/* roulang page: index */
:root{
  --brand:#1B5FD9;
  --brand-dark:#14489F;
  --brand-soft:#E8F0FE;
  --neon:#3DE1FF;
  --orange:#FF6B2C;
  --orange-dark:#E85A1C;
  --ink:#0E1726;
  --body:#4A5A72;
  --muted:#8A98AC;
  --bg:#F5F8FC;
  --bg-alt:#EEF3FA;
  --line:#E3EAF3;
  --dark:#0B1220;
  --dark-2:#111C30;
  --white:#FFFFFF;
  --success:#16A34A;
  --warn:#E5484D;
  --info:#2563EB;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --shadow:0 1px 2px rgba(16,32,64,.05),0 8px 24px rgba(16,32,64,.06);
  --shadow-hover:0 14px 34px rgba(16,32,64,.13);
  --ease:220ms ease;
  --maxw:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--body);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),opacity var(--ease),transform var(--ease)}
a:hover{color:var(--brand-dark)}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.2px;
  border:1px solid transparent;transition:all var(--ease);white-space:nowrap;
}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 8px 20px rgba(255,107,44,.28)}
.btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(255,107,44,.34)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;color:var(--ink);border-color:#D8E2EF}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn-neon{background:var(--neon);color:#062430;font-weight:700;border-radius:8px;padding:11px 20px}
.btn-neon:hover{background:#68EBFF;color:#062430;transform:translateY(-1px);box-shadow:0 10px 24px rgba(61,225,255,.32)}
.btn-ghost-dark{background:transparent;color:#fff;border-color:rgba(61,225,255,.45)}
.btn-ghost-dark:hover{background:rgba(61,225,255,.12);color:#fff;border-color:var(--neon)}
.btn-block{width:100%}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--dark);
  border-bottom:1px solid rgba(61,225,255,.18);
  box-shadow:0 6px 24px rgba(6,16,32,.35);
}
.nav-inner{
  height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(145deg,#1B5FD9,#0E3F9C);
  color:#fff;font-weight:800;font-size:18px;
  box-shadow:0 0 0 1px rgba(61,225,255,.5),0 0 16px rgba(61,225,255,.25);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{color:#fff;font-size:15px;font-weight:700;letter-spacing:.3px}
.brand-text em{font-style:normal;font-size:11px;color:rgba(61,225,255,.78);letter-spacing:.6px}

.nav-menu{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;display:block;padding:10px 14px;border-radius:8px;
  color:rgba(255,255,255,.78);font-size:15px;font-weight:500;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--neon);border-radius:2px;opacity:0;transform:scaleX(.4);
  transition:opacity var(--ease),transform var(--ease);
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{opacity:.85;transform:scaleX(1)}
.nav-link.active{color:#fff;text-shadow:0 0 12px rgba(61,225,255,.55)}
.nav-link.active::after{opacity:1;transform:scaleX(1)}
.nav-link.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:18px;border-radius:2px;background:var(--neon);
  box-shadow:0 0 10px rgba(61,225,255,.8);
}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid rgba(61,225,255,.28);align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--neon);position:relative;border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--neon);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.drawer{
  position:fixed;inset:0;z-index:90;background:rgba(11,18,32,.98);
  display:none;flex-direction:column;padding:20px;
}
.drawer.open{display:flex}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{
  width:44px;height:44px;border-radius:10px;border:1px solid rgba(61,225,255,.3);
  color:var(--neon);font-size:20px;line-height:1;
}
.drawer-link{
  height:48px;display:flex;align-items:center;padding:0 14px;
  color:rgba(255,255,255,.86);font-size:16px;border-radius:8px;
}
.drawer-link:hover{background:rgba(61,225,255,.08);color:#fff}
.drawer-link.active{background:rgba(61,225,255,.1);color:#fff;border-left:3px solid var(--neon)}
.drawer-cta{margin-top:20px}

