/* roulang page: index */
:root{
  --bg-0:#0B0A1A;
  --bg-1:#12112A;
  --surface:#171630;
  --surface-2:#1E1C3D;
  --line:rgba(255,255,255,0.08);
  --line-strong:rgba(255,255,255,0.16);
  --brand-1:#21E6C1;
  --brand-2:#7A5CFF;
  --accent:#FF4D8D;
  --data:#FFC24B;
  --text-1:#F4F5FF;
  --text-2:#A8AAC8;
  --text-3:#6E7191;
  --grad:linear-gradient(120deg,#21E6C1 0%,#7A5CFF 52%,#FF4D8D 100%);
  --r-xl:24px;
  --r-lg:18px;
  --r-sm:12px;
  --shadow-card:0 18px 48px -28px rgba(10,8,30,0.9);
  --shadow-glow:0 0 0 1px rgba(33,230,193,0.28),0 24px 60px -24px rgba(122,92,255,0.45);
  --dur:200ms;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"Inter",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;border-style:none;}
button,input,textarea,select{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}

/* 容器 */
.container{max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 32px;}}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(11,10,26,0.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,rgba(33,230,193,0.9),rgba(122,92,255,0.6) 45%,rgba(255,77,141,0) 100%);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;height:64px;}
@media (min-width:768px){.nav-wrap{height:72px;}}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:-0.02em;}
.brand-mark{
  width:30px;height:30px;border-radius:10px;flex:none;
  background:var(--grad);
  box-shadow:0 0 22px rgba(33,230,193,0.35);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:8px;border-radius:4px;background:var(--bg-0);opacity:.85;
}
.brand-text{color:var(--text-1);}
.brand-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px rgba(255,77,141,0.8);display:inline-block;margin-left:2px;}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;display:block;padding:9px 15px;border-radius:999px;
  font-size:15px;color:var(--text-2);border:1px solid transparent;
  transition:color var(--dur) ease-out,background var(--dur) ease-out,border-color var(--dur) ease-out;
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,0.05);}
.nav-link.is-active{
  color:var(--brand-1);
  background:rgba(33,230,193,0.14);
  border-color:rgba(33,230,193,0.45);
  box-shadow:0 0 22px rgba(33,230,193,0.35);
}
.nav-link.is-active::after{
  content:"";position:absolute;top:6px;right:8px;width:4px;height:4px;border-radius:50%;
  background:var(--brand-1);box-shadow:0 0 8px rgba(33,230,193,0.9);
}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line-strong);
  background:transparent;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px;
  transition:border-color var(--dur) ease-out,background var(--dur) ease-out;
}
.nav-toggle:hover{border-color:rgba(33,230,193,0.55);background:rgba(33,230,193,0.08);}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--dur) ease-out,box-shadow var(--dur) ease-out,background-color var(--dur) ease-out,border-color var(--dur) ease-out,background-position var(--dur) ease-out;
  background-size:200% 100%;background-position:0% 50%;
}
.btn-primary{background-image:var(--grad);color:#08121A;}
.btn-primary:hover{background-position:100% 50%;transform:translateY(-2px);box-shadow:0 12px 34px -12px rgba(33,230,193,0.6),0 0 0 1px rgba(33,230,193,0.4);}
.btn-ghost{background:transparent;border-color:rgba(33,230,193,0.45);color:var(--text-1);}
.btn-ghost:hover{background:rgba(33,230,193,0.12);border-color:rgba(33,230,193,0.9);transform:translateY(-2px);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn:focus-visible{outline:2px solid var(--brand-1);outline-offset:2px;}
.btn:disabled,.btn.is-disabled{opacity:.45;transform:none;box-shadow:none;cursor:not-allowed;}

/* 公告条 */
.notice-bar{
  background:linear-gradient(90deg,rgba(33,230,193,0.12),rgba(122,92,255,0.12) 55%,rgba(255,77,141,0.08));
  border-bottom:1px solid var(--line);
}
.notice-inner{display:flex;align-items:center;gap:10px;min-height:44px;font-size:14px;color:var(--text-2);}
.notice-inner strong{color:var(--brand-1);font-weight:600;}
.notice-arrow{margin-left:auto;color:var(--brand-1);font-size:13px;white-space:nowrap;}

/* Hero */
.hero{position:relative;overflow:hidden;padding:56px 0 64px;}
@media (min-width:1024px){.hero{padding:80px 0 88px;}}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(680px 340px at 12% 8%,rgba(33,230,193,0.16),transparent 70%),
    radial-gradient(620px 380px at 88% 78%,rgba(122,92,255,0.18),transparent 72%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:linear-gradient(rgba(255,255,255,0.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,0.6) 1px,transparent 1px);
  background-size:56px 56px;
}
.hero-grid{position:relative;z-index:2;display:grid;gap:44px;align-items:center;}
@media (min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:56px;}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.06em;
  color:var(--brand-1);border:1px solid rgba(33,230,193,0.35);border-radius:999px;
  padding:6px 14px;background:rgba(33,230,193,0.08);margin-bottom:20px;
}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--brand-1);box-shadow:0 0 10px rgba(33,230,193,0.9);}
.hero h1{
  font-size:clamp(32px,5vw,56px);line-height:1.15;font-weight:800;letter-spacing:-0.02em;
  margin-bottom:20px;
}
.hero h1 .hl{
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:16.5px;line-height:1.85;color:var(--text-2);max-width:620px;margin-bottom:28px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px;}
.badge-row{display:flex;flex-wrap:wrap;gap:12px;}
@media (max-width:767px){.badge-row{flex-wrap:nowrap;overflow-x:auto;padding-bottom:6px;}}
.badge{
  display:inline-flex;align-items:center;gap:9px;padding:9px 16px;border-radius:999px;
  background:rgba(255,255,255,0.04);border:1px solid var(--line);
  font-size:12.5px;letter-spacing:.03em;color:var(--text-2);white-space:nowrap;
}
.badge b{font-family:var(--font-mono);font-size:15px;font-weight:700;color:var(--text-1);letter-spacing:0;}
.badge i{width:8px;height:8px;border-radius:2px;flex:none;}
.badge-teal i{background:var(--brand-1);box-shadow:0 0 10px rgba(33,230,193,0.9);}
.badge-purple i{background:var(--brand-2);box-shadow:0 0 10px rgba(122,92,255,0.9);}
.badge-pink i{background:var(--accent);box-shadow:0 0 10px rgba(255,77,141,0.9);}
.badge-gold i{background:var(--data);box-shadow:0 0 10px rgba(255,194,75,0.9);}

.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-xl);
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.float-card{
  position:absolute;right:-6px;bottom:-18px;
  background:var(--surface);border:1px solid var(--line-strong);border-radius:var(--r-lg);
  padding:14px 20px;box-shadow:var(--shadow-glow);
  display:flex;flex-direction:column;gap:2px;min-width:150px;
}
.float-num{font-family:var(--font-mono);font-size:24px;font-weight:700;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.float-label{font-size:12px;color:var(--text-2);letter-spacing:.04em;}

/* 板块 */
.section{padding:56px 0;}
@media (min-width:768px){.section{padding:80px 0;}}
.section.dark{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-tag{
  display:inline-block;font-size:12.5px;letter-spacing:.08em;color:var(--brand-1);
  margin-bottom:12px;
}
.section h2{font-size:clamp(24px,3.2vw,38px);line-height:1.25;font-weight:700;margin-bottom:14px;}
.section-lead{color:var(--text-2);font-size:16px;}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-bottom:32px;}
.text-link{color:var(--brand-1);font-size:14px;display:inline-flex;align-items:center;gap:6px;transition:gap var(--dur) ease-out,opacity var(--dur) ease-out;}
.text-link:hover{gap:10px;opacity:.85;}

