/* roulang page: index */
:root{
  --bg-deep:#050A14;
  --bg-panel:#0B1424;
  --bg-panel-2:#101D33;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --text-hi:rgba(255,255,255,.94);
  --text-mid:rgba(255,255,255,.72);
  --text-low:rgba(255,255,255,.48);
  --primary:#2E6BFF;
  --primary-glow:rgba(46,107,255,.45);
  --accent:#25D8C0;
  --reward:#FF9A3D;
  --radius-sm:10px;
  --radius-card:16px;
  --radius-lg:24px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  background:var(--bg-deep);
  color:var(--text-hi);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media(min-width:768px){.container{padding:0 32px;}}
@media(min-width:1280px){.container{padding:0 48px;}}

/* ===== 顶部公告 ===== */
.topbar{
  background:linear-gradient(90deg,rgba(46,107,255,.16),rgba(37,216,192,.08));
  border-bottom:1px solid var(--line);
  font-size:12.5px;
  color:var(--text-mid);
  letter-spacing:.02em;
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:34px;}
.topbar-inner span{display:inline-flex;align-items:center;gap:8px;}
.topbar-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px rgba(37,216,192,.9);}
.topbar-close{width:24px;height:24px;display:grid;place-items:center;color:var(--text-low);border-radius:50%;transition:color .2s var(--ease),background .2s var(--ease);}
.topbar-close:hover{color:var(--text-hi);background:rgba(255,255,255,.06);}

/* ===== 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(5,10,20,.86);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px;}
.logo{display:flex;align-items:baseline;gap:9px;font-size:18px;font-weight:700;letter-spacing:-.01em;color:var(--text-hi);white-space:nowrap;}
.logo small{font-size:10.5px;font-weight:500;letter-spacing:.22em;color:var(--text-low);text-transform:uppercase;}
.nav-links{display:none;}
@media(min-width:1024px){
  .nav-links{display:flex;align-items:center;gap:4px;}
}
.nav-links a{
  position:relative;display:inline-block;padding:10px 14px;font-size:15px;color:var(--text-mid);
  transition:color .2s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:50%;right:50%;bottom:6px;height:1px;background:var(--primary);
  transition:left .22s var(--ease),right .22s var(--ease);
}
.nav-links a:hover{color:var(--text-hi);}
.nav-links a:hover::after{left:14px;right:14px;}
.nav-links a.active{color:var(--text-hi);font-weight:600;}
.nav-links a.active::after{left:14px;right:14px;height:2px;background:var(--accent);}
.nav-links a.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--accent);
}
.nav-actions{display:none;align-items:center;gap:10px;}
@media(min-width:1024px){.nav-actions{display:flex;}}
.nav-toggle{
  display:grid;place-items:center;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-strong);color:var(--text-hi);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--accent);background:rgba(255,255,255,.04);}
@media(min-width:1024px){.nav-toggle{display:none;}}

.drawer{
  position:fixed;inset:0;z-index:120;background:rgba(5,10,20,.97);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  transform:translateX(100%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;padding:20px 20px 28px;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-close{width:44px;height:44px;display:grid;place-items:center;border-radius:12px;border:1px solid var(--line-strong);}
.drawer nav{display:flex;flex-direction:column;flex:1;}
.drawer nav a{
  font-size:18px;line-height:56px;color:var(--text-mid);
  border-left:3px solid transparent;padding-left:14px;
  border-bottom:1px solid var(--line);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.drawer nav a:hover{color:var(--text-hi);background:rgba(255,255,255,.03);}
.drawer nav a.active{color:var(--text-hi);font-weight:600;border-left-color:var(--accent);}
.drawer-cta{margin-top:26px;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:12px 24px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease);
}
.btn-primary{
  background:var(--primary);color:#fff;
  box-shadow:0 0 0 1px rgba(46,107,255,.5),0 8px 28px rgba(46,107,255,.35);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(46,107,255,.62),0 12px 34px rgba(46,107,255,.45);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text-hi);}
.btn-ghost:hover{border-color:var(--accent);background:rgba(255,255,255,.04);}
.btn-sm{min-height:40px;padding:9px 18px;font-size:14px;}
.btn-block{width:100%;}

/* ===== 文字链 ===== */
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:500;
  color:var(--accent);position:relative;
}
.text-link span.arrow{transition:transform .2s var(--ease);}
.text-link::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:var(--accent);
  transition:width .24s var(--ease);
}
.text-link:hover::after{width:calc(100% - 18px);}
.text-link:hover span.arrow{transform:translateX(3px);}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;padding:56px 0 64px;border-bottom:1px solid var(--line);}
@media(min-width:1024px){.hero{padding:84px 0 96px;}}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;opacity:.28;
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:
    radial-gradient(620px 420px at 16% 28%,rgba(46,107,255,.20),transparent 70%),
    radial-gradient(520px 360px at 84% 68%,rgba(37,216,192,.10),transparent 70%);
}
.hero-grid-lines{
  position:absolute;inset:0;z-index:1;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 78%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 78%);
}
.hero-inner{position:relative;z-index:2;display:grid;gap:44px;}
@media(min-width:1024px){.hero-inner{grid-template-columns:1.42fr 1fr;align-items:center;gap:56px;}}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.12em;
  color:var(--text-low);text-transform:uppercase;
}
.eyebrow::before{content:"";width:2px;height:14px;background:var(--primary);border-radius:2px;}
.hero h1{
  margin-top:18px;
  font-size:clamp(28px,4.6vw,52px);
  font-weight:700;line-height:1.15;letter-spacing:-.01em;
}
.hero h1 em{font-style:normal;color:var(--accent);}
.hero-sub{margin-top:18px;max-width:640px;font-size:clamp(15px,1.5vw,17px);line-height:1.85;color:var(--text-mid);}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}
.hero-stats{display:flex;flex-wrap:wrap;align-items:center;gap:0;margin-top:38px;}
.hero-stat{padding:0 20px;border-left:1px solid var(--line);}
.hero-stat:first-child{padding-left:0;border-left:none;}
.hero-stat b{
  display:block;font-size:clamp(22px,3vw,32px);font-weight:700;line-height:1.2;
  font-variant-numeric:tabular-nums;color:var(--text-hi);
}
.hero-stat span{display:block;font-size:12.5px;color:var(--text-low);letter-spacing:.04em;}

.hero-cards{position:relative;}
.hero-card-back{
  position:absolute;left:22px;right:-10px;top:22px;bottom:-14px;
  border-radius:var(--radius-card);border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.012));
}
.hero-card{
  position:relative;border-radius:var(--radius-card);padding:14px;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid rgba(255,255,255,.10);
  border-top-color:rgba(255,255,255,.18);
  box-shadow:0 24px 60px rgba(0,0,0,.5);
}
.hero-card img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:12px;background:var(--bg-panel-2);
}
@media(max-width:1023px){.hero-card img{aspect-ratio:16/9;max-height:250px;}}
.hero-card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.hero-card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:12px;padding:0 4px 4px;}
.hero-card-foot p{font-size:13px;color:var(--text-low);}

/* ===== 徽章/标签 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;
  font-size:12px;letter-spacing:.02em;line-height:1.6;
  background:rgba(255,255,255,.06);color:var(--text-mid);
  border:1px solid var(--line);
}
.badge-primary{background:rgba(46,107,255,.12);color:#9DBBFF;border-color:rgba(46,107,255,.28);}
.badge-accent{background:rgba(37,216,192,.12);color:#7BEDDD;border-color:rgba(37,216,192,.26);}
.badge-reward{background:rgba(255,154,61,.12);color:#FFC48C;border-color:rgba(255,154,61,.28);}

/* ===== 板块通用 ===== */
.section{padding:64px 0;}
@media(min-width:1024px){.section{padding:104px 0;}}
.section-panel{background:var(--bg-panel-2);border-top:1px solid rgba(255,255,255,.10);border-bottom:1px solid var(--line);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:40px;}
.section-head h2{font-size:clamp(22px,2.6vw,34px);font-weight:700;line-height:1.25;letter-spacing:-.01em;}
.section-head p{margin-top:10px;max-width:640px;font-size:15px;color:var(--text-mid);}
.eyebrow-sm{font-size:12px;letter-spacing:.12em;color:var(--text-low);display:inline-flex;align-items:center;gap:10px;margin-bottom:14px;}
.eyebrow-sm::before{content:"";width:2px;height:13px;background:var(--accent);border-radius:2px;}

/* ===== 步骤时间轴 ===== */
.steps-layout{display:grid;gap:36px;}
@media(min-width:1024px){.steps-layout{grid-template-columns:1fr 2.1fr;gap:56px;align-items:start;}}
.steps-aside h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.25;}
.steps-aside p{margin-top:14px;font-size:15px;color:var(--text-mid);}
.steps-aside .text-link{margin-top:20px;}
.steps{position:relative;display:grid;}
@media(min-width:1024px){.steps{grid-template-columns:repeat(4,minmax(0,1fr));gap:0;}}
.step{position:relative;padding:0 0 30px 44px;}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:12px;top:22px;bottom:0;width:1px;background:var(--line);
}
.step:last-child::before{display:none;}
.step-dot{
  position:absolute;left:0;top:0;width:25px;height:25px;border-radius:50%;
  display:grid;place-items:center;font-size:11.5px;font-weight:600;
  border:1.5px solid var(--primary);background:var(--bg-deep);color:#9DBBFF;
  font-variant-numeric:tabular-nums;z-index:2;
}
.step.is-current .step-dot{background:var(--primary);color:#fff;box-shadow:0 0 0 4px rgba(46,107,255,.16);}
.step h3{font-size:17px;font-weight:600;line-height:1.5;}
.step p{margin-top:8px;font-size:14px;line-height:1.8;color:var(--text-mid);}
@media(min-width:1024px){
  .step{padding:52px 22px 0 0;}
  .step::before{left:0;right:0;top:12px;bottom:auto;width:100%;height:1px;}
  .step:last-child::before{display:block;}
  .step-dot{left:0;top:0;}
}

/* ===== 栏目速览（1大+3小） ===== */
.overview-grid{display:grid;gap:20px;}
@media(min-width:768px){.overview-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.overview-grid{grid-template-columns:repeat(4,minmax(0,1fr));}}
.ov-card{
  position:relative;background:var(--bg-panel);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:24px;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.ov-card:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.20);box-shadow:0 10px 30px rgba(0,0,0,.45);}
.ov-card.big{grid-column:span 1;display:flex;flex-direction:column;gap:16px;}
@media(min-width:768px){.ov-card.big{grid-column:span 2;}}
@media(min-width:1024px){.ov-card.big{grid-column:span 2;grid-row:span 2;}}
.ov-card.big img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px;background:var(--bg-panel-2);}
.ov-corner{
  position:absolute;top:14px;right:14px;font-size:11px;letter-spacing:.06em;
  padding:3px 9px;border-radius:6px;
}
.ov-corner.gold{background:rgba(255,154,61,.14);color:#FFC48C;border:1px solid rgba(255,154,61,.3);}
.ov-corner.teal{background:rgba(37,216,192,.12);color:#7BEDDD;border:1px solid rgba(37,216,192,.26);}
.ov-icon{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  border:1.5px solid rgba(46,107,255,.45);color:#9DBBFF;background:rgba(46,107,255,.08);
}
.ov-icon svg{width:20px;height:20px;}
.ov-card h3{margin-top:16px;font-size:17px;font-weight:600;line-height:1.5;}
.ov-card p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--text-mid);}
.ov-threshold{margin-top:14px;font-size:12.5px;color:var(--text-low);letter-spacing:.02em;}

