/* roulang page: index */
:root{
  --brand-1:#16C79A;
  --brand-2:#7C5CFF;
  --brand-grad:linear-gradient(120deg,#16C79A 0%,#2ED3B7 45%,#7C5CFF 100%);
  --accent:#FFB020;
  --accent-2:#FF6A5E;
  --ink:#14161C;
  --ink-2:#5A6070;
  --line:#E6E8EF;
  --bg:#F5F7FA;
  --surface:#FFFFFF;
  --surface-2:#EEF1F7;
  --dark:#12141A;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-xl:32px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(20,22,28,.05);
  --sh-2:0 10px 28px rgba(20,22,28,.08);
  --sh-3:0 18px 44px rgba(124,92,255,.16);
  --side-w:248px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button,input{font-family:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{list-style:none;padding:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.kh-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- 容器 ---------- */
.kh-container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}

/* ---------- 左侧 App Shell ---------- */
.kh-side{
  position:fixed;top:0;left:0;bottom:0;
  width:var(--side-w);
  background:var(--surface);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:22px 16px 20px;
  z-index:1040;
  overflow-y:auto;
}
.kh-logo{display:flex;align-items:center;gap:10px;padding:0 6px 20px}
.kh-logo-mark{
  width:38px;height:38px;flex:none;border-radius:12px;background:var(--brand-grad);
  display:grid;place-items:center;color:#fff;font-size:17px;font-weight:800;
  box-shadow:0 6px 16px rgba(22,199,154,.28);
}
.kh-logo-text{font-size:16px;font-weight:700;letter-spacing:-.01em;line-height:1.3}
.kh-logo-sub{display:block;font-size:11px;font-weight:500;color:var(--ink-2);letter-spacing:.06em}

.kh-nav{display:flex;flex-direction:column;gap:6px;flex:1}
.kh-nav-label{font-size:12px;letter-spacing:.08em;color:var(--ink-2);padding:10px 12px 4px}
.kh-nav-link{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:12px;
  font-size:15px;color:var(--ink);
  transition:background .2s ease,color .2s ease;
}
.kh-nav-link i{width:20px;text-align:center;font-size:15px;color:var(--ink-2);transition:color .2s ease}
.kh-nav-link:hover{background:var(--surface-2)}
.kh-nav-link.active{
  color:var(--brand-1);font-weight:600;
  background:linear-gradient(90deg,rgba(22,199,154,.12),rgba(124,92,255,.06));
}
.kh-nav-link.active i{color:var(--brand-1)}
.kh-nav-link.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:3px;background:var(--brand-grad);
}
.kh-side-card{
  margin-top:18px;padding:16px;border-radius:var(--r-md);
  background:var(--surface-2);border:1px solid var(--line);
}
.kh-side-card h4{font-size:14px;font-weight:700;margin-bottom:6px}
.kh-side-card p{font-size:12.5px;color:var(--ink-2);line-height:1.7;margin-bottom:12px}

/* ---------- 主内容区 ---------- */
.kh-main{position:relative}
@media(min-width:992px){
  body{padding-left:var(--side-w)}
  .kh-main{padding-left:0}
}
@media(min-width:1400px){
  :root{--side-w:264px}
}

/* ---------- 顶部工具条 ---------- */
.kh-topbar{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--line);
}
.kh-topbar-inner{
  max-width:1240px;margin:0 auto;padding:0 32px;
  height:64px;display:flex;align-items:center;gap:16px;
}
.kh-crumb{font-size:13px;color:var(--ink-2);display:flex;align-items:center;gap:8px;min-width:0}
.kh-crumb a{color:var(--ink-2)}
.kh-crumb a:hover{color:var(--brand-1)}
.kh-crumb .sep{opacity:.5}
.kh-crumb .now{color:var(--ink);font-weight:600}
.kh-topbar-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.kh-search{
  display:flex;align-items:center;gap:8px;
  height:40px;width:250px;padding:0 14px;
  border-radius:var(--r-pill);background:var(--surface);border:1px solid var(--line);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.kh-search:focus-within{border-color:var(--brand-1);box-shadow:0 0 0 3px rgba(22,199,154,.14)}
.kh-search i{color:var(--ink-2);font-size:13px}
.kh-search input{border:0;outline:0;background:transparent;width:100%;font-size:14px;color:var(--ink)}
.kh-search input::placeholder{color:#9AA1B1}

/* ---------- 按钮 ---------- */
.kh-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.kh-btn-primary{background:var(--brand-grad);color:#fff;box-shadow:0 8px 22px rgba(22,199,154,.25)}
.kh-btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-3);color:#fff}
.kh-btn-primary:active{transform:scale(.98)}
.kh-btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.kh-btn-ghost:hover{border-color:var(--brand-1);color:var(--brand-1);background:rgba(22,199,154,.06)}
.kh-btn-ghost:active{transform:scale(.98)}
.kh-btn-light{background:#fff;color:var(--ink);box-shadow:var(--sh-2)}
.kh-btn-light:hover{transform:translateY(-2px);color:var(--brand-1)}
.kh-btn-sm{height:40px;padding:0 18px;font-size:14px}
.kh-btn-block{width:100%}
.kh-btn:disabled,.kh-btn.disabled{opacity:.45;cursor:not-allowed;transform:none}
.kh-link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-1);
  position:relative;
}
.kh-link-more::after{
  content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;background:var(--brand-grad);
  transition:width .25s ease;border-radius:2px;
}
.kh-link-more:hover::after{width:100%}

/* ---------- 图标按钮（移动端） ---------- */
.kh-icon-btn{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;
  display:inline-grid;place-items:center;color:var(--ink);font-size:15px;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.kh-icon-btn:hover{color:var(--brand-1);border-color:var(--brand-1);background:rgba(22,199,154,.06)}

/* ---------- 移动端顶栏 ---------- */
.kh-mobile-bar{
  position:sticky;top:0;z-index:1035;
  height:56px;padding:0 16px;
  display:flex;align-items:center;gap:12px;
  background:#fff;border-bottom:1px solid var(--line);
}
.kh-mobile-logo{font-size:15px;font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 抽屉 ---------- */
.kh-drawer{width:288px !important;background:var(--surface);border-right:1px solid var(--line)}
.kh-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:16px 18px}
.kh-drawer-title{font-size:16px;font-weight:700}
.kh-drawer .offcanvas-body{padding:18px}
.kh-drawer .btn-close{box-shadow:none}

/* ---------- Hero ---------- */
.kh-hero{
  position:relative;overflow:hidden;
  background:var(--dark);color:#fff;
  padding:64px 0 72px;
}
.kh-hero::before{
  content:"";position:absolute;left:-220px;top:-380px;width:900px;height:900px;
  background:radial-gradient(circle,rgba(22,199,154,.30),transparent 62%);
  pointer-events:none;
}
.kh-hero::after{
  content:"";position:absolute;right:-200px;bottom:-360px;width:780px;height:780px;
  background:radial-gradient(circle,rgba(124,92,255,.32),transparent 62%);
  pointer-events:none;
}
.kh-hero .kh-container{position:relative;z-index:1}
.kh-hero-grid{display:grid;grid-template-columns:340px 1fr;gap:56px;align-items:center}
.kh-hero-visual-wrap{position:relative;width:100%;max-width:340px}
.kh-hero-visual-wrap::before{
  content:"";position:absolute;left:-12px;top:-12px;width:78px;height:78px;
  border-radius:26px 0 0 0;background:var(--brand-grad);opacity:.9;
}
.kh-hero-visual{
  position:relative;width:100%;aspect-ratio:9/16;
  border-radius:var(--r-xl);overflow:hidden;background:#1B1E27;
  box-shadow:0 26px 60px rgba(0,0,0,.46);
}
.kh-hero-visual img{width:100%;height:100%;object-fit:cover}
.kh-hero-visual::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-xl);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.14);pointer-events:none;
}
.kh-hero-live{
  position:absolute;left:14px;top:14px;
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(18,20,26,.62);color:#fff;font-size:12px;font-weight:600;
}
.kh-hero-live .dot{width:7px;height:7px;border-radius:50%;background:var(--accent-2);box-shadow:0 0 0 4px rgba(255,106,94,.22)}
.kh-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-1);letter-spacing:.02em;
}
.kh-hero h1{
  font-size:clamp(30px,4.2vw,52px);line-height:1.15;font-weight:800;
  letter-spacing:-.02em;margin:18px 0 0;color:#fff;max-width:15em;
}
.kh-hero-sub{font-size:16.5px;color:rgba(255,255,255,.74);line-height:1.85;margin-top:18px;max-width:34em}
.kh-hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.kh-hero-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.kh-badge-stat{
  display:flex;align-items:baseline;gap:8px;
  padding:9px 18px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);
}
.kh-badge-stat b{
  font-size:21px;font-weight:800;font-variant-numeric:tabular-nums;
  background:var(--brand-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.kh-badge-stat span{font-size:12.5px;color:rgba(255,255,255,.72)}

/* ---------- 板块骨架 ---------- */
.kh-section{padding:72px 0}
.kh-section-alt{background:var(--surface)}
.kh-sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  flex-wrap:wrap;margin-bottom:28px;
}
.kh-h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.25;letter-spacing:-.01em}
.kh-sec-sub{font-size:15px;color:var(--ink-2);margin-top:10px;max-width:660px}
.kh-h3{font-size:19px;font-weight:600;line-height:1.4}

/* ---------- 热播片段卡带 ---------- */
.kh-reel{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:10px;scrollbar-width:none;
}
.kh-reel::-webkit-scrollbar{display:none}
.kh-reel-item{flex:0 0 252px;scroll-snap-align:start}
@media(min-width:992px){
  .kh-reel{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;overflow:visible;padding-bottom:0}
  .kh-reel-item{flex:none}
}
.kh-reel-card{display:block;border-radius:var(--r-lg);transition:transform .2s cubic-bezier(.2,.7,.3,1)}
.kh-reel-card:hover{transform:translateY(-4px)}
.kh-reel-cover{
  position:relative;aspect-ratio:9/16;border-radius:var(--r-lg);
  overflow:hidden;background:var(--surface-2);
}
.kh-reel-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.kh-reel-card:hover .kh-reel-cover img{transform:scale(1.04)}
.kh-pill-cat{
  position:absolute;left:12px;top:12px;padding:4px 12px;border-radius:var(--r-pill);
  background:var(--brand-grad);color:#fff;font-size:12px;font-weight:600;
}
.kh-pill-time{
  position:absolute;right:12px;top:12px;padding:4px 10px;border-radius:var(--r-sm);
  background:rgba(18,20,26,.72);color:#fff;font-size:12px;font-variant-numeric:tabular-nums;
}
.kh-reel-body{padding:14px 2px 0}
.kh-reel-title{
  font-size:16px;font-weight:600;line-height:1.5;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.kh-reel-card:hover .kh-reel-title{color:var(--brand-1)}
.kh-reel-meta{
  display:flex;gap:16px;margin-top:10px;font-size:13px;color:var(--ink-2);
  font-variant-numeric:tabular-nums;
}
.kh-reel-meta i{margin-right:5px;font-size:12px}