/* ---------- Hero ---------- */
.hero{
  background:
    radial-gradient(900px 380px at 12% -10%,rgba(27,95,217,.28),transparent 60%),
    linear-gradient(180deg,#0B1220 0%,#111C30 100%);
  border-bottom:1px solid rgba(61,225,255,.14);
  overflow:hidden;
}
.hero-inner{
  display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
  padding:96px 0 88px;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(61,225,255,.1);border:1px solid rgba(61,225,255,.32);
  color:var(--neon);font-size:13px;font-weight:600;letter-spacing:.4px;
}
.hero-eyebrow::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--neon);
  box-shadow:0 0 10px rgba(61,225,255,.9);
}
.hero-title{
  margin:20px 0 0;
  font-size:clamp(30px,4vw,46px);line-height:1.22;font-weight:700;color:#fff;
  letter-spacing:.5px;
}
.hero-title .hl{color:var(--neon)}
.hero-sub{
  margin-top:16px;max-width:560px;
  font-size:17px;line-height:1.75;color:rgba(255,255,255,.72);
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-points{margin-top:32px;display:flex;flex-direction:column;gap:12px}
.hero-point{display:flex;align-items:flex-start;gap:10px;color:rgba(255,255,255,.8);font-size:15px}
.hero-point i{
  width:8px;height:8px;border-radius:2px;flex-shrink:0;margin-top:8px;
  background:var(--neon);box-shadow:0 0 8px rgba(61,225,255,.8);
}
.hero-visual{position:relative}
.hero-visual::before{
  content:"";position:absolute;inset:0;border-radius:var(--r-img);
  border:1px solid rgba(61,225,255,.35);transform:translate(12px,12px);pointer-events:none;
}
.hero-visual img{
  position:relative;width:100%;height:auto;border-radius:var(--r-img);
  box-shadow:0 24px 60px rgba(0,0,0,.45);
}
.hero-corner{position:absolute;width:22px;height:22px;border:2px solid rgba(61,225,255,.7)}
.hero-corner.tl{top:-10px;left:-10px;border-right:0;border-bottom:0}
.hero-corner.br{bottom:-10px;right:-10px;border-left:0;border-top:0}

/* ---------- 信任数据条 ---------- */
.trust{background:var(--dark-2);border-bottom:1px solid rgba(61,225,255,.14)}
.trust-list{display:grid;grid-template-columns:repeat(4,1fr);padding:26px 0}
.trust-item{
  display:flex;flex-direction:column;gap:4px;padding:0 24px;
  border-right:1px solid rgba(61,225,255,.18);
}
.trust-item:last-child{border-right:0}
.trust-num{font-size:30px;font-weight:700;color:#fff;line-height:1.15;variance:tabular-nums}
.trust-num span{font-size:14px;font-weight:500;color:var(--neon);margin-left:6px}
.trust-label{font-size:13px;color:rgba(255,255,255,.6);letter-spacing:.3px}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section-alt{background:var(--bg-alt)}
.section-head{max-width:760px;margin-bottom:36px}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:1.4px;
  color:var(--brand);text-transform:uppercase;
}
.section-title{
  margin-top:10px;font-size:clamp(24px,2.6vw,33px);line-height:1.3;font-weight:700;color:var(--ink);
}
.section-sub{margin-top:12px;font-size:16px;color:var(--body)}

/* ---------- 价值主张 ---------- */
.value-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.value-copy h2{margin-top:10px;font-size:clamp(24px,2.6vw,33px);line-height:1.3;color:var(--ink);font-weight:700}
.value-copy p{margin-top:16px;font-size:16px;color:var(--body)}
.value-points{margin-top:24px;display:flex;flex-direction:column;gap:14px}
.value-points li{display:flex;gap:12px;align-items:flex-start}
.value-points b{
  width:26px;height:26px;flex-shrink:0;border-radius:8px;
  background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:13px;margin-top:2px;
}
.value-points span{font-size:15px;color:var(--body)}
.value-points strong{color:var(--ink);font-weight:600}
.value-side{display:grid;gap:20px}
.mini-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--shadow);position:relative;overflow:hidden;
  transition:box-shadow var(--ease),transform var(--ease);
}
.mini-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--brand),var(--neon));
  transition:height var(--ease);
}
.mini-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.mini-card:hover::before{height:4px}
.mini-card h3{font-size:19px;color:var(--ink);font-weight:600;line-height:1.45}
.mini-card p{margin-top:10px;font-size:14.5px;color:var(--body)}

