/* roulang page: index */
:root{
  --bg-0:#070B18;
  --bg-1:#0C1228;
  --bg-2:#121A38;
  --line:rgba(140,170,255,.14);
  --line-strong:rgba(140,170,255,.30);
  --brand:#4C6BFF;
  --brand-deep:#3B54E0;
  --brand-2:#2BE0C0;
  --warn:#FFB454;
  --text-1:#E9EEFF;
  --text-2:#A9B6D9;
  --text-3:#6E7C9E;
  --r-lg:20px;
  --r-md:14px;
  --r-sm:12px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.9);
  --shadow-card-hover:0 26px 54px -26px rgba(0,0,0,.95);
  --glow-brand:0 10px 30px -8px rgba(76,107,255,.55);
  --glass:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
}
*,*::before,*::after{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:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  letter-spacing:.01em;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    repeating-linear-gradient(0deg,rgba(140,170,255,.05) 0 1px,transparent 1px 64px),
    repeating-linear-gradient(90deg,rgba(140,170,255,.05) 0 1px,transparent 1px 64px),
    radial-gradient(900px 520px at 12% -8%,rgba(76,107,255,.22),transparent 65%),
    radial-gradient(760px 480px at 92% 6%,rgba(43,224,192,.12),transparent 60%);
  opacity:.85;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:radial-gradient(1200px 700px at 50% 120%,rgba(76,107,255,.14),transparent 70%);
}
img{max-width:100%;display:block;border-style:none;height:auto;}
a{color:var(--text-1);text-decoration:none;transition:color .2s ease;}
a:hover,a:focus{color:var(--brand-2);}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:.005em;}
h1{font-size:clamp(28px,4vw,44px);font-weight:700;}
h2{font-size:clamp(23px,2.6vw,30px);}
h3{font-size:clamp(17px,1.6vw,20px);}
button{font-family:inherit;}
input,textarea,select{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px;border-radius:6px;}

/* Foundation 覆盖 */
.grid-container{max-width:1200px;padding-left:20px;padding-right:20px;}
.grid-x{margin-left:-12px;margin-right:-12px;}
.grid-x>.cell{padding-left:12px;padding-right:12px;}
.button,.button:focus{background:transparent;border:0;padding:0;margin:0;color:inherit;}

/* 容器与板块 */
.section{position:relative;z-index:1;padding:104px 0;}
.section--tight{padding:80px 0;}
.section-head{max-width:740px;margin-bottom:44px;}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:var(--brand-2);margin-bottom:14px;}
.section-head .eyebrow::before{content:"";width:26px;height:1px;background:linear-gradient(90deg,var(--brand-2),transparent);}
.section-head h2{color:var(--text-1);}
.section-head p{margin-top:14px;color:var(--text-2);max-width:34rem;}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head--center p{margin-left:auto;margin-right:auto;}

/* 公告条 */
.notice-bar{
  position:relative;
  z-index:6;
  background:linear-gradient(90deg,rgba(76,107,255,.22),rgba(43,224,192,.14));
  border-bottom:1px solid var(--line);
}
.notice-inner{display:flex;align-items:center;justify-content:center;gap:12px;min-height:42px;font-size:13.5px;color:var(--text-1);}
.notice-inner i{color:var(--brand-2);}
.notice-close{background:transparent;border:0;color:var(--text-2);font-size:16px;line-height:1;cursor:pointer;padding:4px 8px;border-radius:8px;transition:color .2s,background .2s;}
.notice-close:hover{color:var(--text-1);background:rgba(255,255,255,.08);}

/* 头部导航 */
.site-header{position:sticky;top:0;z-index:40;background:rgba(7,11,24,.72);backdrop-filter:blur(16px) saturate(140%);border-bottom:1px solid transparent;transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;}
.site-header.is-stuck{background:rgba(9,13,28,.94);border-bottom-color:var(--line);box-shadow:0 14px 40px -30px rgba(0,0,0,.95);}
.nav-top{display:flex;align-items:center;gap:22px;padding:14px 0;}
.logo{display:inline-flex;align-items:center;gap:11px;flex:0 0 auto;}
.logo-mark{
  width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;
  font-size:19px;font-weight:700;color:#fff;
  background:linear-gradient(150deg,var(--brand),#7A5BFF 55%,var(--brand-2));
  box-shadow:0 8px 22px -10px rgba(76,107,255,.9);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text strong{font-size:16px;font-weight:700;color:var(--text-1);letter-spacing:.02em;}
.logo-text em{font-style:normal;font-size:12px;color:var(--text-3);letter-spacing:.24em;}
.nav-search{position:relative;flex:1 1 auto;max-width:330px;}
.nav-search input{
  width:100%;height:42px;border-radius:999px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  color:var(--text-1);font-size:14px;
  padding:0 44px 0 18px;
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search input:focus{outline:none;border-color:var(--brand);background:rgba(255,255,255,.08);box-shadow:0 0 0 3px rgba(76,107,255,.20);}
.nav-search button{position:absolute;right:6px;top:50%;transform:translateY(-50%);width:32px;height:32px;border-radius:50%;border:0;background:transparent;color:var(--text-2);cursor:pointer;transition:color .2s,background .2s;}
.nav-search button:hover{color:var(--brand-2);background:rgba(255,255,255,.08);}
.nav-actions{display:flex;align-items:center;gap:16px;flex:0 0 auto;margin-left:auto;}
.nav-link-text{font-size:14px;color:var(--text-2);}
.nav-link-text:hover{color:var(--text-1);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;cursor:pointer;
  font-size:14.5px;font-weight:600;
  padding:11px 24px;border-radius:999px;
  transition:transform .18s ease,box-shadow .22s ease,border-color .2s ease,color .2s ease,background .2s ease;
  white-space:nowrap;
}
.btn-primary{
  color:#fff;
  background:linear-gradient(135deg,var(--brand),#6C57FF 60%,#8A6CFF);
  box-shadow:var(--glow-brand);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px -8px rgba(76,107,255,.72);color:#fff;}
.btn-primary:active{transform:translateY(1px);box-shadow:0 8px 20px -10px rgba(76,107,255,.6);}
.btn-ghost{color:var(--brand-2);background:transparent;border-color:rgba(43,224,192,.42);}
.btn-ghost:hover{color:#fff;border-color:var(--brand-2);background:rgba(43,224,192,.10);transform:translateY(-2px);}
.btn-outline{color:var(--text-1);background:rgba(255,255,255,.04);border-color:var(--line-strong);}
.btn-outline:hover{color:#fff;border-color:var(--brand);background:rgba(76,107,255,.14);transform:translateY(-2px);}
.btn-sm{padding:9px 18px;font-size:13.5px;}
.link-more{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:var(--brand-2);position:relative;padding-bottom:2px;}
.link-more::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .25s ease;}
.link-more:hover::after{transform:scaleX(1);}
.link-more i{transition:transform .25s ease;}
.link-more:hover i{transform:translateX(4px);}

.nav-tabs-wrap{border-top:1px solid var(--line);}
.nav-tabs{display:flex;align-items:center;gap:10px;padding:10px 0;overflow-x:auto;scroll-snap-type:x proximity;-ms-overflow-style:none;scrollbar-width:none;}
.nav-tabs::-webkit-scrollbar{display:none;}
.nav-tab{
  flex:0 0 auto;scroll-snap-align:start;
  font-size:14px;font-weight:600;color:var(--text-2);
  padding:8px 18px;border-radius:999px;
  border:1px solid transparent;
  position:relative;transition:color .2s,border-color .2s,background .2s;
}
.nav-tab:hover{color:var(--text-1);border-color:var(--line-strong);background:rgba(255,255,255,.04);}
.nav-tab.is-active{
  color:#fff;border-color:transparent;
  background:linear-gradient(135deg,var(--brand),#6C57FF);
  box-shadow:var(--glow-brand);
}
.nav-tab.is-active::after{content:"";position:absolute;left:50%;bottom:-7px;transform:translateX(-50%);width:34px;height:2px;border-radius:2px;background:var(--brand-2);box-shadow:0 0 14px rgba(43,224,192,.85);}

/* Hero */
.hero{position:relative;z-index:1;padding:74px 0 60px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:auto auto -20% -10%;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(76,107,255,.20),transparent 68%);pointer-events:none;
}
.hero-grid{display:flex;align-items:center;gap:56px;position:relative;}
.hero-copy{flex:1 1 52%;min-width:0;}
.hero-copy .badge{margin-bottom:20px;}
.hero-copy h1{margin-bottom:18px;}
.hero-copy h1 .hl{background:linear-gradient(120deg,var(--brand-2),#7FE9FF);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-sub{font-size:17px;color:var(--text-2);max-width:30rem;margin-bottom:30px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px;}
.trust-item{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13px;color:var(--text-2);
  padding:7px 14px;border-radius:999px;
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
}
.trust-item i{color:var(--brand-2);font-size:12px;}
.hero-visual{flex:1 1 44%;min-width:0;position:relative;}
.hero-figure{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/10;background:linear-gradient(150deg,var(--brand),#5C4BE0 50%,var(--brand-2));box-shadow:var(--shadow-card);}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-figure::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,11,24,.05) 30%,rgba(7,11,24,.82));}
.hero-glass{
  position:absolute;left:22px;right:22px;bottom:20px;
  border-radius:var(--r-md);
  background:rgba(9,13,28,.66);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  padding:16px 18px;
  display:flex;align-items:center;gap:16px;
}
.hero-glass .g-num{font-size:30px;font-weight:700;color:var(--brand-2);font-variant-numeric:tabular-nums;line-height:1;text-shadow:0 0 22px rgba(43,224,192,.5);}
.hero-glass .g-txt{font-size:13px;color:var(--text-2);line-height:1.5;}
.hero-glass .g-txt strong{display:block;color:var(--text-1);font-size:14px;font-weight:600;margin-bottom:2px;}

/* 通用玻璃卡 */
.glass-card{
  position:relative;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
  transition:transform .28s ease,box-shadow .28s ease,border-color .25s ease;
  overflow:hidden;
}
.glass-card::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(180,200,255,.55),transparent);}
.glass-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-card-hover);border-color:var(--line-strong);}

/* 痛点区 */
.pain-card{padding:26px 24px 24px;height:100%;}
.pain-num{font-size:14px;font-weight:700;letter-spacing:.14em;color:var(--brand-2);font-variant-numeric:tabular-nums;display:block;margin-bottom:14px;}
.pain-card h3{font-size:18px;margin-bottom:10px;color:var(--text-1);}
.pain-card p{font-size:14.5px;color:var(--text-2);margin:0;}