/* ---------- 观赛清单 ---------- */
.kh-list{margin-top:4px}
.kh-list-item{
  display:flex;align-items:center;gap:22px;
  padding:18px 10px;border-bottom:1px solid var(--line);border-radius:var(--r-sm);
  transition:background .2s ease;
}
.kh-list-item:first-child{border-top:1px solid var(--line)}
.kh-list-item:hover{background:var(--surface-2)}
.kh-list-num{
  flex:none;width:58px;font-size:36px;font-weight:800;line-height:1;font-variant-numeric:tabular-nums;
  background:var(--brand-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  transition:transform .2s ease;
}
.kh-list-item:hover .kh-list-num{transform:translateX(4px)}
.kh-list-main{flex:1;min-width:0}
.kh-list-title{font-size:17px;font-weight:600;line-height:1.5;color:var(--ink)}
.kh-list-item:hover .kh-list-title{color:var(--brand-1)}
.kh-list-desc{font-size:14px;color:var(--ink-2);line-height:1.75;margin-top:6px}
.kh-list-thumb{
  flex:none;width:96px;height:96px;border-radius:var(--r-md);overflow:hidden;background:var(--surface-2);
}
.kh-list-thumb img{width:100%;height:100%;object-fit:cover}

/* ---------- 筛选 tab ---------- */
.kh-tabs{
  display:flex;gap:26px;border-bottom:1px solid var(--line);margin-bottom:28px;
  overflow-x:auto;scrollbar-width:none;
}
.kh-tabs::-webkit-scrollbar{display:none}
.kh-tab{
  position:relative;flex:none;padding:10px 0;border:0;background:none;cursor:pointer;
  font-size:15px;color:var(--ink-2);white-space:nowrap;transition:color .2s ease;
}
.kh-tab:hover{color:var(--ink)}
.kh-tab.active{color:var(--ink);font-weight:600}
.kh-tab.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:3px;border-radius:3px;background:var(--brand-grad);
}

/* ---------- 资讯列表卡 ---------- */
.kh-post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.kh-post-card{
  display:flex;flex-direction:column;height:100%;
  padding:22px;border-radius:var(--r-md);background:var(--surface);
  border:1px solid var(--line);
  transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s ease,border-color .2s ease;
}
.kh-post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(22,199,154,.35)}
.kh-post-cat{
  align-self:flex-start;padding:4px 11px;border-radius:var(--r-pill);margin-bottom:14px;
  font-size:12px;font-weight:600;color:var(--brand-1);background:rgba(22,199,154,.1);
}
.kh-post-title{
  font-size:18px;font-weight:600;line-height:1.5;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.kh-post-card:hover .kh-post-title{color:var(--brand-1)}
.kh-post-summary{
  font-size:14px;color:var(--ink-2);line-height:1.8;margin-top:10px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.kh-post-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--ink-2);font-variant-numeric:tabular-nums;
}
.kh-post-foot .read{color:var(--brand-1);font-weight:600;display:inline-flex;align-items:center;gap:5px}
.kh-post-foot .read:hover{text-decoration:underline}

.kh-empty{
  grid-column:1/-1;min-height:220px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  text-align:center;color:var(--ink-2);font-size:15px;
}
.kh-empty i{font-size:48px;color:#C7CCDA}
.kh-list-foot{display:flex;justify-content:center;margin-top:34px}

/* ---------- 口碑横滑 ---------- */
.kh-voices{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:10px;scrollbar-width:none;
}
.kh-voices::-webkit-scrollbar{display:none}
.kh-voice{
  flex:0 0 300px;scroll-snap-align:start;
  padding:20px;border-radius:var(--r-lg);
  background:var(--surface);border:1px solid var(--line);
  transition:transform .2s ease,box-shadow .2s ease;
}
.kh-voice:hover{transform:translateY(-4px);box-shadow:var(--sh-1)}
.kh-voice-top{display:flex;align-items:center;gap:12px}
.kh-avatar{
  width:40px;height:40px;flex:none;border-radius:50%;overflow:hidden;background:var(--surface-2);
}
.kh-avatar img{width:100%;height:100%;object-fit:cover}
.kh-voice-name{font-size:14px;font-weight:600;line-height:1.4}
.kh-voice-role{font-size:12px;color:var(--ink-2)}
.kh-voice-badge{
  margin-left:auto;padding:3px 9px;border-radius:var(--r-pill);
  font-size:11px;font-weight:600;color:#8A6100;background:rgba(255,176,32,.18);
}
.kh-voice-text{font-size:14px;color:var(--ink-2);line-height:1.8;margin-top:14px}

/* ---------- 数据徽章组 ---------- */
.kh-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.kh-metric{
  display:flex;align-items:center;gap:14px;
  padding:22px;border-radius:var(--r-lg);
  background:var(--surface);border:1px solid var(--line);
  transition:transform .2s ease,box-shadow .2s ease;
}
.kh-metric:hover{transform:translateY(-4px);box-shadow:var(--sh-1)}
.kh-metric-icon{
  width:46px;height:46px;flex:none;border-radius:14px;display:grid;place-items:center;
  font-size:18px;color:#fff;background:var(--brand-grad);
}
.kh-metric-icon.v2{background:linear-gradient(120deg,#7C5CFF,#A98CFF)}
.kh-metric-icon.v3{background:linear-gradient(120deg,#FFB020,#FFD37A);color:#5A3D00}
.kh-metric-icon.v4{background:linear-gradient(120deg,#FF6A5E,#FF9F96)}
.kh-metric b{display:block;font-size:26px;font-weight:800;line-height:1.1;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.kh-metric small{font-size:12.5px;color:var(--ink-2)}

/* ---------- FAQ ---------- */
.kh-faq{max-width:900px}
.kh-faq .accordion-item{
  border:1px solid var(--line);border-radius:var(--r-md) !important;
  background:var(--surface);margin-bottom:12px;overflow:hidden;
}
.kh-faq .accordion-button{
  position:relative;background:var(--surface);color:var(--ink);
  font-size:16px;font-weight:600;padding:18px 52px 18px 22px;
  box-shadow:none;border-radius:var(--r-md) !important;
}
.kh-faq .accordion-button:not(.collapsed){color:var(--brand-1);background:rgba(22,199,154,.05)}
.kh-faq .accordion-button::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;
  background:var(--brand-grad);opacity:0;transition:opacity .2s ease;
}
.kh-faq .accordion-button:not(.collapsed)::before{opacity:1}
.kh-faq .accordion-button::after{
  display:flex;align-items:center;justify-content:center;
  width:22px;height:22px;right:20px;
  background-image:none;content:"+";
  font-size:18px;font-weight:600;color:var(--brand-1);position:absolute;line-height:1;
}
.kh-faq .accordion-button:not(.collapsed)::after{content:"–"}
.kh-faq .accordion-button:focus{box-shadow:none;border-color:transparent}
.kh-faq .accordion-body{padding:4px 22px 22px;font-size:15px;color:var(--ink-2);line-height:1.85}

/* ---------- CTA 带 ---------- */
.kh-cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);padding:42px 44px;
  background:var(--brand-grad);color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.kh-cta-band::after{
  content:"";position:absolute;right:-60px;top:-70px;width:280px;height:280px;border-radius:50%;
  background:rgba(255,255,255,.14);pointer-events:none;
}
.kh-cta-band h2{font-size:clamp(20px,2.4vw,28px);font-weight:700;line-height:1.3;position:relative;z-index:1}
.kh-cta-band p{font-size:15px;color:rgba(255,255,255,.86);margin-top:8px;position:relative;z-index:1}
.kh-cta-band .kh-btn{position:relative;z-index:1}

/* ---------- 页脚 ---------- */
.kh-footer{position:relative;background:var(--dark);color:#C9CDDA;padding:56px 0 0;margin-top:0}
.kh-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--brand-grad)}
.kh-footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px}
.kh-footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.kh-footer-brand .kh-logo-mark{width:34px;height:34px;font-size:15px}
.kh-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.kh-footer p{font-size:13.5px;line-height:1.85;color:#9BA2B4}
.kh-footer-links a{display:block;font-size:14px;color:#C9CDDA;padding:5px 0}
.kh-footer-links a:hover{color:#fff;text-decoration:underline}
.kh-footer-bottom{
  margin-top:42px;padding:20px 0;border-top:1px solid rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8D93A6;
}
.kh-footer-bottom a{color:#8D93A6}
.kh-footer-bottom a:hover{color:#fff}

/* ---------- 移动端吸附 CTA ---------- */
.kh-sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:1032;
  display:none;align-items:center;gap:12px;
  padding:10px 16px;background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -6px 20px rgba(20,22,28,.06);
}
.kh-sticky-cta span{font-size:13px;color:var(--ink-2);line-height:1.5}
.kh-sticky-cta .kh-btn{margin-left:auto;flex:none}

