/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --bg-0:#070B14;
  --bg-1:#0C1322;
  --bg-2:#121A2B;
  --glass:rgba(255,255,255,.045);
  --glass-border:rgba(255,255,255,.10);
  --primary:#16E0B0;
  --primary-deep:#0B8F73;
  --accent:#FFB020;
  --text-1:#F2F6FA;
  --text-2:#A9B6C6;
  --text-3:#6B7A8D;
  --line:rgba(255,255,255,.08);
  --success:#34D399;
  --danger:#FF6B6B;
  --r-card:16px;
  --r-btn:12px;
  --shadow-card:0 12px 32px rgba(0,0,0,.35);
  --shadow-card-hover:0 18px 44px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sidebar:264px;
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:96px;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease)}
h1,h2,h3,h4,p,ol,ul,figure{margin:0;padding:0}
ol,ul{list-style:none}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
summary{list-style:none;cursor:pointer}
summary::-webkit-details-marker{display:none}
.num,.stat-num,.num-idx{font-variant-numeric:tabular-nums}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--primary);outline-offset:2px;border-radius:8px;
}
::selection{background:rgba(22,224,176,.3);color:#fff}

/* ============ 布局外壳 ============ */
.app-shell{min-height:100vh}
.main-wrap{
  margin-left:var(--sidebar);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px}

/* ============ 左侧导航 ============ */
.side-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar);
  background:var(--bg-1);
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  padding:0 16px 20px;
  z-index:60;
}
.brand{
  height:72px;
  display:flex;
  align-items:center;
  gap:10px;
  padding:0 8px;
  flex:0 0 auto;
}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  display:flex;align-items:center;justify-content:center;
  color:#04140F;font-weight:800;font-size:16px;letter-spacing:-.03em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-text strong{color:var(--text-1);font-size:18px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.brand-text em{color:var(--text-3);font-size:11px;font-style:normal;letter-spacing:.06em;white-space:nowrap}

.nav-group{margin-top:12px}
.nav-group-title{
  font-size:11px;letter-spacing:.16em;color:var(--text-3);
  padding:8px 14px 6px;text-transform:uppercase;
}
.nav-list{display:flex;flex-direction:column;gap:6px}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:12px;
  height:44px;padding:0 14px;
  border-radius:12px;
  font-size:15px;color:var(--text-2);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.nav-item svg{width:20px;height:20px;flex:0 0 20px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--text-1)}
.nav-item.active{background:rgba(22,224,176,.10);color:var(--primary);font-weight:600}
.nav-item.active::before{
  content:"";position:absolute;left:-16px;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--primary);
}
.side-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:10px}
.side-foot .btn{width:100%}
.side-note{font-size:12px;color:var(--text-3);line-height:1.6;text-align:center}

/* ============ 移动端顶栏 ============ */
.mobile-bar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:60px;z-index:70;
  align-items:center;justify-content:space-between;
  padding:0 16px;
  background:rgba(7,11,20,.92);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.mobile-brand{display:flex;align-items:center;gap:8px}
.mobile-brand .brand-mark{width:30px;height:30px;flex:0 0 30px;border-radius:9px;font-size:14px}
.mobile-brand strong{color:var(--text-1);font-size:15px;font-weight:800}
.hamburger{
  width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--glass-border);background:var(--glass);
}
.hamburger svg{width:20px;height:20px;stroke:var(--text-1);stroke-width:1.8;fill:none;stroke-linecap:round}
.nav-mask{
  display:none;position:fixed;inset:0;z-index:55;
  background:rgba(4,8,14,.7);
  -webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);
}
.nav-mask.show{display:block}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,#16E0B0,#0B8F73);
  color:#04140F;
  box-shadow:0 0 0 1px rgba(22,224,176,.35),0 8px 28px rgba(22,224,176,.22);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(22,224,176,.5),0 14px 34px rgba(22,224,176,.34);color:#04140F}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;color:var(--text-1);
  border-color:var(--glass-border);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.btn-ghost:hover{border-color:rgba(22,224,176,.6);background:rgba(22,224,176,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-size:14px;font-weight:600;margin-top:18px;
}
.link-more svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s var(--ease)}
.link-more:hover svg{transform:translateX(3px)}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(22,224,176,.12);color:var(--primary);
  border:1px solid rgba(22,224,176,.28);white-space:nowrap;
}
.badge--amber{background:rgba(255,176,32,.12);color:var(--accent);border-color:rgba(255,176,32,.3)}
.badge--plain{background:rgba(255,255,255,.05);color:var(--text-2);border-color:var(--glass-border)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}

/* ============ 板块 ============ */
.sec{padding:96px 0;position:relative}
.sec--panel{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:44px}
.sec-title{color:var(--text-1);font-size:30px;line-height:1.3;font-weight:700;letter-spacing:-.01em}
.sec-desc{color:var(--text-2);font-size:15px;margin-top:12px;max-width:720px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;color:var(--primary);
  margin-bottom:14px;font-weight:600;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--primary);display:block}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:88px 0 64px;
  overflow:hidden;
  background:
    radial-gradient(900px 460px at 82% -10%,rgba(22,224,176,.13),transparent 62%),
    linear-gradient(180deg,#070B14 0%,#0A1020 100%);
}
.hero-grid-bg{
  position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(700px 380px at 70% 10%,#000,transparent 80%);
  mask-image:radial-gradient(700px 380px at 70% 10%,#000,transparent 80%);
}
.hero-inner{position:relative;z-index:2}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:999px;
  background:rgba(22,224,176,.10);
  border:1px solid rgba(22,224,176,.26);
  color:var(--primary);font-size:13px;font-weight:600;
}
.hero-title{
  color:var(--text-1);
  font-size:44px;line-height:1.2;font-weight:800;letter-spacing:-.02em;
  margin:22px 0 0;
}
.hero-sub{
  color:var(--primary);
  font-size:19px;font-weight:600;line-height:1.6;
  margin-top:16px;
}
.hero-lead{
  color:var(--text-2);font-size:16px;line-height:1.75;
  margin-top:16px;max-width:640px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-visual{position:relative;margin-top:8px}
.hero-shot{
  position:relative;border-radius:20px;overflow:hidden;
  border:1px solid var(--glass-border);
  background:var(--bg-2);
  box-shadow:var(--shadow-card);
}
.hero-shot img{width:100%;height:340px;object-fit:cover;opacity:.92}
.hero-shot::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,.10),rgba(7,11,20,.72));
}
.hero-float{
  position:absolute;z-index:3;
  display:flex;align-items:center;gap:10px;
  padding:12px 16px;border-radius:14px;
  background:rgba(18,26,43,.78);
  border:1px solid var(--glass-border);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  box-shadow:0 12px 32px rgba(0,0,0,.4);
}
.hero-float strong{display:block;color:var(--text-1);font-size:14px;font-weight:700;line-height:1.3}
.hero-float em{display:block;color:var(--text-3);font-size:12px;font-style:normal;line-height:1.4}
.hero-float--a{left:-18px;bottom:56px}
.hero-float--b{right:-10px;top:28px;flex-direction:column;gap:2px;align-items:flex-start}
.hero-float--b strong{font-size:20px;color:var(--primary)}
.hero-float .dot{width:8px;height:8px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 4px rgba(22,224,176,.18)}
.hero-stats{
  margin-top:56px;
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);border-radius:16px;
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  overflow:hidden;
}
.hero-stat{padding:22px 24px;border-right:1px solid var(--line)}
.hero-stat:last-child{border-right:0}
.hero-stat strong{display:block;color:var(--text-1);font-size:28px;font-weight:800;letter-spacing:-.02em;line-height:1.2}
.hero-stat span{display:block;color:var(--text-3);font-size:13px;margin-top:6px}

/* ============ 序号列表 ============ */
.num-list{display:flex;flex-direction:column;gap:8px}
.num-item{
  display:flex;gap:20px;align-items:flex-start;
  padding:22px 24px;border-radius:16px;
  border:1px solid var(--line);
  background:var(--glass);
  transition:border-color .18s var(--ease),background .18s var(--ease),transform .18s var(--ease);
}
.num-item:hover{border-color:rgba(22,224,176,.4);background:rgba(22,224,176,.05);transform:translateX(4px)}
.num-idx{color:var(--accent);font-size:15px;font-weight:800;letter-spacing:.04em;flex:0 0 32px;padding-top:2px}
.num-body h3{color:var(--text-1);font-size:18px;font-weight:600;line-height:1.4}
.num-body p{color:var(--text-2);font-size:14px;line-height:1.7;margin-top:6px}

/* ============ 功能分组 ============ */
.feature-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:24px}
.feature-card{
  grid-column:span 2;
  display:flex;flex-direction:column;
  padding:26px 24px;border-radius:16px;
  background:var(--glass);
  border:1px solid var(--glass-border);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);border-color:rgba(22,224,176,.35)}
.feature-card--wide{grid-column:span 3;padding:0;overflow:hidden;flex-direction:row}
.feature-card--wide .feature-media{flex:0 0 44%;position:relative;min-height:230px}
.feature-card--wide .feature-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.feature-card--wide .feature-body{padding:28px 26px;display:flex;flex-direction:column;justify-content:center}
.feature-card--half{grid-column:span 3}
.icon-block{
  width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(22,224,176,.10);
  border:1px solid rgba(22,224,176,.22);
  margin-bottom:16px;
}
.icon-block svg{width:22px;height:22px;stroke:var(--primary);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.feature-card h3{color:var(--text-1);font-size:19px;font-weight:600;line-height:1.4}
.feature-card p{color:var(--text-2);font-size:14px;line-height:1.72;margin-top:10px}
.feature-meta{margin-top:18px;display:flex;flex-wrap:wrap;gap:8px}

/* ============ 场景图文 ============ */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:34px 0}
.scene + .scene{border-top:1px solid var(--line)}
.scene-visual{border-radius:16px;overflow:hidden;border:1px solid var(--glass-border);background:var(--bg-2);box-shadow:var(--shadow-card)}
.scene-visual img{width:100%;height:280px;object-fit:cover}
.scene-body h3{color:var(--text-1);font-size:22px;font-weight:700;line-height:1.35}
.scene-body p{color:var(--text-2);font-size:15px;line-height:1.75;margin-top:14px}
.scene.rev .scene-visual{order:2}
.scene.rev .scene-body{order:1}