/* 方案区 */
.solution{border-radius:var(--r-lg);border:1px solid var(--line);background:var(--glass);backdrop-filter:blur(14px) saturate(140%);box-shadow:var(--shadow-card);padding:30px;position:relative;overflow:hidden;transition:transform .28s ease,box-shadow .28s ease,border-color .25s ease;height:100%;}
.solution::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(180,200,255,.5),transparent);}
.solution:hover{transform:translateY(-6px);box-shadow:var(--shadow-card-hover);border-color:var(--line-strong);}
.solution--big{display:flex;gap:30px;align-items:center;}
.solution--big .sol-text{flex:1 1 52%;min-width:0;}
.solution--big .sol-media{flex:1 1 48%;min-width:0;border-radius:var(--r-md);overflow:hidden;aspect-ratio:16/9;border:1px solid var(--line);background:linear-gradient(150deg,var(--brand),var(--brand-2));}
.solution--big .sol-media img{width:100%;height:100%;object-fit:cover;}
.solution--small{display:flex;gap:20px;align-items:flex-start;padding:24px;}
.solution--small + .solution--small{margin-top:24px;}
.solution--small .sol-media{flex:0 0 116px;border-radius:var(--r-sm);overflow:hidden;aspect-ratio:16/11;border:1px solid var(--line);background:linear-gradient(150deg,var(--brand),var(--brand-2));}
.solution--small .sol-media img{width:100%;height:100%;object-fit:cover;}
.solution h3{margin-bottom:10px;color:var(--text-1);}
.solution .sol-desc{font-size:14.5px;color:var(--text-2);margin-bottom:16px;}
.sol-points{margin:0 0 18px;display:flex;flex-direction:column;gap:9px;}
.sol-points li{display:flex;align-items:flex-start;gap:9px;font-size:14px;color:var(--text-2);}
.sol-points i{color:var(--brand-2);font-size:11px;margin-top:6px;}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;line-height:1;
  padding:6px 12px;border-radius:999px;
  border:1px solid rgba(43,224,192,.42);
  color:var(--brand-2);
  background:rgba(43,224,192,.08);
  white-space:nowrap;
}
.badge--warn{border-color:rgba(255,180,84,.45);color:var(--warn);background:rgba(255,180,84,.10);}
.badge--brand{border-color:rgba(76,107,255,.5);color:#B9C6FF;background:rgba(76,107,255,.14);}

/* 数据区 */
.stats-band{border-radius:var(--r-lg);border:1px solid var(--line);background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.015));backdrop-filter:blur(14px) saturate(140%);box-shadow:var(--shadow-card);padding:46px 34px 34px;position:relative;overflow:hidden;}
.stats-band::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(180,200,255,.5),transparent);}
.stat{text-align:center;padding:0 10px;}
.stat .stat-num{font-size:clamp(36px,5vw,60px);font-weight:700;line-height:1;color:var(--brand-2);font-variant-numeric:tabular-nums;text-shadow:0 0 26px rgba(43,224,192,.42);letter-spacing:-.01em;}
.stat .stat-unit{font-size:16px;font-weight:600;color:var(--text-2);margin-left:4px;}
.stat .stat-label{margin-top:12px;font-size:14px;color:var(--text-2);}
.stat-note{margin-top:32px;padding-top:18px;border-top:1px solid var(--line);text-align:center;font-size:13px;color:var(--text-3);}

/* 最新信息 */
.news-list{display:flex;flex-direction:column;gap:18px;}
.news-card{display:flex;gap:18px;padding:18px;border-radius:var(--r-lg);border:1px solid var(--line);background:var(--glass);backdrop-filter:blur(14px) saturate(140%);box-shadow:var(--shadow-card);transition:transform .26s ease,box-shadow .26s ease,border-color .25s ease;}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);border-color:var(--line-strong);}
.news-thumb{flex:0 0 178px;border-radius:var(--r-md);overflow:hidden;aspect-ratio:16/9;border:1px solid var(--line);background:linear-gradient(150deg,var(--brand),var(--brand-2));}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.news-card:hover .news-thumb img{transform:scale(1.05);}
.news-body{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;gap:8px;}
.news-body h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:0;}
.news-body h3 a{color:var(--text-1);}
.news-body h3 a:hover{color:var(--brand-2);}
.news-body p{font-size:14px;color:var(--text-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;align-items:center;gap:16px;margin-top:auto;font-size:13px;color:var(--text-3);}
.news-meta .read{color:var(--brand-2);font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.side-card{padding:24px;}
.side-card h3{font-size:16px;margin-bottom:16px;color:var(--text-1);}
.tag-cloud{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:22px;}
.tag-chip{font-size:13px;color:var(--text-2);padding:6px 13px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.04);transition:color .2s,border-color .2s,background .2s;}
.tag-chip:hover{color:var(--brand-2);border-color:rgba(43,224,192,.5);background:rgba(43,224,192,.08);}
.side-divider{height:1px;background:var(--line);margin:20px 0;}
.side-list{display:flex;flex-direction:column;gap:12px;}
.side-list a{font-size:14px;color:var(--text-2);display:flex;gap:9px;align-items:flex-start;}
.side-list a:hover{color:var(--brand-2);}
.side-list i{color:var(--brand);font-size:10px;margin-top:7px;}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:34px 20px;max-height:220px;text-align:center;border:1px dashed var(--line-strong);border-radius:var(--r-lg);background:rgba(255,255,255,.02);}
.empty-state .empty-art{width:70px;height:46px;border-radius:12px;background:linear-gradient(135deg,rgba(76,107,255,.5),rgba(43,224,192,.35));}
.empty-state p{margin:0;font-size:14px;color:var(--text-3);}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:18px;padding:22px 4px;font-size:17px;font-weight:600;color:var(--text-1);transition:color .2s;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-2);}
.faq-item .f-idx{font-size:13px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;flex:0 0 30px;}
.faq-item .f-ico{margin-left:auto;flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--line-strong);display:grid;place-items:center;font-size:12px;color:var(--text-2);transition:transform .18s ease,color .2s,border-color .2s;}
.faq-item[open] .f-ico{transform:rotate(180deg);color:var(--brand-2);border-color:rgba(43,224,192,.5);}
.faq-item .f-body{padding:0 4px 24px 52px;font-size:14.8px;color:var(--text-2);max-width:52rem;}
.faq-item .f-body p{margin:0 0 .7em;}
.faq-item .f-body p:last-child{margin-bottom:0;}

/* CTA band */
.cta-band{border-radius:var(--r-lg);border:1px solid var(--line);background:linear-gradient(135deg,rgba(76,107,255,.22),rgba(43,224,192,.12));backdrop-filter:blur(14px) saturate(140%);padding:52px 44px;display:flex;align-items:center;gap:36px;flex-wrap:wrap;box-shadow:var(--shadow-card);position:relative;overflow:hidden;}
.cta-band::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(190,210,255,.6),transparent);}
.cta-band h2{margin-bottom:10px;}
.cta-band p{color:var(--text-2);margin:0;max-width:36rem;font-size:15px;}
.cta-band .cta-actions{margin-left:auto;display:flex;gap:14px;flex-wrap:wrap;}
.privacy-line{margin-top:16px;font-size:13px;color:var(--text-3);}
.privacy-line a{color:var(--brand-2);border-bottom:1px dashed rgba(43,224,192,.5);}
.privacy-line a:hover{color:#fff;border-bottom-color:#fff;}

/* 悬浮 CTA */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:50;
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 24px;border-radius:999px;border:0;cursor:pointer;
  font-size:14.5px;font-weight:600;color:#fff;
  background:linear-gradient(135deg,var(--brand),#6C57FF 60%,#8A6CFF);
  box-shadow:var(--glow-brand);
  transition:transform .2s ease,box-shadow .24s ease;
}
.float-cta:hover{transform:translateY(-2px);box-shadow:0 18px 44px -8px rgba(76,107,255,.75);}
.float-cta:active{transform:translateY(1px);}

/* 弹层 */
.modal-mask{position:fixed;inset:0;z-index:80;display:none;align-items:center;justify-content:center;padding:20px;background:rgba(4,7,16,.65);backdrop-filter:blur(6px);}
.modal-mask.is-open{display:flex;}
.modal-box{width:100%;max-width:520px;max-height:90vh;overflow-y:auto;border-radius:var(--r-lg);border:1px solid var(--line-strong);background:linear-gradient(160deg,#141C3A,#0B1126 70%);box-shadow:0 40px 90px -30px rgba(0,0,0,.95);padding:32px 30px;position:relative;}
.modal-box h3{font-size:21px;margin-bottom:8px;}
.modal-box .modal-sub{font-size:14px;color:var(--text-2);margin-bottom:24px;}
.modal-close{position:absolute;top:16px;right:16px;width:34px;height:34px;border-radius:50%;border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text-2);cursor:pointer;font-size:14px;transition:color .2s,border-color .2s,background .2s;}
.modal-close:hover{color:#fff;border-color:var(--brand);background:rgba(76,107,255,.18);}
.form-row{margin-bottom:18px;}
.form-row label{display:block;font-size:13.5px;color:var(--text-2);margin-bottom:8px;font-weight:600;}
.form-row .req{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--warn);margin-left:6px;vertical-align:middle;}
.form-row input,.form-row textarea,.form-row select{
  width:100%;border-radius:var(--r-sm);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  color:var(--text-1);font-size:14.5px;
  padding:12px 15px;
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.form-row textarea{min-height:102px;resize:vertical;}
.form-row input::placeholder,.form-row textarea::placeholder{color:var(--text-3);}
.form-row input:focus,.form-row textarea:focus,.form-row select:focus{outline:none;border-color:var(--brand);background:rgba(255,255,255,.08);box-shadow:0 0 0 3px rgba(76,107,255,.20);}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--text-2);margin:4px 0 22px;}
.check-row input{width:16px;height:16px;margin-top:3px;accent-color:var(--brand);}
.check-row a{color:var(--brand-2);border-bottom:1px dashed rgba(43,224,192,.5);}
.form-note{font-size:12.5px;color:var(--text-3);margin-top:14px;text-align:center;}
.form-success{display:none;font-size:14px;color:var(--brand-2);margin-top:14px;text-align:center;}
.form-success.is-show{display:block;}

/* 页脚 */
.site-footer{position:relative;z-index:1;margin-top:20px;padding:72px 0 28px;background:linear-gradient(180deg,rgba(9,13,28,.4),rgba(5,8,18,.95));}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(140,170,255,.42),transparent);}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.footer-col h3{font-size:15px;color:var(--text-1);margin-bottom:18px;letter-spacing:.04em;}
.footer-col p{font-size:13.6px;color:var(--text-2);max-width:24rem;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:13.6px;color:var(--text-2);display:inline-flex;align-items:center;gap:8px;transition:color .2s,transform .2s;}
.footer-links a:hover{color:var(--brand);transform:translateX(2px);}
.footer-contact li{font-size:13.6px;color:var(--text-2);margin-bottom:11px;display:flex;gap:9px;align-items:flex-start;}
.footer-contact i{color:var(--brand-2);font-size:13px;margin-top:5px;}
.footer-bottom{margin-top:52px;padding-top:22px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;font-size:12.8px;color:var(--text-3);}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--brand-2);}

/* 响应式 */
@media screen and (max-width:1279px){
  .section{padding:88px 0;}
  .hero{padding:60px 0 48px;}
}
@media screen and (max-width:1023px){
  .section{padding:72px 0;}
  .nav-search{max-width:220px;}
  .hero-grid{flex-direction:column;gap:40px;align-items:stretch;}
  .hero-copy,.hero-visual{flex:1 1 auto;}
  .solution--big{flex-direction:column;align-items:stretch;}
  .solution--big .sol-media{aspect-ratio:16/9;}
  .cta-band{padding:40px 30px;}
  .cta-band .cta-actions{margin-left:0;}
  .news-thumb{flex:0 0 148px;}
}
@media screen and (max-width:767px){
  body{font-size:15.5px;}
  .section,.section--tight{padding:56px 0;}
  .section-head{margin-bottom:30px;}
  .nav-actions .nav-link-text{display:none;}
  .nav-top{gap:14px;padding:12px 0;flex-wrap:wrap;}
  .nav-search{order:3;flex:1 1 100%;max-width:none;}
  .logo-text em{letter-spacing:.16em;}
  .stats-band{padding:34px 20px 26px;}
  .stat{padding:14px 6px;}
  .news-card{flex-direction:column;gap:14px;}
  .news-thumb{flex:0 0 auto;width:100%;}
  .solution--small{flex-direction:row;}
  .solution--big{padding:24px;}
  .cta-band{padding:32px 22px;}
  .float-cta{right:0;left:0;bottom:0;width:100%;border-radius:14px 14px 0 0;justify-content:center;padding:15px 20px;}
  .faq-item .f-body{padding-left:4px;}
  .footer-bottom{padding-bottom:72px;}
}
@media screen and (max-width:519px){
  .solution--small{flex-direction:column;}
  .solution--small .sol-media{flex:0 0 auto;width:100%;}
  .hero-glass{left:14px;right:14px;bottom:14px;padding:13px 14px;gap:12px;}
  .hero-glass .g-num{font-size:24px;}
  .btn{padding:11px 20px;}
}

