:40px 0 0}
.xk-article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ---------- layout ---------- */
.xk-article-wrap{padding:56px 0 96px}
.xk-article-grid{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:48px;align-items:start}
.xk-article-body{max-width:760px;font-size:17px;line-height:1.9;color:var(--xk-text-2)}
.xk-article-body>*+*{margin-top:24px}
.xk-article-body h2{
  font-size:28px;margin-top:48px;padding-top:8px;color:var(--xk-text-1);position:relative;padding-left:18px;
}
.xk-article-body h2::before{
  content:"";position:absolute;left:0;top:12px;bottom:6px;width:3px;border-radius:2px;background:var(--xk-primary);
}
.xk-article-body h3{font-size:20px;margin-top:32px;color:var(--xk-text-1)}
.xk-article-body p{color:var(--xk-text-2)}
.xk-article-body a{color:var(--xk-primary);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px}
.xk-article-body ul,.xk-article-body ol{padding-left:22px;margin-top:16px}
.xk-article-body li{margin-top:10px}
.xk-article-body li::marker{color:var(--xk-primary)}
.xk-article-body blockquote{
  margin-top:28px;padding:20px 24px;background:var(--xk-bg-2);border-left:3px solid var(--xk-primary);
  border-radius:0 var(--xk-radius-card) var(--xk-radius-card) 0;color:var(--xk-text-1);
}
.xk-article-body img{margin-top:28px;width:100%;height:auto}
.xk-article-body figure{margin:28px 0 0}
.xk-article-body figcaption{font-size:13px;color:var(--xk-text-3);margin-top:10px;text-align:center}
.xk-article-body table{width:100%;border-collapse:collapse;margin-top:28px;font-size:15px}
.xk-article-body th,.xk-article-body td{border:1px solid var(--xk-line);padding:12px 14px;text-align:left}
.xk-article-body th{background:var(--xk-bg-2);color:var(--xk-text-1);font-weight:600}
.xk-article-body strong{color:var(--xk-text-1)}
.xk-empty{
  border:1px dashed var(--xk-line-strong);border-radius:var(--xk-radius-card);
  padding:48px 28px;text-align:center;background:var(--xk-bg-2);max-width:760px;
}
.xk-empty h2{font-size:24px;margin-bottom:12px}
.xk-empty p{color:var(--xk-text-3);margin-bottom:22px}

/* ---------- sidebar ---------- */
.xk-side{position:sticky;top:104px;display:grid;gap:24px}
.xk-side-card{
  background:var(--xk-surface);border:1px solid var(--xk-line);border-radius:var(--xk-radius-card);
  padding:24px;box-shadow:var(--xk-shadow-1);
}
.xk-side-card h3{font-size:16px;margin-bottom:14px;letter-spacing:.01em}
.xk-toc{display:grid;gap:2px;max-height:320px;overflow:auto}
.xk-toc a{
  display:block;font-size:14px;color:var(--xk-text-2);padding:8px 10px;border-radius:8px;
  border-left:2px solid transparent;line-height:1.5;
}
.xk-toc a:hover{background:var(--xk-surface-hover);color:var(--xk-text-1);border-left-color:var(--xk-primary)}
.xk-toc .xk-toc-empty{font-size:13px;color:var(--xk-text-3);padding:6px 10px}
.xk-side-list{display:grid;gap:14px}
.xk-side-list a{display:block;font-size:14px;color:var(--xk-text-2);line-height:1.6}
.xk-side-list a:hover{color:var(--xk-primary)}
.xk-side-list span{display:block;font-size:12px;color:var(--xk-text-3);margin-top:2px}

/* ---------- tags / related ---------- */
.xk-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:56px;padding-top:32px;border-top:1px solid var(--xk-line)}
.xk-tag{
  font-size:13px;color:var(--xk-text-2);background:var(--xk-surface);border:1px solid var(--xk-line);
  border-radius:999px;padding:7px 14px;transition:all var(--xk-dur) var(--xk-ease);
}
.xk-tag:hover{color:var(--xk-primary);border-color:rgba(18,179,155,.35);transform:translateY(-2px)}
.xk-back{margin-top:36px}
.xk-related{padding:0 0 96px}
.xk-sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.xk-sec-head h2{font-size:32px}
.xk-sec-head p{font-size:15px;color:var(--xk-text-3);margin-top:10px}
.xk-card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.xk-card{
  display:flex;flex-direction:column;background:var(--xk-surface);border:1px solid var(--xk-line);
  border-radius:var(--xk-radius-card);overflow:hidden;color:inherit;
  transition:transform var(--xk-dur) var(--xk-ease),border-color var(--xk-dur) var(--xk-ease),box-shadow var(--xk-dur) var(--xk-ease);
}
.xk-card:hover{transform:translateY(-2px);border-color:rgba(18,179,155,.30);box-shadow:var(--xk-shadow-2);color:inherit}
.xk-card-thumb{overflow:hidden;border-radius:0;border:0;border-bottom:1px solid var(--xk-line)}
.xk-card-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;border:0;border-radius:0;transition:transform .3s var(--xk-ease)}
.xk-card:hover .xk-card-thumb img{transform:scale(1.03)}
.xk-card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.xk-card-body h3{font-size:19px;line-height:1.45}
.xk-card-body p{font-size:14px;color:var(--xk-text-3);line-height:1.8}
.xk-card-meta{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--xk-text-3);margin-top:auto}
.xk-card-meta .xk-badge{
  font-size:11px;letter-spacing:.06em;color:var(--xk-primary);background:var(--xk-primary-soft);
  border-radius:999px;padding:4px 10px;font-weight:600;
}

/* ---------- footer ---------- */
.xk-footer{background:#070A0D;border-top:1px solid var(--xk-line);padding:64px 0 28px;color:var(--xk-text-3)}
.xk-footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.xk-footer .xk-logo{margin-bottom:14px}
.xk-footer-brand p{font-size:14px;line-height:1.8;max-width:300px}
.xk-footer h3{font-size:15px;margin-bottom:16px;color:var(--xk-text-1)}
.xk-footer-list{display:grid;gap:10px;font-size:14px}
.xk-footer-list a{color:var(--xk-text-3)}
.xk-footer-list a:hover{color:var(--xk-primary)}
.xk-footer-list span{color:var(--xk-text-3)}
.xk-footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--xk-line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:var(--xk-text-3);
}

/* ---------- reveal ---------- */
.xk-reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--xk-ease),transform .42s var(--xk-ease)}
.xk-reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1399px){
  .xk-container{max-width:1200px}
}
@media (max-width:1199px){
  .xk-article-grid{grid-template-columns:1fr;gap:40px}
  .xk-side{position:static;grid-template-columns:repeat(2,minmax(0,1fr))}
  .xk-nav-links{gap:14px}
  .xk-search{max-width:380px}
}
@media (max-width:991px){
  h1{font-size:40px}
  .xk-article-h1{font-size:32px}
  .xk-search{display:none}
  .xk-menu-btn{display:inline-flex}
  .xk-nav-links{
    position:fixed;inset:0 0 0 auto;width:min(360px,88vw);background:var(--xk-bg-2);
    border-left:1px solid var(--xk-line);flex-direction:column;align-items:stretch;gap:6px;
    padding:96px 24px 32px;transform:translateX(102%);transition:transform var(--xk-dur) var(--xk-ease);
    overflow-y:auto;
  }
  .xk-nav-links.is-open{transform:none}
  .xk-nav-link{padding:14px 4px;font-size:16px;border-bottom:1px solid var(--xk-line)}
  .xk-nav-link.is-active::after{display:none}
  .xk-nav-links .xk-btn{margin-top:18px;width:100%}
  .xk-card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .xk-footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:16px}
  h2{font-size:26px}
  h3{font-size:20px}
  .xk-container{padding:0 18px}
  .xk-article-h1{font-size:28px;margin:14px 0 16px}
  .xk-article-body{font-size:16px;line-height:1.85}
  .xk-article-body h2{font-size:22px}
  .xk-article-wrap{padding:40px 0 64px}
  .xk-side{grid-template-columns:1fr}
  .xk-card-grid{grid-template-columns:1fr}
  .xk-sec-head{flex-direction:column;align-items:flex-start}
  .xk-sec-head h2{font-size:24px}
  .xk-footer{padding:48px 0 24px}
  .xk-footer-grid{grid-template-columns:1fr;gap:28px}
  .xk-footer-bottom{flex-direction:column}
  .xk-breadcrumb{padding-top:20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .xk-reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --xk-bg:#0A0E12;
  --xk-bg-2:#10161D;
  --xk-surface:#151D26;
  --xk-surface-hover:#1C2630;
  --xk-line:rgba(255,255,255,.08);
  --xk-line-strong:rgba(255,255,255,.16);
  --xk-text-1:#EEF3F7;
  --xk-text-2:#A7B4C0;
  --xk-text-3:#6C7A88;
  --xk-primary:#12B39B;
  --xk-primary-hover:#0E907E;
  --xk-primary-soft:rgba(18,179,155,.12);
  --xk-accent:#F0A93C;
  --xk-alert:#E4572E;
  --xk-inverse-bg:#F2F5F6;
  --xk-inverse-text:#0A0E12;
  --xk-r-card:16px;
  --xk-r-btn:10px;
  --xk-r-input:12px;
  --xk-r-img:12px;
  --xk-r-pill:999px;
  --xk-shadow-1:0 1px 2px rgba(0,0,0,.30);
  --xk-shadow-2:0 18px 40px -18px rgba(0,0,0,.65);
  --xk-dur:.28s;
  --xk-ease:cubic-bezier(.2,.7,.2,1);
  --xk-font-cn:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --xk-font-num:"Barlow Condensed","Oswald","Arial Narrow",Arial,sans-serif;
  --xk-pad-section:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--xk-bg);
  color:var(--xk-text-1);
  font-family:var(--xk-font-cn);
  font-size:17px;
  line-height:1.85;
  font-weight:400;
  letter-spacing:0;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--xk-primary);text-decoration:none;transition:color var(--xk-dur) var(--xk-ease)}
a:hover{color:var(--xk-primary-hover)}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.22;color:var(--xk-text-1)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--xk-primary);outline-offset:3px;border-radius:6px}
::selection{background:var(--xk-primary-soft);color:var(--xk-text-1)}

/* 通用布局 */
.xk-container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.xk-section{padding:var(--xk-pad-section) 0}
.xk-section-alt{background:var(--xk-bg-2);border-top:1px solid var(--xk-line);border-bottom:1px solid var(--xk-line)}
.xk-section-head{max-width:760px;margin-bottom:48px}
.xk-section-head h2{font-size:40px;margin-bottom:16px}
.xk-section-head p{color:var(--xk-text-2);font-size:17px}
.xk-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--xk-font-num);
  font-size:13px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--xk-accent);font-weight:600;margin-bottom:16px;
}
.xk-eyebrow::before{content:"";width:22px;height:1px;background:var(--xk-accent);display:block;opacity:.7}
.xk-lead{color:var(--xk-text-2);font-size:17px}

/* 按钮 */
.xk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 22px;border-radius:var(--xk-r-btn);
  font-size:16px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--xk-dur) var(--xk-ease),background-color var(--xk-dur) var(--xk-ease),border-color var(--xk-dur) var(--xk-ease),color var(--xk-dur) var(--xk-ease);
  white-space:nowrap;
}
.xk-btn-primary{background:var(--xk-primary);color:#06231F}
.xk-btn-primary:hover{background:var(--xk-primary-hover);color:#041D1A;transform:translateY(-1px)}
.xk-btn-ghost{background:transparent;color:var(--xk-text-1);border-color:var(--xk-line-strong)}
.xk-btn-ghost:hover{border-color:var(--xk-primary);color:var(--xk-primary);transform:translateY(-1px)}
.xk-btn-sm{padding:9px 16px;font-size:14px}
.xk-btn-block{width:100%}
.xk-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--xk-primary);font-weight:600;font-size:15px;
  position:relative;
}
.xk-link::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;
  background:var(--xk-primary);transition:width var(--xk-dur) var(--xk-ease);
}
.xk-link:hover::after{width:100%}

