/* roulang page: index */
:root{
  --blue:#2F6DE0; --blue-dark:#1F55BE; --blue-soft:#EEF4FF;
  --teal:#16C2A3; --amber:#FFB13D;
  --bg:#F7F9FC; --card:#FFFFFF; --line:#E4EAF2;
  --text:#1B2430; --muted:#5A6B7D;
  --r-card:18px; --r-btn:12px; --r-img:20px;
  --shadow:0 6px 20px rgba(31,60,110,.08);
  --shadow-h:0 12px 28px rgba(31,60,110,.14);
  --sidebar:240px;
  --gutter:11px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;padding:0;background:var(--bg);color:var(--text);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.75;letter-spacing:.01em;
}
img{max-width:100%;display:block;border:0}
a{color:var(--blue);text-decoration:none;transition:color .16s ease,background-color .16s ease,border-color .16s ease}
a:hover{color:var(--blue-dark)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button,input,select{font-family:inherit;font-size:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:6px}
::selection{background:var(--blue-soft);color:var(--blue-dark)}

/* ---------- 结构骨架 ---------- */
.app{min-height:100vh}
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar);z-index:80;
  background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:20px 14px 18px;
}
.brand{display:flex;align-items:center;gap:10px;padding:6px 8px 16px;border-bottom:1px solid var(--line)}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;background:var(--blue);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:15px;letter-spacing:.02em;box-shadow:0 6px 14px rgba(47,109,224,.28)
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:16px;font-weight:700;color:var(--text)}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.14em;text-transform:uppercase}
.nav-group{margin-top:18px}
.nav-title{font-size:12px;color:#8A99A8;letter-spacing:.06em;padding:0 10px 8px}
.nav-list{display:flex;flex-direction:column;gap:3px}
.nav-link{
  position:relative;display:flex;align-items:center;gap:10px;
  padding:10px 12px;border-radius:10px;color:#3C4A5A;font-size:14.5px;font-weight:500;
  transition:background-color .16s ease,color .16s ease;
}
.nav-link::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;border-radius:0 3px 3px 0;background:var(--blue);transition:height .18s ease
}
.nav-link:hover{background:var(--blue-soft);color:var(--blue-dark)}
.nav-link.active{background:var(--blue-soft);color:var(--blue);font-weight:700}
.nav-link.active::before{height:22px}
.nav-ico{width:18px;height:18px;flex:0 0 18px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.sidebar-foot{
  margin-top:auto;padding:14px 12px 4px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--muted);line-height:1.7
}
.sidebar-foot strong{display:block;color:var(--text);font-size:13.5px;margin-bottom:4px}

.topbar{display:none}
.scrim{display:none}
.content{margin-left:var(--sidebar);min-height:100vh;display:flex;flex-direction:column}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 26px}
@media (min-width:1280px){.container{max-width:1280px}}

/* ---------- Foundation 栅格间距覆盖 ---------- */
.grid-x.grid-margin-x{margin-left:calc(var(--gutter) * -1);margin-right:calc(var(--gutter) * -1)}
.grid-x.grid-margin-x>.cell{padding-left:var(--gutter);padding-right:var(--gutter)}
.grid-x.grid-margin-x>.cell:first-child{padding-left:var(--gutter)}
.grid-x{align-items:stretch}

/* ---------- 通用组件 ---------- */
section{padding:88px 0}
.sec-head{max-width:760px;margin-bottom:28px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;
  color:var(--blue);background:var(--blue-soft);border-radius:999px;padding:5px 12px;margin-bottom:14px;
  letter-spacing:.02em
}
h1{font-size:44px;line-height:1.25;font-weight:700;letter-spacing:-.01em}
h2{font-size:30px;line-height:1.32;font-weight:700}
h3{font-size:20px;line-height:1.45;font-weight:600}
.lede{font-size:16px;color:var(--muted);max-width:720px;margin-top:14px}
p{max-width:760px}
.muted{color:var(--muted)}
.small{font-size:13.5px;line-height:1.65}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:600;border:1.5px solid transparent;white-space:nowrap;
  transition:transform .16s ease,background-color .16s ease,border-color .16s ease,box-shadow .16s ease,color .16s ease
}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 4px 12px rgba(47,109,224,.24)}
.btn-primary:hover{background:var(--blue-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(47,109,224,.28)}
.btn-ghost{background:transparent;color:var(--blue);border-color:rgba(47,109,224,.42)}
.btn-ghost:hover{background:var(--blue-soft);color:var(--blue-dark);border-color:var(--blue)}
.btn-sm{height:42px;padding:0 20px;font-size:14.5px}
.btn:active{transform:translateY(0)}