/* ============ 案例 ============ */
.case-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:24px}
.case-main{
  border-radius:16px;padding:32px;
  background:linear-gradient(150deg,rgba(22,224,176,.12),rgba(18,26,43,.6) 55%),var(--bg-2);
  border:1px solid rgba(22,224,176,.24);
  display:flex;flex-direction:column;justify-content:space-between;
  box-shadow:var(--shadow-card);
}
.case-main blockquote{color:var(--text-1);font-size:19px;line-height:1.65;font-weight:600;letter-spacing:-.01em}
.case-main cite{display:block;margin-top:20px;color:var(--text-3);font-size:13px;font-style:normal}
.case-side{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.case-small{
  border-radius:16px;padding:24px;
  background:var(--glass);
  border:1px solid var(--glass-border);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  display:flex;flex-direction:column;justify-content:center;
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.case-small:hover{transform:translateY(-4px);border-color:rgba(22,224,176,.35)}
.case-small p{color:var(--text-1);font-size:15px;line-height:1.7;font-weight:600}
.case-small span{color:var(--text-3);font-size:12px;margin-top:12px}

/* ============ 价格 ============ */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{
  position:relative;
  display:flex;flex-direction:column;
  padding:30px 26px;border-radius:16px;
  background:var(--glass);
  border:1px solid var(--glass-border);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover)}
.price-card--hot{
  border-color:rgba(22,224,176,.55);
  box-shadow:0 0 0 1px rgba(22,224,176,.3),0 16px 44px rgba(22,224,176,.18);
  background:linear-gradient(180deg,rgba(22,224,176,.09),rgba(18,26,43,.7));
}
.price-tag{position:absolute;top:-12px;right:24px}
.price-card h3{color:var(--text-1);font-size:18px;font-weight:700}
.price-amount{display:flex;align-items:baseline;gap:6px;margin:18px 0 6px}
.price-amount strong{color:var(--text-1);font-size:38px;font-weight:800;letter-spacing:-.03em;line-height:1}
.price-amount em{font-style:normal;color:var(--text-3);font-size:14px}
.price-note{color:var(--text-3);font-size:13px;line-height:1.6}
.price-list{margin:22px 0 26px;display:flex;flex-direction:column;gap:12px}
.price-list li{display:flex;gap:10px;align-items:flex-start;color:var(--text-2);font-size:14px;line-height:1.6}
.price-list li::before{
  content:"";flex:0 0 16px;height:16px;margin-top:4px;border-radius:50%;
  background:rgba(22,224,176,.14);
  box-shadow:inset 0 0 0 1px rgba(22,224,176,.45);
}
.price-card .btn{margin-top:auto;width:100%}

/* ============ 内容列表（CMS） ============ */
.news-grid{margin-top:-12px}
.news-card{
  height:100%;
  display:flex;flex-direction:column;
  border-radius:16px;overflow:hidden;
  background:var(--bg-2);
  border:1px solid var(--glass-border);
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.news-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-card-hover);border-color:rgba(22,224,176,.35)}
.news-cover{display:block;position:relative;height:170px;overflow:hidden;background:var(--bg-1)}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.news-card:hover .news-cover img{transform:scale(1.05)}
.news-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(7,11,20,.72))}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.news-body h3{
  color:var(--text-1);font-size:17px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  min-height:51px;
}
.news-body h3 a:hover{color:var(--primary)}
.news-excerpt{
  color:var(--text-2);font-size:14px;line-height:1.7;margin-top:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:16px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid var(--line);margin-top:18px;
}
.news-foot time{color:var(--text-3);font-size:13px;font-variant-numeric:tabular-nums}
.news-read{color:var(--primary);font-size:13px;font-weight:600;display:inline-flex;align-items:center;gap:4px}
.news-read svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s var(--ease)}
.news-card:hover .news-read svg{transform:translateX(3px)}
.empty-state{
  border:1px dashed rgba(255,255,255,.16);
  border-radius:16px;padding:56px 24px;text-align:center;
  background:var(--glass);
}
.empty-state .icon-block{margin:0 auto 16px}
.empty-state p{color:var(--text-2);font-size:15px}
.empty-state .btn{margin-top:22px}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{
  border-radius:16px;
  background:var(--glass);
  border:1px solid var(--glass-border);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  overflow:hidden;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.faq-item:hover{border-color:rgba(22,224,176,.3)}
.faq-item[open]{border-color:rgba(22,224,176,.45);background:rgba(22,224,176,.05)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;
  color:var(--text-1);font-size:16px;font-weight:600;line-height:1.5;
}
.faq-icon{
  position:relative;flex:0 0 24px;width:24px;height:24px;border-radius:50%;
  background:rgba(22,224,176,.12);
  box-shadow:inset 0 0 0 1px rgba(22,224,176,.35);
  transition:transform .18s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:10px;height:2px}
.faq-icon::after{width:2px;height:10px;transition:opacity .18s var(--ease)}
.faq-item[open] .faq-icon{transform:rotate(180deg)}
.faq-item[open] .faq-icon::after{opacity:0}
.faq-body{padding:0 24px 22px;color:var(--text-2);font-size:15px;line-height:1.78;max-width:760px}

/* ============ 尾部 CTA ============ */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  padding:36px 40px;border-radius:20px;
  background:linear-gradient(120deg,rgba(22,224,176,.14),rgba(18,26,43,.72));
  border:1px solid rgba(22,224,176,.3);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
}
.cta-band h2{color:var(--text-1);font-size:26px;font-weight:700;line-height:1.35}
.cta-band p{color:var(--text-2);font-size:15px;margin-top:10px;max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:auto;
  background:var(--bg-1);
  border-top:1px solid var(--line);
  padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:48px}
.footer-brand-name{color:var(--text-1);font-size:20px;font-weight:800;letter-spacing:-.01em}
.footer-brand p{color:var(--text-2);font-size:14px;line-height:1.75;margin-top:14px;max-width:420px}
.footer-col h4{color:var(--text-1);font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{color:var(--text-2);font-size:14px;line-height:1.6}
.footer-col a{color:var(--text-2);font-size:14px}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:var(--text-3);font-size:13px;
}

/* ============ 响应式 ============ */
@media (min-width:1024px) and (max-width:1199px){
  :root{--sidebar:248px}
  .hero-title{font-size:38px}
  .cta-band{padding:32px 28px}
}
@media (max-width:1023px){
  .side-nav{
    width:280px;
    transform:translateX(-100%);
    transition:transform .22s var(--ease);
    box-shadow:0 0 60px rgba(0,0,0,.6);
  }
  .side-nav.open{transform:translateX(0)}
  .main-wrap{margin-left:0;padding-top:60px}
  .mobile-bar{display:flex}
  .container{padding-left:20px;padding-right:20px}
  .sec{padding:72px 0}
  .hero{padding:56px 0 48px}
  .hero-title{font-size:34px}
  .hero-shot img{height:300px}
  .hero-float--a{left:8px}
  .hero-float--b{right:8px}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .hero-stat:nth-child(2){border-right:0}
  .hero-stat:nth-child(1),.hero-stat:nth-child(2){border-bottom:1px solid var(--line)}
  .scene{grid-template-columns:1fr;gap:26px;padding:28px 0}
  .scene.rev .scene-visual{order:0}
  .scene.rev .scene-body{order:0}
  .case-grid{grid-template-columns:1fr}
  .price-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:767px){
  .feature-grid{grid-template-columns:1fr}
  .feature-card,.feature-card--wide,.feature-card--half{grid-column:span 1}
  .feature-card--wide{flex-direction:column}
  .feature-card--wide .feature-media{flex:none;height:200px;min-height:0;position:relative}
  .hero-title{font-size:30px;margin-top:18px}
  .hero-sub{font-size:17px}
  .sec-title{font-size:24px}
  .sec-head{margin-bottom:32px}
  .cta-band{padding:26px 20px}
  .cta-band h2{font-size:22px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;margin-top:32px}
  .nav-item.active::before{left:-16px}
}
@media (max-width:519px){
  .hero-stats{grid-template-columns:1fr}
  .hero-stat{border-right:0}
  .hero-stat:nth-child(3){border-bottom:1px solid var(--line)}
  .btn{width:100%}
  .hero-actions .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .news-foot{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --bg-0:#070B14;
  --bg-1:#0C1322;
  --bg-2:#121A2B;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.07);
  --glass-border:rgba(255,255,255,.10);
  --primary:#16E0B0;
  --primary-deep:#0B8F73;
  --accent:#FFB020;
  --text-1:#F2F6FA;
  --text-2:#A9B6C6;
  --text-3:#6B7A8D;
  --line:rgba(255,255,255,.08);
  --danger:#FF6B6B;
  --success:#34D399;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-pill:999px;
  --shadow-card:0 12px 32px rgba(0,0,0,.35);
  --shadow-hover:0 18px 44px rgba(0,0,0,.45);
  --sidebar-w:264px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
@media (min-width:1200px) and (max-width:1439px){ :root{ --sidebar-w:248px; } }
@media (min-width:1024px) and (max-width:1199px){ :root{ --sidebar-w:88px; } }

*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text-2);
  background:var(--bg-0);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{ max-width:100%; display:block; height:auto; }
a{ color:inherit; text-decoration:none; }
button,input,textarea{ font-family:inherit; font-size:inherit; }
ul,ol{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ margin:0; color:var(--text-1); font-weight:700; line-height:1.3; }
p{ margin:0; }
::selection{ background:rgba(22,224,176,.28); color:#fff; }
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
  border-radius:8px;
}

/* ---------- 侧边栏 App Shell ---------- */
.app-shell{ min-height:100vh; }
.sidebar{
  position:fixed; top:0; left:0; bottom:0; width:var(--sidebar-w);
  display:flex; flex-direction:column;
  padding:20px 16px 18px;
  background:linear-gradient(180deg,#0B1220 0%,#070C16 100%);
  border-right:1px solid var(--line);
  z-index:60;
  transition:width .22s var(--ease), transform .24s var(--ease);
}
.brand{
  display:flex; align-items:center; gap:10px;
  height:52px; padding:0 8px; border-radius:14px;
  transition:background .18s var(--ease);
}
.brand:hover{ background:rgba(255,255,255,.05); }
.brand-mark{
  flex:0 0 auto;
  width:36px; height:36px; border-radius:11px;
  display:grid; place-items:center;
  font-size:16px; font-weight:800; color:#04140F;
  background:linear-gradient(135deg,#16E0B0,#0B8F73);
  box-shadow:0 0 0 1px rgba(22,224,176,.35), 0 8px 22px rgba(22,224,176,.22);
}
.brand-text{ display:flex; flex-direction:column; line-height:1.15; overflow:hidden; }
.brand-main{ font-size:18px; font-weight:800; color:var(--text-1); letter-spacing:-.01em; white-space:nowrap; }
.brand-sub{ font-size:11px; color:var(--text-3); letter-spacing:.16em; white-space:nowrap; }

