/* roulang page: index */
:root{
  --c-brand:#6C4CF1;--c-brand-600:#5B37E8;--c-brand-300:#B7A5FF;--c-brand-050:#F1ECFF;
  --c-accent:#B4F04A;--c-accent-ink:#2A3B00;--c-warn:#FF6B4A;
  --c-ink-900:#14101F;--c-ink-700:#2C2540;--c-ink-500:#6E6785;--c-ink-300:#A79FBF;
  --c-bg:#F7F5FC;--c-surface:#FFFFFF;--c-line:#E8E3F5;
  --c-hero-from:#1B1330;--c-hero-to:#3A1F6E;
  --grad-brand:linear-gradient(120deg,#6C4CF1 0%,#A64CF1 55%,#FF6B9A 100%);
  --grad-hero:linear-gradient(135deg,#1B1330 0%,#3A1F6E 100%);
  --sh-1:0 1px 2px rgba(20,16,31,.05);
  --sh-2:0 16px 40px -16px rgba(20,16,31,.18);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;font-size:16px;line-height:1.75;color:var(--c-ink-700);background:var(--c-bg);font-variant-numeric:tabular-nums;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0;padding:0}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(108,76,241,.35);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:768px){.container{padding-left:24px;padding-right:24px}}
@media(min-width:1280px){.container{padding-left:32px;padding-right:32px}}
.section{padding:52px 0}
@media(min-width:768px){.section{padding:88px 0}}
.section-muted{background:#F2EFFA}
.section-plain{background:var(--c-surface)}
main{display:block}

/* 导航 */
.site-header{position:fixed;top:0;left:0;right:0;z-index:60;height:72px;display:flex;align-items:center;
  background:rgba(255,255,255,.06);backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.18);box-shadow:0 10px 34px -22px rgba(20,16,31,.65);
  transition:height .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease}
.site-header.is-scrolled{height:64px;background:#fff;border-bottom-color:var(--c-line);box-shadow:var(--sh-2)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:36px;height:36px;border-radius:11px;background:var(--grad-brand);display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 10px 22px -14px rgba(108,76,241,.9)}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em;color:#fff;white-space:nowrap}
.site-header.is-scrolled .brand-text{color:var(--c-ink-900)}
.nav-links{display:none;align-items:center;gap:4px}
@media(min-width:1024px){.nav-links{display:flex}}
.nav-link{position:relative;display:inline-block;padding:8px 12px;border-radius:999px;font-size:15px;font-weight:500;color:rgba(255,255,255,.88);transition:color .18s,background .18s}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.14)}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--grad-brand)}
.site-header.is-scrolled .nav-link{color:var(--c-ink-700)}
.site-header.is-scrolled .nav-link:hover{color:var(--c-brand-600);background:var(--c-brand-050)}
.site-header.is-scrolled .nav-link.is-active{color:var(--c-brand-600)}
.nav-actions{display:flex;align-items:center;gap:10px}
.icon-btn{width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff;border:1px solid rgba(255,255,255,.28);transition:background .18s,border-color .18s,color .18s}
.icon-btn:hover{background:rgba(255,255,255,.16)}
.site-header.is-scrolled .icon-btn{color:var(--c-ink-700);border-color:var(--c-line)}
.site-header.is-scrolled .icon-btn:hover{background:var(--c-brand-050);color:var(--c-brand-600);border-color:var(--c-brand-300)}
.nav-cta{display:none}
@media(min-width:640px){.nav-cta{display:inline-flex}}
.hamburger{display:flex;width:40px;height:40px;border-radius:12px;align-items:center;justify-content:center;color:#fff;border:1px solid rgba(255,255,255,.28)}
@media(min-width:1024px){.hamburger{display:none}}
.site-header.is-scrolled .hamburger{color:var(--c-ink-900);border-color:var(--c-line)}

/* 抽屉 */
.drawer{position:fixed;inset:0;z-index:80;display:flex;flex-direction:column;padding:22px 22px 32px;
  background:rgba(20,16,31,.96);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);color:#fff;
  transform:translateY(-100%);opacity:0;pointer-events:none;transition:transform .28s cubic-bezier(.2,.7,.3,1),opacity .24s ease}
.drawer.is-open{transform:translateY(0);opacity:1;pointer-events:auto}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-brand{font-size:17px;font-weight:800}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.3);display:flex;align-items:center;justify-content:center;color:#fff}
.drawer-nav{display:flex;flex-direction:column}
.drawer-link{font-size:18px;line-height:56px;border-bottom:1px solid rgba(255,255,255,.12);color:rgba(255,255,255,.92);opacity:0;transform:translateY(8px);transition:opacity .3s ease,transform .3s ease}
.drawer.is-open .drawer-link{opacity:1;transform:translateY(0)}
.drawer.is-open .drawer-link:nth-child(1){transition-delay:.06s}
.drawer.is-open .drawer-link:nth-child(2){transition-delay:.11s}
.drawer.is-open .drawer-link:nth-child(3){transition-delay:.16s}
.drawer.is-open .drawer-link:nth-child(4){transition-delay:.21s}
.drawer.is-open .drawer-link:nth-child(5){transition-delay:.26s}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:14px;padding-top:24px}
.drawer-foot p{font-size:14px;color:rgba(255,255,255,.7)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;border-radius:999px;
  padding:12px 24px;border:1px solid transparent;transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s,background .18s,color .18s,border-color .18s,filter .18s;white-space:nowrap}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 14px 30px -16px rgba(108,76,241,.8)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.6);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.16);border-color:#fff;transform:translateY(-2px)}
.btn-outline{background:#fff;border-color:var(--c-line);color:var(--c-ink-900)}
.btn-outline:hover{border-color:var(--c-brand);color:var(--c-brand-600);transform:translateY(-2px)}
.btn-sm{padding:9px 18px;font-size:14px}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--c-brand-600);font-size:14px;font-weight:600;transition:color .18s}
.text-link svg{transition:transform .18s}
.text-link:hover{color:var(--c-brand)}
.text-link:hover svg{transform:translateX(3px)}

/* Hero */
.hero{position:relative;display:flex;align-items:center;overflow:hidden;color:#fff;padding-top:72px;
  min-height:520px}
@media(min-width:768px){.hero{min-height:640px}}
@media(min-width:1280px){.hero{min-height:700px}}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;transform:scale(1.04)}
.hero-mask{position:absolute;inset:0;background:linear-gradient(135deg,rgba(27,19,48,.94) 0%,rgba(58,31,110,.84) 58%,rgba(58,31,110,.72) 100%)}
.hero::after{content:"";position:absolute;right:-180px;top:52%;width:560px;height:560px;transform:translateY(-50%);border-radius:50%;
  border:1px solid rgba(183,165,255,.16);box-shadow:0 0 0 78px rgba(183,165,255,.05),0 0 0 156px rgba(183,165,255,.035);pointer-events:none}
.hero-inner{position:relative;z-index:2;padding-top:56px;padding-bottom:64px;width:100%}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.24);color:rgba(255,255,255,.92)}
.dot-accent{width:7px;height:7px;border-radius:50%;background:var(--c-accent);flex:0 0 auto}
.hero-title{margin-top:22px;font-size:28px;line-height:36px;font-weight:800;letter-spacing:-.01em;color:#fff}
@media(min-width:768px){.hero-title{font-size:40px;line-height:48px}}
.hero-sub{margin-top:16px;font-size:16px;line-height:1.8;color:rgba(255,255,255,.82);max-width:620px}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px}
.hero-tags{margin-top:34px;display:flex;flex-wrap:wrap;gap:14px 28px}
.hero-tag{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.88)}
.hero-tag strong{font-size:16px;font-weight:800;color:#fff}
.scroll-cue{display:inline-flex;align-items:center;gap:8px;margin-top:38px;font-size:13px;color:rgba(255,255,255,.66)}
.scroll-cue span{display:block;width:1px;height:26px;background:linear-gradient(180deg,rgba(255,255,255,.7),rgba(255,255,255,0));animation:cue 2s ease-in-out infinite}
@keyframes cue{0%,100%{transform:translateY(0);opacity:.5}50%{transform:translateY(6px);opacity:1}}

/* 区块标题 */
.section-head{display:flex;flex-direction:column;gap:14px;margin-bottom:34px}
@media(min-width:768px){.section-head{flex-direction:row;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px}}
.section-kicker{display:block;font-size:13px;font-weight:600;color:var(--c-brand-600);letter-spacing:.06em;margin-bottom:10px}
.section-title{position:relative;padding-left:14px;font-size:22px;line-height:30px;font-weight:700;letter-spacing:-.01em;color:var(--c-ink-900)}
.section-title::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;background:var(--grad-brand)}
@media(min-width:768px){.section-title{font-size:28px;line-height:36px}}
.section-desc{max-width:560px;font-size:15px;line-height:1.8;color:var(--c-ink-500)}