.tag{
  display:inline-flex;align-items:center;gap:5px;border-radius:999px;
  padding:5px 12px;font-size:12.5px;font-weight:500;line-height:1.5;
  background:#F2F5F9;color:#4B5A6B;border:1px solid transparent
}
.tag-teal{background:rgba(22,194,163,.12);color:#0E8C77}
.tag-blue{background:var(--blue-soft);color:var(--blue-dark)}
.tag-amber{background:rgba(255,177,61,.18);color:#9A6209}

.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-h);border-color:#D6E0EE}
.card-pad{padding:24px}
.thumb{
  position:relative;display:block;width:100%;aspect-ratio:16/9;overflow:hidden;
  border-radius:var(--r-img);background:var(--blue-soft)
}
.thumb img{width:100%;height:100%;object-fit:cover}
.thumb .ph{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  font-size:30px;font-weight:700;color:var(--blue);background:var(--blue-soft)
}
.badge{
  position:absolute;left:12px;bottom:12px;background:rgba(27,36,48,.82);color:#fff;
  font-size:12.5px;padding:5px 11px;border-radius:999px;backdrop-filter:blur(2px)
}
.arrow{display:inline-flex;transition:transform .18s ease;color:var(--blue)}

/* ---------- Hero ---------- */
.hero{padding:76px 0 72px;background:
  radial-gradient(1000px 420px at 88% -10%, rgba(47,109,224,.10), transparent 62%),
  linear-gradient(180deg,#FFFFFF 0%, #F7F9FC 100%);
  border-bottom:1px solid var(--line)}
.hero-copy h1{margin-bottom:18px}
.hero-copy .lede{font-size:17px;max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-points{display:flex;flex-wrap:wrap;gap:22px;margin-top:30px}
.hero-point{display:flex;flex-direction:column;gap:2px}
.hero-point b{font-size:22px;font-weight:700;color:var(--blue);letter-spacing:-.01em}
.hero-point span{font-size:13px;color:var(--muted)}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px;padding-top:24px;border-top:1px dashed var(--line)}
.hero-visual{position:relative}
.hero-visual img{width:100%;aspect-ratio:4/3.4;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--shadow)}
.hero-float{
  position:absolute;right:16px;top:16px;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:12px 16px;box-shadow:var(--shadow-h);display:flex;align-items:center;gap:10px
}
.hero-float b{font-size:19px;color:var(--amber);font-weight:700;letter-spacing:-.01em}
.hero-float span{font-size:12.5px;color:var(--muted)}

/* ---------- 痛点 ---------- */
.pain{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.pain-card{
  height:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;transition:border-color .18s ease,box-shadow .18s ease
}
.pain-card:hover{border-color:#CFDcec;box-shadow:var(--shadow)}
.pain-ico{
  width:40px;height:40px;border-radius:12px;background:var(--blue-soft);color:var(--blue);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px
}
.pain-ico svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.pain-card h3{font-size:16.5px;margin-bottom:8px}
.pain-card p{font-size:14px;color:var(--muted);max-width:none}

/* ---------- 解决方案 ---------- */
.solution-list{display:flex;flex-direction:column;gap:18px;margin-top:6px}
.solution-list li{display:flex;gap:12px;align-items:flex-start}
.solution-list li i{
  flex:0 0 22px;width:22px;height:22px;border-radius:50%;background:var(--teal);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:12px;font-style:normal;margin-top:5px
}
.solution-list li p{font-size:15px;color:#3C4A5A;max-width:640px}
.ability{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.solution-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--shadow)}

/* ---------- 步骤 ---------- */
.steps{position:relative;margin-top:12px}
.step{position:relative;padding:0 18px 0 0}
.step-num{
  width:52px;height:52px;border-radius:50%;background:var(--blue);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:21px;font-weight:700;
  letter-spacing:-.02em;margin-bottom:16px;box-shadow:0 8px 18px rgba(47,109,224,.24)
}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14px;color:var(--muted);max-width:280px}
.step:not(:last-child)::after{
  content:"";position:absolute;right:-6px;top:26px;width:calc(100% - 66px);
  border-top:1px dashed #C9D6E8;left:66px
}