/* ===== 进度 ===== */
.progress-list{display:grid;gap:22px;}
.progress-item{
  display:grid;grid-template-columns:1fr;gap:12px;
  padding:22px;border-radius:var(--radius-card);
  background:var(--bg-panel);border:1px solid var(--line);
}
@media(min-width:768px){
  .progress-item{grid-template-columns:200px 1fr 168px;align-items:center;gap:24px;}
}
.progress-name{display:flex;align-items:center;gap:12px;font-size:16px;font-weight:600;}
.progress-name .p-icon{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;flex:none;
  border:1.5px solid rgba(255,255,255,.16);color:var(--accent);
}
.progress-name .p-icon svg{width:17px;height:17px;}
.progress-track{position:relative;height:8px;border-radius:999px;background:rgba(255,255,255,.08);}
.progress-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--primary),var(--accent));position:relative;}
.progress-fill::after{
  content:"";position:absolute;right:-3px;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 10px rgba(37,216,192,.85);
}
.progress-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;}
@media(min-width:768px){.progress-meta{justify-content:flex-end;gap:16px;}}
.progress-num{font-size:16px;font-weight:600;font-variant-numeric:tabular-nums;color:var(--text-hi);}
.status{font-size:12px;padding:3px 10px;border-radius:999px;border:1px solid transparent;white-space:nowrap;}
.status-run{background:rgba(46,107,255,.12);color:#9DBBFF;border-color:rgba(46,107,255,.3);}
.status-done{background:rgba(37,216,192,.12);color:#7BEDDD;border-color:rgba(37,216,192,.28);}
.status-idle{color:var(--text-low);border-color:var(--line-strong);}

/* ===== 分类入口卡 ===== */
.cat-grid{display:grid;gap:22px;}
@media(min-width:768px){.cat-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
.cat-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--radius-card);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.cat-card:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.22);box-shadow:0 14px 36px rgba(0,0,0,.5);}
.cat-media{position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--bg-panel-2);}
.cat-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.cat-card:hover .cat-media img{transform:scale(1.03);}
.cat-body{padding:22px 24px 26px;flex:1;display:flex;flex-direction:column;}
.cat-body h3{margin-top:12px;font-size:19px;font-weight:600;}
.cat-body p{margin-top:10px;font-size:14.5px;line-height:1.85;color:var(--text-mid);flex:1;}
.cat-foot{margin-top:18px;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-low);}

/* ===== 最新信息 CMS ===== */
.news-layout{display:grid;gap:24px;}
@media(min-width:1024px){.news-layout{grid-template-columns:1.05fr 1fr;gap:32px;align-items:start;}}
.news-lead{
  background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.news-lead:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.2);}
.news-lead-media{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--bg-panel-2);}
.news-lead-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.news-lead:hover .news-lead-media img{transform:scale(1.03);}
.news-lead-body{padding:24px 26px 26px;}
.news-lead-title{margin-top:14px;font-size:20px;font-weight:700;line-height:1.5;}
.news-lead-title a{transition:color .2s var(--ease);}
.news-lead-title a:hover{color:#9DBBFF;}
.news-lead-sum{margin-top:12px;font-size:14.5px;line-height:1.85;color:var(--text-mid);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:16px;font-size:12.5px;color:var(--text-low);font-variant-numeric:tabular-nums;}
.meta-row i{width:3px;height:3px;border-radius:50%;background:rgba(255,255,255,.3);display:inline-block;}
.news-list{border-top:1px solid var(--line);}
.news-item{
  display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;
  padding:16px 14px;border-bottom:1px solid var(--line);
  transition:background .2s var(--ease);
}
@media(min-width:768px){.news-item{grid-template-columns:52px 1fr auto auto 24px;gap:16px;}}
.news-item:hover{background:rgba(255,255,255,.03);}
.news-index{font-size:13px;color:var(--text-low);font-variant-numeric:tabular-nums;letter-spacing:.06em;}
.news-item-title{
  font-size:15.5px;font-weight:500;line-height:1.6;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  transition:color .2s var(--ease);
}
.news-item-title:hover{color:#9DBBFF;}
.news-item-date{font-size:12.5px;color:var(--text-low);font-variant-numeric:tabular-nums;white-space:nowrap;}
.news-arrow{color:var(--text-low);font-size:14px;transition:transform .2s var(--ease),color .2s var(--ease);}
.news-item:hover .news-arrow{transform:translateX(3px);color:var(--accent);}
@media(max-width:767px){
  .news-item{grid-template-columns:1fr auto;}
  .news-item .badge,.news-index{display:none;}
}
.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  border:1px dashed var(--line-strong);border-radius:var(--radius-card);
  background:var(--bg-panel);text-align:center;padding:32px;
}
.empty-state svg{width:34px;height:34px;color:rgba(46,107,255,.4);}
.empty-state p{font-size:14.5px;color:var(--text-mid);}

/* ===== 证据/数据条 ===== */
.proof-grid{display:grid;gap:20px;}
@media(min-width:640px){.proof-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.proof-grid{grid-template-columns:repeat(4,minmax(0,1fr));}}
.proof-card{
  padding:24px;border-radius:var(--radius-card);border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.04),rgba(255,255,255,.012));
}
.proof-card b{display:block;font-size:clamp(24px,3vw,36px);font-weight:700;line-height:1.15;font-variant-numeric:tabular-nums;color:var(--text-hi);}
.proof-card span{display:block;margin-top:10px;font-size:13.5px;color:var(--text-mid);line-height:1.75;}

/* ===== FAQ ===== */
.faq-wrap{display:grid;gap:32px;}
@media(min-width:1024px){.faq-wrap{grid-template-columns:1.6fr 1fr;gap:48px;align-items:start;}}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 4px;font-size:16px;font-weight:600;line-height:1.6;cursor:pointer;list-style:none;
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:#9DBBFF;}
.faq-sign{
  flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--line-strong);
  display:grid;place-items:center;font-size:15px;line-height:1;color:var(--text-mid);
  transition:transform .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.faq-item[open] .faq-sign{transform:rotate(180deg);border-color:var(--accent);color:var(--accent);}
.faq-answer{padding:0 4px 22px;font-size:15px;line-height:1.85;color:var(--text-mid);}
.faq-side-card{
  padding:24px;border-radius:var(--radius-card);border:1px solid var(--line);
  background:var(--bg-panel);margin-bottom:18px;
}
.faq-side-card h3{font-size:16px;font-weight:600;}
.faq-side-card p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--text-mid);}
.faq-side-card .text-link{margin-top:14px;}

/* ===== CTA ===== */
.cta-section{padding:0 0 72px;}
@media(min-width:1024px){.cta-section{padding:0 0 104px;}}
.cta-box{
  position:relative;overflow:hidden;text-align:center;
  border-radius:var(--radius-lg);padding:56px 24px;
  background:linear-gradient(160deg,rgba(46,107,255,.20),rgba(37,216,192,.07) 60%,rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.10);
  border-top-color:rgba(255,255,255,.20);
}
@media(min-width:768px){.cta-box{padding:72px 48px;}}
.cta-box::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(520px 320px at 50% 0%,rgba(46,107,255,.22),transparent 70%);
  pointer-events:none;
}
.cta-box > *{position:relative;z-index:2;}
.cta-box h2{font-size:clamp(22px,2.6vw,34px);font-weight:700;line-height:1.25;}
.cta-box p{margin:16px auto 0;max-width:620px;font-size:15px;line-height:1.85;color:var(--text-mid);}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:30px;}

/* ===== 页脚 ===== */
.site-footer{border-top:1px solid var(--line);background:#04070F;}
.footer-seg{padding:32px 0;border-bottom:1px solid var(--line);}
.footer-seg:last-of-type{border-bottom:none;}
.footer-grid{display:grid;gap:28px;}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1.6fr;gap:48px;}}
.footer-brand .logo{font-size:18px;}
.footer-brand p{margin-top:14px;font-size:13.5px;line-height:1.9;color:var(--text-low);max-width:340px;}
.footer-social{display:flex;gap:10px;margin-top:18px;}
.footer-social a{
  width:38px;height:38px;border-radius:50%;border:1.5px solid var(--line-strong);
  display:grid;place-items:center;color:var(--text-mid);
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.footer-social a:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);}
.footer-social svg{width:17px;height:17px;}
.footer-nav h3,.footer-note h3{font-size:13px;letter-spacing:.12em;color:var(--text-mid);font-weight:600;}
.footer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 24px;margin-top:16px;}
.footer-links a{
  display:block;font-size:13.5px;line-height:2.2;color:var(--text-low);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.footer-links a:hover{color:var(--text-hi);padding-left:4px;}
.footer-note p{margin-top:14px;font-size:12.5px;line-height:1.95;color:var(--text-low);}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding:22px 0;}
.footer-bottom p{font-size:12.5px;color:var(--text-low);}
.to-top{
  width:42px;height:42px;border-radius:50%;border:1px solid var(--line-strong);
  display:grid;place-items:center;color:var(--text-mid);
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.to-top:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);}

.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.in{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --bg-deep:#050A14;
  --bg-panel:#0B1424;
  --bg-panel-2:#101D33;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text-hi:rgba(255,255,255,.94);
  --text-mid:rgba(255,255,255,.72);
  --text-low:rgba(255,255,255,.48);
  --primary:#2E6BFF;
  --primary-glow:rgba(46,107,255,.45);
  --accent:#25D8C0;
  --reward:#FF9A3D;
  --r-card:16px;
  --r-big:24px;
  --r-img:12px;
  --shadow-card:0 10px 30px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-deep);
  color:var(--text-hi);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
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,p{margin:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:768px){.container{padding-left:32px;padding-right:32px;}}
@media (min-width:1280px){.container{padding-left:48px;padding-right:48px;}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,10,20,.72);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(5,10,20,.9);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:72px;
}
.logo{
  display:inline-flex;align-items:baseline;gap:8px;
  font-size:19px;font-weight:700;letter-spacing:-.01em;color:var(--text-hi);
  white-space:nowrap;
}
.logo small{
  font-size:10px;letter-spacing:.22em;color:var(--text-low);font-weight:500;
}
.logo:hover{color:#fff;}
.nav-links{display:none;align-items:center;gap:28px;}
.nav-links a{
  position:relative;
  font-size:15px;color:var(--text-mid);
  padding:6px 2px;
  transition:color .2s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:1px;
  background:var(--primary);transition:left .24s var(--ease),right .24s var(--ease);
}
.nav-links a:hover{color:var(--text-hi);}
.nav-links a:hover::after{left:0;right:0;}
.nav-links a.active{color:var(--text-hi);}
.nav-links a.active::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--accent);
}
.nav-links a.active::after{left:0;right:0;height:2px;}
.nav-actions{display:flex;align-items:center;gap:10px;}
.nav-actions .btn{display:none;}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);color:var(--text-hi);
}
.menu-toggle svg{width:20px;height:20px;}
@media (min-width:1024px){
  .nav-links{display:flex;}
  .nav-actions .btn{display:inline-flex;}
  .menu-toggle{display:none;}
}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:80;
  background:rgba(5,10,20,.98);
  padding:22px 20px 32px;
  display:flex;flex-direction:column;gap:8px;
  transform:translateY(-12px);opacity:0;pointer-events:none;
  transition:opacity .22s var(--ease),transform .22s var(--ease);
}
.drawer.open{opacity:1;transform:none;pointer-events:auto;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer nav{display:flex;flex-direction:column;}
.drawer nav a{
  font-size:18px;color:var(--text-mid);line-height:56px;
  border-bottom:1px solid var(--line);padding-left:14px;position:relative;
}
.drawer nav a.active{color:var(--text-hi);}
.drawer nav a.active::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--accent);border-radius:2px;
}
.drawer .btn{width:100%;margin-top:24px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:999px;
  font-size:14px;font-weight:600;white-space:nowrap;
  transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-primary{
  background:linear-gradient(180deg,rgba(255,255,255,.14),rgba(255,255,255,0) 42%),var(--primary);
  color:#fff;
  box-shadow:0 0 0 1px rgba(46,107,255,.5),0 8px 28px rgba(46,107,255,.35);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(46,107,255,.6),0 12px 34px var(--primary-glow);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  border:1px solid var(--line-strong);color:var(--text-hi);
  background:transparent;
}
.btn-ghost:hover{border-color:var(--accent);background:rgba(255,255,255,.04);}
.btn-sm{height:38px;padding:0 16px;font-size:13px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--accent);
  position:relative;
}
.link-arrow svg{width:15px;height:15px;transition:transform .2s var(--ease);}
.link-arrow::after{
  content:"";position:absolute;left:0;right:100%;bottom:-4px;height:1px;background:var(--accent);
  transition:right .24s var(--ease);
}
.link-arrow:hover::after{right:22px;}
.link-arrow:hover svg{transform:translateX(2px);}