/* roulang page: article */
:root{
  --bg-0:#070B18;
  --bg-1:#0C1228;
  --bg-2:#121A38;
  --line:rgba(140,170,255,.14);
  --line-strong:rgba(150,180,255,.30);
  --brand:#4C6BFF;
  --brand-deep:#7C4DFF;
  --brand-2:#2BE0C0;
  --warn:#FFB454;
  --text-1:#E9EEFF;
  --text-2:#A9B6D9;
  --text-3:#6E7C9E;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.9);
  --shadow-btn:0 10px 30px -8px rgba(76,107,255,.55);
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Inter,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text-1);
  background:
    radial-gradient(920px 520px at 12% -6%, rgba(76,107,255,.18), transparent 62%),
    radial-gradient(760px 460px at 92% 2%, rgba(43,224,192,.10), transparent 60%),
    radial-gradient(1100px 700px at 50% 110%, rgba(124,77,255,.12), transparent 65%),
    var(--bg-0);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    repeating-linear-gradient(0deg, rgba(140,170,255,.045) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(90deg, rgba(140,170,255,.045) 0 1px, transparent 1px 72px);
}
img{max-width:100%;height:auto;border:0;}
a{color:var(--brand-2);text-decoration:none;}
a:hover{color:#7CF3DC;}
button{font-family:inherit;}
::selection{background:rgba(76,107,255,.42);color:#fff;}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px;}
.grid-container{max-width:1200px;}
.site-header,main,.site-footer{position:relative;z-index:1;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,11,24,.74);
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid var(--line);
  transition:background .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{background:rgba(8,12,26,.92);box-shadow:0 18px 40px -30px rgba(0,0,0,1);}
.nav-top{display:flex;align-items:center;gap:20px;padding:14px 0;}
.logo{display:flex;align-items:center;gap:11px;flex:0 0 auto;color:var(--text-1);}
.logo:hover{color:var(--text-1);}
.logo-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  font-size:19px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  box-shadow:0 10px 24px -12px rgba(76,107,255,.95);
  flex:0 0 auto;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text strong{font-size:16px;font-weight:700;letter-spacing:.6px;}
.logo-text em{font-style:normal;font-size:12px;letter-spacing:3px;color:var(--text-3);}
.nav-search{
  flex:1 1 auto;
  max-width:420px;
  display:flex;align-items:center;
  padding:4px 6px 4px 16px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(255,255,255,.05);
  transition:border-color .25s ease,box-shadow .25s ease;
}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(76,107,255,.20);}
.nav-search input{
  flex:1 1 auto;min-width:0;height:34px;
  background:transparent;border:0;outline:none;
  color:var(--text-1);font-size:14px;
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search button{
  width:32px;height:32px;flex:0 0 auto;
  border:0;border-radius:999px;cursor:pointer;
  color:#fff;font-size:13px;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  transition:transform .2s ease,box-shadow .25s ease;
}
.nav-search button:hover{transform:translateY(-1px);box-shadow:0 8px 20px -10px rgba(76,107,255,.9);}
.nav-actions{display:flex;align-items:center;gap:16px;margin-left:auto;flex:0 0 auto;}
.nav-link-text{font-size:14px;color:var(--text-2);transition:color .2s ease;}
.nav-link-text:hover{color:var(--brand-2);}
.nav-tabs-wrap{border-top:1px solid var(--line);background:rgba(9,14,32,.55);}
.nav-tabs{
  display:flex;align-items:center;gap:10px;
  padding:10px 0;
  overflow-x:auto;
  scroll-snap-type:x proximity;
  -ms-overflow-style:none;
  scrollbar-width:none;
}
.nav-tabs::-webkit-scrollbar{display:none;}
.nav-tab{
  position:relative;flex:0 0 auto;scroll-snap-align:start;
  padding:8px 18px;border-radius:999px;
  border:1px solid var(--line);
  font-size:14px;color:var(--text-2);white-space:nowrap;
  transition:color .2s ease,border-color .2s ease,background .2s ease,box-shadow .3s ease,transform .2s ease;
}
.nav-tab:hover{color:#fff;border-color:var(--line-strong);background:rgba(255,255,255,.05);}
.nav-tab.is-active{
  color:#fff;border-color:transparent;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  box-shadow:0 10px 26px -14px rgba(76,107,255,.95);
}
.nav-tab.is-active::after{
  content:"";position:absolute;left:50%;bottom:-11px;
  width:26px;height:2px;border-radius:2px;
  transform:translateX(-50%);
  background:var(--brand-2);
  box-shadow:0 0 12px rgba(43,224,192,.9);
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1.2;
  padding:12px 26px;border-radius:999px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease,color .2s ease;
}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-primary{
  color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  box-shadow:var(--shadow-btn);
}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 18px 42px -10px rgba(76,107,255,.75);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 8px 20px -10px rgba(76,107,255,.7);}
.btn-outline{background:transparent;border-color:var(--line-strong);color:var(--text-1);}
.btn-outline:hover{color:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(76,107,255,.16);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(1px);}
.btn-text{
  display:inline-block;padding:0;border:0;border-radius:0;background:none;
  color:var(--brand-2);font-size:14px;font-weight:600;position:relative;
}
.btn-text::after{
  content:"";position:absolute;left:0;right:100%;bottom:-4px;height:1px;
  background:currentColor;transition:right .28s ease;
}
.btn-text:hover{color:#7CF3DC;}
.btn-text:hover::after{right:0;}

/* ============ 通用 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.4px;
  border:1px solid rgba(43,224,192,.40);
  color:var(--brand-2);
  background:rgba(43,224,192,.08);
}
.badge.is-warn{border-color:rgba(255,180,84,.42);color:var(--warn);background:rgba(255,180,84,.08);}
.section-head{margin-bottom:34px;}
.section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;margin:0 0 10px;letter-spacing:.5px;}
.section-head p{margin:0;color:var(--text-2);font-size:15px;max-width:640px;}
.glass{
  background:linear-gradient(160deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card), inset 0 1px 0 rgba(255,255,255,.12);
  position:relative;
  overflow:hidden;
}
.glass::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.55),transparent);
  opacity:.7;
}

/* ============ 面包屑 ============ */
.crumb-bar{padding:26px 0 0;}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--brand-2);}
.crumb .sep{color:var(--text-3);opacity:.6;}
.crumb .current{color:var(--brand-2);}

/* ============ 文章头 ============ */
.article-head{padding:26px 0 34px;border-bottom:1px solid var(--line);}
.article-head .head-meta-top{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:16px;}
.article-head h1{
  font-size:clamp(26px,3.4vw,40px);
  font-weight:700;line-height:1.35;letter-spacing:.4px;
  margin:0 0 18px;max-width:900px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:22px;
  font-size:13px;color:var(--text-3);
}
.article-meta span{display:inline-flex;align-items:center;gap:7px;}
.article-meta i{color:var(--brand);opacity:.9;}

/* ============ 正文布局 ============ */
.article-layout{
  display:flex;gap:44px;justify-content:center;align-items:flex-start;
  padding:44px 0 20px;
}
.article-main{flex:1 1 auto;min-width:0;max-width:820px;}
.article-toc{
  display:none;flex:0 0 244px;width:244px;
  position:sticky;top:132px;
  padding:20px 18px;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:linear-gradient(160deg, rgba(255,255,255,.05), rgba(255,255,255,.015));
  backdrop-filter:blur(12px);
  max-height:calc(100vh - 180px);
  overflow-y:auto;
}
.article-toc.is-hidden{display:none !important;}
.article-toc .toc-title{font-size:13px;font-weight:700;letter-spacing:1.5px;color:var(--text-3);margin-bottom:14px;}
.article-toc ul{list-style:none;margin:0;padding:0;}
.article-toc li{margin-bottom:10px;}
.article-toc a{
  display:block;font-size:13.5px;line-height:1.55;color:var(--text-2);
  padding-left:12px;border-left:2px solid transparent;
  transition:color .2s ease,border-color .2s ease,padding-left .2s ease;
}
.article-toc a:hover,.article-toc a.is-current{
  color:#fff;border-left-color:var(--brand-2);padding-left:15px;
}
@media screen and (min-width:1280px){
  .article-toc{display:block;}
}

/* ============ 正文排版 ============ */
.article-body{color:var(--text-2);font-size:16px;line-height:1.75;}
.article-body p{margin:0 0 1.6em;max-width:40em;}
.article-body h2{
  position:relative;
  font-size:clamp(20px,2.2vw,25px);
  font-weight:700;color:var(--text-1);
  line-height:1.45;
  margin:2.2em 0 .9em;
  padding-left:15px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
}
.article-body h3{font-size:18px;font-weight:600;color:var(--text-1);margin:1.8em 0 .7em;}
.article-body h4{font-size:16px;font-weight:600;color:var(--text-1);margin:1.4em 0 .6em;}
.article-body ul,.article-body ol{margin:0 0 1.6em;padding-left:1.4em;}
.article-body li{margin-bottom:.55em;}
.article-body li::marker{color:var(--brand-2);}
.article-body strong{color:var(--text-1);font-weight:600;}
.article-body img, .article-body video{
  display:block;width:100%;max-width:100%;
  border-radius:var(--radius-md);
  margin:1.7em 0 .6em;
  border:1px solid var(--line);
  background:linear-gradient(135deg, rgba(76,107,255,.35), rgba(43,224,192,.25));
}
.article-body figure{margin:0 0 1.6em;}
.article-body figcaption,.article-body .caption{
  font-size:13px;color:var(--text-3);text-align:center;margin-top:2px;
}
.article-body a{border-bottom:1px solid rgba(43,224,192,.42);}
.article-body a:hover{border-bottom-color:var(--brand-2);}
.article-body blockquote{
  margin:1.7em 0;padding:18px 22px;
  border-left:3px solid var(--brand);
  border-radius:0 var(--radius-md) var(--radius-md) 0;
  background:linear-gradient(120deg, rgba(76,107,255,.12), rgba(255,255,255,.02));
  color:var(--text-1);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:13.5px;
  padding:2px 7px;border-radius:6px;
  background:rgba(76,107,255,.14);color:#CFE0FF;
}
.article-body pre{
  margin:1.7em 0;padding:16px 18px;
  background:#080D1C;border:1px solid var(--line);
  border-radius:var(--radius-sm);
  overflow-x:auto;line-height:1.65;
}
.article-body pre code{background:none;padding:0;color:#BFD3FF;}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.7em 0;
  font-size:14px;border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;
}
.article-body th,.article-body td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left;}
.article-body th{background:rgba(76,107,255,.12);color:var(--text-1);font-weight:600;}
.article-body tr:last-child td{border-bottom:0;}
.article-body hr{border:0;height:1px;background:linear-gradient(90deg,transparent,var(--line-strong),transparent);margin:2.4em 0;}

