/* roulang page: index */
:root{
  --bg:#060A14;
  --bg-2:#0A1122;
  --panel:#101B33;
  --primary:#19D3FF;
  --secondary:#45F0C2;
  --accent:#FFB454;
  --text:#EAF2FF;
  --text-2:#A9B7D0;
  --text-3:#70809C;
  --glass:rgba(14,23,42,.66);
  --glass-2:rgba(16,27,51,.78);
  --glass-border:rgba(90,220,255,.16);
  --line:rgba(140,180,220,.14);
  --r-sm:14px;
  --r-card:20px;
  --r-glass:24px;
  --r-pill:999px;
  --shadow-card:0 24px 80px rgba(0,0,0,.38);
  --shadow-soft:0 12px 32px rgba(0,0,0,.28);
  --glow:0 0 24px rgba(25,211,255,.32);
  --glow-strong:0 0 36px rgba(25,211,255,.45);
  --ease:180ms cubic-bezier(.22,.68,.42,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(900px 620px at 12% -8%, rgba(25,211,255,.16), transparent 62%),
    radial-gradient(760px 520px at 92% 6%, rgba(69,240,194,.12), transparent 60%),
    radial-gradient(700px 520px at 50% 108%, rgba(255,180,84,.08), transparent 62%),
    linear-gradient(180deg,#060A14 0%,#0A1122 52%,#060A14 100%);
  z-index:-2;
  pointer-events:none;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  background-image:linear-gradient(rgba(120,180,230,.045) 1px, transparent 1px),
                   linear-gradient(90deg, rgba(120,180,230,.045) 1px, transparent 1px);
  background-size:64px 64px;
  z-index:-1;
  pointer-events:none;
  mask-image:radial-gradient(circle at 50% 25%, #000 0%, transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 25%, #000 0%, transparent 78%);
}
img{max-width:100%;display:block;border-radius:16px;}
a{color:var(--primary);text-decoration:none;transition:color var(--ease),opacity var(--ease);}
a:hover{color:var(--secondary);}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--text);margin:0;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:rgba(25,211,255,.32);color:#fff;}
:focus-visible{outline:2px solid var(--secondary);outline-offset:2px;border-radius:8px;}

.rl-container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}
.section{padding:clamp(56px,8vw,110px) 0;position:relative;}
.section-head{max-width:760px;margin-bottom:clamp(28px,4vw,52px);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--secondary);
  background:rgba(69,240,194,.08);
  border:1px solid rgba(69,240,194,.22);
  border-radius:var(--r-pill);
  padding:6px 14px;
  margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--secondary);box-shadow:0 0 10px var(--secondary);}
h1{font-size:clamp(2.2rem,5vw,4.2rem);font-weight:800;line-height:1.14;letter-spacing:-.02em;}
h2{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:750;line-height:1.28;margin-bottom:14px;}
h3{font-size:1.2rem;font-weight:700;line-height:1.4;}
.lead{color:var(--text-2);font-size:clamp(1rem,1.4vw,1.075rem);line-height:1.85;}
.glass{
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--r-glass);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow-card), inset 0 1px 0 rgba(190,235,255,.07);
}
.divider{height:1px;background:var(--line);border:0;margin:0;}

/* 导航 */
.site-header{position:fixed;top:16px;left:0;right:0;z-index:1035;padding:0 16px;}
.nav-shell{
  max-width:1180px;margin:0 auto;
  display:flex;align-items:center;gap:16px;
  padding:10px 12px 10px 18px;
  border-radius:var(--r-pill);
  background:rgba(10,17,34,.74);
  border:1px solid var(--glass-border);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:0 18px 50px rgba(0,0,0,.46), inset 0 1px 0 rgba(190,235,255,.08);
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:32px;height:32px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  box-shadow:var(--glow);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:9px;border-radius:5px;
  background:rgba(6,10,20,.85);
}
.brand-text{font-size:17px;font-weight:800;color:var(--text);letter-spacing:.01em;white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-item{
  font-size:15px;font-weight:500;color:var(--text-2);
  padding:8px 16px;border-radius:var(--r-pill);
  transition:background var(--ease),color var(--ease),box-shadow var(--ease);
  white-space:nowrap;
}
.nav-item:hover{color:var(--text);background:rgba(25,211,255,.1);}
.nav-item.active{color:#04121c;background:linear-gradient(135deg,var(--primary),var(--secondary));font-weight:600;box-shadow:var(--glow);}
.nav-cta{margin-left:8px;}
.nav-toggle{
  margin-left:auto;width:44px;height:44px;border-radius:50%;
  background:rgba(25,211,255,.1);border:1px solid var(--glass-border);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  cursor:pointer;flex-shrink:0;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:var(--ease);}
@media (min-width:992px){.nav-toggle{display:none;}.nav-menu.collapse{display:flex !important;}}
@media (max-width:991.98px){
  .nav-shell{border-radius:26px;flex-wrap:wrap;padding:12px 16px;}
  .nav-menu{
    width:100%;flex-direction:column;align-items:stretch;gap:4px;
    margin-left:0;padding-top:12px;margin-top:8px;border-top:1px solid var(--line);
  }
  .nav-item{padding:12px 16px;border-radius:16px;}
  .nav-cta{margin:8px 0 4px;text-align:center;}
}

/* 按钮 */
.btn-glow,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 28px;border-radius:var(--r-pill);
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--ease),filter var(--ease),box-shadow var(--ease),background var(--ease);
  white-space:nowrap;
}
.btn-glow{
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  color:#04121c;box-shadow:var(--glow);
}
.btn-glow:hover{transform:translateY(-1px);filter:brightness(1.08);box-shadow:var(--glow-strong);color:#04121c;}
.btn-glow:active{transform:translateY(0);filter:brightness(.96);}
.btn-ghost{
  background:rgba(25,211,255,.07);
  border-color:var(--glass-border);
  color:var(--text);
}
.btn-ghost:hover{transform:translateY(-1px);background:rgba(25,211,255,.14);color:var(--text);filter:brightness(1.06);}
.btn-ghost:active{transform:translateY(0);filter:brightness(.96);}
.btn-sm{padding:10px 20px;font-size:14px;}

/* Hero */
.hero{position:relative;padding:clamp(148px,17vw,206px) 0 clamp(64px,8vw,110px);overflow:hidden;}
.hero-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:.24;filter:saturate(1.15);
  z-index:0;
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(6,10,20,.62) 0%,rgba(6,10,20,.86) 58%,var(--bg) 100%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.12fr .88fr;gap:clamp(28px,4vw,56px);align-items:center;}
.hero-copy h1{margin-bottom:20px;}
.hero-copy h1 em{font-style:normal;background:linear-gradient(100deg,var(--primary),var(--secondary));-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-sub{color:var(--text-2);font-size:clamp(1rem,1.5vw,1.125rem);line-height:1.85;max-width:560px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);}
.hero-points li::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--secondary);box-shadow:0 0 10px rgba(69,240,194,.8);}
.hero-card{padding:26px;}
.hero-card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px;}
.hero-card-top h2{font-size:1.05rem;font-weight:700;margin:0;}
.badge-live{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;color:var(--secondary);
  background:rgba(69,240,194,.1);border:1px solid rgba(69,240,194,.28);
  border-radius:var(--r-pill);padding:5px 12px;
}
.badge-live::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--secondary);animation:pulse 1.8s infinite;}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.35;transform:scale(.75);}}
.hero-list li{
  display:flex;align-items:center;gap:14px;
  padding:14px 16px;border-radius:16px;
  background:rgba(16,27,51,.6);border:1px solid var(--line);
  margin-bottom:10px;transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.hero-list li:hover{transform:translateY(-2px);border-color:rgba(90,220,255,.36);box-shadow:0 0 22px rgba(25,211,255,.16);}
.hero-list .num{
  width:34px;height:34px;border-radius:11px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;color:#04121c;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
}
.hero-list .txt{min-width:0;}
.hero-list .txt strong{display:block;font-size:14.5px;font-weight:600;color:var(--text);}
.hero-list .txt span{font-size:12.5px;color:var(--text-3);}
.hero-card-foot{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);font-size:12.5px;color:var(--text-3);}
@media (max-width:991.98px){
  .hero-inner{grid-template-columns:1fr;}
  .hero-card{max-width:560px;}
}

/* Bento 卖点 */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:18px;}
.bento-card{
  padding:26px;position:relative;overflow:hidden;
  display:flex;flex-direction:column;gap:12px;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.bento-card:hover{transform:translateY(-3px);border-color:rgba(90,220,255,.34);box-shadow:0 26px 70px rgba(0,0,0,.45),0 0 26px rgba(25,211,255,.14);}
.bento-card p{color:var(--text-2);font-size:14.5px;line-height:1.8;}
.b-icon{
  width:44px;height:44px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:700;color:#04121c;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  box-shadow:var(--glow);flex-shrink:0;
}
.b-icon.warm{background:linear-gradient(135deg,var(--accent),#ff8f4d);}
.b-icon.cool{background:linear-gradient(135deg,var(--secondary),#2ec8ff);}
.big{grid-column:span 3;grid-row:span 2;padding:0;overflow:hidden;}
.big .big-media{position:relative;height:210px;overflow:hidden;border-radius:0;}
.big .big-media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.big .big-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,20,.1),rgba(10,17,34,.92));}
.big .big-body{padding:24px 26px 28px;}
.span-3{grid-column:span 3;}
.span-2{grid-column:span 2;}
.span-6{grid-column:span 6;}
.tag{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:600;
  padding:4px 11px;border-radius:var(--r-pill);
  background:rgba(25,211,255,.1);border:1px solid rgba(25,211,255,.24);color:var(--primary);
}
.tag.green{background:rgba(69,240,194,.1);border-color:rgba(69,240,194,.26);color:var(--secondary);}
.tag.amber{background:rgba(255,180,84,.1);border-color:rgba(255,180,84,.28);color:var(--accent);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
@media (max-width:991.98px){
  .bento{grid-template-columns:repeat(4,1fr);}
  .big{grid-column:span 4;grid-row:auto;}
  .span-3{grid-column:span 2;}
  .span-2{grid-column:span 2;}
  .span-6{grid-column:span 4;}
}
@media (max-width:575.98px){
  .bento{grid-template-columns:1fr;}
  .big,.span-3,.span-2,.span-6{grid-column:span 1;}
}