/* ---------- 功能分组 Tab ---------- */
.tab-list{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.tab-btn{
  padding:10px 20px;border-radius:999px;font-size:15px;font-weight:600;
  color:var(--body);background:#fff;border:1px solid var(--line);
  transition:all var(--ease);
}
.tab-btn:hover{color:var(--brand);border-color:var(--brand)}
.tab-btn.active{
  background:var(--brand);color:#fff;border-color:var(--brand);
  box-shadow:0 8px 20px rgba(27,95,217,.24);
}
.tab-panel{display:none}
.tab-panel.active{display:block;animation:fadeUp .32s ease both}
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.feature-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow);transition:all var(--ease);
}
.feature-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:#D6E4FA}
.feature-icon{
  width:40px;height:40px;border-radius:11px;margin-bottom:14px;
  background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;
}
.feature-item h3{font-size:17px;font-weight:600;color:var(--ink)}
.feature-item p{margin-top:8px;font-size:14.5px;color:var(--body)}

/* ---------- 场景流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.flow-step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow);transition:all var(--ease)}
.flow-step:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.flow-num{
  width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(145deg,var(--brand),#0E3F9C);color:#fff;font-weight:700;font-size:15px;
  box-shadow:0 0 0 4px rgba(27,95,217,.12);
}
.flow-shot{margin:18px 0 16px;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line)}
.flow-shot img{width:100%;height:132px;object-fit:cover;border-radius:0}
.flow-step h3{font-size:17px;font-weight:600;color:var(--ink)}
.flow-step p{margin-top:8px;font-size:14px;color:var(--body)}

/* ---------- 案例 ---------- */
.case-layout{display:grid;grid-template-columns:1.4fr 1fr;gap:24px}
.case-main{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:all var(--ease);
}
.case-main:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.case-main img{width:100%;height:260px;object-fit:cover;border-radius:0}
.case-body{padding:26px}
.case-body h3{font-size:21px;color:var(--ink);font-weight:700;line-height:1.45}
.case-body p{margin-top:12px;font-size:15px;color:var(--body)}
.badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:13px;font-weight:600;
  background:var(--brand-soft);color:var(--brand);
}
.badge.orange{background:rgba(255,107,44,.12);color:var(--orange-dark)}
.badge.green{background:rgba(22,163,74,.12);color:var(--success)}
.case-side{display:grid;gap:24px}
.case-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--shadow);transition:all var(--ease);
  display:flex;gap:16px;align-items:flex-start;
}
.case-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.case-card img{width:82px;height:82px;flex-shrink:0;object-fit:cover;border-radius:12px}
.case-card h4{font-size:17px;color:var(--ink);font-weight:600}
.case-card p{margin-top:8px;font-size:14px;color:var(--body)}

/* ---------- 方案价格 ---------- */
.table-wrap{
  overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow);margin-bottom:40px;
}
.table-wrap table{min-width:640px}
.table-wrap th,.table-wrap td{padding:12px 16px;font-size:14.5px;text-align:left;border-bottom:1px solid var(--line)}
.table-wrap thead th{background:var(--bg-alt);color:var(--ink);font-weight:700}
.table-wrap tbody tr:nth-child(even){background:#FAFCFF}
.table-wrap tbody tr:last-child td{border-bottom:0}
.table-wrap td.num{color:var(--ink);font-weight:600}
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.plan{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--shadow);transition:all var(--ease);
}
.plan:hover{box-shadow:var(--shadow-hover)}
.plan.featured{
  transform:translateY(-8px);border-color:rgba(61,225,255,.55);
  box-shadow:0 0 0 1px rgba(61,225,255,.35),0 18px 42px rgba(16,32,64,.16);
}
.plan-tag{
  position:absolute;top:-13px;right:22px;
  background:var(--orange);color:#fff;font-size:12px;font-weight:700;
  padding:5px 12px;border-radius:999px;letter-spacing:.4px;
}
.plan h3{font-size:19px;color:var(--ink);font-weight:700}
.plan-price{margin-top:16px;display:flex;align-items:baseline;gap:8px;color:var(--ink)}
.plan-price strong{font-size:32px;font-weight:700}
.plan-price span{font-size:14px;color:var(--muted)}
.plan-desc{margin-top:8px;font-size:14px;color:var(--body)}
.plan-list{margin-top:20px;display:flex;flex-direction:column;gap:12px}
.plan-list li{display:flex;gap:10px;font-size:14.5px;color:var(--body)}
.plan-list li::before{
  content:"";width:16px;height:16px;flex-shrink:0;margin-top:5px;border-radius:5px;
  background:var(--brand-soft);
  background-image:linear-gradient(135deg,var(--brand),var(--neon));
  opacity:.85;
}
.plan .btn{margin-top:24px}