/* 头部导航 */
.xk-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(10,14,18,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color var(--xk-dur) var(--xk-ease),background-color var(--xk-dur) var(--xk-ease);
}
.xk-header.is-scrolled{border-bottom-color:var(--xk-line);background:rgba(10,14,18,.97)}
.xk-nav-wrap{
  display:flex;align-items:center;gap:20px;
  height:76px;transition:height var(--xk-dur) var(--xk-ease);
}
.xk-header.is-scrolled .xk-nav-wrap{height:64px}
.xk-logo{display:inline-flex;align-items:center;gap:10px;color:var(--xk-text-1);flex-shrink:0}
.xk-logo svg{color:var(--xk-primary);flex-shrink:0}
.xk-logo-text{font-size:18px;font-weight:800;letter-spacing:-.02em;white-space:nowrap}
.xk-logo:hover{color:var(--xk-text-1)}
.xk-search{
  display:flex;align-items:center;gap:8px;
  flex:1 1 auto;max-width:520px;
  background:var(--xk-surface);
  border:1px solid var(--xk-line-strong);
  border-radius:var(--xk-r-pill);
  padding:5px 5px 5px 16px;
  transition:border-color var(--xk-dur) var(--xk-ease),box-shadow var(--xk-dur) var(--xk-ease);
}
.xk-search:focus-within{border-color:var(--xk-primary);box-shadow:0 0 0 4px var(--xk-primary-soft)}
.xk-search svg{color:var(--xk-text-3);flex-shrink:0}
.xk-search-input{
  flex:1 1 auto;min-width:0;background:transparent;border:0;outline:none;
  color:var(--xk-text-1);font-size:15px;padding:8px 0;font-family:inherit;
}
.xk-search-input::placeholder{color:var(--xk-text-3)}
.xk-search-btn{padding:9px 18px;font-size:14px;border-radius:var(--xk-r-pill)}
.xk-nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.xk-nav-link{
  position:relative;color:var(--xk-text-2);font-size:15px;font-weight:500;
  padding:8px 10px;border-radius:8px;white-space:nowrap;
}
.xk-nav-link::after{
  content:"";position:absolute;left:10px;right:10px;bottom:2px;height:2px;
  background:var(--xk-primary);border-radius:2px;transform:scaleX(0);
  transform-origin:center;transition:transform var(--xk-dur) var(--xk-ease);
}
.xk-nav-link:hover{color:var(--xk-text-1)}
.xk-nav-link:hover::after,.xk-nav-link.is-active::after{transform:scaleX(1)}
.xk-nav-link.is-active{color:var(--xk-text-1)}
.xk-menu-btn{
  display:none;margin-left:auto;
  width:44px;height:44px;border-radius:10px;
  background:var(--xk-surface);border:1px solid var(--xk-line-strong);
  color:var(--xk-text-1);cursor:pointer;
  align-items:center;justify-content:center;
}
.xk-menu-btn:hover{border-color:var(--xk-primary);color:var(--xk-primary)}
.xk-chips-row{
  display:flex;align-items:center;gap:10px;
  padding:0 0 12px;overflow-x:auto;scrollbar-width:none;
}
.xk-chips-row::-webkit-scrollbar{display:none}
.xk-chip{
  flex:0 0 auto;
  display:inline-flex;align-items:center;
  padding:7px 15px;border-radius:var(--xk-r-pill);
  border:1px solid var(--xk-line);color:var(--xk-text-2);
  font-size:13.5px;font-weight:500;white-space:nowrap;
  transition:all var(--xk-dur) var(--xk-ease);
}
.xk-chip:hover{border-color:var(--xk-primary);color:var(--xk-primary)}
.xk-chip.is-active{background:var(--xk-primary);border-color:var(--xk-primary);color:#06231F;font-weight:600}

/* 移动抽屉 */
.xk-drawer{
  position:fixed;inset:0;z-index:1200;
  background:rgba(6,9,12,.72);
  opacity:0;visibility:hidden;transition:opacity var(--xk-dur) var(--xk-ease),visibility var(--xk-dur) var(--xk-ease);
}
.xk-drawer.is-open{opacity:1;visibility:visible}
.xk-drawer-panel{
  position:absolute;top:0;right:0;height:100%;width:min(88vw,360px);
  background:var(--xk-bg-2);border-left:1px solid var(--xk-line);
  padding:24px 20px 40px;overflow-y:auto;
  transform:translateX(100%);transition:transform .32s var(--xk-ease);
}
.xk-drawer.is-open .xk-drawer-panel{transform:translateX(0)}
.xk-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.xk-drawer-close{
  width:40px;height:40px;border-radius:10px;background:var(--xk-surface);
  border:1px solid var(--xk-line-strong);color:var(--xk-text-1);cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:20px;line-height:1;
}
.xk-drawer-close:hover{border-color:var(--xk-primary);color:var(--xk-primary)}
.xk-drawer-search{
  display:flex;align-items:center;gap:8px;width:100%;
  background:var(--xk-surface);border:1px solid var(--xk-line-strong);
  border-radius:var(--xk-r-pill);padding:5px 5px 5px 14px;margin-bottom:20px;
}
.xk-drawer-search input{flex:1 1 auto;min-width:0;background:transparent;border:0;outline:none;color:var(--xk-text-1);font-size:15px;padding:8px 0;font-family:inherit}
.xk-drawer-search input::placeholder{color:var(--xk-text-3)}
.xk-drawer-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.xk-drawer-links{display:flex;flex-direction:column;gap:4px;margin-bottom:24px}
.xk-drawer-links a{
  color:var(--xk-text-2);font-size:16px;font-weight:500;
  padding:12px 12px;border-radius:10px;border:1px solid transparent;
  min-height:44px;display:flex;align-items:center;
}
.xk-drawer-links a:hover{background:var(--xk-surface);color:var(--xk-text-1)}
.xk-drawer-links a.is-active{color:var(--xk-primary);border-color:var(--xk-line);background:var(--xk-primary-soft)}

/* Banner */
.xk-banner{
  position:relative;
  padding:64px 0 72px;
  background-color:var(--xk-bg-2);
  background-image:linear-gradient(rgba(6,9,12,.80),rgba(10,14,18,.94)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--xk-line);
  overflow:hidden;
}
.xk-banner::after{
  content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;
  border:1px solid var(--xk-line-strong);border-radius:50%;opacity:.5;
  pointer-events:none;
}
.xk-banner-inner{position:relative;z-index:2;max-width:820px}
.xk-breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--xk-text-3);margin-bottom:20px;
}
.xk-breadcrumb a{color:var(--xk-text-3)}
.xk-breadcrumb a:hover{color:var(--xk-primary)}
.xk-breadcrumb .sep{opacity:.6}
.xk-breadcrumb .current{color:var(--xk-text-1)}
.xk-banner h1{font-size:52px;margin-bottom:18px}
.xk-banner p{color:var(--xk-text-2);font-size:18px;max-width:700px}
.xk-banner-meta{
  display:flex;flex-wrap:wrap;gap:24px;margin-top:32px;
  padding-top:24px;border-top:1px solid var(--xk-line-strong);
}
.xk-banner-meta div{display:flex;flex-direction:column;gap:2px}
.xk-banner-meta strong{
  font-family:var(--xk-font-num);font-size:26px;font-weight:600;
  color:var(--xk-primary);line-height:1.1;
}
.xk-banner-meta span{font-size:14px;color:var(--xk-text-3)}

/* 概览两栏 */
.xk-split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.xk-split-text h2{font-size:36px;margin-bottom:22px}
.xk-split-text p{color:var(--xk-text-2);margin-bottom:18px;max-width:620px}
.xk-split-text p:last-child{margin-bottom:0}
.xk-split-media{position:relative}
.xk-split-media img{
  width:100%;height:auto;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--xk-r-img);border:1px solid var(--xk-line);
  transition:transform .3s var(--xk-ease);
}
.xk-split-media:hover img{transform:scale(1.02)}
.xk-figure-cap{font-size:13px;color:var(--xk-text-3);margin-top:12px}
.xk-split-list{margin-top:26px;display:grid;gap:12px}
.xk-split-list li{display:flex;gap:10px;align-items:flex-start;color:var(--xk-text-2);font-size:16px}
.xk-split-list li svg{flex-shrink:0;margin-top:6px;color:var(--xk-primary)}

/* 卡片网格 */
.xk-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.xk-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--xk-surface);
  border:1px solid var(--xk-line);
  border-radius:var(--xk-r-card);
  overflow:hidden;
  transition:transform .3s var(--xk-ease),border-color .3s var(--xk-ease),box-shadow .3s var(--xk-ease);
}
.xk-card:hover{transform:translateY(-2px);border-color:rgba(18,179,155,.38);box-shadow:var(--xk-shadow-2)}
.xk-card-cover{overflow:hidden;border-bottom:1px solid var(--xk-line)}
.xk-card-cover img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;transition:transform .3s var(--xk-ease)}
.xk-card:hover .xk-card-cover img{transform:scale(1.03)}
.xk-card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.xk-card-body h3{font-size:20px}
.xk-card-body p{color:var(--xk-text-2);font-size:15.5px;line-height:1.8}
.xk-card-tag{
  align-self:flex-start;
  font-family:var(--xk-font-num);font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--xk-accent);border:1px solid rgba(240,169,60,.35);
  background:rgba(240,169,60,.08);border-radius:var(--xk-r-pill);padding:3px 10px;font-weight:600;
}

/* 竖向时间轴 */
.xk-timeline{position:relative;margin-top:8px;padding-left:0}
.xk-timeline::before{
  content:"";position:absolute;left:19px;top:12px;bottom:12px;width:1px;
  background:linear-gradient(180deg,var(--xk-primary),rgba(18,179,155,.12));
}
.xk-timeline-item{position:relative;padding-left:64px;padding-bottom:36px}
.xk-timeline-item:last-child{padding-bottom:0}
.xk-timeline-dot{
  position:absolute;left:0;top:0;
  width:40px;height:40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--xk-surface);border:1px solid var(--xk-line-strong);
  font-family:var(--xk-font-num);font-size:16px;font-weight:600;color:var(--xk-primary);
}
.xk-timeline-item h3{font-size:20px;margin-bottom:8px}
.xk-timeline-item p{color:var(--xk-text-2);font-size:16px;max-width:760px}
.xk-timeline-note{
  display:inline-block;margin-top:10px;font-size:14px;color:var(--xk-accent);
  border-left:2px solid var(--xk-accent);padding-left:10px;
}

/* 关键要点 */
.xk-points{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.xk-point{
  background:var(--xk-bg-2);
  border:1px solid var(--xk-line);
  border-left:3px solid var(--xk-primary);
  border-radius:14px;padding:24px 22px;
  transition:border-color .3s var(--xk-ease),transform .3s var(--xk-ease);
}
.xk-point:hover{border-color:var(--xk-line-strong);border-left-color:var(--xk-accent);transform:translateY(-2px)}
.xk-point-num{
  font-family:var(--xk-font-num);font-size:22px;font-weight:600;color:var(--xk-accent);
  display:block;margin-bottom:10px;letter-spacing:.04em;
}
.xk-point h3{font-size:18px;margin-bottom:8px}
.xk-point p{color:var(--xk-text-2);font-size:15px}