/* ---------- 数据条 ---------- */
.stats{background:var(--blue-soft);border-top:1px solid #DCE7FB;border-bottom:1px solid #DCE7FB;padding:56px 0}
.stat{text-align:left;padding:6px 18px}
.stat b{display:block;font-size:36px;font-weight:700;color:var(--blue);line-height:1.15;letter-spacing:-.02em}
.stat b em{font-style:normal;font-size:15px;color:var(--teal);font-weight:700;margin-left:6px}
.stat span{font-size:13.5px;color:var(--muted)}

/* ---------- 分类入口 ---------- */
.cat-grid{margin-top:8px}
.cat-card{
  display:flex;align-items:center;justify-content:space-between;gap:12px;height:100%;
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px 20px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease
}
.cat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-h);border-color:#D6E0EE}
.cat-card:hover .arrow{transform:translateX(4px)}
.cat-card h3{font-size:16px;margin-bottom:4px;color:var(--text)}
.cat-card:hover h3{color:var(--blue-dark)}
.cat-card span{font-size:13px;color:var(--muted)}
.cat-card.major{background:linear-gradient(180deg,#FFFFFF 0%,#F6F9FF 100%);border-color:#D7E3F8}
.cat-card.major .cat-dot{background:var(--blue);color:#fff}

/* ---------- 清单卡 ---------- */
.list-card{height:100%;display:flex;flex-direction:column;overflow:hidden}
.list-card .thumb{border-radius:0;aspect-ratio:16/9}
.list-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.list-body h3{font-size:16.5px;line-height:1.5}
.list-body p{font-size:13.5px;color:var(--muted);max-width:none}
.list-tags{display:flex;flex-wrap:wrap;gap:7px}
.list-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:#8A99A8}

/* ---------- 标签矩阵 ---------- */
.tagmatrix{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.tag-group{margin-bottom:26px}
.tag-group h3{font-size:15px;color:#3C4A5A;margin-bottom:12px}
.tag-scroll{display:flex;flex-wrap:wrap;gap:10px}
.mtag{
  display:inline-flex;align-items:center;background:#F2F5F9;color:#43536A;border:1px solid #E6ECF4;
  border-radius:999px;padding:8px 16px;font-size:13.5px;font-weight:500;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease
}
.mtag:hover{background:var(--blue);color:#fff;border-color:var(--blue)}

/* ---------- 场景 Z 字 ---------- */
.zig{gap:0}
.zig img{width:100%;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--shadow)}
.zig img.tall{aspect-ratio:4/3.1}
.zig img.wide{aspect-ratio:16/10}
.zig-copy h3{font-size:22px;margin-bottom:12px}
.zig-copy p{font-size:15px;color:#3C4A5A}
.zig-copy .ability{margin-top:18px}

/* ---------- 口碑 ---------- */
.voice{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.voice-card{height:100%;padding:26px 24px;position:relative}
.quote{
  position:absolute;right:22px;top:10px;font-size:56px;line-height:1;color:rgba(22,194,163,.22);
  font-weight:700;font-family:Georgia,serif
}
.voice-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:44px;height:44px;border-radius:50%;background:var(--blue-soft);color:var(--blue);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex:0 0 44px
}
.voice-head b{display:block;font-size:15px}
.voice-card p{font-size:14.5px;color:#3C4A5A;max-width:none}

/* ---------- 人群 ---------- */
.people-card{height:100%;padding:22px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card)}
.people-card h3{font-size:16.5px;margin-bottom:8px}
.people-card p{font-size:13.5px;color:var(--muted);max-width:none}
.people-num{font-size:12.5px;font-weight:700;color:var(--teal);letter-spacing:.08em;margin-bottom:10px;display:block}

/* ---------- 专题横滑 ---------- */
.topic-rail{display:flex;gap:22px;overflow-x:auto;padding:6px 2px 18px;scroll-snap-type:x mandatory}
.topic-rail::-webkit-scrollbar{height:6px}
.topic-rail::-webkit-scrollbar-thumb{background:#D5DEEA;border-radius:999px}
.topic-rail::-webkit-scrollbar-track{background:transparent}
.topic-card{
  flex:0 0 300px;scroll-snap-align:start;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow);transition:transform .18s ease,box-shadow .18s ease
}
.topic-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-h)}
.topic-card .thumb{border-radius:0;aspect-ratio:3/2}
.topic-body{padding:16px 18px 18px}
.topic-body h3{font-size:15.5px;margin-bottom:6px}
.topic-body span{font-size:12.5px;color:var(--muted)}
.topic-count{
  position:absolute;left:12px;top:12px;background:var(--amber);color:#573300;
  font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px
}