/* ---------- 响应式 ---------- */
@media(max-width:1199px){
  .kh-post-grid{grid-template-columns:repeat(2,1fr)}
  .kh-metrics{grid-template-columns:repeat(2,1fr)}
  .kh-hero-grid{grid-template-columns:300px 1fr;gap:40px}
  .kh-hero-visual-wrap{max-width:300px}
}
@media(max-width:991px){
  .kh-section{padding:56px 0}
  .kh-container{padding:0 24px}
  .kh-topbar-inner{padding:0 24px;height:58px}
  .kh-search{display:none}
  .kh-hero{padding:44px 0 56px}
  .kh-hero-grid{grid-template-columns:1fr;gap:34px}
  .kh-hero-visual-wrap{max-width:260px}
  .kh-hero-visual{aspect-ratio:3/4}
  .kh-hero h1{font-size:clamp(28px,7vw,38px)}
  .kh-hero-cta{flex-direction:column;align-items:stretch}
  .kh-hero-cta .kh-btn{width:100%}
  .kh-cta-band{flex-direction:column;align-items:flex-start;padding:32px 26px}
  .kh-footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .kh-sticky-cta{display:flex}
  .kh-main{padding-bottom:78px}
  .kh-faq .accordion-button{font-size:15px;padding:16px 48px 16px 18px}
}
@media(max-width:575px){
  .kh-section{padding:40px 0}
  .kh-container{padding:0 16px}
  .kh-topbar-inner{padding:0 16px}
  .kh-post-grid{grid-template-columns:1fr;gap:18px}
  .kh-metrics{grid-template-columns:1fr}
  .kh-hero-visual-wrap{max-width:220px}
  .kh-list-thumb{width:72px;height:72px}
  .kh-list-num{width:44px;font-size:28px}
  .kh-list-item{gap:14px;padding:16px 4px}
  .kh-list-desc{display:none}
  .kh-footer-grid{grid-template-columns:1fr}
  .kh-footer-bottom{flex-direction:column;align-items:flex-start}
  .kh-voice{flex:0 0 268px}
  .kh-reel-item{flex:0 0 224px}
  .kh-cta-band{padding:26px 20px}
}

/* roulang page: article */
:root{
  --brand-1:#16C79A;
  --brand-2:#7C5CFF;
  --brand-grad:linear-gradient(120deg,#16C79A 0%,#2ED3B7 45%,#7C5CFF 100%);
  --accent:#FFB020;
  --accent-2:#FF6A5E;
  --ink:#14161C;
  --ink-2:#5A6070;
  --line:#E6E8EF;
  --bg:#F5F7FA;
  --surface:#FFFFFF;
  --surface-2:#EEF1F7;
  --dark:#12141A;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-xl:32px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(20,22,28,.05);
  --sh-2:0 10px 28px rgba(20,22,28,.08);
  --sh-3:0 18px 44px rgba(124,92,255,.16);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --side-w:248px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.7;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,figure,blockquote{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.kh-num{font-variant-numeric:tabular-nums;}

/* 布局骨架 */
.kh-shell{min-height:100vh;}
.kh-side{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
  background:var(--surface);border-right:1px solid var(--line);
  padding:20px 16px;display:flex;flex-direction:column;
  z-index:1040;overflow-y:auto;
  transition:transform .28s cubic-bezier(.2,.7,.3,1);
}
.kh-main{margin-left:var(--side-w);min-width:0;display:flex;flex-direction:column;min-height:100vh;}
.kh-container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;}
.kh-overlay{
  position:fixed;inset:0;background:rgba(18,20,26,.5);
  opacity:0;visibility:hidden;transition:opacity .25s ease;
  z-index:1035;
}
.kh-overlay.show{opacity:1;visibility:visible;}

/* 品牌与导航 */
.kh-brand{display:flex;align-items:center;gap:12px;padding:6px 6px 20px;border-bottom:1px solid var(--line);}
.kh-logo-mark{
  width:42px;height:42px;border-radius:14px;background:var(--brand-grad);
  color:#fff;font-weight:800;font-size:20px;display:grid;place-items:center;
  box-shadow:0 8px 20px rgba(22,199,154,.28);flex:none;line-height:1;
}
.kh-logo-text{font-size:17px;font-weight:700;letter-spacing:-.01em;line-height:1.25;}
.kh-nav{display:flex;flex-direction:column;gap:4px;margin-top:22px;}
.kh-nav-label{font-size:12px;letter-spacing:.08em;color:var(--ink-2);margin:0 0 8px 10px;}
.kh-nav-link{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:12px;
  font-size:15px;color:var(--ink);
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.kh-nav-link i{width:20px;text-align:center;font-size:16px;color:var(--ink-2);transition:color .2s ease;}
.kh-nav-link:hover{background:var(--surface-2);}
.kh-nav-link.active{
  color:var(--brand-1);font-weight:600;
  background:linear-gradient(90deg,rgba(22,199,154,.14),rgba(124,92,255,.06));
}
.kh-nav-link.active i{color:var(--brand-1);}
.kh-nav-link.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:3px;background:var(--brand-grad);
}
.kh-side-card{
  margin-top:auto;position:relative;overflow:hidden;
  background:var(--dark);color:#fff;border-radius:var(--r-md);
  padding:20px;margin-top:32px;
}
.kh-side-card::after{
  content:"";position:absolute;right:-40px;top:-40px;width:140px;height:140px;
  background:radial-gradient(circle,rgba(22,199,154,.5),transparent 68%);
}
.kh-side-card-title{font-size:15px;font-weight:700;margin:0 0 8px;position:relative;z-index:1;}
.kh-side-card-text{font-size:13px;line-height:1.7;color:rgba(255,255,255,.72);margin:0 0 16px;position:relative;z-index:1;}
.kh-side-card .kh-btn{position:relative;z-index:1;width:100%;}

/* 顶部栏与工具条 */
.kh-topbar{
  display:none;position:sticky;top:0;z-index:1030;height:56px;
  align-items:center;gap:12px;padding:0 16px;
  background:rgba(255,255,255,.94);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.kh-topbar .kh-logo-text{font-size:15px;}
.kh-topbar .kh-logo-mark{width:34px;height:34px;border-radius:11px;font-size:16px;}
.kh-icon-btn{
  width:40px;height:40px;border-radius:12px;flex:none;
  display:grid;place-items:center;background:var(--surface);
  border:1px solid var(--line);color:var(--ink);cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.kh-icon-btn:hover{color:var(--brand-1);border-color:var(--brand-1);background:rgba(22,199,154,.07);}
.kh-toolbar{
  position:sticky;top:0;z-index:1020;min-height:64px;
  display:flex;align-items:center;gap:20px;padding:12px 32px;
  background:rgba(245,247,250,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.kh-toolbar-crumbs{flex:1 1 auto;min-width:0;}
.kh-toolbar-actions{display:flex;align-items:center;gap:12px;flex:none;}
.kh-search{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-pill);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.kh-search:focus-within{border-color:var(--brand-1);box-shadow:0 0 0 3px rgba(22,199,154,.14);}
.kh-search i{font-size:14px;color:var(--ink-2);}
.kh-search input{
  border:0;outline:0;background:transparent;font-size:14px;width:150px;color:var(--ink);
}
.kh-search input::placeholder{color:#9AA0AF;}

/* 按钮 */
.kh-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;text-decoration:none;
  transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s ease,background .25s ease,color .2s ease,border-color .2s ease;
}
.kh-btn-primary{
  background-image:var(--brand-grad);background-size:170% 100%;background-position:0 0;
  color:#fff;box-shadow:0 8px 20px rgba(22,199,154,.22);
}
.kh-btn-primary:hover{background-position:100% 0;transform:translateY(-2px);box-shadow:var(--sh-3);color:#fff;}
.kh-btn-primary:active{transform:scale(.98);}
.kh-btn-ghost{background:var(--surface);color:var(--ink);border-color:var(--line);}
.kh-btn-ghost:hover{color:var(--brand-1);border-color:var(--brand-1);background:rgba(22,199,154,.06);}
.kh-btn-ghost:active{transform:scale(.98);}
.kh-btn-light{background:#fff;color:var(--ink);box-shadow:var(--sh-1);}
.kh-btn-light:hover{transform:translateY(-2px);box-shadow:var(--sh-2);color:var(--brand-1);}
.kh-btn-sm{height:40px;padding:0 18px;font-size:14px;}
.kh-btn[disabled],.kh-btn.is-disabled{opacity:.45;pointer-events:none;}

/* 面包屑 */
.kh-crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.7);}
.kh-crumbs a{color:rgba(255,255,255,.7);transition:color .2s ease;}
.kh-crumbs a:hover{color:#fff;}
.kh-crumbs .sep{opacity:.45;}
.kh-crumbs .current{color:#fff;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.kh-crumbs--light{color:var(--ink-2);}
.kh-crumbs--light a{color:var(--ink-2);}
.kh-crumbs--light a:hover{color:var(--brand-1);}
.kh-crumbs--light .current{color:var(--ink);}

/* 文章头 */
.kh-article-hero{position:relative;overflow:hidden;background:var(--dark);color:#fff;padding:36px 0 96px;}
.kh-article-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity:.26;
}
.kh-article-hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(660px 340px at 12% 0%,rgba(22,199,154,.36),transparent 62%),
             radial-gradient(560px 320px at 92% 100%,rgba(124,92,255,.38),transparent 64%),
             linear-gradient(180deg,rgba(18,20,26,.55),rgba(18,20,26,.92));
}
.kh-article-hero .kh-container{position:relative;z-index:2;}
.kh-cat-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;border-radius:var(--r-pill);
  background-image:var(--brand-grad);color:#fff;
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.kh-article-title{
  font-size:clamp(28px,3.6vw,44px);line-height:1.2;font-weight:800;
  letter-spacing:-.02em;margin:18px 0 20px;max-width:960px;
}
.kh-meta{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13.5px;color:rgba(255,255,255,.76);}
.kh-meta-item{display:inline-flex;align-items:center;gap:7px;}
.kh-meta-item i{color:var(--brand-1);font-size:13px;}

