/* roulang page: index */
:root{
  --bg:#0C0B12;
  --bg-block:#14121D;
  --bg-card:#1C1A28;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --neon:#2FE3B6;
  --neon-soft:rgba(47,227,182,.12);
  --neon-30:rgba(47,227,182,.30);
  --neon-08:rgba(47,227,182,.08);
  --spark:#FF8A3D;
  --t1:#F2F1F7;
  --t2:#A9A6BC;
  --t3:#6E6B80;
  --r-card:16px;
  --r-btn:999px;
  --r-input:12px;
  --shadow-hover:0 14px 32px rgba(0,0,0,.45), 0 0 24px rgba(47,227,182,.18);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input,textarea{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.3;}
p{margin:0;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media(min-width:768px){
  .container{padding-left:32px;padding-right:32px;}
}
.section{padding-top:56px;padding-bottom:56px;}
@media(min-width:768px){
  .section{padding-top:80px;padding-bottom:80px;}
}
@media(min-width:1024px){
  .section{padding-top:96px;padding-bottom:96px;}
}
.section-alt{background:var(--bg-block);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--neon);
  color:#07231C;
  border:1px solid var(--neon);
}
.btn-primary:hover{background:#4DEFC5;box-shadow:0 0 22px rgba(47,227,182,.28);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;
  color:var(--t1);
  border:1px solid var(--neon-30);
}
.btn-ghost:hover{border-color:var(--neon);color:var(--neon);}
.btn-soft{
  background:transparent;
  color:var(--t2);
  border:1px solid var(--line-strong);
  border-radius:12px;
  height:42px;
  padding:0 18px;
  font-size:14px;
}
.btn-soft:hover{border-color:var(--neon-30);color:var(--neon);}
.btn-block{width:100%;}
@media(max-width:767px){
  .btn-block-mobile{width:100%;}
}

/* ---------- 标签 / 胶囊 ---------- */
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  font-size:12px;
  line-height:1.6;
  border-radius:999px;
  background:var(--neon-soft);
  color:var(--neon);
  border:1px solid transparent;
  white-space:nowrap;
}
.chip-spark{background:rgba(255,138,61,.12);color:var(--spark);}
.chip-line{background:transparent;border-color:var(--line-strong);color:var(--t2);}
.chip-active{background:var(--neon-soft);border-color:var(--neon);color:var(--neon);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:70;
  border-bottom:1px solid var(--line);
  background:transparent;
  transition:background-color .25s ease,backdrop-filter .25s ease,border-color .25s ease;
}
.site-header.is-solid{
  background:rgba(12,11,18,.92);
  backdrop-filter:blur(8px);
  border-bottom-color:var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  height:64px;
}
@media(min-width:768px){
  .header-inner{height:72px;}
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:10px;height:10px;
  border-radius:3px;
  background:var(--neon);
  box-shadow:0 0 12px rgba(47,227,182,.6);
  flex-shrink:0;
}
.brand-text{
  display:flex;
  flex-direction:column;
  line-height:1.18;
}
.brand-text b{
  font-size:16px;
  font-weight:700;
  letter-spacing:0;
  color:var(--t1);
}
.brand-text i{
  font-style:normal;
  font-size:11px;
  color:var(--t3);
  letter-spacing:.08em;
}
@media(min-width:768px){
  .brand-text b{font-size:17px;}
}
.main-nav{
  display:none;
}
@media(min-width:1024px){
  .main-nav{
    display:flex;
    align-items:center;
    gap:30px;
  }
}
.nav-link{
  position:relative;
  font-size:14.5px;
  letter-spacing:.02em;
  color:var(--t2);
  padding:6px 0;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;
  bottom:-2px;
  height:2px;
  background:var(--neon);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--neon);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--t1);}
.nav-link.is-active::after{transform:scaleX(1);}
.header-right{
  display:flex;
  align-items:center;
  gap:12px;
}
.header-cta{display:none;}
@media(min-width:768px){
  .header-cta{display:inline-flex;height:42px;padding:0 20px;font-size:14px;}
}
.menu-toggle{
  width:42px;height:42px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line-strong);
  border-radius:12px;
  color:var(--t1);
}
.menu-toggle:hover{border-color:var(--neon-30);color:var(--neon);}
@media(min-width:1024px){
  .menu-toggle{display:none;}
}
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.7);
  opacity:0;
  pointer-events:none;
  transition:opacity .25s ease;
  z-index:80;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;
  top:0;right:0;
  width:min(320px,86vw);
  height:100%;
  background:var(--bg-block);
  border-left:1px solid var(--line);
  transform:translateX(100%);
  transition:transform .28s ease;
  z-index:90;
  display:flex;
  flex-direction:column;
  padding:20px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.drawer-close{
  width:36px;height:36px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);
  border-radius:10px;
  color:var(--t2);
}
.drawer-nav{flex:1;padding-top:8px;}
.drawer-nav a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:56px;
  font-size:16px;
  color:var(--t2);
  border-bottom:1px solid var(--line);
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--neon);}
.drawer-foot{padding-top:16px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  min-height:560px;
  display:flex;
  align-items:flex-end;
  padding-top:112px;
  padding-bottom:40px;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(to right, rgba(12,11,18,.96) 0%, rgba(12,11,18,.80) 42%, rgba(12,11,18,.42) 72%, rgba(12,11,18,.72) 100%),
    linear-gradient(to top, rgba(12,11,18,1) 2%, rgba(12,11,18,.28) 42%, rgba(12,11,18,.62) 100%);
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(47,227,182,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(47,227,182,.05) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.6;
  pointer-events:none;
}
.hero-inner{
  position:relative;
  z-index:2;
  width:100%;
}
.hero-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:36px;
  align-items:end;
}
@media(min-width:1024px){
  .hero-grid{grid-template-columns:minmax(0,1fr) 300px;gap:48px;}
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 14px;
  border:1px solid var(--neon-30);
  border-radius:999px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--neon);
  background:rgba(12,11,18,.4);
}
.hero-title{
  margin-top:20px;
  font-size:34px;
  font-weight:800;
  line-height:1.24;
  letter-spacing:-.01em;
  max-width:16em;
}
@media(min-width:640px){.hero-title{font-size:44px;}}
@media(min-width:1024px){.hero-title{font-size:54px;line-height:1.18;}}
.hero-sub{
  margin-top:20px;
  font-size:17px;
  color:var(--t2);
  max-width:34em;
  line-height:1.9;
}
.hero-actions{
  margin-top:30px;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.hero-metrics{
  margin-top:38px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:0 24px;
  border-top:1px solid var(--line);
  padding-top:20px;
}
.hero-metrics li{
  display:flex;
  align-items:baseline;
  gap:8px;
  padding:6px 0;
  position:relative;
}
.hero-metrics li + li::before{
  content:"";
  position:absolute;
  left:-12px;
  top:50%;
  width:1px;
  height:20px;
  transform:translateY(-50%);
  background:var(--line-strong);
}
.hero-metrics b{
  font-size:16px;
  color:var(--neon);
  font-weight:700;
}
.hero-metrics span{
  font-size:13px;
  color:var(--t3);
}
.steps-card{
  display:none;
}
@media(min-width:1024px){
  .steps-card{
    display:block;
    background:rgba(28,26,40,.82);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:22px;
  }
}
.steps-card h3{
  font-size:14px;
  letter-spacing:.06em;
  color:var(--t2);
  font-weight:600;
}
.steps-list{margin-top:18px;position:relative;}
.steps-list::before{
  content:"";
  position:absolute;
  left:13px;
  top:14px;
  bottom:14px;
  width:2px;
  background:linear-gradient(to bottom,var(--neon),rgba(47,227,182,.15));
}
.step{
  position:relative;
  display:flex;
  align-items:center;
  gap:14px;
  padding:10px 0;
}
.step-dot{
  position:relative;
  z-index:1;
  width:28px;height:28px;
  flex-shrink:0;
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;
  font-weight:700;
  background:var(--bg-card);
  border:1px solid var(--line-strong);
  color:var(--t3);
}
.step.is-current .step-dot{
  background:var(--neon);
  border-color:var(--neon);
  color:#07231C;
  box-shadow:0 0 16px rgba(47,227,182,.45);
}
.step-body b{
  display:block;
  font-size:15px;
  color:var(--t2);
  font-weight:600;
}
.step.is-current .step-body b{color:var(--t1);}
.step-body span{
  font-size:12.5px;
  color:var(--t3);
}

/* ---------- 通用板块标题 ---------- */
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:26px;
}
.section-head h2{
  font-size:25px;
  font-weight:700;
}
@media(min-width:768px){
  .section-head h2{font-size:30px;}
}
.section-head p{
  margin-top:10px;
  font-size:15px;
  color:var(--t2);
  max-width:40em;
}
.link-more{
  font-size:14px;
  color:var(--t2);
  display:inline-flex;
  align-items:center;
  gap:6px;
  white-space:nowrap;
  transition:color .2s ease;
}
.link-more:hover{color:var(--neon);}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--neon);
  margin-bottom:12px;
}

/* ---------- 横滑卡轨 ---------- */
.rail-wrap{position:relative;}
.rail{
  display:flex;
  gap:16px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding-bottom:10px;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.rail::-webkit-scrollbar{display:none;}
.rail-item{
  scroll-snap-align:start;
  flex:0 0 auto;
  width:78%;
}
@media(min-width:640px){.rail-item{width:41%;}}
@media(min-width:768px){.rail-item{width:28%;}}
@media(min-width:1024px){.rail-item{width:23%;}}
@media(min-width:1280px){.rail-item{width:20.5%;}}
.rail-arrows{
  display:none;
}
@media(min-width:768px){
  .rail-arrows{display:flex;gap:10px;}
}
.rail-btn{
  width:40px;height:40px;
  border-radius:50%;
  border:1px solid var(--line-strong);
  color:var(--t2);
  display:inline-flex;align-items:center;justify-content:center;
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.rail-btn:hover{border-color:var(--neon);color:var(--neon);background:var(--neon-08);}