/* ---------- badges / chips ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:999px;
  font-size:12px;letter-spacing:.04em;
  background:rgba(46,107,255,.12);color:#8FB2FF;
  border:1px solid rgba(46,107,255,.22);
}
.badge-accent{background:rgba(37,216,192,.12);color:var(--accent);border-color:rgba(37,216,192,.24);}
.badge-reward{background:rgba(255,154,61,.12);color:var(--reward);border-color:rgba(255,154,61,.24);}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.12em;color:var(--text-low);
}
.eyebrow::before{content:"";width:2px;height:12px;background:var(--primary);border-radius:1px;}

/* ---------- article head ---------- */
.article-hero{
  position:relative;overflow:hidden;
  padding:36px 0 44px;
  border-bottom:1px solid var(--line);
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.16;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(560px 320px at 12% 0%,rgba(46,107,255,.16),transparent 70%),
    radial-gradient(520px 320px at 88% 100%,rgba(37,216,192,.10),transparent 72%),
    linear-gradient(180deg,rgba(5,10,20,.72),rgba(5,10,20,.96));
}
.article-hero .container{position:relative;z-index:1;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-low);margin-bottom:20px;
}
.breadcrumb a{color:var(--text-mid);transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:rgba(255,255,255,.22);}
.breadcrumb .current{color:var(--text-hi);max-width:100%;}
.article-title{
  font-size:clamp(28px,4.6vw,52px);
  font-weight:700;line-height:1.15;letter-spacing:-.01em;
  margin:14px 0 18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:13px;color:var(--text-low);
}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:rgba(255,255,255,.24);}
.article-meta .num{font-variant-numeric:tabular-nums;}
.hero-cover{
  margin-top:28px;border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--line);aspect-ratio:16/7;background:var(--bg-panel);
  box-shadow:var(--shadow-card);
}
.hero-cover img{width:100%;height:100%;object-fit:cover;}

/* ---------- layout ---------- */
.page-main{padding:56px 0 8px;}
@media (min-width:1024px){.page-main{padding:72px 0 16px;}}
.article-layout{display:grid;grid-template-columns:1fr;gap:40px;}
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 260px;gap:56px;align-items:start;}
}
.reading-panel{
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 24px 30px;
}
.article-body{
  color:rgba(255,255,255,.88);
  font-size:17px;line-height:1.95;
  word-break:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1em;}
.article-body h2{
  font-size:24px;font-weight:700;line-height:1.4;letter-spacing:-.005em;
  color:var(--text-hi);margin:40px 0 14px;
}
.article-body h3{font-size:20px;font-weight:600;color:var(--text-hi);margin:32px 0 12px;}
.article-body h4{font-size:17px;font-weight:600;color:var(--text-hi);margin:24px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 1.1em;padding-left:1.4em;}
.article-body ul{list-style:none;padding-left:1.25em;}
.article-body ul li{position:relative;margin:0 0 .5em;}
.article-body ul li::before{
  content:"";position:absolute;left:-1.12em;top:.78em;
  width:6px;height:6px;border-radius:50%;background:var(--primary);
}
.article-body ol{list-style:decimal;}
.article-body ol li{margin:0 0 .5em;}
.article-body ol li::marker{color:var(--primary);font-variant-numeric:tabular-nums;}
.article-body blockquote{
  margin:24px 0;padding:20px;
  border-left:3px solid var(--primary);
  background:rgba(255,255,255,.04);
  border-radius:0 var(--r-img) var(--r-img) 0;
  color:var(--text-mid);
}
.article-body img{margin:24px auto;border-radius:var(--r-img);border:1px solid var(--line);}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--text-low);text-align:center;margin-top:10px;}
.article-body a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:#7CF0DE;}
.article-body strong{color:var(--text-hi);font-weight:700;}
.article-body table{
  width:100%;border-collapse:collapse;font-size:15px;margin:24px 0;
  border:1px solid var(--line);border-radius:var(--r-img);overflow:hidden;
}
.article-body th,.article-body td{padding:10px 14px;border:1px solid var(--line);text-align:left;vertical-align:top;}
.article-body th{background:var(--bg-panel-2);color:var(--text-hi);font-weight:600;}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.02);}
.article-body code{
  background:rgba(255,255,255,.06);padding:2px 6px;border-radius:6px;
  font-size:.92em;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:34px 0;}

/* ---------- empty state ---------- */
.empty-state{
  min-height:240px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  text-align:center;padding:40px 24px;
  background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--r-card);
}
.empty-state svg{width:40px;height:40px;color:rgba(46,107,255,.4);}
.empty-state p{color:var(--text-mid);font-size:15px;}

/* ---------- aside ---------- */
.aside-stack{display:flex;flex-direction:column;gap:20px;}
@media (min-width:1024px){
  .aside-stack{position:sticky;top:96px;}
}
.side-card{
  background:var(--bg-panel);border:1px solid var(--line);
  border-radius:var(--r-card);padding:20px;
}
.side-card h3{
  font-size:14px;font-weight:600;color:var(--text-hi);margin-bottom:14px;
  padding-bottom:12px;border-bottom:1px solid var(--line);
}
.side-list li{display:flex;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-low);padding:7px 0;}
.side-list li span:last-child{color:var(--text-mid);text-align:right;}
.side-nav a{
  display:flex;align-items:center;justify-content:space-between;
  font-size:14px;color:var(--text-mid);padding:10px 0;
  border-bottom:1px solid var(--line);transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.side-nav a:last-child{border-bottom:0;}
.side-nav a:hover{color:var(--accent);padding-left:4px;}
.side-nav a svg{width:14px;height:14px;opacity:.6;}
.side-note{font-size:13px;line-height:1.9;color:var(--text-low);}

/* ---------- tags ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:999px;
  font-size:13px;color:var(--text-mid);
  border:1px solid var(--line);background:rgba(255,255,255,.02);
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.tag:hover{border-color:var(--accent);color:var(--text-hi);transform:translateY(-1px);}

/* ---------- section ---------- */
.section{padding:72px 0;}
@media (min-width:1024px){.section{padding:96px 0;}}
.section-line{border-top:1px solid var(--line);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;}
.section-head h2{font-size:clamp(22px,2.6vw,34px);font-weight:700;line-height:1.25;}
.section-head p{margin-top:10px;font-size:15px;color:var(--text-mid);max-width:640px;}

/* ---------- related cards ---------- */
.card-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,1fr);}}
.post-card{
  display:flex;flex-direction:column;
  background:var(--bg-panel);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.post-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-card);}
.post-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--bg-panel-2);}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.post-card:hover .thumb img{transform:scale(1.03);}
.post-card .card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;}
.post-card h3{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card p{font-size:14px;color:var(--text-mid);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:4px;font-size:12px;color:var(--text-low);}
.card-meta .dot{width:3px;height:3px;border-radius:50%;background:rgba(255,255,255,.24);}

/* ---------- faq ---------- */
.faq-list{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:16px;
  text-align:left;padding:20px 2px;font-size:16px;font-weight:600;color:var(--text-hi);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--accent);}
.faq-q .ic{
  flex:none;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line-strong);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;line-height:1;color:var(--text-mid);
  transition:transform .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.faq-item.open .faq-q .ic{transform:rotate(180deg);border-color:var(--accent);color:var(--accent);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease);}
.faq-a p{padding:0 44px 22px 2px;font-size:15px;line-height:1.8;color:var(--text-mid);}

/* ---------- cta ---------- */
.cta-band{
  border-radius:var(--r-big);
  border:1px solid var(--line);
  background:
    radial-gradient(620px 260px at 20% 0%,rgba(46,107,255,.20),transparent 68%),
    radial-gradient(520px 240px at 85% 100%,rgba(37,216,192,.12),transparent 70%),
    linear-gradient(160deg,var(--bg-panel-2),var(--bg-panel));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10);
  padding:44px 26px;text-align:center;
}
@media (min-width:768px){.cta-band{padding:56px 48px;}}
.cta-band h2{font-size:clamp(22px,2.6vw,34px);font-weight:700;line-height:1.25;}
.cta-band p{margin:14px auto 26px;max-width:560px;font-size:15px;color:var(--text-mid);}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(11,20,36,.6),rgba(5,10,20,1));}
.footer-seg{padding:44px 0;}
.footer-seg + .footer-seg{border-top:1px solid var(--line);}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1.2fr 1fr 1fr;gap:40px;}}
.footer-brand .logo{font-size:18px;}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.85;color:var(--text-mid);max-width:340px;}
.footer-social{display:flex;gap:12px;margin-top:18px;}
.footer-social a{
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line-strong);
  display:inline-flex;align-items:center;justify-content:center;color:var(--text-mid);
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.footer-social a svg{width:18px;height:18px;}
.footer-social a:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);}
.footer-nav h3,.footer-note h3{font-size:14px;font-weight:600;color:var(--text-hi);margin-bottom:16px;}
.footer-links{display:grid;grid-template-columns:1fr 1fr;gap:14px 20px;}
.footer-links a{font-size:14px;color:var(--text-mid);transition:color .2s var(--ease);}
.footer-links a:hover{color:var(--accent);}
.footer-note p{font-size:13px;line-height:1.9;color:var(--text-low);}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;}
.footer-bottom p{font-size:13px;color:var(--text-low);}
.to-top{
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line-strong);
  display:inline-flex;align-items:center;justify-content:center;color:var(--text-mid);
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.to-top:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --bg-deep:#050A14;
  --bg-panel:#0B1424;
  --bg-panel-2:#101D33;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --text-hi:rgba(255,255,255,.94);
  --text-mid:rgba(255,255,255,.72);
  --text-low:rgba(255,255,255,.48);
  --primary:#2E6BFF;
  --primary-glow:rgba(46,107,255,.45);
  --accent:#25D8C0;
  --reward:#FF9A3D;
  --radius-card:16px;
  --radius-lg:24px;
  --radius-pill:999px;
  --shadow-card:0 10px 30px rgba(0,0,0,.45);
  --t:200ms cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-deep);
  color:var(--text-hi);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
svg{display:block;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 32px;}}
@media (min-width:1280px){.container{padding:0 48px;}}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(5,10,20,.78);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:20px;min-height:72px;}
.logo{
  display:inline-flex;align-items:baseline;gap:8px;
  font-size:17px;font-weight:700;color:var(--text-hi);
  letter-spacing:.01em;white-space:nowrap;
}
.logo small{font-size:10px;font-weight:600;letter-spacing:.3em;color:var(--text-low);}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:auto;}
.nav-links a{
  position:relative;font-size:14px;color:var(--text-mid);
  padding:6px 0;transition:color var(--t);white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;bottom:-2px;left:50%;right:50%;height:1px;
  background:var(--primary);transition:left var(--t),right var(--t);
}
.nav-links a:hover{color:var(--text-hi);}
.nav-links a:hover::after{left:0;right:0;}
.nav-links a.active{color:var(--text-hi);font-weight:600;}
.nav-links a.active::after{left:0;right:0;height:2px;background:var(--accent);}
.nav-links a.active::before{
  content:"";position:absolute;left:-11px;top:50%;width:4px;height:4px;
  border-radius:50%;background:var(--accent);transform:translateY(-50%);
}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:8px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:10px 22px;border-radius:var(--radius-pill);
  font-size:14px;font-weight:600;letter-spacing:.01em;
  transition:transform var(--t),box-shadow var(--t),background var(--t),border-color var(--t),filter var(--t);
}
.btn-primary{
  background:linear-gradient(180deg,#3f7bff,#2459e6);
  color:#fff;
  box-shadow:0 0 0 1px rgba(46,107,255,.5),0 8px 28px rgba(46,107,255,.35);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(46,107,255,.6),0 12px 34px rgba(46,107,255,.45);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:transparent;border:1px solid rgba(255,255,255,.18);color:var(--text-hi);
}
.btn-ghost:hover{border-color:var(--accent);background:rgba(255,255,255,.05);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-strong);align-items:center;justify-content:center;
  color:var(--text-hi);transition:border-color var(--t),background var(--t);
}
.nav-toggle:hover{border-color:var(--accent);background:rgba(255,255,255,.05);}
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-actions{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
}