/* 卡片与徽章 */
.card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:16px;box-shadow:var(--sh-1);
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s,border-color .18s}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--c-brand-300)}
.badge{display:inline-block;border-radius:999px;padding:4px 12px;font-size:12px;line-height:16px;font-weight:600;background:rgba(108,76,241,.1);color:var(--c-brand-600)}
.badge-accent{background:var(--c-accent);color:var(--c-accent-ink)}
.icon-square{width:40px;height:40px;border-radius:12px;background:rgba(108,76,241,.12);display:flex;align-items:center;justify-content:center;color:var(--c-brand-600);flex:0 0 auto}
.icon-round{width:32px;height:32px;border-radius:50%;background:rgba(108,76,241,.12);display:flex;align-items:center;justify-content:center;color:var(--c-brand-600);flex:0 0 auto}

/* 服务能力 */
.service-lg{padding:28px;display:flex;flex-direction:column;gap:16px}
.service-lg h3{font-size:20px;line-height:28px;font-weight:600;color:var(--c-ink-900)}
.service-lg p{font-size:15px;color:var(--c-ink-500)}
.service-media{position:relative;border-radius:14px;overflow:hidden;aspect-ratio:16/9;background:var(--grad-brand)}
.service-media img{width:100%;height:100%;object-fit:cover}
.service-sm{padding:24px;display:flex;flex-direction:column;gap:12px}
.service-sm h3{font-size:16px;line-height:24px;font-weight:600;color:var(--c-ink-900)}
.service-sm p{font-size:14px;color:var(--c-ink-500)}
.service-rows{margin-top:26px}
.row-item{display:flex;gap:16px;align-items:flex-start;padding:20px 6px;border-bottom:1px dashed var(--c-line);border-radius:12px;
  transition:background .18s,padding .18s}
.row-item:first-child{border-top:1px dashed var(--c-line)}
.row-item:hover{background:var(--c-brand-050);padding-left:16px;padding-right:16px}
.row-item h4{font-size:16px;font-weight:600;color:var(--c-ink-900)}
.row-item p{font-size:14px;color:var(--c-ink-500);margin-top:4px}

/* 数据条 */
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--c-line);border:1px solid var(--c-line);
  border-radius:16px;overflow:hidden;box-shadow:var(--sh-1)}
@media(min-width:768px){.stats{grid-template-columns:repeat(4,1fr)}}
.stat{background:#fff;padding:24px}
.stat-num{font-size:30px;line-height:1.1;font-weight:800;color:var(--c-ink-900);letter-spacing:-.02em}
@media(min-width:768px){.stat-num{font-size:38px}}
.stat-num em{font-style:normal;color:var(--c-brand-600)}
.stat-label{margin-top:8px;font-size:14px;color:var(--c-ink-500)}

/* 案例 */
.case-card{position:relative;border-radius:16px;overflow:hidden;border:1px solid var(--c-line);background:#fff;box-shadow:var(--sh-1);
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s,border-color .18s}
.case-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--c-brand-300)}
.case-media{position:relative;overflow:hidden;background:var(--grad-brand)}
.ratio-16-10{aspect-ratio:16/10}
.ratio-4-5{aspect-ratio:4/5}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s cubic-bezier(.2,.7,.3,1)}
.case-card:hover .case-media img{transform:scale(1.04)}
.case-body{position:absolute;left:0;right:0;bottom:0;padding:20px;color:#fff;
  background:linear-gradient(180deg,rgba(27,19,48,0) 0%,rgba(27,19,48,.88) 72%);
  transform:translateY(8px);transition:transform .22s ease}
.case-card:hover .case-body{transform:translateY(0)}
.case-body h3{font-size:17px;font-weight:600;line-height:1.5}
.case-meta{margin-top:8px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12px;color:rgba(255,255,255,.78)}
.case-arrow{width:28px;height:28px;border-radius:50%;background:rgba(255,255,255,.18);display:flex;align-items:center;justify-content:center}
.img-fallback{background:var(--grad-brand)}
.img-fallback::after{content:"九游j9官方网站";position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.92);font-weight:700;letter-spacing:.06em;font-size:14px}

/* 方案 */
.plan-sticky{position:static}
@media(min-width:1024px){.plan-sticky{position:sticky;top:96px}}
.plan-item{display:flex;gap:20px;padding:24px 0;border-bottom:1px solid var(--c-line)}
.plan-item:first-child{padding-top:0}
.plan-num{font-size:26px;line-height:1;font-weight:800;color:var(--c-brand-300);letter-spacing:-.02em;flex:0 0 auto;width:48px}
@media(min-width:768px){.plan-num{font-size:32px}}
.plan-item h3{font-size:17px;font-weight:600;color:var(--c-ink-900)}
.plan-item p{margin-top:8px;font-size:15px;color:var(--c-ink-500)}
.plan-points{margin-top:14px;display:flex;flex-wrap:wrap;gap:10px 18px}
.plan-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-ink-700)}
.plan-points li::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--c-brand);flex:0 0 auto}

/* 资讯列表 */
.feature-card{display:grid;gap:0;overflow:hidden;margin-bottom:26px}
@media(min-width:768px){.feature-card{grid-template-columns:minmax(0,1.05fr) minmax(0,1fr)}}
.feature-media{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--grad-brand)}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s cubic-bezier(.2,.7,.3,1)}
.feature-card:hover .feature-media img{transform:scale(1.04)}
.feature-body{padding:24px;display:flex;flex-direction:column}
@media(min-width:768px){.feature-body{padding:32px}}
.feature-body h3{margin-top:14px;font-size:20px;line-height:1.5;font-weight:700;color:var(--c-ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.feature-body h3 a:hover{color:var(--c-brand-600)}
.feature-body p{margin-top:12px;font-size:15px;color:var(--c-ink-500);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-grid{display:grid;gap:24px}
@media(min-width:640px){.news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.news-card{display:flex;flex-direction:column;overflow:hidden}
.news-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--grad-brand)}
.news-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s cubic-bezier(.2,.7,.3,1)}
.news-card:hover .news-media img{transform:scale(1.04)}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1 1 auto}
.news-body h3{margin-top:12px;font-size:16px;line-height:24px;font-weight:600;color:var(--c-ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body h3 a:hover{color:var(--c-brand-600)}
.news-body p{margin-top:10px;font-size:14px;color:var(--c-ink-500);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.meta-row{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--c-ink-500)}
.read-more{color:var(--c-brand-600);font-weight:600;font-size:13px}
.read-more:hover{color:var(--c-brand)}
.empty-state{min-height:230px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  text-align:center;border:1px dashed var(--c-line);border-radius:16px;background:#fff;padding:32px}
.empty-state p{font-size:15px;color:var(--c-ink-500)}
.list-foot{margin-top:26px;display:flex;justify-content:center}

/* FAQ */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item:first-child{border-top:1px solid var(--c-line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 4px;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-ink-900);transition:color .18s}
.faq-q:hover{color:var(--c-brand-600)}
.faq-icon{width:22px;height:22px;flex:0 0 auto;position:relative;transition:transform .22s cubic-bezier(.2,.7,.3,1)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--c-brand-600);border-radius:2px}
.faq-icon::before{left:0;right:0;top:10px;height:2px}
.faq-icon::after{top:0;bottom:0;left:10px;width:2px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-panel{display:grid;grid-template-rows:0fr;transition:grid-template-rows .24s cubic-bezier(.2,.7,.3,1)}
.faq-panel>div{overflow:hidden}
.faq-item.is-open .faq-panel{grid-template-rows:1fr}
.faq-a{padding:0 4px 22px;font-size:15px;line-height:1.8;color:var(--c-ink-500)}

/* 联系 */
.contact-card{background:#fff;border:1px solid var(--c-line);border-radius:16px;box-shadow:var(--sh-1);padding:28px}
.contact-item{display:flex;gap:14px;align-items:flex-start;padding:14px 0;border-bottom:1px dashed var(--c-line)}
.contact-item:last-child{border-bottom:0;padding-bottom:0}
.contact-item dt{font-size:13px;color:var(--c-ink-500)}
.contact-item dd{margin:2px 0 0;font-size:15px;font-weight:600;color:var(--c-ink-900)}
.form-grid{display:grid;gap:16px}
@media(min-width:640px){.form-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.field{width:100%;border:1px solid var(--c-line);border-radius:12px;background:#fff;padding:12px 14px;font-size:15px;
  transition:border-color .18s,box-shadow .18s}
.field::placeholder{color:var(--c-ink-300)}
.field:focus{outline:none;border-color:var(--c-brand);box-shadow:0 0 0 3px rgba(108,76,241,.18)}
.field-label{display:block;font-size:13px;font-weight:600;color:var(--c-ink-700);margin-bottom:8px}
.form-note{font-size:12px;color:var(--c-ink-500)}