/* 演示区 */
.demo-wrap{display:grid;grid-template-columns:.92fr 1.08fr;gap:clamp(26px,4vw,54px);align-items:start;}
.demo-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px;}
.demo-tab{
  font-size:14px;font-weight:600;color:var(--text-2);
  padding:10px 20px;border-radius:var(--r-pill);
  background:rgba(16,27,51,.7);border:1px solid var(--line);
  cursor:pointer;transition:var(--ease);
}
.demo-tab:hover{color:var(--text);border-color:rgba(90,220,255,.34);}
.demo-tab.active{color:#04121c;background:linear-gradient(135deg,var(--primary),var(--secondary));border-color:transparent;box-shadow:var(--glow);}
.demo-panel{display:none;animation:fade .24s ease;}
.demo-panel.active{display:block;}
@keyframes fade{from{opacity:0;transform:translateY(6px);}to{opacity:1;transform:none;}}
.demo-panel ul{margin:18px 0 26px;display:grid;gap:10px;}
.demo-panel ul li{display:flex;gap:10px;color:var(--text-2);font-size:15px;line-height:1.8;}
.demo-panel ul li::before{content:"✓";color:var(--secondary);font-weight:700;flex-shrink:0;}
.device{
  padding:18px;border-radius:var(--r-glass);
  background:var(--glass-2);border:1px solid var(--glass-border);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
}
.device-bar{display:flex;align-items:center;gap:8px;margin-bottom:14px;}
.device-bar i{width:10px;height:10px;border-radius:50%;background:rgba(140,180,220,.3);display:block;}
.device-bar i:first-child{background:rgba(255,180,84,.6);}
.device-bar i:nth-child(2){background:rgba(69,240,194,.6);}
.device-bar i:nth-child(3){background:rgba(25,211,255,.6);}
.device-shot{border-radius:18px;overflow:hidden;border:1px solid var(--line);position:relative;}
.device-shot img{width:100%;border-radius:0;aspect-ratio:16/10;object-fit:cover;}
.device-shot::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,20,0) 45%,rgba(10,17,34,.72));}
.device-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;}
@media (max-width:991.98px){.demo-wrap{grid-template-columns:1fr;}}

/* 证据区 */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:26px;}
.stat{padding:26px;text-align:left;}
.stat .num{font-size:clamp(1.9rem,3.4vw,2.7rem);font-weight:800;line-height:1.1;background:linear-gradient(120deg,var(--primary),var(--secondary));-webkit-background-clip:text;background-clip:text;color:transparent;}
.stat .lbl{margin-top:8px;color:var(--text-2);font-size:14.5px;}
.evidence-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:18px;}
.case-card{padding:0;overflow:hidden;display:flex;flex-direction:column;}
.case-card img{border-radius:0;width:100%;aspect-ratio:16/9;object-fit:cover;}
.case-body{padding:24px 26px;}
.quote-card{padding:26px;display:flex;flex-direction:column;gap:16px;justify-content:center;}
.quote-card blockquote{margin:0;font-size:15.5px;line-height:1.9;color:var(--text-2);}
.quote-card .who{font-size:13px;color:var(--text-3);}
.logo-wall{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}
.logo-pill{
  font-size:13px;color:var(--text-3);font-weight:600;letter-spacing:.02em;
  padding:10px 20px;border-radius:var(--r-pill);
  background:rgba(16,27,51,.55);border:1px solid var(--line);
  filter:grayscale(1);transition:var(--ease);
}
.logo-pill:hover{filter:grayscale(0);color:var(--text-2);border-color:rgba(90,220,255,.3);}
@media (max-width:991.98px){
  .stats{grid-template-columns:1fr;}
  .evidence-grid{grid-template-columns:1fr;}
}

/* 最新信息 */
.news-wrap{display:grid;grid-template-columns:250px 1fr;gap:26px;align-items:start;}
.news-aside{padding:22px;position:sticky;top:110px;}
.news-aside h3{font-size:1rem;margin-bottom:14px;}
.news-aside ul{display:grid;gap:6px;}
.news-aside a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  font-size:14px;color:var(--text-2);
  padding:10px 14px;border-radius:12px;
  transition:var(--ease);
}
.news-aside a:hover{color:var(--text);background:rgba(25,211,255,.1);}
.news-aside a.is-active{color:#04121c;background:linear-gradient(135deg,var(--primary),var(--secondary));font-weight:600;}
.news-aside a span{font-size:12px;opacity:.7;}
.news-aside .aside-note{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:12.5px;color:var(--text-3);line-height:1.7;}
.news-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;padding:0;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.news-card:hover{transform:translateY(-2px);border-color:rgba(90,220,255,.34);box-shadow:0 28px 70px rgba(0,0,0,.45),0 0 26px rgba(25,211,255,.14);}
.news-thumb{display:block;position:relative;overflow:hidden;}
.news-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;transition:transform 400ms ease;}
.news-card:hover .news-thumb img{transform:scale(1.035);}
.news-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,20,0) 50%,rgba(10,17,34,.7));}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-body h3{font-size:1.075rem;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body h3 a{color:var(--text);}
.news-body h3 a:hover{color:var(--primary);}
.news-body p{color:var(--text-2);font-size:14px;line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:auto;}
.empty-state{
  grid-column:1/-1;padding:56px 24px;text-align:center;
  color:var(--text-3);font-size:15px;
  border:1px dashed var(--line);border-radius:var(--r-glass);
  background:rgba(16,27,51,.4);
}
@media (max-width:991.98px){
  .news-wrap{grid-template-columns:1fr;}
  .news-aside{position:static;}
  .news-list{grid-template-columns:1fr;}
}

/* 价格 */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch;}
.price-card{padding:30px 28px;display:flex;flex-direction:column;gap:18px;position:relative;}
.price-card.featured{
  border-color:rgba(25,211,255,.42);
  box-shadow:0 30px 90px rgba(0,0,0,.5),0 0 34px rgba(25,211,255,.22);
  transform:translateY(-8px);
}
.price-card .plan{font-size:15px;font-weight:700;color:var(--text);}
.price-card .plan small{display:block;margin-top:6px;font-size:13px;font-weight:400;color:var(--text-3);}
.price-num{font-size:clamp(2rem,3.6vw,2.8rem);font-weight:800;line-height:1;color:var(--text);}
.price-num span{font-size:14px;font-weight:500;color:var(--text-3);margin-left:6px;}
.price-features{display:grid;gap:11px;margin-top:4px;}
.price-features li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2);line-height:1.7;}
.price-features li::before{content:"✓";color:var(--secondary);font-weight:700;flex-shrink:0;}
.price-card .btn-glow,.price-card .btn-ghost{margin-top:auto;width:100%;}
.ribbon{
  position:absolute;top:-13px;right:22px;
  font-size:12px;font-weight:700;color:#3a2200;
  background:linear-gradient(135deg,var(--accent),#ffd08a);
  padding:6px 14px;border-radius:var(--r-pill);
  box-shadow:0 8px 22px rgba(255,180,84,.32);
}
@media (max-width:991.98px){
  .price-grid{grid-template-columns:1fr;}
  .price-card.featured{transform:none;}
}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(26px,4vw,56px);align-items:start;}
.faq-aside p{color:var(--text-2);font-size:15px;line-height:1.85;margin:14px 0 24px;}
.accordion-item{
  background:var(--glass) !important;
  border:1px solid var(--glass-border) !important;
  border-radius:var(--r-card) !important;
  margin-bottom:12px;overflow:hidden;
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
}
.accordion-button{
  background:transparent !important;
  color:var(--text) !important;
  font-size:1rem;font-weight:600;line-height:1.6;
  padding:20px 22px;
  box-shadow:none !important;
  border:0;
}
.accordion-button::after{
  filter:invert(84%) sepia(38%) saturate(1400%) hue-rotate(150deg);
  transition:transform 220ms ease;
}
.accordion-button:not(.collapsed){color:var(--primary) !important;}
.accordion-body{padding:0 22px 22px;color:var(--text-2);font-size:14.5px;line-height:1.85;}
@media (max-width:991.98px){.faq-wrap{grid-template-columns:1fr;}}