/* ---------- 卡片 ---------- */
.card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.card:hover{
  transform:translateY(-4px);
  border-color:var(--neon-30);
  box-shadow:var(--shadow-hover);
}
.card-media{
  position:relative;
  overflow:hidden;
  border-radius:14px 14px 0 0;
  background:#100E18;
}
.card-media.ratio-tall{aspect-ratio:3/4;}
.card-media.ratio-wide{aspect-ratio:16/9;}
.card-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.card:hover .card-media img{transform:scale(1.04);}
.card-tag{
  position:absolute;
  top:10px;left:10px;
  padding:3px 10px;
  border-radius:999px;
  font-size:12px;
  background:rgba(12,11,18,.78);
  border:1px solid var(--line-strong);
  color:var(--t1);
  backdrop-filter:blur(4px);
}
.card-tag.is-hot{
  background:rgba(255,138,61,.16);
  border-color:rgba(255,138,61,.4);
  color:var(--spark);
}
.card-body{
  padding:16px 18px 18px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1;
}
.card-body h3{
  font-size:17px;
  line-height:1.5;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-body p{
  font-size:14px;
  color:var(--t2);
  line-height:1.8;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--t3);
  padding-top:8px;
  border-top:1px solid var(--line);
}
.card-foot .arrow{color:var(--neon);font-size:15px;}

.grid-3{
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
}
@media(min-width:640px){.grid-3{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}}
@media(min-width:1024px){.grid-3{grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}}

/* ---------- 分区大卡 ---------- */
.zone-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
}
@media(min-width:768px){.zone-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}}
.zone-card{
  position:relative;
  min-height:280px;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  display:flex;
  align-items:flex-end;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.zone-card:hover{transform:translateY(-4px);border-color:var(--neon-30);box-shadow:var(--shadow-hover);}
.zone-card img{
  position:absolute;inset:0;
  width:100%;height:100%;
  object-fit:cover;
}
.zone-card::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(to top,rgba(12,11,18,.96),rgba(12,11,18,.42) 58%,rgba(12,11,18,.24));
}
.zone-content{
  position:relative;
  z-index:2;
  padding:24px;
  width:100%;
}
.zone-content h3{
  font-size:21px;
  margin-bottom:10px;
}
.zone-content p{
  font-size:14px;
  color:var(--t2);
  line-height:1.8;
}
.zone-link{
  margin-top:16px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--neon);
}

/* ---------- 最新信息列表 ---------- */
.news-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:14px;
}
@media(min-width:1024px){
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 24px;}
}
.news-item{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--bg-card);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.news-item:hover{
  border-color:var(--neon-30);
  transform:translateY(-3px);
  box-shadow:0 12px 26px rgba(0,0,0,.4);
}
.news-link{
  display:block;
  padding:20px 22px;
}
.news-top{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:13px;
  color:var(--t3);
  margin-bottom:10px;
  flex-wrap:wrap;
}
.news-title{
  font-size:18px;
  line-height:1.55;
  margin-bottom:8px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-sum{
  font-size:14.5px;
  color:var(--t2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-foot{
  margin-top:14px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--t3);
}
.empty-state{
  border:1px dashed var(--line-strong);
  border-radius:var(--r-card);
  padding:44px 24px;
  text-align:center;
  background:rgba(20,18,29,.6);
}
.empty-state .empty-icon{
  width:46px;height:46px;
  margin:0 auto 14px;
  border:1px solid var(--line-strong);
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  color:var(--t3);
  font-size:18px;
}
.empty-state p{
  color:var(--t2);
  font-size:15px;
  margin-bottom:16px;
}

/* ---------- 数据 / 证据区 ---------- */
.stat-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px;
}
@media(min-width:768px){.stat-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}}
.stat{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--bg-card);
  padding:22px 20px;
}
.stat b{
  display:block;
  font-size:28px;
  font-weight:800;
  color:var(--neon);
  line-height:1.2;
  letter-spacing:-.02em;
}
.stat span{
  display:block;
  margin-top:8px;
  font-size:14px;
  color:var(--t2);
}
.stat em{
  display:block;
  margin-top:6px;
  font-size:12.5px;
  color:var(--t3);
  font-style:normal;
}

/* ---------- CTA 条带 ---------- */
.cta-band{
  position:relative;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background-color:var(--bg-block);
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(to right,rgba(12,11,18,.96),rgba(12,11,18,.72));
}
.cta-band::after{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(47,227,182,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(47,227,182,.06) 1px,transparent 1px);
  background-size:52px 52px;
  opacity:.55;
}
.cta-inner{
  position:relative;
  z-index:2;
  padding:52px 0;
  display:flex;
  flex-direction:column;
  gap:22px;
}
@media(min-width:768px){
  .cta-inner{
    flex-direction:row;
    align-items:center;
    justify-content:space-between;
    padding:60px 0;
  }
}
.cta-inner h2{
  font-size:24px;
}
@media(min-width:768px){.cta-inner h2{font-size:30px;}}
.cta-inner p{
  margin-top:12px;
  font-size:15px;
  color:var(--t2);
  max-width:46em;
}

/* ---------- FAQ ---------- */
.faq-list{
  max-width:860px;
  border-top:1px solid var(--line);
}
.faq-item{
  border-bottom:1px solid var(--line);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px 0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--t1);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--neon);}
.faq-item.is-open .faq-q{color:var(--neon);}
.faq-icon{
  flex-shrink:0;
  width:26px;height:26px;
  border:1px solid var(--line-strong);
  border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;
  color:var(--t2);
  transition:transform .2s ease,color .2s ease,border-color .2s ease;
}
.faq-item.is-open .faq-icon{
  transform:rotate(45deg);
  color:var(--neon);
  border-color:var(--neon-30);
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .22s ease;
}
.faq-a p{
  padding:0 0 22px;
  font-size:15.5px;
  color:var(--t2);
  line-height:1.85;
  max-width:52em;
}

/* ---------- 表单 ---------- */
.form-panel{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--bg-card);
  padding:24px;
}
.field{margin-bottom:16px;}
.field label{
  display:block;
  font-size:13px;
  color:var(--t2);
  margin-bottom:8px;
}
.field input,
.field textarea{
  width:100%;
  padding:12px 14px;
  font-size:16px;
  color:var(--t1);
  background:var(--bg-block);
  border:1px solid var(--line-strong);
  border-radius:var(--r-input);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder,
.field textarea::placeholder{color:var(--t3);}
.field input:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--neon);
  box-shadow:0 0 0 4px rgba(47,227,182,.12);
}
.field-note{
  font-size:13px;
  color:var(--t3);
  margin-top:12px;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg);
  border-top:1px solid var(--line);
  padding-top:52px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:34px;
  padding-bottom:40px;
}
@media(min-width:640px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media(min-width:1024px){
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  color:var(--t2);
  max-width:30em;
  line-height:1.85;
}
.footer-col h4{
  font-size:14px;
  letter-spacing:.06em;
  color:var(--t1);
  margin-bottom:16px;
}
.footer-col li{margin-bottom:11px;}
.footer-col a,
.footer-col span{
  font-size:14px;
  color:var(--t2);
  transition:color .2s ease;
}
.footer-col a:hover{color:var(--neon);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 28px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--t3);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;
  right:20px;
  bottom:24px;
  width:48px;height:48px;
  border-radius:50%;
  background:var(--bg-card);
  border:1px solid var(--line-strong);
  color:var(--t2);
  display:flex;align-items:center;justify-content:center;
  opacity:0;
  pointer-events:none;
  transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,border-color .2s ease,color .2s ease;
  z-index:60;
}
.to-top.is-show{opacity:1;pointer-events:auto;transform:translateY(0);}
.to-top:hover{border-color:var(--neon);color:var(--neon);}

/* roulang page: article */
:root{
    --bg:#0C0B12;
    --bg-alt:#14121D;
    --card:#1C1A28;
    --line:rgba(255,255,255,.08);
    --line-strong:rgba(255,255,255,.16);
    --text:#F2F1F7;
    --text-2:#A9A6BC;
    --text-3:#6E6B80;
    --primary:#22E3AE;
    --primary-ink:#052620;
    --primary-12:rgba(34,227,174,.12);
    --primary-30:rgba(34,227,174,.30);
    --accent:#FF8A3D;
    --danger:#FF6B6B;
    --r-card:16px;
    --r-pill:999px;
    --r-field:12px;
    --r-img:14px;
    --shadow-hover:0 14px 32px rgba(0,0,0,.45), 0 0 0 1px rgba(34,227,174,.18);
    --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  }

  *,*::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:var(--font);font-size:16px;line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;height:auto}
  a{color:inherit;text-decoration:none}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  ul,ol{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.32}
  p{margin:0}
  :focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

  .container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
  @media (min-width:768px){ .container{padding:0 32px} }

  /* ---------- Header ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(12,11,18,.92);
    border-bottom:1px solid var(--line);
    backdrop-filter:blur(8px);
    -webkit-backdrop-filter:blur(8px);
  }
  .header-inner{display:flex;align-items:center;gap:24px;height:64px}
  @media (min-width:1024px){ .header-inner{height:72px;gap:32px} }