/* ===== Mobile drawer ===== */
.mobile-drawer{
  position:fixed;inset:0;z-index:90;
  background:rgba(6,11,22,.98);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  display:flex;flex-direction:column;
  padding:20px 20px 28px;
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity var(--t),transform var(--t),visibility var(--t);
}
.mobile-drawer.open{opacity:1;visibility:visible;transform:none;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;min-height:44px;}
.drawer-links{display:flex;flex-direction:column;margin-top:8px;}
.drawer-links a{
  display:block;font-size:18px;line-height:56px;padding-left:16px;
  color:var(--text-mid);border-left:3px solid transparent;
  border-bottom:1px solid var(--line);
}
.drawer-links a.active{color:var(--text-hi);border-left-color:var(--primary);font-weight:600;}
.drawer-cta{margin-top:auto;width:100%;}

/* ===== Hero ===== */
.cat-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
.hero-glow{
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(620px 340px at 12% 16%, rgba(46,107,255,.16), transparent 70%),
    radial-gradient(540px 300px at 88% 78%, rgba(37,216,192,.09), transparent 70%);
}
.hero-grid-lines{
  position:absolute;inset:0;pointer-events:none;opacity:.55;
  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:48px 48px;
  -webkit-mask-image:radial-gradient(closest-side at 50% 45%,#000 55%,transparent 100%);
  mask-image:radial-gradient(closest-side at 50% 45%,#000 55%,transparent 100%);
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1fr;gap:32px;
  padding:56px 0;align-items:center;
}
@media (min-width:1024px){
  .hero-inner{grid-template-columns:1.05fr .95fr;gap:56px;padding:76px 0;}
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-low);margin-bottom:20px;}
.crumbs span{color:rgba(255,255,255,.22);}
.crumbs em{font-style:normal;color:var(--text-hi);}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.12em;color:var(--accent);margin-bottom:16px;
}
.eyebrow::before{content:"";width:2px;height:14px;background:var(--accent);border-radius:2px;}
.cat-hero h1{font-size:clamp(30px,4.6vw,50px);line-height:1.14;letter-spacing:-.01em;}
.hero-sub{margin-top:18px;font-size:17px;color:var(--text-mid);max-width:32em;}
.hero-stats{display:flex;flex-wrap:wrap;margin-top:34px;}
.hero-stats .stat{padding:0 22px;border-left:1px solid var(--line);}
.hero-stats .stat:first-child{padding-left:0;border-left:0;}
.hero-stats .num{
  font-size:clamp(22px,2.6vw,30px);font-weight:700;
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.hero-stats .lbl{font-size:12px;color:var(--text-low);letter-spacing:.08em;margin-top:2px;}
.hero-visual{
  position:relative;border-radius:18px;overflow:hidden;
  border:1px solid var(--line-strong);background:var(--bg-panel);
  box-shadow:var(--shadow-card);aspect-ratio:16/10;
}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 45%,rgba(5,10,20,.72) 100%);
}
.hero-visual .visual-tag{
  position:absolute;left:18px;bottom:16px;z-index:2;
  font-size:12px;letter-spacing:.1em;color:var(--text-mid);
  display:inline-flex;align-items:center;gap:8px;
}
.hero-visual .visual-tag::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent);}

/* ===== Sections ===== */
.section{padding:64px 0;}
@media (min-width:768px){.section{padding:92px 0;}}
.section-alt{
  background:var(--bg-panel);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.sec-head{max-width:760px;margin-bottom:40px;}
.sec-eyebrow{
  display:block;font-size:12px;letter-spacing:.12em;
  color:var(--text-low);margin-bottom:12px;
}
.sec-head h2{font-size:clamp(22px,2.6vw,32px);}
.sec-lead{margin-top:14px;color:var(--text-mid);font-size:16px;}

.split{display:grid;gap:32px;}
@media (min-width:1024px){.split{grid-template-columns:1fr 1fr;gap:64px;}}
.body-text p{color:var(--text-mid);font-size:16px;margin-bottom:18px;}
.body-text p:last-child{margin-bottom:0;}
.point-list{margin-top:6px;}
.point-list li{
  position:relative;padding-left:24px;margin-bottom:14px;
  color:var(--text-mid);font-size:15px;
}
.point-list li::before{
  content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 0 4px rgba(46,107,255,.12);
}
.point-list li strong{color:var(--text-hi);font-weight:600;}

/* ===== Timeline ===== */
.timeline{position:relative;max-width:920px;}
.timeline::before{
  content:"";position:absolute;left:19px;top:14px;bottom:14px;width:1px;
  background:linear-gradient(180deg,var(--primary) 0%,rgba(46,107,255,.45) 45%,rgba(46,107,255,.06) 100%);
}
.tl-item{position:relative;padding-left:68px;padding-bottom:26px;}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute;left:0;top:4px;width:38px;height:38px;border-radius:50%;
  background:var(--bg-deep);border:1px solid rgba(46,107,255,.55);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;color:var(--primary);
  font-variant-numeric:tabular-nums;
}
.tl-item.is-current .tl-dot{
  background:var(--primary);color:#fff;border-color:var(--primary);
  box-shadow:0 0 0 6px rgba(46,107,255,.14);
}
.tl-card{
  background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 26px;
  transition:border-color var(--t),transform var(--t),background var(--t);
}
.tl-card:hover{border-color:rgba(46,107,255,.45);transform:translateY(-2px);background:var(--bg-panel-2);}
.tl-card h3{font-size:18px;margin-bottom:10px;}
.tl-card p{color:var(--text-mid);font-size:15px;line-height:1.8;}
.section-alt .tl-card{background:var(--bg-panel-2);}
.section-alt .tl-card:hover{background:#152442;}

/* ===== Entry cards ===== */
.entry-grid{display:grid;gap:20px;}
@media (min-width:768px){.entry-grid{grid-template-columns:1fr 1fr;gap:24px;}}
.entry-card{
  display:flex;flex-direction:column;
  background:var(--bg-panel);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.entry-card:hover{transform:translateY(-2px);border-color:rgba(46,107,255,.45);box-shadow:var(--shadow-card);}
.entry-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--bg-panel-2);}
.entry-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 320ms cubic-bezier(.2,.7,.3,1);}
.entry-card:hover .entry-thumb img{transform:scale(1.03);}
.entry-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1;}
.badge{
  display:inline-flex;align-items:center;align-self:flex-start;
  font-size:12px;padding:3px 10px;border-radius:var(--radius-pill);
  background:rgba(46,107,255,.14);color:#8bb0ff;letter-spacing:.02em;margin-bottom:12px;
}
.badge-accent{background:rgba(37,216,192,.14);color:var(--accent);}
.badge-reward{background:rgba(255,154,61,.14);color:var(--reward);}
.entry-body h3{font-size:18px;margin-bottom:8px;}
.entry-body p{color:var(--text-mid);font-size:15px;line-height:1.78;}
.entry-link{
  margin-top:18px;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--accent);
}
.entry-link svg{transition:transform var(--t);}
.entry-card:hover .entry-link svg{transform:translateX(3px);}

/* ===== FAQ ===== */
.faq-list{max-width:880px;}
.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:20px;padding:20px 0;
  font-size:16px;font-weight:600;color:var(--text-hi);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 18px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--accent);border-radius:2px;
  transition:transform var(--t),opacity var(--t);
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-answer{padding:0 0 22px;color:var(--text-mid);font-size:15px;line-height:1.88;max-width:70ch;}

/* ===== CTA ===== */
.cta-band{padding:64px 0 72px;}
@media (min-width:768px){.cta-band{padding:92px 0 100px;}}
.cta-card{
  position:relative;overflow:hidden;text-align:center;
  border-radius:var(--radius-lg);border:1px solid var(--line-strong);
  background:linear-gradient(180deg,var(--bg-panel-2),var(--bg-panel));
  padding:56px 28px;box-shadow:var(--shadow-card);
}
.cta-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.32),transparent);
}
.cta-card::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(420px 220px at 50% 0%, rgba(46,107,255,.16), transparent 70%);
}
.cta-card h2{position:relative;z-index:2;font-size:clamp(22px,2.6vw,32px);margin-bottom:14px;}
.cta-card p{position:relative;z-index:2;color:var(--text-mid);max-width:660px;margin:0 auto;font-size:16px;}
.cta-actions{
  position:relative;z-index:2;
  display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:30px;
}

/* ===== Footer ===== */
.site-footer{border-top:1px solid var(--line);background:var(--bg-panel);}
.footer-seg{padding:42px 0;}
.footer-seg + .footer-seg{border-top:1px solid var(--line);padding:22px 0;}
.footer-grid{display:grid;gap:34px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1.4fr;gap:48px;}}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{color:var(--text-mid);font-size:14px;max-width:38ch;}
.footer-social{display:flex;gap:12px;margin-top:20px;}
.footer-social a{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;color:var(--text-mid);
  transition:color var(--t),border-color var(--t),transform var(--t);
}
.footer-social a:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-1px);}
.footer-social svg{width:17px;height:17px;}
.footer-nav h3,.footer-note h3{
  font-size:13px;font-weight:600;letter-spacing:.1em;color:var(--text-low);margin-bottom:16px;
}
.footer-links{display:grid;grid-template-columns:1fr 1fr;gap:10px 20px;}
.footer-links a{font-size:14px;color:var(--text-mid);transition:color var(--t);}
.footer-links a:hover{color:var(--accent);}
.footer-note p{font-size:13px;line-height:1.9;color:var(--text-low);}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;}
.footer-bottom p{font-size:13px;color:var(--text-low);}
.to-top{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;color:var(--text-mid);
  transition:color var(--t),border-color var(--t),transform var(--t);
}
.to-top:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-2px);}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --bg-deep:#050A14;
  --bg-panel:#0B1424;
  --bg-panel-2:#101D33;
  --line:rgba(255,255,255,.08);
  --text-hi:rgba(255,255,255,.94);
  --text-mid:rgba(255,255,255,.72);
  --text-low:rgba(255,255,255,.48);
  --primary:#2E6BFF;
  --primary-glow:rgba(46,107,255,.45);
  --accent:#25D8C0;
  --reward:#FF9A3D;
  --radius-card:16px;
  --radius-lg:24px;
  --shadow-card:0 10px 30px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-deep);
  color:var(--text-hi);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(680px 480px at 10% -8%, rgba(46,107,255,.14), transparent 70%),
    radial-gradient(560px 420px at 94% 4%, rgba(37,216,192,.08), transparent 72%);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
svg{display:block}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:rgba(46,107,255,.35);color:#fff}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}
@media(min-width:1280px){.container{padding:0 48px}}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(5,10,20,.78);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 12px 32px rgba(0,0,0,.45)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.logo{
  font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--text-hi);
  display:inline-flex;align-items:baseline;gap:9px;white-space:nowrap;
}
.logo small{
  font-size:10px;letter-spacing:.2em;color:var(--text-low);font-weight:600;
  transform:translateY(-1px);
}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{
  position:relative;font-size:14.5px;color:var(--text-mid);padding:26px 0;
  transition:color .2s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:50%;right:50%;bottom:16px;height:1px;
  background:var(--primary);transition:left .24s var(--ease),right .24s var(--ease),height .24s var(--ease);
}
.nav-links a:hover{color:var(--text-hi)}
.nav-links a:hover::after{left:0;right:0}
.nav-links a.active{color:var(--text-hi)}
.nav-links a.active::after{left:0;right:0;height:2px}
.nav-links a.active::before{
  content:"";position:absolute;left:-13px;top:50%;width:4px;height:4px;margin-top:-2px;
  border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary-glow);
}
.header-cta{display:flex;align-items:center;gap:12px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-size:14px;font-weight:600;padding:11px 22px;
  border:1px solid transparent;transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease);
  white-space:nowrap;
}
.btn-sm{padding:9px 18px;font-size:13px}
.btn-primary{
  background:linear-gradient(180deg,#3E79FF,#2E6BFF);color:#fff;
  box-shadow:0 0 0 1px rgba(46,107,255,.5),0 8px 28px rgba(46,107,255,.35);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(46,107,255,.6),0 12px 32px rgba(46,107,255,.45)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;border-color:rgba(255,255,255,.18);color:var(--text-hi);
}
.btn-ghost:hover{border-color:var(--accent);background:rgba(255,255,255,.04)}
.btn-block{width:100%;padding:15px 24px;font-size:15px}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);
}
.link-arrow span{position:relative}
.link-arrow span::after{
  content:"";position:absolute;left:0;right:100%;bottom:-3px;height:1px;background:currentColor;
  transition:right .24s var(--ease);
}
.link-arrow:hover span::after{right:0}
.link-arrow svg{width:15px;height:15px;transition:transform .24s var(--ease)}
.link-arrow:hover svg{transform:translateX(3px)}