/* ---------- 指标看板 ---------- */
.metrics{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.metric{height:100%;padding:22px;border:1px solid var(--line);border-radius:var(--r-card);background:#fff}
.metric-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:12px}
.metric-head b{font-size:15px}
.metric-head i{font-style:normal;font-size:15px;font-weight:700;color:var(--blue)}
.bar{height:9px;border-radius:999px;background:#EDF1F7;overflow:hidden}
.bar span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--blue),var(--teal))}
.metric p{font-size:13px;color:var(--muted);margin-top:12px;max-width:none}

/* ---------- 资讯 ---------- */
.news-main{height:100%;display:flex;flex-direction:column;overflow:hidden}
.news-main .thumb{border-radius:0;aspect-ratio:16/9}
.news-side{display:flex;flex-direction:column;gap:14px}
.news-item{
  display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:16px 18px;transition:border-color .18s ease,box-shadow .18s ease
}
.news-item:hover{border-color:#D6E0EE;box-shadow:var(--shadow)}
.news-item time{flex:0 0 74px;font-size:12.5px;color:#8A99A8;padding-top:2px}
.news-item h3{font-size:15px;margin-bottom:5px}
.news-item p{font-size:13px;color:var(--muted);max-width:none}
.news-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-body h3{font-size:19px}
.news-body p{font-size:14px;color:var(--muted);max-width:none}

/* ---------- FAQ ---------- */
.faq-wrap{margin-top:8px;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;justify-content:space-between;gap:18px;
  padding:20px 16px 20px 18px;font-size:16px;font-weight:600;border-left:3px solid transparent;
  transition:background-color .16s ease,border-color .16s ease,color .16s ease
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--blue-soft)}
.faq-item[open] summary{border-left-color:var(--blue);color:var(--blue-dark);background:#F8FBFF}
.faq-item summary .sign{
  flex:0 0 24px;width:24px;height:24px;border-radius:50%;background:#EEF2F8;color:var(--blue);
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;line-height:1
}
.faq-item[open] summary .sign{background:var(--blue);color:#fff}
.faq-answer{padding:0 18px 22px 21px;font-size:14.5px;color:#3C4A5A;max-width:800px}

/* ---------- 转化表单 ---------- */
.cta-band{background:var(--blue-soft);border-top:1px solid #DCE7FB}
.cta-box{
  background:#fff;border:1px solid #D9E5FA;border-radius:22px;padding:34px;
  box-shadow:var(--shadow);display:flex;flex-wrap:wrap;gap:26px;align-items:center;justify-content:space-between
}
.cta-copy{max-width:520px}
.cta-copy h2{font-size:26px;margin-bottom:10px}
.cta-copy p{font-size:14.5px;color:var(--muted)}
.form-inline{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:12.5px;color:var(--muted)}
.field input,.field select{
  height:44px;min-width:220px;padding:0 14px;border:1.5px solid var(--line);border-radius:10px;
  background:#fff;color:var(--text);transition:border-color .16s ease,box-shadow .16s ease
}
.field input::placeholder{color:#9AA8B7}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--blue);box-shadow:0 0 0 4px rgba(47,109,224,.14)
}

