/* roulang page: index */
:root{
  --bg:#070C1A;
  --bg-alt:#0A0F1F;
  --panel:#0B1226;
  --glass:rgba(255,255,255,.06);
  --glass-2:rgba(255,255,255,.08);
  --line:rgba(255,255,255,.12);
  --line-soft:rgba(255,255,255,.08);
  --teal:#3DDCC8;
  --violet:#8B6CFF;
  --pink:#FF6FAE;
  --text:#E7EEF9;
  --text-dim:#9AA9C2;
  --text-soft:#C3CFE2;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --shadow-soft:0 10px 26px rgba(0,0,0,.35);
  --s1:8px; --s2:16px; --s3:24px; --s4:32px; --s5:48px; --s6:96px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .18s ease-out,background-color .18s ease-out,border-color .18s ease-out;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--teal);outline-offset:3px;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;padding:0;}
ul,ol{list-style:none;}
button{font-family:inherit;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.container-narrow{width:100%;max-width:840px;margin:0 auto;padding:0 24px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,12,26,.62);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.07);
  transition:background-color .25s ease-out,border-color .25s ease-out,box-shadow .25s ease-out;
}
.site-header.is-scrolled{
  background:rgba(7,12,26,.9);
  border-bottom:1px solid rgba(61,220,200,.24);
  box-shadow:0 10px 30px rgba(0,0,0,.42);
}
.header-inner{
  display:flex;align-items:center;gap:var(--s3);
  min-height:72px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;
  border-radius:12px;
  background:linear-gradient(135deg,rgba(61,220,200,.9),rgba(139,108,255,.85));
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 0 1px rgba(61,220,200,.35),0 8px 22px rgba(61,220,200,.25);
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:18px;font-weight:800;letter-spacing:-.01em;color:#F2F7FF;}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-dim);letter-spacing:.14em;}
.nav-chips{
  display:flex;align-items:center;gap:8px;
  flex:1 1 auto;min-width:0;
  overflow-x:auto;scrollbar-width:none;
  padding:4px 2px;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;align-items:center;
  height:36px;padding:0 16px;
  border-radius:999px;
  font-size:14px;white-space:nowrap;
  color:var(--text-soft);
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.1);
  transition:all .18s ease-out;
}
.chip:hover{color:#FFFFFF;background:rgba(255,255,255,.09);border-color:rgba(139,108,255,.45);}
.chip.is-active{
  color:#EAFBF8;
  background:rgba(61,220,200,.18);
  border-color:rgba(61,220,200,.6);
  box-shadow:0 0 12px rgba(61,220,200,.35);
}
.header-cta{flex:0 0 auto;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;
  border-radius:999px;
  font-size:15px;font-weight:700;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,border-color .18s ease-out,filter .18s ease-out;
}
.btn-primary{
  color:#04140F;
  background:linear-gradient(135deg,var(--teal),var(--violet));
  box-shadow:0 0 0 1px rgba(61,220,200,.5),0 10px 30px rgba(61,220,200,.28);
}
.btn-primary:hover{
  filter:brightness(1.08);
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(61,220,200,.6),0 14px 40px rgba(61,220,200,.4);
}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  color:var(--text);
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.22);
}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:rgba(61,220,200,.5);}
.btn-sm{padding:10px 20px;font-size:14px;}

/* ============ 通用板块 ============ */
.band{padding:var(--s6) 0;position:relative;}
.band-alt{background:var(--bg-alt);}
.band-panel{background:var(--panel);}
.band-head{max-width:760px;margin-bottom:var(--s5);}
.band-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.band-head h2{
  font-size:28px;font-weight:800;line-height:1.35;letter-spacing:-.01em;
  color:#F1F6FF;margin-bottom:14px;
}
.band-head p{color:var(--text-dim);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;color:var(--teal);
  margin-bottom:14px;text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--teal),transparent);}
.glass{
  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);
  box-shadow:var(--shadow);
  position:relative;
  overflow:hidden;
}
.glass::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.5),transparent);
  pointer-events:none;
}
.tag{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:999px;
  font-size:12px;line-height:1.6;
  color:#CFE9FF;
  background:rgba(139,108,255,.16);
  border:1px solid rgba(139,108,255,.32);
}
.tag-teal{color:#BFF6EE;background:rgba(61,220,200,.14);border-color:rgba(61,220,200,.36);}
.tag-pink{color:#FFD8E8;background:rgba(255,111,174,.14);border-color:rgba(255,111,174,.34);}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:88px 0 96px;
  background-image:linear-gradient(180deg,rgba(7,12,26,.82),rgba(7,12,26,.94)),url('/assets/images/backpic/back-1.jpg');
  background-size:cover;background-position:center;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:14px 14px;
  opacity:.9;pointer-events:none;
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;}
.hero h1{
  font-size:40px;font-weight:800;line-height:1.28;letter-spacing:-.01em;
  color:#F4F9FF;margin-bottom:18px;
}
.hero h1 span{
  background:linear-gradient(120deg,var(--teal),var(--violet) 70%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:17px;color:#C6D3E6;margin-bottom:16px;}
.hero-copy{font-size:15px;color:var(--text-dim);max-width:600px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:22px;}
.hero-meta div{font-size:13px;color:var(--text-dim);}
.hero-meta b{display:block;font-size:22px;font-weight:800;color:var(--teal);line-height:1.3;}
.hero-stack{position:relative;height:420px;}
.stack-card{
  position:absolute;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);
  background:var(--panel);
}
.stack-card img{width:100%;height:100%;object-fit:cover;}
.stack-card figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:20px 16px 12px;font-size:13px;color:#EAF2FF;
  background:linear-gradient(180deg,transparent,rgba(7,12,26,.92));
}
.stack-main{width:62%;height:78%;top:0;right:6%;animation:floaty 7s ease-in-out infinite;}
.stack-sub1{width:44%;height:44%;left:0;bottom:6%;border-color:rgba(61,220,200,.35);animation:floaty 9s ease-in-out infinite .6s;}
.stack-sub2{width:38%;height:36%;right:0;bottom:0;border-color:rgba(139,108,255,.35);animation:floaty 8s ease-in-out infinite 1.2s;}
@keyframes floaty{0%,100%{transform:translateY(0);}50%{transform:translateY(-8px);}}