/* 文章缺失态 */
.article-empty{
  padding:52px 32px;text-align:center;border-radius:var(--radius-lg);
  border:1px dashed var(--line-strong);
  background:linear-gradient(160deg, rgba(255,255,255,.045), rgba(255,255,255,.012));
}
.article-empty .empty-art{
  width:96px;height:96px;margin:0 auto 18px;border-radius:26px;
  background:linear-gradient(135deg, rgba(76,107,255,.45), rgba(43,224,192,.35));
  opacity:.75;
}
.article-empty h2{font-size:20px;margin:0 0 8px;color:var(--text-1);}
.article-empty p{margin:0 0 20px;color:var(--text-2);font-size:14px;}

/* ============ 标签行 ============ */
.article-tags{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin:40px 0 0;padding-top:24px;border-top:1px solid var(--line);
}
.article-tags .tag-label{font-size:13px;color:var(--text-3);margin-right:4px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;
  font-size:13px;color:var(--text-2);
  border:1px solid var(--line);
  background:rgba(255,255,255,.035);
  transition:color .2s ease,border-color .2s ease,transform .2s ease;
}
.tag:hover{color:#fff;border-color:var(--brand);transform:translateY(-2px);}

/* ============ 相关推荐 ============ */
.related{padding:80px 0 0;}
.related-card{
  display:flex;flex-direction:column;
  padding:0;border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:linear-gradient(160deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card), inset 0 1px 0 rgba(255,255,255,.12);
  overflow:hidden;height:100%;
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.related-card:hover{transform:translateY(-6px);border-color:var(--line-strong);box-shadow:0 26px 52px -26px rgba(0,0,0,1);}
.related-card .rc-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg, rgba(76,107,255,.4), rgba(43,224,192,.28));}
.related-card .rc-media img{width:100%;height:100%;object-fit:cover;display:block;}
.related-card .rc-body{padding:22px 24px 24px;}
.related-card h3{font-size:18px;font-weight:600;margin:10px 0 10px;color:var(--text-1);line-height:1.5;}
.related-card p{margin:0 0 16px;font-size:14px;color:var(--text-2);}
.related-card.is-wide{flex-direction:row;align-items:stretch;}
.related-card.is-wide .rc-media{flex:0 0 46%;aspect-ratio:auto;min-height:230px;}
.related-card.is-wide .rc-body{flex:1 1 auto;display:flex;flex-direction:column;justify-content:center;padding:28px 32px;}
.related-grid{margin-bottom:24px;}

/* ============ 返回栏目 ============ */
.back-channel{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  margin-top:56px;padding:20px 26px;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:linear-gradient(120deg, rgba(76,107,255,.10), rgba(255,255,255,.02));
}
.back-channel span{font-size:14px;color:var(--text-2);}

/* ============ 底部 CTA ============ */
.cta-band{padding:80px 0 96px;}
.cta-inner{
  padding:44px 44px;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:
    radial-gradient(600px 300px at 88% 10%, rgba(43,224,192,.16), transparent 65%),
    linear-gradient(150deg, rgba(76,107,255,.20), rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card), inset 0 1px 0 rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
}
.cta-inner h2{font-size:clamp(20px,2.4vw,28px);margin:0 0 10px;font-weight:700;}
.cta-inner p{margin:0;color:var(--text-2);font-size:15px;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 表单与弹层 ============ */
.field-row{margin-bottom:16px;}
.field-row label{
  display:block;font-size:13px;color:var(--text-2);margin-bottom:7px;font-weight:600;
}
.field-row label .req{color:var(--warn);margin-left:4px;}
.field-row input[type="text"],
.field-row input[type="tel"],
.field-row input[type="email"],
.field-row select,
.field-row textarea{
  width:100%;
  padding:12px 14px;
  font-size:14px;color:var(--text-1);
  background:rgba(255,255,255,.045);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  outline:none;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field-row textarea{min-height:96px;resize:vertical;line-height:1.65;}
.field-row input::placeholder,.field-row textarea::placeholder{color:var(--text-3);}
.field-row input:focus,.field-row select:focus,.field-row textarea:focus{
  border-color:var(--brand);
  background:rgba(255,255,255,.07);
  box-shadow:0 0 0 3px rgba(76,107,255,.20);
}
.field-row select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.privacy-line{display:flex;align-items:flex-start;gap:9px;font-size:12.5px;color:var(--text-3);line-height:1.6;}
.privacy-line input[type="checkbox"]{margin-top:3px;accent-color:var(--brand);width:15px;height:15px;flex:0 0 auto;}
.privacy-line a{color:var(--brand-2);border-bottom:1px solid rgba(43,224,192,.4);}
.form-tip{margin-top:12px;font-size:13px;color:var(--brand-2);min-height:18px;}

.lead-fab{
  position:fixed;right:26px;bottom:26px;z-index:110;
  box-shadow:0 16px 40px -14px rgba(76,107,255,.85);
}
.lead-modal{position:fixed;inset:0;z-index:130;display:none;overflow-y:auto;}
.lead-modal.is-open{display:block;}
.lead-modal__backdrop{
  position:fixed;inset:0;
  background:rgba(4,7,16,.68);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
}
.lead-modal__panel{
  position:relative;z-index:1;
  max-width:520px;
  margin:7vh auto 40px;
  padding:32px 32px 28px;
  border-radius:var(--radius-lg);
  border:1px solid var(--line-strong);
  background:linear-gradient(160deg, rgba(24,32,64,.96), rgba(10,15,32,.98));
  box-shadow:0 40px 90px -40px rgba(0,0,0,1), inset 0 1px 0 rgba(255,255,255,.14);
}
.lead-modal__panel h2{font-size:22px;margin:0 0 8px;font-weight:700;}
.lead-modal__panel .modal-sub{margin:0 0 22px;font-size:14px;color:var(--text-2);}
.modal-close{
  position:absolute;right:14px;top:14px;
  width:34px;height:34px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  color:var(--text-2);font-size:14px;cursor:pointer;
  transition:color .2s ease,border-color .2s ease,transform .2s ease;
}
.modal-close:hover{color:#fff;border-color:var(--brand);transform:rotate(90deg);}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);
  padding:64px 0 28px;
  background:linear-gradient(180deg, rgba(9,14,32,.5), rgba(6,9,20,.9));
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(76,107,255,.6),rgba(43,224,192,.5),transparent);
}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.footer-col h3{font-size:15px;font-weight:600;color:var(--text-1);margin:0 0 16px;}
.footer-col p{margin:0;font-size:13.5px;color:var(--text-2);line-height:1.8;max-width:280px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:13.5px;color:var(--text-2);transition:color .2s ease,transform .2s ease;}
.footer-links a:hover{color:var(--brand);transform:translateX(2px);}
.footer-contact{list-style:none;margin:0 0 18px;padding:0;display:flex;flex-direction:column;gap:11px;}
.footer-contact li{font-size:13.5px;color:var(--text-2);display:flex;align-items:center;gap:9px;}
.footer-contact i{color:var(--brand-2);font-size:13px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  margin-top:34px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ============ 响应式 ============ */
@media screen and (max-width:1023px){
  .nav-top{flex-wrap:wrap;gap:14px;}
  .nav-search{order:3;max-width:100%;flex:1 1 100%;}
  .nav-actions{margin-left:auto;}
  .footer-col p{max-width:100%;}
  .related-card.is-wide{flex-direction:column;}
  .related-card.is-wide .rc-media{flex:0 0 auto;aspect-ratio:16/9;min-height:0;}
  .article-layout{padding-top:34px;}
}
@media screen and (max-width:767px){
  .article-head{padding:20px 0 26px;}
  .article-meta{gap:14px;}
  .cta-band{padding:56px 0 72px;}
  .cta-inner{padding:30px 24px;}
  .related{padding:56px 0 0;}
  .lead-modal__panel{margin:4vh 16px 32px;padding:26px 22px 22px;}
}
@media screen and (max-width:639px){
  body{font-size:15px;padding-bottom:72px;}
  .logo-text em{letter-spacing:2px;font-size:11px;}
  .nav-actions .nav-link-text{display:none;}
  .nav-tab{padding:7px 14px;font-size:13px;}
  .lead-fab{
    left:0;right:0;bottom:0;width:100%;
    border-radius:0;padding:15px 20px;
    box-shadow:0 -10px 30px -18px rgba(0,0,0,.95);
  }
  .section-head{margin-bottom:24px;}
  .article-body p{max-width:100%;}
  .back-channel{padding:18px 20px;}
}

/* roulang page: category1 */
:root{
  --bg-0:#070B18;
  --bg-1:#0C1228;
  --bg-2:#121A38;
  --line:rgba(140,170,255,.14);
  --line-strong:rgba(160,190,255,.30);
  --brand:#4C6BFF;
  --brand-2:#2BE0C0;
  --warn:#FFB454;
  --text-1:#E9EEFF;
  --text-2:#A9B6D9;
  --text-3:#6E7C9E;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.9);
  --shadow-btn:0 10px 30px -8px rgba(76,107,255,.55);
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    radial-gradient(circle at 12% 6%, rgba(76,107,255,.20), transparent 44%),
    radial-gradient(circle at 88% 14%, rgba(43,224,192,.10), transparent 46%),
    radial-gradient(circle at 50% 100%, rgba(123,91,255,.12), transparent 52%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.55;
  background-image:
    repeating-linear-gradient(0deg, rgba(140,170,255,.05) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(90deg, rgba(140,170,255,.05) 0 1px, transparent 1px 72px);
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-2);text-decoration:none;transition:color .2s ease}
a:hover{color:#fff}
h1,h2,h3,h4{margin:0 0 .55em;color:var(--text-1);font-weight:700;line-height:1.35;letter-spacing:.2px}
h1{font-size:clamp(28px,4vw,44px)}
h2{font-size:clamp(22px,2.6vw,30px)}
h3{font-size:clamp(17px,1.6vw,20px)}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px}
main,footer{position:relative;z-index:1}
.section{padding:clamp(48px,7vw,104px) 0}
.section-head{max-width:760px;margin-bottom:clamp(28px,3.4vw,44px)}
.section-head .eyebrow{display:inline-block;font-size:12.5px;letter-spacing:.22em;color:var(--brand-2);margin-bottom:12px;text-transform:uppercase}
.section-head p{color:var(--text-2);font-size:15.5px;margin:0}
.muted{color:var(--text-3);font-size:13px}