/* 底部 CTA */
.cta-panel{
  padding:clamp(34px,5vw,64px);
  border-radius:var(--r-glass);
  background:
    radial-gradient(600px 320px at 12% 0%, rgba(25,211,255,.18), transparent 62%),
    radial-gradient(520px 300px at 92% 100%, rgba(69,240,194,.14), transparent 60%),
    rgba(14,23,42,.75);
  border:1px solid var(--glass-border);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(26px,4vw,52px);align-items:center;
  position:relative;overflow:hidden;
}
.cta-panel::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(120,180,230,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(120,180,230,.06) 1px,transparent 1px);
  background-size:52px 52px;
  mask-image:radial-gradient(circle at 30% 30%,#000,transparent 76%);
  -webkit-mask-image:radial-gradient(circle at 30% 30%,#000,transparent 76%);
  pointer-events:none;
}
.cta-panel > *{position:relative;z-index:1;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.lead-form{display:grid;gap:12px;}
.lead-form label{font-size:13.5px;color:var(--text-2);font-weight:600;}
.form-control{
  background:rgba(16,27,51,.72) !important;
  border:1px solid var(--glass-border) !important;
  border-radius:14px !important;
  color:var(--text) !important;
  padding:14px 18px;
  font-size:15px;
  box-shadow:none !important;
}
.form-control::placeholder{color:var(--text-3);}
.form-control:focus{
  border-color:var(--secondary) !important;
  box-shadow:0 0 0 4px rgba(69,240,194,.16) !important;
  background:rgba(16,27,51,.9) !important;
}
.form-tip{font-size:13px;min-height:18px;color:var(--text-3);}
.form-tip.is-ok{color:var(--secondary);}
.form-tip.is-error{color:var(--accent);}
@media (max-width:991.98px){.cta-panel{grid-template-columns:1fr;}}

/* 页脚 */
.site-footer{
  margin-top:clamp(56px,8vw,100px);
  padding:clamp(46px,6vw,72px) 0 26px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,17,34,.4),rgba(6,10,20,.9));
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text{font-size:17px;}
.footer-desc{color:var(--text-2);font-size:14px;line-height:1.85;max-width:330px;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{color:var(--text-2);font-size:14px;position:relative;display:inline-block;}
.footer-col a::after{
  content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
  transition:width var(--ease);
}
.footer-col a:hover{color:var(--text);}
.footer-col a:hover::after{width:100%;}
.footer-contact p{color:var(--text-2);font-size:14px;line-height:1.85;}
.footer-contact .mail{
  display:inline-block;margin-top:10px;font-size:14.5px;font-weight:600;color:var(--primary);
  word-break:break-all;
}
.footer-bottom{
  margin-top:38px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary);}
@media (max-width:991.98px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:575.98px){.footer-grid{grid-template-columns:1fr;}}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:1040;
  display:flex;flex-direction:column;gap:10px;
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity 260ms ease,transform 260ms ease,visibility 260ms ease;
}
.float-cta.show{opacity:1;visibility:visible;transform:none;}
.float-cta .btn-glow,.float-cta .btn-ghost{box-shadow:var(--shadow-soft),var(--glow);}
@media (max-width:767.98px){
  .float-cta{
    right:0;left:0;bottom:0;padding:12px 16px calc(12px + env(safe-area-inset-bottom));
    flex-direction:row;
    background:rgba(10,17,34,.9);
    border-top:1px solid var(--glass-border);
    backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  }
  .float-cta .btn-glow,.float-cta .btn-ghost{flex:1;padding:13px 12px;font-size:14px;}
  .float-cta .btn-ghost{display:none;}
  .section{padding:clamp(38px,7vw,66px) 0;}
  .hero{padding-top:clamp(126px,26vw,160px);}
}

/* 滚动条 */
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#070d1a;}
::-webkit-scrollbar-thumb{background:rgba(25,211,255,.24);border-radius:999px;}
::-webkit-scrollbar-thumb:hover{background:rgba(25,211,255,.4);}

/* roulang page: article */
:root{
  --bg-900:#060A14;
  --bg-800:#0A1122;
  --panel:#101B33;
  --cyan:#19D3FF;
  --mint:#45F0C2;
  --amber:#FFB454;
  --text:#EAF2FF;
  --text-2:#A9B7D0;
  --text-3:#70809C;
  --line:rgba(140,180,220,.14);
  --glass:rgba(14,23,42,.66);
  --glass-line:rgba(90,220,255,.16);
  --radius-s:12px;
  --radius-m:18px;
  --radius-l:24px;
  --shadow-card:0 24px 80px rgba(0,0,0,.38);
  --shadow-glow:0 0 24px rgba(25,211,255,.32);
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:36px;
  --sp-5:56px;
  --sp-6:88px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:
    radial-gradient(1200px 600px at 12% -8%, rgba(25,211,255,.14), transparent 62%),
    radial-gradient(900px 520px at 88% 4%, rgba(69,240,194,.10), transparent 60%),
    linear-gradient(180deg,#060A14 0%,#0A1122 42%,#060A14 100%);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--cyan);text-decoration:none;transition:color .18s ease,opacity .18s ease}
a:hover{color:var(--mint)}
a:focus-visible,button:focus-visible,.btn-glow:focus-visible,.btn-ghost:focus-visible{
  outline:2px solid var(--mint);
  outline-offset:2px;
  border-radius:10px;
}
h1,h2,h3,h4{margin:0;font-weight:750;letter-spacing:-.01em;color:var(--text)}
p{margin:0 0 1em}
.rl-container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:14px;z-index:1040;padding:0 16px}
.nav-shell{
  max-width:1180px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  gap:18px;
  padding:10px 14px 10px 18px;
  border-radius:999px;
  background:rgba(10,17,34,.72);
  border:1px solid var(--glass-line);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:0 18px 50px rgba(0,0,0,.42), inset 0 1px 0 rgba(255,255,255,.05);
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);flex-shrink:0}
.brand:hover{color:var(--text)}
.brand-mark{
  width:26px;height:26px;border-radius:9px;flex:0 0 26px;
  background:linear-gradient(135deg,var(--cyan),var(--mint));
  box-shadow:0 0 18px rgba(25,211,255,.45);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:8px;border-radius:4px;background:#060A14;
}
.brand-text{font-weight:800;font-size:17px;letter-spacing:.02em;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:6px;background:transparent}
.nav-item{
  padding:9px 14px;border-radius:999px;color:var(--text-2);
  font-size:15px;font-weight:500;white-space:nowrap;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease;
}
.nav-item:hover{color:var(--text);background:rgba(25,211,255,.10)}
.nav-item.active{
  color:#031320;background:linear-gradient(135deg,var(--cyan),var(--mint));
  box-shadow:var(--shadow-glow);font-weight:700;
}
.nav-cta{margin-left:8px;font-size:14px}
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border:0;border-radius:999px;
  font-size:15px;font-weight:700;color:#04141f;
  background:linear-gradient(135deg,#19D3FF,#45F0C2);
  box-shadow:var(--shadow-glow);
  transition:transform .18s ease,filter .18s ease,box-shadow .18s ease;
  cursor:pointer;
}
.btn-glow:hover{transform:translateY(-1px);filter:brightness(1.08);color:#04141f;box-shadow:0 0 34px rgba(25,211,255,.5)}
.btn-glow:active{transform:translateY(0);filter:brightness(.96)}
.btn-glow.btn-sm{padding:9px 18px;font-size:14px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;
  border:1px solid var(--glass-line);
  background:rgba(14,23,42,.6);
  color:var(--text);font-size:15px;font-weight:600;
  backdrop-filter:blur(14px);
  transition:transform .18s ease,border-color .18s ease,color .18s ease,box-shadow .18s ease;
}
.btn-ghost:hover{transform:translateY(-1px);color:var(--text);border-color:rgba(69,240,194,.5);box-shadow:0 0 22px rgba(69,240,194,.22)}
.btn-ghost:active{transform:translateY(0);filter:brightness(.96)}
.nav-toggle{
  display:none;width:44px;height:38px;border:1px solid var(--glass-line);border-radius:999px;
  background:rgba(16,27,51,.7);padding:8px 11px;flex-direction:column;justify-content:space-between;cursor:pointer;
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--text-2)}
.nav-toggle:hover span{background:var(--cyan)}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sp-6) 0}
.section-head{max-width:720px;margin-bottom:var(--sp-4)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
  font-size:12.5px;font-weight:600;letter-spacing:.08em;
  color:var(--mint);background:rgba(69,240,194,.08);
  border:1px solid rgba(69,240,194,.24);
}
.section-title{font-size:clamp(1.65rem,3vw,2.45rem);line-height:1.25}
.section-sub{color:var(--text-2);font-size:16.5px;margin-top:14px;margin-bottom:0}
.glass{
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--radius-l);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  position:relative;overflow:hidden;
}
.glass::before{
  content:"";position:absolute;inset:0 0 auto 0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(160,230,255,.5),transparent);
}

/* ---------- 文章头 ---------- */
.article-hero{
  padding:calc(var(--sp-6) - 24px) 0 var(--sp-4);
  position:relative;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  opacity:.20;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 88%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 88%);
  pointer-events:none;
}
.article-hero .rl-container{position:relative;z-index:1}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:22px}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--cyan)}
.crumb span.sep{opacity:.55}
.crumb .here{color:var(--text-2)}
.article-title{
  font-size:clamp(1.9rem,4vw,3.1rem);
  font-weight:800;line-height:1.2;letter-spacing:-.02em;
  max-width:900px;
}
.article-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 14px;border-radius:999px;
  font-size:13px;font-weight:500;color:var(--text-2);
  background:rgba(16,27,51,.72);
  border:1px solid var(--line);
}
.pill i{color:var(--cyan);font-size:12px}
.pill.cat{color:var(--mint);border-color:rgba(69,240,194,.28);background:rgba(69,240,194,.08)}
.pill.cat i{color:var(--mint)}
.pill.src{color:var(--amber);border-color:rgba(255,180,84,.28);background:rgba(255,180,84,.08)}
.pill.src i{color:var(--amber)}