/* ============ 痛点 ============ */
.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.pain-item{
  padding:22px;border-radius:var(--radius);
  background:var(--glass);border:1px solid var(--line);
  transition:border-color .18s ease-out,transform .18s ease-out;
}
.pain-item:hover{border-color:rgba(61,220,200,.4);transform:translateY(-3px);}
.pain-item h3{font-size:16px;font-weight:700;color:#EEF5FF;margin-bottom:10px;display:flex;gap:10px;align-items:flex-start;}
.pain-item h3 i{
  flex:0 0 22px;width:22px;height:22px;border-radius:8px;
  background:rgba(255,111,174,.16);border:1px solid rgba(255,111,174,.4);
  display:inline-flex;align-items:center;justify-content:center;
  font-style:normal;font-size:12px;color:var(--pink);margin-top:4px;
}
.pain-item p{font-size:14px;color:var(--text-dim);padding-left:32px;}

/* ============ 解决方案 ============ */
.solution{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.solution-text h2{font-size:28px;font-weight:800;line-height:1.35;color:#F1F6FF;margin-bottom:18px;}
.solution-text p{color:var(--text-dim);font-size:15px;margin-bottom:16px;}
.solution-list{display:flex;flex-direction:column;gap:12px;margin-top:8px;}
.solution-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text-soft);}
.solution-list li::before{content:"";flex:0 0 8px;width:8px;height:8px;margin-top:11px;border-radius:50%;background:var(--teal);box-shadow:0 0 10px rgba(61,220,200,.7);}
.solution-media{position:relative;}
.solution-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius);border:1px solid var(--line);background:var(--panel);}
.data-chip{
  position:absolute;left:-20px;bottom:-24px;
  padding:18px 22px;border-radius:var(--radius);
  background:rgba(11,18,38,.86);border:1px solid rgba(61,220,200,.4);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow);
}
.data-chip b{display:block;font-size:26px;font-weight:800;color:var(--teal);line-height:1.2;}
.data-chip span{font-size:13px;color:var(--text-dim);}

/* ============ 步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative;}
.steps::before{
  content:"";position:absolute;top:26px;left:6%;right:6%;height:1px;
  background:linear-gradient(90deg,rgba(61,220,200,.55),rgba(139,108,255,.45));
  opacity:.6;
}
.step{position:relative;padding:0 6px;}
.step-num{
  width:52px;height:52px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:800;color:#04140F;
  background:linear-gradient(135deg,var(--teal),var(--violet));
  box-shadow:0 0 0 1px rgba(61,220,200,.4),0 10px 26px rgba(61,220,200,.25);
  position:relative;z-index:2;margin-bottom:18px;
}
.step h3{font-size:17px;font-weight:700;color:#EEF5FF;margin-bottom:10px;}
.step p{font-size:14px;color:var(--text-dim);}

/* ============ 横滚卡带 ============ */
.rail-wrap{position:relative;}
.rail{display:flex;gap:20px;overflow-x:auto;padding:6px 4px 20px;scroll-snap-type:x mandatory;scrollbar-width:none;}
.rail::-webkit-scrollbar{display:none;}
.rail-card{
  flex:0 0 280px;scroll-snap-align:start;
  border-radius:var(--radius);
  background:var(--glass);border:1px solid var(--line);
  overflow:hidden;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.rail-card:hover{transform:translateY(-6px);border-color:rgba(61,220,200,.45);box-shadow:0 18px 40px rgba(0,0,0,.5);}
.rail-card img{width:100%;aspect-ratio:3/4;object-fit:cover;background:var(--panel);}
.rail-body{padding:18px 20px 22px;}
.rail-body h3{font-size:17px;font-weight:700;color:#EEF5FF;margin-bottom:8px;}
.rail-body p{font-size:13px;color:var(--text-dim);}