/* ---------- 最新信息 ---------- */
.news-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:36px}
.news-more{font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:6px;color:var(--brand)}
.news-more:hover{gap:10px;color:var(--brand-dark)}
.news-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.news-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow);
  transition:all var(--ease);color:inherit;
}
.news-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);color:inherit}
.news-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-alt)}
.news-cover img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 420ms ease}
.news-card:hover .news-cover img{transform:scale(1.04)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.news-cat{
  align-self:flex-start;font-size:12px;font-weight:700;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:4px 10px;
}
.news-title{
  margin-top:12px;font-size:17.5px;font-weight:600;color:var(--ink);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color var(--ease);
}
.news-card:hover .news-title{color:var(--brand)}
.news-desc{
  margin-top:10px;font-size:14px;color:var(--body);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.news-arrow{color:var(--brand);font-weight:700}
.empty-state{
  padding:48px 24px;text-align:center;background:#fff;border:1px dashed #CFDCEB;
  border-radius:var(--r-card);
}
.empty-state .ei{
  width:52px;height:52px;margin:0 auto 16px;border-radius:14px;
  border:2px solid var(--line);position:relative;
}
.empty-state .ei::before,.empty-state .ei::after{
  content:"";position:absolute;background:var(--line);
}
.empty-state .ei::before{left:12px;right:12px;top:20px;height:2px}
.empty-state .ei::after{left:12px;right:22px;top:30px;height:2px}
.empty-state p{color:var(--body);font-size:15px}
.empty-state .btn{margin-top:20px}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);transition:all var(--ease);overflow:hidden}
.faq-item.open{border-left:4px solid var(--brand);background:#F8FBFF}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;text-align:left;font-size:16.5px;font-weight:600;color:var(--ink);
}
.faq-icon{position:relative;width:18px;height:18px;flex-shrink:0;transition:transform var(--ease)}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
}
.faq-icon::before{top:8px;left:0;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.open .faq-icon{transform:rotate(180deg)}
.faq-item.open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms ease}
.faq-a p{padding:0 24px 22px;font-size:15px;color:var(--body)}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;background:linear-gradient(180deg,#0B1220,#111C30);
  border-top:1px solid rgba(61,225,255,.22);border-bottom:1px solid rgba(61,225,255,.22);
  overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.16;
}
.cta-inner{position:relative;z-index:2;padding:76px 0;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(24px,2.6vw,33px);color:#fff;font-weight:700;line-height:1.32}
.cta-inner p{margin-top:12px;color:rgba(255,255,255,.72);font-size:16px;max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-brand .brand-mark{width:34px;height:34px;font-size:16px;border-radius:10px}
.footer-brand strong{color:#fff;font-size:15.5px;font-weight:700}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62)}
.footer-title{font-size:14px;font-weight:700;color:var(--neon);margin-bottom:16px;letter-spacing:.5px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.72);margin-bottom:11px}
.footer-contact b{color:#fff;font-weight:600}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero-inner{gap:36px}
  .value-grid{gap:36px}
  .flow{gap:18px}
}
@media (max-width:1023px){
  .nav-menu{display:none}
  .nav-toggle{display:flex}
  .hero-inner{grid-template-columns:1fr;padding:72px 0 64px}
  .hero-visual{order:2}
  .hero-sub{max-width:none}
  .trust-list{grid-template-columns:repeat(2,1fr);gap:20px 0}
  .trust-item:nth-child(2){border-right:0}
  .trust-item:nth-child(1),.trust-item:nth-child(2){border-bottom:1px solid rgba(61,225,255,.14);padding-bottom:20px}
  .trust-item:nth-child(3),.trust-item:nth-child(4){padding-top:4px}
  .value-grid{grid-template-columns:1fr}
  .flow{grid-template-columns:repeat(2,1fr)}
  .case-layout{grid-template-columns:1fr}
  .plans{grid-template-columns:1fr}
  .plan.featured{transform:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .hero-inner{padding:56px 0 52px}
  .hero-title{letter-spacing:.2px}
  .trust-num{font-size:24px}
  .case-card{flex-direction:column}
  .case-card img{width:100%;height:150px}
  .cta-inner{padding:56px 0}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{justify-content:flex-start}
  .case-main img{height:190px}
}
@media (max-width:520px){
  .flow{grid-template-columns:1fr}
  .trust-list{grid-template-columns:1fr}
  .trust-item{border-right:0;border-bottom:1px solid rgba(61,225,255,.14);padding:0 0 16px}
  .trust-item:last-child{border-bottom:0}
  .hero-cta .btn{width:100%}
  .cta-actions .btn{width:100%}
}