/* 痛点卡 */
.pain-grid{display:grid;gap:20px;grid-template-columns:1fr;}
@media (min-width:640px){.pain-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.pain-grid{grid-template-columns:repeat(4,1fr);}}
.pain-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-xl);
  padding:26px 24px;box-shadow:var(--shadow-card);
  transition:transform var(--dur) ease-out,box-shadow var(--dur) ease-out,border-color var(--dur) ease-out;
}
.pain-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-glow);border-color:rgba(33,230,193,0.3);}
.pain-num{
  font-family:var(--font-mono);font-size:26px;font-weight:700;line-height:1;margin-bottom:16px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.pain-card h3{font-size:19px;margin-bottom:10px;}
.pain-card p{font-size:14.5px;color:var(--text-2);line-height:1.8;}

/* 横向图文卡 */
.feature-list{display:flex;flex-direction:column;gap:24px;}
.feature-card{
  display:grid;gap:0;grid-template-columns:1fr;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-xl);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:box-shadow var(--dur) ease-out,border-color var(--dur) ease-out;
}
.feature-card:hover{box-shadow:var(--shadow-glow);border-color:rgba(33,230,193,0.28);}
@media (min-width:900px){
  .feature-card{grid-template-columns:5fr 7fr;}
  .feature-card.reverse .feature-media{order:2;}
}
.feature-media{position:relative;overflow:hidden;background:var(--surface-2);}
.feature-media img{width:100%;height:100%;min-height:220px;object-fit:cover;transition:transform 400ms ease-out;}
.feature-card:hover .feature-media img{transform:scale(1.05);}
.feature-body{padding:28px 26px;}
@media (min-width:900px){.feature-body{padding:38px 40px;}}
.feature-body h3{font-size:21px;margin-bottom:12px;}
.feature-body p{font-size:15px;color:var(--text-2);margin-bottom:18px;}
.check-list{display:flex;flex-direction:column;gap:10px;margin-bottom:20px;}
.check-list li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2);align-items:flex-start;}
.check-list li::before{
  content:"";flex:none;width:16px;height:16px;margin-top:6px;border-radius:5px;
  background:linear-gradient(120deg,rgba(33,230,193,0.9),rgba(122,92,255,0.9));
  box-shadow:0 0 12px rgba(33,230,193,0.45);
  clip-path:polygon(14% 44%,0 60%,40% 100%,100% 20%,86% 6%,40% 70%);
}

/* 流程步骤 */
.steps{display:grid;gap:20px;grid-template-columns:1fr;}
@media (min-width:640px){.steps{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.steps{grid-template-columns:repeat(4,1fr);}}
.step{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:24px 22px;
  transition:transform var(--dur) ease-out,border-color var(--dur) ease-out;
}
.step:hover{transform:translateY(-4px);border-color:rgba(122,92,255,0.4);}
.step-num{
  width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-weight:700;font-size:15px;color:#08121A;
  background:var(--grad);margin-bottom:16px;
}
.step h3{font-size:18px;margin-bottom:8px;}
.step p{font-size:14.5px;color:var(--text-2);}

/* 数据区 */
.stat-band{
  border-radius:var(--r-xl);padding:2px;
  background:linear-gradient(120deg,rgba(33,230,193,0.7),rgba(122,92,255,0.7) 52%,rgba(255,77,141,0.7));
}
.stat-band-inner{
  border-radius:calc(var(--r-xl) - 2px);background:var(--bg-1);
  padding:38px 26px;
  display:grid;gap:26px;grid-template-columns:1fr;
}
@media (min-width:640px){.stat-band-inner{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.stat-band-inner{grid-template-columns:repeat(4,1fr);}}
.stat-item{text-align:left;}
.stat-value{
  font-family:var(--font-mono);font-size:clamp(30px,4vw,42px);font-weight:700;line-height:1.1;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  margin-bottom:8px;
}
.stat-label{font-size:12.5px;color:var(--text-2);letter-spacing:.04em;}

/* 证言 */
.voice{display:grid;gap:28px;grid-template-columns:1fr;}
@media (min-width:1024px){.voice{grid-template-columns:5fr 7fr;gap:40px;align-items:start;}}
.voice-quote{
  font-size:clamp(22px,2.6vw,30px);line-height:1.5;font-weight:700;letter-spacing:-0.01em;
  padding-left:20px;border-left:3px solid transparent;
  border-image:var(--grad) 1;
}
.voice-cards{display:grid;gap:18px;grid-template-columns:1fr;}
@media (min-width:640px){.voice-cards{grid-template-columns:repeat(2,1fr);}}
.testimonial{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-xl);
  padding:24px;box-shadow:var(--shadow-card);
  transition:transform var(--dur) ease-out,box-shadow var(--dur) ease-out;
}
.testimonial:hover{transform:translateY(-4px);box-shadow:var(--shadow-glow);}
.t-head{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.t-avatar{
  width:42px;height:42px;border-radius:50%;flex:none;
  background:linear-gradient(135deg,rgba(33,230,193,0.85),rgba(122,92,255,0.85));
  display:flex;align-items:center;justify-content:center;font-weight:700;color:#08121A;font-size:15px;
}
.t-name{font-size:15px;font-weight:600;}
.t-role{font-size:12.5px;color:var(--text-3);}
.t-body{font-size:14.5px;color:var(--text-2);line-height:1.85;margin-bottom:12px;}
.t-score{font-size:12.5px;color:var(--data);letter-spacing:.14em;}

/* 内容列表 */
.post-grid{display:grid;gap:22px;grid-template-columns:1fr;}
@media (min-width:640px){.post-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.post-grid{grid-template-columns:repeat(3,1fr);}}
.post-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-xl);
  box-shadow:var(--shadow-card);
  transition:transform var(--dur) ease-out,box-shadow var(--dur) ease-out,border-color var(--dur) ease-out;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-glow);border-color:rgba(33,230,193,0.28);}
.post-cover{display:block;position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--surface-2);}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease-out;}
.post-card:hover .post-cover img{transform:scale(1.05);}
.post-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.tag{
  align-self:flex-start;font-size:12.5px;color:var(--brand-1);
  border:1px solid rgba(33,230,193,0.4);border-radius:999px;padding:4px 12px;
  transition:background-color var(--dur) ease-out;
}
.tag:hover{background:rgba(33,230,193,0.12);}
.post-title{font-size:18px;line-height:1.5;font-weight:600;}
.post-title a{transition:color var(--dur) ease-out;}
.post-title a:hover{color:var(--brand-1);}
.post-excerpt{
  font-size:14px;color:var(--text-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{margin-top:auto;padding-top:10px;border-top:1px solid var(--line);font-size:12.5px;color:var(--text-3);}
.empty-state{
  border:1px dashed var(--line-strong);border-radius:var(--r-xl);
  padding:46px 24px;text-align:center;background:var(--surface);
}
.empty-state p{font-size:14.5px;color:var(--text-2);margin-bottom:18px;}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;transition:border-color var(--dur) ease-out;
}
.faq-item[open]{border-color:rgba(33,230,193,0.32);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px;font-size:16px;font-weight:600;color:var(--text-2);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  transition:color var(--dur) ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item[open] summary{color:var(--text-1);}
.faq-item summary::after{
  content:"+";font-size:20px;color:var(--brand-1);transition:transform 260ms ease-out;line-height:1;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-body{padding:0 24px 22px;font-size:14.5px;color:var(--text-2);line-height:1.9;border-left:3px solid transparent;
  border-image:var(--grad) 1;margin-left:24px;padding-left:18px;}
.faq-item summary:focus-visible{outline:2px solid var(--brand-1);outline-offset:-2px;}