/* 表单区 */
.xk-cta-band{
  background:var(--xk-bg-2);
  border-top:1px solid var(--xk-line);
  border-bottom:1px solid var(--xk-line);
}
.xk-form-layout{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.xk-form-intro h2{font-size:34px;margin-bottom:18px}
.xk-form-intro p{color:var(--xk-text-2);margin-bottom:20px}
.xk-form-intro ul{display:grid;gap:12px}
.xk-form-intro li{display:flex;gap:10px;color:var(--xk-text-2);font-size:15.5px}
.xk-form-intro li svg{flex-shrink:0;margin-top:6px;color:var(--xk-primary)}
.xk-form{
  background:var(--xk-surface);
  border:1px solid var(--xk-line);
  border-radius:var(--xk-r-card);
  padding:28px;
  display:grid;gap:18px;
}
.xk-field{display:grid;gap:8px}
.xk-field label{font-size:14px;color:var(--xk-text-2);font-weight:500}
.xk-field input,.xk-field select,.xk-field textarea{
  width:100%;
  background:var(--xk-bg-2);
  border:1px solid var(--xk-line-strong);
  border-radius:var(--xk-r-input);
  color:var(--xk-text-1);
  font-family:inherit;font-size:15.5px;
  padding:12px 14px;outline:none;
  transition:border-color var(--xk-dur) var(--xk-ease),box-shadow var(--xk-dur) var(--xk-ease);
}
.xk-field textarea{resize:vertical;min-height:110px;line-height:1.7}
.xk-field input::placeholder,.xk-field textarea::placeholder{color:var(--xk-text-3)}
.xk-field input:focus,.xk-field select:focus,.xk-field textarea:focus{
  border-color:var(--xk-primary);box-shadow:0 0 0 4px var(--xk-primary-soft);
}
.xk-field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--xk-text-3) 50%),linear-gradient(135deg,var(--xk-text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 50%,calc(100% - 14px) 50%;background-size:6px 6px,6px 6px;background-repeat:no-repeat;padding-right:44px}
.xk-check{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--xk-text-2);line-height:1.7}
.xk-check input{width:18px;height:18px;margin-top:4px;accent-color:var(--xk-primary);flex-shrink:0}
.xk-privacy-bar{
  font-size:13px;color:var(--xk-text-3);
  margin-top:14px;display:flex;flex-wrap:wrap;gap:6px;align-items:center;
}
.xk-privacy-bar a{color:var(--xk-text-2);text-decoration:underline;text-underline-offset:3px}
.xk-privacy-bar a:hover{color:var(--xk-primary)}

/* FAQ */
.xk-faq{max-width:900px}
.xk-faq-item{border-bottom:1px solid var(--xk-line)}
.xk-faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:transparent;border:0;color:var(--xk-text-1);cursor:pointer;
  font-size:17px;font-weight:500;text-align:left;
  padding:22px 0;font-family:inherit;line-height:1.6;
}
.xk-faq-q:hover{color:var(--xk-primary)}
.xk-faq-icon{
  flex-shrink:0;width:24px;height:24px;position:relative;
  transition:transform .26s var(--xk-ease);
}
.xk-faq-icon::before,.xk-faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--xk-primary);border-radius:2px;
}
.xk-faq-icon::before{width:14px;height:1.5px;transform:translate(-50%,-50%)}
.xk-faq-icon::after{width:1.5px;height:14px;transform:translate(-50%,-50%)}
.xk-faq-item.is-open .xk-faq-icon{transform:rotate(90deg)}
.xk-faq-item.is-open .xk-faq-icon::after{opacity:0}
.xk-faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .26s var(--xk-ease);
}
.xk-faq-a p{color:var(--xk-text-2);font-size:16px;line-height:1.85;padding:0 40px 22px 0}
.xk-faq-item.is-open .xk-faq-a{max-height:420px}

/* 页脚 CTA 带 */
.xk-footer-cta{
  position:relative;
  background-color:var(--xk-bg-2);
  background-image:linear-gradient(rgba(6,9,12,.82),rgba(6,9,12,.9)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-top:1px solid var(--xk-line);
  padding:72px 0;
}
.xk-footer-cta-inner{display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between}
.xk-footer-cta h2{font-size:32px;margin-bottom:10px}
.xk-footer-cta p{color:var(--xk-text-2);max-width:600px}
.xk-footer-cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* 页脚 */
.xk-footer{background:#070A0D;border-top:1px solid var(--xk-line);padding:64px 0 28px}
.xk-footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px}
.xk-footer h3{font-size:15px;font-weight:600;color:var(--xk-text-1);margin-bottom:18px;letter-spacing:.02em}
.xk-footer-brand p{color:var(--xk-text-3);font-size:14.5px;margin-top:16px;max-width:320px;line-height:1.8}
.xk-footer-list{display:flex;flex-direction:column;gap:12px}
.xk-footer-list a,.xk-footer-list span{color:var(--xk-text-3);font-size:14.5px}
.xk-footer-list a:hover{color:var(--xk-primary)}
.xk-footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--xk-line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--xk-text-3);
}

/* 弹层表单 */
.xk-modal{
  position:fixed;inset:0;z-index:1400;
  background:rgba(6,9,12,.72);
  display:flex;align-items:center;justify-content:center;
  padding:24px;
  opacity:0;visibility:hidden;
  transition:opacity var(--xk-dur) var(--xk-ease),visibility var(--xk-dur) var(--xk-ease);
}
.xk-modal.is-open{opacity:1;visibility:visible}
.xk-modal-panel{
  width:100%;max-width:520px;background:var(--xk-surface);
  border:1px solid var(--xk-line-strong);border-radius:var(--xk-r-card);
  padding:28px;position:relative;max-height:88vh;overflow-y:auto;
  transform:translateY(12px);transition:transform .32s var(--xk-ease);
}
.xk-modal.is-open .xk-modal-panel{transform:translateY(0)}
.xk-modal-close{
  position:absolute;top:16px;right:16px;
  width:36px;height:36px;border-radius:10px;
  background:var(--xk-bg-2);border:1px solid var(--xk-line-strong);
  color:var(--xk-text-2);cursor:pointer;font-size:18px;line-height:1;
  display:flex;align-items:center;justify-content:center;
}
.xk-modal-close:hover{border-color:var(--xk-primary);color:var(--xk-primary)}
.xk-modal-panel h2{font-size:24px;margin-bottom:10px;padding-right:40px}
.xk-modal-panel > p{color:var(--xk-text-2);font-size:15px;margin-bottom:20px}
body.xk-lock{overflow:hidden}

/* 入场动画 */
.xk-reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--xk-ease),transform .42s var(--xk-ease)}
.xk-reveal.is-visible{opacity:1;transform:none}

/* 响应式 */
@media (min-width:1400px){
  .xk-container{max-width:1280px}
}
@media (max-width:1199px){
  .xk-grid-3{grid-template-columns:repeat(2,1fr)}
  .xk-points{grid-template-columns:repeat(2,1fr)}
  .xk-split{gap:40px}
}
@media (max-width:991px){
  :root{--xk-pad-section:72px}
  .xk-search{display:none}
  .xk-nav-links{display:none}
  .xk-menu-btn{display:inline-flex}
  .xk-header.is-scrolled .xk-nav-wrap{height:64px}
  .xk-banner h1{font-size:40px}
  .xk-split{grid-template-columns:1fr;gap:36px}
  .xk-split-media{order:2}
  .xk-form-layout{grid-template-columns:1fr;gap:36px}
  .xk-section-head h2{font-size:32px}
  .xk-footer-grid{grid-template-columns:1fr 1fr}
  .xk-footer-cta h2{font-size:26px}
}
@media (max-width:767px){
  :root{--xk-pad-section:56px}
  body{font-size:16px}
  .xk-container{padding:0 18px}
  .xk-banner{padding:44px 0 52px}
  .xk-banner h1{font-size:32px}
  .xk-banner p{font-size:16px}
  .xk-section-head h2{font-size:26px}
  .xk-split-text h2{font-size:26px}
  .xk-form-intro h2{font-size:26px}
  .xk-grid-3{grid-template-columns:1fr}
  .xk-points{grid-template-columns:1fr}
  .xk-modal{align-items:flex-end;padding:0}
  .xk-modal-panel{max-width:100%;border-radius:16px 16px 0 0;max-height:92vh}
  .xk-footer-grid{grid-template-columns:1fr;gap:32px}
  .xk-footer-cta{padding:56px 0}
  .xk-footer-cta-inner{flex-direction:column;align-items:flex-start}
  .xk-footer-cta-actions{width:100%}
  .xk-footer-cta-actions .xk-btn{width:100%}
  .xk-banner-meta{gap:20px}
  .xk-faq-q{font-size:16px;padding:18px 0}
  .xk-faq-a p{padding-right:9px}
}
@media (max-width:519px){
  .xk-banner h1{font-size:28px}
  .xk-logo-text{font-size:16px}
  .xk-timeline-item{padding-left:54px}
  .xk-timeline-dot{width:34px;height:34px;font-size:14px}
  .xk-timeline::before{left:16px}
  .xk-form{padding:20px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
  .xk-reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --xk-bg:#0A0E12;
  --xk-bg-2:#10161D;
  --xk-surface:#151D26;
  --xk-surface-hover:#1C2630;
  --xk-line:rgba(255,255,255,.08);
  --xk-line-strong:rgba(255,255,255,.16);
  --xk-text-1:#EEF3F7;
  --xk-text-2:#A7B4C0;
  --xk-text-3:#6C7A88;
  --xk-primary:#12B39B;
  --xk-primary-hover:#0E907E;
  --xk-primary-soft:rgba(18,179,155,.12);
  --xk-accent:#F0A93C;
  --xk-alert:#E4572E;
  --xk-inverse-bg:#F2F5F6;
  --xk-inverse-text:#0A0E12;
  --xk-r-card:16px;
  --xk-r-btn:10px;
  --xk-r-input:12px;
  --xk-r-pill:999px;
  --xk-shadow-1:0 1px 2px rgba(0,0,0,.30);
  --xk-shadow-2:0 18px 40px -18px rgba(0,0,0,.65);
  --xk-ease:cubic-bezier(.2,.7,.2,1);
  --xk-dur:.3s;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--xk-bg);
  color:var(--xk-text-1);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .2s var(--xk-ease),border-color .2s var(--xk-ease);}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.2;color:var(--xk-text-1);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--xk-primary);outline-offset:2px;border-radius:6px;}

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

/* ---------- 导航 ---------- */
.xk-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(10,14,18,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .25s var(--xk-ease),background .25s var(--xk-ease);
}
.xk-header.is-scrolled{border-bottom-color:var(--xk-line);background:rgba(10,14,18,.95);}
.xk-nav-wrap{display:flex;align-items:center;gap:24px;height:76px;transition:height .25s var(--xk-ease);}
.xk-header.is-scrolled .xk-nav-wrap{height:64px;}
.xk-logo{display:inline-flex;align-items:center;gap:10px;color:var(--xk-primary);flex-shrink:0;}
.xk-logo-text{font-size:17px;font-weight:800;color:var(--xk-text-1);letter-spacing:-.01em;white-space:nowrap;}
.xk-logo:hover .xk-logo-text{color:var(--xk-primary);}