/* CTA 条 */
.cta-band{background:var(--grad-brand);border-radius:20px;padding:32px;display:flex;flex-direction:column;gap:20px;color:#fff;
  box-shadow:0 24px 60px -30px rgba(108,76,241,.85)}
@media(min-width:768px){.cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:40px}}
.cta-band h2{font-size:22px;line-height:30px;font-weight:700}
@media(min-width:768px){.cta-band h2{font-size:26px;line-height:34px}}
.cta-band p{margin-top:8px;font-size:15px;color:rgba(255,255,255,.86)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto}
.btn-light{background:#fff;color:var(--c-brand-600);border-color:#fff}
.btn-light:hover{transform:translateY(-2px);filter:brightness(1.02)}

/* 页脚 */
.site-footer{background:var(--grad-hero);color:rgba(255,255,255,.9);border-top:1px solid rgba(255,255,255,.16);padding-top:64px}
.footer-grid{display:grid;gap:36px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand{font-size:18px;font-weight:800;color:#fff}
.footer-desc{margin-top:12px;font-size:14px;color:rgba(255,255,255,.72);max-width:300px}
.qr-box{margin-top:18px;width:96px;height:96px;border-radius:14px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.24);
  display:flex;align-items:center;justify-content:center;text-align:center;font-size:12px;color:rgba(255,255,255,.7);padding:8px}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-list a{font-size:14px;color:rgba(255,255,255,.72);transition:color .18s}
.footer-list a:hover{color:#fff}
.footer-contact{display:flex;flex-direction:column;gap:12px;font-size:14px;color:rgba(255,255,255,.72)}
.footer-contact strong{color:#fff;font-weight:600}
.footer-bottom{margin-top:48px;padding:22px 0;border-top:1px solid rgba(255,255,255,.16);display:flex;flex-direction:column;gap:10px;
  font-size:12.5px;color:rgba(255,255,255,.6)}
@media(min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}}
.footer-bottom-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom-links a:hover{color:#fff}

/* 返回顶部 */
.to-top{position:fixed;right:20px;bottom:24px;z-index:70;width:48px;height:48px;border-radius:50%;background:var(--grad-brand);color:#fff;
  display:flex;align-items:center;justify-content:center;box-shadow:0 16px 34px -16px rgba(108,76,241,.9);
  opacity:0;transform:translateY(10px);pointer-events:none;transition:opacity .22s,transform .22s}
.to-top.is-show{opacity:1;transform:translateY(0);pointer-events:auto}
.to-top:hover{filter:brightness(1.06)}

@media(prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --c-brand:#6C4CF1;
  --c-brand-600:#5B37E8;
  --c-brand-300:#B7A5FF;
  --c-brand-050:#F1ECFF;
  --c-accent:#B4F04A;
  --c-accent-ink:#2A3B00;
  --c-warn:#FF6B4A;
  --c-ink-900:#14101F;
  --c-ink-700:#2C2540;
  --c-ink-500:#6E6785;
  --c-ink-300:#A79FBF;
  --c-bg:#F7F5FC;
  --c-surface:#FFFFFF;
  --c-line:#E8E3F5;
  --c-hero-from:#1B1330;
  --c-hero-to:#3A1F6E;
  --grad-brand:linear-gradient(120deg,#6C4CF1 0%,#A64CF1 55%,#FF6B9A 100%);
  --grad-hero:linear-gradient(135deg,#1B1330 0%,#3A1F6E 100%);
  --sh-1:0 1px 2px rgba(20,16,31,.05);
  --sh-2:0 16px 40px -16px rgba(20,16,31,.18);
  --r-card:16px;
  --r-btn:12px;
  --r-img:14px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink-700);
  background:var(--c-bg);
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p{margin:0}
::selection{background:var(--c-brand-300);color:var(--c-ink-900)}
:focus-visible{outline:3px solid rgba(108,76,241,.35);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 24px}}

/* ============ 顶部阅读进度 ============ */
.read-progress{
  position:fixed;top:0;left:0;height:3px;width:0;z-index:80;
  background:var(--grad-brand);
  transition:width .1s linear;
}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:70;
  background:rgba(255,255,255,.06);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.18);
  box-shadow:0 12px 34px -24px rgba(9,4,24,.9);
  transition:background .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.site-header .nav-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  height:72px;transition:height .2s ease;
}
.site-header.is-scrolled{
  background:#FFFFFF;
  border-bottom:1px solid var(--c-line);
  box-shadow:var(--sh-2);
  -webkit-backdrop-filter:none;backdrop-filter:none;
}
.site-header.is-scrolled .nav-inner{height:64px}

.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:var(--grad-brand);color:#fff;box-shadow:0 8px 20px -12px rgba(108,76,241,.9);
}
.brand-name{
  font-size:18px;font-weight:700;letter-spacing:-.01em;color:#fff;
  transition:color .2s ease;white-space:nowrap;
}
.site-header.is-scrolled .brand-name{color:var(--c-ink-900)}

.nav-links{display:none}
@media(min-width:1024px){.nav-links{display:flex;align-items:center;gap:4px}}
.nav-link{
  position:relative;padding:8px 14px;border-radius:999px;
  font-size:15px;font-weight:500;color:rgba(255,255,255,.86);
  transition:background .18s ease,color .18s ease;
}
.nav-link:hover{background:rgba(255,255,255,.14);color:#fff}
.nav-link.is-active{background:rgba(255,255,255,.18);color:#fff}
.site-header.is-scrolled .nav-link{color:var(--c-ink-700)}
.site-header.is-scrolled .nav-link:hover{background:var(--c-brand-050);color:var(--c-brand-600)}
.site-header.is-scrolled .nav-link.is-active{background:var(--c-brand-050);color:var(--c-brand-600)}

.nav-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:40px;height:40px;border-radius:999px;display:none;place-items:center;
  border:1px solid rgba(255,255,255,.28);color:#fff;
  transition:background .18s ease,border-color .18s ease,color .18s ease;
}
@media(min-width:640px){.icon-btn{display:grid}}
.icon-btn:hover{background:rgba(255,255,255,.16)}
.site-header.is-scrolled .icon-btn{color:var(--c-ink-700);border-color:var(--c-line)}
.site-header.is-scrolled .icon-btn:hover{background:var(--c-brand-050);border-color:var(--c-brand-300);color:var(--c-brand-600)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-weight:600;font-size:15px;
  padding:12px 24px;line-height:1;
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s ease,filter .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 14px 30px -16px rgba(108,76,241,.85)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border:1px solid rgba(255,255,255,.45);color:#fff;background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.14);transform:translateY(-2px)}
.btn-outline{border:1px solid var(--c-line);background:#fff;color:var(--c-ink-900)}
.btn-outline:hover{border-color:var(--c-brand);color:var(--c-brand-600);transform:translateY(-2px)}

.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-brand);font-weight:600;font-size:14px}
.link-arrow svg{transition:transform .18s ease}
.link-arrow:hover svg{transform:translateX(3px)}

.hamburger{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;gap:4px;
  border:1px solid rgba(255,255,255,.3);color:#fff;
}
.hamburger span{display:block;width:18px;height:1.6px;background:currentColor;border-radius:2px}
@media(min-width:1024px){.hamburger{display:none}}
.site-header.is-scrolled .hamburger{color:var(--c-ink-900);border-color:var(--c-line)}

/* 移动端抽屉 */
.drawer{
  position:fixed;inset:0;z-index:90;
  background:rgba(20,16,31,.96);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  padding:24px 22px 32px;
  display:flex;flex-direction:column;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s ease;
}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-title{font-size:17px;font-weight:700;color:#fff}
.drawer-close{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;border:1px solid rgba(255,255,255,.28);color:#fff;font-size:22px}
.drawer-links{display:flex;flex-direction:column}
.drawer-links a{
  font-size:18px;line-height:56px;color:rgba(255,255,255,.9);
  border-bottom:1px solid rgba(255,255,255,.12);
  opacity:0;transform:translateY(8px);
}
.drawer.is-open .drawer-links a{animation:drawerIn .3s ease forwards}
.drawer.is-open .drawer-links a:nth-child(1){animation-delay:.04s}
.drawer.is-open .drawer-links a:nth-child(2){animation-delay:.09s}
.drawer.is-open .drawer-links a:nth-child(3){animation-delay:.14s}
.drawer.is-open .drawer-links a:nth-child(4){animation-delay:.19s}
.drawer.is-open .drawer-links a:nth-child(5){animation-delay:.24s}
@keyframes drawerIn{to{opacity:1;transform:translateY(0)}}
.drawer-foot{margin-top:auto;padding-top:24px}
.drawer-contact{margin-top:14px;font-size:13px;line-height:1.9;color:rgba(255,255,255,.62)}