/* 玻璃卡片 */
.glass{
  position:relative;
  background:linear-gradient(160deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card), inset 0 1px 0 rgba(255,255,255,.06);
  overflow:hidden;
  transition:transform .26s ease, border-color .26s ease, box-shadow .26s ease;
}
.glass::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg, transparent, rgba(180,205,255,.55), transparent);
}
.glass:hover{transform:translateY(-6px);border-color:var(--line-strong)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;border:1px solid transparent;
  padding:13px 28px;font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;transition:transform .2s ease, box-shadow .22s ease, border-color .2s ease, color .2s ease;
  text-decoration:none;white-space:nowrap;
}
.btn-primary{background:linear-gradient(120deg,var(--brand),#7B5BFF);color:#fff;box-shadow:var(--shadow-btn)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 40px -8px rgba(76,107,255,.75)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:transparent;border-color:var(--line-strong);color:var(--text-1)}
.btn-outline:hover{color:#fff;border-color:rgba(43,224,192,.6);box-shadow:0 0 0 3px rgba(43,224,192,.08)}
.btn-sm{padding:9px 18px;font-size:13.5px}
.link-more{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:var(--brand-2);position:relative}
.link-more::after{content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:var(--brand-2);transition:width .25s ease}
.link-more:hover{color:#fff}
.link-more:hover::after{width:calc(100% - 20px);background:#fff}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(8,12,26,.82);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  backdrop-filter:blur(18px) saturate(150%);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease, background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 14px 34px -22px rgba(0,0,0,.95);background:rgba(8,12,26,.94)}
.nav-top{display:flex;align-items:center;gap:18px;padding:13px 0}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:38px;height:38px;flex:0 0 auto;border-radius:12px;
  display:grid;place-items:center;color:#fff;font-weight:700;font-size:17px;
  background:linear-gradient(140deg,var(--brand),#7B5BFF);
  box-shadow:0 10px 24px -12px rgba(76,107,255,.9);
}
.logo-text{display:flex;flex-direction:column;line-height:1.18}
.logo-text strong{color:var(--text-1);font-size:16px;font-weight:700;letter-spacing:.4px}
.logo-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.22em}
.nav-search{
  flex:1 1 auto;max-width:360px;display:flex;align-items:center;
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  border-radius:999px;padding:4px 4px 4px 16px;transition:border-color .2s ease, box-shadow .2s ease;
}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(76,107,255,.18)}
.nav-search input{
  flex:1;min-width:0;height:34px;border:0;background:none;color:var(--text-1);
  font-size:14px;outline:none;
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search button{
  width:34px;height:34px;flex:0 0 auto;border:0;border-radius:50%;cursor:pointer;
  background:linear-gradient(120deg,var(--brand),#7B5BFF);color:#fff;transition:transform .18s ease;
}
.nav-search button:hover{transform:scale(1.06)}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.nav-link-text{font-size:14px;color:var(--text-2)}
.nav-link-text:hover{color:#fff}
.nav-tabs-wrap{border-top:1px solid var(--line)}
.nav-tabs{
  display:flex;gap:10px;padding:10px 0;
  overflow-x:auto;scroll-snap-type:x proximity;
  scrollbar-width:none;-ms-overflow-style:none;
}
.nav-tabs::-webkit-scrollbar{display:none}
.nav-tab{
  flex:0 0 auto;scroll-snap-align:start;position:relative;
  padding:8px 18px;border-radius:999px;border:1px solid transparent;
  font-size:14px;color:var(--text-2);transition:all .2s ease;white-space:nowrap;
}
.nav-tab:hover{color:var(--text-1);border-color:var(--line-strong)}
.nav-tab.is-active{
  color:#fff;border-color:transparent;
  background:linear-gradient(120deg,var(--brand),#7B5BFF);
  box-shadow:0 10px 26px -12px rgba(76,107,255,.95);
}
.nav-tab.is-active::after{
  content:"";position:absolute;left:50%;bottom:-9px;transform:translateX(-50%);
  width:38px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,transparent,var(--brand-2),transparent);
  box-shadow:0 0 12px rgba(43,224,192,.85);
}

/* 面包屑 + 页头 */
.breadcrumb{padding:22px 0 0;font-size:13px;color:var(--text-3)}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--brand-2)}
.breadcrumb span.sep{margin:0 8px;opacity:.6}
.page-hero{
  position:relative;margin-top:18px;padding:clamp(38px,5vw,64px);
  border-radius:26px;overflow:hidden;border:1px solid var(--line);
  background-image:linear-gradient(115deg, rgba(7,11,24,.92), rgba(12,18,40,.72) 55%, rgba(18,26,56,.55)),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  box-shadow:var(--shadow-card);
}
.page-hero::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle, rgba(43,224,192,.16), transparent 68%);
  pointer-events:none;
}
.page-hero .tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:999px;
  font-size:12.5px;letter-spacing:.06em;color:var(--brand-2);
  border:1px solid rgba(43,224,192,.32);background:rgba(43,224,192,.07);
}
.tag.warn{color:var(--warn);border-color:rgba(255,180,84,.34);background:rgba(255,180,84,.07)}
.page-hero h1{margin-bottom:14px}
.page-hero .lead{max-width:640px;font-size:16px;color:var(--text-2);margin:0}
.pill-nav{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.pill{
  padding:8px 18px;border-radius:999px;font-size:13.5px;color:var(--text-2);
  border:1px solid var(--line);background:rgba(255,255,255,.03);transition:all .2s ease;
}
.pill:hover{color:#fff;border-color:var(--line-strong);transform:translateY(-1px)}

/* 卡片网格 */
.card-grid{margin-left:-12px;margin-right:-12px;row-gap:24px}
.card-grid > .cell{display:flex;padding-left:12px;padding-right:12px}
.card-grid > .cell > *{width:100%}
.card{padding:24px;display:flex;flex-direction:column;gap:14px}
.card h3{margin:0;font-size:19px}
.card .desc{font-size:14.5px;color:var(--text-2);margin:0}
.card .link-more{margin-top:auto}
.media-16x9{
  position:relative;aspect-ratio:16/9;border-radius:var(--radius-md);overflow:hidden;
  background:linear-gradient(140deg,var(--brand),#7B5BFF);
}
.media-16x9 img{width:100%;height:100%;object-fit:cover}
.media-16x9::after{
  content:"";position:absolute;inset:auto 0 0 0;height:46%;
  background:linear-gradient(180deg, transparent, rgba(7,11,24,.72));
}
.feature-lg{padding:clamp(24px,3vw,36px)}
.feature-lg .inner-text{display:flex;flex-direction:column;gap:16px}
.feature-lg h2{font-size:clamp(22px,2.4vw,28px);margin:0}
.point-list{display:flex;flex-direction:column;gap:10px;margin:0}
.point-list li{position:relative;padding-left:22px;font-size:14.5px;color:var(--text-2)}
.point-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  background:linear-gradient(140deg,var(--brand-2),var(--brand));
  box-shadow:0 0 10px rgba(43,224,192,.6);
}
.module-card .media-16x9{margin-bottom:16px;border-radius:var(--radius-md)}

/* 数据区 */
.metrics-band{
  padding:clamp(28px,3.6vw,44px);border-radius:24px;
  background:linear-gradient(160deg, rgba(76,107,255,.14), rgba(43,224,192,.06));
  border:1px solid var(--line);
}
.metric{text-align:center;padding:8px 4px}
.metric-num{
  font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:clamp(34px,4.6vw,54px);font-weight:700;color:#fff;line-height:1.05;
  text-shadow:0 0 26px rgba(76,107,255,.6);
}
.metric-num .unit{font-size:.4em;margin-left:6px;color:var(--brand-2);text-shadow:none;font-weight:600}
.metric-label{margin-top:8px;font-size:14px;color:var(--text-2)}
.metrics-note{margin-top:22px;text-align:center;font-size:13px;color:var(--text-3)}

/* FAQ */
.faq-list{margin-top:8px}
.faq-item{border-top:1px solid var(--line)}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;
  padding:20px 6px;font-size:16.5px;font-weight:600;color:var(--text-1);
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:#fff}
.faq-item .idx{font-size:13px;color:var(--brand-2);font-variant-numeric:tabular-nums;font-weight:600}
.faq-item summary .icon{
  margin-left:auto;flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;font-size:15px;color:var(--text-2);
  border:1px solid var(--line);transition:transform .18s ease, color .18s ease, border-color .18s ease;
}
.faq-item[open] summary .icon{transform:rotate(45deg);color:var(--brand-2);border-color:rgba(43,224,192,.4)}
.faq-body{padding:0 6px 22px 44px;font-size:14.8px;color:var(--text-2)}

/* CTA */
.cta-band{
  position:relative;padding:clamp(32px,4.4vw,56px);border-radius:26px;overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(140deg, rgba(76,107,255,.20), rgba(43,224,192,.08) 70%, rgba(18,26,56,.4));
  box-shadow:var(--shadow-card);
}
.cta-band h2{margin-bottom:12px}
.cta-band p{max-width:620px;color:var(--text-2)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:22px}

/* 页脚 */
.site-footer{
  margin-top:clamp(48px,6vw,96px);
  border-top:1px solid transparent;
  background:linear-gradient(180deg, rgba(12,18,40,.4), rgba(7,11,24,.96));
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg, transparent, rgba(76,107,255,.7), rgba(43,224,192,.6), transparent);
}
.site-footer .grid-container{padding-top:clamp(40px,5vw,64px)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-col h3{font-size:14px;letter-spacing:.14em;color:var(--text-1);margin-bottom:16px}
.footer-col p{font-size:14px;color:var(--text-3);line-height:1.8}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--text-2);transition:color .2s ease, transform .2s ease}
.footer-links a:hover{color:var(--brand-2);transform:translateX(2px)}
.footer-contact{display:flex;flex-direction:column;gap:10px;margin-bottom:18px}
.footer-contact li{font-size:14px;color:var(--text-2);display:flex;align-items:center;gap:9px}
.footer-contact i{color:var(--brand-2)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  margin-top:22px;padding:20px 0 26px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* 表单 */
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;color:var(--text-2);margin-bottom:7px}
.field .req{color:var(--warn);margin-left:4px}
.field input[type=text],.field input[type=tel],.field input[type=email],
.field select,.field textarea{
  width:100%;padding:11px 14px;font-size:14.5px;color:var(--text-1);
  background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:var(--radius-sm);
  transition:border-color .2s ease, box-shadow .2s ease;outline:none;
}
.field textarea{min-height:96px;resize:vertical}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 50%,calc(100% - 14px) 50%;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(76,107,255,.20)}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--text-3);line-height:1.7;margin:14px 0 18px}
.check-row input{margin-top:4px;accent-color:var(--brand)}
.check-row a{color:var(--brand-2)}

/* 悬浮触发 + 弹层 */
.lead-fab{
  position:fixed;right:24px;bottom:24px;z-index:90;
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 24px;border:0;border-radius:999px;cursor:pointer;
  font-size:15px;font-weight:600;color:#fff;
  background:linear-gradient(120deg,var(--brand),#7B5BFF);
  box-shadow:0 14px 34px -10px rgba(76,107,255,.8);
  transition:transform .2s ease, box-shadow .22s ease;
}
.lead-fab:hover{transform:translateY(-2px);box-shadow:0 20px 42px -10px rgba(76,107,255,.95)}
.lead-modal{
  position:fixed;inset:0;z-index:120;display:none;
  align-items:flex-start;justify-content:center;
  padding:5vh 16px;overflow:auto;
}
.lead-modal.is-open{display:flex}
.lead-modal-backdrop{
  position:fixed;inset:0;background:rgba(4,7,16,.7);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.lead-modal-panel{
  position:relative;z-index:2;width:100%;max-width:540px;
  padding:clamp(24px,3vw,34px);
}
.lead-modal-panel h2{font-size:22px;margin-bottom:8px}
.lead-modal-sub{font-size:14px;color:var(--text-3);margin-bottom:22px}
.lead-modal-close{
  position:absolute;right:16px;top:14px;width:34px;height:34px;
  border-radius:50%;border:1px solid var(--line);background:rgba(255,255,255,.04);
  color:var(--text-2);font-size:20px;line-height:1;cursor:pointer;transition:all .2s ease;
}
.lead-modal-close:hover{color:#fff;border-color:var(--line-strong)}
.privacy-note{font-size:12.5px;color:var(--text-3);margin-top:14px;line-height:1.7}

/* 响应式 */
@media screen and (max-width:1023px){
  .nav-search{max-width:240px}
  .feature-lg .inner-text{padding-top:22px}
}
@media screen and (max-width:767px){
  .nav-top{flex-wrap:wrap;gap:12px}
  .nav-search{order:3;max-width:none;width:100%}
  .nav-actions{gap:10px}
  .nav-actions .nav-link-text{display:none}
  .breadcrumb{font-size:12.5px}
  .faq-body{padding-left:6px}
}
@media screen and (max-width:640px){
  body::after{opacity:.35}
  .section{padding:44px 0}
  .page-hero{padding:28px 20px;border-radius:20px}
  .cta-band{padding:28px 20px;border-radius:20px}
  .metric{text-align:left}
  .footer-bottom{flex-direction:column;gap:6px}
  .lead-fab{left:0;right:0;bottom:0;width:100%;justify-content:center;border-radius:0;padding:15px 16px}
  body{padding-bottom:58px}
}