/* CTA */
.cta-band{position:relative;overflow:hidden;border-radius:var(--r-xl);
  background:linear-gradient(120deg,#21E6C1 0%,#7A5CFF 52%,#FF4D8D 100%);}
.cta-band::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(11,10,26,0.82),rgba(11,10,26,0.9));}
.cta-inner{position:relative;z-index:2;padding:46px 28px;text-align:center;}
@media (min-width:768px){.cta-inner{padding:62px 48px;}}
.cta-inner h2{font-size:clamp(23px,3vw,34px);line-height:1.3;margin-bottom:14px;}
.cta-inner p{color:var(--text-2);font-size:15px;max-width:640px;margin:0 auto 26px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-bottom:18px;}
.cta-note{font-size:14px;color:var(--text-3);}

/* 页脚 */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);margin-top:0;}
.footer-grad{height:2px;background:var(--grad);}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr;padding:52px 0 34px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:28px;}}
.footer-brand p{font-size:14px;color:var(--text-2);margin:14px 0 18px;max-width:300px;}
.footer-social{display:flex;gap:10px;}
.social-dot{
  width:36px;height:36px;border-radius:12px;border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--text-2);
  transition:border-color var(--dur) ease-out,color var(--dur) ease-out,background-color var(--dur) ease-out;
}
.social-dot:hover{border-color:rgba(33,230,193,0.55);color:var(--brand-1);background:rgba(33,230,193,0.1);}
.footer-col h4{font-size:14.5px;font-weight:600;margin-bottom:16px;color:var(--text-1);}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2);transition:color var(--dur) ease-out;}
.footer-col a:hover{color:var(--brand-1);}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 30px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a:hover{color:var(--brand-1);}

/* 移动端导航 */
@media (max-width:899px){
  .nav-toggle{display:flex;}
  .nav-links{
    position:fixed;left:0;right:0;top:64px;bottom:0;z-index:49;
    flex-direction:column;align-items:stretch;gap:10px;
    padding:26px 20px;background:rgba(11,10,26,0.985);
    border-top:1px solid var(--line);
    transform:translateY(-8px);opacity:0;pointer-events:none;
    transition:opacity 220ms ease-out,transform 220ms ease-out;
    overflow-y:auto;
  }
  .nav-links.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
  .nav-link{font-size:16px;padding:14px 18px;border-radius:var(--r-sm);}
  .nav-link.is-active::after{top:auto;right:auto;left:6px;top:50%;}
  .nav-link.is-active{padding-left:22px;}
  .nav-actions .btn{display:none;}
}
@media (min-width:900px){
  .nav-links{position:static;opacity:1;transform:none;pointer-events:auto;}
}

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

/* roulang page: category1 */
:root{
  --bg-0:#0B0A1A;--bg-1:#12112A;--surface:#171630;--surface-2:#1E1C3D;
  --line:rgba(255,255,255,.08);
  --brand-1:#21E6C1;--brand-2:#7A5CFF;--accent:#FF4D8D;--data:#FFC24B;
  --text-1:#F4F5FF;--text-2:#A8AAC8;--text-3:#6E7191;
  --grad:linear-gradient(120deg,#21E6C1 0%,#7A5CFF 52%,#FF4D8D 100%);
  --r-lg:24px;--r-md:18px;--r-sm:12px;
  --shadow-card:0 18px 48px -28px rgba(10,8,30,.9);
  --shadow-hover:0 0 0 1px rgba(33,230,193,.28),0 24px 60px -24px rgba(122,92,255,.45);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background-color:var(--bg-0);color:var(--text-1);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.85;letter-spacing:.01em;
  background-image:
    radial-gradient(720px 340px at 8% -4%,rgba(33,230,193,.14),transparent 70%),
    radial-gradient(620px 320px at 96% 2%,rgba(122,92,255,.16),transparent 72%);
  background-repeat:no-repeat;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block;height:auto}
button{font:inherit;color:inherit;background:none;border:0}
:focus-visible{outline:2px solid var(--brand-1);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(11,10,26,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,rgba(33,230,193,.85),rgba(122,92,255,.6) 45%,rgba(255,77,141,.35) 70%,transparent 100%);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
@media(min-width:768px){.nav-wrap{height:72px}}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:26px;height:26px;border-radius:9px;background-image:var(--grad);
  box-shadow:0 0 18px rgba(33,230,193,.45);flex-shrink:0;
}
.brand-text{font-weight:800;font-size:19px;letter-spacing:-.01em}
.brand-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent)}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;display:inline-block;padding:9px 14px;border-radius:999px;
  font-size:15px;color:var(--text-2);border:1px solid transparent;
  transition:color .2s ease-out,background-color .2s ease-out,border-color .2s ease-out;
}
.nav-link:hover{color:var(--text-1)}
.nav-link:hover::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;
  background:var(--brand-1);border-radius:2px;box-shadow:0 0 10px rgba(33,230,193,.8);
}
.nav-link.is-active{
  color:var(--brand-1);background:rgba(33,230,193,.14);
  border-color:rgba(33,230,193,.45);box-shadow:0 0 22px rgba(33,230,193,.35);
}
.nav-link.is-active::before{
  content:"";position:absolute;top:5px;right:8px;width:4px;height:4px;
  border-radius:50%;background:var(--brand-1);box-shadow:0 0 8px var(--brand-1);
}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;
  background:var(--surface);transition:border-color .2s ease-out;
}
.nav-toggle:hover{border-color:rgba(33,230,193,.5)}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:700;white-space:nowrap;cursor:pointer;
  transition:transform .2s ease-out,background-position .2s ease-out,background-color .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background-image:var(--grad);background-size:200% 100%;background-position:0 0;color:#08121A;box-shadow:0 14px 34px -16px rgba(122,92,255,.8)}
.btn-primary:hover{background-position:100% 0;transform:translateY(-2px);box-shadow:0 18px 42px -14px rgba(122,92,255,.9)}
.btn-ghost{background:transparent;border-color:rgba(33,230,193,.45);color:var(--text-1)}
.btn-ghost:hover{background:rgba(33,230,193,.12);border-color:var(--brand-1);transform:translateY(-2px)}
.btn[disabled],.btn.is-disabled{opacity:.45;transform:none;cursor:not-allowed}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-3);padding-top:26px}
.breadcrumb a{color:var(--text-3);transition:color .2s ease-out}
.breadcrumb a:hover{color:var(--brand-1)}
.breadcrumb .sep{color:var(--text-3);opacity:.7}
.breadcrumb .current{color:var(--text-1)}

/* ---------- 页头 ---------- */
.page-hero{position:relative;overflow:hidden;padding:22px 0 46px}
.hero-bg{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(11,10,26,.78),rgba(11,10,26,.94)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.5;
}
.page-hero .container{position:relative;z-index:1}
.page-hero h1{
  font-size:clamp(32px,5vw,56px);line-height:1.15;font-weight:800;letter-spacing:-.02em;
  margin:26px 0 16px;background-image:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{max-width:60ch;font-size:17px;color:var(--text-2)}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.badge{
  display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  font-size:12.5px;letter-spacing:.06em;color:var(--text-2);
}
.badge i{width:8px;height:8px;border-radius:2px;display:inline-block;flex-shrink:0}
.badge b{font-family:"Inter",ui-monospace,system-ui;font-size:15px;color:var(--text-1);letter-spacing:0}
.badge-cyan i{background:var(--brand-1);box-shadow:0 0 10px rgba(33,230,193,.8)}
.badge-purple i{background:var(--brand-2);box-shadow:0 0 10px rgba(122,92,255,.8)}
.badge-pink i{background:var(--accent);box-shadow:0 0 10px rgba(255,77,141,.75)}
.badge-gold i{background:var(--data);box-shadow:0 0 10px rgba(255,194,75,.75)}