/* ============ 文章头 ============ */
.post-hero{
  position:relative;overflow:hidden;color:#fff;
  padding:136px 0 64px;
  background-image:linear-gradient(135deg,rgba(27,19,48,.92) 0%,rgba(58,31,110,.84) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.post-hero::after{
  content:"";position:absolute;right:-120px;top:-80px;width:460px;height:460px;border-radius:50%;
  border:1px solid rgba(255,255,255,.18);
  box-shadow:0 0 0 60px rgba(255,255,255,.05),0 0 0 140px rgba(255,255,255,.035);
  opacity:.5;pointer-events:none;
}
.post-head{position:relative;z-index:2;max-width:800px;margin:0 auto;padding-left:20px;border-left:2px solid var(--c-brand-300)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.66)}
.breadcrumb a{color:rgba(255,255,255,.82);transition:color .18s ease}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{color:rgba(255,255,255,.42)}
.breadcrumb .current{color:#fff;font-weight:500;max-width:240px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.post-title{
  margin:18px 0 16px;font-size:30px;line-height:1.32;font-weight:700;letter-spacing:-.01em;color:#fff;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
@media(min-width:768px){.post-title{font-size:38px}}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:rgba(255,255,255,.76)}
.post-meta .meta-sep{width:1px;height:12px;background:rgba(255,255,255,.3)}
.share-group{display:flex;align-items:center;gap:8px;margin-left:auto}
.share-btn{
  width:32px;height:32px;border-radius:999px;display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.28);color:#fff;
  transition:background .18s ease,transform .18s ease,border-color .18s ease;
}
.share-btn:hover{background:rgba(255,255,255,.18);transform:translateY(-2px);border-color:rgba(255,255,255,.5)}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12px;line-height:1.5;
  background:var(--c-brand-050);color:var(--c-brand-600);font-weight:600;
}
.badge-ghost{background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.24)}
.badge-accent{background:var(--c-accent);color:var(--c-accent-ink)}

/* ============ 主体布局 ============ */
.layout{padding:44px 0 84px}
@media(min-width:1024px){
  .layout{
    display:grid;grid-template-columns:minmax(0,1fr) 220px;
    gap:56px;max-width:1120px;margin:0 auto;padding:56px 0 96px;
  }
}
.main-col{min-width:0}

.anchor-bar{
  display:flex;gap:8px;overflow-x:auto;padding:0 0 14px;margin-bottom:26px;
  border-bottom:1px solid var(--c-line);
  scrollbar-width:none;
}
.anchor-bar::-webkit-scrollbar{display:none}
.anchor-bar .chip{
  flex:0 0 auto;padding:7px 14px;border-radius:999px;font-size:13px;
  background:#fff;border:1px solid var(--c-line);color:var(--c-ink-500);white-space:nowrap;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.anchor-bar .chip:hover{background:var(--c-brand-050);color:var(--c-brand-600);border-color:var(--c-brand-300)}
@media(min-width:1024px){.anchor-bar{display:none}}

.side-col{display:none}
@media(min-width:1024px){
  .side-col{display:block}
  .toc-box{position:sticky;top:96px;border-left:1px solid var(--c-line);padding-left:20px}
  .toc-title{font-size:13px;font-weight:700;letter-spacing:.04em;color:var(--c-ink-500);margin-bottom:14px}
  .toc-list{display:flex;flex-direction:column;gap:10px}
  .toc-link{font-size:14px;line-height:1.5;color:var(--c-ink-500);transition:color .18s ease}
  .toc-link.toc-sub{padding-left:12px;font-size:13px;color:var(--c-ink-300)}
  .toc-link:hover{color:var(--c-brand-600)}
  .toc-link.is-current{color:var(--c-brand-600);font-weight:700}
}

/* ============ 正文长文 ============ */
.article-body{
  max-width:800px;font-size:17px;line-height:1.9;color:var(--c-ink-700);
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:32px 24px;box-shadow:var(--sh-1);
}
@media(min-width:768px){.article-body{padding:48px 44px}}
.article-body p{margin:0 0 1.25em}
.article-body h2{
  font-size:22px;font-weight:600;line-height:1.45;color:var(--c-ink-900);
  margin:2.2em 0 .8em;padding-left:12px;border-left:4px solid var(--c-brand);
  letter-spacing:-.01em;
}
@media(min-width:768px){.article-body h2{font-size:24px}}
.article-body h3{font-size:19px;font-weight:600;line-height:1.5;color:var(--c-ink-900);margin:1.8em 0 .6em}
.article-body h4{font-size:17px;font-weight:600;color:var(--c-ink-900);margin:1.5em 0 .5em}
.article-body ul,.article-body ol{margin:0 0 1.25em;padding-left:1.4em}
.article-body li{margin:.45em 0}
.article-body ul{list-style:none;padding-left:1.4em}
.article-body ul>li{position:relative}
.article-body ul>li::before{
  content:"";position:absolute;left:-1.1em;top:.72em;width:7px;height:7px;border-radius:2px;
  background:var(--c-brand);
}
.article-body ol{list-style:decimal}
.article-body ol>li::marker{color:var(--c-brand);font-weight:600}
.article-body a{color:var(--c-brand);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--c-brand-600)}
.article-body blockquote{
  margin:1.7em 0;padding:18px 22px;border-left:3px solid var(--c-accent);
  background:var(--c-brand-050);border-radius:16px;font-size:16px;color:var(--c-ink-700);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:1.6em auto;height:auto}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--c-ink-500);text-align:center;margin-top:.6em}
.article-body pre{
  background:var(--c-brand-050);border:1px solid var(--c-line);border-radius:12px;
  padding:16px 18px;overflow-x:auto;font-size:14px;line-height:1.7;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  background:var(--c-brand-050);padding:2px 6px;border-radius:6px;font-size:.92em;
}
.article-body pre code{background:none;padding:0}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:1.6em 0;display:block;overflow-x:auto;white-space:nowrap}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:10px 14px;text-align:left}
.article-body thead th{background:var(--c-brand-050);color:var(--c-ink-900);font-weight:600}
.article-body tbody tr:nth-child(even){background:#FBFAFE}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:2.4em 0}

.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;text-align:center;padding:44px 24px;background:#fff;
  border:1px dashed var(--c-line);border-radius:var(--r-card);
}
.empty-state h2{font-size:20px;font-weight:600;color:var(--c-ink-900);border:0;padding:0;margin:0}
.empty-state p{font-size:14px;color:var(--c-ink-500);margin:0}

/* ============ 文末区 ============ */
.post-foot{max-width:800px;margin-top:40px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:28px}
.tag-row .tag-label{font-size:13px;color:var(--c-ink-500);margin-right:4px}
.tag{padding:6px 14px;border-radius:999px;background:var(--c-brand-050);color:var(--c-brand-600);font-size:12.5px;font-weight:500}
.tag:hover{background:#E7DEFF}

.post-nav{display:grid;gap:16px;margin-bottom:36px}
@media(min-width:640px){.post-nav{grid-template-columns:1fr 1fr}}
.post-nav-card{
  display:block;padding:20px;border-radius:var(--r-card);background:#fff;
  border:1px solid var(--c-line);box-shadow:var(--sh-1);
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s ease,border-color .18s ease;
}
.post-nav-card:not(.is-disabled):hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--c-brand-300)}
.post-nav-card.is-disabled{background:#FAF9FE;border-style:dashed;cursor:not-allowed}
.pn-label{display:block;font-size:12px;color:var(--c-ink-500);margin-bottom:8px}
.pn-title{
  display:block;font-size:15px;font-weight:600;color:var(--c-ink-900);line-height:1.5;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.post-nav-card.is-disabled .pn-title{color:var(--c-ink-300);font-weight:500}

.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin:0 0 20px}
.section-head h2{font-size:20px;font-weight:700;color:var(--c-ink-900);letter-spacing:-.01em;display:flex;align-items:center;gap:10px}
.section-head h2::before{content:"";width:4px;height:18px;border-radius:2px;background:var(--c-brand)}

.related-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:640px){.related-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.related-grid{grid-template-columns:repeat(3,1fr)}}
.card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s ease,border-color .18s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--c-brand-300)}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:linear-gradient(135deg,#EFE9FF 0%,#DCD2FF 100%)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s cubic-bezier(.2,.7,.3,1)}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{
  font-size:16px;font-weight:600;line-height:1.55;color:var(--c-ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-desc{
  font-size:13.5px;line-height:1.75;color:var(--c-ink-500);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;padding-top:12px;display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--c-ink-500);border-top:1px solid var(--c-line);
}
.card-foot .arrow{color:var(--c-brand);transition:transform .18s ease}
.card:hover .card-foot .arrow{transform:translateX(3px)}