.nav-group{ margin-top:26px; }
.nav-group-title{
  font-size:11px; letter-spacing:.2em; color:var(--text-3);
  padding:0 12px 10px; text-transform:uppercase;
}
.nav-list{ display:flex; flex-direction:column; gap:6px; }
.nav-item{
  position:relative;
  display:flex; align-items:center; gap:12px;
  height:44px; padding:0 12px; border-radius:12px;
  font-size:15px; color:var(--text-2);
  transition:background .18s var(--ease), color .18s var(--ease);
}
.nav-item svg{
  width:20px; height:20px; flex:0 0 auto;
  fill:none; stroke:currentColor; stroke-width:1.6;
  stroke-linecap:round; stroke-linejoin:round;
}
.nav-item:hover{ background:rgba(255,255,255,.05); color:var(--text-1); }
.nav-item.active{ background:rgba(22,224,176,.10); color:var(--primary); }
.nav-item.active::before{
  content:""; position:absolute; left:-16px; top:50%;
  transform:translateY(-50%);
  width:3px; height:22px; border-radius:0 3px 3px 0;
  background:var(--primary);
}
.sidebar-foot{ margin-top:auto; padding-top:18px; border-top:1px solid var(--line); }
.sidebar-foot .btn{ width:100%; height:44px; font-size:14px; }
.sidebar-note{ margin-top:12px; font-size:12px; color:var(--text-3); line-height:1.6; padding:0 4px; }

/* ---------- 移动端顶栏与抽屉 ---------- */
.mobile-bar{
  position:fixed; top:0; left:0; right:0; height:60px;
  display:none; align-items:center; justify-content:space-between;
  padding:0 16px;
  background:rgba(7,11,20,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  z-index:70;
}
.mobile-brand{ display:flex; align-items:center; gap:9px; }
.mobile-brand .brand-mark{ width:32px; height:32px; border-radius:10px; font-size:14px; }
.mobile-brand .brand-main{ font-size:16px; }
.mobile-brand .brand-sub{ font-size:10px; letter-spacing:.1em; }
.burger{
  width:44px; height:44px; border-radius:12px;
  display:grid; place-items:center;
  background:var(--glass); border:1px solid var(--glass-border);
  cursor:pointer;
}
.burger span{ display:block; width:18px; height:1.6px; background:var(--text-1); border-radius:2px; }
.burger span + span{ margin-top:5px; }
.scrim{
  position:fixed; inset:0; background:rgba(4,8,14,.7);
  opacity:0; visibility:hidden; transition:opacity .2s var(--ease), visibility .2s;
  z-index:80;
}
.scrim.open{ opacity:1; visibility:visible; }
.drawer{
  position:fixed; top:0; left:0; bottom:0; width:280px;
  padding:20px 16px 24px; overflow-y:auto;
  background:linear-gradient(180deg,#0B1220 0%,#070C16 100%);
  border-right:1px solid var(--line);
  transform:translateX(-100%);
  transition:transform .24s var(--ease);
  z-index:90;
}
.drawer.open{ transform:none; }
.drawer-close{
  margin-left:auto; width:36px; height:36px; border-radius:10px;
  display:grid; place-items:center; cursor:pointer;
  background:var(--glass); border:1px solid var(--glass-border); color:var(--text-1);
  font-size:16px; line-height:1;
}
.drawer-head{ display:flex; align-items:center; gap:10px; margin-bottom:8px; }

/* ---------- 主区域 ---------- */
.main-area{
  margin-left:var(--sidebar-w);
  min-height:100vh;
  transition:margin-left .22s var(--ease);
}
.page-wrap{
  max-width:1200px;
  margin:0 auto;
  padding:36px 32px 96px;
}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:48px; padding:0 24px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px; font-weight:700;
  cursor:pointer;
  transition:transform .18s var(--ease), box-shadow .18s var(--ease), background .18s var(--ease), border-color .18s var(--ease), color .18s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,#16E0B0,#0B8F73);
  color:#04140F;
  box-shadow:0 0 0 1px rgba(22,224,176,.35), 0 8px 28px rgba(22,224,176,.22);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(22,224,176,.5), 0 12px 34px rgba(22,224,176,.3);
}
.btn-primary:active{ transform:translateY(-1px); }
.btn-ghost{
  background:transparent;
  border:1px solid var(--glass-border);
  color:var(--text-1);
}
.btn-ghost:hover{ border-color:rgba(22,224,176,.5); background:rgba(22,224,176,.08); color:var(--primary); }
.btn-ghost:active{ transform:translateY(1px); }
.btn-sm{ height:40px; padding:0 18px; font-size:14px; }

.text-link{
  display:inline-flex; align-items:center; gap:6px;
  color:var(--primary); font-weight:600; font-size:14px;
  transition:color .18s var(--ease);
}
.text-link svg{ width:14px; height:14px; fill:none; stroke:currentColor; stroke-width:2; stroke-linecap:round; stroke-linejoin:round; transition:transform .18s var(--ease); }
.text-link:hover svg{ transform:translateX(3px); }

.badge{
  display:inline-flex; align-items:center;
  height:26px; padding:0 12px;
  border-radius:var(--radius-pill);
  font-size:12px; font-weight:600; letter-spacing:.02em;
  background:var(--glass);
  border:1px solid var(--glass-border);
  color:var(--text-2);
}
.badge-primary{
  background:rgba(22,224,176,.12);
  border-color:rgba(22,224,176,.35);
  color:var(--primary);
}
.badge-accent{
  background:rgba(255,176,32,.12);
  border-color:rgba(255,176,32,.35);
  color:var(--accent);
}

.card{
  background:var(--bg-2);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}
.card:hover{ transform:translateY(-4px); box-shadow:var(--shadow-hover); border-color:rgba(22,224,176,.28); }

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex; flex-wrap:wrap; align-items:center; gap:8px;
  font-size:13px; color:var(--text-3);
  margin-bottom:22px;
}
.breadcrumb a{ color:var(--text-3); transition:color .18s var(--ease); }
.breadcrumb a:hover{ color:var(--primary); }
.breadcrumb .sep{ color:rgba(255,255,255,.18); }
.breadcrumb .current{
  color:var(--text-2);
  max-width:420px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap;
}

/* ---------- 文章头部 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 280px;
  gap:48px;
  align-items:start;
}
.article-header{
  padding-bottom:28px;
  border-bottom:1px solid var(--line);
  margin-bottom:34px;
}
.article-badges{ display:flex; flex-wrap:wrap; gap:8px; margin-bottom:16px; }
.article-header h1{
  font-size:40px;
  line-height:1.22;
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--text-1);
  margin-bottom:18px;
}
.article-meta{
  display:flex; flex-wrap:wrap; align-items:center; gap:14px;
  font-size:13px; color:var(--text-3);
}
.article-meta .dot{ width:4px; height:4px; border-radius:50%; background:rgba(255,255,255,.2); }
.article-cover{
  margin-top:26px;
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--glass-border);
  box-shadow:var(--shadow-card);
}
.article-cover img{ width:100%; aspect-ratio:16/7; object-fit:cover; }

/* ---------- 正文 ---------- */
.article-body{ max-width:760px; }
.article-body p{
  font-size:16px; line-height:1.75; color:var(--text-2);
  margin:0 0 1.15em;
}
.article-body h2{
  position:relative;
  font-size:26px; font-weight:700; color:var(--text-1);
  line-height:1.35;
  margin:44px 0 16px;
  padding-left:16px;
}
.article-body h2::before{
  content:""; position:absolute; left:0; top:.3em;
  width:3px; height:22px; border-radius:2px;
  background:var(--primary);
}
.article-body h3{
  font-size:20px; font-weight:600; color:var(--text-1);
  margin:30px 0 12px;
}
.article-body h4{
  font-size:17px; font-weight:600; color:var(--text-1);
  margin:22px 0 10px;
}
.article-body ul,.article-body ol{ margin:0 0 1.15em; padding-left:22px; }
.article-body ul{ list-style:none; padding-left:0; }
.article-body ul li{
  position:relative; padding-left:20px; margin-bottom:.6em;
  font-size:16px; line-height:1.7; color:var(--text-2);
}
.article-body ul li::before{
  content:""; position:absolute; left:2px; top:.72em;
  width:6px; height:6px; border-radius:2px;
  background:var(--primary); opacity:.85;
}
.article-body ol{ list-style:decimal; }
.article-body ol li{ margin-bottom:.6em; line-height:1.7; color:var(--text-2); }
.article-body ol li::marker{ color:var(--primary); font-weight:700; }
.article-body blockquote{
  margin:26px 0;
  background:var(--glass);
  border-left:3px solid var(--primary);
  border-radius:0 var(--radius-btn) var(--radius-btn) 0;
  padding:18px 22px;
  color:var(--text-2);
}
.article-body blockquote p:last-child{ margin-bottom:0; }
.article-body img{
  border-radius:12px;
  border:1px solid var(--glass-border);
  margin:22px 0;
}
.article-body a{
  color:var(--primary);
  border-bottom:1px solid rgba(22,224,176,.35);
  transition:border-color .18s var(--ease);
}
.article-body a:hover{ border-color:var(--primary); }
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:24px 0;
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-btn);
  overflow:hidden;
  font-size:15px;
}
.article-body th,.article-body td{
  padding:12px 16px;
  text-align:left;
  border-bottom:1px solid var(--line);
}
.article-body th{ color:var(--text-1); font-weight:600; background:rgba(255,255,255,.03); }
.article-body tr:last-child td{ border-bottom:none; }
.article-body code{
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:8px;
  padding:2px 7px;
  font-size:14px;
  color:var(--primary);
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.article-body pre{
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:12px;
  padding:18px 20px;
  overflow-x:auto;
  margin:22px 0;
}
.article-body pre code{ background:none; border:none; padding:0; color:var(--text-2); }
.article-body hr{ border:none; border-top:1px solid var(--line); margin:36px 0; }

.empty-state{
  padding:48px 32px;
  text-align:center;
  background:var(--glass);
  border:1px dashed var(--glass-border);
  border-radius:var(--radius-card);
}
.empty-state h2{ font-size:22px; margin-bottom:12px; padding:0; }
.empty-state h2::before{ display:none; }
.empty-state p{ margin-bottom:22px; }

/* ---------- 文末 ---------- */
.article-foot{
  max-width:760px;
  margin-top:40px; padding-top:26px;
  border-top:1px solid var(--line);
  display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:18px;
}
.tag-row{ display:flex; flex-wrap:wrap; gap:8px; }
.share-row{ display:flex; align-items:center; gap:10px; font-size:13px; color:var(--text-3); }
.share-btn{
  width:38px; height:38px; border-radius:11px;
  display:grid; place-items:center;
  background:var(--glass); border:1px solid var(--glass-border);
  color:var(--text-2); cursor:pointer;
  transition:all .18s var(--ease);
}
.share-btn:hover{ color:var(--primary); border-color:rgba(22,224,176,.45); background:rgba(22,224,176,.08); }
.share-btn svg{ width:17px; height:17px; fill:none; stroke:currentColor; stroke-width:1.7; stroke-linecap:round; stroke-linejoin:round; }