/* roulang page: category2 */
:root{
  --bg-0:#070B18;
  --bg-1:#0C1228;
  --bg-2:#121A38;
  --line:rgba(140,170,255,.14);
  --line-strong:rgba(140,170,255,.30);
  --brand:#4C6BFF;
  --brand-2:#2BE0C0;
  --warn:#FFB454;
  --text-1:#E9EEFF;
  --text-2:#A9B6D9;
  --text-3:#6E7C9E;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.9);
  --shadow-glow:0 10px 30px -8px rgba(76,107,255,.55);
  --container:1200px;
  --glass:linear-gradient(160deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text-1);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 520px at 12% -6%, rgba(76,107,255,.16), transparent 62%),
    radial-gradient(760px 460px at 96% 4%, rgba(43,224,192,.10), transparent 60%),
    repeating-linear-gradient(0deg, rgba(140,170,255,.035) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(90deg, rgba(140,170,255,.035) 0 1px, transparent 1px 64px);
  background-attachment:fixed,fixed,fixed,fixed;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0 0 14px;font-weight:700;line-height:1.3;color:var(--text-1);letter-spacing:.2px}
h1{font-size:clamp(28px,4vw,44px)}
h2{font-size:clamp(22px,2.6vw,30px)}
h3{font-size:19px}
p{margin:0 0 14px;color:var(--text-2)}
p:last-child{margin-bottom:0}
a{color:var(--brand-2);text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:#7ef3dc}
img{max-width:100%;display:block}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
::selection{background:rgba(76,107,255,.4);color:#fff}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px}

.grid-container{
  max-width:var(--container);
  padding-left:24px;
  padding-right:24px;
  margin-left:auto;
  margin-right:auto;
  width:100%;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease,color .25s ease;
  white-space:nowrap;
}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),#7A5CFF);
  color:#fff;
  border-color:rgba(255,255,255,.08);
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px -10px rgba(76,107,255,.75);color:#fff}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 18px -8px rgba(76,107,255,.6)}
.btn-outline{
  background:transparent;
  color:var(--brand-2);
  border-color:var(--line-strong);
}
.btn-outline:hover{color:#8ef7e2;border-color:rgba(43,224,192,.55);transform:translateY(-2px)}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost{
  background:rgba(255,255,255,.04);
  color:var(--text-1);
  border-color:var(--line);
}
.btn-ghost:hover{color:#fff;border-color:var(--line-strong);transform:translateY(-2px)}
.link-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-2);
  position:relative;
  padding-bottom:2px;
}
.link-text::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:0;height:1px;
  background:var(--brand-2);
  transition:width .25s ease;
}
.link-text:hover::after{width:100%}
.link-text i{font-size:11px;transition:transform .25s ease}
.link-text:hover i{transform:translateX(3px)}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 11px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.3px;
  border:1px solid rgba(43,224,192,.45);
  color:var(--brand-2);
  background:rgba(43,224,192,.08);
}
.badge-warn{border-color:rgba(255,180,84,.5);color:var(--warn);background:rgba(255,180,84,.08)}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:2px;
  color:var(--brand-2);
  margin-bottom:10px;
  text-transform:uppercase;
}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(7,11,24,.74);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{
  background:rgba(9,14,32,.92);
  border-bottom-color:var(--line);
  box-shadow:0 12px 34px -26px rgba(0,0,0,.95);
}
.nav-top{
  display:flex;
  align-items:center;
  gap:20px;
  padding:14px 0;
}
.logo{
  display:flex;
  align-items:center;
  gap:11px;
  flex-shrink:0;
}
.logo-mark{
  width:38px;height:38px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  background:linear-gradient(140deg,var(--brand),#7A5CFF);
  color:#fff;
  font-size:18px;
  font-weight:700;
  box-shadow:0 10px 22px -12px rgba(76,107,255,.9);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:16px;color:var(--text-1);letter-spacing:1px}
.logo-text em{font-style:normal;font-size:11px;letter-spacing:3px;color:var(--text-3)}
.nav-search{
  flex:1;
  max-width:320px;
  display:flex;
  align-items:center;
  gap:6px;
  background:rgba(255,255,255,.045);
  border:1px solid var(--line);
  border-radius:999px;
  padding:4px 6px 4px 16px;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.nav-search:focus-within{
  border-color:rgba(76,107,255,.7);
  box-shadow:0 0 0 3px rgba(76,107,255,.2);
}
.nav-search input{
  flex:1;
  min-width:0;
  background:transparent;
  border:0;
  outline:none;
  color:var(--text-1);
  font-size:14px;
  padding:7px 0;
  margin:0;
  height:auto;
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search button{
  width:34px;height:34px;
  flex-shrink:0;
  border:0;
  border-radius:999px;
  background:linear-gradient(135deg,var(--brand),#7A5CFF);
  color:#fff;
  cursor:pointer;
  font-size:13px;
  transition:transform .2s ease;
}
.nav-search button:hover{transform:scale(1.06)}
.nav-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:18px;
  flex-shrink:0;
}
.nav-link-text{
  font-size:14px;
  color:var(--text-2);
  font-weight:500;
}
.nav-link-text:hover{color:var(--text-1)}
.nav-tabs-wrap{border-top:1px solid var(--line);background:rgba(10,15,34,.6)}
.nav-tabs{
  display:flex;
  gap:10px;
  padding:10px 0;
  overflow-x:auto;
  scroll-snap-type:x proximity;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.nav-tabs::-webkit-scrollbar{display:none}
.nav-tab{
  position:relative;
  flex:0 0 auto;
  scroll-snap-align:start;
  padding:8px 18px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:14px;
  font-weight:500;
  color:var(--text-2);
  white-space:nowrap;
  transition:color .22s ease,border-color .22s ease,background .22s ease;
}
.nav-tab:hover{color:var(--text-1);border-color:var(--line-strong)}
.nav-tab.is-active{
  color:#fff;
  background:linear-gradient(135deg,var(--brand),#7A5CFF);
  border-color:rgba(255,255,255,.1);
  box-shadow:0 10px 26px -14px rgba(76,107,255,.95);
}
.nav-tab.is-active::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:-9px;
  transform:translateX(-50%);
  width:44%;
  height:2px;
  border-radius:2px;
  background:var(--brand-2);
  box-shadow:0 0 12px rgba(43,224,192,.9);
}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:22px 0 0}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:9px;
  font-size:13px;
  color:var(--text-3);
}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--brand-2)}
.crumb .sep{color:var(--text-3);opacity:.6}
.crumb .current{color:var(--text-1);font-weight:600}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;
  padding:44px 0 52px;
  overflow:hidden;
}
.page-head::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(110deg, rgba(7,11,24,.94) 0%, rgba(12,18,40,.86) 48%, rgba(18,26,56,.72) 100%), url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  opacity:.95;
  z-index:-1;
}
.page-head .grid-container{position:relative;z-index:1}
.page-head-inner{max-width:820px}
.page-head h1{margin-bottom:14px}
.page-head .lead{
  font-size:17px;
  color:var(--text-2);
  max-width:44ch;
  margin-bottom:22px;
}
.anchor-pills{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.anchor-pills a{
  padding:8px 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  font-size:13px;
  font-weight:500;
  color:var(--text-2);
  transition:color .22s ease,border-color .22s ease,transform .22s ease;
}
.anchor-pills a:hover{
  color:var(--text-1);
  border-color:var(--line-strong);
  transform:translateY(-2px);
}

/* ---------- 板块 ---------- */
.section{padding:96px 0}
.section-alt{background:linear-gradient(180deg, rgba(18,26,56,.5), rgba(7,11,24,0));}
.section-head{max-width:720px;margin-bottom:44px}
.section-head p{font-size:15px}

/* ---------- 玻璃卡通用 ---------- */
.glass{
  position:relative;
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card), inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.glass::before{
  content:"";
  position:absolute;
  top:0;left:14px;right:14px;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(255,255,255,.35), transparent);
  pointer-events:none;
}
.glass:hover{
  transform:translateY(-6px);
  border-color:rgba(140,170,255,.34);
}

/* ---------- 步骤卡 ---------- */
.step-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.step-card{
  padding:24px;
  display:flex;
  flex-direction:column;
}
.step-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:16px;
}
.step-no{
  font-size:30px;
  font-weight:700;
  letter-spacing:1px;
  color:var(--brand-2);
  font-variant-numeric:tabular-nums;
  line-height:1;
}
.step-tag{
  font-size:12px;
  color:var(--text-3);
  border:1px solid var(--line);
  border-radius:999px;
  padding:2px 10px;
}
.step-thumb{
  border-radius:var(--radius-md);
  overflow:hidden;
  aspect-ratio:16/9;
  margin-bottom:18px;
  background:linear-gradient(140deg,var(--brand),#7A5CFF);
  border:1px solid var(--line);
}
.step-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.step-card h3{font-size:18px;margin-bottom:10px}
.step-card p{font-size:14px;line-height:1.8;margin-bottom:16px;color:var(--text-2)}
.step-card .link-text{margin-top:auto}

/* ---------- 准备清单 ---------- */
.check-panel{
  padding:34px;
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:36px;
  align-items:start;
}
.check-list li{
  display:flex;
  gap:14px;
  padding:14px 0;
  border-bottom:1px solid var(--line);
  font-size:15px;
  color:var(--text-2);
}
.check-list li:last-child{border-bottom:0}
.check-list i{
  color:var(--brand-2);
  margin-top:5px;
  font-size:14px;
}
.check-side{
  background:rgba(76,107,255,.08);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:24px;
}
.check-side h3{font-size:17px;margin-bottom:12px}
.check-side p{font-size:14px}
.check-side .badge{margin-bottom:12px}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;margin:0 auto}
.faq-item{
  border-top:1px solid var(--line);
  padding:4px 0;
}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;
  align-items:center;
  gap:14px;
  padding:20px 4px;
  cursor:pointer;
  list-style:none;
  font-size:16px;
  font-weight:600;
  color:var(--text-1);
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-2)}
.faq-num{
  font-size:13px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
  flex:0 0 auto;
}
.faq-q{flex:1}
.faq-icon{
  position:relative;
  width:16px;
  height:16px;
  flex:0 0 auto;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--text-2);
  transform:translate(-50%,-50%);
  border-radius:2px;
  transition:transform .18s ease,background .18s ease;
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item[open] .faq-icon::before{background:var(--brand-2)}
.faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);background:var(--brand-2)}
.faq-a{
  padding:0 4px 22px 42px;
  border-top:1px solid var(--line);
  margin-top:-1px;
  padding-top:16px;
}
.faq-a p{font-size:14.5px;line-height:1.85}