  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
  .brand-mark{
    width:12px;height:12px;border-radius:50%;
    background:var(--primary);
    box-shadow:0 0 0 4px var(--primary-12);
    flex:0 0 auto;
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.16}
  .brand-text b{font-size:16px;font-weight:700;letter-spacing:.01em;color:var(--text)}
  .brand-text i{font-style:normal;font-size:12px;color:var(--text-3);letter-spacing:.14em}

  .main-nav{display:flex;align-items:center;gap:26px;margin-left:auto}
  .nav-link{
    position:relative;font-size:15px;letter-spacing:.02em;color:var(--text-2);
    padding:6px 0;transition:color .2s ease;
  }
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
    background:var(--primary);transform:scaleX(0);transform-origin:left;
    transition:transform .22s ease;
  }
  .nav-link:hover{color:var(--text)}
  .nav-link:hover::after{transform:scaleX(1)}
  .nav-link.is-active{color:var(--text)}
  .nav-link.is-active::after{transform:scaleX(1)}

  .header-cta{margin-left:8px}

  .nav-toggle{
    margin-left:auto;width:44px;height:44px;border-radius:12px;
    border:1px solid var(--line);display:flex;flex-direction:column;
    align-items:center;justify-content:center;gap:5px;
  }
  .nav-toggle span{display:block;width:18px;height:1.5px;background:var(--text-2);transition:.2s}
  .nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
  .nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
  .nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

  @media (min-width:1024px){ .nav-toggle{display:none} }
  @media (max-width:1023px){ .main-nav,.header-cta{display:none} }

  .drawer-overlay{
    position:fixed;inset:0;background:rgba(0,0,0,.7);z-index:65;
    opacity:0;pointer-events:none;transition:opacity .25s ease;
  }
  .drawer-overlay.is-open{opacity:1;pointer-events:auto}
  .mobile-drawer{
    position:fixed;top:0;right:0;height:100%;width:min(320px,86vw);z-index:70;
    background:var(--bg-alt);border-left:1px solid var(--line);
    transform:translateX(100%);transition:transform .28s ease;
    display:flex;flex-direction:column;padding:88px 24px 28px;
  }
  .mobile-drawer.is-open{transform:translateX(0)}
  .drawer-link{
    display:flex;align-items:center;height:56px;font-size:16px;
    color:var(--text-2);border-bottom:1px solid var(--line);
  }
  .drawer-link:hover{color:var(--primary)}
  .drawer-btn{margin-top:24px;justify-content:center}
  @media (min-width:1024px){ .mobile-drawer,.drawer-overlay{display:none} }

  /* ---------- Buttons & chips ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 24px;border-radius:var(--r-pill);
    font-size:15px;font-weight:600;letter-spacing:.02em;white-space:nowrap;
    transition:transform .18s ease,background-color .2s ease,border-color .2s ease,color .2s ease;
  }
  .btn-primary{background:var(--primary);color:var(--primary-ink)}
  .btn-primary:hover{background:#3BF0BF;transform:translateY(-1px)}
  .btn-primary:active{transform:translateY(0)}
  .btn-ghost{
    border:1px solid var(--primary-30);color:var(--primary);background:transparent;
  }
  .btn-ghost:hover{background:var(--primary-12);border-color:var(--primary)}
  .btn-sm{height:38px;padding:0 18px;font-size:14px}
  .btn-block{width:100%}
  @media (max-width:520px){ .btn-block-sm{width:100%} }

  .chip{
    display:inline-flex;align-items:center;height:26px;padding:0 12px;
    border-radius:var(--r-pill);font-size:12px;letter-spacing:.04em;
    background:var(--primary-12);color:var(--primary);border:1px solid var(--primary-30);
  }
  .badge{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;
    border-radius:var(--r-pill);font-size:12px;letter-spacing:.06em;
    color:var(--accent);border:1px solid rgba(255,138,61,.4);background:rgba(255,138,61,.1);
  }

  /* ---------- Article hero ---------- */
  .article-hero{
    position:relative;overflow:hidden;
    padding:34px 0 34px;
    background:linear-gradient(180deg,#14121D 0%,#0C0B12 100%);
    border-bottom:1px solid var(--line);
  }
  .article-hero::before{
    content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
    background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px);
    background-size:100% 34px;
  }
  .article-hero .container{position:relative;z-index:1}
  @media (min-width:768px){ .article-hero{padding:46px 0 44px} }

  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:13px;color:var(--text-3);margin-bottom:18px;
  }
  .breadcrumb a{color:var(--text-3);transition:color .2s ease}
  .breadcrumb a:hover{color:var(--primary)}
  .bsep{color:var(--text-3);opacity:.6}
  .bcur{color:var(--text-3);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

  .article-title{
    font-size:clamp(27px,4.4vw,44px);
    line-height:1.28;font-weight:800;letter-spacing:-.015em;
    max-width:900px;color:var(--text);
  }
  .article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:20px}
  .meta-item{font-size:13px;color:var(--text-3)}

  /* ---------- Article layout ---------- */
  .article-layout{
    display:grid;grid-template-columns:minmax(0,1fr);
    gap:44px;padding:44px 0 72px;
  }
  @media (min-width:1024px){
    .article-layout{
      grid-template-columns:minmax(0,820px) 300px;
      justify-content:space-between;gap:56px;padding:64px 0 96px;
    }
  }

  .article-panel{
    background:var(--card);border:1px solid var(--line);
    border-radius:var(--r-card);padding:24px 20px;
  }
  @media (min-width:768px){ .article-panel{padding:40px 44px} }

  .prose{color:var(--text-2);font-size:17px;line-height:1.9;word-wrap:break-word}
  .prose > * + *{margin-top:18px}
  .prose h2{
    font-size:24px;line-height:1.4;color:var(--text);font-weight:700;
    letter-spacing:-.01em;margin-top:40px;padding-top:4px;
  }
  @media (min-width:768px){ .prose h2{font-size:26px} }
  .prose h3{font-size:19px;color:var(--text);font-weight:700;margin-top:32px}
  @media (min-width:768px){ .prose h3{font-size:20px} }
  .prose h4{font-size:17px;color:var(--text);font-weight:700;margin-top:26px}
  .prose p{color:var(--text-2)}
  .prose strong{color:var(--text);font-weight:700}
  .prose a{color:var(--primary);border-bottom:1px solid rgba(34,227,174,.35);transition:border-color .2s ease}
  .prose a:hover{border-bottom-color:var(--primary)}
  .prose ul{display:flex;flex-direction:column;gap:8px}
  .prose ul li{position:relative;padding-left:20px}
  .prose ul li::before{
    content:"";position:absolute;left:2px;top:.78em;
    width:7px;height:7px;border-radius:50%;background:var(--primary);
  }
  .prose ol{padding-left:22px;list-style:decimal;display:flex;flex-direction:column;gap:8px}
  .prose ol li{padding-left:4px}
  .prose ol li::marker{color:var(--primary);font-weight:700}
  .prose blockquote{
    margin:24px 0;padding:16px 20px;border-left:3px solid var(--primary);
    background:var(--primary-12);border-radius:0 var(--r-field) var(--r-field) 0;color:var(--text-2);
  }
  .prose blockquote p{color:var(--text-2)}
  .prose img{border-radius:var(--r-img);margin:24px auto;width:100%}
  .prose figure{margin:24px 0}
  .prose figcaption{text-align:center;font-size:13px;color:var(--text-3);margin-top:10px}
  .prose table{width:100%;border-collapse:collapse;font-size:15px;display:block;overflow-x:auto}
  .prose th,.prose td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
  .prose th{background:rgba(255,255,255,.06);color:var(--text);font-weight:600;white-space:nowrap}
  .prose hr{border:0;border-top:1px solid var(--line);margin:32px 0}
  .prose code{
    background:rgba(255,255,255,.06);border:1px solid var(--line);
    border-radius:6px;padding:2px 6px;font-size:14px;color:var(--primary);
  }

  .empty-state{
    text-align:center;padding:52px 20px;border:1px dashed var(--line-strong);
    border-radius:var(--r-card);background:rgba(255,255,255,.02);
  }
  .empty-state h2{font-size:22px;color:var(--text);margin-bottom:12px}
  .empty-state p{color:var(--text-2);font-size:15px;max-width:520px;margin:0 auto 24px}

  /* ---------- Sidebar ---------- */
  .article-sidebar{display:flex;flex-direction:column;gap:22px}
  @media (min-width:1024px){
    .article-sidebar{position:sticky;top:100px;align-self:start}
  }
  .side-card{
    background:var(--card);border:1px solid var(--line);
    border-radius:var(--r-card);padding:22px;
  }
  .side-title{font-size:16px;color:var(--text);margin-bottom:6px}
  .side-list{display:flex;flex-direction:column;margin-top:8px}
  .side-list li{border-top:1px solid var(--line)}
  .side-list li:first-child{border-top:0}
  .side-list a{display:block;padding:14px 0;transition:transform .2s ease}
  .side-list a span{display:block;font-size:15px;color:var(--text);transition:color .2s ease}
  .side-list a i{display:block;font-style:normal;font-size:13px;color:var(--text-3);margin-top:4px;line-height:1.6}
  .side-list a:hover span{color:var(--primary)}
  .side-list a:hover{transform:translateX(3px)}

  .side-cta{background:linear-gradient(180deg,rgba(34,227,174,.08),rgba(28,26,40,1))}
  .side-cta h3{font-size:17px;color:var(--text);margin:12px 0 10px}
  .side-cta p{font-size:14px;color:var(--text-2);line-height:1.8;margin-bottom:18px}