.back-row{ max-width:760px; margin-top:26px; }

/* ---------- 右侧栏 ---------- */
.article-aside{ position:sticky; top:32px; display:flex; flex-direction:column; gap:18px; }
.aside-card{
  background:var(--bg-2);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-card);
  padding:20px;
  box-shadow:var(--shadow-card);
}
.aside-card h3{
  font-size:14px; font-weight:700; color:var(--text-1);
  letter-spacing:.04em; margin-bottom:14px;
  display:flex; align-items:center; gap:8px;
}
.aside-card h3::before{
  content:""; width:3px; height:14px; border-radius:2px; background:var(--primary);
}
.toc-list li{ margin-bottom:4px; }
.toc-list a{
  display:block;
  font-size:13.5px; line-height:1.6;
  padding:7px 10px; border-radius:9px;
  color:var(--text-2);
  border-left:2px solid transparent;
  transition:all .18s var(--ease);
}
.toc-list a:hover{ background:rgba(255,255,255,.05); color:var(--text-1); }
.toc-list a.active{ color:var(--primary); background:rgba(22,224,176,.09); border-left-color:var(--primary); }
.toc-empty{ font-size:13px; color:var(--text-3); }
.aside-links li + li{ border-top:1px solid var(--line); }
.aside-links a{
  display:block; padding:12px 0;
  font-size:14px; line-height:1.6; color:var(--text-2);
  transition:color .18s var(--ease);
}
.aside-links a:hover{ color:var(--primary); }

/* ---------- 相关推荐 ---------- */
.section{ margin-top:76px; }
.section-head{
  display:flex; flex-wrap:wrap; align-items:flex-end; justify-content:space-between; gap:16px;
  margin-bottom:26px;
}
.section-head h2{
  font-size:26px; font-weight:700; letter-spacing:-.01em;
}
.section-head p{ font-size:14px; color:var(--text-3); margin-top:8px; }

.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.post-card{ overflow:hidden; display:flex; flex-direction:column; }
.post-thumb{ position:relative; overflow:hidden; }
.post-thumb img{ width:100%; aspect-ratio:16/9; object-fit:cover; transition:transform .3s var(--ease); }
.post-card:hover .post-thumb img{ transform:scale(1.04); }
.post-thumb::after{
  content:""; position:absolute; inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,0) 40%,rgba(7,11,20,.65) 100%);
}
.post-body{ padding:20px 22px 24px; display:flex; flex-direction:column; gap:12px; flex:1; }
.post-body h3{
  font-size:17px; font-weight:600; line-height:1.5; color:var(--text-1);
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;
}
.post-body p{
  font-size:14px; line-height:1.7; color:var(--text-2);
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;
}
.post-meta{
  display:flex; align-items:center; justify-content:space-between;
  margin-top:auto; padding-top:14px; border-top:1px solid var(--line);
  font-size:12.5px; color:var(--text-3);
}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:76px;
  padding:40px 36px;
  display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:24px;
  background:linear-gradient(120deg,rgba(22,224,176,.10),rgba(18,26,43,.9) 55%);
  border:1px solid rgba(22,224,176,.22);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:""; position:absolute; inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:44px 44px;
  pointer-events:none;
}
.cta-band > *{ position:relative; }
.cta-band h2{ font-size:24px; margin-bottom:8px; }
.cta-band p{ font-size:14.5px; color:var(--text-2); max-width:560px; }
.cta-actions{ display:flex; flex-wrap:wrap; gap:14px; }

/* ---------- 页脚 ---------- */
.site-footer{
  margin-left:var(--sidebar-w);
  border-top:1px solid var(--line);
  background:var(--bg-1);
  padding:56px 0 28px;
  transition:margin-left .22s var(--ease);
}
.site-footer .container{
  max-width:1200px; margin:0 auto; padding:0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr;
  gap:40px;
}
.footer-brand-name{
  font-size:18px; font-weight:800; color:var(--text-1);
  margin-bottom:14px; letter-spacing:-.01em;
}
.footer-brand p{ font-size:14px; line-height:1.75; color:var(--text-3); max-width:380px; }
.footer-col h4{
  font-size:13px; font-weight:700; color:var(--text-1);
  letter-spacing:.14em; margin-bottom:16px;
}
.footer-col ul li{
  font-size:14px; color:var(--text-3); line-height:1.9;
}
.footer-col ul li a{ color:var(--text-3); transition:color .18s var(--ease); }
.footer-col ul li a:hover{ color:var(--primary); }
.footer-bottom{
  margin-top:40px; padding-top:20px;
  border-top:1px solid var(--line);
  display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:12px;
  font-size:13px; color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .article-layout{ grid-template-columns:minmax(0,1fr); gap:0; }
  .article-aside{ position:static; margin-top:48px; }
  .article-body, .article-foot, .back-row{ max-width:none; }
}
@media (min-width:1024px) and (max-width:1199px){
  .brand-text, .nav-group-title{ display:none; }
  .sidebar{ align-items:center; }
  .nav-item{ justify-content:center; padding:0; width:48px; }
  .nav-item span{ display:none; }
  .nav-item.active::before{ left:-20px; }
  .brand{ justify-content:center; padding:0; }
  .sidebar-foot .btn{ padding:0; width:48px; font-size:0; }
  .sidebar-note{ display:none; }
}
@media (max-width:1023px){
  .sidebar{ transform:translateX(-100%); }
  .sidebar.open{ transform:none; }
  .mobile-bar{ display:flex; }
  .main-area{ margin-left:0; padding-top:60px; }
  .site-footer{ margin-left:0; }
  .page-wrap{ padding:24px 18px 72px; }
  .site-footer .container{ padding:0 18px; }
  .article-header h1{ font-size:28px; }
  .article-cover img{ aspect-ratio:16/9; }
  .article-body h2{ font-size:22px; margin-top:36px; }
  .article-body h3{ font-size:18px; }
  .section{ margin-top:60px; }
  .related-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); gap:18px; }
  .footer-grid{ grid-template-columns:1fr; gap:28px; }
  .cta-band{ padding:30px 22px; }
  .cta-band h2{ font-size:20px; }
}
@media (max-width:640px){
  .article-header h1{ font-size:24px; }
  .article-meta{ font-size:12px; gap:10px; }
  .article-body p, .article-body ul li, .article-body ol li{ font-size:15.5px; }
  .related-grid{ grid-template-columns:minmax(0,1fr); }
  .section-head h2{ font-size:22px; }
  .cta-actions{ width:100%; }
  .cta-actions .btn{ width:100%; }
  .article-foot{ flex-direction:column; align-items:flex-start; }
  .breadcrumb .current{ max-width:200px; }
}
@media (prefers-reduced-motion:reduce){
  *{ transition:none !important; animation:none !important; scroll-behavior:auto !important; }
}

/* roulang page: category1 */
:root{
  --bg-0:#070B14;
  --bg-1:#0C1322;
  --bg-2:#121A2B;
  --glass:rgba(255,255,255,.045);
  --glass-line:rgba(255,255,255,.10);
  --primary:#16E0B0;
  --primary-deep:#0B8F73;
  --accent:#FFB020;
  --text-1:#F2F6FA;
  --text-2:#A9B6C6;
  --text-3:#6B7A8D;
  --line:rgba(255,255,255,.08);
  --danger:#FF6B6B;
  --success:#34D399;
  --radius-card:16px;
  --radius-btn:12px;
  --shadow-card:0 12px 32px rgba(0,0,0,.35);
  --shadow-card-hover:0 18px 44px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(22,224,176,.35), 0 8px 28px rgba(22,224,176,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sidebar-w:264px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
@media (max-width:1439.98px){:root{--sidebar-w:248px}}
@media (max-width:1199.98px){:root{--sidebar-w:88px}}
@media (max-width:1023.98px){:root{--sidebar-w:0px}}

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

html{-webkit-text-size-adjust:100%}

body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img{max-width:100%;display:block;border-radius:12px}
a{color:var(--primary);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:#5CF0CB}
h1,h2,h3,h4{color:var(--text-1);margin:0;line-height:1.3}
p{margin:0 0 1.15em}
ul{margin:0;padding:0;list-style:none}
button,input,textarea,select{font:inherit;color:inherit}

:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%}

/* ---------- App shell ---------- */
.app-sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:linear-gradient(180deg,#0A101E 0%,#080D18 100%);
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  z-index:50;
  transition:transform .22s var(--ease),width .2s var(--ease);
}
.sidebar-brand{height:72px;display:flex;align-items:center;padding:0 20px;border-bottom:1px solid var(--line);flex:0 0 auto}
.brand-link{display:flex;align-items:center;gap:12px;color:var(--text-1)}
.brand-mark{
  width:38px;height:38px;flex:0 0 auto;border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04140F;font-weight:800;font-size:14px;letter-spacing:.02em;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 18px rgba(22,224,176,.25);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-line-1{font-size:18px;font-weight:800;color:var(--text-1);letter-spacing:-.01em}
.brand-line-2{font-size:11px;color:var(--text-3);letter-spacing:.14em}

.sidebar-scroll{flex:1 1 auto;overflow-y:auto;padding:20px 14px}
.sidebar-scroll::-webkit-scrollbar{width:6px}
.sidebar-scroll::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:99px}

.nav-group-title{
  font-size:11px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--text-3);margin:0 0 10px 10px;
}
.nav-list{display:flex;flex-direction:column;gap:6px}
.nav-item{
  display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:12px;
  color:var(--text-2);font-size:15px;
  position:relative;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.nav-item svg{
  width:20px;height:20px;flex:0 0 auto;
  fill:none;stroke:currentColor;stroke-width:1.6;
  stroke-linecap:round;stroke-linejoin:round;
}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--text-1)}
.nav-item.active{
  background:rgba(22,224,176,.10);
  color:var(--primary);
  font-weight:600;
}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--primary);
}

.sidebar-foot{
  flex:0 0 auto;padding:16px 14px 20px;border-top:1px solid var(--line);
}
.sidebar-note{margin:12px 0 0;font-size:11px;color:var(--text-3);line-height:1.5}
.cta-mini{display:none}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;border:1px solid transparent;
  cursor:pointer;text-align:center;white-space:nowrap;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,#16E0B0 0%,#0B8F73 100%);
  color:#04140F;
  box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);color:#04140F;box-shadow:0 0 0 1px rgba(22,224,176,.5),0 12px 34px rgba(22,224,176,.30)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;border-color:var(--glass-line);color:var(--text-1);
}
.btn-ghost:hover{background:rgba(22,224,176,.08);border-color:var(--primary);color:var(--text-1);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-block{width:100%}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}

.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary)}
.text-link i{font-size:12px;transition:transform .18s var(--ease)}
.text-link:hover i{transform:translateX(3px)}