.foot-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:34px}

/* ============ 返回顶部 & 提示 ============ */
.to-top{
  position:fixed;right:20px;bottom:24px;width:48px;height:48px;border-radius:50%;
  display:grid;place-items:center;background:var(--grad-brand);color:#fff;z-index:60;
  box-shadow:0 18px 34px -18px rgba(108,76,241,.95);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s ease;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{filter:brightness(1.06)}
@media(min-width:768px){.to-top{right:28px;bottom:32px}}

.toast{
  position:fixed;left:50%;bottom:36px;transform:translate(-50%,12px);
  padding:11px 20px;border-radius:999px;background:var(--c-ink-900);color:#fff;
  font-size:13.5px;z-index:95;opacity:0;visibility:hidden;
  transition:opacity .22s ease,transform .22s ease,visibility .22s ease;
}
.toast.is-show{opacity:1;visibility:visible;transform:translate(-50%,0)}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;background:var(--grad-hero);color:rgba(255,255,255,.9);
  margin-top:20px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:rgba(255,255,255,.22);
}
.footer-grid{display:grid;gap:34px;grid-template-columns:1fr;padding:56px 0 34px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:32px}}
.footer-brand{font-size:20px;font-weight:700;color:#fff;letter-spacing:-.01em}
.footer-desc{margin-top:12px;font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.7);max-width:290px}
.qr-box{
  margin-top:18px;width:96px;height:96px;border-radius:12px;
  border:1px dashed rgba(255,255,255,.35);display:grid;place-items:center;
  text-align:center;font-size:12px;line-height:1.6;color:rgba(255,255,255,.66);
}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-list a{font-size:13.5px;color:rgba(255,255,255,.72);transition:color .18s ease}
.footer-list a:hover{color:#fff}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:13.5px;color:rgba(255,255,255,.72)}
.footer-contact strong{color:#fff;font-weight:600}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  padding:18px 0 26px;border-top:1px solid rgba(255,255,255,.15);
  font-size:12.5px;color:rgba(255,255,255,.6);
}
.footer-bottom-links{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom-links a{color:rgba(255,255,255,.6);transition:color .18s ease}
.footer-bottom-links a:hover{color:#fff}

@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --c-brand:#6C4CF1;
  --c-brand-600:#5B37E8;
  --c-brand-300:#B7A5FF;
  --c-brand-050:#F1ECFF;
  --c-accent:#B4F04A;
  --c-accent-ink:#2A3B00;
  --c-warn:#FF6B4A;
  --c-ink-900:#14101F;
  --c-ink-700:#2C2540;
  --c-ink-500:#6E6785;
  --c-ink-300:#A79FBF;
  --c-bg:#F7F5FC;
  --c-surface:#FFFFFF;
  --c-line:#E8E3F5;
  --c-hero-from:#1B1330;
  --c-hero-to:#3A1F6E;
  --grad-brand:linear-gradient(120deg,#6C4CF1 0%,#A64CF1 55%,#FF6B9A 100%);
  --grad-hero:linear-gradient(135deg,var(--c-hero-from) 0%,var(--c-hero-to) 100%);
  --sh-1:0 1px 2px rgba(20,16,31,.05);
  --sh-2:0 16px 40px -16px rgba(20,16,31,.18);
  --r-card:16px;
  --r-btn:12px;
  --r-img:14px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink-900);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;line-height:1.3}
p{margin:0}
input,select,textarea{font:inherit;color:inherit}
.num{font-variant-numeric:tabular-nums}

.container{max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){.container{padding-left:24px;padding-right:24px}}
@media (min-width:1280px){.container{max-width:1240px}}

.section{padding:88px 0}
.section--tight{padding:64px 0}
@media (max-width:640px){
  .section{padding:52px 0}
  .section--tight{padding:40px 0}
}
.section--alt{background:#F2EFFA}
.section--white{background:var(--c-surface)}

.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.sec-title{
  position:relative;padding-left:14px;
  font-size:28px;font-weight:700;color:var(--c-ink-900);
}
.sec-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:999px;
  background:var(--grad-brand);
}
.sec-sub{margin-top:10px;color:var(--c-ink-500);font-size:15px;max-width:640px}
@media (max-width:640px){
  .sec-title{font-size:22px}
  .sec-head{flex-direction:column;align-items:flex-start;margin-bottom:24px}
}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;font-size:15px;font-weight:600;
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s,background-color .18s,border-color .18s,color .18s;
  white-space:nowrap;
}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(108,76,241,.3)}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 10px 22px -12px rgba(108,76,241,.85)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.6)}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-outline{
  background:var(--c-surface);color:var(--c-ink-900);border:1px solid var(--c-line);
}
.btn-outline:hover{border-color:var(--c-brand);color:var(--c-brand)}
.btn-sm{padding:9px 18px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-brand);font-weight:600;font-size:15px}
.link-arrow svg{transition:transform .18s}
.link-arrow:hover svg{transform:translateX(3px)}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(108,76,241,.1);color:var(--c-brand);
}
.badge-accent{background:var(--c-accent);color:var(--c-accent-ink)}

/* 图标方块 */
.icon-box{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(108,76,241,.1);color:var(--c-brand);flex:0 0 auto;
}
.icon-box svg{width:22px;height:22px;stroke-width:1.6}

/* 导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  background:rgba(255,255,255,.06);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.18);
  box-shadow:0 4px 24px -18px rgba(0,0,0,.5);
  transition:background-color .2s ease,border-color .2s ease,box-shadow .2s ease,height .2s ease;
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px;transition:height .2s ease}
.site-header.is-scrolled{background:#FFFFFF;border-bottom-color:var(--c-line);box-shadow:var(--sh-2)}
.site-header.is-scrolled .nav-inner{height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:11px;background:var(--grad-brand);
  display:flex;align-items:center;justify-content:center;color:#fff;flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px;stroke-width:1.8}
.brand-text{font-size:17px;font-weight:800;color:#fff;transition:color .2s ease;letter-spacing:-.01em}
.site-header.is-scrolled .brand-text{color:var(--c-ink-900)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;padding:8px 14px;border-radius:999px;font-size:15px;font-weight:500;
  color:rgba(255,255,255,.92);transition:background-color .18s,color .18s;
}
.nav-link:hover{background:rgba(255,255,255,.14)}
.nav-link.is-active{background:rgba(255,255,255,.18);font-weight:600}
.site-header.is-scrolled .nav-link{color:var(--c-ink-700)}
.site-header.is-scrolled .nav-link:hover{background:var(--c-brand-050);color:var(--c-brand)}
.site-header.is-scrolled .nav-link.is-active{background:var(--c-brand-050);color:var(--c-brand);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  color:rgba(255,255,255,.92);transition:background-color .18s,color .18s;
}
.icon-btn:hover{background:rgba(255,255,255,.14)}
.site-header.is-scrolled .icon-btn{color:var(--c-ink-700)}
.site-header.is-scrolled .icon-btn:hover{background:var(--c-brand-050);color:var(--c-brand)}
.icon-btn svg{width:20px;height:20px;stroke-width:1.6}
.burger{display:none;width:40px;height:40px;border-radius:12px;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.burger span{display:block;width:18px;height:1.8px;border-radius:2px;background:#fff;transition:background-color .2s,transform .2s}
.site-header.is-scrolled .burger span{background:var(--c-ink-900)}
.burger:hover{background:rgba(255,255,255,.14)}
.site-header.is-scrolled .burger:hover{background:var(--c-brand-050)}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:80;background:rgba(20,16,31,.96);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  display:flex;flex-direction:column;padding:22px 22px 32px;
  opacity:0;visibility:hidden;transform:translateY(-12px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s;
}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-close{width:40px;height:40px;border-radius:12px;color:#fff;display:flex;align-items:center;justify-content:center}
.drawer-close:hover{background:rgba(255,255,255,.12)}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{
  color:rgba(255,255,255,.92);font-size:18px;line-height:56px;border-bottom:1px solid rgba(255,255,255,.1);
  transition:color .18s,padding-left .18s;
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--c-accent);padding-left:6px}
.drawer-foot{margin-top:auto;padding-top:24px;color:rgba(255,255,255,.7);font-size:14px;display:flex;flex-direction:column;gap:10px}
.drawer-foot .btn{align-self:flex-start;margin-top:8px}
@media (max-width:1023px){
  .nav-links{display:none}
  .burger{display:flex}
  .nav-actions .btn{display:none}
}