/* ============ 数据条 ============ */
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--glass);}
.stat-cell{padding:34px 24px;text-align:center;border-right:1px solid var(--line-soft);}
.stat-cell:last-child{border-right:0;}
.stat-cell b{display:block;font-size:40px;font-weight:800;color:var(--teal);line-height:1.15;letter-spacing:-.02em;}
.stat-cell span{font-size:14px;color:var(--text-dim);}

/* ============ 证言 ============ */
.voice-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-items:start;}
.voice{
  padding:24px;border-radius:var(--radius);
  background:var(--glass);border:1px solid var(--line);
  position:relative;
  transition:border-color .18s ease-out,transform .18s ease-out;
}
.voice:nth-child(2){margin-top:26px;}
.voice:nth-child(4){margin-top:26px;}
.voice:hover{border-color:rgba(139,108,255,.45);transform:translateY(-3px);}
.voice::after{
  content:"";position:absolute;left:26px;bottom:-9px;width:16px;height:16px;
  background:rgba(255,255,255,.06);border-right:1px solid var(--line);border-bottom:1px solid var(--line);
  transform:rotate(45deg);
}
.voice p{font-size:15px;color:var(--text-soft);margin-bottom:18px;}
.voice-who{display:flex;align-items:center;gap:12px;}
.avatar{
  width:38px;height:38px;border-radius:50%;
  background:linear-gradient(135deg,rgba(61,220,200,.7),rgba(139,108,255,.7));
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;color:#04140F;
}
.voice-who b{display:block;font-size:14px;color:#EEF5FF;}
.voice-who span{font-size:12px;color:var(--text-dim);}

/* ============ 适用人群 ============ */
.reader-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.reader{
  padding:22px 24px;border-radius:var(--radius);
  background:rgba(255,255,255,.045);border:1px solid var(--line);
  transition:background-color .18s ease-out,border-color .18s ease-out;
}
.reader:hover{background:rgba(61,220,200,.08);border-color:rgba(61,220,200,.4);}
.reader h3{font-size:17px;font-weight:700;color:#EEF5FF;margin-bottom:8px;}
.reader p{font-size:14px;color:var(--text-dim);}

/* ============ 更新日历 ============ */
.calendar{border-radius:var(--radius);border:1px solid var(--line);overflow:hidden;background:var(--glass);}
.cal-row{display:grid;grid-template-columns:110px 1fr 150px;gap:16px;align-items:center;padding:18px 26px;border-bottom:1px solid var(--line-soft);transition:background-color .18s ease-out;}
.cal-row:last-child{border-bottom:0;}
.cal-row:hover{background:rgba(255,255,255,.05);}
.cal-day{font-size:14px;color:var(--text-dim);display:flex;align-items:center;gap:10px;}
.dot{width:8px;height:8px;border-radius:50%;background:var(--pink);box-shadow:0 0 10px rgba(255,111,174,.8);}
.dot-off{background:rgba(255,255,255,.28);box-shadow:none;}
.cal-title{font-size:15px;color:#E9F1FF;font-weight:600;}
.cal-state{font-size:13px;color:var(--text-dim);text-align:right;}

/* ============ 榜单 ============ */
.rank-list{border-radius:var(--radius);border:1px solid var(--line);overflow:hidden;}
.rank-row{
  display:grid;grid-template-columns:74px 1fr 130px auto;gap:16px;align-items:center;
  min-height:68px;padding:10px 26px;
  border-bottom:1px solid var(--line-soft);
  background:rgba(255,255,255,.02);
  transition:background-color .18s ease-out;
}
.rank-row:nth-child(odd){background:rgba(255,255,255,.05);}
.rank-row:last-child{border-bottom:0;}
.rank-row:hover{background:rgba(61,220,200,.1);}
.rank-num{font-size:24px;font-weight:800;color:var(--teal);letter-spacing:-.02em;}
.rank-title{font-size:16px;font-weight:600;color:#EDF4FF;}
.rank-note{font-size:13px;color:var(--text-dim);text-align:right;}

/* ============ 精选 + 分类入口 ============ */
.feature-layout{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start;}
.feature-main{padding:26px;border-radius:var(--radius);background:var(--glass);border:1px solid var(--line);}
.feature-main img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-sm);background:var(--panel);margin-bottom:20px;}
.feature-main h3{font-size:20px;font-weight:700;color:#F0F6FF;margin-bottom:12px;}
.feature-main p{font-size:15px;color:var(--text-dim);}
.feature-side{display:flex;flex-direction:column;gap:20px;}
.feature-item{padding:20px 22px;border-radius:var(--radius);background:rgba(255,255,255,.045);border:1px solid var(--line);transition:border-color .18s ease-out,transform .18s ease-out;}
.feature-item:hover{border-color:rgba(61,220,200,.4);transform:translateY(-3px);}
.feature-item h3{font-size:17px;font-weight:700;color:#EEF5FF;margin:8px 0 8px;}
.feature-item p{font-size:14px;color:var(--text-dim);}
.channel-box{padding:30px;border-radius:var(--radius);background:var(--glass);border:1px solid var(--line);}
.channel-chips{display:flex;flex-wrap:wrap;gap:12px;}
.channel-chips .chip{height:40px;padding:0 20px;font-size:15px;}
.channel-chips .chip:hover{background:rgba(61,220,200,.14);border-color:rgba(61,220,200,.5);color:#fff;}