/* ---------- Badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(22,224,176,.12);color:var(--primary);
  border:1px solid rgba(22,224,176,.28);
}
.badge-accent{background:rgba(255,176,32,.12);color:var(--accent);border-color:rgba(255,176,32,.30)}
.badge-muted{background:rgba(255,255,255,.06);color:var(--text-2);border-color:var(--glass-line)}

/* ---------- Layout ---------- */
.app-main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}
main{flex:1 1 auto}

.mobile-bar{
  display:none;height:60px;align-items:center;justify-content:space-between;
  padding:0 16px;background:rgba(8,13,24,.92);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  position:fixed;top:0;left:0;right:0;z-index:55;
}
.mobile-bar .brand-line-1{font-size:16px}
.burger{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--glass-line);
  background:rgba(255,255,255,.04);display:flex;align-items:center;justify-content:center;
  color:var(--text-1);cursor:pointer;
}
.burger:hover{border-color:var(--primary);color:var(--primary)}

.drawer-mask{
  display:none;position:fixed;inset:0;background:rgba(4,8,14,.7);z-index:58;
}

/* ---------- Sections ---------- */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:48px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.2em;color:var(--primary);
  text-transform:uppercase;margin-bottom:14px;font-weight:700;
}
.section-head h2{font-size:30px;font-weight:700;margin-bottom:16px;letter-spacing:-.01em}
.section-head p{color:var(--text-2);margin:0}

.surface{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:88px 0 72px;
  background-image:linear-gradient(100deg,rgba(7,11,20,.96) 0%,rgba(7,11,20,.86) 46%,rgba(7,11,20,.72) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(22,224,176,.5),transparent);
}
.hero h1{
  font-size:44px;line-height:1.2;font-weight:800;letter-spacing:-.02em;
  margin:18px 0 20px;
}
.hero-sub{font-size:17px;color:var(--text-2);max-width:620px;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:40px}

.metric-row{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--glass-line);border-radius:var(--radius-card);
  background:var(--glass);backdrop-filter:blur(14px);overflow:hidden;
}
.metric{padding:18px 20px;border-right:1px solid var(--line)}
.metric:last-child{border-right:none}
.metric-num{font-size:26px;font-weight:800;color:var(--text-1);line-height:1.2}
.metric-label{font-size:12.5px;color:var(--text-3);margin-top:4px}

.hero-visual{position:relative;padding-left:24px}
.hero-visual img{width:100%;height:380px;object-fit:cover;border:1px solid var(--glass-line);box-shadow:var(--shadow-card)}
.hero-float{
  position:absolute;left:-8px;bottom:-24px;width:270px;
  background:rgba(18,26,43,.86);backdrop-filter:blur(14px);
  border:1px solid var(--glass-line);border-radius:var(--radius-card);
  padding:18px 20px;box-shadow:var(--shadow-card);
}
.hero-float-label{font-size:11.5px;letter-spacing:.14em;color:var(--text-3);margin:0 0 6px}
.hero-float-title{font-size:15px;font-weight:700;color:var(--text-1);margin:0 0 12px}
.hero-float-list li{
  display:flex;justify-content:space-between;gap:10px;
  font-size:12.5px;color:var(--text-2);
  padding:6px 0;border-top:1px solid var(--line);
}
.hero-float-list li span:last-child{color:var(--primary)}

/* ---------- Cards ---------- */
.card{
  background:var(--bg-2);
  border:1px solid var(--glass-line);
  border-radius:var(--radius-card);
  padding:28px 26px;
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px);
  height:100%;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);border-color:rgba(22,224,176,.32)}
.card-icon{
  width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(22,224,176,.10);color:var(--primary);
  font-size:18px;margin-bottom:18px;
}
.card h3{font-size:19px;font-weight:600;margin-bottom:10px}
.card p{font-size:14.5px;color:var(--text-2);margin-bottom:18px}
.card-tag{display:inline-block;font-size:12px;color:var(--text-3);margin-bottom:10px}

/* ---------- Numbered list ---------- */
.split{display:grid;grid-template-columns:0.9fr 1.1fr;gap:64px;align-items:start}
.num-list{display:flex;flex-direction:column;gap:8px}
.num-item{
  display:flex;gap:20px;align-items:flex-start;
  padding:22px 24px;border-radius:var(--radius-card);
  border:1px solid transparent;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.num-item:hover{background:rgba(255,255,255,.035);border-color:var(--glass-line)}
.num-index{
  font-size:18px;font-weight:800;color:var(--accent);
  line-height:1.4;flex:0 0 auto;min-width:36px;
}
.num-body h3{font-size:18px;font-weight:600;margin-bottom:6px}
.num-body p{margin:0;font-size:14.5px;color:var(--text-2)}

/* ---------- Scene (alternating) ---------- */
.scene{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:36px 0;
}
.scene.reverse .scene-media{order:2}
.scene-media img{width:100%;height:300px;object-fit:cover;border:1px solid var(--glass-line);box-shadow:var(--shadow-card)}
.scene-body h3{font-size:22px;font-weight:700;margin-bottom:14px}
.scene-body p{font-size:15px;color:var(--text-2)}
.scene-points{margin:0 0 20px;display:flex;flex-direction:column;gap:8px}
.scene-points li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2)}
.scene-points li i{color:var(--primary);font-size:13px;margin-top:5px}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{
  position:relative;padding:26px 22px;border-radius:var(--radius-card);
  background:var(--bg-2);border:1px solid var(--glass-line);
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:rgba(22,224,176,.32)}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;margin-bottom:16px;
  background:rgba(22,224,176,.12);color:var(--primary);
  font-size:14px;font-weight:800;
}
.step h3{font-size:17px;font-weight:600;margin-bottom:8px}
.step p{font-size:14px;color:var(--text-2);margin:0}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:860px;margin:0 auto}
.faq-item{
  background:var(--bg-2);border:1px solid var(--glass-line);
  border-radius:var(--radius-card);overflow:hidden;
  transition:border-color .2s var(--ease);
}
.faq-item[open]{border-color:rgba(22,224,176,.32)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--text-1);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary)}
.faq-icon{
  position:relative;width:24px;height:24px;flex:0 0 auto;
  border:1px solid var(--glass-line);border-radius:50%;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--primary);transform:translate(-50%,-50%);
  transition:transform .18s var(--ease);
}
.faq-icon::before{width:10px;height:2px}
.faq-icon::after{width:2px;height:10px}
.faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg) scaleY(0)}
.faq-answer{padding:0 24px 22px;font-size:15px;color:var(--text-2)}
.faq-answer p:last-child{margin-bottom:0}

/* ---------- CTA band ---------- */
.cta-band{
  background:linear-gradient(120deg,rgba(18,26,43,.95),rgba(11,19,34,.95)),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  border:1px solid var(--glass-line);border-radius:20px;
  padding:48px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--shadow-card);
}
.cta-band h2{font-size:26px;font-weight:700;margin-bottom:10px}
.cta-band p{margin:0;font-size:15px;color:var(--text-2);max-width:560px}
.cta-band-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto}

/* ---------- Footer ---------- */
.site-footer{
  background:#060A12;border-top:1px solid var(--line);
  padding:56px 0 0;margin-top:24px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;padding-bottom:40px}
.footer-brand-name{font-size:18px;font-weight:800;color:var(--text-1);margin-bottom:14px}
.footer-brand p{font-size:14px;color:var(--text-3);max-width:380px;margin:0}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text-1);margin-bottom:16px;letter-spacing:.04em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14px;color:var(--text-3)}
.footer-col a{color:var(--text-2);font-size:14px}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ---------- Responsive ---------- */
@media (max-width:1199.98px){
  .hero h1{font-size:38px}
  .split{gap:44px}
  .section{padding:80px 0}
}

@media (min-width:1024px) and (max-width:1199.98px){
  .brand-text,.nav-group-title,.sidebar-note,.cta-full{display:none}
  .cta-mini{display:inline}
  .brand-link{justify-content:center}
  .sidebar-brand{padding:0;justify-content:center}
  .sidebar-scroll{padding:20px 12px}
  .nav-item{justify-content:center;padding:0}
  .nav-item span{display:none}
  .sidebar-foot{padding:16px 12px 20px}
  .sidebar-cta{padding:0;font-size:12px}
}

@media (max-width:1023.98px){
  .app-sidebar{
    width:280px;transform:translateX(-100%);
    box-shadow:0 24px 60px rgba(0,0,0,.55);
  }
  body.drawer-open .app-sidebar{transform:translateX(0)}
  body.drawer-open .drawer-mask{display:block}
  .app-main{margin-left:0;padding-top:60px}
  .mobile-bar{display:flex}
  .container{padding:0 20px}
  .hero{padding:64px 0 56px}
  .hero h1{font-size:32px}
  .hero-visual{padding-left:0;margin-top:36px}
  .hero-float{position:static;width:100%;margin-top:18px}
  .hero-visual img{height:280px}
  .metric-row{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(2){border-right:none}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line)}
  .split{grid-template-columns:1fr;gap:32px}
  .scene{grid-template-columns:1fr;gap:28px;padding:24px 0}
  .scene.reverse .scene-media{order:0}
  .steps{grid-template-columns:repeat(2,1fr)}
  .section{padding:64px 0}
  .section-head h2{font-size:26px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 26px}
  .cta-band-actions{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}

@media (max-width:520px){
  .hero h1{font-size:27px;line-height:1.28}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{width:100%}
  .metric-row{grid-template-columns:1fr}
  .metric{border-right:none;border-bottom:1px solid var(--line)}
  .metric:last-child{border-bottom:none}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:56px 0}
  .card{padding:22px 20px}
  .faq-item summary{padding:16px 18px;font-size:15px}
  .faq-answer{padding:0 18px 18px}
  .cta-band-actions .btn{width:100%}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .card:hover,.step:hover,.btn:hover{transform:none}
}

/* roulang page: category2 */
:root{
  --bg-0:#070B14;
  --bg-1:#0C1322;
  --bg-2:#121A2B;
  --glass:rgba(255,255,255,.045);
  --glass-border:rgba(255,255,255,.10);
  --primary:#16E0B0;
  --primary-deep:#0B8F73;
  --primary-soft:rgba(22,224,176,.10);
  --primary-soft-2:rgba(22,224,176,.08);
  --accent:#FFB020;
  --text-1:#F2F6FA;
  --text-2:#A9B6C6;
  --text-3:#6B7A8D;
  --line:rgba(255,255,255,.08);
  --danger:#FF6B6B;
  --ok:#34D399;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-pill:999px;
  --shadow-card:0 12px 32px rgba(0,0,0,.35);
  --shadow-card-hover:0 18px 44px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(22,224,176,.35),0 8px 28px rgba(22,224,176,.22);
  --sidebar-w:248px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px; --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:96px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{color:var(--text-1);margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.35;}
p{margin:0 0 1.15em;color:var(--text-2);}
p:last-child{margin-bottom:0;}
a{color:var(--primary);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:#5cf0cd;}
a:focus-visible,button:focus-visible,input:focus-visible,label:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
img{max-width:100%;height:auto;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:none;}
figcaption{font-size:13px;color:var(--text-3);}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.text-narrow{max-width:760px;}
.mono{font-variant-numeric:tabular-nums;}