/* 顶部横幅 */
.banner{
  position:relative;overflow:hidden;
  min-height:320px;
  display:flex;align-items:flex-end;
  padding:120px 0 56px;
  background-color:var(--c-hero-from);
  background-image:var(--grad-hero);
}
.banner-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.42;
}
.banner-mask{
  position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(27,19,48,.92) 0%,rgba(58,31,110,.78) 60%,rgba(58,31,110,.62) 100%);
}
.banner-deco{
  position:absolute;right:-120px;top:-80px;width:520px;height:520px;border-radius:50%;
  border:1px solid rgba(255,255,255,.18);opacity:.18;pointer-events:none;
}
.banner-deco::after{
  content:"";position:absolute;inset:70px;border-radius:50%;border:1px solid rgba(255,255,255,.2);
}
.banner-inner{position:relative;z-index:2;max-width:800px}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.66);margin-bottom:18px;flex-wrap:wrap}
.crumb a:hover{color:#fff}
.crumb .sep{color:rgba(255,255,255,.4)}
.crumb .current{color:#fff;font-weight:500}
.banner h1{
  font-size:36px;font-weight:800;color:#fff;letter-spacing:-.01em;
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
}
@media (max-width:768px){
  .banner{padding:104px 0 44px;min-height:280px}
  .banner h1{font-size:28px}
}
.banner-desc{margin-top:16px;color:rgba(255,255,255,.82);font-size:16px;line-height:1.8;max-width:700px}
.banner-tags{margin-top:22px;display:flex;gap:10px;flex-wrap:wrap}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:999px;font-size:13px;font-weight:500;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:#fff;
}
.chip .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent)}

/* 卖点条 */
.hl-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media (max-width:1023px){.hl-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.hl-grid{grid-template-columns:1fr}}
.hl-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s,border-color .18s;
}
.hl-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--c-brand-300)}
.hl-card h3{margin-top:16px;font-size:17px;font-weight:600}
.hl-card p{margin-top:8px;font-size:14px;color:var(--c-ink-500);line-height:1.75}

/* 主体：侧栏 + 网格 */
.layout{display:grid;grid-template-columns:240px 1fr;gap:32px;align-items:start}
@media (max-width:1023px){
  .layout{grid-template-columns:1fr;gap:24px}
  .filter-panel{position:static !important}
}
.filter-panel{
  position:sticky;top:96px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);
}
.filter-group + .filter-group{margin-top:22px;padding-top:20px;border-top:1px dashed var(--c-line)}
.filter-title{font-size:13px;font-weight:700;color:var(--c-ink-900);letter-spacing:.02em;margin-bottom:12px}
.filter-tags{display:flex;flex-wrap:wrap;gap:8px}
.f-tag{
  padding:6px 12px;border-radius:999px;font-size:13px;
  background:#F4F1FB;color:var(--c-ink-700);border:1px solid transparent;
  transition:background-color .18s,color .18s,border-color .18s;
}
.f-tag:hover{background:var(--c-brand-050);color:var(--c-brand);border-color:var(--c-brand-300)}
.f-tag.is-on{background:rgba(108,76,241,.1);color:var(--c-brand);font-weight:600;border-color:rgba(108,76,241,.25)}

.grid-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media (max-width:1279px){.grid-cards{grid-template-columns:repeat(2,1fr)}}
@media (max-width:639px){.grid-cards{grid-template-columns:1fr}}

.card{
  display:flex;flex-direction:column;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s,border-color .18s;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--c-brand-300)}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--c-brand-050)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s cubic-bezier(.2,.7,.3,1)}
.card:hover .card-media img{transform:scale(1.04)}
.card-media.is-fallback{background:var(--grad-brand);display:flex;align-items:center;justify-content:center}
.card-media.is-fallback::before{content:"九游j9官方网站";color:#fff;font-weight:700;font-size:14px;letter-spacing:.02em}
.card-body{padding:20px;display:flex;flex-direction:column;flex:1 1 auto;gap:10px}
.card-title{font-size:16.5px;font-weight:600;line-height:1.5;color:var(--c-ink-900);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card:hover .card-title{color:var(--c-brand)}
.card-text{font-size:14px;color:var(--c-ink-500);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--c-ink-300)
}
.card-meta .go{display:flex;align-items:center;gap:4px;color:var(--c-brand);font-weight:600}
.card-meta .go svg{width:16px;height:16px;stroke-width:1.8;transition:transform .18s}
.card:hover .card-meta .go svg{transform:translateX(3px)}

/* 分页 */
.pagination{display:flex;align-items:center;justify-content:flex-end;gap:8px;margin-top:32px;flex-wrap:wrap}
.page-btn{
  min-width:40px;height:40px;padding:0 14px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-ink-700);font-size:14px;font-weight:500;
  transition:border-color .18s,color .18s,background-color .18s;
}
.page-btn:hover{border-color:var(--c-brand);color:var(--c-brand)}
.page-btn.is-current{background:var(--c-brand);border-color:var(--c-brand);color:#fff;font-weight:700}
.page-btn.is-disabled{color:var(--c-ink-300);cursor:not-allowed}
.page-btn.is-disabled:hover{border-color:var(--c-line);color:var(--c-ink-300)}

/* 数据条 */
.stat-bar{
  background:var(--grad-hero);border-radius:var(--r-card);padding:32px 24px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;color:#fff;
  border-top:1px solid rgba(255,255,255,.18);
}
.stat-bar .st{text-align:center}
.stat-bar .st b{display:block;font-size:34px;font-weight:800;line-height:1.1;color:var(--c-accent);font-variant-numeric:tabular-nums}
.stat-bar .st span{display:block;margin-top:8px;font-size:14px;color:rgba(255,255,255,.75)}
@media (max-width:767px){
  .stat-bar{grid-template-columns:repeat(2,1fr);padding:24px 18px;gap:20px}
  .stat-bar .st b{font-size:26px}
}

/* 要点列表 */
.point-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media (max-width:1023px){.point-grid{grid-template-columns:1fr}}
.point-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:26px;
  box-shadow:var(--sh-1);transition:transform .18s,box-shadow .18s,border-color .18s;
}
.point-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--c-brand-300)}
.point-card h3{font-size:18px;font-weight:600;margin-bottom:12px}
.point-card p{font-size:14.5px;color:var(--c-ink-500)}
.point-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.point-list li{padding-left:18px;position:relative;font-size:14.5px;color:var(--c-ink-700)}
.point-list li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;background:var(--c-brand)}

/* FAQ */
.faq{max-width:880px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item:first-child{border-top:1px solid var(--c-line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;text-align:left;
  padding:22px 4px;
}
.faq-q h3{font-size:16px;font-weight:600;color:var(--c-ink-900)}
.faq-icon{position:relative;width:20px;height:20px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-brand);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .22s ease,opacity .22s ease;
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .26s cubic-bezier(.2,.7,.3,1)}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a-inner p{padding:0 4px 24px;font-size:15px;line-height:1.85;color:var(--c-ink-500)}
.faq-q:hover h3{color:var(--c-brand)}

/* CTA 条 */
.cta-strip{
  background:var(--grad-hero);border-radius:20px;padding:44px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.16);
}
.cta-strip h2{font-size:24px;font-weight:700;color:#fff}
.cta-strip p{margin-top:10px;color:rgba(255,255,255,.78);font-size:15px;max-width:560px}
.cta-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
@media (max-width:767px){
  .cta-strip{padding:30px 22px;border-radius:16px}
  .cta-strip h2{font-size:20px}
}

/* 页脚 */
.site-footer{
  background:var(--grad-hero);color:rgba(255,255,255,.9);
  border-top:1px solid rgba(255,255,255,.16);
  padding:68px 0 0;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:32px}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:639px){.footer-grid{grid-template-columns:1fr}}
.footer-brand{font-size:19px;font-weight:800;color:#fff;letter-spacing:-.01em}
.footer-desc{margin-top:12px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.7);max-width:300px}
.qr-box{
  margin-top:20px;width:96px;height:96px;border-radius:12px;
  border:1px dashed rgba(255,255,255,.35);display:flex;align-items:center;justify-content:center;
  text-align:center;font-size:12px;line-height:1.6;color:rgba(255,255,255,.62);
}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-list{display:flex;flex-direction:column;gap:11px}
.footer-list a{font-size:14px;color:rgba(255,255,255,.72);transition:color .18s}
.footer-list a:hover{color:var(--c-accent)}
.footer-contact{display:flex;flex-direction:column;gap:11px;font-size:14px;color:rgba(255,255,255,.72)}
.footer-contact strong{color:#fff;font-weight:600}
.footer-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid rgba(255,255,255,.16);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.6);
}
.footer-bottom-links{display:flex;gap:20px;flex-wrap:wrap}
.footer-bottom-links a:hover{color:var(--c-accent)}