  /* ---------- Sections ---------- */
  .section{padding:56px 0}
  @media (min-width:768px){ .section{padding:88px 0} }
  .section-head{
    display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
    gap:14px;margin-bottom:26px;
  }
  .section-head h2{font-size:24px;color:var(--text)}
  @media (min-width:768px){ .section-head h2{font-size:30px} }
  .link-more{font-size:14px;color:var(--primary);border-bottom:1px solid var(--primary-30);padding-bottom:2px}
  .link-more:hover{border-bottom-color:var(--primary)}

  .card-grid-3{display:grid;grid-template-columns:1fr;gap:16px}
  @media (min-width:640px){ .card-grid-3{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px} }
  @media (min-width:1024px){ .card-grid-3{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px} }

  .post-card{
    display:flex;flex-direction:column;background:var(--card);
    border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
    transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
  }
  .post-card:hover{transform:translateY(-4px);border-color:var(--primary-30);box-shadow:var(--shadow-hover)}
  .post-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-alt)}
  .post-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
  .post-card:hover .post-media img{transform:scale(1.04)}
  .post-tag{
    position:absolute;left:12px;top:12px;height:24px;padding:0 10px;
    display:inline-flex;align-items:center;border-radius:var(--r-pill);
    font-size:12px;background:rgba(12,11,18,.78);color:var(--primary);
    border:1px solid var(--primary-30);
  }
  .post-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
  .post-body h3{font-size:18px;color:var(--text);line-height:1.5}
  .post-body p{font-size:14px;color:var(--text-2);line-height:1.75}
  .post-foot{
    margin-top:auto;display:flex;align-items:center;justify-content:space-between;
    padding-top:12px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);
  }
  .post-foot .arrow{color:var(--primary);transition:transform .2s ease}
  .post-card:hover .post-foot .arrow{transform:translateX(4px)}

  /* ---------- CTA band ---------- */
  .cta-band{
    position:relative;overflow:hidden;
    background:linear-gradient(180deg,rgba(34,227,174,.09),rgba(20,18,29,.6)),var(--bg-alt);
    border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    padding:48px 0;
  }
  .cta-band::after{
    content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
    background-image:linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
    background-size:48px 100%;
  }
  .cta-inner{
    position:relative;z-index:1;display:flex;flex-direction:column;
    gap:22px;align-items:flex-start;
  }
  @media (min-width:768px){
    .cta-band{padding:64px 0}
    .cta-inner{flex-direction:row;align-items:center;justify-content:space-between}
  }
  .cta-inner h2{font-size:24px;color:var(--text);margin-bottom:10px}
  @media (min-width:768px){ .cta-inner h2{font-size:30px} }
  .cta-inner p{font-size:15px;color:var(--text-2);max-width:620px}

  /* ---------- Footer ---------- */
  .site-footer{border-top:1px solid var(--line);background:var(--bg);padding:56px 0 28px;margin-top:0}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
  @media (min-width:768px){ .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px} }
  .footer-brand p{margin-top:16px;font-size:14px;color:var(--text-3);line-height:1.85;max-width:340px}
  .footer-col h4{font-size:14px;color:var(--text);letter-spacing:.06em;margin-bottom:16px}
  .footer-col ul{display:flex;flex-direction:column;gap:11px}
  .footer-col a,.footer-col span{font-size:14px;color:var(--text-2);line-height:1.7;transition:color .2s ease}
  .footer-col a:hover{color:var(--primary)}
  .footer-bottom{
    margin-top:40px;padding-top:22px;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    font-size:13px;color:var(--text-3);
  }

  /* ---------- To top ---------- */
  .to-top{
    position:fixed;right:20px;bottom:20px;z-index:60;
    width:48px;height:48px;border-radius:50%;display:grid;place-items:center;
    background:var(--card);border:1px solid var(--line);color:var(--primary);
    opacity:0;pointer-events:none;transition:opacity .25s ease,transform .25s ease;
  }
  .to-top.is-visible{opacity:1;pointer-events:auto}
  .to-top:hover{transform:translateY(-3px);border-color:var(--primary-30)}
  @media (min-width:768px){ .to-top{right:32px;bottom:32px} }

  .no-scrollbar{-ms-overflow-style:none;scrollbar-width:none}
  .no-scrollbar::-webkit-scrollbar{display:none}

/* roulang page: category1 */
:root{
    --bg:#0C0B12;
    --bg-alt:#14121D;
    --card:#1C1A28;
    --line:rgba(255,255,255,.08);
    --line-strong:rgba(255,255,255,.16);
    --primary:#2FF0C0;
    --primary-soft:rgba(47,240,192,.12);
    --primary-line:rgba(47,240,192,.4);
    --accent:#FF7A2F;
    --text:#F2F1F7;
    --muted:#A9A6BC;
    --weak:#6E6B80;
    --danger:#FF6B6B;
    --radius:16px;
    --radius-sm:12px;
    --pill:999px;
    --shadow:0 14px 32px rgba(0,0,0,.45);
    --glow:0 14px 32px rgba(0,0,0,.45), 0 0 26px rgba(47,240,192,.18);
    --container:1240px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body.site-body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
    font-size:16px;
    line-height:1.85;
    letter-spacing:.01em;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  body.site-body img{max-width:100%;display:block;}
  body.site-body a{color:inherit;text-decoration:none;}
  body.site-body button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  body.site-body h1,body.site-body h2,body.site-body h3,body.site-body h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.3;}
  body.site-body p{margin:0;}
  body.site-body ul{margin:0;padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
  @media (min-width:768px){.container{padding:0 32px;}}

  .skip-link{position:absolute;left:-9999px;top:0;background:var(--primary);color:#06231C;padding:10px 16px;border-radius:0 0 12px 0;z-index:200;}
  .skip-link:focus{left:0;}

  /* ============ 顶部导航 ============ */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(12,11,18,.86);
    border-bottom:1px solid var(--line);
    transition:background .25s ease, backdrop-filter .25s ease;
  }
  .site-header.is-scrolled{background:rgba(12,11,18,.92);backdrop-filter:blur(8px);}
  .nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:64px;}
  @media (min-width:1024px){.nav-inner{min-height:72px;}}

  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .brand-mark{width:10px;height:10px;border-radius:3px;background:var(--primary);box-shadow:0 0 12px rgba(47,240,192,.65);animation:dotPulse 2.6s ease-in-out infinite;}
  @keyframes dotPulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.55;transform:scale(.86);}}
  .brand-text{display:flex;flex-direction:column;line-height:1.12;}
  .brand-text b{font-size:16px;font-weight:800;letter-spacing:.01em;}
  .brand-text i{font-style:normal;font-size:11.5px;color:var(--muted);letter-spacing:.2em;text-transform:none;}
  @media (min-width:768px){.brand-text b{font-size:17px;}}

  .main-nav{display:none;align-items:center;gap:26px;}
  @media (min-width:1024px){.main-nav{display:flex;}}
  .nav-link{position:relative;font-size:14.5px;letter-spacing:.02em;color:var(--muted);padding:6px 0;transition:color .2s ease;}
  .nav-link:hover{color:var(--primary);}
  .nav-link.is-active{color:var(--text);}
  .nav-link.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;background:var(--primary);}

  .nav-actions{display:flex;align-items:center;gap:10px;}
  .nav-actions .btn{display:none;}
  @media (min-width:1024px){.nav-actions .btn{display:inline-flex;}}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:12px;border:1px solid var(--line-strong);color:var(--text);transition:border-color .2s ease,color .2s ease;}
  .nav-toggle:hover{border-color:var(--primary-line);color:var(--primary);}
  @media (min-width:1024px){.nav-toggle{display:none;}}
  .nav-toggle span{position:relative;width:16px;height:1.5px;background:currentColor;border-radius:2px;}
  .nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:16px;height:1.5px;background:currentColor;border-radius:2px;}
  .nav-toggle span::before{top:-5px;}
  .nav-toggle span::after{top:5px;}

  .drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.7);opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:70;}
  .drawer-mask.is-open{opacity:1;pointer-events:auto;}
  .nav-drawer{
    position:fixed;top:0;right:0;height:100%;width:min(86vw,340px);
    background:var(--bg-alt);border-left:1px solid var(--line);
    transform:translateX(102%);transition:transform .28s ease;z-index:80;
    padding:20px 22px 28px;display:flex;flex-direction:column;
  }
  .nav-drawer.is-open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);}
  .drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line-strong);display:inline-flex;align-items:center;justify-content:center;color:var(--muted);}
  .drawer-close:hover{color:var(--primary);border-color:var(--primary-line);}
  .drawer-link{display:flex;align-items:center;min-height:56px;font-size:16px;color:var(--muted);border-bottom:1px solid var(--line);transition:color .2s ease,padding-left .2s ease;}
  .drawer-link:hover{color:var(--primary);padding-left:6px;}
  .drawer-link.is-active{color:var(--primary);}
  .drawer-cta{margin-top:auto;}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 24px;border-radius:var(--pill);
    font-size:15px;font-weight:600;border:1px solid transparent;
    transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
    white-space:nowrap;
  }
  .btn-primary{background:var(--primary);color:#06231C;}
  .btn-primary:hover{background:#5BF6D0;transform:translateY(-1px);box-shadow:0 10px 26px rgba(47,240,192,.24);}
  .btn-primary:active{transform:translateY(0) scale(.99);}
  .btn-ghost{border-color:var(--primary-line);color:var(--primary);background:transparent;}
  .btn-ghost:hover{background:rgba(47,240,192,.1);}
  .btn-quiet{border-color:var(--line-strong);color:var(--text);background:transparent;border-radius:var(--radius-sm);}
  .btn-quiet:hover{border-color:var(--primary-line);color:var(--primary);}
  .btn-sm{height:38px;padding:0 18px;font-size:14px;}