/* ---------- 页脚 ---------- */
.site-foot{background:#fff;border-top:1px solid var(--line);padding:64px 0 26px;margin-top:auto}
.foot-col h4{font-size:14.5px;margin-bottom:14px;color:var(--text)}
.foot-col p{font-size:13.5px;color:var(--muted);max-width:320px}
.foot-list{display:flex;flex-direction:column;gap:9px}
.foot-list a{font-size:13.5px;color:var(--muted)}
.foot-list a:hover{color:var(--blue)}
.foot-mini{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.foot-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12.5px;color:#8A99A8
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .step:not(:last-child)::after{display:none}
}
@media (max-width:1023px){
  :root{--sidebar:0px}
  .sidebar{
    transform:translateX(-104%);transition:transform .26s ease;width:264px;
    box-shadow:0 20px 46px rgba(20,40,80,.18)
  }
  .sidebar.open{transform:translateX(0)}
  .content{margin-left:0}
  .topbar{
    position:sticky;top:0;z-index:70;display:flex;align-items:center;justify-content:space-between;
    gap:12px;height:60px;padding:0 16px;background:rgba(255,255,255,.94);
    border-bottom:1px solid var(--line);backdrop-filter:blur(8px)
  }
  .topbar .brand-mini{display:flex;align-items:center;gap:9px;font-weight:700;font-size:15.5px}
  .topbar .brand-mini .brand-mark{width:32px;height:32px;flex:0 0 32px;border-radius:10px;font-size:13px}
  .icon-btn{
    width:40px;height:40px;border-radius:11px;border:1px solid var(--line);background:#fff;
    display:flex;align-items:center;justify-content:center;color:#3C4A5A
  }
  .icon-btn svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}
  .scrim{
    display:block;position:fixed;inset:0;background:rgba(18,30,50,.34);opacity:0;pointer-events:none;
    transition:opacity .24s ease;z-index:75
  }
  .scrim.on{opacity:1;pointer-events:auto}
  section{padding:56px 0}
  h1{font-size:34px}
  h2{font-size:25px}
  .container{padding:0 18px}
  .hero{padding:44px 0 48px}
  .hero-visual{margin-top:28px}
  .stat{padding:14px 12px}
  .cta-box{padding:24px}
}
@media (max-width:767px){
  h1{font-size:29px}
  h2{font-size:22px}
  h3{font-size:18px}
  section{padding:48px 0}
  .hero-copy .lede{font-size:15.5px}
  .hero-actions .btn{width:100%}
  .cta-box{flex-direction:column;align-items:stretch}
  .form-inline{flex-direction:column;align-items:stretch}
  .field input,.field select{width:100%;min-width:0}
  .news-item{flex-direction:column;gap:8px}
  .news-item time{flex:none}
  .faq-item summary{font-size:15px;padding:16px 12px 16px 14px}
  .topic-card{flex:0 0 258px}
}
@media (max-width:520px){
  .container{padding:0 14px}
  h1{font-size:26px}
  .stat b{font-size:28px}
  .card-pad{padding:18px}
  .topic-card{flex:0 0 82%}
}

/* roulang page: category1 */
:root{
 --blue:#2F6DE0; --blue-dark:#1F55BE; --blue-soft:#EEF4FF;
 --teal:#16C2A3; --amber:#FFB13D;
 --bg:#F7F9FC; --card:#FFFFFF; --line:#E4EAF2;
 --text:#1B2430; --muted:#5A6B7D;
 --r-card:18px; --r-btn:12px; --r-img:20px;
 --shadow:0 6px 20px rgba(31,60,110,.08);
 --shadow-h:0 12px 28px rgba(31,60,110,.14);
 --sidebar:0px; --gutter:12px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
 margin:0;padding:0;background:var(--bg);color:var(--text);
 font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
 font-size:16px;line-height:1.75;letter-spacing:.01em;
}
img{max-width:100%;display:block;border:0}
a{color:var(--blue);text-decoration:none;transition:color .16s ease,background-color .16s ease,border-color .16s ease}
a:hover{color:var(--blue-dark)}
button,input,select{font-family:inherit;font-size:inherit}
button{cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--text);line-height:1.3;font-weight:700}
p{margin:0}
h1{font-size:40px;letter-spacing:-.01em}
h2{font-size:29px;letter-spacing:-.01em}
h3{font-size:19px;font-weight:600}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 26px}
.muted{color:var(--muted)}

/* ============ Foundation 栅格间距覆盖 ============ */
.grid-x.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-x.grid-margin-x>.cell{padding-left:12px;padding-right:12px}

/* ============ 侧栏 App Shell ============ */
.sidebar{
 position:fixed;left:0;top:0;bottom:0;width:240px;background:#fff;border-right:1px solid var(--line);
 padding:22px 16px 24px;display:flex;flex-direction:column;overflow-y:auto;z-index:60;
 transition:transform .24s ease;
}
.brand{display:flex;align-items:center;gap:10px;padding:6px 8px 16px;border-bottom:1px solid var(--line)}
.brand-mark{
 width:38px;height:38px;flex:0 0 38px;border-radius:12px;background:var(--blue);color:#fff;
 display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;
 box-shadow:0 6px 14px rgba(47,109,224,.28)
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:16px;font-weight:700;color:var(--text)}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.14em}
.nav-group{margin-top:18px}
.nav-title{font-size:12px;color:#8A99A8;letter-spacing:.06em;padding:0 10px 8px}
.nav-list{display:flex;flex-direction:column;gap:3px}
.nav-link{
 position:relative;display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;
 color:#3C4A5A;font-size:14.5px;font-weight:500;
 transition:background-color .16s ease,color .16s ease;
}
.nav-link::before{
 content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
 width:3px;height:0;border-radius:0 3px 3px 0;background:var(--blue);transition:height .18s ease;
}
.nav-link:hover{background:var(--blue-soft);color:var(--blue-dark)}
.nav-link.active{background:var(--blue-soft);color:var(--blue);font-weight:700}
.nav-link.active::before{height:22px}
.nav-ico{width:18px;height:18px;flex:0 0 18px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.side-foot{margin-top:auto;padding:16px 10px 0;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted);line-height:1.7}