/* ---------- 主体布局 ---------- */
.section{padding:48px 0}
@media(min-width:768px){.section{padding:64px 0}}
.layout{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:1024px){.layout{grid-template-columns:3fr 9fr;gap:40px}}

.toc{position:relative}
@media(min-width:1024px){
  .toc{position:sticky;top:100px;align-self:start}
}
.toc h4{font-size:13px;letter-spacing:.1em;color:var(--text-3);font-weight:600;margin-bottom:14px}
.toc-list{display:flex;flex-direction:column;gap:6px;border-left:1px solid var(--line);padding-left:0}
.toc-list a{
  position:relative;display:block;padding:9px 14px 9px 18px;border-radius:0 12px 12px 0;
  font-size:14.5px;color:var(--text-2);transition:color .2s ease-out,background-color .2s ease-out;
}
.toc-list a::before{
  content:"";position:absolute;left:-1px;top:8px;bottom:8px;width:3px;border-radius:3px;
  background:transparent;transition:background .2s ease-out,box-shadow .2s ease-out;
}
.toc-list a:hover{color:var(--text-1);background:rgba(255,255,255,.03)}
.toc-list a.is-current{color:var(--brand-1);background:rgba(33,230,193,.08)}
.toc-list a.is-current::before{background-image:var(--grad);box-shadow:0 0 12px rgba(33,230,193,.7)}
.toc-tip{
  margin-top:24px;padding:18px;border-radius:var(--r-md);background:var(--surface);
  border:1px solid var(--line);font-size:13.5px;color:var(--text-2);line-height:1.75;
}
.toc-tip strong{display:block;color:var(--text-1);font-size:14.5px;margin-bottom:6px}

/* ---------- 横向大卡 ---------- */
.post-list{display:flex;flex-direction:column;gap:24px}
.post-card{
  display:grid;grid-template-columns:1fr;gap:0;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);transition:box-shadow .3s ease-out,transform .3s ease-out;
  scroll-margin-top:104px;
}
.post-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
@media(min-width:768px){
  .post-card{grid-template-columns:5fr 7fr}
}
.card-media{position:relative;overflow:hidden;background:var(--surface-2)}
.card-media img{width:100%;height:100%;min-height:190px;object-fit:cover;aspect-ratio:16/9;transition:transform .4s ease-out}
.post-card:hover .card-media img{transform:scale(1.05)}
.card-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(11,10,26,.72),rgba(11,10,26,.05) 60%);
}
.card-body{padding:24px}
@media(min-width:768px){.card-body{padding:28px 30px}}
.card-tag{
  display:inline-block;padding:5px 12px;border-radius:999px;font-size:12.5px;letter-spacing:.06em;
  border:1px solid rgba(33,230,193,.4);color:var(--brand-1);background:rgba(33,230,193,.08);
}
.card-body h3{font-size:21px;line-height:1.4;font-weight:600;margin:14px 0 10px}
.card-body p{font-size:15px;color:var(--text-2);margin-bottom:14px}
.point-list{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.point-list li{position:relative;padding-left:20px;font-size:14.5px;color:var(--text-2);line-height:1.7}
.point-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:2px;
  background-image:var(--grad);
}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand-1)}
.text-link::after{content:"→";transition:transform .2s ease-out}
.text-link:hover::after{transform:translateX(4px)}
.text-link:hover{color:var(--brand-1);text-decoration:underline;text-underline-offset:4px}

/* ---------- 数据条 ---------- */
.stat-band{
  margin:8px 0 0;padding:26px;border-radius:var(--r-lg);background:var(--bg-1);
  border:1px solid var(--line);display:grid;gap:18px;grid-template-columns:repeat(2,minmax(0,1fr));
}
@media(min-width:768px){.stat-band{grid-template-columns:repeat(4,minmax(0,1fr));padding:30px 32px}}
.stat-item{display:flex;flex-direction:column;gap:4px}
.stat-num{
  font-family:"Inter",ui-monospace,system-ui;font-size:clamp(26px,3vw,34px);font-weight:800;letter-spacing:-.02em;
  background-image:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-label{font-size:12.5px;letter-spacing:.06em;color:var(--text-3)}

/* ---------- FAQ ---------- */
.divider-line{height:1px;background:var(--line);margin:8px 0 40px}
.faq{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq details{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.faq details[open]{border-color:rgba(33,230,193,.32);box-shadow:0 0 0 1px rgba(33,230,193,.18),0 20px 46px -30px rgba(122,92,255,.6)}
.faq summary{
  position:relative;cursor:pointer;list-style:none;padding:18px 56px 18px 22px;
  font-size:16px;font-weight:600;color:var(--text-2);transition:color .2s ease-out;
}
.faq summary::-webkit-details-marker{display:none}
.faq details[open] summary{color:var(--text-1)}
.faq summary::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--brand-1);transition:transform .25s ease-out;
}
.faq details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq details[open] summary::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;
  background-image:var(--grad);
}
.faq .faq-answer{padding:0 24px 20px;font-size:15px;color:var(--text-2)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:32px;background:var(--bg-1);
  border:1px solid var(--line);padding:44px 26px;text-align:center;
}
@media(min-width:768px){.cta-band{padding:60px 48px}}
.cta-band::before{content:"";position:absolute;inset:0;background-image:var(--grad);opacity:.13}
.cta-inner{position:relative;z-index:1;max-width:760px;margin:0 auto}
.cta-band h2{font-size:clamp(24px,3.2vw,34px);line-height:1.3;font-weight:700;margin-bottom:14px}
.cta-band p{color:var(--text-2);font-size:15.5px;margin-bottom:26px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.cta-note{display:block;margin-top:18px;font-size:14px;color:var(--text-3)}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;margin-top:64px;background:var(--bg-1);border-top:1px solid var(--line)}
.footer-grad{height:2px;background:linear-gradient(90deg,#21E6C1,#7A5CFF 52%,#FF4D8D 88%,transparent)}
.footer-grid{display:grid;gap:32px;padding:52px 0 36px;grid-template-columns:1fr}
@media(min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-2);max-width:34ch}
.footer-social{display:flex;gap:10px;margin-top:20px}
.social-dot{
  width:38px;height:38px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--surface);border:1px solid var(--line);font-size:14px;color:var(--text-2);
  transition:color .2s ease-out,border-color .2s ease-out,transform .2s ease-out;
}
.social-dot:hover{color:var(--brand-1);border-color:rgba(33,230,193,.5);transform:translateY(-2px)}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:16px;color:var(--text-1)}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14px;color:var(--text-2)}
.footer-col a{color:var(--text-2);transition:color .2s ease-out}
.footer-col a:hover{color:var(--brand-1)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  padding:18px 0 26px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);font-family:ui-monospace,"Inter",system-ui,sans-serif;
}