/* ---------- 正文阅读区 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:34px;
  align-items:start;
  padding-bottom:var(--sp-5);
}
.reader{
  padding:clamp(24px,4vw,52px);
  border-radius:var(--radius-l);
  background:linear-gradient(180deg,rgba(14,23,42,.72),rgba(10,17,34,.62));
  border:1px solid var(--glass-line);
  box-shadow:var(--shadow-card);
}
.article-body{font-size:18px;line-height:1.95;color:var(--text-2);max-width:100%}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  font-size:clamp(1.3rem,2.2vw,1.65rem);
  color:var(--text);font-weight:750;
  margin:2.1em 0 .8em;padding-left:16px;position:relative;line-height:1.4;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--cyan),var(--mint));
  box-shadow:0 0 16px rgba(25,211,255,.55);
}
.article-body h3{
  font-size:1.18rem;color:var(--text);font-weight:700;
  margin:1.8em 0 .7em;padding-left:14px;position:relative;line-height:1.5;
}
.article-body h3::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,rgba(25,211,255,.85),rgba(69,240,194,.5));
}
.article-body p{margin:0 0 1.35em;color:var(--text-2)}
.article-body strong{color:var(--text);font-weight:700}
.article-body a{color:var(--cyan);border-bottom:1px solid rgba(25,211,255,.35)}
.article-body a:hover{color:var(--mint);border-bottom-color:rgba(69,240,194,.55)}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:1.35em}
.article-body li{margin-bottom:.65em;color:var(--text-2)}
.article-body li::marker{color:var(--cyan)}
.article-body blockquote{
  margin:1.6em 0;padding:20px 24px;
  border-left:3px solid var(--mint);
  border-radius:0 var(--radius-m) var(--radius-m) 0;
  background:rgba(69,240,194,.06);
  color:var(--text);
  font-style:normal;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  width:100%;border-radius:16px;margin:1.6em 0 10px;
  border:1px solid var(--glass-line);
  box-shadow:0 18px 46px rgba(0,0,0,.4);
}
.article-body figcaption,.article-body .caption{
  font-size:13.5px;color:var(--text-3);text-align:center;margin-bottom:1.6em;
}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15.5px}
.article-body th,.article-body td{
  border:1px solid var(--line);padding:12px 14px;text-align:left;color:var(--text-2);
}
.article-body th{background:rgba(25,211,255,.08);color:var(--text);font-weight:700}
.article-body tr:nth-child(even) td{background:rgba(255,255,255,.015)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}
.article-body code{
  background:rgba(25,211,255,.1);color:var(--mint);
  padding:2px 7px;border-radius:6px;font-size:.92em;
}

/* ---------- 侧栏 ---------- */
.side-card{padding:24px;border-radius:var(--radius-l);margin-bottom:20px}
.side-card h3{font-size:15.5px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.02em}
.side-list{list-style:none;margin:0;padding:0}
.side-list li{padding:11px 0;border-bottom:1px dashed var(--line)}
.side-list li:last-child{border-bottom:0;padding-bottom:0}
.side-list a{display:flex;gap:10px;align-items:flex-start;color:var(--text-2);font-size:15px;line-height:1.6}
.side-list a:hover{color:var(--cyan)}
.side-list i{color:var(--cyan);font-size:12px;margin-top:6px;flex:0 0 auto}
.side-note{font-size:14px;color:var(--text-3);line-height:1.8;margin:0}
.side-cta{display:flex;flex-direction:column;gap:12px;margin-top:6px}
.side-cta .btn-glow,.side-cta .btn-ghost{width:100%;padding:11px 18px;font-size:14.5px}

/* ---------- 空态 ---------- */
.empty-state{padding:64px 24px;text-align:center}
.empty-state .ico{
  width:64px;height:64px;border-radius:20px;margin:0 auto 20px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(25,211,255,.1);border:1px solid var(--glass-line);
  color:var(--cyan);font-size:24px;
}
.empty-state h2{font-size:1.4rem;margin-bottom:12px}
.empty-state p{color:var(--text-2);margin-bottom:22px}

/* ---------- 相关推荐 ---------- */
.rel-title{font-size:clamp(1.4rem,2.4vw,1.9rem);margin-bottom:26px}
.card-grid{display:grid;gap:24px}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.rel-card{
  display:flex;flex-direction:column;
  border-radius:20px;overflow:hidden;
  background:var(--glass);border:1px solid var(--glass-line);
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  height:100%;
}
.rel-card:hover{transform:translateY(-2px);border-color:rgba(69,240,194,.42);box-shadow:0 28px 70px rgba(0,0,0,.46),0 0 26px rgba(25,211,255,.16)}
.rel-thumb{position:relative;aspect-ratio:16/10;overflow:hidden}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,20,.1),rgba(6,10,20,.72))}
.rel-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.rel-card h3{font-size:1.08rem;line-height:1.5;margin-bottom:10px}
.rel-card h3 a{color:var(--text)}
.rel-card h3 a:hover{color:var(--cyan)}
.rel-card p{font-size:14.8px;color:var(--text-2);line-height:1.7;margin-bottom:18px}
.rel-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-3)}
.tag{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;
  color:var(--mint);background:rgba(69,240,194,.09);border:1px solid rgba(69,240,194,.24);
}
.tag.cyan{color:var(--cyan);background:rgba(25,211,255,.1);border-color:rgba(25,211,255,.26)}
.tag.amber{color:var(--amber);background:rgba(255,180,84,.1);border-color:rgba(255,180,84,.26)}

/* ---------- 返回入口 ---------- */
.back-strip{
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  padding:26px 30px;border-radius:var(--radius-l);margin-top:var(--sp-4);
}
.back-strip .txt{color:var(--text-2);font-size:15.5px}
.back-links{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  padding:clamp(34px,5vw,66px);
  border-radius:var(--radius-l);
  background:
    radial-gradient(560px 260px at 14% 0%, rgba(25,211,255,.20), transparent 66%),
    radial-gradient(520px 260px at 88% 100%, rgba(69,240,194,.15), transparent 62%),
    rgba(12,20,38,.82);
  border:1px solid var(--glass-line);
  box-shadow:var(--shadow-card);
}
.cta-panel::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(140,180,220,.07) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(140,180,220,.07) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:radial-gradient(circle at 72% 42%,rgba(0,0,0,.85),transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 72% 42%,rgba(0,0,0,.85),transparent 72%);
}
.cta-panel > *{position:relative;z-index:1}
.cta-panel h2{font-size:clamp(1.6rem,3vw,2.3rem);margin-bottom:16px}
.cta-panel p{color:var(--text-2);max-width:640px;margin-bottom:28px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--sp-6);
  padding:var(--sp-5) 0 28px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,17,34,.5),rgba(6,10,20,.9));
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:36px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-text{font-weight:800;font-size:17px}
.footer-desc{font-size:14.5px;color:var(--text-3);line-height:1.85;margin:0;max-width:330px}
.footer-col h4{font-size:15px;font-weight:700;color:var(--text);margin-bottom:18px}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:11px}
.footer-col a{
  color:var(--text-3);font-size:14.5px;position:relative;padding-bottom:2px;
}
.footer-col a:hover{color:var(--cyan)}
.footer-col a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:1px;
  background:linear-gradient(90deg,var(--cyan),var(--mint));
  transition:width .22s ease;box-shadow:0 0 10px rgba(25,211,255,.6);
}
.footer-col a:hover::after{width:100%}
.footer-contact p{font-size:14.5px;color:var(--text-3);line-height:1.85;margin-bottom:12px}
.footer-contact .mail{color:var(--cyan);font-size:15px;font-weight:600}
.footer-bottom{
  margin-top:var(--sp-4);padding-top:24px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:26px}
}
@media (max-width:991.98px){
  .section{padding:calc(var(--sp-6) * .68) 0}
  .article-layout{grid-template-columns:1fr}
  .side-card{margin-bottom:0}
  .article-side{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}
  .nav-toggle{display:flex}
  .nav-menu{
    position:absolute;left:16px;right:16px;top:74px;
    flex-direction:column;align-items:stretch;gap:6px;
    padding:16px;border-radius:22px;
    background:rgba(10,17,34,.94);
    border:1px solid var(--glass-line);
    backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
    box-shadow:0 26px 60px rgba(0,0,0,.5);
  }
  .nav-menu.show{display:flex}
  .nav-item{padding:12px 16px;border-radius:14px}
  .nav-cta{margin-left:0;margin-top:6px}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .site-header{top:8px;padding:0 12px}
  .nav-shell{padding:8px 10px 8px 14px}
  .brand-text{font-size:15.5px}
  .article-hero{padding:calc(var(--sp-6) * .6) 0 var(--sp-3)}
  .article-body{font-size:17px;line-height:1.9}
  .reader{padding:22px 18px}
  .grid-3{grid-template-columns:1fr}
  .article-side{grid-template-columns:1fr}
  .back-strip{padding:22px 20px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .cta-actions .btn-glow,.cta-actions .btn-ghost{width:100%}
}
@media (max-width:480px){
  .rl-container{padding:0 16px}
  .nav-menu{left:12px;right:12px;top:68px}
  .pill{font-size:12.5px;padding:5px 12px}
  .article-meta{gap:8px;margin-top:20px}
}