/* 文章主体布局 */
.kh-article-wrap{padding-bottom:24px;}
.kh-article-layout{
  display:grid;grid-template-columns:minmax(0,1fr);gap:40px;
  justify-content:center;align-items:start;
}
.kh-article-card{
  background:var(--surface);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;
  margin-top:-56px;position:relative;z-index:3;
  max-width:860px;width:100%;
}
.kh-cover-16x9{margin:0;aspect-ratio:16/9;overflow:hidden;background:var(--surface-2);}
.kh-cover-16x9 img{width:100%;height:100%;object-fit:cover;transition:transform .45s cubic-bezier(.2,.7,.3,1);}
.kh-article-card:hover .kh-cover-16x9 img{transform:scale(1.03);}
.kh-article-body{padding:34px 44px 0;font-size:17px;line-height:1.9;color:var(--ink);word-wrap:break-word;}
.kh-article-body p{margin:0 0 20px;}
.kh-article-body h2{
  position:relative;font-size:clamp(21px,2.2vw,26px);font-weight:700;
  line-height:1.35;letter-spacing:-.01em;margin:40px 0 18px;padding-left:14px;
}
.kh-article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;
  border-radius:3px;background:var(--brand-grad);
}
.kh-article-body h3{font-size:19px;font-weight:600;line-height:1.4;margin:28px 0 14px;}
.kh-article-body a{color:var(--brand-1);text-decoration:underline;text-underline-offset:3px;}
.kh-article-body a:hover{color:var(--brand-2);}
.kh-article-body strong{font-weight:700;}
.kh-article-body ul{margin:0 0 20px;}
.kh-article-body ul li{position:relative;padding-left:20px;margin-bottom:10px;}
.kh-article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;
  border-radius:50%;background:var(--brand-grad);
}
.kh-article-body ol{margin:0 0 20px;counter-reset:khcount;}
.kh-article-body ol li{position:relative;padding-left:28px;margin-bottom:10px;counter-increment:khcount;}
.kh-article-body ol li::before{
  content:counter(khcount);position:absolute;left:0;top:.28em;
  width:20px;height:20px;border-radius:6px;display:grid;place-items:center;
  font-size:12px;font-weight:700;color:#fff;background-image:var(--brand-grad);
}
.kh-article-body blockquote{
  position:relative;margin:26px 0;padding:18px 24px;
  background:var(--surface-2);border-radius:var(--r-sm);color:var(--ink-2);
}
.kh-article-body blockquote::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  border-radius:3px;background:var(--brand-grad);
}
.kh-article-body img{border-radius:var(--r-md);height:auto;margin:8px 0;}
.kh-article-body figure{margin:26px 0;}
.kh-article-body figcaption{font-size:13px;text-align:center;color:var(--ink-2);margin-top:10px;}
.kh-article-body table{width:100%;border-collapse:collapse;margin:0 0 22px;font-size:15px;}
.kh-article-body th,.kh-article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;}
.kh-article-body th{background:var(--surface-2);font-weight:600;}
.kh-article-body code{background:var(--surface-2);border-radius:6px;padding:2px 6px;font-size:14px;}

.kh-article-foot{
  margin-top:32px;padding:24px 44px 36px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
}
.kh-tags{display:flex;flex-wrap:wrap;gap:8px;}
.kh-tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--r-pill);
  background:var(--surface-2);color:var(--ink-2);font-size:13px;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.kh-tag:hover{background:rgba(22,199,154,.13);color:var(--brand-1);transform:translateY(-2px);}
.kh-share{display:flex;align-items:center;gap:10px;}
.kh-share-label{font-size:13px;color:var(--ink-2);}
.kh-share-btn{
  width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
  background:var(--surface-2);color:var(--ink-2);border:0;cursor:pointer;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.kh-share-btn:hover{background-image:var(--brand-grad);color:#fff;transform:translateY(-2px);}

/* 空态 */
.kh-empty{
  min-height:280px;display:flex;flex-direction:column;align-items:center;
  justify-content:center;gap:16px;text-align:center;padding:48px 20px;
}
.kh-empty i{font-size:48px;color:#C7CCDA;}
.kh-empty p{font-size:17px;color:var(--ink-2);margin:0;}

/* 侧栏卡片 */
.kh-aside{display:grid;gap:20px;}
.kh-aside-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);padding:22px;box-shadow:var(--sh-1);
}
.kh-aside-title{
  position:relative;font-size:15px;font-weight:700;margin:0 0 14px;padding-left:11px;
}
.kh-aside-title::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:3px;
  border-radius:3px;background:var(--brand-grad);
}
.kh-hot-list a{
  display:flex;gap:10px;align-items:flex-start;
  padding:11px 0;border-bottom:1px dashed var(--line);
  font-size:14px;color:var(--ink-2);line-height:1.6;
  transition:color .2s ease,padding-left .2s ease;
}
.kh-hot-list a:last-child{border-bottom:0;padding-bottom:0;}
.kh-hot-list a:hover{color:var(--brand-1);padding-left:4px;}
.kh-hot-list .num{
  font-weight:800;font-variant-numeric:tabular-nums;font-size:14px;
  background-image:var(--brand-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  flex:none;
}
.kh-aside-cta{background:var(--dark);color:#fff;border:0;position:relative;overflow:hidden;}
.kh-aside-cta::after{
  content:"";position:absolute;right:-50px;bottom:-50px;width:160px;height:160px;
  background:radial-gradient(circle,rgba(124,92,255,.5),transparent 68%);
}
.kh-aside-cta .kh-aside-title{color:#fff;}
.kh-aside-cta p{font-size:13px;line-height:1.75;color:rgba(255,255,255,.72);margin:0 0 16px;position:relative;z-index:1;}
.kh-aside-cta .kh-btn{position:relative;z-index:1;width:100%;}

/* 上下篇 */
.kh-postnav{display:grid;grid-template-columns:1fr;gap:16px;margin:44px 0 0;}
.kh-postnav-item{
  display:block;padding:20px 24px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-md);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.kh-postnav-item:hover{border-color:var(--brand-1);transform:translateY(-3px);box-shadow:var(--sh-2);}
.kh-postnav-item .dir{font-size:12px;letter-spacing:.06em;color:var(--ink-2);display:block;margin-bottom:8px;}
.kh-postnav-item .ttl{font-size:16px;font-weight:600;line-height:1.5;display:block;}

/* 板块与卡片 */
.kh-section{padding:64px 0 0;}
.kh-section-head{margin-bottom:28px;}
.kh-section-head h2{
  font-size:clamp(22px,2.6vw,32px);line-height:1.25;font-weight:700;letter-spacing:-.01em;
}
.kh-section-head p{font-size:14.5px;color:var(--ink-2);margin-top:10px;}
.kh-card-v{
  display:block;height:100%;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;
  transition:transform .24s cubic-bezier(.2,.7,.3,1),box-shadow .24s ease,border-color .24s ease;
}
.kh-card-v:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:transparent;}
.kh-card-v .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--surface-2);}
.kh-card-v .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s cubic-bezier(.2,.7,.3,1);}
.kh-card-v:hover .thumb img{transform:scale(1.04);}
.kh-card-v .body{padding:18px 20px 22px;}
.kh-card-v h3{font-size:16.5px;font-weight:600;line-height:1.45;margin-bottom:10px;}
.kh-card-v p{font-size:13.5px;line-height:1.7;color:var(--ink-2);}

/* CTA 带 */
.kh-cta-band{
  position:relative;overflow:hidden;margin:56px 0 0;padding:40px 44px;
  border-radius:var(--r-xl);background-image:var(--brand-grad);color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.kh-cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;
  background:radial-gradient(circle,rgba(255,255,255,.3),transparent 68%);
}
.kh-cta-band h2{font-size:clamp(20px,2.4vw,28px);font-weight:800;line-height:1.3;position:relative;z-index:1;}
.kh-cta-band p{font-size:14.5px;color:rgba(255,255,255,.9);margin-top:8px;position:relative;z-index:1;}
.kh-cta-band .kh-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:1;}

/* 页脚 */
.kh-footer{background:var(--dark);color:#C9CDDA;margin-top:72px;position:relative;}
.kh-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--brand-grad);}
.kh-footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding:56px 0 40px;}
.kh-footer-brand{display:flex;align-items:center;gap:10px;}
.kh-footer-brand .kh-logo-mark{width:38px;height:38px;border-radius:12px;font-size:18px;}
.kh-footer p{font-size:14px;line-height:1.85;color:#9AA0AF;margin-top:14px;}
.kh-footer h4{font-size:15px;color:#fff;font-weight:600;margin-bottom:16px;}
.kh-footer-links a{display:block;font-size:14px;color:#C9CDDA;padding:6px 0;transition:color .2s ease;}
.kh-footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.kh-footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:20px 0;
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:#8A90A0;
}

/* 响应式 */
@media (min-width:576px){
  .kh-postnav{grid-template-columns:1fr 1fr;}
}
@media (min-width:768px){
  .kh-footer-grid{grid-template-columns:repeat(2,1fr);}
}
@media (min-width:992px){
  .kh-footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;}
}
@media (min-width:1400px){
  :root{--side-w:264px;}
  .kh-side{padding:24px 18px;}
  .kh-article-layout{grid-template-columns:minmax(0,860px) 280px;}
}
@media (min-width:1600px){
  .kh-article-layout{grid-template-columns:minmax(0,860px) 300px;gap:56px;}
}
@media (max-width:1199.98px){
  .kh-aside{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));}
}
@media (max-width:991.98px){
  .kh-side{transform:translateX(-100%);box-shadow:var(--sh-2);}
  .kh-side.open{transform:none;}
  .kh-main{margin-left:0;}
  .kh-topbar{display:flex;}
  .kh-toolbar{top:56px;min-height:56px;padding:8px 24px;}
  .kh-container{padding:0 24px;}
  .kh-article-hero{padding:28px 0 84px;}
  .kh-article-body{padding:28px 28px 0;font-size:16.5px;}
  .kh-article-foot{padding:22px 28px 32px;}
  .kh-cta-band{padding:32px 28px;}
}
@media (max-width:767.98px){
  .kh-search{display:none;}
  .kh-crumbs .current{white-space:normal;}
}
@media (max-width:575.98px){
  .kh-container{padding:0 16px;}
  .kh-toolbar{padding:8px 16px;}
  .kh-toolbar .kh-btn{display:none;}
  .kh-article-hero{padding:22px 0 76px;}
  .kh-article-body{padding:24px 18px 0;font-size:16px;line-height:1.85;}
  .kh-article-foot{padding:20px 18px 28px;flex-direction:column;align-items:flex-start;}
  .kh-article-title{margin:14px 0 16px;}
  .kh-cta-band{padding:28px 20px;border-radius:var(--r-lg);}
  .kh-cta-band .kh-actions,.kh-cta-band .kh-btn{width:100%;}
  .kh-section{padding-top:44px;}
}