.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  place-items:center;color:var(--text-hi);
}
.nav-toggle svg{width:20px;height:20px}
.nav-drawer{
  position:fixed;inset:0;z-index:70;display:none;flex-direction:column;
  background:rgba(4,8,16,.98);backdrop-filter:blur(8px);padding:20px 20px 36px;overflow-y:auto;
}
.nav-drawer.open{display:flex}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:56px;margin-bottom:12px}
.drawer-close{width:44px;height:44px;border:1px solid var(--line);border-radius:12px;display:grid;place-items:center;color:var(--text-hi)}
.drawer-close svg{width:18px;height:18px}
.drawer-links{margin-top:8px}
.drawer-links a{
  display:block;font-size:18px;line-height:56px;color:var(--text-mid);
  border-bottom:1px solid var(--line);border-left:3px solid transparent;padding-left:16px;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.drawer-links a:hover{color:var(--text-hi);background:rgba(255,255,255,.03)}
.drawer-links a.active{color:var(--text-hi);border-left-color:var(--primary);background:rgba(46,107,255,.07)}
.drawer-foot{margin-top:auto;padding-top:28px}
.drawer-foot p{font-size:13px;color:var(--text-low);line-height:1.8;margin-bottom:16px}

/* 面包屑与分类页头 */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-low)}
.breadcrumb a{color:var(--text-low);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:rgba(255,255,255,.22)}
.breadcrumb .current{color:var(--text-hi)}

.cat-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.cat-hero .hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center 30%;
  opacity:.3;
}
.cat-hero .hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(720px 420px at 18% 20%, rgba(46,107,255,.28), transparent 70%),
    radial-gradient(520px 360px at 88% 70%, rgba(37,216,192,.14), transparent 72%),
    linear-gradient(180deg, rgba(5,10,20,.55), rgba(5,10,20,.94));
}
.cat-hero .hero-grid{
  position:absolute;inset:0;opacity:.5;
  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:48px 48px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 85%);
}
.cat-hero-inner{position:relative;z-index:2;padding:56px 0 68px;min-height:360px;display:flex;flex-direction:column;justify-content:center}
.eyebrow{
  display:inline-flex;align-items:center;font-size:12px;letter-spacing:.12em;
  color:var(--text-mid);text-transform:uppercase;margin-bottom:18px;
}
.eyebrow::before{content:"";width:2px;height:12px;background:var(--primary);margin-right:10px;border-radius:2px}
.cat-hero h1{
  font-size:clamp(28px,4.2vw,46px);font-weight:700;line-height:1.18;letter-spacing:-.01em;
  max-width:19em;margin-top:20px;
}
.hero-sub{margin-top:18px;font-size:16px;line-height:1.85;color:var(--text-mid);max-width:640px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  font-size:12px;letter-spacing:.04em;padding:7px 14px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--text-mid);
}

/* 指标条 */
.metric-strip{background:var(--bg-panel);border-bottom:1px solid var(--line)}
.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
.metric{padding:30px 24px;border-left:1px solid var(--line)}
.metric:first-child{border-left:0}
.metric b{
  display:block;font-size:clamp(24px,3vw,38px);font-weight:700;line-height:1.1;
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.metric span{display:block;margin-top:8px;font-size:13px;color:var(--text-low);line-height:1.6}
.metric:nth-child(1) b{color:var(--primary)}
.metric:nth-child(2) b{color:var(--accent)}
.metric:nth-child(3) b{color:var(--reward)}
.metric:nth-child(4) b{color:var(--text-hi)}

/* 板块 */
.section{padding:88px 0}
.section-tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:52px}
.section-head h2{font-size:clamp(22px,2.6vw,34px);font-weight:700;line-height:1.28;letter-spacing:-.01em}
.section-head p{margin-top:16px;font-size:15px;line-height:1.9;color:var(--text-mid)}
.section-alt{background:var(--bg-panel-2);border-top:1px solid rgba(255,255,255,.06);border-bottom:1px solid rgba(255,255,255,.06)}

/* 左右交替图文 */
.zigzag{display:grid;gap:92px}
.zz-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.82fr);gap:56px;align-items:center}
.zz-row.reverse{grid-template-columns:minmax(0,.82fr) minmax(0,1fr)}
.zz-row.reverse .zz-media{order:-1}
.zz-media{position:relative;transform:translateY(-16px)}
.zz-row.reverse .zz-media{transform:translateY(16px)}
.zz-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-card);
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.zz-index{
  font-size:12px;letter-spacing:.12em;color:var(--text-low);margin-bottom:12px;
  display:inline-flex;align-items:center;gap:8px;
}
.zz-index i{font-style:normal;color:var(--primary);font-weight:700}
.zz-text h3{font-size:clamp(19px,2.2vw,24px);font-weight:600;line-height:1.4;margin-bottom:16px}
.zz-text p{font-size:15.5px;line-height:1.95;color:var(--text-mid)}
.zz-text p + p{margin-top:14px}
.zz-list{margin-top:22px}
.zz-list li{position:relative;padding-left:20px;font-size:15px;line-height:1.85;color:var(--text-mid);margin-bottom:11px}
.zz-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 8px var(--primary-glow);
}
.status-demo{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.chip{
  font-size:12px;padding:5px 14px;border-radius:999px;border:1px solid var(--line);
  color:var(--text-mid);background:rgba(255,255,255,.03);white-space:nowrap;
}
.chip-live{color:var(--primary);background:rgba(46,107,255,.12);border-color:rgba(46,107,255,.38)}
.chip-done{color:var(--accent);background:rgba(37,216,192,.12);border-color:rgba(37,216,192,.34)}
.chip-wait{color:var(--text-low);border-color:var(--line)}

/* 口径说明双栏 */
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.95fr);gap:48px;align-items:start}
.split p{font-size:15.5px;line-height:1.95;color:var(--text-mid)}
.split p + p{margin-top:14px}
.panel-card{
  background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.018));
  border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 26px 22px;
  backdrop-filter:blur(10px) saturate(140%);
}
.panel-card h3{font-size:16px;font-weight:600;margin-bottom:18px;display:flex;align-items:center;gap:9px}
.panel-card h3::before{content:"";width:2px;height:14px;background:var(--accent);border-radius:2px}
.def-list li{padding:13px 0;border-top:1px solid var(--line);display:flex;gap:14px;align-items:flex-start}
.def-list li:first-child{border-top:0;padding-top:0}
.def-list b{flex:0 0 80px;font-size:13.5px;font-weight:600;color:var(--text-hi)}
.def-list span{font-size:13.5px;line-height:1.8;color:var(--text-mid)}

/* FAQ */
.faq-wrap{max-width:880px}
.faq-item{border-bottom:1px solid var(--line);padding:22px 0}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  cursor:pointer;list-style:none;font-size:16px;font-weight:600;line-height:1.7;color:var(--text-hi);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{
  position:relative;flex:0 0 22px;height:22px;border:1px solid var(--line);border-radius:50%;
  margin-top:2px;transition:background .18s var(--ease),border-color .18s var(--ease);
}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--text-mid);transition:transform .18s var(--ease),opacity .18s var(--ease)}
.faq-icon::before{left:6px;right:6px;top:10px;height:1px}
.faq-icon::after{top:6px;bottom:6px;left:10px;width:1px}
.faq-item[open] .faq-icon{background:rgba(46,107,255,.16);border-color:rgba(46,107,255,.45)}
.faq-item[open] .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{padding-top:14px;font-size:15px;line-height:1.9;color:var(--text-mid);max-width:770px}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);border:1px solid var(--line);
  background:linear-gradient(140deg, rgba(46,107,255,.16), rgba(16,29,51,.9) 46%, rgba(37,216,192,.12));
  padding:64px 40px;text-align:center;margin:0 0 96px;
}
.cta-band::before{content:"";position:absolute;left:24px;right:24px;top:0;height:1px;background:rgba(255,255,255,.18)}
.cta-band h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.3;letter-spacing:-.01em}
.cta-band p{margin:16px auto 0;max-width:600px;font-size:15.5px;line-height:1.9;color:var(--text-mid)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:32px}

/* 页脚 */
.site-footer{position:relative;z-index:1;background:var(--bg-panel);border-top:1px solid var(--line)}
.footer-seg{padding:48px 0}
.footer-seg + .footer-seg{border-top:1px solid var(--line);padding:24px 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1.2fr;gap:48px}
.footer-brand .logo{font-size:16px}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.9;color:var(--text-mid);max-width:340px}
.footer-social{display:flex;gap:12px;margin-top:20px}
.footer-social a{
  width:38px;height:38px;border:1px solid var(--line);border-radius:50%;
  display:grid;place-items:center;color:var(--text-mid);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.footer-social a:hover{color:var(--accent);border-color:var(--accent);background:rgba(255,255,255,.04)}
.footer-social svg{width:18px;height:18px}
.footer-nav h3,.footer-note h3{font-size:14px;font-weight:600;color:var(--text-hi);margin-bottom:16px}
.footer-links{display:grid;grid-template-columns:1fr 1fr;gap:14px 24px}
.footer-links a{font-size:13.5px;color:var(--text-mid);transition:color .2s var(--ease)}
.footer-links a:hover{color:var(--text-hi)}
.footer-note p{font-size:13px;line-height:1.9;color:var(--text-low)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px}
.footer-bottom p{font-size:13px;color:var(--text-low);line-height:1.8}
.to-top{
  flex:0 0 40px;width:40px;height:40px;border:1px solid var(--line);border-radius:50%;
  display:grid;place-items:center;color:var(--text-mid);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.to-top:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-2px)}