/* ---------- CTA ---------- */
.cta-band{
  padding:56px 42px;
  text-align:center;
  border-radius:var(--radius-lg);
  background:linear-gradient(135deg, rgba(76,107,255,.22), rgba(43,224,192,.10)), var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  width:320px;height:320px;
  right:-90px;top:-140px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(76,107,255,.34), transparent 65%);
  pointer-events:none;
}
.cta-band h2{position:relative;z-index:1}
.cta-band p{max-width:52ch;margin:0 auto 26px;position:relative;z-index:1}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  justify-content:center;
  position:relative;
  z-index:1;
}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:20px;
  background:linear-gradient(180deg, rgba(12,18,40,.6), rgba(7,11,24,.95));
  position:relative;
  padding-top:70px;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(76,107,255,.7), rgba(43,224,192,.6), transparent);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:11px;
  margin-bottom:16px;
}
.footer-col h3{
  font-size:15px;
  letter-spacing:1px;
  margin-bottom:16px;
  color:var(--text-1);
}
.footer-col p{font-size:13.5px;line-height:1.85;color:var(--text-3)}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{
  font-size:14px;
  color:var(--text-2);
  transition:color .2s ease,transform .2s ease;
  display:inline-block;
}
.footer-links a:hover{color:var(--brand);transform:translateX(2px)}
.footer-contact{display:flex;flex-direction:column;gap:11px;margin-bottom:18px}
.footer-contact li{
  display:flex;
  align-items:center;
  gap:9px;
  font-size:13.5px;
  color:var(--text-2);
}
.footer-contact i{color:var(--brand-2);width:16px;text-align:center}
.footer-bottom{
  margin-top:34px;
  padding:20px 0 26px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:space-between;
  font-size:13px;
  color:var(--text-3);
}

/* ---------- 悬浮触发按钮 ---------- */
.lead-float{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:70;
  padding:13px 24px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.12);
  background:linear-gradient(135deg,var(--brand),#7A5CFF);
  color:#fff;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  box-shadow:var(--shadow-glow);
  display:inline-flex;
  align-items:center;
  gap:9px;
  transition:transform .22s ease,box-shadow .25s ease;
}
.lead-float:hover{transform:translateY(-3px);box-shadow:0 18px 42px -10px rgba(76,107,255,.8)}
.lead-float:active{transform:translateY(1px)}

/* ---------- 弹层 ---------- */
.lead-modal{
  position:fixed;
  inset:0;
  z-index:120;
  display:none;
  align-items:center;
  justify-content:center;
  padding:24px;
  background:rgba(4,7,16,.72);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
}
.lead-modal.is-open{display:flex}
.modal-panel{
  width:100%;
  max-width:520px;
  max-height:88vh;
  overflow-y:auto;
  border-radius:var(--radius-lg);
  padding:30px;
  background:linear-gradient(160deg, rgba(26,36,72,.96), rgba(12,18,40,.97));
  border:1px solid var(--line-strong);
  box-shadow:0 40px 80px -30px rgba(0,0,0,.95);
}
.modal-head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:16px;
  margin-bottom:8px;
}
.modal-head h2{font-size:21px;margin-bottom:0}
.modal-close{
  width:34px;height:34px;
  flex:0 0 auto;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text-2);
  cursor:pointer;
  transition:color .2s ease,border-color .2s ease,transform .2s ease;
}
.modal-close:hover{color:#fff;border-color:var(--line-strong);transform:rotate(90deg)}
.modal-sub{font-size:13.5px;color:var(--text-3);margin-bottom:22px}
.field{margin-bottom:18px}
.field label{
  display:block;
  font-size:13.5px;
  font-weight:600;
  color:var(--text-2);
  margin-bottom:8px;
}
.field label .req{
  display:inline-block;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--warn);
  margin-left:6px;
  vertical-align:middle;
}
.field input,
.field textarea{
  width:100%;
  background:rgba(255,255,255,.045);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  padding:12px 14px;
  color:var(--text-1);
  font-size:14.5px;
  font-family:inherit;
  outline:none;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.field textarea{min-height:96px;resize:vertical}
.field input:focus,
.field textarea:focus{
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(76,107,255,.2);
}
.field input::placeholder,
.field textarea::placeholder{color:var(--text-3)}
.privacy-row{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:20px;
  line-height:1.7;
}
.privacy-row input{width:16px;height:16px;margin-top:3px;accent-color:var(--brand);flex:0 0 auto}
.privacy-row a{color:var(--brand-2)}
.form-note{
  font-size:12.5px;
  color:var(--text-3);
  margin-top:14px;
  text-align:center;
}
.form-success{
  display:none;
  padding:12px 16px;
  border-radius:var(--radius-sm);
  border:1px solid rgba(43,224,192,.45);
  background:rgba(43,224,192,.1);
  color:var(--brand-2);
  font-size:13.5px;
  margin-bottom:18px;
}
.form-success.is-visible{display:block}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .step-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .nav-search{max-width:220px}
  .check-panel{grid-template-columns:1fr;gap:26px}
  .cta-band{padding:44px 26px}
}
@media (max-width:767px){
  .nav-top{flex-wrap:wrap;gap:14px;padding:12px 0}
  .nav-search{order:3;flex:1 1 100%;max-width:none}
  .nav-actions{gap:14px}
  .page-head{padding:34px 0 42px}
  .step-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;justify-content:flex-start}
}
@media (max-width:639px){
  .grid-container{padding-left:16px;padding-right:16px}
  .section{padding:48px 0}
  body{font-size:15px}
  .nav-link-text{display:none}
  .step-card{padding:20px}
  .check-panel{padding:22px}
  .faq-a{padding-left:4px}
  .lead-float{
    left:16px;
    right:16px;
    bottom:16px;
    justify-content:center;
    padding:14px 20px;
  }
  .cta-band{padding:36px 20px}
}

/* roulang page: category3 */
:root{
  --bg-0:#070B18;
  --bg-1:#0C1228;
  --bg-2:#121A38;
  --line:rgba(140,170,255,.14);
  --line-strong:rgba(140,170,255,.28);
  --brand:#4C6BFF;
  --brand-2:#2BE0C0;
  --brand-3:#7A5BFF;
  --warn:#FFB454;
  --text-1:#E9EEFF;
  --text-2:#A9B6D9;
  --text-3:#6E7C9E;
  --radius-card:20px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.9);
  --container:1200px;
  --sec-y:104px;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--text-1);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(circle at 12% 6%, rgba(76,107,255,.18), transparent 46%),
    radial-gradient(circle at 88% 2%, rgba(43,224,192,.10), transparent 42%),
    repeating-linear-gradient(0deg, rgba(140,170,255,.045) 0 1px, transparent 1px 46px),
    repeating-linear-gradient(90deg, rgba(140,170,255,.045) 0 1px, transparent 1px 46px);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
p{margin:0 0 14px;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:.2px;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
input,textarea,select{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px;}
.grid-container{max-width:var(--container);padding-left:24px;padding-right:24px;}
.show-for-sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;}

/* ============ 通用组件 ============ */
.glass{
  position:relative;
  background:linear-gradient(160deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card), inset 0 1px 0 rgba(255,255,255,.07);
  overflow:hidden;
}
.glass::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.45),transparent);
  pointer-events:none;
}
.glass-hover{transition:transform .28s ease, border-color .28s ease, box-shadow .28s ease;}
.glass-hover:hover{transform:translateY(-6px);border-color:rgba(140,170,255,.34);box-shadow:0 26px 52px -26px rgba(0,0,0,.95), inset 0 1px 0 rgba(255,255,255,.1);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.3px;
  transition:transform .2s ease, box-shadow .25s ease, background .25s ease, color .2s ease, border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  color:#fff;
  background:linear-gradient(120deg,var(--brand),var(--brand-3));
  box-shadow:0 10px 30px -8px rgba(76,107,255,.55);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 40px -10px rgba(76,107,255,.78);color:#fff;}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 18px -8px rgba(76,107,255,.6);}
.btn-outline{
  color:var(--text-1);border:1px solid var(--line-strong);background:rgba(255,255,255,.02);
}
.btn-outline:hover{color:#fff;border-color:rgba(140,170,255,.6);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(1px);}
.btn-sm{padding:9px 18px;font-size:13.5px;}
.btn-block{width:100%;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-2);
  position:relative;
}
.text-link::after{
  content:"";position:absolute;left:0;right:22px;bottom:-3px;height:1px;background:currentColor;
  transform:scaleX(0);transform-origin:left;transition:transform .26s ease;
}
.text-link:hover::after{transform:scaleX(1);}
.text-link i{font-size:11px;transition:transform .26s ease;}
.text-link:hover i{transform:translateX(3px);}

.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--radius-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.2px;
  border:1px solid rgba(43,224,192,.4);color:var(--brand-2);background:rgba(43,224,192,.08);
}
.badge-warn{border-color:rgba(255,180,84,.42);color:var(--warn);background:rgba(255,180,84,.09);}
.badge-plain{border-color:var(--line-strong);color:var(--text-2);background:rgba(255,255,255,.03);}

.sec-head{margin-bottom:44px;max-width:760px;}
.sec-head h2{font-size:clamp(22px,2.4vw,29px);margin-bottom:12px;}
.sec-head p{color:var(--text-2);font-size:15.5px;margin:0;}
.sec-tag{
  display:inline-block;margin-bottom:14px;font-size:13px;font-weight:700;letter-spacing:1.6px;
  color:var(--brand-2);text-transform:uppercase;
}
.section{padding:var(--sec-y) 0;}
.section-tight{padding:72px 0;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(9,14,32,.72);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.site-header.is-scrolled{
  background:rgba(8,12,28,.9);
  border-bottom-color:var(--line);
  box-shadow:0 14px 34px -26px rgba(0,0,0,.95);
}
.nav-top{
  display:flex;align-items:center;gap:26px;padding:16px 0;
}
.logo{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.logo-mark{
  width:42px;height:42px;border-radius:14px;display:grid;place-items:center;
  font-size:20px;font-weight:700;color:#fff;
  background:linear-gradient(140deg,var(--brand),var(--brand-3));
  box-shadow:0 10px 26px -12px rgba(76,107,255,.95);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text strong{font-size:17px;letter-spacing:.6px;}
.logo-text em{font-style:normal;font-size:12px;color:var(--text-3);letter-spacing:3px;}
.nav-search{
  flex:1 1 auto;max-width:360px;display:flex;align-items:center;
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  border-radius:var(--radius-pill);padding:4px 6px 4px 18px;
  transition:border-color .22s ease, box-shadow .22s ease;
}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(76,107,255,.2);}
.nav-search input{
  flex:1;background:transparent;border:0;color:var(--text-1);font-size:14px;padding:8px 0;outline:none;
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search button{
  width:34px;height:34px;border-radius:50%;display:grid;place-items:center;
  color:var(--text-2);background:rgba(255,255,255,.05);transition:.2s;
}
.nav-search button:hover{color:#fff;background:rgba(76,107,255,.35);}
.nav-actions{display:flex;align-items:center;gap:16px;margin-left:auto;flex:0 0 auto;}
.nav-link-text{font-size:14px;color:var(--text-2);}
.nav-link-text:hover{color:var(--brand-2);}
.nav-tabs-wrap{
  border-top:1px solid rgba(140,170,255,.09);
  background:rgba(255,255,255,.015);
}
.nav-tabs{
  display:flex;align-items:center;gap:10px;
  padding:12px 0 16px;overflow-x:auto;
  scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
.nav-tabs::-webkit-scrollbar{display:none;}
.nav-tab{
  flex:0 0 auto;scroll-snap-align:start;
  position:relative;padding:9px 18px;border-radius:var(--radius-pill);
  font-size:14px;font-weight:600;color:var(--text-2);white-space:nowrap;
  border:1px solid transparent;transition:.22s ease;
}
.nav-tab:hover{color:var(--text-1);border-color:var(--line-strong);background:rgba(255,255,255,.035);}
.nav-tab.is-active{
  color:#fff;
  background:linear-gradient(120deg,var(--brand),var(--brand-3));
  box-shadow:0 10px 24px -12px rgba(76,107,255,.95), 0 0 0 1px rgba(122,91,255,.35);
}
.nav-tab.is-active::after{
  content:"";position:absolute;left:24%;right:24%;bottom:-11px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px 2px rgba(76,107,255,.85);
}