/* ---------- 移动端导航 ---------- */
@media(max-width:768px){
  .nav-toggle{display:flex}
  .nav-links{
    position:fixed;top:65px;left:0;right:0;flex-direction:column;align-items:stretch;gap:6px;
    padding:16px 20px 26px;background:rgba(11,10,26,.98);backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:transform .2s ease-out,opacity .2s ease-out;
  }
  .nav-links.is-open{transform:none;opacity:1;pointer-events:auto}
  .nav-link{padding:12px 16px;border-radius:14px}
  .nav-link.is-active{border-radius:14px}
  .nav-link:hover::after{display:none}
  .nav-actions .btn{display:none}
}
@media(max-width:520px){
  .card-body{padding:20px}
  .stat-band{grid-template-columns:1fr 1fr;padding:20px}
  .cta-band{padding:36px 20px;border-radius:24px}
  .faq summary{padding:16px 48px 16px 18px;font-size:15px}
  .faq .faq-answer{padding:0 18px 18px}
}
@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --bg-0:#0B0A1A;
  --bg-1:#12112A;
  --surface:#171630;
  --surface-2:#1E1C3D;
  --line:rgba(255,255,255,.08);
  --brand-1:#21E6C1;
  --brand-2:#7A5CFF;
  --accent:#FF4D8D;
  --data:#FFC24B;
  --text-1:#F4F5FF;
  --text-2:#A8AAC8;
  --text-3:#6E7191;
  --grad:linear-gradient(120deg,#21E6C1 0%,#7A5CFF 52%,#FF4D8D 100%);
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:12px;
  --shadow-card:0 18px 48px -28px rgba(10,8,30,.9);
  --shadow-hover:0 0 0 1px rgba(33,230,193,.28),0 24px 60px -24px rgba(122,92,255,.45);
  --container:1200px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;background:none;border:0;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure{margin:0}
:focus-visible{outline:2px solid var(--brand-1);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
.num{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,10,26,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,var(--brand-1) 0%,var(--brand-2) 42%,rgba(255,77,141,0) 100%);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px}
@media (min-width:768px){.nav-wrap{min-height:72px}}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800}
.brand-mark{position:relative;width:26px;height:26px;border-radius:9px;background:var(--grad);box-shadow:0 0 20px rgba(33,230,193,.35);flex:none}
.brand-mark::after{content:"";position:absolute;inset:7px 8px;border-radius:3px;background:var(--bg-0)}
.brand-text{font-size:18px;letter-spacing:-.01em;color:var(--text-1)}
.brand-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent);flex:none}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 14px;font-size:15px;color:var(--text-2);
  border-radius:999px;border:1px solid transparent;
  transition:color .2s,background .2s,border-color .2s;
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.04)}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:3px;width:0;height:2px;border-radius:2px;
  background:var(--grad);box-shadow:0 0 8px rgba(33,230,193,.75);
  transform:translateX(-50%);transition:width .2s ease-out;
}
.nav-link:hover::after{width:56%}
.nav-link.is-active{
  color:var(--brand-1);background:rgba(33,230,193,.14);
  border-color:rgba(33,230,193,.45);
  box-shadow:0 0 22px rgba(33,230,193,.35);
}
.nav-link.is-active::after{width:0}
.nav-link.is-active::before{
  content:"";position:absolute;top:7px;right:9px;width:4px;height:4px;
  border-radius:50%;background:var(--brand-1);box-shadow:0 0 8px var(--brand-1);
}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;width:42px;height:38px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
  transition:border-color .2s,background .2s;
}
.nav-toggle:hover{border-color:rgba(33,230,193,.45);background:rgba(33,230,193,.1)}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);transition:transform .2s,opacity .2s}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
@media (max-width:820px){
  .nav-toggle{display:flex}
  .nav-links{
    position:fixed;left:0;right:0;top:64px;
    flex-direction:column;align-items:stretch;gap:8px;
    padding:18px 20px 26px;
    background:rgba(11,10,26,.98);
    border-bottom:1px solid var(--line);
    max-height:calc(100vh - 64px);overflow:auto;
    opacity:0;transform:translateY(-12px);pointer-events:none;
    transition:opacity .24s ease-out,transform .24s ease-out;
  }
  .nav-links.is-open{opacity:1;transform:none;pointer-events:auto}
  .nav-link{padding:12px 14px;font-size:16px;border-radius:14px}
  .nav-link::after{display:none}
}
@media (max-width:520px){
  .nav-actions .btn{display:none}
  .brand-text{font-size:17px}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-weight:700;letter-spacing:.01em;border:1px solid transparent;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background-position .2s ease-out,background-color .2s ease-out,border-color .2s ease-out,color .2s ease-out;
  white-space:nowrap;
}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-lg{padding:14px 30px;font-size:16px}
.btn-primary{
  background:var(--grad);background-size:200% 100%;background-position:0 0;
  color:#08121A;box-shadow:0 14px 34px -16px rgba(33,230,193,.65);
}
.btn-primary:hover{transform:translateY(-2px);background-position:100% 0;box-shadow:0 0 0 1px rgba(33,230,193,.35),0 22px 46px -18px rgba(122,92,255,.7)}
.btn-ghost{border-color:rgba(33,230,193,.4);color:var(--text-1);background:transparent}
.btn-ghost:hover{background:rgba(33,230,193,.12);border-color:var(--brand-1);transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

/* ---------- tags / badges ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;font-size:13px;letter-spacing:.06em;
  border:1px solid var(--line);color:var(--text-2);background:rgba(255,255,255,.02);
  transition:color .2s,border-color .2s,background .2s;
}
.tag:hover{color:var(--brand-1);border-color:rgba(33,230,193,.5);background:rgba(33,230,193,.1)}
.tag-cat{color:var(--brand-1);border-color:rgba(33,230,193,.42);background:rgba(33,230,193,.1)}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:999px;font-size:13px;color:var(--text-2);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
}
.badge b{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:16px;color:var(--text-1)}
.badge::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--brand-1);box-shadow:0 0 10px var(--brand-1);flex:none}
.badge.is-purple::before{background:var(--brand-2);box-shadow:0 0 10px var(--brand-2)}
.badge.is-pink::before{background:var(--accent);box-shadow:0 0 10px var(--accent)}
.badge.is-data::before{background:var(--data);box-shadow:0 0 10px var(--data)}

/* ---------- breadcrumb ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-3);padding:22px 0 0}
.breadcrumb a{color:var(--text-3);transition:color .2s}
.breadcrumb a:hover{color:var(--brand-1)}
.breadcrumb .sep{color:rgba(255,255,255,.2)}
.breadcrumb .current{color:var(--text-1);max-width:min(520px,58vw);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- article head ---------- */
.article-hero{position:relative;border-bottom:1px solid var(--line);overflow:hidden}
.article-hero::before{
  content:"";position:absolute;inset:-40% 0 auto 0;height:520px;pointer-events:none;
  background:
    radial-gradient(560px 240px at 12% 30%,rgba(33,230,193,.14),transparent 72%),
    radial-gradient(520px 260px at 86% 12%,rgba(122,92,255,.18),transparent 72%);
}
.article-hero .container{position:relative}
.article-head{padding:22px 0 34px;max-width:880px}
.article-title{
  margin:16px 0 0;color:var(--text-1);font-weight:800;
  font-size:clamp(28px,4vw,44px);line-height:1.28;letter-spacing:-.02em;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;font-size:14px;color:var(--text-2)}
.meta-row b{color:var(--text-1);font-weight:600}
.meta-row .dot{color:var(--text-3)}