/* ============ 移动端顶部栏 ============ */
.topbar{
 display:none;position:fixed;left:0;right:0;top:0;height:58px;z-index:70;
 background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
 border-bottom:1px solid var(--line);align-items:center;justify-content:space-between;padding:0 14px;
}
.icon-btn{
 width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
 border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--text);
 transition:background-color .16s ease,border-color .16s ease,transform .16s ease;
}
.icon-btn:hover{background:var(--blue-soft);border-color:rgba(47,109,224,.35);color:var(--blue-dark)}
.icon-btn svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.brand-mini{display:flex;align-items:center;gap:8px;font-weight:700;font-size:15px;color:var(--text)}
.brand-mini .brand-mark{width:28px;height:28px;flex:0 0 28px;border-radius:9px;font-size:12px;box-shadow:none}
.drawer-mask{display:none}

/* ============ 主内容区 ============ */
.main{margin-left:var(--sidebar);min-height:60vh}
section{padding:76px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-bottom:28px}
.section-head p{margin-top:10px;font-size:15px;color:var(--muted);max-width:720px}
.count-tag{
 display:inline-flex;align-items:center;height:34px;padding:0 14px;border-radius:999px;
 background:var(--blue-soft);color:var(--blue-dark);font-size:13px;font-weight:600;white-space:nowrap
}

/* ============ 分类页头部 ============ */
.page-head{
 position:relative;overflow:hidden;padding:52px 0 44px;
 background:linear-gradient(180deg,#FFFFFF 0%,#F7F9FC 100%);
 border-bottom:1px solid var(--line);
}
.page-head::before{
 content:"";position:absolute;inset:0;background-image:url("/assets/images/backpic/back-3.jpg");
 background-size:cover;background-position:center;opacity:.09;
}
.page-head::after{
 content:"";position:absolute;inset:0;
 background-image:radial-gradient(rgba(47,109,224,.16) 1px,transparent 1px);
 background-size:22px 22px;opacity:.5;
}
.page-head .container{position:relative;z-index:1}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:18px}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--blue)}
.crumbs span{color:#9AA8B6}
.page-head h1{max-width:900px}
.head-desc{margin-top:18px;font-size:16.5px;color:#41505F;max-width:760px}
.head-stats{margin-top:18px;font-size:13.5px;color:var(--muted);display:flex;flex-wrap:wrap;gap:8px 18px}
.head-stats span{display:inline-flex;align-items:center;gap:6px}
.head-stats b{color:var(--blue);font-weight:700}

/* ============ 筛选工具条 ============ */
.toolbar{
 position:sticky;top:0;z-index:40;background:rgba(247,249,252,.95);
 backdrop-filter:blur(6px);border-bottom:1px solid var(--line);padding:13px 0;
}
.toolbar-inner{display:flex;align-items:center;gap:10px;overflow-x:auto;scrollbar-width:none;padding-bottom:2px}
.toolbar-inner::-webkit-scrollbar{display:none}
.filter-group{display:flex;align-items:center;gap:8px;flex:0 0 auto;padding-right:16px;border-right:1px solid var(--line)}
.filter-group:last-child{border-right:0;padding-right:0}
.filter-label{font-size:12.5px;color:#8A99A8;white-space:nowrap;padding-left:2px}
.chip{
 flex:0 0 auto;height:34px;padding:0 15px;border-radius:999px;border:1px solid var(--line);
 background:#fff;color:#4B5A6B;font-size:13.5px;font-weight:500;white-space:nowrap;
 transition:background-color .16s ease,color .16s ease,border-color .16s ease,transform .16s ease;
}
.chip:hover{border-color:rgba(47,109,224,.42);color:var(--blue-dark);background:var(--blue-soft)}
.chip.is-active{background:var(--blue);border-color:var(--blue);color:#fff}
.chip.is-active:hover{background:var(--blue-dark);border-color:var(--blue-dark);color:#fff}