.xk-search{
  display:flex;align-items:center;gap:10px;flex:1 1 auto;
  max-width:520px;min-width:0;
  background:var(--xk-surface);
  border:1px solid var(--xk-line);
  border-radius:var(--xk-r-pill);
  padding:4px 4px 4px 16px;
  color:var(--xk-text-3);
  transition:border-color .2s var(--xk-ease),box-shadow .2s var(--xk-ease);
}
.xk-search:focus-within{border-color:var(--xk-primary);box-shadow:0 0 0 3px var(--xk-primary-soft);}
.xk-search-input{flex:1 1 auto;min-width:0;background:transparent;border:0;outline:none;color:var(--xk-text-1);font-size:15px;padding:8px 0;}
.xk-search-input::placeholder{color:var(--xk-text-3);}

.xk-nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;flex-shrink:0;}
.xk-nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 12px;border-radius:8px;
  font-size:15px;color:var(--xk-text-2);white-space:nowrap;
  transition:color .2s var(--xk-ease),background .2s var(--xk-ease);
}
.xk-nav-link:hover{color:var(--xk-text-1);background:var(--xk-surface-hover);}
.xk-nav-link.is-active{color:var(--xk-text-1);font-weight:600;}
.xk-nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--xk-primary);border-radius:2px;
}

.xk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:var(--xk-r-btn);
  padding:12px 22px;font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .2s var(--xk-ease),background .2s var(--xk-ease),border-color .2s var(--xk-ease),color .2s var(--xk-ease),box-shadow .2s var(--xk-ease);
}
.xk-btn-primary{background:var(--xk-primary);color:#052420;}
.xk-btn-primary:hover{background:var(--xk-primary-hover);transform:translateY(-1px);box-shadow:var(--xk-shadow-2);}
.xk-btn-primary:active{transform:translateY(0);}
.xk-btn-ghost{background:transparent;border-color:var(--xk-line-strong);color:var(--xk-text-1);}
.xk-btn-ghost:hover{border-color:var(--xk-primary);color:var(--xk-primary);}
.xk-btn-sm{padding:9px 16px;font-size:14px;border-radius:8px;}
.xk-btn-block{width:100%;}

.xk-menu-btn{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:10px;
  background:var(--xk-surface);border:1px solid var(--xk-line);
  color:var(--xk-text-1);cursor:pointer;margin-left:auto;flex-shrink:0;
}
.xk-menu-btn:hover{border-color:var(--xk-primary);color:var(--xk-primary);}

.xk-chips-row{
  display:flex;align-items:center;gap:8px;
  padding:0 0 12px;
  overflow-x:auto;scrollbar-width:none;
}
.xk-chips-row::-webkit-scrollbar{display:none;}
.xk-chip{
  flex:0 0 auto;display:inline-flex;align-items:center;
  padding:7px 15px;border-radius:var(--xk-r-pill);
  border:1px solid var(--xk-line);background:transparent;
  font-size:13px;color:var(--xk-text-2);white-space:nowrap;
  transition:all .2s var(--xk-ease);
}
.xk-chip:hover{border-color:var(--xk-primary);color:var(--xk-primary);}
.xk-chip.is-active{background:var(--xk-primary);border-color:var(--xk-primary);color:#052420;font-weight:600;}

.xk-mobile-panel{display:none;padding:4px 0 20px;border-top:1px solid var(--xk-line);}
.xk-mobile-panel.is-open{display:block;}
.xk-mobile-panel .xk-search{max-width:none;margin:16px 0 12px;}
.xk-mobile-panel .xk-chips-row{padding:0 0 16px;flex-wrap:wrap;overflow:visible;}

/* ---------- 面包屑 ---------- */
.xk-breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--xk-text-3);margin-bottom:20px;
}
.xk-breadcrumb a:hover{color:var(--xk-primary);}
.xk-breadcrumb .sep{opacity:.5;}
.xk-breadcrumb .current{color:var(--xk-text-1);}

/* ---------- Banner ---------- */
.xk-banner{
  position:relative;overflow:hidden;
  padding:60px 0 64px;
  border-bottom:1px solid var(--xk-line);
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
}
.xk-banner::before{
  content:"";position:absolute;inset:0;
  background:rgba(10,14,18,.82);
}
.xk-banner::after{
  content:"";position:absolute;right:-140px;top:-160px;width:460px;height:460px;
  border:1px solid rgba(18,179,155,.18);border-radius:50%;
  box-shadow:0 0 0 70px rgba(18,179,155,.05),0 0 0 140px rgba(18,179,155,.03);
  pointer-events:none;
}
.xk-banner .xk-container{position:relative;z-index:2;}
.xk-banner h1{
  font-size:clamp(32px,4.4vw,52px);
  margin-bottom:18px;
  max-width:900px;
}
.xk-banner-lead{
  max-width:680px;font-size:17px;color:var(--xk-text-2);line-height:1.9;
}
.xk-banner-stats{
  display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;
}
.xk-banner-stat{
  display:flex;align-items:baseline;gap:8px;
  padding:10px 18px;border-radius:var(--xk-r-pill);
  border:1px solid var(--xk-line);background:rgba(21,29,38,.7);
  font-size:14px;color:var(--xk-text-2);
}
.xk-banner-stat b{
  font-size:20px;font-weight:700;color:var(--xk-accent);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}

/* ---------- 板块 ---------- */
.xk-section{padding:96px 0;}
.xk-section--alt{background:var(--xk-bg-2);border-top:1px solid var(--xk-line);border-bottom:1px solid var(--xk-line);}
.xk-section-head{max-width:720px;margin-bottom:48px;}
.xk-eyebrow{
  display:inline-block;font-size:13px;letter-spacing:.08em;
  color:var(--xk-accent);margin-bottom:14px;font-weight:600;
}
.xk-section-title{font-size:clamp(26px,3.2vw,40px);margin-bottom:16px;}
.xk-section-desc{font-size:16px;color:var(--xk-text-2);line-height:1.85;}

/* ---------- 概览两栏 ---------- */
.xk-overview{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.xk-overview p{color:var(--xk-text-2);font-size:16.5px;line-height:1.9;}
.xk-overview p + p{margin-top:20px;}
.xk-overview-media img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border-radius:12px;border:1px solid var(--xk-line);
}

/* ---------- 步骤流程 ---------- */
.xk-steps{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.xk-steps::before{
  content:"";position:absolute;top:26px;left:8%;right:8%;height:1px;
  background:var(--xk-line-strong);z-index:0;
}
.xk-step{position:relative;z-index:1;padding-right:8px;}
.xk-step-num{
  width:52px;height:52px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--xk-bg);border:1px solid var(--xk-line-strong);
  color:var(--xk-accent);font-weight:700;font-size:16px;
  font-variant-numeric:tabular-nums;letter-spacing:.04em;
  margin-bottom:20px;transition:border-color .25s var(--xk-ease),color .25s var(--xk-ease);
}
.xk-step:hover .xk-step-num{border-color:var(--xk-primary);color:var(--xk-primary);}
.xk-step h3{font-size:19px;margin-bottom:10px;}
.xk-step p{font-size:15px;color:var(--xk-text-2);line-height:1.8;}

/* ---------- 卡片网格 ---------- */
.xk-card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.xk-card{
  display:flex;flex-direction:column;
  background:var(--xk-surface);
  border:1px solid var(--xk-line);
  border-radius:var(--xk-r-card);
  overflow:hidden;
  box-shadow:var(--xk-shadow-1);
  transition:transform .25s var(--xk-ease),border-color .25s var(--xk-ease),box-shadow .25s var(--xk-ease),background .25s var(--xk-ease);
}
.xk-card:hover{
  transform:translateY(-2px);
  border-color:rgba(18,179,155,.32);
  background:var(--xk-surface-hover);
  box-shadow:var(--xk-shadow-2);
}
.xk-card-media{overflow:hidden;border-bottom:1px solid var(--xk-line);}
.xk-card-media img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  transition:transform .3s var(--xk-ease);
}
.xk-card:hover .xk-card-media img{transform:scale(1.03);}
.xk-card-body{padding:24px;display:flex;flex-direction:column;gap:10px;}
.xk-card-body h3{font-size:18px;}
.xk-card-body p{font-size:15px;color:var(--xk-text-2);line-height:1.8;}

/* ---------- 关键要点 ---------- */
.xk-points{display:grid;grid-template-columns:repeat(2,1fr);gap:0 48px;}
.xk-point{
  display:flex;gap:18px;
  padding:24px 0;border-bottom:1px solid var(--xk-line);
}
.xk-point-num{
  flex:0 0 auto;font-size:14px;font-weight:700;color:var(--xk-accent);
  font-variant-numeric:tabular-nums;letter-spacing:.06em;padding-top:3px;
}
.xk-point h3{font-size:18px;margin-bottom:8px;}
.xk-point p{font-size:15px;color:var(--xk-text-2);line-height:1.8;}

/* ---------- CTA / 表单 ---------- */
.xk-cta{
  display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;
  background:var(--xk-surface);
  border:1px solid var(--xk-line);
  border-radius:20px;
  padding:48px;
}
.xk-cta h2{font-size:clamp(24px,2.8vw,34px);margin-bottom:18px;}
.xk-cta p{font-size:16px;color:var(--xk-text-2);line-height:1.85;}
.xk-cta-list{margin-top:24px;display:flex;flex-direction:column;gap:12px;}
.xk-cta-list li{display:flex;gap:10px;font-size:15px;color:var(--xk-text-2);}
.xk-cta-list svg{flex:0 0 auto;margin-top:6px;color:var(--xk-primary);}

.xk-form{display:block;}
.xk-field{margin-bottom:18px;}
.xk-label{display:block;font-size:14px;color:var(--xk-text-2);margin-bottom:8px;}
.xk-input,.xk-select,.xk-textarea{
  width:100%;background:var(--xk-bg-2);
  border:1px solid var(--xk-line);
  border-radius:var(--xk-r-input);
  padding:12px 14px;font-size:15px;color:var(--xk-text-1);
  transition:border-color .2s var(--xk-ease),box-shadow .2s var(--xk-ease);
}
.xk-input::placeholder,.xk-textarea::placeholder{color:var(--xk-text-3);}
.xk-input:focus,.xk-select:focus,.xk-textarea:focus{
  outline:none;border-color:var(--xk-primary);
  box-shadow:0 0 0 3px var(--xk-primary-soft);
}
.xk-textarea{min-height:104px;resize:vertical;}
.xk-select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--xk-text-3) 50%),linear-gradient(135deg,var(--xk-text-3) 50%,transparent 50%);
  background-position:calc(100% - 20px) calc(50% + 2px),calc(100% - 14px) calc(50% + 2px);
  background-size:6px 6px,6px 6px;background-repeat:no-repeat;padding-right:40px;}
.xk-check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--xk-text-3);line-height:1.7;margin-bottom:20px;}
.xk-check-row input{margin-top:4px;accent-color:var(--xk-primary);width:16px;height:16px;flex:0 0 auto;}
.xk-form-hint{margin-top:14px;font-size:13px;color:var(--xk-text-3);min-height:20px;}
.xk-form-hint.is-ok{color:var(--xk-primary);}
.xk-privacy-note{
  margin-top:16px;font-size:13px;color:var(--xk-text-3);
  display:flex;flex-wrap:wrap;align-items:center;gap:6px;
}
.xk-link{color:var(--xk-primary);position:relative;}
.xk-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;
  background:var(--xk-primary);transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--xk-ease);
}
.xk-link:hover::after{transform:scaleX(1);}