/* 响应式 */
@media(max-width:1023px){
  .nav-links{display:none}
  .nav-toggle{display:grid}
  .header-cta .btn{display:none}
  .zz-row,.zz-row.reverse{grid-template-columns:minmax(0,1fr);gap:28px}
  .zz-row.reverse .zz-media{order:0}
  .zz-media,.zz-row.reverse .zz-media{transform:none}
  .split{grid-template-columns:minmax(0,1fr);gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .footer-note{grid-column:1 / -1}
  .zigzag{gap:64px}
}
@media(max-width:767px){
  .header-inner{height:64px}
  .logo{font-size:15px}
  .metric-grid{grid-template-columns:1fr 1fr}
  .metric{border-left:0;border-top:1px solid var(--line);padding:22px 18px}
  .metric:nth-child(1),.metric:nth-child(2){border-top:0}
  .metric:nth-child(even){border-left:1px solid var(--line)}
  .cat-hero-inner{padding:44px 0 52px;min-height:300px}
  .section{padding:64px 0}
  .zigzag{gap:56px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .footer-seg{padding:36px 0}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:16px}
  .cta-band{padding:44px 22px;margin-bottom:64px;border-radius:20px}
  .cta-actions{flex-direction:column;align-items:stretch}
  .cta-actions .btn{width:100%}
  .faq-item summary{font-size:15.5px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
:root{
    --bg-deep:#050A14;
    --bg-panel:#0B1424;
    --bg-panel-2:#101D33;
    --line:rgba(255,255,255,.08);
    --line-strong:rgba(255,255,255,.16);
    --text-hi:rgba(255,255,255,.94);
    --text-mid:rgba(255,255,255,.72);
    --text-low:rgba(255,255,255,.48);
    --primary:#2E6BFF;
    --primary-glow:rgba(46,107,255,.45);
    --accent:#25D8C0;
    --reward:#FF9A3D;
    --radius-card:16px;
    --radius-lg:24px;
    --radius-btn:10px;
    --shadow-card:0 10px 30px rgba(0,0,0,.45);
    --ease:cubic-bezier(.2,.7,.3,1);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body.site{
    margin:0;
    background:var(--bg-deep);
    color:var(--text-mid);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  body.site.drawer-open{overflow:hidden;}
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  h1,h2,h3,h4,p,ul,ol{margin:0;}
  ul{padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding:0 20px;
  }
  @media (min-width:768px){.container{padding:0 32px;}}
  @media (min-width:1280px){.container{padding:0 48px;}}

  .num{font-variant-numeric:tabular-nums;}

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(5,10,20,.82);
    backdrop-filter:blur(14px) saturate(140%);
    border-bottom:1px solid var(--line);
  }
  .header-inner{
    display:flex;
    align-items:center;
    gap:28px;
    height:72px;
  }
  .logo{
    font-size:17px;
    font-weight:700;
    color:var(--text-hi);
    letter-spacing:.01em;
    display:inline-flex;
    align-items:baseline;
    gap:8px;
    white-space:nowrap;
  }
  .logo small{
    font-size:10.5px;
    letter-spacing:.22em;
    color:var(--text-low);
    font-weight:600;
  }
  .nav-links{
    display:flex;
    align-items:center;
    gap:26px;
    margin-left:8px;
  }
  .nav-links a{
    position:relative;
    padding:26px 2px;
    font-size:14.5px;
    color:var(--text-mid);
    white-space:nowrap;
  }
  .nav-links a::after{
    content:"";
    position:absolute;
    left:50%;
    right:50%;
    bottom:18px;
    height:1px;
    background:var(--primary);
    transition:left .22s var(--ease),right .22s var(--ease);
  }
  .nav-links a:hover{color:var(--text-hi);}
  .nav-links a:hover::after{left:0;right:0;}
  .nav-links a.active{color:var(--text-hi);font-weight:600;}
  .nav-links a.active::after{
    left:0;right:0;height:2px;
    background:linear-gradient(90deg,var(--primary),var(--accent));
  }
  .nav-links a.active::before{
    content:"";
    position:absolute;
    left:-11px;
    top:50%;
    width:4px;height:4px;
    margin-top:-2px;
    border-radius:50%;
    background:var(--accent);
  }
  .header-actions{
    display:flex;
    align-items:center;
    gap:10px;
    margin-left:auto;
  }

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:44px;
    padding:0 22px;
    border-radius:999px;
    font-size:14.5px;
    font-weight:600;
    letter-spacing:.02em;
    transition:transform .2s var(--ease),filter .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
  }
  .btn-primary{
    background:linear-gradient(180deg,#4C7EFF,#2E6BFF);
    color:#fff;
    box-shadow:0 0 0 1px rgba(46,107,255,.5),0 8px 28px rgba(46,107,255,.35);
  }
  .btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(46,107,255,.6),0 12px 34px rgba(46,107,255,.45);}
  .btn-primary:active{transform:translateY(1px);}
  .btn-ghost{
    border:1px solid rgba(255,255,255,.18);
    color:var(--text-mid);
    background:transparent;
  }
  .btn-ghost:hover{border-color:var(--accent);color:var(--text-hi);background:rgba(255,255,255,.04);}
  .btn-sm{min-height:38px;padding:0 18px;font-size:13.5px;}

  .nav-toggle{
    display:none;
    width:44px;height:44px;
    align-items:center;
    justify-content:center;
    border:1px solid var(--line-strong);
    border-radius:10px;
    color:var(--text-mid);
  }
  .nav-toggle svg{width:20px;height:20px;}
  .drawer{
    display:none;
    position:fixed;
    inset:72px 0 0 0;
    background:rgba(5,10,20,.97);
    backdrop-filter:blur(16px);
    padding:18px 20px 40px;
    z-index:55;
    overflow-y:auto;
  }
  .drawer.open{display:block;}
  .drawer a.drawer-link{
    display:block;
    font-size:18px;
    line-height:56px;
    padding-left:14px;
    border-left:3px solid transparent;
    color:var(--text-mid);
    border-bottom:1px solid var(--line);
  }
  .drawer a.drawer-link.active{color:var(--text-hi);border-left-color:var(--accent);font-weight:600;}
  .drawer .drawer-cta{margin-top:24px;width:100%;}

  /* ---------- 内页 Hero ---------- */
  .page-hero{
    position:relative;
    overflow:hidden;
    padding:56px 0 52px;
    min-height:360px;
    border-bottom:1px solid var(--line);
    background:
      radial-gradient(680px 320px at 12% 0%,rgba(46,107,255,.16),transparent 70%),
      radial-gradient(520px 260px at 78% 18%,rgba(37,216,192,.08),transparent 72%),
      var(--bg-deep);
  }
  .page-hero::after{
    content:"";
    position:absolute;
    inset:0;
    background-image:url("/assets/images/backpic/back-3.webp");
    background-size:cover;
    background-position:center right;
    opacity:.16;
    mix-blend-mode:luminosity;
    pointer-events:none;
  }
  .hero-grid{
    position:relative;
    z-index:2;
    display:grid;
    grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
    gap:48px;
    align-items:center;
  }
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:10px;
    font-size:12px;
    letter-spacing:.12em;
    color:var(--text-low);
    text-transform:uppercase;
  }
  .eyebrow::before{content:"";width:2px;height:13px;background:var(--primary);display:inline-block;}
  .hero-title{
    margin:16px 0 14px;
    font-size:clamp(28px,4.6vw,52px);
    font-weight:700;
    line-height:1.15;
    letter-spacing:-.01em;
    color:var(--text-hi);
  }
  .hero-sub{
    font-size:16px;
    color:var(--text-mid);
    max-width:34em;
  }
  .breadcrumb{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:8px;
    margin-top:22px;
    font-size:13px;
    color:var(--text-low);
  }
  .breadcrumb a{color:var(--text-low);}
  .breadcrumb a:hover{color:var(--text-hi);}
  .breadcrumb span.sep{color:rgba(255,255,255,.24);}
  .breadcrumb .current{color:var(--text-hi);}
  .hero-media{
    position:relative;
    border-radius:var(--radius-lg);
    overflow:hidden;
    border:1px solid var(--line);
    box-shadow:var(--shadow-card);
    aspect-ratio:16/10;
    background:var(--bg-panel);
  }
  .hero-media img{width:100%;height:100%;object-fit:cover;opacity:.9;}
  .hero-media .media-tag{
    position:absolute;
    left:16px;
    bottom:16px;
    display:flex;
    gap:8px;
    flex-wrap:wrap;
  }

  /* ---------- 通用板块 ---------- */
  .section{padding:76px 0;}
  @media (min-width:1024px){.section{padding:104px 0;}}
  .section-panel{
    background:var(--bg-panel-2);
    border-top:1px solid rgba(255,255,255,.14);
    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:34px;
  }
  .section-head h2{
    font-size:clamp(22px,2.6vw,34px);
    font-weight:700;
    line-height:1.25;
    color:var(--text-hi);
  }
  .section-desc{
    margin-top:10px;
    font-size:14.5px;
    color:var(--text-mid);
    max-width:46em;
  }
  .text-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:14px;
    color:var(--text-mid);
    position:relative;
  }
  .text-link::after{
    content:"";
    position:absolute;
    left:0;right:100%;
    bottom:-3px;
    height:1px;
    background:currentColor;
    transition:right .22s var(--ease);
  }
  .text-link:hover{color:var(--accent);}
  .text-link:hover::after{right:0;}
  .text-link svg{width:15px;height:15px;transition:transform .2s var(--ease);}
  .text-link:hover svg{transform:translateX(2px);}

  /* ---------- 徽章 ---------- */
  .badge{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:3px 10px;
    border-radius:999px;
    font-size:12px;
    line-height:1.7;
    white-space:nowrap;
    border:1px solid transparent;
  }
  .badge-live{background:rgba(46,107,255,.14);color:#96B7FF;border-color:rgba(46,107,255,.34);}
  .badge-done{background:rgba(37,216,192,.12);color:#7FE9DA;border-color:rgba(37,216,192,.32);}
  .badge-wait{background:rgba(255,255,255,.05);color:var(--text-low);border-color:var(--line-strong);}
  .badge-dot{width:6px;height:6px;border-radius:50%;background:currentColor;display:inline-block;}
  .tag-plain{
    display:inline-flex;
    align-items:center;
    padding:3px 10px;
    border-radius:6px;
    font-size:12px;
    letter-spacing:.06em;
    color:var(--text-low);
    border:1px solid var(--line);
    background:rgba(255,255,255,.03);
  }

  /* ---------- 对照表区 ---------- */
  .spec-layout{
    display:grid;
    grid-template-columns:minmax(0,1.7fr) minmax(0,1fr);
    gap:32px;
    align-items:start;
  }
  .panel{
    background:var(--bg-panel);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
  }
  .panel-head{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    padding:20px 24px;
    border-bottom:1px solid var(--line);
  }
  .panel-head h3{font-size:17px;font-weight:600;color:var(--text-hi);}
  .panel-head .hint{font-size:12.5px;color:var(--text-low);}

  .table-scroll{
    overflow-x:auto;
    -webkit-overflow-scrolling:touch;
    border-bottom-left-radius:var(--radius-card);
    border-bottom-right-radius:var(--radius-card);
  }
  .spec-table{
    width:100%;
    min-width:660px;
    border-collapse:collapse;
    font-size:14.5px;
  }
  .spec-table thead th{
    background:var(--bg-panel-2);
    color:var(--text-low);
    font-size:12.5px;
    font-weight:600;
    letter-spacing:.08em;
    text-align:left;
    padding:14px 20px;
    white-space:nowrap;
    border-bottom:1px solid var(--line);
  }
  .spec-table tbody td{
    padding:16px 20px;
    border-bottom:1px solid var(--line);
    color:var(--text-mid);
    vertical-align:middle;
  }
  .spec-table tbody tr:nth-child(even){background:rgba(255,255,255,.02);}
  .spec-table tbody tr:hover{background:rgba(255,255,255,.04);}
  .spec-table tbody tr:last-child td{border-bottom:0;}
  .spec-table td.cell-name{color:var(--text-hi);font-weight:600;}
  .spec-table td.cell-num{font-variant-numeric:tabular-nums;color:var(--text-low);font-size:13px;}