/* roulang page: category1 */
/* ==============================
   设计变量
   ============================== */
:root{
  --brand-1:#16C79A;
  --brand-2:#7C5CFF;
  --brand-grad:linear-gradient(120deg,#16C79A 0%,#2ED3B7 45%,#7C5CFF 100%);
  --accent:#FFB020;
  --accent-2:#FF6A5E;
  --ink:#14161C;
  --ink-2:#5A6070;
  --line:#E6E8EF;
  --bg:#F5F7FA;
  --surface:#FFFFFF;
  --surface-2:#EEF1F7;
  --dark:#12141A;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-xl:32px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(20,22,28,.05);
  --sh-2:0 10px 28px rgba(20,22,28,.08);
  --sh-3:0 18px 44px rgba(124,92,255,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --side-w:248px;
  --topbar-h:64px;
}
@media (min-width:1400px){
  :root{ --side-w:264px; }
}

/* ==============================
   基础重置
   ============================== */
*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure{ margin:0; padding:0; }
ul,ol{ list-style:none; }
img{ display:block; max-width:100%; height:auto; }
a{ color:inherit; text-decoration:none; transition:color .2s var(--ease); }
a:hover{ color:var(--brand-1); }
button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }
input,textarea,select{ font:inherit; color:inherit; }
:focus-visible{ outline:2px solid var(--accent); outline-offset:2px; border-radius:6px; }
.kh-sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;
}

/* ==============================
   容器与栅格
   ============================== */
.kh-container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 32px;
}
@media (max-width:1199.98px){ .kh-container{ padding:0 24px; } }
@media (max-width:767.98px){ .kh-container{ padding:0 16px; } }

/* ==============================
   App Shell 布局
   ============================== */
.kh-shell{ position:relative; min-height:100vh; }
.kh-main{
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
@media (min-width:992px){
  .kh-main{ padding-left:var(--side-w); }
}

/* ==============================
   侧栏
   ============================== */
.kh-side{
  --bs-offcanvas-width:288px;
  background:var(--surface);
  border-right:1px solid var(--line);
  color:var(--ink);
}
.kh-side .offcanvas-header{
  padding:18px 20px;
  border-bottom:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.kh-side-close{
  width:36px;height:36px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink-2);background:var(--surface-2);
  transition:background .2s var(--ease), color .2s var(--ease);
}
.kh-side-close:hover{ background:#E3E7F0; color:var(--ink); }
.kh-side .offcanvas-body{
  display:flex;
  flex-direction:column;
  padding:0;
  overflow-y:auto;
}
@media (min-width:992px){
  .kh-side{
    position:fixed;
    top:0;left:0;bottom:0;
    width:var(--side-w);
    height:100vh;
    z-index:1030;
    display:flex;
    flex-direction:column;
    box-shadow:0 0 0 1px rgba(20,22,28,.02);
  }
  .kh-side .offcanvas-header{ display:none; }
  .kh-side .offcanvas-body{
    flex:1 1 auto;
    padding:22px 16px 20px;
    overflow-y:auto;
  }
}

/* 品牌区 */
.kh-brand{
  display:flex;
  align-items:center;
  gap:10px;
  min-width:0;
}
.kh-logo-mark{
  flex:0 0 auto;
  width:36px;height:36px;
  border-radius:12px;
  background:var(--brand-grad);
  color:#fff;
  font-size:17px;
  font-weight:800;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 6px 16px rgba(22,199,154,.28);
}
.kh-logo-text{
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.kh-brand-desk{ padding:0 8px 20px; margin-bottom:6px; border-bottom:1px solid var(--line); }
@media (max-width:991.98px){ .kh-brand-desk{ display:none; } }

/* 主导航 */
.kh-nav{ display:flex; flex-direction:column; gap:4px; }
.kh-nav-label{
  font-size:12px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--ink-2);
  padding:6px 10px 8px;
  text-transform:uppercase;
}
.kh-nav-link{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  height:44px;
  padding:0 12px;
  border-radius:12px;
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
  transition:background .2s var(--ease), color .2s var(--ease), transform .2s var(--ease);
}
.kh-nav-link i{
  width:20px;
  font-size:15px;
  text-align:center;
  color:var(--ink-2);
  transition:color .2s var(--ease);
}
.kh-nav-link:hover{
  background:var(--surface-2);
  color:var(--ink);
}
.kh-nav-link:hover i{ color:var(--brand-1); }
.kh-nav-link.active{
  background:linear-gradient(90deg,rgba(22,199,154,.14),rgba(124,92,255,.07));
  color:var(--brand-1);
  font-weight:600;
}
.kh-nav-link.active i{ color:var(--brand-1); }
.kh-nav-link.active::before{
  content:"";
  position:absolute;
  left:0;top:9px;bottom:9px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--brand-grad);
}

/* 侧栏底部卡片 */
.kh-side-card{
  margin-top:auto;
  padding:18px;
  border-radius:var(--r-lg);
  background:linear-gradient(160deg,#F3FBF8 0%,#F1F0FF 100%);
  border:1px solid var(--line);
}
.kh-side-card-title{
  font-size:15px;
  font-weight:700;
  color:var(--ink);
  margin-bottom:6px;
}
.kh-side-card-desc{
  font-size:13px;
  line-height:1.7;
  color:var(--ink-2);
  margin-bottom:14px;
}

/* ==============================
   顶部工具条
   ============================== */
.kh-topbar{
  position:sticky;
  top:0;
  z-index:1020;
  height:var(--topbar-h);
  display:flex;
  align-items:center;
  gap:16px;
  padding:0 32px;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
}
@media (max-width:1199.98px){ .kh-topbar{ padding:0 24px; } }
@media (max-width:991.98px){
  .kh-topbar{ height:56px; padding:0 16px; gap:12px; }
}
.kh-burger{
  display:none;
  width:40px;height:40px;
  border-radius:12px;
  align-items:center;
  justify-content:center;
  color:var(--ink);
  background:var(--surface-2);
  font-size:16px;
  transition:background .2s var(--ease);
}
.kh-burger:hover{ background:#E3E7F0; }
@media (max-width:991.98px){ .kh-burger{ display:inline-flex; } }

.kh-topbar-lead{ min-width:0; flex:1 1 auto; }
.kh-crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-2);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.kh-crumb a{ color:var(--ink-2); }
.kh-crumb a:hover{ color:var(--brand-1); }
.kh-crumb-sep{ color:#C3C8D6; }
.kh-crumb [aria-current="page"]{ color:var(--ink); font-weight:600; }

.kh-search{
  position:relative;
  display:flex;
  align-items:center;
  width:260px;
  flex:0 0 auto;
}
.kh-search i{
  position:absolute;
  left:14px;
  font-size:13px;
  color:var(--ink-2);
  pointer-events:none;
}
.kh-search input{
  width:100%;
  height:42px;
  padding:0 16px 0 38px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:var(--surface-2);
  font-size:14px;
  color:var(--ink);
  transition:border-color .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease);
}
.kh-search input::placeholder{ color:#98A0B3; }
.kh-search input:focus{
  outline:none;
  background:#fff;
  border-color:var(--brand-1);
  box-shadow:0 0 0 3px rgba(22,199,154,.18);
}
@media (max-width:991.98px){ .kh-search{ width:180px; } }
@media (max-width:767.98px){ .kh-search{ display:none; } }

/* ==============================
   按钮
   ============================== */
.kh-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  white-space:nowrap;
  cursor:pointer;
  transition:transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}
.kh-btn-sm{ height:40px; padding:0 18px; font-size:14px; }
.kh-btn-block{ width:100%; }

.kh-btn-primary{
  background:var(--brand-grad);
  background-size:160% 100%;
  background-position:0 0;
  color:#fff;
  box-shadow:0 8px 20px rgba(22,199,154,.24);
}
.kh-btn-primary:hover{
  color:#fff;
  background-position:100% 0;
  transform:translateY(-2px);
  box-shadow:var(--sh-3);
}
.kh-btn-primary:active{ transform:translateY(0) scale(.98); box-shadow:0 4px 12px rgba(22,199,154,.22); }

.kh-btn-ghost{
  background:#fff;
  border:1px solid var(--line);
  color:var(--ink);
}
.kh-btn-ghost:hover{
  color:var(--brand-1);
  border-color:var(--brand-1);
  background:rgba(22,199,154,.06);
  transform:translateY(-2px);
}
.kh-btn-ghost:active{ transform:translateY(0) scale(.98); }

.kh-btn-ghost-dark{
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.34);
  color:#fff;
}
.kh-btn-ghost-dark:hover{
  color:#fff;
  background:rgba(255,255,255,.18);
  border-color:rgba(255,255,255,.7);
  transform:translateY(-2px);
}

.kh-btn-light{
  background:#fff;
  color:var(--ink);
  box-shadow:0 10px 26px rgba(0,0,0,.18);
}
.kh-btn-light:hover{
  color:var(--brand-2);
  transform:translateY(-2px);
  box-shadow:0 16px 34px rgba(0,0,0,.24);
}

.kh-btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-1);
  background:none;
  border:0;
  padding:0;
  position:relative;
}
.kh-btn-text::after{
  content:"";
  position:absolute;
  left:0;right:100%;bottom:-3px;
  height:2px;
  background:var(--brand-grad);
  transition:right .25s var(--ease);
}
.kh-btn-text:hover::after{ right:0; }

/* ==============================
   通用标签 / 徽章
   ============================== */
.kh-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
  background:rgba(22,199,154,.12);
  color:#0E9C79;
}
.kh-tag-purple{ background:rgba(124,92,255,.12); color:#5B3EDB; }
.kh-tag-warn{ background:rgba(255,176,32,.18); color:#9A6600; }
.kh-tag-coral{ background:rgba(255,106,94,.14); color:#C93A2E; }

.kh-chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 16px;
  border-radius:var(--r-pill);
  font-size:13px;
  font-weight:600;
  background:var(--surface-2);
  color:var(--ink-2);
}
.kh-chip-light{
  background:rgba(255,255,255,.14);
  color:#DFFFF7;
  border:1px solid rgba(255,255,255,.24);
  backdrop-filter:blur(6px);
}

.kh-badge-num{
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  padding:8px 18px;
  border-radius:var(--r-pill);
  background:#fff;
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  color:var(--ink);
}
.kh-badge-num strong{ font-size:20px; font-weight:800; letter-spacing:-.02em; }
.kh-badge-num span{ font-size:12px; color:var(--ink-2); }

/* ==============================
   板块与标题
   ============================== */
.kh-section{ padding:72px 0; }
.kh-section-alt{ background:var(--surface); }
@media (max-width:991.98px){ .kh-section{ padding:56px 0; } }
@media (max-width:767.98px){ .kh-section{ padding:40px 0; } }