/* ---------- FAQ ---------- */
.xk-faq{border-top:1px solid var(--xk-line);}
.xk-faq .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--xk-line);border-radius:0;}
.xk-faq .accordion-header{margin:0;}
.xk-faq .accordion-button{
  position:relative;
  width:100%;background:transparent;border:0;box-shadow:none;
  color:var(--xk-text-1);font-size:17px;font-weight:500;
  padding:24px 44px 24px 0;text-align:left;line-height:1.6;
}
.xk-faq .accordion-button:not(.collapsed){color:var(--xk-primary);background:transparent;box-shadow:none;}
.xk-faq .accordion-button:focus{box-shadow:none;outline:2px solid var(--xk-primary);outline-offset:2px;}
.xk-faq .accordion-button::after{
  content:"";position:absolute;right:8px;top:50%;
  width:14px;height:2px;background:var(--xk-primary);border-radius:2px;
  background-image:none;transform:translateY(-50%);
  transition:transform .26s var(--xk-ease);margin:0;border:0;
}
.xk-faq .accordion-button::before{
  content:"";position:absolute;right:14px;top:50%;
  width:2px;height:14px;background:var(--xk-primary);border-radius:2px;
  transform:translateY(-50%);transition:transform .26s var(--xk-ease);
}
.xk-faq .accordion-button:not(.collapsed)::before{transform:translateY(-50%) scaleY(0);}
.xk-faq .accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(90deg);}
.xk-faq .accordion-body{
  padding:0 44px 26px 0;color:var(--xk-text-2);
  font-size:15.5px;line-height:1.85;
}

/* ---------- 弹层 ---------- */
.xk-modal{
  position:fixed;inset:0;z-index:2000;
  display:none;align-items:center;justify-content:center;
  padding:24px;
}
.xk-modal.is-open{display:flex;}
.xk-modal-backdrop{
  position:absolute;inset:0;background:rgba(6,9,12,.72);
}
.xk-modal-panel{
  position:relative;z-index:2;
  width:100%;max-width:520px;max-height:88vh;overflow-y:auto;
  background:var(--xk-surface);
  border:1px solid var(--xk-line);
  border-radius:var(--xk-r-card);
  padding:32px;
  box-shadow:var(--xk-shadow-2);
  animation:xkPop .28s var(--xk-ease);
}
@keyframes xkPop{from{opacity:0;transform:translateY(14px);}to{opacity:1;transform:none;}}
.xk-modal-panel h3{font-size:22px;margin-bottom:10px;}
.xk-modal-panel > p{font-size:15px;color:var(--xk-text-2);margin-bottom:22px;}
.xk-modal-close{
  position:absolute;top:16px;right:16px;
  width:38px;height:38px;border-radius:10px;
  background:var(--xk-bg-2);border:1px solid var(--xk-line);
  color:var(--xk-text-2);font-size:20px;line-height:1;cursor:pointer;
}
.xk-modal-close:hover{border-color:var(--xk-primary);color:var(--xk-primary);}

/* ---------- 页脚 ---------- */
.xk-footer{background:#070A0D;border-top:1px solid var(--xk-line);padding:64px 0 28px;}
.xk-footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.xk-footer-brand p{margin-top:16px;font-size:14px;color:var(--xk-text-3);line-height:1.8;max-width:280px;}
.xk-footer h3{font-size:14px;font-weight:700;color:var(--xk-text-1);margin-bottom:18px;letter-spacing:.04em;}
.xk-footer-list{display:flex;flex-direction:column;gap:11px;font-size:14px;color:var(--xk-text-3);}
.xk-footer-list a:hover{color:var(--xk-primary);}
.xk-footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;
  margin-top:48px;padding-top:22px;
  border-top:1px solid var(--xk-line);
  font-size:13px;color:var(--xk-text-3);
}

/* ---------- 入场动效 ---------- */
.xk-js .xk-reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--xk-ease),transform .42s var(--xk-ease);}
.xk-js .xk-reveal.is-visible{opacity:1;transform:none;}
.xk-js .xk-stagger > *:nth-child(1){transition-delay:0ms;}
.xk-js .xk-stagger > *:nth-child(2){transition-delay:60ms;}
.xk-js .xk-stagger > *:nth-child(3){transition-delay:120ms;}
.xk-js .xk-stagger > *:nth-child(4){transition-delay:180ms;}
.xk-js .xk-stagger > *:nth-child(5){transition-delay:240ms;}
.xk-js .xk-stagger > *:nth-child(6){transition-delay:300ms;}

/* ---------- 响应式 ---------- */
@media (max-width:1399.98px){
  .xk-container{max-width:1200px;}
}
@media (max-width:1199.98px){
  .xk-nav-link{padding:9px 9px;font-size:14.5px;}
  .xk-nav-links .xk-btn-sm{display:none;}
  .xk-steps{grid-template-columns:repeat(2,1fr);gap:32px 24px;}
  .xk-steps::before{display:none;}
  .xk-card-grid{grid-template-columns:repeat(2,1fr);}
  .xk-overview{grid-template-columns:1fr;gap:36px;}
  .xk-cta{grid-template-columns:1fr;gap:36px;padding:40px;}
}
@media (max-width:991.98px){
  .xk-search,.xk-nav-links{display:none;}
  .xk-menu-btn{display:inline-flex;}
  .xk-nav-wrap{height:64px;}
  .xk-chips-row{padding:0 0 10px;}
  .xk-section{padding:72px 0;}
  .xk-points{grid-template-columns:1fr;}
  .xk-footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .xk-container{padding:0 18px;}
  .xk-banner{padding:44px 0 48px;}
  .xk-section{padding:56px 0;}
  .xk-steps{grid-template-columns:1fr;gap:28px;}
  .xk-card-grid{grid-template-columns:1fr;}
  .xk-cta{padding:28px;border-radius:16px;}
  .xk-banner-stat{font-size:13px;padding:8px 14px;}
  .xk-faq .accordion-button{font-size:16px;padding:20px 40px 20px 0;}
  .xk-faq .accordion-body{padding-right:24px;}
  .xk-modal{padding:0;align-items:flex-end;}
  .xk-modal-panel{max-width:100%;border-radius:16px 16px 0 0;padding:28px 20px 32px;max-height:92vh;animation:xkSlide .3s var(--xk-ease);}
  @keyframes xkSlide{from{opacity:0;transform:translateY(40px);}to{opacity:1;transform:none;}}
}
@media (max-width:520px){
  .xk-logo-text{font-size:15.5px;}
  .xk-footer-grid{grid-template-columns:1fr;}
  .xk-footer-bottom{flex-direction:column;}
  .xk-btn{padding:11px 18px;font-size:14.5px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important;}
  .xk-js .xk-reveal{opacity:1;transform:none;}
}

/* roulang page: category3 */
:root{
  --xk-bg:#0A0E12;
  --xk-bg-2:#10161D;
  --xk-surface:#151D26;
  --xk-surface-hover:#1C2630;
  --xk-line:rgba(255,255,255,.08);
  --xk-line-strong:rgba(255,255,255,.16);
  --xk-text-1:#EEF3F7;
  --xk-text-2:#A7B4C0;
  --xk-text-3:#6C7A88;
  --xk-primary:#12B39B;
  --xk-primary-hover:#0E907E;
  --xk-primary-soft:rgba(18,179,155,.12);
  --xk-accent:#F0A93C;
  --xk-alert:#E4572E;
  --xk-inverse-bg:#F2F5F6;
  --xk-inverse-text:#0A0E12;
  --xk-r-card:16px;
  --xk-r-btn:10px;
  --xk-r-input:12px;
  --xk-r-img:12px;
  --xk-r-pill:999px;
  --xk-shadow-1:0 1px 2px rgba(0,0,0,.30);
  --xk-shadow-2:0 18px 40px -18px rgba(0,0,0,.65);
  --xk-ease:cubic-bezier(.2,.7,.2,1);
  --xk-t-fast:200ms;
  --xk-t:300ms;
  --xk-t-slow:420ms;
  --xk-sp-1:8px;
  --xk-sp-2:16px;
  --xk-sp-3:24px;
  --xk-sp-4:32px;
  --xk-sp-6:48px;
  --xk-sp-8:64px;
  --xk-sp-12:96px;
  --xk-font-num:"Barlow Condensed","Oswald",-apple-system,Helvetica,Arial,sans-serif;
  --xk-font:"Noto Sans SC","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--xk-bg);
  color:var(--xk-text-1);
  font-family:var(--xk-font);
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--xk-r-img);border:1px solid var(--xk-line);object-fit:cover}
a{color:var(--xk-primary);text-decoration:none;transition:color var(--xk-t-fast) var(--xk-ease)}
a:hover{color:var(--xk-primary-hover)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.2;color:var(--xk-text-1)}
h1{font-size:56px;font-weight:800;line-height:1.15}
h2{font-size:40px}
h3{font-size:24px}
h4{font-size:18px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--xk-primary);outline-offset:2px}
::selection{background:var(--xk-primary-soft);color:var(--xk-text-1)}

.xk-container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.xk-section{padding:var(--xk-sp-12) 0}
.xk-section--alt{background:var(--xk-bg-2);border-top:1px solid var(--xk-line);border-bottom:1px solid var(--xk-line)}
.xk-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--xk-primary);font-weight:600;margin-bottom:16px;
}
.xk-eyebrow::before{content:"";width:22px;height:1px;background:var(--xk-primary);display:block}
.xk-lead{color:var(--xk-text-2);font-size:17px;max-width:760px;margin-top:16px}
.xk-sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.xk-sec-head p{color:var(--xk-text-2);margin-top:12px;max-width:640px}
.xk-text-link{
  color:var(--xk-primary);font-weight:500;display:inline-flex;align-items:center;gap:6px;
  border-bottom:1px solid transparent;transition:border-color var(--xk-t-fast) var(--xk-ease);
}
.xk-text-link:hover{border-color:var(--xk-primary)}

/* buttons */
.xk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 24px;border-radius:var(--xk-r-btn);
  border:1px solid transparent;cursor:pointer;
  transition:background var(--xk-t-fast) var(--xk-ease),border-color var(--xk-t-fast) var(--xk-ease),transform var(--xk-t-fast) var(--xk-ease),color var(--xk-t-fast) var(--xk-ease);
  min-height:44px;
}
.xk-btn-primary{background:var(--xk-primary);color:#04140F;border-color:var(--xk-primary)}
.xk-btn-primary:hover{background:var(--xk-primary-hover);border-color:var(--xk-primary-hover);color:#04140F;transform:translateY(-1px)}
.xk-btn-ghost{background:transparent;color:var(--xk-text-1);border-color:var(--xk-line-strong)}
.xk-btn-ghost:hover{border-color:var(--xk-primary);color:var(--xk-primary);transform:translateY(-1px)}
.xk-btn-sm{padding:10px 18px;font-size:14px;min-height:40px}
.xk-btn-block{width:100%}