/* ============ 画风图谱 ============ */
.style-cloud{display:flex;flex-wrap:wrap;gap:12px;}
.style-tag{
  padding:10px 18px;border-radius:999px;font-size:14px;
  color:var(--text-soft);background:rgba(255,255,255,.04);
  border:1px dashed rgba(255,255,255,.18);
  transition:all .18s ease-out;
}
.style-tag:hover{color:#FFFFFF;background:rgba(139,108,255,.18);border-color:rgba(139,108,255,.55);border-style:solid;box-shadow:0 0 18px rgba(139,108,255,.25);}

/* ============ 资讯非对称栅格 ============ */
.news-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;}
.news-col{display:flex;flex-direction:column;gap:24px;}
.news-card{
  border-radius:var(--radius);overflow:hidden;
  background:var(--glass);border:1px solid var(--line);
  transition:transform .2s ease-out,border-color .2s ease-out;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(61,220,200,.4);}
.news-card img{width:100%;object-fit:cover;background:var(--panel);}
.news-card.big img{aspect-ratio:16/9;}
.news-card.small{display:grid;grid-template-columns:130px 1fr;}
.news-card.small img{height:100%;min-height:130px;}
.news-body{padding:20px 22px;}
.news-body h3{font-size:18px;font-weight:700;color:#EEF5FF;margin:10px 0;line-height:1.5;}
.news-card.small .news-body h3{font-size:16px;}
.news-body p{font-size:14px;color:var(--text-dim);}

/* ============ 进度指标 ============ */
.metric-panel{padding:32px;border-radius:var(--radius);background:var(--glass);border:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:28px 48px;}
.metric-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:10px;}
.metric-head span{font-size:14px;color:var(--text-soft);}
.metric-head b{font-size:15px;font-weight:700;color:var(--teal);}
.bar{height:6px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden;}
.bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--teal),var(--violet));box-shadow:0 0 14px rgba(61,220,200,.5);}

/* ============ FAQ ============ */
.accordion{border:0;background:transparent;}
.accordion .accordion-item{border:1px solid var(--line);border-radius:var(--radius);background:rgba(255,255,255,.04);margin-bottom:14px;overflow:hidden;transition:border-color .2s ease-out;}
.accordion .accordion-item.is-active{border-color:rgba(61,220,200,.5);background:rgba(61,220,200,.05);}
.accordion .accordion-title{
  border:0;padding:20px 56px 20px 46px;position:relative;
  font-size:16px;font-weight:600;color:#EDF4FF;line-height:1.6;background:transparent;
}
.accordion .accordion-title::before{
  content:"";position:absolute;left:22px;top:29px;
  width:10px;height:10px;border-radius:50%;
  background:var(--teal);box-shadow:0 0 12px rgba(61,220,200,.9);
}
.accordion .accordion-title::after{
  content:"+";position:absolute;right:24px;top:50%;transform:translateY(-50%);
  font-size:18px;color:var(--text-dim);font-weight:400;
}
.accordion .accordion-item.is-active .accordion-title::after{content:"−";color:var(--teal);}
.accordion .accordion-content{
  border:0;background:transparent;padding:0 46px 22px;
  font-size:15px;color:var(--text-dim);line-height:1.8;
  animation:fadein .25s ease-out;
}
@keyframes fadein{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:none;}}

/* ============ 结尾 CTA ============ */
.cta-band{
  position:relative;padding:64px 48px;border-radius:24px;text-align:center;
  background-image:linear-gradient(135deg,rgba(7,12,26,.9),rgba(11,18,38,.86)),url('/assets/images/backpic/back-4.jpg');
  background-size:cover;background-position:center;
  border:1px solid rgba(61,220,200,.32);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.cta-band::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);background-size:16px 16px;opacity:.8;}
.cta-band h2{position:relative;z-index:2;font-size:28px;font-weight:800;color:#F4F9FF;margin-bottom:16px;}
.cta-band p{position:relative;z-index:2;color:var(--text-dim);font-size:16px;max-width:620px;margin:0 auto 28px;}
.cta-band .btn{position:relative;z-index:2;}