.kh-sec-head{ max-width:760px; margin-bottom:28px; }
.kh-sec-head h2{
  font-size:clamp(22px,2.6vw,32px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.01em;
  margin-bottom:10px;
}
.kh-sec-head p{
  font-size:15px;
  line-height:1.8;
  color:var(--ink-2);
}
.kh-sec-head-row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:28px;
}
.kh-sec-head-row .kh-sec-head{ margin-bottom:0; }
@media (max-width:767.98px){
  .kh-sec-head-row{ flex-direction:column; align-items:flex-start; gap:14px; }
}

/* ==============================
   分类 Hero
   ============================== */
.kh-hero-cat{
  position:relative;
  overflow:hidden;
  background:var(--dark);
  color:#fff;
  padding:64px 0 56px;
}
.kh-hero-cat-bg{
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(115deg,rgba(18,20,26,.94) 0%,rgba(18,20,26,.78) 46%,rgba(124,92,255,.42) 100%),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
}
.kh-hero-cat-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(620px 420px at 86% 18%,rgba(22,199,154,.38),transparent 66%);
}
.kh-hero-cat-inner{ position:relative; z-index:2; max-width:880px; }
.kh-hero-cat h1{
  font-size:clamp(30px,4.2vw,52px);
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.02em;
  margin:18px 0 16px;
  color:#fff;
}
.kh-hero-cat-sub{
  font-size:16px;
  line-height:1.8;
  color:#C9CDDA;
  max-width:640px;
}
.kh-hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin:28px 0 30px;
}
.kh-hero-badges{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.kh-hero-badges li{
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  padding:9px 20px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.18);
}
.kh-hero-badges strong{
  font-size:20px;
  font-weight:800;
  letter-spacing:-.02em;
  color:#fff;
}
.kh-hero-badges span{ font-size:12px; color:#B9BFCF; }
@media (max-width:767.98px){
  .kh-hero-cat{ padding:40px 0 36px; }
  .kh-hero-actions{ margin:22px 0 24px; }
  .kh-hero-actions .kh-btn{ width:100%; }
}

/* ==============================
   数据徽章带
   ============================== */
.kh-stat-strip{
  background:var(--surface);
  border-bottom:1px solid var(--line);
  padding:22px 0;
}
.kh-stat-row{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:16px;
}
.kh-stat-item{
  display:flex;
  align-items:center;
  gap:14px;
  padding:8px 4px;
}
.kh-stat-icon{
  flex:0 0 auto;
  width:44px;height:44px;
  border-radius:14px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:17px;
  color:#fff;
  background:var(--brand-grad);
}
.kh-stat-icon.p{ background:linear-gradient(120deg,#7C5CFF,#B39BFF); }
.kh-stat-icon.y{ background:linear-gradient(120deg,#FFB020,#FFD37A); }
.kh-stat-icon.c{ background:linear-gradient(120deg,#FF6A5E,#FFA69E); }
.kh-stat-item b{
  display:block;
  font-size:19px;
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.3;
}
.kh-stat-item small{
  display:block;
  font-size:12.5px;
  color:var(--ink-2);
  line-height:1.5;
}
@media (max-width:991.98px){
  .kh-stat-row{ grid-template-columns:repeat(2,minmax(0,1fr)); }
}
@media (max-width:575.98px){
  .kh-stat-row{ grid-template-columns:1fr; gap:10px; }
}

/* ==============================
   图片容器
   ============================== */
.kh-media{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  background:var(--surface-2);
}
.kh-media::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(135deg,rgba(22,199,154,.06),rgba(124,92,255,.06));
  z-index:0;
}
.kh-media img{
  position:relative;
  z-index:1;
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .45s var(--ease);
}
.kh-media-16x9{ aspect-ratio:16 / 9; }
.kh-media-9x16{ aspect-ratio:9 / 16; }
.kh-media-1x1{ aspect-ratio:1 / 1; }
.group:hover .kh-media img,
.kh-big-card:hover .kh-media img,
.kh-card-v:hover .kh-media img{ transform:scale(1.04); }

/* ==============================
   精选大卡 + 要点行
   ============================== */
.kh-big-card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .25s var(--ease), box-shadow .25s var(--ease);
}
.kh-big-card:hover{ transform:translateY(-4px); box-shadow:var(--sh-2); }
.kh-big-card .kh-media{ border-radius:0; }
.kh-big-card-body{ padding:26px 28px 28px; }
.kh-big-card-body h3{
  font-size:clamp(19px,1.9vw,24px);
  line-height:1.35;
  font-weight:700;
  letter-spacing:-.01em;
  margin:14px 0 12px;
}
.kh-big-card-body p{
  font-size:15px;
  line-height:1.85;
  color:var(--ink-2);
}
.kh-mini-list{
  margin-top:18px;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.kh-mini-list li{
  position:relative;
  padding-left:20px;
  font-size:14px;
  line-height:1.75;
  color:var(--ink-2);
}
.kh-mini-list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:8px;height:8px;
  border-radius:50%;
  background:var(--brand-grad);
}
@media (max-width:767.98px){
  .kh-big-card-body{ padding:20px; }
}

.kh-point-list{
  display:flex;
  flex-direction:column;
  gap:12px;
  height:100%;
}
.kh-point-row{
  display:flex;
  align-items:flex-start;
  gap:16px;
  flex:1 1 auto;
  padding:18px 20px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  transition:transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease);
}
.kh-point-row:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-2);
  border-color:#D9DEEB;
}
.kh-point-num{
  flex:0 0 auto;
  min-width:34px;
  font-size:19px;
  font-weight:800;
  line-height:1.5;
  letter-spacing:-.02em;
  background:var(--brand-grad);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  -webkit-text-fill-color:transparent;
  transition:transform .22s var(--ease);
}
.kh-point-row:hover .kh-point-num{ transform:translateX(4px); }
.kh-point-body h3{
  font-size:16px;
  font-weight:600;
  line-height:1.45;
  margin-bottom:4px;
}
.kh-point-body p{
  font-size:13.5px;
  line-height:1.7;
  color:var(--ink-2);
}

/* ==============================
   内容卡片
   ============================== */
.kh-card-v{
  display:flex;
  flex-direction:column;
  height:100%;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .24s var(--ease), box-shadow .24s var(--ease), border-color .24s var(--ease);
}
.kh-card-v:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-2);
  border-color:#D9DEEB;
}
.kh-card-v .kh-media{ border-radius:0; }
.kh-card-body{
  display:flex;
  flex-direction:column;
  flex:1 1 auto;
  padding:20px 22px 22px;
}
.kh-card-body h3{
  font-size:18px;
  line-height:1.4;
  font-weight:600;
  letter-spacing:-.01em;
  margin:12px 0 10px;
}
.kh-card-body p{
  font-size:14px;
  line-height:1.8;
  color:var(--ink-2);
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.kh-card-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:auto;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:var(--ink-2);
}
.kh-card-meta i{ margin-right:5px; font-size:12px; }
.kh-card-go{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:600;
  color:var(--brand-1);
  transition:gap .22s var(--ease);
}
.kh-card-v:hover .kh-card-go{ gap:10px; }

/* ==============================
   FAQ
   ============================== */
.kh-accordion{ display:flex; flex-direction:column; }
.kh-accordion .accordion-item{
  border:1px solid var(--line);
  border-radius:var(--r-md) !important;
  background:var(--surface);
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.kh-accordion .accordion-item:last-child{ margin-bottom:0; }
.kh-accordion .accordion-header{ margin:0; }
.kh-accordion .accordion-button{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  width:100%;
  padding:19px 22px 19px 26px;
  background:var(--surface);
  color:var(--ink);
  font-size:16.5px;
  font-weight:600;
  line-height:1.5;
  text-align:left;
  border:0;
  border-radius:0;
  box-shadow:none;
  transition:color .2s var(--ease), background .2s var(--ease);
}
.kh-accordion .accordion-button::after{ display:none; }
.kh-accordion .accordion-button::before{
  content:"";
  position:absolute;
  left:0;top:13px;bottom:13px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--brand-grad);
  opacity:0;
  transition:opacity .22s var(--ease);
}
.kh-accordion .accordion-button:hover{ background:#FAFBFD; }
.kh-accordion .accordion-button:focus,
.kh-accordion .accordion-button:focus-visible{
  outline:none;
  box-shadow:0 0 0 3px rgba(22,199,154,.18);
}
.kh-accordion .accordion-button:not(.collapsed){
  color:var(--brand-1);
  background:var(--surface);
  box-shadow:none;
}
.kh-accordion .accordion-button:not(.collapsed)::before{ opacity:1; }
.kh-accordion .accordion-body{
  padding:0 26px 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-2);
}
.kh-faq-icon{
  position:relative;
  flex:0 0 auto;
  margin-left:auto;
  width:20px;height:20px;
}
.kh-faq-icon::before,
.kh-faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink-2);
  border-radius:2px;
  transition:transform .25s var(--ease), opacity .25s var(--ease), background .25s var(--ease);
}
.kh-faq-icon::before{ left:2px;right:2px;top:9px;height:2px; }
.kh-faq-icon::after{ top:2px;bottom:2px;left:9px;width:2px; }
.kh-accordion .accordion-button:not(.collapsed) .kh-faq-icon::before{ background:var(--brand-1); }
.kh-accordion .accordion-button:not(.collapsed) .kh-faq-icon::after{
  transform:rotate(90deg);
  opacity:0;
}

/* ==============================
   CTA 转化带
   ============================== */
.kh-cta-band{
  position:relative;
  overflow:hidden;
  background:var(--brand-grad);
  color:#fff;
  padding:56px 0;
}
.kh-cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(520px 320px at 88% 12%,rgba(255,255,255,.24),transparent 68%);
  pointer-events:none;
}
.kh-cta-inner{
  position:relative;
  z-index:2;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}
.kh-cta-inner h2{
  font-size:clamp(22px,2.6vw,30px);
  line-height:1.3;
  font-weight:800;
  letter-spacing:-.01em;
  color:#fff;
  margin-bottom:8px;
}
.kh-cta-inner p{
  font-size:15px;
  line-height:1.8;
  color:rgba(255,255,255,.9);
  max-width:620px;
}
@media (max-width:767.98px){
  .kh-cta-band{ padding:36px 0; }
  .kh-cta-inner{ flex-direction:column; align-items:flex-start; gap:20px; }
  .kh-cta-inner .kh-btn{ width:100%; }
}