/* roulang page: category1 */
:root{
  --bg:#060A14;
  --bg-2:#0A1122;
  --panel:#101B33;
  --primary:#19D3FF;
  --primary-2:#45F0C2;
  --accent:#FFB454;
  --text:#EAF2FF;
  --muted:#A9B7D0;
  --dim:#70809C;
  --line:rgba(140,180,220,.14);
  --glass:rgba(14,23,42,.66);
  --glass-line:rgba(90,220,255,.16);
  --r-sm:12px;
  --r-md:18px;
  --r-lg:24px;
  --r-pill:999px;
  --shadow-card:0 24px 80px rgba(0,0,0,.38);
  --shadow-soft:0 14px 40px rgba(0,0,0,.30);
  --glow:0 0 24px rgba(25,211,255,.32);
  --sp-1:8px;--sp-2:14px;--sp-3:22px;--sp-4:32px;--sp-5:52px;--sp-6:80px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:
    radial-gradient(1100px 620px at 12% -6%, rgba(25,211,255,.14), transparent 60%),
    radial-gradient(820px 520px at 92% 8%, rgba(69,240,194,.10), transparent 62%),
    var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,box-shadow .18s ease,background .18s ease;}
a:hover{color:#7DE6FF;}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:-.01em;}
h1{font-size:clamp(2.0rem,4.2vw,3.4rem);font-weight:800;line-height:1.16;letter-spacing:-.02em;}
h2{font-size:clamp(1.5rem,2.7vw,2.25rem);font-weight:750;line-height:1.28;}
h3{font-size:1.16rem;font-weight:700;line-height:1.45;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--primary-2);
  outline-offset:2px;
  border-radius:8px;
}
.rl-container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  padding:14px 16px 6px;
}
.nav-shell{
  max-width:1180px;margin:0 auto;
  display:flex;align-items:center;gap:14px;
  padding:9px 12px 9px 18px;
  border-radius:var(--r-pill);
  background:rgba(10,17,34,.74);
  border:1px solid var(--glass-line);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:0 18px 60px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.05);
}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:800;font-size:1.02rem;letter-spacing:.01em;}
.brand:hover{color:#fff;}
.brand-mark{
  width:22px;height:22px;border-radius:8px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  box-shadow:0 0 18px rgba(25,211,255,.55);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:6px;border-radius:4px;background:rgba(6,10,20,.85);
}
.brand-text{white-space:nowrap;}
.nav-menu{margin-left:auto;display:flex;align-items:center;gap:6px;}
.nav-item{
  padding:9px 16px;border-radius:var(--r-pill);
  color:var(--muted);font-size:15px;font-weight:600;white-space:nowrap;
}
.nav-item:hover{color:#fff;background:rgba(25,211,255,.10);}
.nav-item.active{
  color:#04121F;
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  box-shadow:0 0 20px rgba(25,211,255,.28);
}
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-pill);border:none;
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  color:#03121C;font-weight:800;font-size:15px;line-height:1.2;
  box-shadow:var(--glow);cursor:pointer;
  transition:transform .18s ease,filter .18s ease,box-shadow .18s ease;
}
.btn-glow:hover{transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 0 34px rgba(25,211,255,.5);color:#03121C;}
.btn-glow:active{transform:translateY(0);filter:brightness(.96);}
.btn-glow.btn-sm{padding:9px 18px;font-size:14px;}
.nav-cta{margin-left:6px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-pill);
  background:rgba(14,23,42,.66);
  border:1px solid var(--glass-line);
  color:var(--text);font-weight:700;font-size:15px;
  backdrop-filter:blur(14px);
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease,color .18s ease;
}
.btn-ghost:hover{
  transform:translateY(-1px);color:#fff;border-color:rgba(25,211,255,.5);
  box-shadow:0 0 26px rgba(25,211,255,.22);
}
.nav-toggle{
  display:none;margin-left:auto;
  width:44px;height:38px;border-radius:var(--r-pill);
  background:rgba(14,23,42,.7);border:1px solid var(--glass-line);
  padding:0 12px;flex-direction:column;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--muted);}
.nav-toggle[aria-expanded="true"] span{background:var(--primary);}

/* ---------- 首屏 ---------- */
.page-hero{
  position:relative;
  margin-top:8px;
  padding:56px 0 48px;
  border-bottom:1px solid var(--line);
  overflow:hidden;
  background-image:linear-gradient(180deg,rgba(6,10,20,.62),rgba(6,10,20,.94)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(140,180,220,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(140,180,220,.055) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 92%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 92%);
  pointer-events:none;
}
.crumbs{position:relative;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--dim);margin-bottom:20px;}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--primary);}
.hero-grid{position:relative;display:grid;grid-template-columns:1.35fr .95fr;gap:40px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.06em;
  color:var(--primary-2);
  background:rgba(69,240,194,.08);
  border:1px solid rgba(69,240,194,.22);
  margin-bottom:18px;
}
.hero-sub{
  margin-top:18px;
  max-width:620px;
  font-size:clamp(1rem,1.4vw,1.12rem);
  color:var(--muted);
  line-height:1.85;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.glass-card{
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-lg);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.05);
}
.hero-card{padding:24px;}
.hero-card h2{font-size:1.05rem;font-weight:700;margin-bottom:16px;color:var(--text);}
.tick-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px solid var(--line);font-size:14.5px;}
.tick-row:last-of-type{border-bottom:none;}
.tick-row span:first-child{color:var(--muted);}
.tick-row span:last-child{font-weight:700;color:var(--primary);}
.hero-card .tip{margin-top:16px;font-size:12.5px;color:var(--dim);line-height:1.7;}

/* ---------- 主体两栏 ---------- */
.body-grid{
  display:grid;
  grid-template-columns:246px minmax(0,1fr);
  gap:44px;
  padding-top:56px;
  padding-bottom:64px;
  align-items:start;
}
.side-nav{position:sticky;top:98px;}
.side-nav .side-title{
  font-size:12.5px;letter-spacing:.14em;color:var(--dim);
  font-weight:700;margin-bottom:14px;text-transform:uppercase;
}
.side-nav ul{display:flex;flex-direction:column;gap:6px;}
.side-nav a{
  display:block;padding:10px 14px;border-radius:var(--r-sm);
  color:var(--muted);font-size:14.5px;font-weight:600;
  border-left:2px solid transparent;
}
.side-nav a:hover{color:#fff;background:rgba(25,211,255,.08);border-left-color:var(--primary);}
.side-note{
  margin-top:22px;padding:16px;border-radius:var(--r-md);
  background:rgba(16,27,51,.6);border:1px solid var(--line);
  font-size:13px;color:var(--dim);line-height:1.75;
}
.side-note strong{color:var(--primary-2);display:block;margin-bottom:6px;font-size:13.5px;}

.block{margin-bottom:60px;}
.block-head{margin-bottom:26px;}
.block-head .kicker{font-size:12.5px;letter-spacing:.14em;color:var(--primary);font-weight:700;margin-bottom:10px;display:block;}
.block-head p{margin-top:12px;color:var(--muted);max-width:720px;line-height:1.85;font-size:15.5px;}

/* 指标条 */
.metrics{
  display:grid;grid-template-columns:repeat(3,1fr);gap:16px;
  padding:22px;border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(25,211,255,.08),rgba(69,240,194,.05));
  border:1px solid var(--glass-line);
  margin-bottom:34px;
}
.metric b{display:block;font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:800;line-height:1.1;color:var(--primary-2);letter-spacing:-.02em;}
.metric span{display:block;margin-top:6px;font-size:13px;color:var(--muted);}

/* Bento 要点 */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:18px;}
.b-card{
  grid-column:span 3;
  padding:26px;
  border-radius:var(--r-lg);
  background:var(--glass);
  border:1px solid var(--glass-line);
  box-shadow:var(--shadow-soft);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  position:relative;
  overflow:hidden;
}
.b-card:hover{transform:translateY(-2px);border-color:rgba(25,211,255,.4);box-shadow:0 0 34px rgba(25,211,255,.16),var(--shadow-soft);}
.b-card:nth-child(1){grid-column:span 4;}
.b-card:nth-child(2){grid-column:span 2;}
.b-card:nth-child(3){grid-column:span 2;}
.b-card:nth-child(4){grid-column:span 4;}
.b-icon{
  width:40px;height:40px;border-radius:12px;margin-bottom:16px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(25,211,255,.10);
  border:1px solid rgba(25,211,255,.28);
  color:var(--primary);font-weight:800;font-size:15px;
}
.b-card:nth-child(even) .b-icon{background:rgba(255,180,84,.10);border-color:rgba(255,180,84,.28);color:var(--accent);}
.b-card p{margin-top:10px;color:var(--muted);font-size:14.5px;line-height:1.8;}
.b-card .tagline{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}

/* 标签 */
.chip{
  display:inline-flex;align-items:center;
  padding:4px 11px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;
  color:var(--muted);
  background:rgba(140,180,220,.08);
  border:1px solid var(--line);
}
.chip.cyan{color:var(--primary);background:rgba(25,211,255,.09);border-color:rgba(25,211,255,.26);}
.chip.mint{color:var(--primary-2);background:rgba(69,240,194,.09);border-color:rgba(69,240,194,.26);}
.chip.warm{color:var(--accent);background:rgba(255,180,84,.10);border-color:rgba(255,180,84,.28);}

/* 时间线 */
.timeline{position:relative;padding-left:30px;}
.timeline::before{
  content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,rgba(25,211,255,.55),rgba(69,240,194,.28),rgba(140,180,220,.06));
}
.tl-item{position:relative;margin-bottom:20px;}
.tl-item:last-child{margin-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-30px;top:26px;
  width:16px;height:16px;border-radius:50%;
  background:var(--bg-2);
  border:2px solid var(--primary);
  box-shadow:0 0 14px rgba(25,211,255,.5);
}
.tl-card{
  display:grid;grid-template-columns:190px minmax(0,1fr);gap:20px;
  padding:20px;border-radius:var(--r-lg);
  background:var(--glass);
  border:1px solid var(--glass-line);
  box-shadow:var(--shadow-soft);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.tl-card:hover{transform:translateY(-2px);border-color:rgba(25,211,255,.36);box-shadow:0 0 30px rgba(25,211,255,.14),var(--shadow-soft);}
.tl-media{
  border-radius:var(--r-md);overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:16/10;background:var(--panel);
}
.tl-media img{width:100%;height:100%;object-fit:cover;}
.tl-body .tl-top{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:10px;}
.tl-body h3{margin-bottom:8px;}
.tl-body p{color:var(--muted);font-size:14.5px;line-height:1.8;}