/* ============ 页脚 ============ */
.site-footer{
  background:#050912;
  border-top:1px solid rgba(61,220,200,.22);
  padding:64px 0 28px;
  margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:48px;margin-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand strong{font-size:17px;font-weight:800;color:#F2F7FF;}
.footer-col h3{font-size:15px;font-weight:700;color:#EEF5FF;margin-bottom:18px;}
.footer-col p{font-size:14px;color:var(--text-dim);}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14px;color:var(--text-dim);}
.footer-links a:hover{color:var(--teal);}
.subscribe{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap;}
.subscribe input{
  flex:1 1 180px;min-width:0;
  height:46px;padding:0 16px;border-radius:12px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  color:var(--text);font-size:14px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.subscribe input::placeholder{color:#6F7F99;}
.subscribe input:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 4px rgba(61,220,200,.18);}
.subscribe .btn{padding:0 22px;height:46px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:22px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#6F7F99;
}

/* ============ 响应式 ============ */
@media screen and (max-width:1024px){
  .band{padding:72px 0;}
  .hero{padding:64px 0 72px;}
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero h1{font-size:32px;}
  .hero-stack{height:360px;}
  .band-head h2,.solution-text h2,.cta-band h2{font-size:24px;}
  .pain-grid,.reader-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .steps::before{display:none;}
  .stat-row{grid-template-columns:repeat(2,1fr);}
  .stat-cell:nth-child(2){border-right:0;}
  .stat-cell{border-bottom:1px solid var(--line-soft);}
  .voice-grid{grid-template-columns:repeat(2,1fr);}
  .voice:nth-child(2),.voice:nth-child(4){margin-top:0;}
  .solution{grid-template-columns:1fr;gap:56px;}
  .data-chip{left:16px;bottom:-20px;}
  .feature-layout{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .metric-panel{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .accordion .accordion-title{font-size:15px;}
}
@media screen and (max-width:640px){
  .container,.container-narrow{padding:0 16px;}
  .band{padding:56px 0;}
  .header-inner{min-height:64px;gap:12px;}
  .brand-text em{display:none;}
  .brand-text strong{font-size:16px;}
  .nav-chips{order:3;width:100%;flex:1 0 100%;padding:0 0 10px;}
  .header-inner{flex-wrap:wrap;padding-top:10px;}
  .nav-chips .chip{height:32px;padding:0 14px;font-size:13px;}
  .hero{padding:48px 0 56px;}
  .hero h1{font-size:26px;}
  .hero-sub{font-size:16px;}
  .hero-stack{height:300px;}
  .stack-main{width:70%;height:74%;}
  .band-head h2,.solution-text h2,.cta-band h2{font-size:22px;}
  .pain-grid,.reader-grid,.steps,.stat-row,.voice-grid{grid-template-columns:1fr;}
  .stat-cell{border-right:0;}
  .cal-row{grid-template-columns:1fr;gap:6px;padding:16px 18px;}
  .cal-state{text-align:left;}
  .rank-row{grid-template-columns:52px 1fr;gap:12px;padding:14px 18px;min-height:0;}
  .rank-note{grid-column:2;text-align:left;}
  .rank-title{font-size:15px;}
  .news-card.small{grid-template-columns:1fr;}
  .news-card.small img{min-height:180px;}
  .cta-band{padding:40px 22px;border-radius:18px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .metric-panel{padding:22px;}
  .accordion .accordion-title{padding:16px 44px 16px 40px;}
  .accordion .accordion-title::before{left:18px;top:25px;}
  .accordion .accordion-content{padding:0 20px 18px 40px;}
  .rail-card{flex:0 0 240px;}
}

/* roulang page: category1 */
:root{
 --bg:#070C1A;
 --bg-alt:#0A0F1F;
 --panel:#0B1226;
 --glass:rgba(255,255,255,.06);
 --glass-2:rgba(255,255,255,.08);
 --line:rgba(255,255,255,.12);
 --line-soft:rgba(255,255,255,.08);
 --teal:#3DDCC8;
 --violet:#8B6CFF;
 --pink:#FF6FAE;
 --text:#E7EEF9;
 --text-dim:#9AA9C2;
 --text-soft:#C3CFE2;
 --radius:16px;
 --radius-sm:12px;
 --shadow:0 18px 40px rgba(0,0,0,.45);
 --shadow-soft:0 10px 26px rgba(0,0,0,.35);
 --s1:8px; --s2:16px; --s3:24px; --s4:32px; --s5:48px; --s6:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
 margin:0;
 background:var(--bg);
 color:var(--text);
 font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
 font-size:16px;
 line-height:1.8;
 letter-spacing:0;
 overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .18s ease-out,background-color .18s ease-out,border-color .18s ease-out,opacity .18s ease-out;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--teal);outline-offset:3px;}
button{font-family:inherit;}
h1,h2,h3{letter-spacing:-.01em;margin:0;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.container-narrow{width:100%;max-width:820px;margin:0 auto;padding:0 24px;}