/* ---------- article body ---------- */
.article-main{padding:46px 0 0}
.article-body{max-width:760px;margin:0 auto;font-size:17px;line-height:1.9;color:var(--text-2)}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 20px}
.article-body strong,.article-body b{color:var(--text-1);font-weight:700}
.article-body h2{
  position:relative;color:var(--text-1);font-weight:700;
  font-size:clamp(21px,2.4vw,26px);line-height:1.4;margin:40px 0 16px;
}
.article-body h2::before{
  content:"";display:block;width:56px;height:2px;border-radius:2px;
  background:var(--grad);box-shadow:0 0 12px rgba(33,230,193,.6);margin-bottom:14px;
}
.article-body h3{color:var(--text-1);font-weight:600;font-size:20px;line-height:1.45;margin:30px 0 12px}
.article-body h4{color:var(--text-1);font-weight:600;font-size:17px;margin:22px 0 10px}
.article-body blockquote{
  position:relative;margin:26px 0;padding:18px 24px;
  background:var(--bg-1);border-radius:20px;color:var(--text-2);
}
.article-body blockquote::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:3px;background:var(--grad);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:0}
.article-body ul li{position:relative;padding-left:22px;margin:0 0 10px}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:12px;width:7px;height:7px;border-radius:2px;
  background:var(--grad);box-shadow:0 0 8px rgba(33,230,193,.6);
}
.article-body ol{counter-reset:li}
.article-body ol li{position:relative;padding-left:30px;margin:0 0 10px;counter-increment:li}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:2px;
  width:20px;height:20px;border-radius:7px;display:flex;align-items:center;justify-content:center;
  font-size:12px;color:var(--brand-1);background:rgba(33,230,193,.12);border:1px solid rgba(33,230,193,.35);
}
.article-body a{color:var(--brand-1);border-bottom:1px solid transparent;transition:border-color .2s}
.article-body a:hover{border-bottom-color:var(--brand-1)}
.article-body img{border-radius:18px;margin:26px auto;box-shadow:var(--shadow-card)}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;
  background:var(--surface-2);color:var(--brand-1);padding:2px 7px;border-radius:6px;
}
.article-body pre{
  background:var(--surface-2);border:1px solid var(--line);border-radius:18px;
  padding:18px 20px;overflow-x:auto;margin:24px 0;
}
.article-body pre code{background:none;padding:0;color:var(--text-1)}
.article-body table{
  width:100%;border-collapse:separate;border-spacing:0;
  border:1px solid var(--line);border-radius:16px;overflow:hidden;
  margin:24px 0;font-size:15px;background:var(--surface);
}
.article-body th,.article-body td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--line)}
.article-body th{background:var(--surface-2);color:var(--text-1);font-weight:600}
.article-body tr:last-child td{border-bottom:0}
.article-body hr{border:0;height:1px;background:var(--line);margin:34px 0}

/* ---------- article footer ---------- */
.article-foot{max-width:760px;margin:48px auto 0;padding-top:28px;border-top:1px solid var(--line)}
.foot-label{font-size:13px;letter-spacing:.08em;color:var(--text-3);margin-bottom:14px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.pager{display:grid;gap:16px;margin-top:30px;grid-template-columns:1fr}
@media (min-width:768px){.pager{grid-template-columns:1fr 1fr}}
.pager-card{
  display:block;padding:20px 22px;border-radius:var(--radius-md);
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
}
.pager-card:hover{transform:translateY(-2px);border-color:rgba(33,230,193,.4);box-shadow:var(--shadow-hover)}
.pager-card span{font-size:13px;letter-spacing:.06em;color:var(--text-3)}
.pager-card strong{display:block;margin-top:8px;font-size:17px;font-weight:600;color:var(--text-1)}
.back-row{margin-top:26px}

/* ---------- empty state ---------- */
.empty-state{
  max-width:640px;margin:0 auto;padding:52px 26px;text-align:center;
  background:var(--bg-1);border:1px dashed var(--line);border-radius:var(--radius-lg);
}
.empty-icon{
  width:52px;height:52px;margin:0 auto 18px;border-radius:16px;
  background:var(--grad);opacity:.9;position:relative;
}
.empty-icon::after{content:"";position:absolute;inset:14px 15px;border-radius:4px;background:var(--bg-1)}
.empty-state h2{font-size:20px;color:var(--text-1);font-weight:700;margin-bottom:10px}
.empty-state p{font-size:14px;color:var(--text-2);margin-bottom:22px}

/* ---------- section / cards ---------- */
.section{padding:64px 0}
@media (min-width:768px){.section{padding:86px 0}}
.section-tight{padding-top:24px}
.section-head{margin-bottom:34px;max-width:720px}
.section-head h2{font-size:clamp(24px,3.2vw,34px);line-height:1.3;font-weight:700;color:var(--text-1);letter-spacing:-.01em}
.section-head p{margin-top:14px;font-size:15px;color:var(--text-2)}
.card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);overflow:hidden;
  transition:transform .24s ease-out,box-shadow .24s ease-out,border-color .24s ease-out;
}
.card:hover{transform:translateY(-4px);border-color:rgba(33,230,193,.3);box-shadow:var(--shadow-hover)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--surface-2)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease-out}
.card:hover .card-media img{transform:scale(1.05)}
.card-media::after{content:"";position:absolute;inset:auto 0 0 0;height:52%;background:linear-gradient(180deg,rgba(11,10,26,0) 0%,rgba(11,10,26,.72) 100%)}
.card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:19px;line-height:1.45;font-weight:600;color:var(--text-1)}
.card-body h3 a{transition:color .2s}
.card-body h3 a:hover{color:var(--brand-1)}
.card-body p{font-size:14px;color:var(--text-2);line-height:1.8}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:6px}
.text-link{font-size:14px;font-weight:600;color:var(--brand-1);display:inline-flex;align-items:center;gap:6px;transition:gap .2s,color .2s}
.text-link:hover{gap:10px}
.text-link::after{content:"→";font-size:15px}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;text-align:center;
  border-radius:var(--radius-lg);border:1px solid rgba(33,230,193,.25);
  padding:46px 26px;
  background:linear-gradient(120deg,rgba(33,230,193,.18) 0%,rgba(122,92,255,.22) 52%,rgba(255,77,141,.18) 100%),var(--bg-1);
}
.cta-band::before{content:"";position:absolute;inset:0;background:rgba(11,10,26,.5);pointer-events:none}
.cta-band>*{position:relative}
.cta-band h2{font-size:clamp(23px,3vw,32px);line-height:1.3;font-weight:700;color:var(--text-1)}
.cta-band p{margin:14px auto 0;max-width:620px;font-size:15px;color:var(--text-2)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:26px}
.cta-note{margin-top:16px;font-size:14px;color:var(--text-3)}

/* ---------- footer ---------- */
.site-footer{position:relative;background:var(--bg-1);margin-top:70px}
.footer-grad{height:1px;background:var(--grad)}
.footer-grid{display:grid;gap:32px;padding:52px 0 36px;grid-template-columns:1fr}
@media (min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px}}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:var(--text-2);max-width:330px}
.footer-social{display:flex;gap:10px;margin-top:18px}
.social-dot{
  width:38px;height:38px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--text-2);font-size:13px;
  transition:color .2s,border-color .2s,background .2s,transform .2s;
}
.social-dot:hover{color:var(--brand-1);border-color:rgba(33,230,193,.5);background:rgba(33,230,193,.1);transform:translateY(-2px)}
.footer-col h4{margin:0 0 14px;font-size:15px;font-weight:700;color:var(--text-1)}
.footer-col ul{display:grid;gap:10px}
.footer-col li a,.footer-col li span{font-size:14px;color:var(--text-2);transition:color .2s}
.footer-col li a:hover{color:var(--brand-1)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;
  padding:20px 0 30px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