/* 品类图文 */
.stage-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.stage-card{
  display:flex;gap:16px;align-items:flex-start;
  padding:20px;border-radius:var(--r-lg);
  background:rgba(16,27,51,.58);
  border:1px solid var(--line);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.stage-card:hover{transform:translateY(-2px);border-color:rgba(69,240,194,.34);box-shadow:0 0 28px rgba(69,240,194,.12);}
.stage-thumb{
  flex:0 0 74px;width:74px;height:74px;border-radius:var(--r-md);
  overflow:hidden;border:1px solid var(--line);
}
.stage-thumb img{width:100%;height:100%;object-fit:cover;}
.stage-card p{margin-top:8px;color:var(--muted);font-size:14px;line-height:1.78;}

/* FAQ */
.faq-wrap{background:linear-gradient(180deg,rgba(16,27,51,.42),rgba(6,10,20,0));border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:64px 0;}
.faq-grid{display:grid;grid-template-columns:.85fr 1.35fr;gap:44px;align-items:start;}
.faq-side h2{margin-bottom:16px;}
.faq-side p{color:var(--muted);font-size:15px;line-height:1.85;margin-bottom:22px;}
.accordion-item{
  background:var(--glass)!important;
  border:1px solid var(--glass-line)!important;
  border-radius:var(--r-md)!important;
  margin-bottom:12px;
  overflow:hidden;
  backdrop-filter:blur(16px);
}
.accordion-button{
  background:transparent!important;
  color:var(--text)!important;
  font-weight:700;
  font-size:15.5px;
  padding:18px 20px;
  box-shadow:none!important;
}
.accordion-button:not(.collapsed){color:var(--primary)!important;background:rgba(25,211,255,.06)!important;}
.accordion-button::after{
  width:12px;height:12px;background:none;
  border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);
  transform:rotate(45deg);
  transition:transform .22s ease,border-color .22s ease;
  margin-top:-4px;
}
.accordion-button:not(.collapsed)::after{transform:rotate(-135deg);border-color:var(--primary);}
.accordion-body{padding:0 20px 20px;color:var(--muted);font-size:14.5px;line-height:1.85;}

/* CTA */
.cta-section{padding:20px 0 72px;}
.cta-panel{
  position:relative;overflow:hidden;
  padding:52px 44px;border-radius:28px;
  background:linear-gradient(125deg,rgba(25,211,255,.12),rgba(69,240,194,.07) 55%,rgba(255,180,84,.08));
  border:1px solid var(--glass-line);
  box-shadow:var(--shadow-card);
  display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;
}
.cta-panel::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(140,180,220,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(140,180,220,.06) 1px,transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
}
.cta-panel h2,.cta-panel p,.cta-panel form{position:relative;}
.cta-panel p{margin-top:14px;color:var(--muted);font-size:15.5px;line-height:1.85;max-width:540px;}
.subscribe{display:flex;flex-wrap:wrap;gap:12px;}
.subscribe input{
  flex:1 1 240px;min-width:0;
  padding:13px 18px;border-radius:var(--r-pill);
  background:rgba(6,10,20,.6);
  border:1px solid var(--glass-line);
  color:var(--text);font-size:15px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.subscribe input::placeholder{color:var(--dim);}
.subscribe input:focus{outline:none;border-color:var(--primary-2);box-shadow:0 0 0 3px rgba(69,240,194,.18);}
.form-note{margin-top:12px;font-size:13.5px;color:var(--dim);min-height:20px;}
.form-note.ok{color:var(--primary-2);}
.form-note.err{color:var(--accent);}

/* 页脚 */
.site-footer{
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,17,34,.6),rgba(6,10,20,.95));
  padding:56px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.05rem;margin-bottom:16px;}
.footer-desc{color:var(--dim);font-size:14px;line-height:1.85;max-width:360px;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:var(--muted);font-size:14px;position:relative;}
.footer-col a:hover{color:var(--primary);box-shadow:0 1px 0 var(--primary);}
.footer-contact p{color:var(--dim);font-size:14px;line-height:1.8;margin-bottom:12px;}
.footer-contact .mail{color:var(--primary);font-size:14.5px;font-weight:600;}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  color:var(--dim);font-size:13px;
}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:1050;
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .25s ease,transform .25s ease;
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}

/* 返回入口 */
.back-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:34px;}
.back-row .chip-link{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:var(--r-pill);
  border:1px solid var(--glass-line);
  background:rgba(14,23,42,.6);
  color:var(--muted);font-size:14px;font-weight:600;
}
.back-row .chip-link:hover{color:#fff;border-color:rgba(25,211,255,.45);box-shadow:0 0 22px rgba(25,211,255,.18);}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .hero-grid{grid-template-columns:1.2fr .9fr;gap:30px;}
  .body-grid{grid-template-columns:220px minmax(0,1fr);gap:32px;}
  .faq-grid{gap:32px;}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;row-gap:30px;}
}
@media (max-width:991.98px){
  .nav-toggle{display:flex;}
  .nav-menu{
    position:absolute;left:0;right:0;top:calc(100% + 10px);
    flex-direction:column;align-items:stretch;gap:6px;
    padding:14px;margin:0;
    border-radius:24px;
    background:rgba(10,17,34,.96);
    border:1px solid var(--glass-line);
    backdrop-filter:blur(20px);
    box-shadow:0 24px 60px rgba(0,0,0,.55);
  }
  .nav-menu.collapse:not(.show){display:none;}
  .nav-item{padding:12px 16px;}
  .nav-cta{margin:6px 0 0;}
  .nav-shell{position:relative;}
  .hero-grid{grid-template-columns:1fr;}
  .body-grid{grid-template-columns:1fr;padding-top:36px;}
  .side-nav{position:static;top:auto;}
  .side-nav ul{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:6px;scrollbar-width:none;}
  .side-nav ul::-webkit-scrollbar{display:none;}
  .side-nav a{white-space:nowrap;border-left:none;border:1px solid var(--line);border-radius:var(--r-pill);padding:8px 16px;font-size:14px;}
  .side-nav a:hover{border-left:none;}
  .side-note{margin-top:14px;}
  .faq-grid{grid-template-columns:1fr;}
  .cta-panel{grid-template-columns:1fr;padding:40px 28px;}
  .bento .b-card{grid-column:span 3;}
  .stage-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767.98px){
  .page-hero{padding:38px 0 34px;}
  .block{margin-bottom:46px;}
  .metrics{grid-template-columns:1fr;gap:20px;text-align:left;}
  .bento .b-card{grid-column:span 6;}
  .tl-card{grid-template-columns:1fr;gap:14px;}
  .tl-item::before{top:20px;}
  .faq-wrap{padding:46px 0;}
  .cta-section{padding-bottom:56px;}
  .cta-panel{padding:32px 22px;border-radius:24px;}
  .subscribe input,.subscribe .btn-glow{flex:1 1 100%;width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-desc{max-width:none;}
}
@media (max-width:575.98px){
  body{font-size:15.5px;padding-bottom:76px;}
  .rl-container{padding:0 16px;}
  .site-header{padding:10px 12px 4px;}
  .nav-shell{padding:8px 10px 8px 14px;}
  .brand{font-size:.96rem;}
  .hero-actions{gap:10px;}
  .hero-actions .btn-glow,.hero-actions .btn-ghost{flex:1 1 100%;}
  .tl-card{padding:16px;}
  .stage-card{flex-direction:column;}
  .stage-thumb{width:100%;height:150px;flex:0 0 auto;}
  .float-cta{left:14px;right:14px;bottom:14px;}
  .float-cta .btn-glow{width:100%;}
  .footer-bottom{flex-direction:column;}
}
@media (min-width:992px){
  .nav-menu.collapse{display:flex!important;}
}

/* roulang page: category2 */
:root{
  --rl-bg:#060A14;
  --rl-bg-2:#0A1122;
  --rl-panel:#101B33;
  --rl-primary:#19D3FF;
  --rl-accent:#45F0C2;
  --rl-warm:#FFB454;
  --rl-text:#EAF2FF;
  --rl-muted:#A9B7D0;
  --rl-dim:#70809C;
  --rl-line:rgba(140,180,220,.14);
  --rl-line-strong:rgba(90,220,255,.24);
  --rl-glass:rgba(14,23,42,.66);
  --rl-glass-2:rgba(16,27,51,.82);
  --rl-radius-s:12px;
  --rl-radius:18px;
  --rl-radius-l:24px;
  --rl-pill:999px;
  --rl-shadow:0 24px 80px rgba(0,0,0,.38);
  --rl-shadow-sm:0 12px 34px rgba(0,0,0,.28);
  --rl-glow:0 0 24px rgba(25,211,255,.32);
  --rl-gap:clamp(20px,3vw,34px);
  --rl-section:clamp(58px,7vw,104px);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:
    radial-gradient(1100px 620px at 12% -8%, rgba(25,211,255,.14), transparent 62%),
    radial-gradient(900px 520px at 92% 4%, rgba(69,240,194,.10), transparent 60%),
    linear-gradient(180deg,#060A14 0%,#0A1122 46%,#060A14 100%);
  background-attachment:fixed;
  color:var(--rl-text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--rl-primary);text-decoration:none;transition:color .18s ease,opacity .18s ease;}
a:hover{color:var(--rl-accent);}
h1,h2,h3,h4{color:var(--rl-text);margin:0;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--rl-accent);outline-offset:2px;border-radius:6px;}
.rl-container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}