  /* ============ 分类矮横幅 ============ */
  .cat-banner{position:relative;overflow:hidden;min-height:320px;display:flex;align-items:flex-end;padding:56px 0 40px;background:var(--bg-alt);}
  .cat-banner-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;opacity:.32;}
  .cat-banner::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,11,18,.68) 0%,rgba(12,11,18,.9) 58%,var(--bg) 100%);}
  .cat-banner-inner{position:relative;z-index:2;width:100%;}
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--weak);margin-bottom:18px;}
  .breadcrumb a{color:var(--weak);transition:color .2s ease;}
  .breadcrumb a:hover{color:var(--primary);}
  .breadcrumb .current{color:var(--muted);}
  .cat-banner h1{font-size:clamp(26px,4.2vw,44px);font-weight:800;line-height:1.24;max-width:900px;}
  .cat-banner h1 em{font-style:normal;color:var(--primary);}
  .cat-banner .lead{margin-top:16px;font-size:16px;color:var(--muted);max-width:640px;}
  .chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
  .chip{
    display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:var(--pill);
    font-size:13px;color:var(--muted);border:1px solid var(--line-strong);background:transparent;
    transition:color .2s ease,border-color .2s ease,background .2s ease;
  }
  .chip:hover{color:var(--primary);border-color:var(--primary-line);}
  .chip.is-active{color:var(--primary);border-color:var(--primary-line);background:var(--primary-soft);}
  .banner-metrics{display:flex;flex-wrap:wrap;gap:0 28px;margin-top:30px;padding-top:20px;border-top:1px solid var(--line);}
  .metric{display:flex;flex-direction:column;padding-right:28px;border-right:1px solid var(--line);}
  .metric:last-child{border-right:0;padding-right:0;}
  .metric b{font-size:15px;font-weight:700;color:var(--text);}
  .metric span{font-size:12.5px;color:var(--weak);letter-spacing:.06em;}
  @media (max-width:640px){
    .banner-metrics{gap:14px 20px;}
    .metric{width:auto;border-right:0;padding-right:0;}
  }

  /* ============ 板块通用 ============ */
  .section{padding:56px 0;}
  @media (min-width:1024px){.section{padding:90px 0;}}
  .section-alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:26px;}
  .section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;}
  .section-head h2 em{font-style:normal;color:var(--primary);}
  .section-sub{margin-top:8px;font-size:14.5px;color:var(--muted);max-width:620px;}
  .link-more{font-size:14px;color:var(--primary);display:inline-flex;align-items:center;gap:6px;transition:gap .2s ease;}
  .link-more:hover{gap:10px;}

  /* ============ 横滑卡轨 ============ */
  .rail-wrap{position:relative;}
  .rail{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 4px 14px;scrollbar-width:none;-ms-overflow-style:none;}
  .rail::-webkit-scrollbar{display:none;}
  .rail-card{flex:0 0 auto;width:78%;max-width:300px;scroll-snap-align:start;}
  @media (min-width:768px){.rail-card{width:44%;}}
  @media (min-width:1024px){.rail-card{width:31%;}}
  @media (min-width:1280px){.rail-card{width:23.2%;}}
  .rail-nav{display:none;gap:10px;}
  @media (min-width:768px){.rail-nav{display:flex;}}
  .rail-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--line-strong);color:var(--muted);display:inline-flex;align-items:center;justify-content:center;transition:color .2s ease,border-color .2s ease,background .2s ease;}
  .rail-btn:hover{color:var(--primary);border-color:var(--primary-line);background:rgba(47,240,192,.08);}

  /* ============ 卡片 ============ */
  .b-card{
    display:flex;flex-direction:column;height:100%;
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
    transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
  }
  .b-card:hover{transform:translateY(-4px);border-color:rgba(47,240,192,.3);box-shadow:var(--glow);}
  .thumb{position:relative;overflow:hidden;background:#0A0910;aspect-ratio:16/9;}
  .thumb.tall{aspect-ratio:3/4;}
  .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
  .b-card:hover .thumb img{transform:scale(1.04);}
  .thumb .corner{position:absolute;top:12px;left:12px;font-size:11.5px;letter-spacing:.08em;padding:3px 10px;border-radius:var(--pill);background:rgba(255,122,47,.16);color:var(--accent);border:1px solid rgba(255,122,47,.4);}
  .card-body{display:flex;flex-direction:column;gap:10px;padding:16px 18px 18px;}
  .tag{align-self:flex-start;font-size:12px;letter-spacing:.06em;color:var(--primary);background:var(--primary-soft);border-radius:var(--pill);padding:3px 10px;}
  .card-body h3{font-size:17.5px;font-weight:700;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .card-body p{font-size:14.5px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
  .card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:8px;border-top:1px solid var(--line);}
  .card-foot .meta{font-size:12.5px;color:var(--weak);}
  .card-foot .arrow{color:var(--primary);font-size:15px;transition:transform .2s ease;}
  .b-card:hover .card-foot .arrow{transform:translateX(4px);}

  /* ============ 网格 ============ */
  .grid-cards{display:grid;gap:16px;grid-template-columns:1fr;}
  @media (min-width:640px){.grid-cards{grid-template-columns:repeat(2,1fr);gap:20px;}}
  @media (min-width:1024px){.grid-cards{grid-template-columns:repeat(3,1fr);gap:24px;}}

  /* ============ 分类互链 ============ */
  .cross-grid{display:grid;gap:16px;grid-template-columns:1fr;}
  @media (min-width:768px){.cross-grid{grid-template-columns:repeat(2,1fr);gap:24px;}}
  .cross-card{
    position:relative;display:flex;flex-direction:column;justify-content:flex-end;
    min-height:230px;padding:24px;border-radius:var(--radius);overflow:hidden;
    border:1px solid var(--line);transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
  }
  .cross-card:hover{transform:translateY(-4px);border-color:rgba(47,240,192,.3);box-shadow:var(--glow);}
  .cross-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.34;transition:transform .35s ease;}
  .cross-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,18,29,.4) 0%,rgba(12,11,18,.94) 78%);}
  .cross-card:hover .cross-bg{transform:scale(1.05);}
  .cross-inner{position:relative;z-index:2;}
  .cross-inner h3{font-size:20px;font-weight:800;}
  .cross-inner p{margin-top:8px;font-size:14.5px;color:var(--muted);max-width:420px;}
  .cross-link{margin-top:16px;display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--primary);}

  /* ============ CTA 条带 ============ */
  .cta-band{position:relative;overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:linear-gradient(180deg,rgba(47,240,192,.09) 0%,rgba(47,240,192,.02) 100%);}
  .cta-band::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:52px 52px;opacity:.5;}
  .cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;padding:48px 0;}
  @media (min-width:1024px){.cta-inner{padding:64px 0;}}
  .cta-inner h2{font-size:clamp(21px,2.5vw,28px);font-weight:800;}
  .cta-inner p{margin-top:8px;font-size:14.5px;color:var(--muted);max-width:560px;}

  /* ============ FAQ ============ */
  .faq-list{max-width:860px;margin:0 auto;border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;text-align:left;padding:22px 0;font-size:17.5px;font-weight:600;color:var(--text);transition:color .2s ease;}
  .faq-q:hover{color:var(--primary);}
  .faq-item.is-open .faq-q{color:var(--primary);}
  .faq-icon{flex:0 0 auto;position:relative;width:22px;height:22px;margin-top:4px;transition:transform .2s ease;}
  .faq-icon::before,.faq-icon::after{content:"";position:absolute;background:currentColor;border-radius:2px;}
  .faq-icon::before{left:0;top:10px;width:22px;height:2px;}
  .faq-icon::after{left:10px;top:0;width:2px;height:22px;}
  .faq-item.is-open .faq-icon{transform:rotate(45deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;}
  .faq-a p{padding:0 0 22px;font-size:15.5px;color:var(--muted);max-width:760px;}

  /* ============ 页脚 ============ */
  .site-footer{background:var(--bg);border-top:1px solid var(--line);margin-top:0;padding-top:56px;}
  .footer-grid{display:grid;gap:32px;grid-template-columns:1fr;}
  @media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;}}
  .footer-brand p{margin-top:14px;font-size:14px;color:var(--muted);max-width:340px;}
  .footer-col h4{font-size:14px;font-weight:700;letter-spacing:.08em;color:var(--text);margin-bottom:16px;}
  .footer-col ul li{margin-bottom:10px;}
  .footer-col ul li a{font-size:14px;color:var(--muted);transition:color .2s ease;}
  .footer-col ul li a:hover{color:var(--primary);}
  .footer-col ul li span{font-size:14px;color:var(--weak);}
  .footer-bottom{margin-top:44px;padding:22px 0 30px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:var(--weak);}

  .to-top{
    position:fixed;right:20px;bottom:24px;width:48px;height:48px;border-radius:50%;
    background:var(--card);border:1px solid var(--line-strong);color:var(--muted);
    display:inline-flex;align-items:center;justify-content:center;z-index:50;
    opacity:0;pointer-events:none;transform:translateY(10px);
    transition:opacity .25s ease,transform .25s ease,color .2s ease,border-color .2s ease;
  }
  .to-top.is-visible{opacity:1;pointer-events:auto;transform:translateY(0);}
  .to-top:hover{color:var(--primary);border-color:var(--primary-line);}

/* roulang page: category2 */
:root{
    --bg:#141210;
    --bg-2:#1B1815;
    --bg-3:#231F1A;
    --line:rgba(243,237,226,.10);
    --line-2:rgba(243,237,226,.18);
    --ink:#F3EDE2;
    --ink-2:#B6AC9D;
    --ink-3:#7E7466;
    --brand:#5FBF9E;
    --brand-soft:rgba(95,191,158,.12);
    --brand-line:rgba(95,191,158,.42);
    --amber:#E08A3C;
    --danger:#FF6B6B;
    --radius-card:10px;
    --radius-btn:6px;
    --radius-pill:999px;
    --shadow-hover:0 14px 32px rgba(0,0,0,.45), 0 0 0 1px rgba(95,191,158,.28);
    --ease:200ms ease;
  }