/* ============ 顶部导航 ============ */
.site-header{
 position:sticky;top:0;z-index:60;
 background:rgba(7,12,26,.62);
 backdrop-filter:blur(14px) saturate(140%);
 -webkit-backdrop-filter:blur(14px) saturate(140%);
 border-bottom:1px solid rgba(255,255,255,.07);
 transition:background-color .25s ease-out,border-color .25s ease-out,box-shadow .25s ease-out;
}
.site-header.is-scrolled{
 background:rgba(7,12,26,.9);
 border-bottom:1px solid rgba(61,220,200,.24);
 box-shadow:0 10px 30px rgba(0,0,0,.42);
}
.header-inner{display:flex;align-items:center;gap:var(--s3);min-height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
 width:36px;height:36px;flex:0 0 36px;border-radius:12px;
 background:linear-gradient(135deg,rgba(61,220,200,.9),rgba(139,108,255,.85));
 display:flex;align-items:center;justify-content:center;
 box-shadow:0 0 0 1px rgba(61,220,200,.35),0 8px 22px rgba(61,220,200,.25);
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:18px;font-weight:800;color:#F2F7FF;}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-dim);letter-spacing:.14em;}
.nav-chips{
 display:flex;align-items:center;gap:8px;flex:1 1 auto;min-width:0;
 overflow-x:auto;scrollbar-width:none;padding:4px 2px;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
 display:inline-flex;align-items:center;height:36px;padding:0 16px;
 border-radius:999px;font-size:14px;white-space:nowrap;
 color:var(--text-soft);
 background:rgba(255,255,255,.05);
 border:1px solid rgba(255,255,255,.1);
 transition:all .18s ease-out;
}
.chip:hover{color:#FFFFFF;background:rgba(255,255,255,.09);border-color:rgba(139,108,255,.45);}
.chip.is-active{
 color:#EAFBF8;
 background:rgba(61,220,200,.18);
 border-color:rgba(61,220,200,.6);
 box-shadow:0 0 12px rgba(61,220,200,.35);
}
.header-cta{flex:0 0 auto;}

/* ============ 按钮 ============ */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:14px 28px;border-radius:999px;font-size:15px;font-weight:700;
 border:1px solid transparent;cursor:pointer;
 transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,border-color .18s ease-out,filter .18s ease-out;
}
.btn-primary{
 color:#04140F;
 background:linear-gradient(135deg,var(--teal),var(--violet));
 box-shadow:0 0 0 1px rgba(61,220,200,.5),0 10px 30px rgba(61,220,200,.28);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(61,220,200,.6),0 14px 40px rgba(61,220,200,.4);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{color:var(--text);background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.22);}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:rgba(61,220,200,.5);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:10px 20px;font-size:14px;}

/* ============ 通用标签 ============ */
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;
 font-size:12px;letter-spacing:.16em;color:var(--teal);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--teal),transparent);}
.tag{
 display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;
 font-size:12px;line-height:1.6;color:#CFE9FF;
 background:rgba(139,108,255,.16);border:1px solid rgba(139,108,255,.32);
}
.tag-teal{color:#BFF6EE;background:rgba(61,220,200,.14);border-color:rgba(61,220,200,.36);}
.tag-pink{color:#FFD8E8;background:rgba(255,111,174,.14);border-color:rgba(255,111,174,.34);}
.glass{
 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);
 box-shadow:var(--shadow);
}
.section{padding:96px 0;position:relative;}
.section-alt{background:var(--bg-alt);}
.section-panel{background:var(--panel);}
.section-head{margin-bottom:var(--s5);max-width:760px;}
.section-head h2{font-size:28px;font-weight:800;color:#F2F7FF;line-height:1.4;margin-bottom:10px;}
.section-head p{font-size:15px;color:var(--text-dim);}

/* ============ 分类头 ============ */
.cat-head{
 position:relative;
 padding:56px 0 48px;
 background-image:linear-gradient(180deg,rgba(10,15,31,.88),rgba(7,12,26,.97)),url('/assets/images/backpic/back-2.jpg');
 background-size:cover;background-position:center;
 border-bottom:1px solid var(--line-soft);
 overflow:hidden;
}
.cat-head::after{
 content:"";position:absolute;inset:0;
 background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);
 background-size:14px 14px;pointer-events:none;
}
.cat-head .container{position:relative;z-index:2;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-dim);margin-bottom:18px;}
.breadcrumb a{color:var(--text-soft);}
.breadcrumb a:hover{color:var(--teal);}
.breadcrumb span.sep{color:rgba(255,255,255,.28);}
.cat-head-grid{display:grid;grid-template-columns:1.4fr .9fr;gap:40px;align-items:end;}
.cat-head h1{font-size:34px;font-weight:800;line-height:1.34;color:#F4F9FF;margin-bottom:14px;}
.cat-head h1 em{
 font-style:normal;
 background:linear-gradient(120deg,var(--teal),var(--violet) 72%);
 -webkit-background-clip:text;background-clip:text;color:transparent;
}
.cat-desc{font-size:15px;color:var(--text-soft);max-width:640px;margin-bottom:18px;}
.cat-facts{display:flex;flex-wrap:wrap;gap:10px;}
.cat-aside{align-self:stretch;}
.filter-card{padding:20px 22px;}
.filter-card h2{font-size:16px;font-weight:700;color:#EFF6FF;margin-bottom:14px;}
.filter-row{display:flex;flex-wrap:wrap;gap:8px;}
.filter-chip{
 display:inline-flex;align-items:center;height:34px;padding:0 15px;
 border-radius:999px;font-size:13px;cursor:pointer;
 color:var(--text-soft);background:rgba(255,255,255,.05);
 border:1px solid rgba(255,255,255,.1);
 transition:all .18s ease-out;
}
.filter-chip:hover{color:#fff;border-color:rgba(139,108,255,.45);background:rgba(255,255,255,.09);}
.filter-chip.is-active{
 color:#EAFBF8;background:rgba(61,220,200,.18);
 border-color:rgba(61,220,200,.6);
 box-shadow:0 0 12px rgba(61,220,200,.3);
}
.filter-note{font-size:12px;color:var(--text-dim);margin-top:14px;}