/* ============ 应用骨架 ============ */
.app-shell{display:flex;min-height:100vh;}

.topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:60px;z-index:60;
  background:rgba(9,14,25,.92);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.topbar-inner{height:100%;display:flex;align-items:center;justify-content:space-between;padding:0 16px;}
.topbar-brand{display:flex;flex-direction:column;line-height:1.15;}
.topbar-brand .b-main{font-size:15px;font-weight:800;color:var(--text-1);letter-spacing:-.01em;}
.topbar-brand .b-sub{font-size:10px;color:var(--text-3);letter-spacing:.14em;}
.hamburger{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--glass-border);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  background:var(--glass);transition:border-color .18s var(--ease),background .18s var(--ease);
}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);}
.hamburger:hover{border-color:var(--primary);background:var(--primary-soft-2);}

.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);z-index:70;
  display:flex;flex-direction:column;
  background:linear-gradient(180deg,#0A101E 0%,#080D18 100%);
  border-right:1px solid var(--line);
  padding:0;
  transition:transform .24s var(--ease),width .24s var(--ease);
}
.brand{
  height:72px;display:flex;align-items:center;gap:12px;padding:0 20px;
  border-bottom:1px solid var(--line);flex:0 0 auto;
}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  background:linear-gradient(140deg,var(--primary),var(--primary-deep));
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 18px rgba(22,224,176,.28);
}
.brand-mark svg{width:20px;height:20px;stroke:#04140F;fill:none;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;overflow:hidden;}
.brand-main{font-size:18px;font-weight:800;color:var(--text-1);letter-spacing:-.01em;white-space:nowrap;}
.brand-sub{font-size:11px;color:var(--text-3);letter-spacing:.16em;white-space:nowrap;}
.sidebar-scroll{flex:1 1 auto;overflow-y:auto;padding:20px 14px;}
.sidebar-scroll::-webkit-scrollbar{width:6px;}
.sidebar-scroll::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:3px;}

.nav-group{margin-bottom:28px;}
.nav-group-title{
  font-size:11px;letter-spacing:.18em;color:var(--text-3);text-transform:uppercase;
  margin:0 0 10px;padding:0 10px;font-weight:600;
}
.nav-list{display:flex;flex-direction:column;gap:6px;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:12px;
  color:var(--text-2);font-size:15px;font-weight:500;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.nav-item svg{width:20px;height:20px;flex:0 0 20px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--text-1);}
.nav-item.active{background:var(--primary-soft);color:var(--primary);font-weight:600;}
.nav-item.active::before{
  content:"";position:absolute;left:-14px;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;background:var(--primary);
}
.nav-item span{white-space:nowrap;}

.sidebar-foot{flex:0 0 auto;padding:16px 18px 22px;border-top:1px solid var(--line);}
.side-cta{
  display:block;text-align:center;font-size:14px;font-weight:600;
  padding:11px 14px;border-radius:var(--radius-btn);
  border:1px solid rgba(22,224,176,.4);color:var(--primary);
  background:var(--primary-soft-2);
  transition:background .18s var(--ease),border-color .18s var(--ease);
}
.side-cta:hover{background:rgba(22,224,176,.16);border-color:var(--primary);color:#7ff3d8;}
.side-note{margin:12px 0 0;font-size:12px;color:var(--text-3);line-height:1.6;}

.drawer-mask{
  display:none;position:fixed;inset:0;z-index:65;
  background:rgba(4,8,14,.7);opacity:0;transition:opacity .22s var(--ease);
}
.drawer-mask.show{opacity:1;}

.main-area{flex:1 1 auto;margin-left:var(--sidebar-w);min-width:0;display:flex;flex-direction:column;}
.main-area > .page-body{flex:1 1 auto;}

/* ============ 通用元素 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:var(--primary-soft);color:var(--primary);
  border:1px solid rgba(22,224,176,.28);
}
.badge.accent{background:rgba(255,176,32,.12);color:var(--accent);border-color:rgba(255,176,32,.32);}
.badge.muted{background:rgba(255,255,255,.05);color:var(--text-2);border-color:var(--glass-border);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,#16E0B0 0%,#0B8F73 100%);
  color:#04140F;
  box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(22,224,176,.5),0 14px 34px rgba(22,224,176,.3);color:#04140F;}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;color:var(--text-1);
  border:1px solid var(--glass-border);
}
.btn-ghost:hover{border-color:var(--primary);background:var(--primary-soft-2);color:var(--text-1);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:14px;}
.link-arrow svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s var(--ease);}
.link-arrow:hover svg{transform:translateX(3px);}

.section{padding:96px 0;position:relative;}
.section.alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{margin-bottom:40px;max-width:760px;}
.section-eyebrow{
  font-size:12px;letter-spacing:.2em;color:var(--primary);font-weight:700;
  margin:0 0 12px;text-transform:uppercase;
}
.section-title{font-size:30px;font-weight:700;margin:0 0 14px;line-height:1.3;}
.section-desc{font-size:16px;color:var(--text-2);max-width:760px;margin:0;}

/* ============ Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:72px 0 64px;
  background-image:linear-gradient(180deg,rgba(7,11,20,.70) 0%,rgba(7,11,20,.94) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 88%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 88%);
}
.page-hero .container{position:relative;z-index:2;}
.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px;}
.crumbs a{color:var(--text-3);}
.crumbs a:hover{color:var(--primary);}
.crumbs .sep{color:rgba(255,255,255,.22);}
.hero-title{font-size:44px;line-height:1.2;font-weight:800;letter-spacing:-.02em;margin:16px 0 18px;}
.hero-title .thin{display:block;font-size:22px;font-weight:600;color:var(--text-2);letter-spacing:0;margin-top:12px;line-height:1.5;}
.hero-sub{font-size:17px;color:var(--text-2);max-width:620px;margin:0 0 28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:12px;}
.hero-side{
  position:relative;
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-card);
  padding:24px;
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
}
.hero-side h3{font-size:16px;margin:0 0 16px;display:flex;align-items:center;justify-content:space-between;}
.hero-side h3 span{font-size:12px;color:var(--text-3);font-weight:500;}
.scale-list{display:flex;flex-direction:column;gap:14px;}
.scale-row{display:flex;flex-direction:column;gap:6px;}
.scale-top{display:flex;justify-content:space-between;font-size:13px;color:var(--text-2);}
.scale-top b{color:var(--text-1);font-weight:600;}
.scale-bar{height:6px;border-radius:3px;background:rgba(255,255,255,.07);overflow:hidden;}
.scale-bar i{display:block;height:100%;border-radius:3px;background:linear-gradient(90deg,var(--primary),var(--primary-deep));}
.hero-side .side-note-line{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:12px;color:var(--text-3);margin-bottom:0;}

/* ============ 指标条 ============ */
.stat-bar{
  background:linear-gradient(180deg,rgba(18,26,43,.9),rgba(12,19,34,.9));
  border-bottom:1px solid var(--line);
}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat-item{padding:28px 24px;border-left:1px solid var(--line);}
.stat-item:first-child{border-left:none;padding-left:0;}
.stat-num{font-size:32px;font-weight:800;color:var(--text-1);line-height:1.1;letter-spacing:-.02em;display:flex;align-items:baseline;gap:4px;}
.stat-num small{font-size:14px;font-weight:600;color:var(--primary);}
.stat-label{font-size:13px;color:var(--text-3);margin:8px 0 0;}

/* ============ 筛选 + 长卡列表 ============ */
.data-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:32px;align-items:start;}
.filter-panel{
  position:sticky;top:24px;
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-card);
  padding:22px 20px;
  backdrop-filter:blur(14px);
}
.filter-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.filter-head h2{font-size:15px;margin:0;}
.filter-head span{font-size:12px;color:var(--text-3);}
.filter-group{padding:16px 0;border-top:1px solid var(--line);}
.filter-group:first-of-type{border-top:none;padding-top:0;}
.filter-group h3{font-size:13px;color:var(--text-1);letter-spacing:.04em;margin:0 0 12px;font-weight:600;}
.check{
  display:flex;align-items:center;gap:10px;
  padding:6px 0;font-size:14px;color:var(--text-2);cursor:pointer;
  transition:color .18s var(--ease);
}
.check:hover{color:var(--text-1);}
.check input{appearance:none;-webkit-appearance:none;width:17px;height:17px;flex:0 0 17px;
  border:1px solid rgba(255,255,255,.22);border-radius:5px;background:rgba(255,255,255,.03);
  transition:border-color .18s var(--ease),background .18s var(--ease);position:relative;}
.check input:checked{background:var(--primary-soft);border-color:var(--primary);}
.check input:checked::after{
  content:"";position:absolute;left:5px;top:2px;width:5px;height:9px;
  border-right:2px solid var(--primary);border-bottom:2px solid var(--primary);transform:rotate(42deg);
}
.filter-reset{
  display:block;width:100%;margin-top:16px;text-align:center;
  min-height:42px;line-height:40px;border-radius:var(--radius-btn);
  border:1px solid var(--glass-border);background:transparent;color:var(--text-2);
  font-size:14px;font-weight:600;transition:border-color .18s var(--ease),color .18s var(--ease);
}
.filter-reset:hover{border-color:var(--primary);color:var(--primary);}

.list-top{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-bottom:20px;}
.list-count{font-size:14px;color:var(--text-3);}
.list-count b{color:var(--text-1);}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;}
.chip{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:var(--radius-pill);
  font-size:13px;color:var(--text-2);background:rgba(255,255,255,.04);
  border:1px solid var(--glass-border);
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.chip:hover{color:var(--text-1);border-color:rgba(22,224,176,.4);transform:translateY(-1px);}
.chip.on{background:var(--primary-soft);border-color:rgba(22,224,176,.45);color:var(--primary);font-weight:600;}