  *,*::before,*::after{box-sizing:border-box;}

  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    letter-spacing:.01em;
    overflow-x:hidden;
  }

  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;border:none;background:none;cursor:pointer;color:inherit;}
  h1,h2,h3,h4,p,ul,ol{margin:0;padding:0;}
  ul,ol{list-style:none;}
  h1,h2,h3,h4{font-weight:700;letter-spacing:-.01em;line-height:1.28;}

  a:focus-visible,
  button:focus-visible,
  .chip:focus-visible,
  input:focus-visible{
    outline:2px solid var(--brand);
    outline-offset:2px;
    border-radius:4px;
  }

  .container{
    width:100%;
    max-width:1240px;
    margin:0 auto;
    padding:0 20px;
  }

  /* ============ 顶部导航 ============ */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(20,18,15,.86);
    border-bottom:1px solid var(--line);
    transition:background var(--ease), backdrop-filter var(--ease);
  }
  .site-header.is-scrolled{
    background:rgba(20,18,15,.94);
    backdrop-filter:blur(8px);
  }
  .header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    min-height:64px;
  }
  .brand{
    display:flex;
    align-items:center;
    gap:10px;
    flex-shrink:0;
  }
  .brand-mark{
    width:12px;
    height:26px;
    border-radius:3px;
    background:linear-gradient(180deg,var(--brand),rgba(95,191,158,.25));
    border:1px solid var(--brand-line);
  }
  .brand-text{
    display:flex;
    flex-direction:column;
    line-height:1.15;
    font-size:16px;
    font-weight:700;
    letter-spacing:.02em;
  }
  .brand-text i{
    font-style:normal;
    font-size:12px;
    font-weight:400;
    color:var(--ink-3);
    letter-spacing:.14em;
  }
  .main-nav{
    display:flex;
    align-items:center;
    gap:30px;
  }
  .nav-link{
    position:relative;
    font-size:15px;
    color:var(--ink-2);
    letter-spacing:.02em;
    padding:6px 0;
    transition:color var(--ease);
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:0;
    right:0;
    bottom:-6px;
    height:2px;
    background:var(--brand);
    transform:scaleX(0);
    transform-origin:left;
    transition:transform var(--ease);
  }
  .nav-link:hover{color:var(--ink);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.is-active{color:var(--ink);font-weight:600;}
  .nav-link.is-active::after{transform:scaleX(1);}

  .nav-cta{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    height:44px;
    padding:0 24px;
    border-radius:var(--radius-pill);
    background:var(--brand);
    color:#0E1512;
    font-size:15px;
    font-weight:700;
    letter-spacing:.02em;
    transition:transform var(--ease), background var(--ease), box-shadow var(--ease);
    white-space:nowrap;
  }
  .nav-cta:hover{background:#74d0b1;transform:translateY(-1px);box-shadow:0 8px 20px rgba(95,191,158,.25);}
  .nav-cta:active{transform:translateY(0);}

  .nav-toggle{
    display:none;
    width:42px;
    height:42px;
    border:1px solid var(--line-2);
    border-radius:var(--radius-btn);
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:5px;
  }
  .nav-toggle span{
    display:block;
    width:18px;
    height:1.5px;
    background:var(--ink);
    transition:transform var(--ease), opacity var(--ease);
  }
  .nav-toggle.is-open span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
  .nav-toggle.is-open span:nth-child(2){opacity:0;}
  .nav-toggle.is-open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}

  .nav-mask{
    position:fixed;
    inset:0;
    background:rgba(0,0,0,.7);
    opacity:0;
    visibility:hidden;
    transition:opacity var(--ease), visibility var(--ease);
    z-index:70;
  }
  .nav-mask.is-open{opacity:1;visibility:visible;}

  .nav-drawer{
    position:fixed;
    top:0;
    right:0;
    width:min(320px,84vw);
    height:100%;
    background:var(--bg-2);
    border-left:1px solid var(--line);
    transform:translateX(100%);
    transition:transform var(--ease);
    z-index:80;
    padding:84px 0 32px;
    display:flex;
    flex-direction:column;
    overflow-y:auto;
  }
  .nav-drawer.is-open{transform:translateX(0);}
  .nav-drawer a{
    display:flex;
    align-items:center;
    min-height:56px;
    padding:0 26px;
    font-size:16px;
    color:var(--ink-2);
    border-bottom:1px solid var(--line);
    transition:color var(--ease), background var(--ease);
  }
  .nav-drawer a:hover,.nav-drawer a.is-active{color:var(--brand);background:rgba(95,191,158,.06);}
  .drawer-cta{
    margin:26px 26px 0;
    justify-content:center;
    background:var(--brand);
    color:#0E1512 !important;
    border-radius:var(--radius-pill);
    min-height:48px !important;
    font-weight:700;
    border-bottom:none !important;
  }
  .drawer-cta:hover{background:#74d0b1;color:#0E1512 !important;}

  /* ============ 矮横幅 ============ */
  .page-banner{
    position:relative;
    min-height:320px;
    display:flex;
    align-items:flex-end;
    padding:72px 0 44px;
    background-image:
      linear-gradient(180deg, rgba(20,18,15,.55) 0%, rgba(20,18,15,.88) 55%, var(--bg) 100%),
      linear-gradient(90deg, rgba(20,18,15,.9) 0%, rgba(20,18,15,.35) 60%),
      url("/assets/images/backpic/back-2.webp");
    background-size:cover;
    background-position:center;
    border-bottom:1px solid var(--line);
  }
  .banner-inner{max-width:860px;}
  .crumb{
    display:flex;
    align-items:center;
    gap:10px;
    font-size:13px;
    color:var(--ink-3);
    margin-bottom:18px;
  }
  .crumb a{color:var(--ink-2);transition:color var(--ease);}
  .crumb a:hover{color:var(--brand);}
  .crumb .sep{color:var(--ink-3);}
  .crumb .current{color:var(--ink-3);}

  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    height:28px;
    padding:0 14px;
    border:1px solid var(--brand-line);
    border-radius:var(--radius-pill);
    font-size:12px;
    letter-spacing:.16em;
    color:var(--brand);
    background:rgba(95,191,158,.06);
    margin-bottom:20px;
  }
  .page-banner h1{
    font-size:clamp(28px,4.6vw,44px);
    font-weight:800;
    line-height:1.25;
    margin-bottom:16px;
  }
  .page-banner h1 em{
    font-style:normal;
    color:var(--brand);
  }
  .banner-desc{
    font-size:17px;
    color:var(--ink-2);
    max-width:640px;
  }

  .chip-row{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    margin-top:26px;
  }
  .chip{
    display:inline-flex;
    align-items:center;
    height:34px;
    padding:0 16px;
    border-radius:var(--radius-pill);
    border:1px solid var(--line-2);
    background:rgba(243,237,226,.03);
    color:var(--ink-2);
    font-size:13px;
    letter-spacing:.02em;
  }
  .chip.is-active{
    border-color:var(--brand-line);
    background:var(--brand-soft);
    color:var(--brand);
  }

  /* ============ 区块基础 ============ */
  .section{padding:88px 0;}
  .section.tight{padding:64px 0;}
  .section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:24px;
    margin-bottom:32px;
    padding-bottom:20px;
    border-bottom:1px solid var(--line);
  }
  .section-head h2{
    font-size:clamp(22px,3vw,30px);
    font-weight:700;
  }
  .section-head h2 span{color:var(--brand);}
  .section-head p{
    color:var(--ink-3);
    font-size:14px;
    max-width:520px;
    margin-top:10px;
  }
  .section-link{
    font-size:14px;
    color:var(--brand);
    border-bottom:1px solid var(--brand-line);
    padding-bottom:3px;
    white-space:nowrap;
    transition:color var(--ease), border-color var(--ease);
  }
  .section-link:hover{color:#8adcbe;border-color:#8adcbe;}

  /* ============ 左图右文长列表 ============ */
  .log-list{
    display:flex;
    flex-direction:column;
    gap:18px;
  }
  .log-item{
    display:flex;
    gap:22px;
    padding:18px;
    background:var(--bg-2);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    transition:transform var(--ease), border-color var(--ease), box-shadow var(--ease);
  }
  .log-item:hover{
    transform:translateY(-3px);
    border-color:var(--brand-line);
    box-shadow:var(--shadow-hover);
  }
  .log-thumb{
    position:relative;
    flex:0 0 240px;
    width:240px;
    height:150px;
    border-radius:8px;
    overflow:hidden;
    border:1px solid var(--line);
    background:var(--bg-3);
  }
  .log-thumb img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform 320ms ease;
  }
  .log-item:hover .log-thumb img{transform:scale(1.04);}
  .log-index{
    position:absolute;
    left:10px;
    top:10px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    min-width:34px;
    height:22px;
    padding:0 8px;
    border-radius:4px;
    background:rgba(20,18,15,.82);
    border:1px solid var(--line-2);
    font-size:12px;
    letter-spacing:.06em;
    color:var(--brand);
  }
  .log-body{
    flex:1;
    min-width:0;
    display:flex;
    flex-direction:column;
    gap:10px;
    padding:2px 0;
  }
  .log-body h3{
    font-size:19px;
    font-weight:700;
    line-height:1.4;
  }
  .log-body p{
    font-size:15px;
    color:var(--ink-2);
    line-height:1.8;
  }
  .tag-row{
    display:flex;
    flex-wrap:wrap;
    gap:8px;
    margin-top:auto;
    padding-top:8px;
  }
  .tag{
    display:inline-flex;
    align-items:center;
    height:24px;
    padding:0 10px;
    border-radius:4px;
    font-size:12px;
    letter-spacing:.04em;
    color:var(--brand);
    background:var(--brand-soft);
    border:1px solid rgba(95,191,158,.20);
  }
  .tag.warm{
    color:var(--amber);
    background:rgba(224,138,60,.10);
    border-color:rgba(224,138,60,.24);
  }