.reveal{opacity:0;transform:translateY(8px);transition:opacity .5s ease,transform .5s ease}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --c-brand:#6C4CF1;
  --c-brand-600:#5B37E8;
  --c-brand-300:#B7A5FF;
  --c-brand-050:#F1ECFF;
  --c-accent:#B4F04A;
  --c-accent-ink:#2A3B00;
  --c-warn:#FF6B4A;
  --c-ink-900:#14101F;
  --c-ink-700:#2C2540;
  --c-ink-500:#6E6785;
  --c-ink-300:#A79FBF;
  --c-bg:#F7F5FC;
  --c-surface:#FFFFFF;
  --c-line:#E8E3F5;
  --c-hero-from:#1B1330;
  --c-hero-to:#3A1F6E;
  --grad-brand:linear-gradient(120deg,#6C4CF1 0%,#A64CF1 55%,#FF6B9A 100%);
  --grad-hero:linear-gradient(135deg,var(--c-hero-from) 0%,var(--c-hero-to) 100%);
  --sh-1:0 1px 2px rgba(20,16,31,.05);
  --sh-2:0 16px 40px -16px rgba(20,16,31,.18);
  --r-card:16px;
  --r-btn:12px;
  --r-img:14px;
  --t-fast:180ms cubic-bezier(.2,.7,.3,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:120px;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink-700);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
a{color:inherit;text-decoration:none;transition:color var(--t-fast),border-color var(--t-fast);}
img{display:block;max-width:100%;}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input,textarea,select{font-family:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(108,76,241,.32);border-radius:6px;}
.num{font-variant-numeric:tabular-nums;}

div.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:768px){
  div.container{padding:0 24px;}
}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  height:72px;
  display:flex;
  align-items:center;
  background:rgba(255,255,255,.06);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.18);
  transition:height 200ms cubic-bezier(.2,.7,.3,1),background 200ms ease,box-shadow 200ms ease,border-color 200ms ease;
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  width:100%;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.brand-mark{
  width:34px;height:34px;
  border-radius:10px;
  background:var(--grad-brand);
  display:grid;place-items:center;
  color:#fff;
  font-size:15px;
  font-weight:800;
  box-shadow:0 8px 18px -10px rgba(108,76,241,.9);
  flex:none;
}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  color:rgba(255,255,255,.88);
  font-size:15px;
  padding:8px 14px;
  border-radius:999px;
  transition:background var(--t-fast),color var(--t-fast);
}
.nav-link:hover{background:rgba(255,255,255,.16);color:#fff;}
.nav-link.is-active{background:rgba(255,255,255,.2);color:#fff;font-weight:600;}
.header-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:38px;height:38px;
  border-radius:50%;
  display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.3);
  color:#fff;
  transition:background var(--t-fast),border-color var(--t-fast),color var(--t-fast);
}
.icon-btn:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.6);}
.menu-toggle{
  display:none;
  width:38px;height:38px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.3);
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.menu-toggle span{
  display:block;
  width:18px;height:2px;
  border-radius:2px;
  background:#fff;
  transition:background var(--t-fast);
}

.site-header.is-scrolled{
  height:64px;
  background:#fff;
  border-bottom-color:var(--c-line);
  box-shadow:var(--sh-2);
}
.site-header.is-scrolled .brand{color:var(--c-ink-900);}
.site-header.is-scrolled .nav-link{color:var(--c-ink-700);}
.site-header.is-scrolled .nav-link:hover{background:var(--c-brand-050);color:var(--c-brand-600);}
.site-header.is-scrolled .nav-link.is-active{background:var(--c-brand-050);color:var(--c-brand-600);}
.site-header.is-scrolled .icon-btn{color:var(--c-ink-700);border-color:var(--c-line);}
.site-header.is-scrolled .icon-btn:hover{background:var(--c-brand-050);border-color:var(--c-brand-300);}
.site-header.is-scrolled .menu-toggle{border-color:var(--c-line);}
.site-header.is-scrolled .menu-toggle span{background:var(--c-ink-900);}

/* 移动端抽屉 */
.mobile-drawer{
  position:fixed;
  inset:0;
  z-index:90;
  display:none;
  flex-direction:column;
  padding:22px 24px 32px;
  background:rgba(20,16,31,.96);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
}
.mobile-drawer.is-open{display:flex;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-brand{color:#fff;font-size:17px;font-weight:700;}
.drawer-close{
  width:40px;height:40px;border-radius:12px;
  border:1px solid rgba(255,255,255,.3);
  color:#fff;display:grid;place-items:center;
}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  color:#fff;
  font-size:18px;
  line-height:56px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.drawer-nav a.is-active{color:var(--c-accent);}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:14px;}
.drawer-foot p{font-size:14px;color:rgba(255,255,255,.66);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  padding:14px 26px;
  border-radius:999px;
  border:1px solid transparent;
  transition:transform var(--t-fast),filter var(--t-fast),background var(--t-fast),color var(--t-fast),border-color var(--t-fast);
}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 14px 30px -16px rgba(108,76,241,.85);}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);}
.btn-soft{background:#fff;color:var(--c-ink-900);border-color:var(--c-line);}
.btn-soft:hover{border-color:var(--c-brand);color:var(--c-brand-600);transform:translateY(-2px);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55);}
.btn-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff;transform:translateY(-2px);}
.btn-sm{padding:10px 18px;font-size:14px;}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--c-brand);
  font-weight:600;
  font-size:15px;
}
.text-link svg{transition:transform var(--t-fast);}
.text-link:hover{color:var(--c-brand-600);}
.text-link:hover svg{transform:translateX(3px);}

/* ---------- 首屏 ---------- */
.page-hero{
  position:relative;
  padding:126px 0 76px;
  color:#fff;
  overflow:hidden;
  background:var(--grad-hero);
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(135deg,rgba(27,19,48,.9) 0%,rgba(58,31,110,.86) 100%),url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-140px;
  top:-120px;
  width:520px;height:520px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.16);
  box-shadow:0 0 0 70px rgba(255,255,255,.05),0 0 0 140px rgba(255,255,255,.035);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.66);
  margin-bottom:22px;
}
.crumb a:hover{color:#fff;}
.crumb .sep{color:rgba(255,255,255,.4);}
.crumb .current{color:#fff;font-weight:500;}

.hero-grid{
  display:grid;
  grid-template-columns:1.08fr .92fr;
  gap:52px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.24);
  color:#fff;
  font-size:13px;
  letter-spacing:.02em;
}
.eyebrow::before{
  content:"";
  width:7px;height:7px;border-radius:50%;
  background:var(--c-accent);
}
.hero-grid h1{
  margin:20px 0 16px;
  font-size:40px;
  line-height:1.2;
  font-weight:800;
  letter-spacing:-.01em;
  color:#fff;
}
.hero-lead{
  font-size:16px;
  line-height:1.85;
  color:rgba(255,255,255,.78);
  max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:22px;
  margin-top:32px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.16);
}
.hero-meta div{font-size:13px;color:rgba(255,255,255,.68);display:flex;align-items:center;gap:8px;}
.hero-meta b{color:#fff;font-size:16px;font-weight:700;font-variant-numeric:tabular-nums;}
.hero-meta i{
  display:block;width:6px;height:6px;border-radius:50%;
  background:var(--c-accent);font-style:normal;
}
.hero-visual{position:relative;}
.hero-visual-img{
  border-radius:20px;
  overflow:hidden;
  aspect-ratio:5/4;
  box-shadow:0 40px 70px -36px rgba(0,0,0,.7);
  background:var(--grad-brand);
}
.hero-visual-img img{width:100%;height:100%;object-fit:cover;}
.hero-badge{
  position:absolute;
  right:-8px;
  bottom:-10px;
  background:#fff;
  color:var(--c-ink-900);
  border-radius:16px;
  padding:16px 20px;
  box-shadow:var(--sh-2);
  display:flex;
  flex-direction:column;
  gap:2px;
  min-width:150px;
}
.hero-badge .num{font-size:24px;font-weight:800;line-height:1.2;color:var(--c-brand);}
.hero-badge .label{font-size:12.5px;color:var(--c-ink-500);}