/* ---------- 顶部悬浮胶囊导航 ---------- */
.site-header{position:sticky;top:0;z-index:1030;padding:14px 0 6px;}
.nav-shell{
  max-width:1180px;margin:0 auto;padding:10px 14px 10px 20px;
  display:flex;align-items:center;gap:18px;
  background:linear-gradient(180deg,rgba(16,27,51,.86),rgba(10,17,34,.72));
  border:1px solid var(--rl-line-strong);
  border-radius:var(--rl-pill);
  box-shadow:0 18px 48px rgba(0,0,0,.42), inset 0 1px 0 rgba(255,255,255,.06);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--rl-text);}
.brand:hover{color:var(--rl-text);}
.brand-mark{
  width:30px;height:30px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--rl-primary),var(--rl-accent));
  box-shadow:0 0 18px rgba(25,211,255,.5);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:8px 9px auto 8px;height:2px;border-radius:2px;
  background:rgba(6,10,20,.7);box-shadow:0 5px 0 rgba(6,10,20,.7),0 10px 0 rgba(6,10,20,.7);
}
.brand-text{font-weight:800;font-size:1.06rem;letter-spacing:.01em;white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-item{
  position:relative;padding:9px 16px;border-radius:var(--rl-pill);
  color:var(--rl-muted);font-size:.94rem;font-weight:600;white-space:nowrap;
  transition:color .18s ease,background .18s ease,box-shadow .18s ease,transform .18s ease;
}
.nav-item:hover{color:var(--rl-text);background:rgba(25,211,255,.10);transform:translateY(-1px);}
.nav-item.active{
  color:#04121C;
  background:linear-gradient(135deg,var(--rl-primary),var(--rl-accent));
  box-shadow:var(--rl-glow);
}
.nav-toggle{
  margin-left:auto;display:none;width:44px;height:38px;border-radius:var(--rl-pill);
  background:rgba(25,211,255,.10);border:1px solid var(--rl-line-strong);
  flex-direction:column;justify-content:center;align-items:center;gap:4px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--rl-text);}
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:var(--rl-pill);border:0;cursor:pointer;
  font-size:.95rem;font-weight:700;color:#04121C;
  background:linear-gradient(135deg,var(--rl-primary),var(--rl-accent));
  box-shadow:var(--rl-glow);
  transition:transform .18s ease,filter .18s ease,box-shadow .18s ease;
}
.btn-glow:hover{color:#04121C;transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 0 34px rgba(25,211,255,.5);}
.btn-glow:active{transform:translateY(0);filter:brightness(.96);}
.btn-glow.btn-sm{padding:9px 20px;font-size:.88rem;}
.nav-cta{margin-left:10px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:var(--rl-pill);cursor:pointer;
  font-size:.95rem;font-weight:600;color:var(--rl-text);
  background:var(--rl-glass);border:1px solid var(--rl-line-strong);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:transform .18s ease,border-color .18s ease,background .18s ease;
}
.btn-ghost:hover{color:var(--rl-text);transform:translateY(-1px);border-color:rgba(69,240,194,.5);background:rgba(20,34,60,.8);}
.btn-ghost:active{transform:translateY(0);}

/* ---------- Hero ---------- */
.hero{position:relative;padding:clamp(46px,6vw,86px) 0 clamp(40px,5vw,64px);overflow:hidden;}
.hero-bg{
  position:absolute;inset:0;background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;opacity:.26;filter:saturate(1.05);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(6,10,20,.42) 0%,rgba(6,10,20,.86) 62%,#060A14 100%),
    repeating-linear-gradient(90deg,rgba(140,180,220,.06) 0 1px,transparent 1px 68px),
    repeating-linear-gradient(0deg,rgba(140,180,220,.05) 0 1px,transparent 1px 68px);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(26px,4vw,54px);align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;margin-bottom:20px;
  border-radius:var(--rl-pill);font-size:.8rem;font-weight:600;letter-spacing:.06em;
  color:var(--rl-accent);background:rgba(69,240,194,.10);border:1px solid rgba(69,240,194,.28);
}
.eyebrow i{font-size:.72rem;}
.hero-title{
  font-size:clamp(2.1rem,4.4vw,3.5rem);font-weight:800;line-height:1.14;letter-spacing:-.02em;
  margin-bottom:18px;
}
.hero-title .hl{
  background:linear-gradient(120deg,var(--rl-primary),var(--rl-accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:clamp(1rem,1.4vw,1.12rem);color:var(--rl-muted);max-width:620px;line-height:1.9;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-note{margin-top:20px;font-size:.86rem;color:var(--rl-dim);display:flex;align-items:center;gap:8px;}
.hero-card{
  position:relative;padding:26px;border-radius:var(--rl-radius-l);
  background:var(--rl-glass);border:1px solid var(--rl-line-strong);
  box-shadow:var(--rl-shadow), inset 0 1px 0 rgba(255,255,255,.06);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
}
.hero-card-head{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.hero-card-head .dot{
  width:10px;height:10px;border-radius:50%;background:var(--rl-accent);
  box-shadow:0 0 12px rgba(69,240,194,.8);
}
.hero-card-head span{font-size:.86rem;color:var(--rl-muted);font-weight:600;letter-spacing:.04em;}
.hero-card h2{font-size:1.12rem;font-weight:700;margin-bottom:14px;}
.entry-list li{
  display:flex;align-items:flex-start;gap:12px;padding:12px 0;
  border-bottom:1px dashed var(--rl-line);
}
.entry-list li:last-child{border-bottom:0;padding-bottom:0;}
.entry-list i{color:var(--rl-primary);margin-top:4px;font-size:.9rem;}
.entry-list strong{display:block;font-size:.95rem;font-weight:700;}
.entry-list em{font-style:normal;font-size:.84rem;color:var(--rl-dim);}
.badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;}
.pill{
  display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:var(--rl-pill);
  font-size:.78rem;font-weight:600;letter-spacing:.02em;
  background:rgba(25,211,255,.10);border:1px solid rgba(25,211,255,.26);color:var(--rl-primary);
}
.pill.green{background:rgba(69,240,194,.10);border-color:rgba(69,240,194,.28);color:var(--rl-accent);}
.pill.warm{background:rgba(255,180,84,.10);border-color:rgba(255,180,84,.30);color:var(--rl-warm);}

/* ---------- 通用板块 ---------- */
.section{padding:var(--rl-section) 0;}
.section-head{max-width:760px;margin-bottom:clamp(28px,3.6vw,46px);}
.section-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:.78rem;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--rl-primary);margin-bottom:14px;
}
.section-tag::before{content:"";width:26px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--rl-primary),var(--rl-accent));}
.section-title{font-size:clamp(1.6rem,2.9vw,2.35rem);font-weight:750;line-height:1.28;margin-bottom:14px;}
.section-desc{color:var(--rl-muted);font-size:1rem;line-height:1.9;}

/* ---------- Bento 卡片墙 ---------- */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:var(--rl-gap);}
.bcard{
  position:relative;display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--rl-radius-l);background:var(--rl-glass);
  border:1px solid var(--rl-line);box-shadow:var(--rl-shadow-sm);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.bcard:hover{transform:translateY(-3px);border-color:var(--rl-line-strong);box-shadow:0 26px 62px rgba(0,0,0,.44),0 0 30px rgba(25,211,255,.16);}
.bcard-body{padding:24px 24px 26px;}
.bcard-body h3{font-size:1.16rem;font-weight:700;margin-bottom:10px;}
.bcard-body p{color:var(--rl-muted);font-size:.94rem;line-height:1.85;}
.bcard .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.bcard-link{
  margin-top:auto;padding:0 24px 24px;display:inline-flex;align-items:center;gap:8px;
  font-size:.88rem;font-weight:700;color:var(--rl-primary);
}
.bcard-link:hover{color:var(--rl-accent);gap:12px;}
.bcard-media{position:relative;height:150px;overflow:hidden;}
.bcard-media img{width:100%;height:100%;object-fit:cover;opacity:.72;transition:transform .5s ease,opacity .3s ease;}
.bcard:hover .bcard-media img{transform:scale(1.05);opacity:.86;}
.bcard-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,20,.10),rgba(10,17,34,.92));}
.span-3{grid-column:span 3;}
.span-2{grid-column:span 2;}
.span-4{grid-column:span 4;}
.bcard.tall .bcard-media{height:230px;}
.bcard.feature{
  background:linear-gradient(160deg,rgba(25,211,255,.12),rgba(14,23,42,.72) 46%);
  border-color:rgba(25,211,255,.34);
}
.bcard-ico{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;margin-bottom:16px;
  background:rgba(25,211,255,.12);border:1px solid rgba(25,211,255,.28);color:var(--rl-primary);font-size:1.05rem;
}
.bcard-ico.green{background:rgba(69,240,194,.12);border-color:rgba(69,240,194,.28);color:var(--rl-accent);}
.bcard-ico.warm{background:rgba(255,180,84,.12);border-color:rgba(255,180,84,.30);color:var(--rl-warm);}

/* ---------- 流程步骤 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.flow-step{
  position:relative;padding:26px 22px;border-radius:var(--rl-radius);
  background:linear-gradient(180deg,rgba(16,27,51,.78),rgba(10,17,34,.62));
  border:1px solid var(--rl-line);box-shadow:var(--rl-shadow-sm);
  transition:transform .2s ease,border-color .2s ease;
}
.flow-step:hover{transform:translateY(-3px);border-color:rgba(69,240,194,.34);}
.flow-num{
  display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:12px;
  font-size:.9rem;font-weight:800;color:#04121C;margin-bottom:14px;
  background:linear-gradient(135deg,var(--rl-primary),var(--rl-accent));
  box-shadow:var(--rl-glow);
}
.flow-step h3{font-size:1.02rem;font-weight:700;margin-bottom:8px;}
.flow-step p{font-size:.9rem;color:var(--rl-muted);line-height:1.82;}