  /* ============ 编号清单 ============ */
  .checklist-section{
    background:var(--bg-2);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .checklist{
    display:grid;
    grid-template-columns:repeat(5,1fr);
    gap:18px;
  }
  .check-item{
    padding:24px 20px;
    background:var(--bg-3);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    transition:border-color var(--ease), transform var(--ease);
  }
  .check-item:hover{border-color:var(--brand-line);transform:translateY(-3px);}
  .check-num{
    display:block;
    font-size:26px;
    font-weight:800;
    color:var(--brand);
    letter-spacing:-.02em;
    margin-bottom:12px;
    font-variant-numeric:tabular-nums;
  }
  .check-item h3{
    font-size:16px;
    margin-bottom:8px;
  }
  .check-item p{
    font-size:14px;
    color:var(--ink-3);
    line-height:1.8;
  }

  /* ============ 分类互链 ============ */
  .cross-grid{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:22px;
  }
  .cross-card{
    position:relative;
    display:flex;
    align-items:flex-end;
    min-height:200px;
    padding:24px;
    border-radius:var(--radius-card);
    border:1px solid var(--line);
    overflow:hidden;
    background:var(--bg-3);
    transition:border-color var(--ease), transform var(--ease), box-shadow var(--ease);
  }
  .cross-card img{
    position:absolute;
    inset:0;
    width:100%;
    height:100%;
    object-fit:cover;
    opacity:.36;
    transition:transform 320ms ease, opacity var(--ease);
  }
  .cross-card::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(180deg, rgba(20,18,15,.2) 0%, rgba(20,18,15,.92) 78%);
  }
  .cross-card:hover{
    border-color:var(--brand-line);
    transform:translateY(-4px);
    box-shadow:var(--shadow-hover);
  }
  .cross-card:hover img{transform:scale(1.05);opacity:.5;}
  .cross-content{position:relative;z-index:2;}
  .cross-content h3{font-size:20px;margin-bottom:8px;}
  .cross-content p{font-size:14px;color:var(--ink-2);max-width:420px;}
  .cross-arrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    margin-top:14px;
    font-size:13px;
    color:var(--brand);
  }

  /* ============ CTA 条带 ============ */
  .cta-band{
    position:relative;
    padding:64px 0;
    background:
      linear-gradient(90deg, rgba(95,191,158,.10) 0%, rgba(95,191,158,.02) 100%),
      repeating-linear-gradient(90deg, rgba(243,237,226,.05) 0 1px, transparent 1px 56px),
      var(--bg-2);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .cta-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:32px;
    flex-wrap:wrap;
  }
  .cta-inner h2{font-size:clamp(20px,2.6vw,26px);margin-bottom:8px;}
  .cta-inner p{font-size:15px;color:var(--ink-2);}
  .btn-primary{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    height:48px;
    padding:0 30px;
    border-radius:var(--radius-pill);
    background:var(--brand);
    color:#0E1512;
    font-size:15px;
    font-weight:700;
    letter-spacing:.02em;
    transition:background var(--ease), transform var(--ease), box-shadow var(--ease);
    white-space:nowrap;
  }
  .btn-primary:hover{background:#79d4b5;transform:translateY(-2px);box-shadow:0 10px 24px rgba(95,191,158,.24);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    height:48px;
    padding:0 28px;
    border-radius:var(--radius-pill);
    border:1px solid var(--brand-line);
    background:transparent;
    color:var(--brand);
    font-size:15px;
    font-weight:600;
    transition:background var(--ease), color var(--ease), transform var(--ease);
    white-space:nowrap;
  }
  .btn-ghost:hover{background:var(--brand-soft);transform:translateY(-2px);}

  /* ============ FAQ ============ */
  .faq-wrap{max-width:860px;margin:0 auto;}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    width:100%;
    padding:24px 0;
    text-align:left;
    font-size:17px;
    font-weight:600;
    color:var(--ink);
    transition:color var(--ease);
  }
  .faq-q:hover{color:var(--brand);}
  .faq-item.is-open .faq-q{color:var(--brand);}
  .faq-icon{
    position:relative;
    flex:0 0 20px;
    width:20px;
    height:20px;
  }
  .faq-icon::before,
  .faq-icon::after{
    content:"";
    position:absolute;
    left:50%;
    top:50%;
    background:currentColor;
    transform:translate(-50%,-50%);
    transition:transform var(--ease), opacity var(--ease);
  }
  .faq-icon::before{width:14px;height:1.6px;}
  .faq-icon::after{width:1.6px;height:14px;}
  .faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
  .faq-a{
    max-height:0;
    overflow:hidden;
    transition:max-height 240ms ease;
  }
  .faq-a p{
    padding:0 40px 26px 0;
    font-size:15.5px;
    color:var(--ink-2);
    line-height:1.85;
  }

  /* ============ 页脚 ============ */
  .site-footer{
    border-top:1px solid var(--line);
    background:var(--bg-2);
    padding:64px 0 28px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.6fr 1fr 1fr 1.2fr;
    gap:40px;
  }
  .footer-brand p{
    margin-top:18px;
    font-size:14px;
    color:var(--ink-3);
    line-height:1.85;
    max-width:400px;
  }
  .footer-col h4{
    font-size:14px;
    letter-spacing:.1em;
    color:var(--ink);
    margin-bottom:18px;
  }
  .footer-col ul li{margin-bottom:12px;}
  .footer-col ul li a,
  .footer-col ul li span{
    font-size:14px;
    color:var(--ink-2);
    transition:color var(--ease);
  }
  .footer-col ul li a:hover{color:var(--brand);}
  .footer-bottom{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    flex-wrap:wrap;
    margin-top:48px;
    padding-top:22px;
    border-top:1px solid var(--line);
    font-size:13px;
    color:var(--ink-3);
  }

  /* ============ 返回顶部 ============ */
  .to-top{
    position:fixed;
    right:24px;
    bottom:24px;
    width:48px;
    height:48px;
    border-radius:50%;
    border:1px solid var(--line-2);
    background:rgba(27,24,21,.92);
    color:var(--brand);
    display:flex;
    align-items:center;
    justify-content:center;
    opacity:0;
    visibility:hidden;
    transform:translateY(12px);
    transition:opacity var(--ease), transform var(--ease), visibility var(--ease), border-color var(--ease);
    z-index:50;
  }
  .to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
  .to-top:hover{border-color:var(--brand-line);background:rgba(35,31,26,.96);}

  /* ============ 响应式 ============ */
  @media (max-width:1024px){
    .main-nav{display:none;}
    .nav-cta{display:none;}
    .nav-toggle{display:flex;}
    .checklist{grid-template-columns:repeat(3,1fr);}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  }

  @media (max-width:768px){
    body{font-size:15.5px;}
    .section{padding:60px 0;}
    .section.tight{padding:48px 0;}
    .page-banner{min-height:320px;padding:56px 0 34px;}
    .banner-desc{font-size:15.5px;}
    .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
    .log-item{flex-direction:column;gap:16px;}
    .log-thumb{flex:none;width:100%;height:180px;}
    .checklist{grid-template-columns:repeat(2,1fr);}
    .cross-grid{grid-template-columns:1fr;}
    .cta-inner{flex-direction:column;align-items:flex-start;}
  }

  @media (max-width:520px){
    .container{padding:0 16px;}
    .brand-text{font-size:15px;}
    .page-banner h1{font-size:26px;}
    .checklist{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;}
    .log-item{padding:14px;}
    .log-thumb{height:160px;}
    .log-body h3{font-size:17px;}
    .faq-q{font-size:16px;padding:20px 0;}
    .faq-a p{padding-right:0;}
    .to-top{right:16px;bottom:16px;}
    .btn-primary,.btn-ghost{width:100%;}
  }