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

/* roulang page: category2 */
:root{
  --bg-0:#0B0A1A;
  --bg-1:#12112A;
  --surface:#171630;
  --surface-2:#1E1C3D;
  --line:rgba(255,255,255,0.08);
  --brand-1:#21E6C1;
  --brand-2:#7A5CFF;
  --accent:#FF4D8D;
  --data:#FFC24B;
  --text-1:#F4F5FF;
  --text-2:#A8AAC8;
  --text-3:#6E7191;
  --grad:linear-gradient(120deg,#21E6C1 0%,#7A5CFF 52%,#FF4D8D 100%);
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:12px;
  --shadow-card:0 18px 48px -28px rgba(10,8,30,0.9);
  --shadow-hover:0 0 0 1px rgba(33,230,193,0.28),0 24px 60px -24px rgba(122,92,255,0.45);
}
*,*::before,*::after{box-sizing:border-box;}
body.site-body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.site-body img{max-width:100%;display:block;}
body.site-body a{color:inherit;text-decoration:none;}
body.site-body ::selection{background:rgba(33,230,193,0.28);}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media(min-width:768px){.container{padding:0 32px;}}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(11,10,26,0.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,rgba(33,230,193,0.9),rgba(122,92,255,0.6),rgba(255,77,141,0.35),transparent);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;height:64px;position:relative;}
@media(min-width:768px){.nav-wrap{height:72px;}}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-0.01em;}
.brand-mark{width:22px;height:22px;border-radius:7px;background-image:var(--grad);box-shadow:0 0 18px rgba(33,230,193,0.45);flex:0 0 auto;}
.brand-text{font-size:18px;color:var(--text-1);}
.brand-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent);flex:0 0 auto;}
.nav-links{display:none;}
.nav-link{
  font-size:15px;color:var(--text-2);padding:9px 16px;border-radius:999px;position:relative;
  transition:color .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.nav-link:hover{color:var(--text-1);}
.nav-link.is-active{
  color:var(--brand-1);
  background:rgba(33,230,193,0.14);
  box-shadow:0 0 22px rgba(33,230,193,0.35),inset 0 0 0 1px rgba(33,230,193,0.45);
}
.nav-link.is-active::after{
  content:"";position:absolute;top:5px;right:8px;width:4px;height:4px;border-radius:50%;
  background:var(--brand-1);box-shadow:0 0 8px var(--brand-1);
}
.nav-actions{display:flex;align-items:center;gap:12px;}
@media(min-width:900px){
  .nav-links{display:flex;align-items:center;gap:6px;}
}
@media(max-width:899px){
  .nav-links{
    position:absolute;top:calc(100% + 1px);left:-20px;right:-20px;
    display:none;flex-direction:column;gap:6px;
    padding:14px 20px 22px;
    background:rgba(12,11,28,0.98);
    border-bottom:1px solid var(--line);
    box-shadow:0 30px 60px -30px rgba(0,0,0,0.9);
  }
  .nav-links.is-open{display:flex;}
  .nav-link{padding:13px 16px;border-radius:14px;font-size:15px;}
  .nav-link.is-active::after{right:16px;}
}
.nav-toggle{
  display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;
  width:42px;height:42px;border-radius:12px;background:transparent;
  border:1px solid var(--line);cursor:pointer;padding:0;
  transition:border-color .2s ease,background-color .2s ease;
}
.nav-toggle:hover{border-color:rgba(33,230,193,0.45);background:rgba(33,230,193,0.08);}
.nav-toggle span{display:block;width:16px;height:2px;border-radius:2px;background:var(--text-1);transition:transform .2s ease,opacity .2s ease;}
@media(min-width:900px){.nav-toggle{display:none;}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;font-family:inherit;
  transition:transform .2s ease,box-shadow .2s ease,background-position .2s ease,background-color .2s ease,border-color .2s ease;
}
.btn-primary{
  background-image:var(--grad);background-size:200% 100%;background-position:0% 50%;
  color:#08121A;box-shadow:0 12px 30px -16px rgba(33,230,193,0.8);
}
.btn-primary:hover{background-position:100% 50%;transform:translateY(-2px);box-shadow:0 18px 42px -16px rgba(122,92,255,0.8);}
.btn-ghost{background:transparent;border-color:rgba(33,230,193,0.5);color:var(--text-1);}
.btn-ghost:hover{background:rgba(33,230,193,0.12);border-color:var(--brand-1);transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn:focus-visible{outline:2px solid var(--brand-1);outline-offset:2px;}
.btn[disabled]{opacity:.45;transform:none;box-shadow:none;}

/* ---------- sections ---------- */
.section{padding:56px 0;}
@media(min-width:768px){.section{padding:80px 0;}}
@media(min-width:1024px){.section{padding:96px 0;}}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:0.16em;
  color:var(--brand-1);margin-bottom:12px;
}
.h2{font-size:clamp(24px,3.2vw,38px);line-height:1.25;font-weight:700;letter-spacing:-0.01em;margin:0 0 14px;}
.h3{font-size:21px;line-height:1.4;font-weight:600;margin:0;}
.section-head{max-width:740px;margin-bottom:40px;}
.section-head p{color:var(--text-2);font-size:16px;margin:0;}
.lead-text{color:var(--text-2);font-size:16px;margin:0 0 18px;}
.text-link{
  color:var(--brand-1);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;
  border-bottom:1px solid transparent;transition:color .2s ease,border-color .2s ease;
}
.text-link:hover{border-color:var(--brand-1);}

/* ---------- hero banner ---------- */
.cat-hero{position:relative;overflow:hidden;padding:52px 0 60px;background:var(--bg-1);border-bottom:1px solid var(--line);}
@media(min-width:768px){.cat-hero{padding:70px 0 80px;}}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.16;
}
.cat-hero-mask{
  position:absolute;inset:0;
  background:
    radial-gradient(80% 120% at 50% 0%,rgba(33,230,193,0.20),transparent 62%),
    radial-gradient(70% 100% at 85% 100%,rgba(122,92,255,0.22),transparent 60%),
    linear-gradient(180deg,rgba(11,10,26,0.55),rgba(11,10,26,0.96));
}
.cat-hero .container{position:relative;z-index:2;text-align:center;}
.crumb{
  display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;
  font-size:14px;color:var(--text-3);margin-bottom:22px;
}
.crumb a{color:var(--text-3);transition:color .2s ease;}
.crumb a:hover{color:var(--brand-1);}
.crumb span.sep{color:var(--text-3);opacity:.7;}
.crumb .current{color:var(--text-1);}
.cat-hero h1{
  font-size:clamp(32px,5vw,56px);line-height:1.15;font-weight:800;letter-spacing:-0.02em;
  margin:0 0 16px;
}
.cat-hero h1 em{
  font-style:normal;
  background-image:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.cat-hero .hero-sub{
  max-width:720px;margin:0 auto 26px;color:var(--text-2);font-size:17px;line-height:1.8;
}
.pill-row{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;}
.pill{
  display:inline-flex;align-items:center;padding:8px 18px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,0.04);
  font-size:13px;letter-spacing:0.06em;color:var(--text-2);
  transition:color .2s ease,border-color .2s ease,background-color .2s ease;
}
.pill:hover{color:var(--brand-1);border-color:rgba(33,230,193,0.45);background:rgba(33,230,193,0.08);}