  .side-col{display:flex;flex-direction:column;gap:20px;}
  .side-card{
    background:var(--bg-panel);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:22px;
  }
  .side-card h3{
    font-size:15.5px;
    font-weight:600;
    color:var(--text-hi);
    display:flex;
    align-items:center;
    gap:8px;
    margin-bottom:14px;
  }
  .side-card h3::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--primary);}
  .field-list li{
    display:flex;
    gap:12px;
    padding:11px 0;
    border-bottom:1px solid var(--line);
    font-size:14px;
  }
  .field-list li:last-child{border-bottom:0;padding-bottom:0;}
  .field-list .field-key{
    flex:0 0 68px;
    color:var(--text-hi);
    font-weight:600;
    font-size:13.5px;
  }
  .field-list .field-val{color:var(--text-mid);}
  .side-media{
    border-radius:12px;
    overflow:hidden;
    border:1px solid var(--line);
    aspect-ratio:16/10;
    background:var(--bg-panel-2);
  }
  .side-media img{width:100%;height:100%;object-fit:cover;opacity:.82;}
  .side-caption{font-size:13px;color:var(--text-low);margin-top:12px;line-height:1.7;}
  .tip-list li{
    position:relative;
    padding-left:18px;
    margin-bottom:10px;
    font-size:14px;
    color:var(--text-mid);
  }
  .tip-list li:last-child{margin-bottom:0;}
  .tip-list li::before{
    content:"";
    position:absolute;
    left:0;top:.75em;
    width:6px;height:6px;
    border-radius:50%;
    background:var(--accent);
    opacity:.8;
  }

  /* ---------- 数据条 ---------- */
  .stat-strip{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:0;
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    overflow:hidden;
    background:var(--bg-panel);
    box-shadow:var(--shadow-card);
  }
  .stat-item{
    padding:26px 24px;
    border-right:1px solid var(--line);
  }
  .stat-item:last-child{border-right:0;}
  .stat-num{
    font-size:clamp(24px,3vw,40px);
    font-weight:700;
    color:var(--text-hi);
    line-height:1.1;
    font-variant-numeric:tabular-nums;
  }
  .stat-label{
    margin-top:8px;
    font-size:13px;
    color:var(--text-low);
    letter-spacing:.04em;
  }
  .stat-item.is-accent .stat-num{color:var(--accent);}
  .stat-item.is-reward .stat-num{color:var(--reward);}

  /* ---------- 状态说明表 ---------- */
  .state-table{
    width:100%;
    min-width:620px;
    border-collapse:collapse;
    font-size:14.5px;
  }
  .state-table thead th{
    background:var(--bg-panel-2);
    color:var(--text-low);
    font-size:12.5px;
    font-weight:600;
    letter-spacing:.08em;
    text-align:left;
    padding:14px 20px;
    border-bottom:1px solid var(--line);
    white-space:nowrap;
  }
  .state-table tbody td{
    padding:18px 20px;
    border-bottom:1px solid var(--line);
    color:var(--text-mid);
    vertical-align:top;
  }
  .state-table tbody tr:last-child td{border-bottom:0;}
  .state-table tbody tr:hover{background:rgba(255,255,255,.035);}
  .state-table td.state-mean{color:var(--text-hi);}

  /* ---------- FAQ 双列 ---------- */
  .faq-grid{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:20px;
  }
  .faq-card{
    background:var(--bg-panel);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:24px;
    transition:border-color .2s var(--ease),transform .2s var(--ease);
  }
  .faq-card:hover{border-color:var(--line-strong);transform:translateY(-2px);}
  .faq-card h3{
    font-size:16px;
    font-weight:600;
    color:var(--text-hi);
    margin-bottom:10px;
    display:flex;
    gap:10px;
  }
  .faq-card h3 .q-mark{
    color:var(--primary);
    font-weight:700;
    flex:0 0 auto;
  }
  .faq-card p{font-size:15px;color:var(--text-mid);line-height:1.8;}

  /* ---------- CTA ---------- */
  .cta-wrap{padding:0 0 88px;}
  .cta-band{
    position:relative;
    overflow:hidden;
    border-radius:var(--radius-lg);
    border:1px solid rgba(255,255,255,.12);
    background:linear-gradient(180deg,rgba(46,107,255,.14),rgba(11,20,36,.6) 70%);
    padding:56px 32px;
    text-align:center;
    box-shadow:var(--shadow-card);
  }
  .cta-band::before{
    content:"";
    position:absolute;
    left:0;right:0;top:0;
    height:1px;
    background:linear-gradient(90deg,transparent,rgba(255,255,255,.34),transparent);
  }
  .cta-band h2{
    font-size:clamp(22px,2.6vw,32px);
    font-weight:700;
    color:var(--text-hi);
  }
  .cta-band p{
    margin:12px auto 26px;
    max-width:36em;
    font-size:15px;
    color:var(--text-mid);
  }
  .cta-actions{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:center;
    gap:14px;
  }

  /* ---------- 页脚 ---------- */
  .site-footer{
    border-top:1px solid var(--line);
    background:var(--bg-deep);
    padding-top:56px;
  }
  .footer-seg{padding:34px 0;border-bottom:1px solid var(--line);}
  .footer-seg:last-child{border-bottom:0;}
  .footer-grid{
    display:grid;
    grid-template-columns:minmax(0,1.3fr) minmax(0,1fr) minmax(0,1.2fr);
    gap:40px;
  }
  .footer-brand .logo{font-size:18px;}
  .footer-brand p{
    margin-top:14px;
    font-size:13.5px;
    color:var(--text-low);
    line-height:1.9;
    max-width:32em;
  }
  .footer-social{display:flex;gap:12px;margin-top:18px;}
  .footer-social a{
    width:44px;height:44px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    border:1px solid var(--line-strong);
    border-radius:50%;
    color:var(--text-low);
  }
  .footer-social a:hover{color:var(--accent);border-color:var(--accent);}
  .footer-social svg{width:18px;height:18px;}
  .footer-nav h3,.footer-note h3{
    font-size:13px;
    font-weight:600;
    letter-spacing:.1em;
    color:var(--text-hi);
    margin-bottom:16px;
  }
  .footer-links{display:grid;grid-template-columns:1fr;gap:14px;}
  .footer-links a{font-size:13.5px;color:var(--text-low);}
  .footer-links a:hover{color:var(--text-hi);}
  .footer-note p{font-size:13px;color:var(--text-low);line-height:1.9;}
  .footer-bottom{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding:22px 0 34px;
    border-top:1px solid var(--line);
  }
  .footer-bottom p{font-size:13px;color:var(--text-low);}
  .to-top{
    width:44px;height:44px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    border:1px solid var(--line-strong);
    border-radius:50%;
    color:var(--text-low);
  }
  .to-top:hover{color:var(--accent);border-color:var(--accent);}

  /* ---------- 入场动效 ---------- */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
  .reveal.in{opacity:1;transform:none;}

  /* ---------- 响应式 ---------- */
  @media (max-width:1023px){
    .nav-links{display:none;}
    .nav-toggle{display:inline-flex;margin-left:auto;}
    .header-actions{margin-left:0;}
    .header-actions .btn-ghost{display:none;}
    .hero-grid{grid-template-columns:1fr;gap:32px;}
    .hero-media{aspect-ratio:16/9;max-height:260px;}
    .spec-layout{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr 1fr;}
    .footer-brand{grid-column:1 / -1;}
    .faq-grid{grid-template-columns:1fr;}
  }
  @media (max-width:640px){
    .header-inner{height:64px;gap:14px;}
    .drawer{inset:64px 0 0 0;}
    .logo{font-size:15.5px;}
    .page-hero{padding:40px 0 40px;min-height:0;}
    .section{padding:60px 0;}
    .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
    .stat-item{border-right:0;border-bottom:1px solid var(--line);}
    .stat-item:nth-child(odd){border-right:1px solid var(--line);}
    .stat-item:nth-last-child(-n+2){border-bottom:0;}
    .cta-band{padding:40px 20px;}
    .footer-grid{grid-template-columns:1fr;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;}
    .reveal{opacity:1;transform:none;}
  }

/* roulang page: category4 */
:root{
    --bg-deep:#050A14;
    --bg-panel:#0B1424;
    --bg-panel-2:#101D33;
    --line:rgba(255,255,255,.08);
    --text-hi:rgba(255,255,255,.94);
    --text-mid:rgba(255,255,255,.72);
    --text-low:rgba(255,255,255,.48);
    --primary:#2E6BFF;
    --primary-glow:rgba(46,107,255,.45);
    --accent:#25D8C0;
    --reward:#FF9A3D;
    --radius-card:16px;
    --radius-lg:24px;
    --shadow-card:0 10px 30px rgba(0,0,0,.45);
    --ease:cubic-bezier(.2,.7,.3,1);
  }

  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--bg-deep);
    color:var(--text-mid);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block}
  a{color:inherit}
  button{font-family:inherit}
  h1,h2,h3,h4{color:var(--text-hi);margin:0;line-height:1.25}
  h1{font-size:clamp(30px,4.4vw,48px);font-weight:700;letter-spacing:-.01em;line-height:1.15}
  h2{font-size:clamp(22px,2.6vw,34px);font-weight:700}
  h3{font-size:19px;font-weight:600}
  p{margin:0}
  ul{margin:0;padding:0;list-style:none}

  :focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media (min-width:768px){.container{padding:0 32px}}
  @media (min-width:1280px){.container{padding:0 48px}}

  .section{padding:64px 0}
  @media (min-width:1024px){.section{padding:96px 0}}
  .section-panel{background:var(--bg-panel-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

  .eyebrow{
    display:inline-flex;align-items:center;gap:10px;
    font-size:12px;letter-spacing:.12em;color:var(--text-low);
    text-transform:uppercase;
  }
  .eyebrow::before{content:"";width:2px;height:12px;background:var(--primary);display:block}

  .sec-head{display:flex;flex-wrap:wrap;gap:20px;align-items:flex-end;justify-content:space-between;margin-bottom:36px}
  .sec-head p{max-width:620px;color:var(--text-mid);font-size:15px;margin-top:12px}

  .text-link{
    display:inline-flex;align-items:center;gap:6px;
    color:var(--text-hi);font-size:14px;font-weight:600;text-decoration:none;
    position:relative;padding-bottom:2px;
  }
  .text-link::after{
    content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
    background:var(--accent);transition:width 220ms var(--ease);
  }
  .text-link:hover::after{width:100%}
  .text-link svg{transition:transform 220ms var(--ease)}
  .text-link:hover svg{transform:translateX(3px)}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:0 24px;border-radius:999px;
    font-size:15px;font-weight:600;text-decoration:none;cursor:pointer;
    border:1px solid transparent;white-space:nowrap;
    transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),background 200ms var(--ease),border-color 200ms var(--ease),filter 200ms var(--ease);
  }
  .btn-primary{
    background:var(--primary);color:#fff;
    box-shadow:0 0 0 1px rgba(46,107,255,.5),0 8px 28px rgba(46,107,255,.35);
  }
  .btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(46,107,255,.6),0 12px 34px rgba(46,107,255,.45)}
  .btn-primary:active{transform:translateY(1px)}
  .btn-ghost{
    background:transparent;border-color:rgba(255,255,255,.18);color:var(--text-hi);
  }
  .btn-ghost:hover{border-color:var(--accent);background:rgba(255,255,255,.04)}
  .btn-ghost:active{transform:translateY(1px)}
  .btn-sm{min-height:40px;padding:0 18px;font-size:14px}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(5,10,20,.84);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    border-bottom:1px solid var(--line);
  }
  .nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
  .logo{
    display:inline-flex;align-items:baseline;gap:8px;
    font-size:18px;font-weight:700;color:var(--text-hi);text-decoration:none;letter-spacing:-.01em;
  }
  .logo small{font-size:11px;letter-spacing:.18em;color:var(--text-low);font-weight:600}
  .nav-links{display:none;align-items:center;gap:30px}
  .nav-links a{
    position:relative;font-size:15px;color:var(--text-mid);text-decoration:none;
    padding:8px 2px;transition:color 200ms var(--ease);
  }
  .nav-links a::after{
    content:"";position:absolute;left:50%;bottom:2px;height:1px;width:0;
    background:var(--primary);transform:translateX(-50%);
    transition:width 220ms var(--ease);
  }
  .nav-links a:hover{color:var(--text-hi)}
  .nav-links a:hover::after{width:100%}
  .nav-links a.active{color:var(--text-hi);font-weight:600}
  .nav-links a.active::after{width:24px;height:2px;background:var(--primary)}
  .nav-links a.active::before{
    content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
    width:4px;height:4px;border-radius:50%;background:var(--accent);
  }
  .nav-actions{display:none;align-items:center;gap:12px}
  .nav-toggle{
    display:inline-flex;align-items:center;justify-content:center;
    width:44px;height:44px;border-radius:12px;
    background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text-hi);
    cursor:pointer;transition:border-color 200ms var(--ease),background 200ms var(--ease);
  }
  .nav-toggle:hover{border-color:rgba(46,107,255,.5);background:rgba(46,107,255,.08)}
  @media (min-width:1024px){
    .nav-links{display:flex}
    .nav-actions{display:flex}
    .nav-toggle{display:none}
  }