/* ============ 作品网格 ============ */
.work-grid{margin-top:-6px;}
.work-card{
 overflow:hidden;border-radius:var(--radius);
 display:flex;flex-direction:column;height:100%;
 transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.work-card:hover{transform:translateY(-4px);border-color:rgba(61,220,200,.4);box-shadow:0 22px 46px rgba(0,0,0,.5);}
.work-cover{
 position:relative;margin:0;aspect-ratio:3/4;
 background:#0B1226;border-radius:var(--radius-sm);overflow:hidden;
}
.work-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out;}
.work-card:hover .work-cover img{transform:scale(1.03);}
.work-cover::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(180deg,rgba(6,10,22,0) 45%,rgba(6,10,22,.72) 100%);
}
.work-status{
 position:absolute;left:12px;top:12px;z-index:2;
 padding:3px 10px;border-radius:999px;font-size:12px;
 color:#04140F;background:rgba(61,220,200,.92);font-weight:700;
}
.work-status.done{color:#2A0F1D;background:rgba(255,111,174,.88);}
.work-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.work-body h3{font-size:18px;font-weight:700;color:#F2F7FF;line-height:1.5;}
.work-body p{font-size:14px;color:var(--text-dim);line-height:1.8;}
.work-tags{display:flex;flex-wrap:wrap;gap:6px;}
.work-foot{
 margin-top:auto;padding-top:12px;border-top:1px dashed rgba(255,255,255,.12);
 font-size:13px;color:var(--text-soft);display:flex;justify-content:space-between;gap:10px;
}
.grid-gap{margin-bottom:24px;}
.more-row{display:flex;justify-content:center;margin-top:var(--s5);}

/* ============ 精选导读 ============ */
.hl-item{
 display:grid;grid-template-columns:240px 1fr;gap:24px;
 padding:22px;margin-bottom:20px;align-items:center;
 transition:border-color .18s ease-out,transform .18s ease-out;
}
.hl-item:hover{border-color:rgba(61,220,200,.4);transform:translateY(-3px);}
.hl-cover{aspect-ratio:16/10;background:#0B1226;border-radius:var(--radius-sm);overflow:hidden;margin:0;}
.hl-cover img{width:100%;height:100%;object-fit:cover;}
.hl-body h3{font-size:19px;font-weight:700;color:#F2F7FF;margin-bottom:10px;line-height:1.5;}
.hl-body p{font-size:14px;color:var(--text-dim);margin-bottom:12px;}
.hl-body .hl-tags{display:flex;flex-wrap:wrap;gap:6px;}

/* ============ 步骤流程 ============ */
.step-flow{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step-flow::before{
 content:"";position:absolute;left:0;right:0;top:26px;height:1px;
 background:linear-gradient(90deg,rgba(61,220,200,.6),rgba(139,108,255,.5),rgba(61,220,200,.15));
}
.step-item{position:relative;padding-top:64px;}
.step-num{
 position:absolute;top:0;left:0;width:52px;height:52px;border-radius:50%;
 display:flex;align-items:center;justify-content:center;
 font-size:16px;font-weight:800;color:#04140F;
 background:linear-gradient(135deg,var(--teal),var(--violet));
 box-shadow:0 0 0 1px rgba(61,220,200,.5),0 0 20px rgba(61,220,200,.32);
}
.step-item h3{font-size:17px;font-weight:700;color:#F2F7FF;margin-bottom:8px;}
.step-item p{font-size:14px;color:var(--text-dim);}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
 border:1px solid var(--line);border-radius:var(--radius);
 background:var(--glass);overflow:hidden;
 transition:border-color .2s ease-out,background-color .2s ease-out;
}
.faq-item[open]{border-color:rgba(61,220,200,.5);background:rgba(255,255,255,.07);}
.faq-item summary{
 display:flex;align-items:center;gap:12px;
 padding:20px 24px;cursor:pointer;list-style:none;
 font-size:16px;font-weight:600;color:#EFF6FF;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::marker{content:"";}
.faq-dot{
 width:8px;height:8px;flex:0 0 8px;border-radius:50%;
 background:var(--teal);box-shadow:0 0 10px rgba(61,220,200,.75);
}
.faq-item summary:hover{color:#fff;}
.faq-answer{padding:0 24px 22px 44px;font-size:14px;color:var(--text-dim);animation:faqIn .22s ease-out;}
@keyframes faqIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:translateY(0);}}