.img-fallback{background:var(--grad-brand);position:relative;}
.img-fallback::after{
  content:"九游j9官方网站";
  position:absolute;
  inset:0;
  display:grid;
  place-items:center;
  color:#fff;
  font-size:14px;
  font-weight:600;
  letter-spacing:.04em;
}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  position:sticky;
  top:64px;
  z-index:50;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
}
.anchor-inner{
  display:flex;
  gap:10px;
  padding:14px 0;
  overflow-x:auto;
  scrollbar-width:none;
}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-chip{
  flex:none;
  padding:9px 20px;
  border-radius:999px;
  font-size:14px;
  font-weight:600;
  color:var(--c-ink-700);
  background:var(--c-brand-050);
  transition:background var(--t-fast),color var(--t-fast);
}
.anchor-chip:hover{background:var(--c-brand-300);color:var(--c-ink-900);}
.anchor-chip.is-active{background:var(--c-brand);color:#fff;}

/* ---------- 板块 ---------- */
.section{padding:88px 0;}
.section--white{background:#fff;}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head h2{
  font-size:28px;
  line-height:1.3;
  font-weight:700;
  color:var(--c-ink-900);
  letter-spacing:-.01em;
  padding-left:14px;
  position:relative;
}
.sec-head h2::before{
  content:"";
  position:absolute;
  left:0;top:6px;bottom:6px;
  width:4px;
  border-radius:4px;
  background:var(--c-brand);
}
.sec-head p{margin-top:14px;font-size:15.5px;color:var(--c-ink-500);}

/* 图文交替 */
.feature-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.feature-row + .feature-row{margin-top:72px;}
.feature-row.is-reverse .feature-media{order:-1;}
.feature-text h3{
  font-size:22px;
  line-height:1.4;
  font-weight:700;
  color:var(--c-ink-900);
  margin-bottom:14px;
  letter-spacing:-.01em;
}
.feature-text p{font-size:15.5px;line-height:1.85;color:var(--c-ink-700);}
.point-list{margin-top:20px;display:flex;flex-direction:column;gap:12px;}
.point-list li{
  position:relative;
  padding-left:22px;
  font-size:15px;
  line-height:1.7;
  color:var(--c-ink-700);
}
.point-list li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:8px;height:8px;
  border-radius:2px;
  background:var(--c-brand);
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px;}
.tag{
  display:inline-flex;
  align-items:center;
  padding:6px 14px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  color:var(--c-brand);
  background:var(--c-brand-050);
}
.tag--accent{background:var(--c-accent);color:var(--c-accent-ink);}

.media{
  border-radius:var(--r-card);
  overflow:hidden;
  aspect-ratio:16/11;
  box-shadow:var(--sh-2);
  background:var(--grad-brand);
}
.media img{width:100%;height:100%;object-fit:cover;transition:transform 320ms cubic-bezier(.2,.7,.3,1);}
.media:hover img{transform:scale(1.04);}

/* 数据条 */
.stat-band{
  margin:72px auto;
  border-radius:var(--r-card);
  background:var(--grad-hero);
  color:#fff;
  padding:38px 24px;
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
  position:relative;
  overflow:hidden;
}
.stat-band::after{
  content:"";
  position:absolute;
  left:-90px;bottom:-140px;
  width:320px;height:320px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 0 0 50px rgba(255,255,255,.04);
}
.stat-item{text-align:center;position:relative;z-index:1;}
.stat-item + .stat-item{border-left:1px solid rgba(255,255,255,.16);}
.stat-item .value{
  display:block;
  font-size:36px;
  font-weight:800;
  line-height:1.1;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
}
.stat-item .value em{font-style:normal;font-size:18px;margin-left:2px;color:var(--c-accent);}
.stat-item .label{display:block;margin-top:10px;font-size:14px;color:rgba(255,255,255,.7);}

/* 小卡网格 */
.mini-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
  margin-top:36px;
}
.mini-card{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:transform var(--t-fast),box-shadow var(--t-fast),border-color var(--t-fast);
}
.mini-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--c-brand-300);}
.mini-card .mini-icon{
  width:40px;height:40px;
  border-radius:12px;
  background:rgba(108,76,241,.12);
  color:var(--c-brand);
  display:grid;place-items:center;
  margin-bottom:16px;
}
.mini-card h3{font-size:16.5px;font-weight:600;color:var(--c-ink-900);margin-bottom:8px;}
.mini-card p{font-size:14.5px;line-height:1.8;color:var(--c-ink-500);}

/* FAQ */
.faq{max-width:880px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item:first-child{border-top:1px solid var(--c-line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:22px 4px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--c-ink-900);
}
.faq-q:hover{color:var(--c-brand-600);}
.faq-icon{
  flex:none;
  width:26px;height:26px;
  border-radius:50%;
  background:var(--c-brand-050);
  color:var(--c-brand);
  display:grid;place-items:center;
  transition:transform 220ms cubic-bezier(.2,.7,.3,1),background var(--t-fast),color var(--t-fast);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--c-brand);color:#fff;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 260ms cubic-bezier(.2,.7,.3,1);
}
.faq-a-inner{
  padding:0 4px 24px;
  font-size:15px;
  line-height:1.85;
  color:var(--c-ink-500);
  max-width:760px;
}

/* CTA */
.cta-band{
  border-radius:20px;
  background:var(--grad-brand);
  color:#fff;
  padding:52px 40px;
  text-align:center;
  position:relative;
  overflow:hidden;
}
.cta-band h2{font-size:28px;font-weight:700;letter-spacing:-.01em;line-height:1.3;}
.cta-band p{margin-top:14px;font-size:15.5px;color:rgba(255,255,255,.85);}
.cta-actions{
  margin-top:28px;
  display:flex;
  flex-wrap:wrap;
  gap:16px;
  justify-content:center;
  align-items:center;
}
.cta-actions .btn-soft{background:#fff;color:var(--c-brand-600);border-color:transparent;}
.cta-actions .btn-soft:hover{color:var(--c-ink-900);}
.cta-note{margin-top:20px;font-size:13px;color:rgba(255,255,255,.72);}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;
  background:var(--grad-hero);
  color:rgba(255,255,255,.9);
  padding:64px 0 0;
  border-top:1px solid rgba(255,255,255,.2);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:34px;
}
.footer-brand{font-size:19px;font-weight:700;color:#fff;letter-spacing:-.01em;}
.footer-desc{
  margin-top:12px;
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.7);
  max-width:290px;
}
.qr-box{
  width:96px;height:96px;
  margin-top:18px;
  border-radius:12px;
  border:1px dashed rgba(255,255,255,.35);
  display:grid;
  place-items:center;
  text-align:center;
  font-size:12px;
  line-height:1.6;
  color:rgba(255,255,255,.66);
}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-list{display:flex;flex-direction:column;gap:10px;}
.footer-list a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-list a:hover{color:#fff;}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:rgba(255,255,255,.72);}
.footer-contact strong{color:#fff;font-weight:600;}
.footer-bottom{
  margin-top:52px;
  padding:20px 0;
  border-top:1px solid rgba(255,255,255,.16);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:rgba(255,255,255,.6);
}
.footer-bottom-links{display:flex;flex-wrap:wrap;gap:18px;}
.footer-bottom-links a{color:rgba(255,255,255,.6);}
.footer-bottom-links a:hover{color:#fff;}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-links{display:none;}
  .menu-toggle{display:flex;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-grid h1{font-size:32px;}
  .feature-row{grid-template-columns:1fr;gap:30px;}
  .feature-row.is-reverse .feature-media{order:0;}
  .feature-row + .feature-row{margin-top:56px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .stat-band{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 12px;}
  .stat-item + .stat-item{border-left:none;}
  .stat-item:nth-child(even){border-left:1px solid rgba(255,255,255,.16);}
  .stat-item:nth-child(n+3){border-top:1px solid rgba(255,255,255,.16);padding-top:20px;}
}
@media (max-width:767px){
  html{scroll-padding-top:104px;}
  .anchor-bar{top:64px;}
  .section{padding:52px 0;}
  .page-hero{padding:104px 0 60px;}
  .hero-grid h1{font-size:28px;line-height:1.28;}
  .sec-head h2{font-size:22px;}
  .feature-text h3{font-size:19px;}
  .cta-band{padding:40px 22px;}
  .cta-band h2{font-size:22px;}
  .stat-item .value{font-size:30px;}
  .mini-grid{grid-template-columns:1fr;}
  .hero-badge{right:10px;bottom:10px;padding:12px 16px;min-width:132px;}
  .hero-badge .num{font-size:20px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:519px){
  .hero-actions{gap:10px;}
  .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .hero-meta{gap:14px;}
  .stat-band{grid-template-columns:1fr;text-align:left;}
  .stat-item{text-align:left;}
  .stat-item:nth-child(even){border-left:none;}
  .stat-item:nth-child(n+2){border-top:1px solid rgba(255,255,255,.16);padding-top:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:1ms !important;animation-duration:1ms !important;}
  html{scroll-behavior:auto;}
  .btn:hover,.mini-card:hover{transform:none;}
}