/* ============ 列表主体 ============ */
.item-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.item{
 display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
 border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow);
 transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.item:hover{transform:translateY(-3px);box-shadow:var(--shadow-h);border-color:#D6E0EE}
.item-media{position:relative;aspect-ratio:16/9;background:var(--blue-soft);overflow:hidden}
.item-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.item:hover .item-media img{transform:scale(1.03)}
.badge{
 position:absolute;left:12px;bottom:12px;background:rgba(27,36,48,.82);color:#fff;
 font-size:12px;padding:4px 11px;border-radius:999px;letter-spacing:.02em
}
.badge-amber{background:rgba(255,177,61,.94);color:#5A3A00;left:auto;right:12px;bottom:auto;top:12px;font-weight:600}
.item-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.item-tags{display:flex;flex-wrap:wrap;gap:7px}
.tag{
 display:inline-flex;align-items:center;gap:5px;border-radius:999px;padding:4px 11px;
 font-size:12.5px;font-weight:500;line-height:1.5;background:#F2F5F9;color:#4B5A6B;border:1px solid transparent
}
.tag-blue{background:var(--blue-soft);color:var(--blue-dark)}
.tag-teal{background:rgba(22,194,163,.12);color:#0E8C77}
.tag-amber{background:rgba(255,177,61,.18);color:#9A6209}
.item h3{font-size:18px;line-height:1.45}
.item h3 a{color:var(--text)}
.item h3 a:hover{color:var(--blue)}
.item-body p{font-size:14px;color:var(--muted);line-height:1.7}
.item-time{margin-top:auto;font-size:12.5px;color:#8A99A8;padding-top:6px;border-top:1px dashed var(--line)}
.item-lead{grid-column:span 2;flex-direction:row}
.item-lead .item-media{width:47%;flex:0 0 47%;aspect-ratio:auto;min-height:270px}
.item-lead .item-media img{position:absolute;inset:0;width:100%;height:100%}
.item-lead .item-body{padding:26px 28px}
.item-lead h3{font-size:22px}
.list-more{display:flex;justify-content:center;margin-top:36px}
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 28px;
 border-radius:var(--r-btn);font-size:15.5px;font-weight:600;border:1.5px solid transparent;white-space:nowrap;
 transition:transform .16s ease,background-color .16s ease,border-color .16s ease,box-shadow .16s ease,color .16s ease;
}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 4px 12px rgba(47,109,224,.24)}
.btn-primary:hover{background:var(--blue-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(47,109,224,.28)}
.btn-ghost{background:transparent;color:var(--blue);border-color:rgba(47,109,224,.42)}
.btn-ghost:hover{background:var(--blue);border-color:var(--blue);color:#fff;transform:translateY(-1px)}
.btn-sm{height:42px;padding:0 20px;font-size:14.5px}
.btn:disabled{cursor:default;opacity:.62;transform:none;box-shadow:none}
.btn-ghost:disabled:hover{background:transparent;color:var(--blue);border-color:rgba(47,109,224,.42)}

/* ============ 收录标准 ============ */
.rules-section{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.rule-list{display:grid;grid-template-columns:repeat(2,1fr);gap:8px 40px}
.rule-list li{border-left:3px solid var(--blue);padding:4px 0 4px 20px;margin-bottom:20px}
.rule-list li h3{font-size:17px;margin-bottom:8px}
.rule-list li p{font-size:14.5px;color:var(--muted);max-width:560px}
.rule-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:12px}

/* ============ FAQ ============ */
.faq-wrap{max-width:940px}
.faq details{
 background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;
 overflow:hidden;transition:border-color .16s ease,box-shadow .16s ease
}
.faq details:hover{border-color:#CFDCEC;box-shadow:var(--shadow)}
.faq summary{
 list-style:none;cursor:pointer;padding:17px 22px;font-size:16px;font-weight:600;color:var(--text);
 display:flex;align-items:center;justify-content:space-between;gap:14px;
 transition:background-color .16s ease
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
 content:"+";font-size:20px;font-weight:500;color:var(--blue);line-height:1;flex:0 0 auto
}
.faq details[open] summary{background:var(--blue-soft);border-left:3px solid var(--blue);padding-left:19px}
.faq details[open] summary::after{content:"–"}
.faq .faq-body{padding:6px 24px 20px 24px;font-size:14.5px;color:var(--muted);max-width:760px}