/* ============ 页头 Banner ============ */
.page-hero{
  position:relative;
  padding:76px 0 60px;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg, rgba(7,11,24,.55) 0%, rgba(7,11,24,.86) 62%, rgba(7,11,24,.98) 100%),
    url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  opacity:.9;z-index:-1;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13.5px;color:var(--text-3);margin-bottom:22px;
}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--brand-2);}
.breadcrumb span.sep{color:var(--text-3);opacity:.7;}
.breadcrumb .current{color:var(--text-1);font-weight:600;}
.page-hero h1{
  font-size:clamp(28px,4vw,44px);
  margin-bottom:18px;
  background:linear-gradient(120deg,#FFFFFF 30%, #B9C7FF 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.page-hero .lead{
  max-width:640px;font-size:16px;color:var(--text-2);margin-bottom:28px;
}
.anchor-pills{display:flex;flex-wrap:wrap;gap:10px;}
.anchor-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:var(--radius-pill);font-size:13.5px;font-weight:600;
  color:var(--text-2);border:1px solid var(--line);background:rgba(255,255,255,.03);
  transition:.22s ease;
}
.anchor-pill:hover{color:#fff;border-color:rgba(140,170,255,.55);background:rgba(76,107,255,.16);transform:translateY(-2px);}

/* ============ 概览数据条 ============ */
.fact-strip{padding:56px 0 0;}
.fact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.fact-item{padding:26px 24px;}
.fact-num{
  font-family:"Inter",var(--font-cn);
  font-variant-numeric:tabular-nums;
  font-size:clamp(28px,3.4vw,40px);
  font-weight:700;line-height:1.1;color:#fff;
  text-shadow:0 0 22px rgba(76,107,255,.55);
  margin-bottom:6px;
}
.fact-num small{font-size:16px;font-weight:600;color:var(--brand-2);margin-left:4px;text-shadow:0 0 16px rgba(43,224,192,.6);}
.fact-item p{margin:0;font-size:13.5px;color:var(--text-2);}
.fact-note{margin-top:18px;font-size:13px;color:var(--text-3);text-align:center;}

/* ============ 左右分栏主体 ============ */
.split-section{padding:88px 0 var(--sec-y);}
.side-index{position:sticky;top:150px;}
.index-card{padding:26px 24px;}
.index-card h3{font-size:16px;margin-bottom:16px;color:var(--text-1);}
.index-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;}
.index-list a{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px;border-radius:10px;font-size:14px;color:var(--text-2);
  transition:.2s ease;
}
.index-list a:hover{color:#fff;background:rgba(76,107,255,.14);transform:translateX(3px);}
.index-list a .idx{
  font-family:"Inter",sans-serif;font-variant-numeric:tabular-nums;
  font-size:12px;color:var(--brand-2);min-width:20px;
}
.index-tip{
  margin-top:20px;padding-top:18px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);line-height:1.7;
}
.index-tip a{color:var(--brand-2);}

.sec-block{margin-bottom:26px;padding:26px 28px;}
.sec-block:last-child{margin-bottom:0;}
.sec-block .grid-x{align-items:flex-start;}
.sec-media{
  border-radius:14px;overflow:hidden;aspect-ratio:16/10;
  background:linear-gradient(140deg,var(--brand),var(--brand-3));
  border:1px solid var(--line);
}
.sec-media img{width:100%;height:100%;object-fit:cover;opacity:.92;}
.sec-title{
  display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:10px;
}
.sec-title h3{font-size:19px;}
.sec-title .num{
  font-family:"Inter",sans-serif;font-variant-numeric:tabular-nums;
  font-size:13px;font-weight:700;color:var(--brand-2);letter-spacing:1px;
}
.sec-desc{font-size:15px;color:var(--text-2);margin-bottom:16px;}
.point-list{list-style:none;margin:0 0 16px;padding:0;display:flex;flex-direction:column;gap:9px;}
.point-list li{
  position:relative;padding-left:20px;font-size:14px;color:var(--text-2);line-height:1.65;
}
.point-list li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;
  background:var(--brand-2);box-shadow:0 0 10px rgba(43,224,192,.7);
}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{padding:6px 24px;transition:border-color .25s ease;}
.faq-item.is-open{border-color:rgba(140,170,255,.36);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;
  padding:18px 0;color:var(--text-1);font-size:16px;font-weight:600;
}
.faq-q .q-num{
  font-family:"Inter",sans-serif;font-variant-numeric:tabular-nums;
  font-size:13px;color:var(--brand-2);min-width:26px;
}
.faq-q .q-text{flex:1;padding-right:10px;}
.faq-q .q-icon{
  width:26px;height:26px;flex:0 0 26px;border-radius:50%;
  display:grid;place-items:center;position:relative;
  border:1px solid var(--line-strong);color:var(--brand-2);
  transition:transform .18s ease, background .2s ease;
}
.faq-q .q-icon::before,
.faq-q .q-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-q .q-icon::before{width:11px;height:1.6px;}
.faq-q .q-icon::after{width:1.6px;height:11px;transition:transform .18s ease;}
.faq-item.is-open .faq-q .q-icon{transform:rotate(180deg);background:rgba(76,107,255,.25);}
.faq-item.is-open .faq-q .q-icon::after{transform:scaleY(0);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .3s ease;
  border-top:1px solid transparent;
}
.faq-item.is-open .faq-a{border-top-color:var(--line);}
.faq-a-inner{padding:16px 0 20px 42px;font-size:14.5px;color:var(--text-2);line-height:1.8;}
.faq-a-inner a{color:var(--brand-2);}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;padding:64px 0;overflow:hidden;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-band::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:
    linear-gradient(100deg, rgba(9,14,32,.94) 12%, rgba(12,18,40,.82) 60%, rgba(43,224,192,.14) 100%),
    url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
}
.cta-band .inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band h2{font-size:clamp(21px,2.6vw,30px);margin-bottom:10px;}
.cta-band p{color:var(--text-2);margin:0;max-width:600px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;padding:70px 0 26px;background:rgba(6,9,20,.86);border-top:1px solid transparent;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(76,107,255,.7),rgba(43,224,192,.6),transparent);
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-col h3{font-size:15px;margin-bottom:16px;color:var(--text-1);}
.footer-col p{font-size:13.5px;color:var(--text-3);line-height:1.8;margin:0;max-width:280px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:13.5px;color:var(--text-2);transition:color .2s ease, transform .2s ease;}
.footer-links a:hover{color:var(--brand);transform:translateX(2px);}
.footer-contact{list-style:none;margin:0 0 18px;padding:0;display:flex;flex-direction:column;gap:11px;}
.footer-contact li{font-size:13.5px;color:var(--text-2);display:flex;align-items:center;gap:9px;}
.footer-contact i{color:var(--brand-2);font-size:13px;}
.footer-bottom{
  margin-top:26px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* ============ 悬浮按钮与弹层 ============ */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:200;
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 26px;border-radius:var(--radius-pill);
  color:#fff;font-size:15px;font-weight:600;
  background:linear-gradient(120deg,var(--brand),var(--brand-3));
  box-shadow:0 14px 34px -10px rgba(76,107,255,.75);
  transition:transform .22s ease, box-shadow .25s ease;
}
.float-cta:hover{transform:translateY(-3px);box-shadow:0 20px 44px -10px rgba(76,107,255,.9);}
.float-cta i{font-size:14px;}

.modal-mask{
  position:fixed;inset:0;z-index:300;display:none;
  align-items:center;justify-content:center;padding:24px;
  background:rgba(4,7,18,.62);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.modal-mask.is-open{display:flex;}
.modal-box{
  width:100%;max-width:520px;max-height:88vh;overflow-y:auto;
  padding:32px 30px;border-radius:22px;
  animation:modalIn .26s ease;
}
@keyframes modalIn{from{opacity:0;transform:translateY(16px) scale(.98);}to{opacity:1;transform:none;}}
.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:8px;}
.modal-head h2{font-size:21px;}
.modal-close{
  width:34px;height:34px;border-radius:50%;display:grid;place-items:center;
  color:var(--text-2);border:1px solid var(--line);background:rgba(255,255,255,.03);
  transition:.2s;flex:0 0 34px;
}
.modal-close:hover{color:#fff;border-color:var(--line-strong);background:rgba(76,107,255,.25);}
.modal-sub{font-size:13.5px;color:var(--text-3);margin-bottom:22px;}
form.lead-form .field{margin-bottom:16px;}
form.lead-form label{
  display:block;font-size:13.5px;color:var(--text-2);margin-bottom:8px;font-weight:600;
}
form.lead-form label .req{color:var(--warn);margin-left:4px;}
form.lead-form input[type="text"],
form.lead-form input[type="tel"],
form.lead-form input[type="email"],
form.lead-form textarea{
  width:100%;padding:12px 14px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  color:var(--text-1);font-size:14.5px;outline:none;
  transition:border-color .2s ease, box-shadow .2s ease;
}
form.lead-form textarea{min-height:96px;resize:vertical;}
form.lead-form input:focus,form.lead-form textarea:focus{
  border-color:var(--brand);box-shadow:0 0 0 3px rgba(76,107,255,.2);
}
form.lead-form input::placeholder,form.lead-form textarea::placeholder{color:var(--text-3);}
.agree-row{display:flex;align-items:flex-start;gap:10px;margin:6px 0 20px;}
.agree-row input{margin-top:4px;accent-color:var(--brand);}
.agree-row span{font-size:13px;color:var(--text-3);line-height:1.7;}
.agree-row a{color:var(--brand-2);}
.form-note{font-size:12.5px;color:var(--text-3);text-align:center;margin:14px 0 0;}
.form-success{
  display:none;margin-top:16px;padding:12px 14px;border-radius:var(--radius-sm);
  background:rgba(43,224,192,.1);border:1px solid rgba(43,224,192,.34);
  color:var(--brand-2);font-size:13.5px;
}
.form-success.is-show{display:block;}

/* ============ 响应式 ============ */
@media screen and (max-width:1279px){
  :root{--sec-y:84px;}
  .side-index{position:static;}
}
@media screen and (max-width:1023px){
  :root{--sec-y:72px;}
  .nav-search{max-width:260px;}
  .fact-grid{grid-template-columns:repeat(2,1fr);}
  .nav-top{flex-wrap:wrap;gap:16px;}
  .nav-search{order:3;max-width:100%;flex:1 1 100%;}
  .float-cta{right:14px;bottom:14px;padding:13px 22px;}
}
@media screen and (max-width:639px){
  :root{--sec-y:48px;}
  .grid-container{padding-left:16px;padding-right:16px;}
  .page-hero{padding:52px 0 44px;}
  .logo-text strong{font-size:15.5px;}
  .logo-text em{letter-spacing:2px;}
  .nav-actions{gap:12px;}
  .nav-link-text{display:none;}
  .fact-grid{grid-template-columns:1fr;}
  .fact-item{padding:22px 18px;}
  .sec-block{padding:22px 18px;}
  .faq-item{padding:4px 18px;}
  .faq-q{font-size:15px;gap:12px;}
  .faq-a-inner{padding:14px 0 18px 0;}
  .float-cta{
    right:0;left:0;bottom:0;justify-content:center;border-radius:0;
    padding:15px 20px;box-shadow:0 -10px 30px -12px rgba(76,107,255,.7);
  }
  .cta-band .inner{flex-direction:column;align-items:flex-start;}
  .footer-bottom{flex-direction:column;}
  .modal-box{padding:24px 20px;}
}