  .drawer{
    position:fixed;left:0;right:0;top:72px;bottom:0;z-index:55;
    background:#050A14;padding:20px 20px 32px;
    display:flex;flex-direction:column;
    opacity:0;transform:translateY(-10px);pointer-events:none;
    transition:opacity 220ms var(--ease),transform 220ms var(--ease);
    overflow-y:auto;
  }
  .drawer.open{opacity:1;transform:none;pointer-events:auto}
  .drawer a.drawer-link{
    position:relative;display:block;font-size:18px;line-height:56px;
    color:var(--text-mid);text-decoration:none;padding-left:16px;
    border-bottom:1px solid var(--line);
  }
  .drawer a.drawer-link.active{color:var(--text-hi);font-weight:600}
  .drawer a.drawer-link.active::before{
    content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
    background:var(--primary);border-radius:2px;
  }
  .drawer .drawer-cta{margin-top:24px;width:100%}
  @media (min-width:1024px){.drawer{display:none}}

  /* ---------- Hero ---------- */
  .page-hero{
    position:relative;overflow:hidden;
    padding:56px 0;
    border-bottom:1px solid var(--line);
    display:flex;align-items:center;
    min-height:340px;
  }
  @media (min-width:1024px){.page-hero{min-height:400px;padding:72px 0}}
  .hero-bg{
    position:absolute;inset:0;
    background:url(/assets/images/backpic/back-2.png) right center/cover no-repeat;
    opacity:.30;
    -webkit-mask-image:linear-gradient(90deg,transparent 0%,rgba(0,0,0,.55) 52%,#000 100%);
    mask-image:linear-gradient(90deg,transparent 0%,rgba(0,0,0,.55) 52%,#000 100%);
  }
  .hero-glow{
    position:absolute;inset:0;
    background:
      radial-gradient(560px 240px at 84% 16%,rgba(46,107,255,.20),transparent 70%),
      radial-gradient(420px 200px at 10% 92%,rgba(37,216,192,.10),transparent 70%);
  }
  .hero-inner{position:relative;z-index:2;max-width:780px}
  .breadcrumb{font-size:13px;color:var(--text-low);margin-bottom:20px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
  .breadcrumb a{color:var(--text-mid);text-decoration:none;transition:color 200ms var(--ease)}
  .breadcrumb a:hover{color:var(--accent)}
  .breadcrumb .sep{color:rgba(255,255,255,.24)}
  .breadcrumb .current{color:var(--text-hi)}
  .hero-sub{margin-top:18px;font-size:16px;color:var(--text-mid);max-width:640px}
  .hero-stats{display:flex;flex-wrap:wrap;gap:16px 28px;margin-top:32px}
  .hero-stat{display:flex;align-items:baseline;gap:8px}
  .hero-stat b{font-size:clamp(20px,2.4vw,26px);color:var(--text-hi);font-weight:700;font-variant-numeric:tabular-nums}
  .hero-stat span{font-size:13px;color:var(--text-low)}
  .hero-stat + .hero-stat{border-left:1px solid var(--line);padding-left:28px}
  @media (max-width:640px){
    .hero-stat + .hero-stat{border-left:0;padding-left:0}
  }

  /* ---------- 引言 ---------- */
  .intro-grid{display:grid;gap:28px}
  @media (min-width:1024px){
    .intro-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:start}
  }
  .intro-grid p{font-size:16px;line-height:1.9;color:var(--text-mid)}
  .intro-grid p + p{margin-top:18px}

  /* ---------- 机制卡片 ---------- */
  .card-grid{display:grid;grid-template-columns:1fr;gap:22px}
  @media (min-width:640px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media (min-width:1100px){.card-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
  .sec-card{
    display:flex;flex-direction:column;
    background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--radius-card);
    overflow:hidden;
    transition:transform 220ms var(--ease),border-color 220ms var(--ease),box-shadow 220ms var(--ease);
  }
  .sec-card:hover{transform:translateY(-2px);border-color:rgba(46,107,255,.42);box-shadow:var(--shadow-card)}
  .sec-card figure{margin:0;aspect-ratio:16/10;overflow:hidden;background:#08101E}
  .sec-card img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease)}
  .sec-card:hover img{transform:scale(1.03)}
  .sec-card .card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
  .sec-card h3{font-size:18px}
  .sec-card .card-desc{font-size:14px;color:var(--text-mid);line-height:1.75}
  .sec-card .card-foot{margin-top:auto;padding-top:14px;font-size:12.5px;color:var(--text-low);border-top:1px solid var(--line);font-variant-numeric:tabular-nums}

  .chip{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
    font-size:12px;letter-spacing:.02em;
    background:rgba(46,107,255,.12);color:#9CBAFF;border:1px solid rgba(46,107,255,.26);
  }
  .chip-accent{background:rgba(37,216,192,.12);color:#7FE9DA;border-color:rgba(37,216,192,.26)}
  .chip-reward{background:rgba(255,154,61,.12);color:#FFC58A;border-color:rgba(255,154,61,.28)}
  .chip-plain{background:rgba(255,255,255,.05);color:var(--text-low);border-color:var(--line)}

  /* ---------- FAQ 混合区 ---------- */
  .faq-layout{display:grid;gap:32px;align-items:start}
  @media (min-width:1024px){
    .faq-layout{grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:40px}
  }
  .faq-panel{
    background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--radius-lg);
    padding:8px 24px;
  }
  @media (min-width:768px){.faq-panel{padding:8px 28px}}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-item:last-child{border-bottom:0}
  .faq-item summary{
    list-style:none;cursor:pointer;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:20px 2px;font-size:16px;font-weight:600;color:var(--text-hi);
    min-height:44px;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:hover{color:#fff}
  .faq-item .sign{
    flex:0 0 auto;width:26px;height:26px;border-radius:50%;
    border:1px solid var(--line);display:grid;place-items:center;
    color:var(--accent);font-size:15px;line-height:1;
    transition:transform 200ms var(--ease),background 200ms var(--ease),border-color 200ms var(--ease);
  }
  .faq-item .sign::before{content:"+"}
  .faq-item[open] .sign{transform:rotate(180deg);background:rgba(37,216,192,.10);border-color:rgba(37,216,192,.35)}
  .faq-item[open] .sign::before{content:"−"}
  .faq-item .answer{padding:0 2px 22px;font-size:15px;line-height:1.85;color:var(--text-mid)}

  .side-col{display:flex;flex-direction:column;gap:22px}
  .side-card{
    background:var(--bg-panel-2);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:24px;
  }
  .side-card h3{font-size:17px;margin-bottom:6px}
  .side-card .side-note{font-size:13px;color:var(--text-low);margin-bottom:16px}
  .step-list{display:flex;flex-direction:column;gap:14px}
  .step-list li{display:flex;gap:12px;font-size:14px;color:var(--text-mid)}
  .step-list li b{
    flex:0 0 auto;width:24px;height:24px;border-radius:8px;
    border:1px solid rgba(46,107,255,.35);color:#9CBAFF;font-size:12px;font-weight:700;
    display:grid;place-items:center;font-variant-numeric:tabular-nums;
  }
  .verify-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);font-size:14px}
  .verify-row:last-child{border-bottom:0}
  .verify-row span{color:var(--text-mid)}

  /* ---------- 自查清单 ---------- */
  .check-grid{display:grid;grid-template-columns:1fr;gap:18px}
  @media (min-width:640px){.check-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
  .check-item{
    display:flex;gap:16px;
    background:var(--bg-panel);border:1px solid var(--line);border-radius:14px;padding:22px;
    transition:border-color 220ms var(--ease),background 220ms var(--ease);
  }
  .check-item:hover{border-color:rgba(255,154,61,.35);background:#0D1727}
  .check-num{
    flex:0 0 auto;width:34px;height:34px;border-radius:10px;
    border:1px solid rgba(255,154,61,.35);color:var(--reward);
    display:grid;place-items:center;font-size:14px;font-weight:700;
  }
  .check-item h3{font-size:16px;margin-bottom:6px}
  .check-item p{font-size:14px;color:var(--text-mid);line-height:1.75}

  /* ---------- CTA ---------- */
  .cta-band{
    position:relative;overflow:hidden;
    border-radius:var(--radius-lg);border:1px solid var(--line);
    background:linear-gradient(150deg,#0B1424 0%,#12213A 55%,#0B1424 100%);
    padding:52px 24px;text-align:center;
  }
  @media (min-width:768px){.cta-band{padding:64px 56px}}
  .cta-band::before{
    content:"";position:absolute;top:0;left:0;right:0;height:1px;
    background:linear-gradient(90deg,transparent,rgba(255,255,255,.30),transparent);
  }
  .cta-band::after{
    content:"";position:absolute;width:420px;height:220px;left:50%;top:-90px;transform:translateX(-50%);
    background:radial-gradient(closest-side,rgba(46,107,255,.28),transparent 72%);
    pointer-events:none;
  }
  .cta-band .cta-inner{position:relative;z-index:2}
  .cta-band p{margin:16px auto 0;max-width:620px;font-size:15px;color:var(--text-mid)}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:32px}

  /* ---------- 页脚 ---------- */
  .site-footer{background:#040810;border-top:1px solid var(--line);margin-top:0}
  .footer-seg{padding:48px 0}
  .footer-seg + .footer-seg{border-top:1px solid var(--line);padding:22px 0}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:34px}
  @media (min-width:900px){.footer-grid{grid-template-columns:1.4fr 1fr 1.2fr;gap:44px}}
  .footer-brand .logo{font-size:17px}
  .footer-brand p{margin-top:14px;font-size:14px;color:var(--text-low);line-height:1.9;max-width:360px}
  .footer-social{display:flex;gap:10px;margin-top:18px}
  .footer-social a{
    width:38px;height:38px;border-radius:50%;
    border:1px solid var(--line);display:grid;place-items:center;
    color:var(--text-mid);
    transition:border-color 200ms var(--ease),color 200ms var(--ease),background 200ms var(--ease);
  }
  .footer-social a:hover{border-color:var(--accent);color:var(--accent);background:rgba(37,216,192,.06)}
  .footer-social svg{width:17px;height:17px}
  .footer-nav h3,.footer-note h3{font-size:14px;color:var(--text-hi);margin-bottom:16px;letter-spacing:.02em}
  .footer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 20px}
  .footer-links a{font-size:13.5px;color:var(--text-low);text-decoration:none;transition:color 200ms var(--ease)}
  .footer-links a:hover{color:var(--text-hi)}
  .footer-note p{font-size:13px;color:var(--text-low);line-height:1.9}
  .footer-bottom{display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between}
  .footer-bottom p{font-size:12.5px;color:var(--text-low);line-height:1.8}
  .to-top{
    width:38px;height:38px;border-radius:50%;border:1px solid var(--line);
    display:grid;place-items:center;color:var(--text-mid);text-decoration:none;
    transition:border-color 200ms var(--ease),color 200ms var(--ease),background 200ms var(--ease);
  }
  .to-top:hover{border-color:var(--primary);color:#fff;background:rgba(46,107,255,.12)}

  @media (prefers-reduced-motion:no-preference){
    .reveal{opacity:0;transform:translateY(12px);transition:opacity 600ms var(--ease),transform 600ms var(--ease)}
    .reveal.in{opacity:1;transform:none}
  }
  @media (prefers-reduced-motion:reduce){
    *{animation:none !important;transition:none !important}
    html{scroll-behavior:auto}
  }