/* header */
.xk-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(10,14,18,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color var(--xk-t-fast) var(--xk-ease),background var(--xk-t-fast) var(--xk-ease);
}
.xk-header.is-scrolled{border-bottom-color:var(--xk-line);background:rgba(10,14,18,.97)}
.xk-nav-wrap{display:flex;align-items:center;gap:24px;height:76px;transition:height var(--xk-t-fast) var(--xk-ease)}
.xk-header.is-scrolled .xk-nav-wrap{height:64px}
.xk-logo{display:inline-flex;align-items:center;gap:10px;color:var(--xk-text-1);font-weight:700;flex:none}
.xk-logo svg{color:var(--xk-primary)}
.xk-logo-text{font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.xk-search{
  flex:1;max-width:520px;display:flex;align-items:center;gap:8px;
  background:var(--xk-surface);border:1px solid var(--xk-line-strong);
  border-radius:var(--xk-r-pill);padding:6px 6px 6px 16px;
  transition:border-color var(--xk-t-fast) var(--xk-ease),box-shadow var(--xk-t-fast) var(--xk-ease);
}
.xk-search:focus-within{border-color:var(--xk-primary);box-shadow:0 0 0 3px var(--xk-primary-soft)}
.xk-search svg{color:var(--xk-text-3);flex:none}
.xk-search-input{
  flex:1;min-width:0;background:transparent;border:0;outline:none;
  color:var(--xk-text-1);font-size:15px;font-family:inherit;padding:8px 0;
}
.xk-search-input::placeholder{color:var(--xk-text-3)}
.xk-search-btn{padding:10px 20px;min-height:38px;font-size:14px;border-radius:var(--xk-r-pill)}
.xk-nav-links{display:flex;align-items:center;gap:22px;margin-left:auto}
.xk-nav-link{
  position:relative;color:var(--xk-text-2);font-size:15px;padding:6px 0;white-space:nowrap;
}
.xk-nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--xk-primary);
  transform:scaleX(0);transform-origin:left;transition:transform var(--xk-t-fast) var(--xk-ease);
}
.xk-nav-link:hover{color:var(--xk-text-1)}
.xk-nav-link:hover::after{transform:scaleX(1)}
.xk-nav-link.is-active{color:var(--xk-text-1)}
.xk-nav-link.is-active::after{transform:scaleX(1)}
.xk-menu-btn{
  display:none;background:transparent;border:1px solid var(--xk-line-strong);
  border-radius:10px;color:var(--xk-text-1);width:44px;height:44px;
  align-items:center;justify-content:center;cursor:pointer;
}
.xk-chips-row{
  display:flex;gap:10px;overflow-x:auto;padding:0 0 14px;
  scrollbar-width:none;
}
.xk-chips-row::-webkit-scrollbar{display:none}
.xk-chip{
  flex:none;font-size:14px;padding:8px 16px;border-radius:var(--xk-r-pill);
  border:1px solid var(--xk-line);color:var(--xk-text-2);background:var(--xk-surface);
  transition:all var(--xk-t-fast) var(--xk-ease);white-space:nowrap;
}
.xk-chip:hover{border-color:var(--xk-primary);color:var(--xk-text-1)}
.xk-chip.is-active{background:var(--xk-primary);border-color:var(--xk-primary);color:#04140F;font-weight:600}
.xk-mobile-panel{
  display:none;border-top:1px solid var(--xk-line);background:var(--xk-bg-2);padding:20px 0 28px;
}
.xk-mobile-panel.is-open{display:block}
.xk-mobile-panel .xk-search{max-width:none;margin-bottom:16px}
.xk-mobile-links{display:flex;flex-direction:column;gap:4px;margin-top:16px}
.xk-mobile-links a{padding:12px 0;border-bottom:1px solid var(--xk-line);color:var(--xk-text-2);font-size:16px}
.xk-mobile-links a.is-active{color:var(--xk-primary)}

/* breadcrumb */
.xk-crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--xk-text-3);padding:22px 0 0}
.xk-crumb a{color:var(--xk-text-3)}
.xk-crumb a:hover{color:var(--xk-primary)}
.xk-crumb span.current{color:var(--xk-text-1)}

/* banner */
.xk-banner{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--xk-line);
  padding:56px 0 72px;
  background:
    linear-gradient(90deg,rgba(10,14,18,.94),rgba(10,14,18,.72) 60%,rgba(10,14,18,.9)),
    url("/assets/images/backpic/back-2.png") center/cover no-repeat;
}
.xk-banner h1{max-width:900px}
.xk-banner .xk-lead{max-width:680px}
.xk-banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.xk-tag{
  font-size:13px;letter-spacing:.04em;color:var(--xk-accent);
  border:1px solid rgba(240,169,60,.35);background:rgba(240,169,60,.08);
  padding:6px 14px;border-radius:var(--xk-r-pill);
}
.xk-orbit{position:absolute;top:-120px;right:-80px;width:520px;height:520px;opacity:.35;pointer-events:none}
.xk-orbit circle{fill:none;stroke:var(--xk-primary);stroke-width:1}
.xk-dots{
  position:absolute;inset:0;pointer-events:none;opacity:.28;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:38px 38px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
}

/* overview */
.xk-overview{display:grid;grid-template-columns:1.1fr .9fr;gap:64px;align-items:start}
.xk-overview p{color:var(--xk-text-2);margin-bottom:24px;max-width:640px}
.xk-figure{margin:0}
.xk-figure figcaption{font-size:13px;color:var(--xk-text-3);margin-top:12px}

/* tag filter bar */
.xk-filter{
  display:flex;flex-wrap:wrap;gap:10px;padding:20px;border:1px solid var(--xk-line);
  border-radius:var(--xk-r-card);background:var(--xk-surface);margin-bottom:40px;
  align-items:center;
}
.xk-filter-label{font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--xk-text-3);margin-right:8px;font-weight:600}
.xk-filter-item{
  font-size:14px;padding:8px 16px;border-radius:var(--xk-r-pill);
  border:1px solid var(--xk-line);color:var(--xk-text-2);background:transparent;cursor:pointer;
  transition:all var(--xk-t-fast) var(--xk-ease);
}
.xk-filter-item:hover{border-color:var(--xk-primary);color:var(--xk-text-1)}
.xk-filter-item.is-active{background:var(--xk-primary-soft);border-color:var(--xk-primary);color:var(--xk-primary);font-weight:600}

/* masonry */
.xk-masonry{column-count:3;column-gap:24px}
.xk-masonry > *{break-inside:avoid;-webkit-column-break-inside:avoid;margin-bottom:24px}
.xk-card{
  display:block;background:var(--xk-surface);border:1px solid var(--xk-line);
  border-radius:var(--xk-r-card);padding:20px;color:var(--xk-text-1);
  box-shadow:var(--xk-shadow-1);
  transition:border-color var(--xk-t) var(--xk-ease),transform var(--xk-t) var(--xk-ease),background var(--xk-t) var(--xk-ease),box-shadow var(--xk-t) var(--xk-ease);
}
.xk-card:hover{border-color:rgba(18,179,155,.30);transform:translateY(-2px);background:var(--xk-surface-hover);box-shadow:var(--xk-shadow-2)}
.xk-card-cover{overflow:hidden;border-radius:var(--xk-r-img);margin-bottom:18px}
.xk-card-cover img{width:100%;aspect-ratio:16/9;transition:transform var(--xk-t) var(--xk-ease)}
.xk-card:hover .xk-card-cover img{transform:scale(1.03)}
.xk-card-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:12px}
.xk-pill{
  font-size:12px;padding:4px 12px;border-radius:var(--xk-r-pill);
  background:var(--xk-primary-soft);color:var(--xk-primary);border:1px solid rgba(18,179,155,.28);
}
.xk-pill--amber{background:rgba(240,169,60,.08);color:var(--xk-accent);border-color:rgba(240,169,60,.3)}
.xk-card h3{font-size:20px;margin-bottom:10px}
.xk-card p{color:var(--xk-text-2);font-size:15px;line-height:1.8}
.xk-card-num{
  font-family:var(--xk-font-num);font-size:14px;color:var(--xk-text-3);letter-spacing:.06em;
}
.xk-mini-list{margin-top:16px;display:flex;flex-direction:column;gap:8px}
.xk-mini-list li{display:flex;gap:10px;font-size:14px;color:var(--xk-text-2);line-height:1.7}
.xk-mini-list li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--xk-primary);margin-top:9px;flex:none}

/* key points */
.xk-points{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.xk-point{
  border:1px solid var(--xk-line);border-left:3px solid var(--xk-primary);
  border-radius:12px;background:var(--xk-surface);padding:24px;
}
.xk-point .num{
  font-family:var(--xk-font-num);font-size:28px;color:var(--xk-accent);
  display:block;margin-bottom:8px;letter-spacing:.04em;
}
.xk-point h3{font-size:18px;margin-bottom:8px}
.xk-point p{color:var(--xk-text-2);font-size:15px}

/* cta band */
.xk-cta{
  position:relative;overflow:hidden;border-radius:20px;
  border:1px solid var(--xk-line);
  padding:48px;
  background:
    linear-gradient(90deg,rgba(10,14,18,.93),rgba(10,14,18,.78)),
    url("/assets/images/backpic/back-3.png") center/cover no-repeat;
}
.xk-cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.xk-cta p{color:var(--xk-text-2);margin-top:16px;max-width:460px}
.xk-cta-list{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.xk-cta-list li{display:flex;gap:10px;color:var(--xk-text-2);font-size:15px}
.xk-cta-list svg{color:var(--xk-primary);flex:none;margin-top:5px}

/* form */
.xk-form{background:var(--xk-surface);border:1px solid var(--xk-line);border-radius:var(--xk-r-card);padding:28px}
.xk-field{margin-bottom:18px}
.xk-field label{display:block;font-size:14px;color:var(--xk-text-2);margin-bottom:8px}
.xk-input,.xk-select,.xk-textarea{
  width:100%;background:#0F151C;border:1px solid var(--xk-line-strong);
  border-radius:var(--xk-r-input);color:var(--xk-text-1);
  padding:13px 14px;font-size:15px;font-family:inherit;outline:none;
  transition:border-color var(--xk-t-fast) var(--xk-ease),box-shadow var(--xk-t-fast) var(--xk-ease);
}
.xk-textarea{min-height:110px;resize:vertical}
.xk-input:focus,.xk-select:focus,.xk-textarea:focus{border-color:var(--xk-primary);box-shadow:0 0 0 3px var(--xk-primary-soft)}
.xk-input::placeholder,.xk-textarea::placeholder{color:var(--xk-text-3)}
.xk-select{appearance:none;background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%236C7A88' stroke-width='1.6'%3E%3Cpath d='m4 6 4 4 4-4'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;background-size:16px;padding-right:40px}
.xk-check{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--xk-text-2);line-height:1.7}
.xk-check input{margin-top:5px;accent-color:var(--xk-primary);width:16px;height:16px;flex:none}
.xk-form-note{font-size:13px;color:var(--xk-text-3);margin-top:14px}
.xk-form-note a{color:var(--xk-text-2);text-decoration:underline}
.xk-error{display:none;color:var(--xk-alert);font-size:13px;margin-top:8px}
.xk-field.has-error .xk-input,.xk-field.has-error .xk-select{border-color:var(--xk-alert)}
.xk-field.has-error .xk-error{display:block}

/* faq */
.xk-faq{border-top:1px solid var(--xk-line)}
.xk-faq-item{border-bottom:1px solid var(--xk-line)}
.xk-faq-btn{
  width:100%;background:transparent;border:0;text-align:left;color:var(--xk-text-1);
  font-size:17px;font-weight:500;padding:22px 44px 22px 0;position:relative;cursor:pointer;
  transition:color var(--xk-t-fast) var(--xk-ease);line-height:1.6;
}
.xk-faq-btn:hover{color:var(--xk-primary)}
.xk-faq-btn::after{
  content:"+";position:absolute;right:8px;top:50%;transform:translateY(-50%);
  font-family:var(--xk-font-num);font-size:24px;color:var(--xk-primary);line-height:1;
  transition:transform var(--xk-t-fast) var(--xk-ease);
}
.xk-faq-btn[aria-expanded="true"]::after{transform:translateY(-50%) rotate(90deg)}
.xk-faq-body{padding:0 40px 24px 0;color:var(--xk-text-2);font-size:16px;line-height:1.85}