/* ---------- 对照区 ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:var(--rl-gap);}
.compare-col{
  padding:28px;border-radius:var(--rl-radius-l);
  background:var(--rl-glass);border:1px solid var(--rl-line);box-shadow:var(--rl-shadow-sm);
}
.compare-col.good{border-color:rgba(69,240,194,.30);background:linear-gradient(180deg,rgba(69,240,194,.09),rgba(14,23,42,.68));}
.compare-col.warn{border-color:rgba(255,180,84,.28);background:linear-gradient(180deg,rgba(255,180,84,.08),rgba(14,23,42,.68));}
.compare-col h3{font-size:1.1rem;font-weight:700;display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.compare-col.good h3 i{color:var(--rl-accent);}
.compare-col.warn h3 i{color:var(--rl-warm);}
.compare-col ul li{
  display:flex;gap:12px;align-items:flex-start;padding:11px 0;font-size:.94rem;color:var(--rl-muted);
  border-bottom:1px dashed var(--rl-line);line-height:1.8;
}
.compare-col ul li:last-child{border-bottom:0;}
.compare-col.good ul li i{color:var(--rl-accent);margin-top:5px;font-size:.82rem;}
.compare-col.warn ul li i{color:var(--rl-warm);margin-top:5px;font-size:.82rem;}

/* ---------- 证据条 ---------- */
.evidence{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-radius:var(--rl-radius-l);overflow:hidden;
  background:linear-gradient(120deg,rgba(25,211,255,.10),rgba(14,23,42,.72) 58%);
  border:1px solid var(--rl-line-strong);box-shadow:var(--rl-shadow-sm);
}
.evidence-item{padding:30px 24px;border-right:1px solid var(--rl-line);}
.evidence-item:last-child{border-right:0;}
.evidence-num{
  font-size:clamp(1.8rem,3vw,2.4rem);font-weight:800;line-height:1;letter-spacing:-.02em;
  background:linear-gradient(120deg,var(--rl-primary),var(--rl-accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:10px;
}
.evidence-item p{font-size:.9rem;color:var(--rl-muted);}
.evidence-item strong{display:block;font-size:.98rem;font-weight:700;margin-bottom:6px;}
.quote-strip{
  display:grid;grid-template-columns:1.1fr .9fr;gap:var(--rl-gap);align-items:center;
  margin-top:var(--rl-gap);
}
.quote-card{
  padding:26px;border-radius:var(--rl-radius-l);background:var(--rl-glass-2);
  border:1px solid var(--rl-line);box-shadow:var(--rl-shadow-sm);
}
.quote-card p{color:var(--rl-muted);font-size:.98rem;line-height:1.9;}
.quote-meta{margin-top:16px;display:flex;align-items:center;gap:12px;font-size:.84rem;color:var(--rl-dim);}
.quote-meta .avatar{
  width:38px;height:38px;border-radius:50%;
  background:linear-gradient(135deg,var(--rl-primary),var(--rl-accent));opacity:.9;
}
.quote-figure{border-radius:var(--rl-radius-l);overflow:hidden;border:1px solid var(--rl-line);position:relative;}
.quote-figure img{width:100%;height:260px;object-fit:cover;opacity:.82;}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:clamp(26px,4vw,56px);align-items:start;}
.faq-aside h2{font-size:clamp(1.55rem,2.7vw,2.15rem);font-weight:750;line-height:1.3;margin-bottom:14px;}
.faq-aside p{color:var(--rl-muted);font-size:.98rem;line-height:1.9;margin-bottom:24px;}
.faq-aside .btn-ghost{width:100%;max-width:260px;}
.accordion-item{
  background:var(--rl-glass);border:1px solid var(--rl-line) !important;
  border-radius:var(--rl-radius) !important;margin-bottom:14px;overflow:hidden;
  box-shadow:var(--rl-shadow-sm);
}
.accordion-item:last-child{margin-bottom:0;}
.accordion-button{
  background:transparent;color:var(--rl-text);font-weight:700;font-size:1rem;
  padding:20px 22px;box-shadow:none !important;border:0;
}
.accordion-button:not(.collapsed){color:var(--rl-primary);background:rgba(25,211,255,.07);}
.accordion-button::after{
  background-image:none;content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:.8rem;color:var(--rl-primary);width:auto;height:auto;transform:none;
  transition:transform .22s ease;
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.accordion-body{padding:0 22px 22px;color:var(--rl-muted);font-size:.94rem;line-height:1.9;}
.accordion-collapse{transition:height .24s ease;}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;text-align:center;
  padding:clamp(38px,5vw,64px) clamp(24px,4vw,56px);
  border-radius:var(--rl-radius-l);
  background:linear-gradient(140deg,rgba(25,211,255,.14),rgba(14,23,42,.78) 52%,rgba(69,240,194,.12));
  border:1px solid var(--rl-line-strong);box-shadow:var(--rl-shadow);
}
.cta-panel::before{
  content:"";position:absolute;inset:0;opacity:.5;
  background:
    radial-gradient(320px 200px at 16% 20%,rgba(25,211,255,.24),transparent 70%),
    radial-gradient(300px 190px at 84% 80%,rgba(69,240,194,.20),transparent 70%);
}
.cta-panel > *{position:relative;z-index:2;}
.cta-panel h2{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:800;margin-bottom:14px;}
.cta-panel p{color:var(--rl-muted);max-width:640px;margin:0 auto 28px;font-size:1rem;line-height:1.9;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:clamp(40px,6vw,80px);padding:clamp(44px,5vw,72px) 0 26px;
  border-top:1px solid var(--rl-line);
  background:linear-gradient(180deg,rgba(10,17,34,.5),rgba(6,10,20,.96));
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:clamp(22px,3vw,42px);}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-desc{color:var(--rl-dim);font-size:.9rem;line-height:1.9;max-width:340px;}
.footer-col h4{font-size:.95rem;font-weight:700;margin-bottom:16px;color:var(--rl-text);}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul li a{
  position:relative;color:var(--rl-muted);font-size:.9rem;
  transition:color .18s ease;
}
.footer-col ul li a::after{
  content:"";position:absolute;left:0;bottom:-3px;width:0;height:1px;
  background:linear-gradient(90deg,var(--rl-primary),var(--rl-accent));
  transition:width .22s ease;
}
.footer-col ul li a:hover{color:var(--rl-text);}
.footer-col ul li a:hover::after{width:100%;}
.footer-contact p{color:var(--rl-dim);font-size:.9rem;line-height:1.9;margin-bottom:14px;}
.footer-contact .mail{color:var(--rl-primary);font-weight:700;font-size:.94rem;word-break:break-all;}
.footer-contact .mail:hover{color:var(--rl-accent);}
.footer-bottom{
  margin-top:clamp(30px,4vw,48px);padding-top:22px;border-top:1px solid var(--rl-line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  color:var(--rl-dim);font-size:.82rem;
}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:1040;
  display:flex;gap:10px;align-items:center;
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .26s ease,transform .26s ease,visibility .26s ease;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta .btn-glow,.float-cta .btn-ghost{padding:10px 20px;font-size:.86rem;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .hero-inner{grid-template-columns:1fr;}
  .bento{grid-template-columns:repeat(4,1fr);}
  .span-3{grid-column:span 2;}
  .span-2{grid-column:span 2;}
  .span-4{grid-column:span 4;}
}
@media (max-width:991.98px){
  .nav-toggle{display:flex;}
  .nav-menu{
    position:absolute;left:20px;right:20px;top:calc(100% + 10px);
    flex-direction:column;align-items:stretch;gap:6px;margin-left:0;padding:16px;
    background:rgba(10,17,34,.96);border:1px solid var(--rl-line-strong);
    border-radius:var(--rl-radius-l);box-shadow:var(--rl-shadow);
    backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  }
  .nav-menu.show,.nav-menu.collapsing{display:flex;}
  .nav-item{padding:12px 16px;border-radius:14px;}
  .nav-cta{margin:6px 0 0;justify-content:center;}
  .nav-shell{position:relative;}
  .flow{grid-template-columns:repeat(2,1fr);}
  .evidence{grid-template-columns:repeat(2,1fr);}
  .evidence-item:nth-child(2){border-right:0;}
  .evidence-item:nth-child(1),.evidence-item:nth-child(2){border-bottom:1px solid var(--rl-line);}
  .faq-layout{grid-template-columns:1fr;}
  .quote-strip{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767.98px){
  .hero{padding-top:34px;}
  .bento{grid-template-columns:1fr;}
  .span-3,.span-2,.span-4{grid-column:span 1;}
  .compare{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;}
  .section{padding:calc(var(--rl-section) * .62) 0;}
  .hero-actions .btn-glow,.hero-actions .btn-ghost{width:100%;}
  .cta-actions .btn-glow,.cta-actions .btn-ghost{width:100%;}
}
@media (max-width:575.98px){
  .rl-container{padding:0 16px;}
  .brand-text{font-size:.98rem;}
  .evidence{grid-template-columns:1fr;}
  .evidence-item{border-right:0;border-bottom:1px solid var(--rl-line);}
  .evidence-item:last-child{border-bottom:0;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .float-cta{
    left:14px;right:14px;bottom:14px;
    padding-bottom:env(safe-area-inset-bottom,0);
  }
  .float-cta .btn-glow,.float-cta .btn-ghost{flex:1;justify-content:center;}
}
@media (max-width:400px){
  .hero-title{font-size:1.9rem;}
  .bcard-body{padding:20px;}
}