/* ============ 专题推荐 ============ */
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.topic{
 display:block;position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
 background:var(--card);box-shadow:var(--shadow);transition:transform .18s ease,box-shadow .18s ease;
}
.topic:hover{transform:translateY(-3px);box-shadow:var(--shadow-h)}
.topic-media{position:relative;aspect-ratio:3/2;background:var(--blue-soft)}
.topic-media img{width:100%;height:100%;object-fit:cover}
.topic-count{
 position:absolute;right:12px;top:12px;background:rgba(255,177,61,.95);color:#5A3A00;
 font-size:12px;font-weight:700;padding:4px 11px;border-radius:999px
}
.topic-body{padding:18px 20px 20px}
.topic-body h3{font-size:17px;margin-bottom:8px;color:var(--text)}
.topic-body p{font-size:13.5px;color:var(--muted)}

/* ============ 使用提示 ============ */
.notice-section{padding-top:0}
.notice{
 display:flex;gap:16px;align-items:flex-start;background:var(--blue-soft);
 border:1px solid rgba(47,109,224,.16);border-radius:var(--r-card);padding:24px 26px;
}
.notice-ico{
 width:40px;height:40px;flex:0 0 40px;border-radius:12px;background:#fff;color:var(--blue);
 display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px rgba(47,109,224,.14)
}
.notice-ico svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.notice h3{font-size:17px;margin-bottom:8px}
.notice p{font-size:14.5px;color:#41505F;max-width:900px}
.notice p + p{margin-top:6px}

/* ============ 底部轻 CTA ============ */
.mini-cta{
 display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
 background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
 padding:22px 26px;box-shadow:var(--shadow)
}
.mini-cta h3{font-size:18px}
.mini-cta p{font-size:14px;color:var(--muted);margin-top:6px}

/* ============ 页脚 ============ */
.site-foot{margin-left:var(--sidebar);background:#fff;border-top:1px solid var(--line);padding:64px 0 0}
.foot-col h4{font-size:16px;margin-bottom:14px}
.foot-col p{font-size:14px;color:var(--muted);max-width:340px}
.foot-mini{display:flex;gap:8px;margin-top:16px;flex-wrap:wrap}
.foot-list{display:flex;flex-direction:column;gap:9px;font-size:14.5px}
.foot-list a{color:#41505F}
.foot-list a:hover{color:var(--blue)}
.form-inline{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:12.5px;color:var(--muted)}
.field input{
 height:44px;border:1px solid var(--line);border-radius:10px;padding:0 14px;background:#fff;
 color:var(--text);outline:none;min-width:180px;
 transition:border-color .16s ease,box-shadow .16s ease
}
.field input:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(47,109,224,.14)}
.foot-bottom{
 display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
 border-top:1px solid var(--line);margin-top:52px;padding:22px 0;font-size:13px;color:var(--muted)
}

/* ============ 响应式 ============ */
@media (min-width:1024px){
 :root{--sidebar:240px}
 .topbar{display:none}
}
@media (max-width:1023px){
 :root{--sidebar:0px}
 .topbar{display:flex}
 .main{padding-top:58px}
 .sidebar{transform:translateX(-100%);box-shadow:0 0 40px rgba(20,40,80,.18)}
 .sidebar.open{transform:translateX(0)}
 .drawer-mask{position:fixed;inset:0;background:rgba(20,32,48,.42);z-index:55}
 .drawer-mask.show{display:block}
 .toolbar{top:58px}
 .item-grid{grid-template-columns:repeat(2,1fr)}
 .topic-grid{grid-template-columns:repeat(2,1fr)}
 .rule-list{grid-template-columns:1fr;gap:0}
 h1{font-size:34px}
 h2{font-size:25px}
}
@media (max-width:767px){
 section{padding:52px 0}
 .container{padding:0 18px}
 .page-head{padding:38px 0 34px}
 h1{font-size:28px}
 h2{font-size:23px}
 .item-grid{grid-template-columns:1fr}
 .item-lead{grid-column:auto;flex-direction:column}
 .item-lead .item-media{width:100%;flex:0 0 auto;aspect-ratio:16/9;min-height:0}
 .item-lead .item-media img{position:static;height:100%}
 .item-lead .item-body{padding:20px}
 .item-lead h3{font-size:19px}
 .topic-grid{grid-template-columns:1fr}
 .mini-cta{flex-direction:column;align-items:flex-start}
 .foot-bottom{flex-direction:column}
 .field input{min-width:0;width:100%}
 .form-inline{width:100%}
 .field{width:100%}
}
@media (min-width:1440px){
 .container{max-width:1320px}
}