.data-list{display:flex;flex-direction:column;gap:20px;}
.data-card{
  display:grid;grid-template-columns:230px minmax(0,1fr);gap:24px;
  background:var(--bg-2);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-card);
  padding:20px;
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.data-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);border-color:rgba(22,224,176,.32);}
.data-thumb{
  border-radius:12px;overflow:hidden;border:1px solid var(--line);
  background:var(--bg-1);position:relative;min-height:150px;
}
.data-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.data-card:hover .data-thumb img{transform:scale(1.04);}
.data-thumb .thumb-tag{position:absolute;left:10px;top:10px;}
.data-title{font-size:20px;font-weight:600;margin:12px 0 10px;line-height:1.45;}
.data-title a{color:var(--text-1);}
.data-title a:hover{color:var(--primary);}
.data-text{font-size:15px;color:var(--text-2);margin:0 0 16px;}
.metric-strip{
  display:grid;grid-template-columns:repeat(3,1fr);gap:12px;
  padding:14px 16px;border-radius:12px;
  background:rgba(255,255,255,.03);border:1px solid var(--line);
}
.metric{display:flex;flex-direction:column;gap:2px;}
.metric-num{font-size:17px;font-weight:700;color:var(--text-1);}
.metric-num em{font-style:normal;font-size:12px;color:var(--primary);margin-left:3px;font-weight:600;}
.metric-label{font-size:12px;color:var(--text-3);}
.card-foot{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;margin-top:16px;}
.meta-line{font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:10px;}
.meta-line i{display:block;width:1px;height:12px;background:var(--line);}
.pager{display:flex;justify-content:center;align-items:center;gap:8px;margin-top:44px;}
.pager button{
  min-width:42px;height:42px;padding:0 14px;border-radius:12px;
  border:1px solid var(--glass-border);background:rgba(255,255,255,.03);color:var(--text-2);
  font-size:14px;transition:border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.pager button:hover{border-color:var(--primary);color:var(--primary);}
.pager button.cur{background:var(--primary-soft);border-color:rgba(22,224,176,.45);color:var(--primary);font-weight:700;}

/* ============ 序号列表 ============ */
.numbered{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.num-item{
  background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--radius-card);
  padding:26px 24px;backdrop-filter:blur(14px);
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.num-item:hover{transform:translateY(-4px);border-color:rgba(22,224,176,.3);}
.num-index{font-size:13px;font-weight:800;color:var(--accent);letter-spacing:.1em;display:block;margin-bottom:14px;}
.num-item h3{font-size:18px;margin:0 0 10px;}
.num-item p{font-size:15px;margin:0 0 14px;}
.num-tags{display:flex;flex-wrap:wrap;gap:8px;}

/* ============ 步骤流程 ============ */
.flow-wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center;}
.flow-figure{border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--glass-border);box-shadow:var(--shadow-card);}
.flow-figure img{width:100%;display:block;}
.steps{display:flex;flex-direction:column;gap:0;margin-top:8px;}
.step{display:grid;grid-template-columns:52px minmax(0,1fr);gap:18px;padding:20px 0;border-top:1px solid var(--line);}
.step:first-child{border-top:none;}
.step-num{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);border:1px solid rgba(22,224,176,.3);
  color:var(--primary);font-weight:800;font-size:15px;
}
.step h3{font-size:17px;margin:2px 0 8px;}
.step p{font-size:15px;margin:0;}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px;}
.faq-item{
  background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--radius-card);
  backdrop-filter:blur(14px);overflow:hidden;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.faq-item.open{border-color:rgba(22,224,176,.35);background:rgba(22,224,176,.05);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;text-align:left;font-size:16px;font-weight:600;color:var(--text-1);
  transition:color .18s var(--ease);
}
.faq-q:hover{color:var(--primary);}
.faq-icon{
  width:26px;height:26px;flex:0 0 26px;border-radius:50%;
  border:1px solid var(--glass-border);position:relative;
  transition:transform .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--text-1);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:11px;height:1.6px;}
.faq-icon::after{width:1.6px;height:11px;transition:opacity .18s var(--ease);}
.faq-item.open .faq-icon{background:var(--primary-soft);border-color:rgba(22,224,176,.4);transform:rotate(180deg);}
.faq-item.open .faq-icon::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease);}
.faq-item.open .faq-a{max-height:420px;}
.faq-a p{padding:0 24px 22px;font-size:15px;color:var(--text-2);margin:0;}

/* ============ CTA 通栏 ============ */
.cta-band{
  background:linear-gradient(120deg,rgba(22,224,176,.12) 0%,rgba(12,19,34,.6) 48%,rgba(255,176,32,.08) 100%),var(--bg-1);
  border:1px solid var(--glass-border);
  border-radius:20px;
  padding:40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:100% 32px;opacity:.5;
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{font-size:26px;margin:0 0 10px;}
.cta-band p{margin:0;font-size:15px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  background:#060A12;border-top:1px solid var(--line);
  padding:64px 0 28px;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;}
.footer-brand-name{font-size:18px;font-weight:800;color:var(--text-1);margin-bottom:14px;letter-spacing:-.01em;}
.footer-brand p{font-size:14px;color:var(--text-3);max-width:420px;margin:0;}
.footer-col h4{font-size:14px;color:var(--text-1);margin:0 0 16px;letter-spacing:.05em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:14px;color:var(--text-3);}
.footer-col a{color:var(--text-3);}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:13px;color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  :root{--sidebar-w:264px;}
}
@media (max-width:1199px){
  .flow-wrap{grid-template-columns:1fr;gap:32px;}
  .flow-figure{order:-1;}
}
@media (max-width:1023px){
  .topbar{display:block;}
  .sidebar{
    transform:translateX(-100%);
    width:280px;
    box-shadow:0 0 60px rgba(0,0,0,.6);
  }
  .sidebar.open{transform:translateX(0);}
  .drawer-mask{display:block;}
  .main-area{margin-left:0;padding-top:60px;}
  .page-hero{padding:48px 0 44px;}
  .hero-title{font-size:30px;}
  .hero-title .thin{font-size:18px;}
  .section{padding:72px 0;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .stat-item{border-left:none;border-top:1px solid var(--line);padding:22px 0;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-top:none;}
  .stat-item:nth-child(even){padding-left:24px;border-left:1px solid var(--line);}
  .data-layout{grid-template-columns:1fr;gap:24px;}
  .filter-panel{position:static;}
  .numbered{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (min-width:1024px) and (max-width:1199px){
  .brand-text{display:none;}
  .brand{justify-content:center;padding:0;}
  .nav-group-title{display:none;}
  .nav-item{justify-content:center;padding:0;}
  .nav-item span{
    position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%);
    background:var(--bg-2);border:1px solid var(--glass-border);border-radius:10px;
    padding:6px 12px;font-size:13px;color:var(--text-1);
    opacity:0;pointer-events:none;white-space:nowrap;z-index:80;
    transition:opacity .16s var(--ease);
  }
  .nav-item:hover span{opacity:1;}
  .nav-item.active::before{left:-14px;}
  .sidebar-foot .side-cta{font-size:0;padding:11px 0;}
  .sidebar-foot .side-cta::after{content:"反馈";font-size:14px;}
  .side-note{display:none;}
}
@media (max-width:767px){
  .section{padding:56px 0;}
  .container{padding:0 16px;}
  .section-title{font-size:24px;}
  .hero-title{font-size:27px;}
  .hero-actions .btn{width:100%;}
  .data-card{grid-template-columns:1fr;gap:16px;padding:16px;}
  .data-thumb{min-height:170px;}
  .metric-strip{grid-template-columns:1fr;gap:10px;text-align:left;}
  .metric{flex-direction:row;align-items:baseline;gap:8px;}
  .stat-num{font-size:26px;}
  .stat-grid{grid-template-columns:1fr;}
  .stat-item:nth-child(even){padding-left:0;border-left:none;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band{padding:28px 20px;}
  .cta-band h2{font-size:21px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .faq-q{padding:16px 18px;font-size:15px;}
  .faq-a p{padding:0 18px 18px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
:root{
  --bg-0:#070B14;
  --bg-1:#0C1322;
  --bg-2:#121A2B;
  --glass:rgba(255,255,255,.045);
  --border:rgba(255,255,255,.10);
  --line:rgba(255,255,255,.08);
  --primary:#16E0B0;
  --primary-soft:rgba(22,224,176,.10);
  --primary-deep:#0B8F73;
  --accent:#FFB020;
  --text-1:#F2F6FA;
  --text-2:#A9B6C6;
  --text-3:#6B7A8D;
  --danger:#FF6B6B;
  --success:#34D399;
  --radius-card:16px;
  --radius-btn:12px;
  --shadow-card:0 12px 32px rgba(0,0,0,.35);
  --shadow-hover:0 18px 44px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(22,224,176,.35),0 8px 28px rgba(22,224,176,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sidebar-w:264px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
h1,h2,h3,h4{color:var(--text-1);margin:0 0 .55em;font-weight:700;letter-spacing:-.01em}
h1{font-size:44px;line-height:1.2;font-weight:800;letter-spacing:-.02em}
h2{font-size:30px;line-height:1.3}
h3{font-size:20px;line-height:1.4;font-weight:600}
h4{font-size:16px;line-height:1.5;font-weight:600}
p{margin:0 0 1.15em}
a{color:var(--primary);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:#5BF0CE}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:.14em;color:var(--primary);text-transform:uppercase;margin-bottom:14px;font-weight:600}
.lead{max-width:760px;color:var(--text-2);font-size:16px}
.muted{color:var(--text-3);font-size:14px}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* 布局骨架 */
.grid-x.my-row{margin-left:-12px;margin-right:-12px}
.grid-x.my-row>.cell{padding-left:12px;padding-right:12px}
.app{min-height:100vh}
.main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}

/* 侧栏 */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--bg-1);border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:60;
}
.brand{display:flex;align-items:center;gap:12px;height:72px;padding:0 20px;border-bottom:1px solid var(--line);color:var(--text-1)}
.brand:hover{color:var(--text-1)}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#04140F;font-weight:800;font-size:15px;letter-spacing:-.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;min-width:0}
.brand-line-1{font-size:18px;font-weight:700;color:var(--text-1);white-space:nowrap}
.brand-line-2{font-size:11px;color:var(--text-3);white-space:nowrap;letter-spacing:.06em}
.sidebar-body{flex:1;overflow-y:auto;padding:20px 14px}
.nav-group+.nav-group{margin-top:26px}
.nav-group-title{font-size:12px;color:var(--text-3);letter-spacing:.16em;margin:0 0 10px 12px;text-transform:uppercase}
.nav-list li+li{margin-top:6px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;height:44px;padding:0 14px;border-radius:12px;
  color:var(--text-2);font-size:15px;transition:background-color .18s var(--ease),color .18s var(--ease);
}
.nav-item svg{width:20px;height:20px;flex:0 0 20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.nav-item span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--text-1)}
.nav-item.active{background:var(--primary-soft);color:var(--primary)}
.nav-item.active::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:3px;background:var(--primary)}
.side-foot{padding:18px 18px 22px;border-top:1px solid var(--line)}
.side-foot .btn{width:100%}
.side-note{margin:12px 0 0;font-size:12px;color:var(--text-3);line-height:1.6}