/* footer */
.xk-footer{background:#070A0D;border-top:1px solid var(--xk-line);padding:64px 0 0;margin-top:0}
.xk-footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.xk-footer h3{font-size:15px;color:var(--xk-text-1);margin-bottom:18px;letter-spacing:.02em}
.xk-footer-brand p{color:var(--xk-text-3);font-size:14px;margin-top:16px;max-width:280px;line-height:1.8}
.xk-footer-list{display:flex;flex-direction:column;gap:12px}
.xk-footer-list a,.xk-footer-list span{color:var(--xk-text-3);font-size:14px}
.xk-footer-list a:hover{color:var(--xk-primary)}
.xk-footer-bottom{
  border-top:1px solid var(--xk-line);padding:22px 0 32px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  color:var(--xk-text-3);font-size:13px;
}

/* modal */
.xk-modal-mask{
  position:fixed;inset:0;background:rgba(6,9,12,.72);z-index:1060;
  display:none;align-items:center;justify-content:center;padding:24px;
}
.xk-modal-mask.is-open{display:flex}
.xk-modal{
  width:100%;max-width:520px;background:var(--xk-surface);border:1px solid var(--xk-line-strong);
  border-radius:var(--xk-r-card);padding:28px;position:relative;max-height:90vh;overflow:auto;
  box-shadow:var(--xk-shadow-2);
}
.xk-modal h3{font-size:22px;margin-bottom:8px}
.xk-modal .sub{color:var(--xk-text-2);font-size:14px;margin-bottom:20px}
.xk-modal-close{
  position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:10px;
  background:transparent;border:1px solid var(--xk-line);color:var(--xk-text-2);cursor:pointer;
  font-size:18px;line-height:1;
}
.xk-modal-close:hover{border-color:var(--xk-primary);color:var(--xk-primary)}
body.xk-locked{overflow:hidden}

/* reveal */
.xk-reveal{opacity:0;transform:translateY(12px);transition:opacity var(--xk-t-slow) var(--xk-ease),transform var(--xk-t-slow) var(--xk-ease)}
.xk-reveal.is-in{opacity:1;transform:none}

@media (max-width:1399px){
  .xk-container{max-width:1200px}
}
@media (max-width:1199px){
  h1{font-size:44px}
  h2{font-size:32px}
  .xk-nav-links{display:none}
  .xk-menu-btn{display:inline-flex}
  .xk-search{max-width:none}
  .xk-overview{grid-template-columns:1fr;gap:40px}
  .xk-masonry{column-count:2}
  .xk-points{grid-template-columns:repeat(2,1fr)}
  .xk-cta-grid{grid-template-columns:1fr;gap:32px}
  .xk-footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:991px){
  .xk-nav-wrap{gap:16px}
  .xk-logo-text{font-size:16px}
}
@media (max-width:767px){
  body{font-size:16px}
  h1{font-size:32px}
  h2{font-size:26px}
  h3{font-size:20px}
  .xk-section{padding:56px 0}
  .xk-banner{padding:32px 0 48px}
  .xk-search{display:none}
  .xk-masonry{column-count:1}
  .xk-points{grid-template-columns:1fr}
  .xk-cta{padding:28px}
  .xk-form{padding:20px}
  .xk-footer-grid{grid-template-columns:1fr}
  .xk-modal-mask{padding:0;align-items:flex-end}
  .xk-modal{max-width:100%;border-radius:16px 16px 0 0;max-height:88vh}
  .xk-nav-wrap{height:64px}
  .xk-header.is-scrolled .xk-nav-wrap{height:60px}
}
@media (max-width:519px){
  .xk-container{padding:0 16px}
  .xk-filter{padding:16px}
  .xk-card{padding:16px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .xk-reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --xk-bg:#0A0E12;
  --xk-bg-2:#10161D;
  --xk-surface:#151D26;
  --xk-surface-hover:#1C2630;
  --xk-line:rgba(255,255,255,.08);
  --xk-line-strong:rgba(255,255,255,.16);
  --xk-text-1:#EEF3F7;
  --xk-text-2:#A7B4C0;
  --xk-text-3:#6C7A88;
  --xk-primary:#12B39B;
  --xk-primary-hover:#0E907E;
  --xk-primary-soft:rgba(18,179,155,.12);
  --xk-accent:#F0A93C;
  --xk-alert:#E4572E;
  --xk-inverse-bg:#F2F5F6;
  --xk-inverse-text:#0A0E12;
  --xk-radius-card:16px;
  --xk-radius-btn:10px;
  --xk-radius-input:12px;
  --xk-radius-img:12px;
  --xk-radius-pill:999px;
  --xk-shadow-1:0 1px 2px rgba(0,0,0,.30);
  --xk-shadow-2:0 18px 40px -18px rgba(0,0,0,.65);
  --xk-font:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --xk-font-num:"Barlow Condensed","Oswald","Helvetica Neue",Arial,sans-serif;
  --xk-ease:cubic-bezier(.2,.7,.2,1);
  --xk-dur:.42s;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;background:var(--xk-bg);color:var(--xk-text-1);font-family:var(--xk-font);font-size:17px;line-height:1.85;-webkit-font-smoothing:antialiased;}
img{display:block;max-width:100%;object-fit:cover;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.2;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--xk-primary);outline-offset:2px;}
.xk-container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1400px){.xk-container{max-width:1280px;}}

/* ---------- 按钮 ---------- */
.xk-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--xk-radius-btn);border:1px solid transparent;font-size:15px;font-weight:600;line-height:1;padding:13px 22px;cursor:pointer;white-space:nowrap;transition:background .25s var(--xk-ease),color .25s var(--xk-ease),border-color .25s var(--xk-ease),transform .25s var(--xk-ease);}
.xk-btn-primary{background:var(--xk-primary);color:#04231F;box-shadow:var(--xk-shadow-1);}
.xk-btn-primary:hover{background:var(--xk-primary-hover);color:#ffffff;transform:translateY(-1px);}
.xk-btn-ghost{background:transparent;border-color:var(--xk-line-strong);color:var(--xk-text-1);}
.xk-btn-ghost:hover{border-color:var(--xk-primary);color:var(--xk-primary);transform:translateY(-1px);}
.xk-btn-sm{padding:9px 16px;font-size:14px;}
.xk-btn-block{width:100%;}
.xk-link{color:var(--xk-primary);font-weight:600;position:relative;display:inline-flex;align-items:center;gap:6px;}
.xk-link::after{content:"";position:absolute;left:0;bottom:-3px;width:0;height:1px;background:var(--xk-primary);transition:width .2s var(--xk-ease);}
.xk-link:hover::after{width:100%;}

/* ---------- 头部与导航 ---------- */
.xk-header{position:sticky;top:0;z-index:90;background:rgba(10,14,18,.94);backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:border-color .3s var(--xk-ease);}
.xk-header.is-scrolled{border-bottom-color:var(--xk-line);}
.xk-nav-wrap{display:flex;align-items:center;gap:24px;height:76px;transition:height .3s var(--xk-ease);}
.xk-header.is-scrolled .xk-nav-wrap{height:64px;}
.xk-logo{display:inline-flex;align-items:center;gap:10px;color:var(--xk-text-1);flex-shrink:0;}
.xk-logo svg{color:var(--xk-primary);flex-shrink:0;}
.xk-logo-text{font-size:17px;font-weight:700;letter-spacing:-.02em;white-space:nowrap;}
.xk-search{display:flex;align-items:center;gap:10px;flex:1 1 auto;max-width:520px;margin:0 auto;padding:6px 6px 6px 16px;border:1px solid var(--xk-line);border-radius:var(--xk-radius-pill);background:var(--xk-surface);transition:border-color .25s var(--xk-ease),box-shadow .25s var(--xk-ease);}
.xk-search:focus-within{border-color:var(--xk-primary);box-shadow:0 0 0 3px var(--xk-primary-soft);}
.xk-search svg{color:var(--xk-text-3);flex-shrink:0;}
.xk-search-input{flex:1 1 auto;min-width:0;background:transparent;border:0;outline:none;color:var(--xk-text-1);font-size:15px;}
.xk-search-input::placeholder{color:var(--xk-text-3);}
.xk-search-btn{padding:9px 18px;font-size:14px;border-radius:var(--xk-radius-pill);}
.xk-search-mobile{display:none;}
.xk-nav-links{display:flex;align-items:center;gap:20px;flex-shrink:0;}
.xk-nav-link{position:relative;font-size:15px;color:var(--xk-text-2);padding:6px 0;transition:color .25s var(--xk-ease);white-space:nowrap;}
.xk-nav-link:hover{color:var(--xk-text-1);}
.xk-nav-link.is-active{color:var(--xk-text-1);}
.xk-nav-link.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;background:var(--xk-primary);}
.xk-menu-btn{display:none;align-items:center;justify-content:center;width:44px;height:44px;border-radius:var(--xk-radius-btn);border:1px solid var(--xk-line-strong);background:transparent;color:var(--xk-text-1);cursor:pointer;}
.xk-chips-row{display:flex;gap:8px;overflow-x:auto;padding:0 0 12px;scrollbar-width:none;}
.xk-chips-row::-webkit-scrollbar{display:none;}
.xk-chip{flex:0 0 auto;font-size:13px;padding:7px 16px;border-radius:var(--xk-radius-pill);border:1px solid var(--xk-line);background:var(--xk-surface);color:var(--xk-text-2);transition:all .25s var(--xk-ease);}
.xk-chip:hover{border-color:var(--xk-primary);color:var(--xk-text-1);}
.xk-chip.is-active{background:var(--xk-primary);border-color:var(--xk-primary);color:#04231F;font-weight:600;}

/* ---------- 通用区块 ---------- */
.xk-section{padding:96px 0;}
.xk-section-tight{padding:72px 0;}
.xk-section-alt{background:var(--xk-bg-2);border-top:1px solid var(--xk-line);border-bottom:1px solid var(--xk-line);}
.xk-eyebrow{font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--xk-accent);font-family:var(--xk-font-num);margin-bottom:12px;}
.xk-h2{font-size:40px;}
.xk-lead{color:var(--xk-text-2);font-size:17px;max-width:760px;}
.xk-section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:48px;}
.xk-divider{height:1px;background:var(--xk-line);border:0;margin:0;}

/* ---------- Banner ---------- */
.xk-banner{position:relative;overflow:hidden;border-bottom:1px solid var(--xk-line);background-image:linear-gradient(rgba(10,14,18,.80),rgba(10,14,18,.94)),url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;}
.xk-banner::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.35) 1px,transparent 1px);background-size:36px 36px;opacity:.18;pointer-events:none;}
.xk-banner-inner{position:relative;display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:48px;align-items:center;padding:72px 0 64px;}
.xk-crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--xk-text-3);margin-bottom:20px;}
.xk-crumbs a:hover{color:var(--xk-primary);}
.xk-crumbs .sep{opacity:.5;}
.xk-crumbs .current{color:var(--xk-text-1);}
.xk-banner h1{font-size:46px;line-height:1.15;margin-bottom:18px;}
.xk-banner h1 em{font-style:normal;color:var(--xk-primary);}
.xk-banner-lead{color:var(--xk-text-2);font-size:17px;max-width:620px;}
.xk-banner-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.xk-tag{display:inline-flex;align-items:center;gap:6px;font-size:13px;padding:6px 14px;border-radius:var(--xk-radius-pill);background:var(--xk-primary-soft);color:var(--xk-primary);border:1px solid rgba(18,179,155,.28);}
.xk-tag-accent{background:rgba(240,169,60,.12);color:var(--xk-accent);border-color:rgba(240,169,60,.3);}
.xk-banner-figure{margin:0;border-radius:var(--xk-radius-card);border:1px solid var(--xk-line);overflow:hidden;background:var(--xk-surface);}
.xk-banner-figure img{width:100%;height:100%;aspect-ratio:4/3;}
.xk-banner-figure figcaption{font-size:13px;color:var(--xk-text-3);padding:12px 16px;border-top:1px solid var(--xk-line);}