/* ============ 数据速览 ============ */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.stat-card{padding:24px;text-align:left;}
.stat-card b{display:block;font-size:34px;font-weight:800;color:var(--teal);line-height:1.2;letter-spacing:-.02em;}
.stat-card span{display:block;font-size:15px;color:#EFF6FF;font-weight:600;margin-top:6px;}
.stat-card em{display:block;font-style:normal;font-size:13px;color:var(--text-dim);margin-top:4px;}

/* ============ 文章卡 ============ */
.article-card{
 overflow:hidden;border-radius:var(--radius);height:100%;
 display:flex;flex-direction:column;
 transition:transform .18s ease-out,border-color .18s ease-out;
}
.article-card:hover{transform:translateY(-4px);border-color:rgba(139,108,255,.45);}
.article-cover{margin:0;aspect-ratio:16/10;background:#0B1226;overflow:hidden;border-radius:var(--radius-sm) var(--radius-sm) 0 0;}
.article-cover img{width:100%;height:100%;object-fit:cover;}
.article-body{padding:20px 22px 22px;}
.article-body h3{font-size:17px;font-weight:700;color:#F2F7FF;line-height:1.55;margin-bottom:10px;}
.article-body p{font-size:14px;color:var(--text-dim);margin-bottom:12px;}

/* ============ 结尾 CTA ============ */
.cta-band{
 position:relative;overflow:hidden;
 padding:56px 48px;border-radius:var(--radius);
 background-image:linear-gradient(120deg,rgba(61,220,200,.16),rgba(139,108,255,.18)),url('/assets/images/backpic/back-4.jpg');
 background-size:cover;background-position:center;
 border:1px solid rgba(61,220,200,.32);
 box-shadow:var(--shadow);
 display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band::after{
 content:"";position:absolute;inset:0;
 background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);
 background-size:14px 14px;pointer-events:none;
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{font-size:26px;font-weight:800;color:#F7FBFF;margin-bottom:8px;}
.cta-band p{font-size:15px;color:var(--text-soft);max-width:600px;}

/* ============ 页脚 ============ */
.site-footer{
 background:#050912;
 border-top:1px solid rgba(61,220,200,.28);
 padding:64px 0 24px;
 margin-top:96px;
}
.footer-grid{display:grid;grid-template-columns:1.3fr .8fr 1fr;gap:40px;padding-bottom:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand strong{font-size:18px;font-weight:800;color:#F2F7FF;}
.footer-col p{font-size:14px;color:var(--text-dim);line-height:1.9;}
.footer-col h3{font-size:15px;font-weight:700;color:#EFF6FF;margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--text-dim);}
.footer-links a:hover{color:var(--teal);}
.subscribe{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap;}
.subscribe input{
 flex:1 1 180px;min-width:0;
 padding:12px 16px;border-radius:999px;font-size:14px;
 color:var(--text);background:rgba(255,255,255,.05);
 border:1px solid rgba(255,255,255,.14);
 transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.subscribe input::placeholder{color:#7F8CA6;}
.subscribe input:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 4px rgba(61,220,200,.18);}
.subscribe button{padding:12px 22px;font-size:14px;}
.footer-bottom{
 display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
 padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
 font-size:13px;color:#7F8CA6;
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
 .section{padding:72px 0;}
 .cat-head-grid{grid-template-columns:1fr;gap:28px;align-items:start;}
 .cat-head h1{font-size:30px;}
 .step-flow{grid-template-columns:repeat(2,1fr);row-gap:32px;}
 .step-flow::before{display:none;}
 .stat-grid{grid-template-columns:repeat(2,1fr);}
 .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
 .hl-item{grid-template-columns:200px 1fr;}
 .cta-band{padding:44px 32px;}
}
@media (max-width:640px){
 .container{padding:0 16px;}
 .header-inner{gap:12px;min-height:64px;}
 .brand-text em{display:none;}
 .header-cta{padding:8px 14px;font-size:13px;}
 .section{padding:56px 0;}
 .cat-head{padding:40px 0 36px;}
 .cat-head h1{font-size:26px;}
 .section-head h2{font-size:22px;}
 .hl-item{grid-template-columns:1fr;gap:16px;}
 .step-flow{grid-template-columns:1fr;}
 .stat-grid{grid-template-columns:1fr;}
 .footer-grid{grid-template-columns:1fr;}
 .cta-band{padding:32px 22px;flex-direction:column;align-items:flex-start;}
 .cta-band h2{font-size:22px;}
 .faq-item summary{padding:16px 18px;font-size:15px;}
 .faq-answer{padding:0 18px 18px 38px;}
}