/* 顶部栏（移动端） */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:70;
  align-items:center;justify-content:space-between;padding:0 16px;
  background:rgba(12,19,34,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);
}
.topbar-brand{display:flex;align-items:center;gap:10px;color:var(--text-1);font-weight:700;font-size:16px}
.topbar-brand:hover{color:var(--text-1)}
.menu-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--border);background:rgba(255,255,255,.04);
  display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-1);
}
.menu-toggle svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}
.overlay{
  position:fixed;inset:0;background:rgba(4,8,14,.7);z-index:55;opacity:0;visibility:hidden;
  transition:opacity .2s var(--ease),visibility .2s var(--ease);
}
.overlay.is-visible{opacity:1;visibility:visible}
body.no-scroll{overflow:hidden}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;line-height:1;border:1px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#04140F;box-shadow:var(--glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(22,224,176,.5),0 12px 34px rgba(22,224,176,.30);color:#04140F}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--border);color:var(--text-1)}
.btn-ghost:hover{border-color:var(--primary);background:rgba(22,224,176,.08);color:var(--text-1)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{min-height:44px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:15px}
.text-link svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s var(--ease)}
.text-link:hover svg{transform:translateX(3px)}

/* 徽章 */
.tag{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:600;line-height:1;background:var(--primary-soft);color:var(--primary);border:1px solid rgba(22,224,176,.28);
}
.tag-accent{background:rgba(255,176,32,.12);color:var(--accent);border-color:rgba(255,176,32,.32)}
.tag-muted{background:rgba(255,255,255,.05);color:var(--text-2);border-color:var(--border)}

/* 玻璃卡 */
.surface{
  background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius-card);
  backdrop-filter:blur(14px);box-shadow:var(--shadow-card);
}
.card-pad{padding:26px}
.card-hover{transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.card-hover:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(22,224,176,.28)}
.icon-block{
  width:36px;height:36px;border-radius:11px;background:var(--primary-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.icon-block svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* 面包屑 */
.crumbs{font-size:13px;color:var(--text-3);margin-bottom:22px}
.crumbs a{color:var(--text-3)}
.crumbs a:hover{color:var(--primary)}
.crumbs span.sep{margin:0 8px;opacity:.6}

/* Hero */
.hero{
  position:relative;overflow:hidden;padding:104px 0 88px;
  background-image:linear-gradient(180deg,rgba(7,11,20,.86),rgba(7,11,20,.94) 62%,var(--bg-0)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:120px;pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(255,255,255,.06) 0 1px,transparent 1px 72px);
  opacity:.5;
}
.hero h1{max-width:640px}
.hero-sub{max-width:560px;font-size:17px;color:var(--text-2);margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:40px}
.hero-panel{padding:26px}
.hero-panel h3{font-size:17px;margin-bottom:14px}
.check-list li{position:relative;padding-left:26px;font-size:15px;color:var(--text-2);margin-bottom:12px}
.check-list li:last-child{margin-bottom:0}
.check-list li::before{
  content:"";position:absolute;left:6px;top:11px;width:8px;height:8px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 0 4px rgba(22,224,176,.14);
}

/* 指标条 */
.stat-strip{margin-top:8px}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-radius:var(--radius-card);overflow:hidden}
.stat-cell{padding:24px 26px;background:rgba(255,255,255,.035);border-left:1px solid var(--line)}
.stat-cell:first-child{border-left:0}
.stat-num{font-size:26px;font-weight:800;color:var(--text-1);line-height:1.2;letter-spacing:-.01em}
.stat-label{font-size:13px;color:var(--text-3);margin-top:6px}

/* 搜索条 */
.search-band{padding:0 0 24px}
.search-glass{
  display:flex;gap:12px;align-items:center;padding:18px;border-radius:var(--radius-card);
  background:rgba(255,255,255,.045);border:1px solid var(--border);backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
}
.search-glass input{
  flex:1;min-height:48px;padding:0 16px;border-radius:var(--radius-btn);
  background:rgba(255,255,255,.03);border:1px solid var(--border);color:var(--text-1);font-size:15px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.search-glass input::placeholder{color:var(--text-3)}
.search-glass input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(22,224,176,.18)}
.quick-tags{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:18px}
.quick-tags .label{font-size:13px;color:var(--text-3);margin-right:2px}

/* 序号列表 */
.num-list{counter-reset:num}
.num-item{display:flex;gap:20px;padding:24px 0;border-top:1px solid var(--line)}
.num-item:first-child{border-top:0;padding-top:0}
.num-index{
  flex:0 0 46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:800;color:var(--primary);background:var(--primary-soft);border:1px solid rgba(22,224,176,.24);
}
.num-body h3{font-size:18px;margin-bottom:6px}
.num-body p{margin:0;font-size:15px;color:var(--text-2)}

/* 分节标题 */
.section-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:40px}
.section-head h2{margin-bottom:8px}
.section-head p{margin:0;max-width:620px;color:var(--text-2)}

/* FAQ */
.faq-group+.faq-group{margin-top:44px}
.faq-group-head{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.faq-group-head h2{font-size:22px;margin:0}
.acc-item{
  background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius-card);
  margin-bottom:12px;overflow:hidden;backdrop-filter:blur(14px);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.acc-item:hover{border-color:rgba(255,255,255,.18)}
.acc-item.is-open{border-color:rgba(22,224,176,.34);box-shadow:0 12px 32px rgba(0,0,0,.32)}
.acc-head{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;background:none;border:0;cursor:pointer;text-align:left;
  color:var(--text-1);font-size:16px;font-weight:600;line-height:1.5;
}
.acc-icon{
  position:relative;flex:0 0 24px;width:24px;height:24px;border-radius:8px;background:var(--primary-soft);
}
.acc-icon::before,.acc-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;transform:translate(-50%,-50%);
  transition:transform .18s var(--ease),opacity .18s var(--ease);
}
.acc-icon::before{width:12px;height:2px}
.acc-icon::after{width:2px;height:12px}
.acc-item.is-open .acc-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.acc-body{display:none;padding:0 24px 22px;font-size:15px;color:var(--text-2)}
.acc-body p:last-child{margin-bottom:0}
.acc-item.is-open .acc-body{display:block}

/* 流程 */
.flow-media{
  border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow-card);
  background:var(--bg-2);
}
.flow-media img{width:100%;height:100%;min-height:280px;object-fit:cover}
.step-list{counter-reset:step}
.step{display:flex;gap:18px;padding:20px 0;border-bottom:1px solid var(--line)}
.step:last-child{border-bottom:0}
.step-index{
  flex:0 0 40px;height:40px;border-radius:10px;background:rgba(255,176,32,.12);color:var(--accent);
  border:1px solid rgba(255,176,32,.30);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;
}
.step h3{font-size:17px;margin-bottom:4px}
.step p{margin:0;font-size:15px}

/* 表单 */
.form-card{padding:30px}
.field{margin-bottom:20px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:8px}
.field .req{color:var(--accent);margin-left:4px}
.field input,.field textarea{
  width:100%;min-height:48px;padding:12px 14px;border-radius:var(--radius-btn);
  background:rgba(255,255,255,.03);border:1px solid var(--border);color:var(--text-1);
  font-size:15px;font-family:inherit;line-height:1.6;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field textarea{min-height:130px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(22,224,176,.18)}
.field .hint{font-size:13px;color:var(--text-3);margin-top:8px}
.form-note{
  margin-top:16px;padding:12px 14px;border-radius:var(--radius-btn);font-size:14px;
  background:rgba(52,211,153,.10);border:1px solid rgba(52,211,153,.30);color:var(--success);
}
.form-note[hidden]{display:none}
.info-row{display:flex;justify-content:space-between;gap:16px;padding:14px 0;border-bottom:1px solid var(--line);font-size:15px}
.info-row:last-of-type{border-bottom:0}
.info-row strong{color:var(--text-1);font-weight:600}

/* CTA 通栏 */
.cta-band{
  padding:40px;border-radius:var(--radius-card);
  background:linear-gradient(135deg,rgba(22,224,176,.12),rgba(12,19,34,.6));
  border:1px solid rgba(22,224,176,.26);backdrop-filter:blur(14px);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cta-band h2{font-size:24px;margin-bottom:8px}
.cta-band p{margin:0;max-width:640px;color:var(--text-2)}

/* 页脚 */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:64px 0 0;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-brand-name{font-size:18px;font-weight:700;color:var(--text-1);margin-bottom:14px}
.footer-brand p{font-size:15px;color:var(--text-2);max-width:420px;margin:0}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text-1)}
.footer-col li{font-size:15px;color:var(--text-2);margin-bottom:12px}
.footer-col li:last-child{margin-bottom:0}
.footer-col a{color:var(--text-2)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  border-top:1px solid var(--line);padding:22px 0 28px;font-size:13px;color:var(--text-3);
}

/* 响应式 */
@media (min-width:1200px) and (max-width:1439.98px){
  :root{--sidebar-w:248px}
}
@media (min-width:1024px) and (max-width:1199.98px){
  :root{--sidebar-w:88px}
  .sidebar .brand{justify-content:center;padding:0}
  .brand-text,.nav-group-title,.nav-item span,.side-note,.side-foot .btn{display:none}
  .sidebar-body{padding:20px 12px}
  .nav-item{justify-content:center;padding:0}
  .side-foot{padding:14px 12px}
}
@media (max-width:1023.98px){
  .sidebar{
    width:280px;transform:translateX(-100%);transition:transform .22s var(--ease);
    box-shadow:0 24px 60px rgba(0,0,0,.5);
  }
  .sidebar.is-open{transform:none}
  .main{margin-left:0;padding-top:60px}
  .topbar{display:flex}
  .hero{padding:64px 0 56px}
  .hero h1{font-size:32px}
  .section{padding:72px 0}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .stat-cell{border-left:0;border-top:1px solid var(--line)}
  .stat-cell:nth-child(1),.stat-cell:nth-child(2){border-top:0}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:767.98px){
  .container{padding:0 20px}
  h1{font-size:30px;line-height:1.25}
  h2{font-size:24px}
  .section{padding:56px 0}
  .hero{padding:48px 0 48px}
  .hero-sub{font-size:16px}
  .search-glass{flex-direction:column;align-items:stretch}
  .search-glass .btn{width:100%}
  .stat-grid{grid-template-columns:1fr}
  .stat-cell{border-top:1px solid var(--line);border-left:0}
  .stat-cell:first-child{border-top:0}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .cta-band{padding:28px}
  .card-pad,.form-card{padding:22px}
  .acc-head{padding:16px 18px;font-size:15px}
  .acc-body{padding:0 18px 18px}
  .flow-media img{min-height:200px}
  .hero-actions .btn{width:100%}
}
@media (max-width:519.98px){
  .container{padding:0 16px}
  .num-item{gap:14px}
  .num-index{flex:0 0 40px;height:40px;font-size:15px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}