/* roulang page: category3 */
:root{
  --bg:#0C0B12;
  --bg-alt:#14121D;
  --card:#1C1A28;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.16);
  --text:#F2F1F7;
  --text-2:#A9A6BC;
  --text-3:#6E6B80;
  --primary:#35E0B0;
  --primary-soft:rgba(53,224,176,.12);
  --primary-line:rgba(53,224,176,.34);
  --accent:#FF8A3D;
  --r-card:16px;
  --r-sm:12px;
  --r-pill:999px;
  --shadow:0 14px 32px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(53,224,176,.32), 0 18px 40px rgba(53,224,176,.16);
  --container:1240px;
}
*,*::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,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:800;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
input,textarea{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 32px;}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(12,11,18,.72);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:rgba(12,11,18,.92);
  backdrop-filter:blur(8px);
  border-bottom-color:var(--line);
}
.header-inner{display:flex;align-items:center;gap:18px;min-height:64px;}
@media (min-width:768px){.header-inner{min-height:72px;gap:28px;}}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:12px;height:12px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 0 4px rgba(53,224,176,.16),0 0 14px rgba(53,224,176,.5);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:16px;font-weight:800;letter-spacing:.02em;}
.brand-text i{font-style:normal;font-size:11px;color:var(--text-2);letter-spacing:.16em;}
.main-nav{display:none;align-items:center;gap:26px;margin-left:auto;}
.nav-link{
  position:relative;font-size:15px;letter-spacing:.02em;color:var(--text-2);
  padding:6px 0;transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--text);}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
@media (min-width:900px){
  .main-nav{display:flex;}
  .header-actions{margin-left:0;}
}
.nav-toggle{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  transition:border-color .2s ease,background .2s ease;
}
.nav-toggle span{display:block;width:18px;height:1.6px;background:var(--text);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle:hover{border-color:var(--primary-line);background:var(--primary-soft);}
@media (min-width:900px){.nav-toggle{display:none;}}
.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.7);z-index:90;opacity:0;pointer-events:none;transition:opacity .25s ease;}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;z-index:95;
  background:var(--bg-alt);border-left:1px solid var(--line);
  padding:22px 22px 32px;display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform .28s ease;overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);}
.drawer-head span{font-size:13px;letter-spacing:.16em;color:var(--text-3);}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);font-size:18px;line-height:1;color:var(--text-2);}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;font-size:16px;color:var(--text-2);border-bottom:1px solid var(--line);
  transition:color .2s ease,padding-left .2s ease;
}
.drawer-link:hover{color:var(--primary);padding-left:6px;}
.drawer-link.is-active{color:var(--primary);}
.drawer-link::after{content:"›";color:var(--text-3);font-size:18px;}
.drawer-cta{margin-top:auto;padding-top:24px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;letter-spacing:.02em;
  transition:transform .18s ease,background .2s ease,border-color .2s ease,color .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--primary);color:#07201A;}
.btn-primary:hover{background:#4dedbe;box-shadow:0 12px 28px rgba(53,224,176,.28);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{border:1px solid var(--primary-line);color:var(--text);background:transparent;}
.btn-ghost:hover{background:var(--primary-soft);border-color:var(--primary);transform:translateY(-2px);}
.btn-block{width:100%;}

/* ---------- 页面横幅 ---------- */
.page-banner{
  position:relative;min-height:320px;display:flex;align-items:flex-end;
  padding:104px 0 52px;
  background-image:
    linear-gradient(180deg,rgba(12,11,18,.74) 0%,rgba(12,11,18,.9) 62%,#0C0B12 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:46px 46px;pointer-events:none;opacity:.7;
}
.banner-inner{position:relative;z-index:2;max-width:880px;}
.badge-line{
  display:inline-block;font-size:12px;letter-spacing:.2em;color:var(--primary);
  border:1px solid var(--primary-line);border-radius:var(--r-pill);
  padding:5px 14px;background:rgba(53,224,176,.06);
}
.page-banner h1{font-size:30px;margin:18px 0 14px;font-weight:800;}
.page-banner .banner-sub{font-size:16px;color:var(--text-2);max-width:640px;}
@media (min-width:768px){
  .page-banner{padding:140px 0 64px;}
  .page-banner h1{font-size:42px;}
  .page-banner .banner-sub{font-size:17px;}
}
@media (min-width:1024px){.page-banner h1{font-size:52px;}}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.chip{
  display:inline-flex;align-items:center;height:34px;padding:0 15px;
  border-radius:var(--r-pill);border:1px solid var(--line);
  font-size:13px;color:var(--text-2);background:rgba(255,255,255,.02);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.chip:hover{color:var(--text);border-color:var(--line-2);}
.chip.is-active{color:var(--primary);border-color:var(--primary-line);background:var(--primary-soft);}

/* ---------- 板块基础 ---------- */
.section{padding:56px 0;}
.section-alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
@media (min-width:768px){.section{padding:84px 0;}}
@media (min-width:1024px){.section{padding:96px 0;}}
.section-head{max-width:760px;margin-bottom:26px;}
@media (min-width:768px){.section-head{margin-bottom:36px;}}
.section-head h2{font-size:24px;font-weight:800;}
@media (min-width:768px){.section-head h2{font-size:30px;}}
.section-desc{margin-top:12px;color:var(--text-2);font-size:15px;line-height:1.85;}
.eyebrow{display:block;font-size:12px;letter-spacing:.22em;color:var(--text-3);margin-bottom:12px;}

/* ---------- 阶段排查 ---------- */
.stage-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:900px){.stage-grid{grid-template-columns:1fr 1fr;gap:24px;}}
.stage-col{display:flex;flex-direction:column;gap:20px;}
@media (min-width:900px){
  .stage-col{gap:24px;}
  .stage-col--offset{margin-top:56px;}
}
.stage-card{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:26px 24px 24px;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.stage-card:hover{transform:translateY(-4px);border-color:var(--primary-line);box-shadow:var(--glow);}
.stage-num{
  display:inline-block;font-size:13px;font-weight:800;letter-spacing:.2em;
  color:var(--primary);padding-bottom:4px;border-bottom:2px solid var(--primary-line);
}
.stage-card h3{margin:16px 0 14px;font-size:19px;}
.tick-list{display:flex;flex-direction:column;gap:10px;}
.tick-list li{position:relative;padding-left:20px;font-size:15px;color:var(--text-2);line-height:1.8;}
.tick-list li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;
  background:var(--primary-soft);border:1px solid var(--primary-line);
}
.tip-card{
  border:1px dashed var(--line-2);border-radius:var(--r-card);
  padding:22px 22px;font-size:14px;color:var(--text-2);background:rgba(255,255,255,.015);
}
.tip-card b{display:block;color:var(--text);font-size:15px;margin-bottom:8px;letter-spacing:.02em;}

/* ---------- 高频问题（双列错落） ---------- */
.q-columns{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:900px){.q-columns{grid-template-columns:1fr 1fr;gap:24px;}}
.q-col{display:flex;flex-direction:column;gap:20px;}
@media (min-width:900px){.q-col{gap:24px;}.q-col--offset{margin-top:48px;}}
.q-card{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:24px 24px 24px 26px;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.q-card::before{
  content:"";position:absolute;left:0;top:26px;bottom:26px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),rgba(53,224,176,0));
  opacity:.7;
}
.q-card:hover{transform:translateY(-4px);border-color:var(--primary-line);box-shadow:var(--glow);}
.q-num{display:inline-block;font-size:12px;font-weight:800;letter-spacing:.2em;color:var(--primary);}
.q-card h3{margin:10px 0 10px;font-size:17px;font-weight:700;line-height:1.6;}
.q-card p{font-size:15px;color:var(--text-2);line-height:1.85;}

/* ---------- 分类互链 ---------- */
.link-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:860px){.link-grid{grid-template-columns:1fr 1fr;gap:24px;}}
.link-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.link-card:hover{transform:translateY(-4px);border-color:var(--primary-line);box-shadow:var(--glow);}
.link-card img{width:100%;height:180px;object-fit:cover;transition:transform .3s ease;}
.link-card:hover img{transform:scale(1.04);}
.link-card-body{padding:20px 22px 22px;}
.link-card-body span{font-size:12px;letter-spacing:.16em;color:var(--text-3);}
.link-card-body h3{margin:10px 0 8px;font-size:19px;}
.link-card-body p{font-size:14px;color:var(--text-2);line-height:1.8;}
.link-more{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14px;color:var(--primary);}
.link-more::after{content:"→";transition:transform .2s ease;}
.link-card:hover .link-more::after{transform:translateX(4px);}

/* ---------- 转化条带 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background-color:rgba(53,224,176,.08);
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:40px 40px;
  padding:48px 0;
}
@media (min-width:768px){.cta-band{padding:64px 0;}}
.cta-inner{display:flex;flex-direction:column;gap:22px;align-items:flex-start;}
@media (min-width:860px){.cta-inner{flex-direction:row;align-items:center;justify-content:space-between;gap:32px;}}
.cta-inner h2{font-size:23px;}
@media (min-width:768px){.cta-inner h2{font-size:28px;}}
.cta-inner p{margin-top:10px;color:var(--text-2);font-size:15px;max-width:620px;}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;display:flex;flex-direction:column;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0;text-align:left;font-size:17px;font-weight:700;color:var(--text);
  transition:color .2s ease;
}
@media (min-width:768px){.faq-q{font-size:18px;}}
.faq-q:hover{color:var(--primary);}
.faq-item.is-open .faq-q{color:var(--primary);}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line-2);position:relative;transition:transform .22s ease,border-color .22s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:11px;height:1.6px;}
.faq-icon::after{width:1.6px;height:11px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);border-color:var(--primary-line);}
.faq-a{
  max-height:0;overflow:hidden;opacity:0;
  transition:max-height .25s ease,opacity .25s ease,padding .25s ease;
}
.faq-item.is-open .faq-a{max-height:420px;opacity:1;padding-bottom:22px;}
.faq-a p{font-size:15px;color:var(--text-2);line-height:1.9;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-alt);border-top:1px solid var(--line);padding:52px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1fr 1fr;gap:36px;}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.85;max-width:360px;}
.footer-col h4{font-size:14px;letter-spacing:.12em;color:var(--text);margin-bottom:16px;font-weight:700;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2);transition:color .2s ease;}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-direction:column;gap:8px;font-size:13px;color:var(--text-3);
}
@media (min-width:768px){.footer-bottom{flex-direction:row;justify-content:space-between;align-items:center;}}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:20px;bottom:24px;width:48px;height:48px;border-radius:50%;
  border:1px solid var(--line-2);background:rgba(20,18,29,.94);color:var(--text);
  display:flex;align-items:center;justify-content:center;font-size:17px;
  opacity:0;pointer-events:none;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,border-color .2s ease,color .2s ease;
  z-index:70;
}
.to-top.is-visible{opacity:1;pointer-events:auto;transform:translateY(0);}
.to-top:hover{border-color:var(--primary);color:var(--primary);}