/* ---------- 概览 ---------- */
.xk-overview{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:56px;align-items:start;}
.xk-overview p{color:var(--xk-text-2);margin-bottom:24px;}
.xk-overview p:last-child{margin-bottom:0;}
.xk-overview strong{color:var(--xk-text-1);font-weight:600;}
.xk-stat-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:36px;padding-top:32px;border-top:1px solid var(--xk-line);}
.xk-stat-strip .num{font-family:var(--xk-font-num);font-size:34px;font-weight:600;color:var(--xk-primary);line-height:1;}
.xk-stat-strip .lab{font-size:14px;color:var(--xk-text-3);margin-top:6px;}
.xk-figure-plain{margin:0;border-radius:var(--xk-radius-card);border:1px solid var(--xk-line);overflow:hidden;background:var(--xk-surface);}
.xk-figure-plain img{width:100%;aspect-ratio:16/11;}
.xk-figure-plain figcaption{padding:14px 18px;font-size:13px;color:var(--xk-text-3);border-top:1px solid var(--xk-line);}

/* ---------- 双栏 Q&A ---------- */
.xk-qa-list{border-top:1px solid var(--xk-line);}
.xk-qa-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.3fr);gap:40px;padding:28px 4px;border-bottom:1px solid var(--xk-line);transition:background .25s var(--xk-ease);}
.xk-qa-row:hover{background:rgba(255,255,255,.02);}
.xk-qa-q{display:flex;gap:14px;align-items:flex-start;}
.xk-qa-num{font-family:var(--xk-font-num);font-size:17px;font-weight:600;color:var(--xk-accent);letter-spacing:.06em;padding-top:3px;}
.xk-qa-q h3{font-size:18px;font-weight:600;line-height:1.5;}
.xk-qa-a{color:var(--xk-text-2);font-size:16px;}

/* ---------- 卡片网格 ---------- */
.xk-card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.xk-card{display:flex;flex-direction:column;background:var(--xk-surface);border:1px solid var(--xk-line);border-radius:var(--xk-radius-card);overflow:hidden;box-shadow:var(--xk-shadow-1);transition:border-color .3s var(--xk-ease),transform .3s var(--xk-ease),box-shadow .3s var(--xk-ease);}
.xk-card:hover{border-color:rgba(18,179,155,.4);transform:translateY(-2px);box-shadow:var(--xk-shadow-2);}
.xk-card-media{overflow:hidden;border-bottom:1px solid var(--xk-line);}
.xk-card-media img{width:100%;aspect-ratio:16/9;transition:transform .3s var(--xk-ease);}
.xk-card:hover .xk-card-media img{transform:scale(1.03);}
.xk-card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto;}
.xk-card-body h3{font-size:19px;}
.xk-card-body p{color:var(--xk-text-2);font-size:15px;}
.xk-card-foot{margin-top:auto;}

/* ---------- 编号要点 ---------- */
.xk-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.xk-point{position:relative;padding:24px 24px 24px 28px;border:1px solid var(--xk-line);border-radius:var(--xk-radius-card);background:var(--xk-surface);}
.xk-point::before{content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;border-radius:3px;background:var(--xk-primary);}
.xk-point .idx{font-family:var(--xk-font-num);font-size:26px;font-weight:600;color:var(--xk-accent);letter-spacing:.06em;}
.xk-point h3{font-size:17px;margin:8px 0 8px;}
.xk-point p{font-size:15px;color:var(--xk-text-2);}

/* ---------- 表单 ---------- */
.xk-form-band{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:48px;align-items:start;}
.xk-form-panel{background:var(--xk-surface);border:1px solid var(--xk-line);border-radius:var(--xk-radius-card);padding:32px;box-shadow:var(--xk-shadow-2);}
.xk-field{margin-bottom:18px;}
.xk-field label{display:block;font-size:14px;color:var(--xk-text-2);margin-bottom:8px;}
.xk-input,.xk-select,.xk-textarea{width:100%;background:var(--xk-bg-2);border:1px solid var(--xk-line);border-radius:var(--xk-radius-input);padding:13px 16px;color:var(--xk-text-1);outline:none;transition:border-color .25s var(--xk-ease),box-shadow .25s var(--xk-ease);}
.xk-input:focus,.xk-select:focus,.xk-textarea:focus{border-color:var(--xk-primary);box-shadow:0 0 0 3px var(--xk-primary-soft);}
.xk-textarea{min-height:110px;resize:vertical;}
.xk-select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--xk-text-3) 50%),linear-gradient(135deg,var(--xk-text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 50%,calc(100% - 14px) 50%;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.xk-check{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--xk-text-2);}
.xk-check input{margin-top:5px;width:16px;height:16px;accent-color:var(--xk-primary);}
.xk-form-note{font-size:13px;color:var(--xk-text-3);margin-top:14px;line-height:1.7;}
.xk-form-note a{color:var(--xk-primary);border-bottom:1px solid rgba(18,179,155,.4);}
.xk-form-msg{display:none;font-size:14px;margin-top:14px;padding:12px 14px;border-radius:var(--xk-radius-input);border:1px solid var(--xk-line);color:var(--xk-text-2);}
.xk-form-msg.is-ok{display:block;border-color:rgba(18,179,155,.4);color:var(--xk-primary);background:var(--xk-primary-soft);}
.xk-form-msg.is-err{display:block;border-color:rgba(228,87,46,.5);color:var(--xk-alert);background:rgba(228,87,46,.08);}
.xk-contact-list{margin-top:28px;border-top:1px solid var(--xk-line);padding-top:24px;display:grid;gap:14px;}
.xk-contact-list li{display:flex;gap:12px;font-size:15px;color:var(--xk-text-2);}
.xk-contact-list span:first-child{color:var(--xk-text-3);min-width:88px;}

/* ---------- FAQ 双栏卡 ---------- */
.xk-faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.xk-faq-item{border:1px solid var(--xk-line);border-radius:var(--xk-radius-card);background:var(--xk-surface);padding:26px;transition:border-color .3s var(--xk-ease);}
.xk-faq-item:hover{border-color:rgba(18,179,155,.35);}
.xk-faq-item h3{font-size:17px;margin-bottom:12px;display:flex;gap:10px;align-items:flex-start;}
.xk-faq-item h3::before{content:"Q";font-family:var(--xk-font-num);font-weight:600;color:var(--xk-primary);font-size:16px;}
.xk-faq-item p{color:var(--xk-text-2);font-size:15px;}

/* ---------- CTA 带 ---------- */
.xk-cta-band{position:relative;overflow:hidden;border-top:1px solid var(--xk-line);background-image:linear-gradient(rgba(10,14,18,.78),rgba(10,14,18,.9)),url('/assets/images/backpic/back-3.png');background-size:cover;background-position:center;}
.xk-cta-inner{position:relative;padding:80px 0;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.xk-cta-inner h2{font-size:32px;margin-bottom:10px;}
.xk-cta-inner p{color:var(--xk-text-2);max-width:560px;}
.xk-cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.xk-footer{background:#070A0D;border-top:1px solid var(--xk-line);padding:64px 0 28px;}
.xk-footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.xk-footer-brand p{color:var(--xk-text-3);font-size:15px;margin-top:16px;max-width:320px;}
.xk-footer h3{font-size:15px;color:var(--xk-text-1);margin-bottom:18px;font-weight:600;}
.xk-footer-list{display:grid;gap:12px;}
.xk-footer-list a,.xk-footer-list span{font-size:15px;color:var(--xk-text-3);transition:color .25s var(--xk-ease);}
.xk-footer-list a:hover{color:var(--xk-primary);}
.xk-footer-bottom{margin-top:48px;padding-top:24px;border-top:1px solid var(--xk-line);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--xk-text-3);}

/* ---------- 弹层 ---------- */
.xk-modal{position:fixed;inset:0;z-index:120;display:none;align-items:center;justify-content:center;padding:24px;background:rgba(6,9,12,.72);}
.xk-modal.is-open{display:flex;}
.xk-modal-panel{position:relative;width:100%;max-width:520px;background:var(--xk-surface);border:1px solid var(--xk-line-strong);border-radius:var(--xk-radius-card);padding:32px;box-shadow:var(--xk-shadow-2);max-height:88vh;overflow:auto;}
.xk-modal-panel h2{font-size:22px;margin-bottom:8px;}
.xk-modal-panel .sub{font-size:14px;color:var(--xk-text-3);margin-bottom:22px;}
.xk-modal-close{position:absolute;top:14px;right:14px;width:38px;height:38px;border-radius:10px;border:1px solid var(--xk-line);background:transparent;color:var(--xk-text-2);cursor:pointer;font-size:18px;line-height:1;transition:all .25s var(--xk-ease);}
.xk-modal-close:hover{border-color:var(--xk-primary);color:var(--xk-primary);}
body.xk-locked{overflow:hidden;}

/* ---------- 入场动画 ---------- */
.xk-reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--xk-ease),transform .42s var(--xk-ease);}
.xk-reveal.is-visible{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .xk-card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .xk-points{grid-template-columns:repeat(2,minmax(0,1fr));}
  .xk-banner h1{font-size:40px;}
}
@media (max-width:991px){
  body{font-size:16px;}
  .xk-search{display:none;}
  .xk-search-mobile{display:flex;width:100%;max-width:none;margin:0 0 8px;}
  .xk-menu-btn{display:inline-flex;margin-left:auto;}
  .xk-nav-links{position:absolute;left:0;right:0;top:100%;display:none;flex-direction:column;align-items:stretch;gap:6px;padding:20px 24px 26px;background:var(--xk-bg-2);border-bottom:1px solid var(--xk-line);box-shadow:var(--xk-shadow-2);}
  body.xk-menu-open .xk-nav-links{display:flex;}
  .xk-nav-link{padding:12px 0;border-bottom:1px solid var(--xk-line);}
  .xk-nav-link.is-active::after{display:none;}
  .xk-nav-links .xk-btn{margin-top:14px;width:100%;}
  .xk-chips-row{display:none;}
  .xk-banner-inner{grid-template-columns:1fr;gap:32px;padding:56px 0 48px;}
  .xk-banner h1{font-size:34px;}
  .xk-overview{grid-template-columns:1fr;gap:36px;}
  .xk-qa-row{grid-template-columns:1fr;gap:12px;}
  .xk-faq-grid{grid-template-columns:1fr;}
  .xk-form-band{grid-template-columns:1fr;gap:32px;}
  .xk-section{padding:72px 0;}
  .xk-h2{font-size:30px;}
  .xk-footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}
@media (max-width:767px){
  .xk-section{padding:56px 0;}
  .xk-section-head{flex-direction:column;align-items:flex-start;margin-bottom:32px;}
  .xk-h2{font-size:26px;}
  .xk-card-grid{grid-template-columns:1fr;}
  .xk-points{grid-template-columns:1fr;}
  .xk-stat-strip{grid-template-columns:1fr 1fr;}
  .xk-banner h1{font-size:30px;}
  .xk-cta-inner{padding:56px 0;}
  .xk-cta-inner h2{font-size:24px;}
  .xk-modal{align-items:flex-end;padding:0;}
  .xk-modal-panel{max-width:none;border-radius:20px 20px 0 0;max-height:90vh;}
}
@media (max-width:520px){
  .xk-container{padding:0 16px;}
  .xk-logo-text{font-size:15px;}
  .xk-banner h1{font-size:26px;}
  .xk-form-panel{padding:22px;}
  .xk-footer-grid{grid-template-columns:1fr;}
  .xk-footer-bottom{flex-direction:column;gap:8px;}
  .xk-btn{width:100%;}
  .xk-search .xk-btn{width:auto;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;}
  .xk-reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}