/* ==============================
   页脚
   ============================== */
.kh-footer{
  position:relative;
  background:var(--dark);
  color:#C9CDDA;
  padding:56px 0 28px;
  margin-top:auto;
}
.kh-footer::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:1px;
  background:var(--brand-grad);
  opacity:.85;
}
.kh-footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:32px;
}
.kh-footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.kh-footer p{
  font-size:13.5px;
  line-height:1.85;
  color:#9AA1B4;
  max-width:340px;
}
.kh-footer-links h4{
  font-size:14px;
  font-weight:700;
  color:#fff;
  margin-bottom:14px;
  letter-spacing:.02em;
}
.kh-footer-links a{
  display:block;
  font-size:13.5px;
  line-height:1.6;
  color:#C9CDDA;
  padding:6px 0;
  transition:color .2s var(--ease);
}
.kh-footer-links a:hover{ color:#fff; text-decoration:underline; }
.kh-footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  margin-top:40px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:12.5px;
  color:#8A91A5;
}
@media (max-width:991.98px){
  .kh-footer-grid{ grid-template-columns:1fr 1fr; gap:28px; }
  .kh-footer p{ max-width:none; }
}
@media (max-width:575.98px){
  .kh-footer{ padding:40px 0 24px; }
  .kh-footer-grid{ grid-template-columns:1fr; gap:22px; }
  .kh-footer-bottom{ flex-direction:column; align-items:flex-start; }
}

/* ==============================
   移动端底部 CTA
   ============================== */
.kh-mobile-cta{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:1040;
  background:#fff;
  border-top:1px solid var(--line);
  padding:10px 16px calc(10px + env(safe-area-inset-bottom,0px));
  box-shadow:0 -6px 20px rgba(20,22,28,.08);
}
.kh-mobile-cta .kh-btn{ width:100%; }
@media (max-width:767.98px){
  .kh-mobile-cta{ display:block; }
  .kh-main{ padding-bottom:80px; }
}

/* roulang page: category2 */
:root{
  --brand-1:#16C79A;
  --brand-2:#7C5CFF;
  --brand-grad:linear-gradient(120deg,#16C79A 0%,#2ED3B7 45%,#7C5CFF 100%);
  --brand-grad-soft:linear-gradient(120deg,rgba(22,199,154,.12) 0%,rgba(124,92,255,.12) 100%);
  --accent:#FFB020;
  --accent-2:#FF6A5E;
  --ink:#14161C;
  --ink-2:#5A6070;
  --line:#E6E8EF;
  --bg:#F5F7FA;
  --surface:#FFFFFF;
  --surface-2:#EEF1F7;
  --dark:#12141A;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-xl:32px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(20,22,28,.05);
  --sh-2:0 10px 28px rgba(20,22,28,.08);
  --sh-3:0 18px 44px rgba(124,92,255,.16);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --side-w:248px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
.kh-skip{position:absolute;left:-9999px;top:0;z-index:2000;background:var(--dark);color:#fff;padding:12px 20px;border-radius:0 0 var(--r-md) 0;}
.kh-skip:focus{left:0;}

/* ---------- 布局骨架 ---------- */
.kh-shell{min-height:100vh;}
.kh-container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;}
.kh-main{min-height:100vh;display:flex;flex-direction:column;}

/* ---------- 侧栏 ---------- */
.kh-side{
  --bs-offcanvas-width:288px;
  --bs-offcanvas-bg:var(--dark);
  background:var(--surface);
  border-right:1px solid var(--line);
  color:var(--ink);
}
.kh-side-header{padding:14px 16px 0;border:0;}
.kh-side-close{
  width:38px;height:38px;border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.16);
  background:transparent;color:#fff;display:inline-grid;place-items:center;font-size:16px;
}
.kh-side-body{padding:0 16px 26px;display:flex;flex-direction:column;gap:22px;}
.kh-brand{display:flex;align-items:center;gap:12px;padding:6px 8px;}
.kh-logo-mark{
  display:inline-grid;place-items:center;width:38px;height:38px;flex:0 0 38px;
  border-radius:12px;background:var(--brand-grad);color:#fff;font-weight:800;font-size:18px;
  box-shadow:0 6px 18px rgba(22,199,154,.35);
}
.kh-logo-text{font-size:17px;font-weight:700;letter-spacing:-.01em;}
.kh-nav{display:flex;flex-direction:column;gap:4px;}
.kh-nav-label{font-size:12px;letter-spacing:.08em;color:var(--ink-2);padding:0 10px 6px;}
.kh-nav-link{
  position:relative;display:flex;align-items:center;gap:12px;height:44px;padding:0 12px;
  border-radius:12px;font-size:15px;color:var(--ink-2);transition:background .2s ease,color .2s ease,transform .2s ease;
}
.kh-nav-link i{width:20px;text-align:center;font-size:15px;}
.kh-nav-link:hover{background:var(--surface-2);color:var(--ink);}
.kh-nav-link.active{background:var(--brand-grad-soft);color:var(--brand-1);font-weight:600;}
.kh-nav-link.active::before{
  content:'';position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:3px;background:var(--brand-grad);
}
.kh-side-card{
  margin-top:auto;background:var(--dark);color:#fff;border-radius:var(--r-lg);padding:20px;
  position:relative;overflow:hidden;
}
.kh-side-card::after{
  content:'';position:absolute;right:-40px;top:-40px;width:130px;height:130px;border-radius:50%;
  background:radial-gradient(circle,rgba(22,199,154,.55),transparent 70%);
}
.kh-side-card-title{font-size:15px;font-weight:700;margin-bottom:6px;position:relative;z-index:2;}
.kh-side-card-text{font-size:13px;line-height:1.7;color:#C9CDDA;margin-bottom:14px;position:relative;z-index:2;}
.kh-side-card .kh-btn{position:relative;z-index:2;width:100%;justify-content:center;height:44px;font-size:14px;}

/* ---------- 移动顶栏 ---------- */
.kh-mobilebar{
  display:flex;align-items:center;gap:12px;height:56px;padding:0 16px;background:var(--surface);
  border-bottom:1px solid var(--line);position:sticky;top:0;z-index:1030;
}
.kh-burger{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--ink);
  display:inline-grid;place-items:center;font-size:16px;
}
.kh-burger:hover{border-color:var(--brand-1);color:var(--brand-1);}
.kh-mobilebrand{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:700;flex:1;min-width:0;}
.kh-mobilebrand .kh-logo-mark{width:30px;height:30px;flex:0 0 30px;font-size:14px;border-radius:10px;}
.kh-mobilebrand span:last-child{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}

/* ---------- 工具条 ---------- */
.kh-toolbar{
  position:sticky;top:0;z-index:1020;background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);
}
.kh-toolbar-inner{display:flex;align-items:center;gap:16px;min-height:64px;padding:10px 0;}
.kh-crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);flex:1;min-width:0;}
.kh-crumb a:hover{color:var(--brand-1);}
.kh-crumb .sep{color:#B9BFCC;}
.kh-crumb .cur{color:var(--ink);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.kh-search{
  display:flex;align-items:center;gap:10px;height:44px;padding:0 16px;border:1px solid var(--line);
  border-radius:var(--r-pill);background:var(--surface);min-width:230px;transition:border-color .2s ease,box-shadow .2s ease;
}
.kh-search i{color:var(--ink-2);font-size:14px;}
.kh-search input{
  border:0;outline:0;background:transparent;font-size:14px;width:100%;color:var(--ink);
}
.kh-search input::placeholder{color:#98A0B0;}
.kh-search:focus-within{border-color:var(--brand-1);box-shadow:0 0 0 3px rgba(22,199,154,.16);}

/* ---------- 按钮 ---------- */
.kh-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;
  border-radius:var(--r-pill);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.kh-btn-primary{background:var(--brand-grad);color:#fff;box-shadow:0 10px 24px rgba(22,199,154,.26);}
.kh-btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--sh-3);}
.kh-btn-primary:active{transform:scale(.98);}
.kh-btn-ghost{background:#fff;border-color:var(--line);color:var(--ink);}
.kh-btn-ghost:hover{border-color:var(--brand-1);color:var(--brand-1);background:rgba(22,199,154,.06);}
.kh-btn-ghost:active{transform:scale(.98);}
.kh-btn-light{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.28);color:#fff;}
.kh-btn-light:hover{background:rgba(255,255,255,.16);color:#fff;transform:translateY(-2px);}
.kh-btn-sm{height:40px;padding:0 18px;font-size:14px;}
.kh-btn[disabled],.kh-btn.disabled{opacity:.45;pointer-events:none;}
.kh-textlink{color:var(--brand-1);font-weight:600;font-size:14px;position:relative;display:inline-flex;align-items:center;gap:6px;}
.kh-textlink::after{
  content:'';position:absolute;left:0;right:0;bottom:-3px;height:1px;background:currentColor;
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.kh-textlink:hover::after{transform:scaleX(1);}

/* ---------- 分类 Hero ---------- */
.kh-cathero{position:relative;overflow:hidden;background:var(--dark);color:#fff;padding:60px 0 52px;}
.kh-cathero::before{
  content:'';position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  filter:blur(7px) saturate(1.1);opacity:.4;transform:scale(1.08);
}
.kh-cathero::after{
  content:'';position:absolute;inset:0;
  background:
    radial-gradient(720px 320px at 16% 6%,rgba(22,199,154,.5),transparent 70%),
    radial-gradient(640px 300px at 88% 96%,rgba(124,92,255,.44),transparent 70%),
    linear-gradient(180deg,rgba(18,20,26,.6),rgba(18,20,26,.94));
}
.kh-cathero .kh-container{position:relative;z-index:2;}
.kh-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.08em;
  padding:7px 14px;border-radius:var(--r-pill);background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.2);color:#E8ECF5;margin-bottom:20px;
}
.kh-eyebrow i{color:var(--brand-1);}
.kh-cathero h1{
  font-size:clamp(30px,4.2vw,52px);line-height:1.15;font-weight:800;letter-spacing:-.02em;max-width:820px;
}
.kh-hero-sub{font-size:17px;line-height:1.8;color:#C9CDDA;max-width:640px;margin-top:18px;}
.kh-hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.kh-hero-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.kh-hero-badge{
  display:inline-flex;align-items:baseline;gap:8px;padding:10px 18px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.94);color:var(--ink);font-size:12px;
}
.kh-hero-badge b{font-size:19px;font-weight:800;letter-spacing:-.01em;background:var(--brand-grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.kh-hero-badge span{color:var(--ink-2);}