/* ---------- badges ---------- */
.badges{display:flex;flex-wrap:wrap;gap:12px;}
.badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:10px 16px;border-radius:999px;
  background:rgba(255,255,255,0.04);border:1px solid var(--line);
  font-size:13px;color:var(--text-2);
}
.badge strong{font-family:"Inter",ui-monospace,SFMono-Regular,Menlo,monospace;font-size:17px;font-weight:700;color:var(--text-1);letter-spacing:0.01em;}
.badge-dot{width:8px;height:8px;border-radius:2px;flex:0 0 auto;}
.dot-teal{background:var(--brand-1);box-shadow:0 0 10px rgba(33,230,193,0.8);}
.dot-purple{background:var(--brand-2);box-shadow:0 0 10px rgba(122,92,255,0.8);}
.dot-pink{background:var(--accent);box-shadow:0 0 10px rgba(255,77,141,0.8);}
.dot-gold{background:var(--data);box-shadow:0 0 10px rgba(255,194,75,0.8);}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:1fr;gap:22px;counter-reset:step;}
@media(min-width:1024px){.steps{grid-template-columns:repeat(4,1fr);gap:24px;}}
.step{
  position:relative;padding:26px 22px;border-radius:var(--radius-md);
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(33,230,193,0.32);}
.step-num{
  width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-family:"Inter",ui-monospace,monospace;font-weight:700;font-size:15px;color:#08121A;
  background-image:var(--grad);margin-bottom:16px;
}
.step h3{margin:0 0 8px;font-size:18px;line-height:1.4;font-weight:600;}
.step p{margin:0;font-size:14px;line-height:1.7;color:var(--text-2);}
@media(max-width:1023px){
  .step::before{
    content:"";position:absolute;left:41px;top:-22px;width:2px;height:22px;
    background:linear-gradient(180deg,rgba(122,92,255,0.8),rgba(33,230,193,0.6));
  }
  .step:first-child::before{display:none;}
}
@media(min-width:1024px){
  .step::after{
    content:"";position:absolute;top:44px;right:-24px;width:24px;height:2px;
    background:linear-gradient(90deg,rgba(33,230,193,0.7),rgba(122,92,255,0.6));
  }
  .step:last-child::after{display:none;}
}

/* ---------- card grid ---------- */
.card-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media(min-width:768px){.card-grid{grid-template-columns:repeat(2,1fr);}}
.panel{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.panel:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:rgba(33,230,193,0.32);}
.panel-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--surface-2);}
.panel-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.panel:hover .panel-media img{transform:scale(1.05);}
.panel-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,10,26,0) 42%,rgba(11,10,26,0.82));
}
.panel-tag{
  position:absolute;left:16px;bottom:14px;z-index:2;
  padding:5px 12px;border-radius:999px;font-size:12px;letter-spacing:0.06em;
  background:rgba(11,10,26,0.7);border:1px solid rgba(33,230,193,0.45);color:var(--brand-1);
}
.panel-body{padding:24px;display:flex;flex-direction:column;gap:14px;flex:1;}
.panel-body p{margin:0;font-size:15px;line-height:1.8;color:var(--text-2);}
.tick-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px;}
.tick-list li{position:relative;padding-left:20px;font-size:14px;color:var(--text-2);line-height:1.7;}
.tick-list li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;
  background-image:var(--grad);
}
.panel-foot{margin-top:auto;padding-top:6px;}

/* ---------- split list ---------- */
.split{display:grid;grid-template-columns:1fr;gap:32px;}
@media(min-width:1024px){.split{grid-template-columns:4fr 8fr;gap:56px;align-items:start;}}
.check-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line);}
.check-list li{
  display:flex;gap:16px;align-items:flex-start;
  padding:18px 4px;border-bottom:1px solid var(--line);
  font-size:16px;color:var(--text-2);line-height:1.8;
  transition:color .2s ease,padding-left .2s ease;
}
.check-list li:hover{color:var(--text-1);padding-left:10px;}
.check-list li span.idx{
  font-family:"Inter",ui-monospace,monospace;font-size:13px;color:var(--brand-1);
  flex:0 0 auto;padding-top:4px;letter-spacing:0.08em;
}

/* ---------- data band ---------- */
.data-band{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.data-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
@media(min-width:1024px){.data-grid{grid-template-columns:repeat(4,1fr);gap:24px;}}
.data-item{
  padding:22px;border-radius:var(--radius-md);
  background:rgba(255,255,255,0.03);border:1px solid var(--line);
}
.data-num{
  font-family:"Inter",ui-monospace,monospace;font-weight:800;letter-spacing:-0.01em;
  font-size:clamp(26px,3.4vw,38px);line-height:1.2;
  background-image:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.data-label{margin-top:8px;font-size:13px;color:var(--text-2);line-height:1.7;}
.data-conclusion{
  margin-top:26px;font-size:15px;color:var(--text-1);
  display:inline-flex;align-items:center;gap:10px;
}
.data-conclusion::before{
  content:"";width:34px;height:2px;border-radius:2px;background-image:var(--grad);
}

/* ---------- fit grid ---------- */
.fit-grid{display:grid;grid-template-columns:1fr;gap:26px;}
@media(min-width:768px){.fit-grid{grid-template-columns:repeat(3,1fr);gap:32px;}}
.fit-item{position:relative;padding-top:22px;}
.fit-item::before{
  content:"";position:absolute;top:0;left:0;width:48px;height:2px;border-radius:2px;
  background-image:var(--grad);
}
.fit-item h3{margin:0 0 10px;font-size:19px;font-weight:600;line-height:1.4;}
.fit-item p{margin:0;font-size:15px;color:var(--text-2);line-height:1.8;}

/* ---------- form ---------- */
.form-shell{
  display:grid;grid-template-columns:1fr;gap:32px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px;box-shadow:var(--shadow-card);
}
@media(min-width:768px){.form-shell{padding:38px;}}
@media(min-width:1024px){.form-shell{grid-template-columns:5fr 7fr;gap:52px;padding:48px;}}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px;}
.field label{font-size:14px;color:var(--text-2);}
.field input,.field textarea{
  width:100%;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-sm);
  color:var(--text-1);font-family:inherit;font-size:15px;padding:12px 16px;line-height:1.6;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:120px;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-1);box-shadow:0 0 0 4px rgba(33,230,193,0.16);
}
.form-note{font-size:13px;color:var(--text-3);margin:12px 0 0;line-height:1.7;}
.form-msg{margin-top:14px;font-size:14px;color:var(--brand-1);min-height:20px;}

/* ---------- footer ---------- */
.site-footer{position:relative;background:var(--bg-1);border-top:1px solid var(--line);}
.footer-grad{
  position:absolute;top:0;left:0;right:0;height:2px;
  background-image:var(--grad);opacity:.9;
}
.footer-grid{
  display:grid;grid-template-columns:1fr;gap:34px;padding:56px 0 34px;
}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}}
.footer-brand p{color:var(--text-2);font-size:14px;line-height:1.8;margin:16px 0 18px;max-width:330px;}
.footer-social{display:flex;gap:12px;}
.social-dot{
  width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--text-2);font-size:13px;
  transition:color .2s ease,border-color .2s ease,background-color .2s ease,transform .2s ease;
}
.social-dot:hover{color:var(--brand-1);border-color:var(--brand-1);background:rgba(33,230,193,0.1);transform:translateY(-2px);}
.footer-col h4{margin:0;font-size:15px;font-weight:700;color:var(--text-1);letter-spacing:0.02em;}
.footer-col ul{list-style:none;margin:18px 0 0;padding:0;display:flex;flex-direction:column;gap:11px;}
.footer-col a,.footer-col span{color:var(--text-2);font-size:14px;line-height:1.7;}
.footer-col a{transition:color .2s ease;}
.footer-col a:hover{color:var(--brand-1);}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  padding:20px 0 30px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

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