/* ---------- 板块通用 ---------- */
.kh-section{padding:72px 0;}
.kh-section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.kh-section-head{margin-bottom:28px;max-width:760px;}
.kh-section-label{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--brand-1);
  text-transform:uppercase;margin-bottom:10px;
}
.kh-section-head h2{font-size:clamp(22px,2.6vw,32px);line-height:1.25;font-weight:700;letter-spacing:-.01em;}
.kh-section-head p{margin-top:12px;color:var(--ink-2);font-size:15px;}

/* ---------- 标签过滤 ---------- */
.kh-tabs{
  display:flex;flex-wrap:wrap;gap:8px;border-bottom:1px solid var(--line);margin-bottom:32px;
  padding-bottom:0;
}
.kh-tab{
  position:relative;background:transparent;border:0;padding:14px 18px;font-size:15px;color:var(--ink-2);
  cursor:pointer;border-radius:var(--r-sm) var(--r-sm) 0 0;transition:color .2s ease,background .2s ease;
}
.kh-tab:hover{color:var(--ink);background:var(--surface-2);}
.kh-tab.active{color:var(--brand-1);font-weight:600;}
.kh-tab.active::after{
  content:'';position:absolute;left:12px;right:12px;bottom:-1px;height:3px;border-radius:3px;background:var(--brand-grad);
}
.kh-tab:focus-visible{outline:2px solid var(--accent);outline-offset:-2px;}

/* ---------- 瀑布双列卡 ---------- */
.kh-waterfall{column-count:2;column-gap:24px;}
.kh-water-item{
  break-inside:avoid;margin-bottom:24px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s ease;
}
.kh-water-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.kh-water-item.kh-hide{display:none;}
.kh-thumb{position:relative;overflow:hidden;background:var(--surface-2);}
.kh-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s cubic-bezier(.2,.7,.3,1);}
.kh-water-item:hover .kh-thumb img{transform:scale(1.04);}
.kh-ratio-tall .kh-thumb{aspect-ratio:3/4;}
.kh-ratio-wide .kh-thumb{aspect-ratio:16/9;}
.kh-thumb-tag{
  position:absolute;left:14px;top:14px;padding:5px 12px;border-radius:var(--r-pill);
  background:var(--brand-grad);color:#fff;font-size:12px;font-weight:600;
}
.kh-thumb-meta{
  position:absolute;right:14px;top:14px;padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(18,20,26,.62);color:#fff;font-size:12px;font-weight:600;
}
.kh-water-body{padding:20px 22px 22px;}
.kh-water-body h3{font-size:19px;line-height:1.35;font-weight:600;}
.kh-water-body p{margin-top:10px;font-size:14px;line-height:1.75;color:var(--ink-2);}
.kh-water-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:16px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-2);
}
.kh-water-foot b{font-weight:700;color:var(--ink);}

/* ---------- 时间轴 ---------- */
.kh-timeline{position:relative;padding-left:30px;}
.kh-timeline::before{
  content:'';position:absolute;left:6px;top:10px;bottom:10px;width:2px;
  background:linear-gradient(180deg,var(--brand-1),var(--brand-2));opacity:.4;
}
.kh-timeline li{position:relative;padding-bottom:28px;}
.kh-timeline li:last-child{padding-bottom:0;}
.kh-timeline li::before{
  content:'';position:absolute;left:-30px;top:5px;width:14px;height:14px;border-radius:50%;
  background:#fff;border:3px solid var(--brand-1);
}
.kh-timeline li:nth-child(even)::before{border-color:var(--brand-2);}
.kh-tl-time{font-size:13px;font-weight:700;color:var(--brand-1);letter-spacing:.02em;}
.kh-timeline li:nth-child(even) .kh-tl-time{color:var(--brand-2);}
.kh-tl-title{font-size:17px;font-weight:600;margin-top:4px;}
.kh-tl-desc{font-size:14px;color:var(--ink-2);margin-top:6px;}

/* ---------- 数据徽章 ---------- */
.kh-badges{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.kh-badge-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px 22px;
  box-shadow:var(--sh-1);transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s ease;
}
.kh-badge-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.kh-badge-num{
  font-size:34px;font-weight:800;letter-spacing:-.02em;line-height:1.1;
  background:var(--brand-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.kh-badge-num small{font-size:14px;font-weight:700;margin-left:4px;}
.kh-badge-label{font-size:13px;color:var(--ink-2);margin-top:8px;}

/* ---------- FAQ ---------- */
.kh-faq{margin:0;}
.kh-faq .accordion-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  margin-bottom:12px;
}
.kh-faq .accordion-header{margin:0;}
.kh-faq .accordion-button{
  position:relative;width:100%;background:var(--surface);border:0;box-shadow:none;
  padding:18px 56px 18px 20px;font-size:16px;font-weight:600;color:var(--ink);text-align:left;
  transition:color .2s ease,box-shadow .2s ease;
}
.kh-faq .accordion-button:not(.collapsed){
  color:var(--brand-1);box-shadow:inset 3px 0 0 0 var(--brand-1);background:var(--surface);
}
.kh-faq .accordion-button::after{
  content:'';position:absolute;right:22px;top:50%;width:14px;height:2px;border-radius:2px;
  background:var(--ink-2);transform:translateY(-50%);transition:background .2s ease;
}
.kh-faq .accordion-button::before{
  content:'';position:absolute;right:28px;top:50%;width:2px;height:14px;border-radius:2px;
  background:var(--ink-2);transform:translateY(-50%);transition:transform .2s ease,background .2s ease;
}
.kh-faq .accordion-button:not(.collapsed)::before{transform:translateY(-50%) scaleY(0);background:var(--brand-1);}
.kh-faq .accordion-button:not(.collapsed)::after{background:var(--brand-1);}
.kh-faq .accordion-body{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--ink-2);}

/* ---------- CTA 带 ---------- */
.kh-ctaband{
  position:relative;overflow:hidden;background:var(--dark);color:#fff;border-radius:var(--r-xl);
  padding:48px 52px;display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.kh-ctaband::after{
  content:'';position:absolute;inset:0;
  background:
    radial-gradient(520px 260px at 12% 10%,rgba(22,199,154,.42),transparent 70%),
    radial-gradient(480px 240px at 92% 96%,rgba(124,92,255,.4),transparent 70%);
}
.kh-ctaband > *{position:relative;z-index:2;}
.kh-ctaband h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700;}
.kh-ctaband p{margin-top:12px;color:#C9CDDA;font-size:15px;max-width:560px;}
.kh-cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:0 0 auto;}

/* ---------- 页脚 ---------- */
.kh-footer{
  margin-top:auto;background:var(--dark);color:#C9CDDA;padding:64px 0 28px;
  border-top:1px solid transparent;
  background-image:linear-gradient(var(--dark),var(--dark)),var(--brand-grad);
  background-origin:border-box;background-clip:padding-box,border-box;
}
.kh-footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.kh-footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.kh-footer p{font-size:14px;line-height:1.8;max-width:400px;}
.kh-footer-links h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;}
.kh-footer-links a{display:block;font-size:14px;color:#C9CDDA;padding:6px 0;}
.kh-footer-links a:hover{color:#fff;text-decoration:underline;}
.kh-footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:#8D94A6;
}

/* ---------- 移动吸附 CTA ---------- */
.kh-mobile-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:1040;background:#fff;
  border-top:1px solid var(--line);padding:10px 16px;box-shadow:0 -8px 24px rgba(20,22,28,.08);
}
.kh-mobile-cta .kh-btn{width:100%;}

/* ---------- 响应式 ---------- */
@media (min-width:992px){
  .kh-mobilebar{display:none;}
  .kh-side{
    position:fixed!important;
    top:0;left:0;bottom:0;
    width:var(--side-w)!important;
    height:100vh!important;
    z-index:1035;
    background:var(--surface)!important;
    border-right:1px solid var(--line)!important;
    overflow-y:auto;
  }
  .kh-side .offcanvas-header{display:none;}
  .kh-side .offcanvas-body{
    display:flex!important;flex-direction:column;gap:22px;padding:26px 16px 26px!important;
    overflow:visible!important;background:transparent!important;flex-grow:1;
  }
  .kh-main{margin-left:var(--side-w);}
  .kh-toolbar{top:0;}
  .kh-mobile-cta{display:none;}
}
@media (min-width:1400px){
  :root{--side-w:264px;}
}
@media (max-width:991.98px){
  .kh-side-body{padding-top:4px;}
  .kh-side-close{border-color:rgba(255,255,255,.18);}
  .kh-toolbar{top:56px;}
  .kh-mobile-cta{display:block;}
  .kh-footer{padding-bottom:96px;}
}
@media (max-width:1199.98px){
  .kh-container{padding:0 24px;}
  .kh-footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:991.98px){
  .kh-section{padding:56px 0;}
  .kh-badges{grid-template-columns:repeat(2,1fr);}
  .kh-ctaband{flex-direction:column;align-items:flex-start;padding:40px 32px;}
  .kh-search{min-width:170px;}
}
@media (max-width:767.98px){
  .kh-waterfall{column-count:1;}
  .kh-toolbar-inner{flex-wrap:wrap;gap:12px;padding:12px 0;}
  .kh-search{width:100%;min-width:0;}
  .kh-toolbar-inner .kh-btn{width:100%;}
  .kh-cathero{padding:44px 0 40px;}
  .kh-hero-actions .kh-btn{width:100%;}
}
@media (max-width:575.98px){
  .kh-container{padding:0 16px;}
  .kh-section{padding:40px 0;}
  .kh-badges{grid-template-columns:1fr;}
  .kh-footer-grid{grid-template-columns:1fr;}
  .kh-cathero h1{font-size:28px;}
  .kh-ctaband{padding:32px 22px;border-radius:var(--r-lg);}
  .kh-cta-actions{width:100%;}
  .kh-cta-actions .kh-btn{width:100%;}
}