/* roulang page: article */
/* ========== 设计变量 ========== */
:root{
  --brand:#1B5FD9;
  --brand-dark:#1547A8;
  --neon:#3DE1FF;
  --accent:#FF6B2C;
  --accent-dark:#E85A1D;
  --bg:#F5F8FC;
  --bg-alt:#EEF3FA;
  --surface:#FFFFFF;
  --dark:#0B1220;
  --dark-2:#111C30;
  --text:#0E1726;
  --muted:#4A5A72;
  --faint:#8A98AC;
  --border:#E3EAF3;
  --border-strong:#D8E2EF;
  --success:#16A34A;
  --warn:#E5484D;
  --info:#2563EB;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-sm:0 1px 2px rgba(16,32,64,.05),0 8px 24px rgba(16,32,64,.06);
  --shadow-lg:0 14px 34px rgba(16,32,64,.13);
  --ease:220ms ease;
}

/* ========== 基础重置 ========== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--muted);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;letter-spacing:.01em}
p{margin:0 0 1.2em}
ul,ol{margin:0;padding:0}
li{list-style:none}
time,.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.site-header :focus-visible,.site-footer :focus-visible{outline-color:var(--neon)}

/* ========== 容器与通用 ========== */
.container{width:100%;max-width:var(--container,1200px);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-alt{background:var(--bg-alt)}
.section-head{max-width:720px;margin-bottom:36px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{font-size:clamp(24px,2.6vw,33px);line-height:1.3}
.section-head p{margin:12px 0 0;font-size:16px;color:var(--muted)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.12em;
  color:var(--brand);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--brand);border-radius:2px}
.divider{height:1px;background:var(--border);border:0;margin:0}

/* ========== 按钮 ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);
  font-size:15.5px;font-weight:600;line-height:1.2;
  border:1px solid transparent;background:transparent;cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(255,107,44,.28)}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,107,44,.34)}
.btn-accent:active{transform:translateY(0)}
.btn-outline{border-color:rgba(255,255,255,.36);color:#fff}
.btn-outline:hover{border-color:var(--neon);color:var(--neon);transform:translateY(-1px)}
.btn-ghost{border-color:var(--border-strong);color:var(--text);background:#fff}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn-neon{background:var(--neon);color:#04121F;border-radius:8px;font-weight:700}
.btn-neon:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-sm{padding:9px 16px;font-size:14px}

/* ========== 顶部导航 ========== */
.site-header{
  position:sticky;top:0;z-index:90;
  background:var(--dark);
  border-bottom:1px solid rgba(61,225,255,.18);
  box-shadow:0 10px 30px rgba(4,12,26,.35);
}
.header-inner{display:flex;align-items:center;gap:20px;height:68px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--neon));
  color:#04121F;font-weight:800;font-size:16px;flex-shrink:0;
  box-shadow:0 0 14px rgba(61,225,255,.35);
}
.logo-text{color:#fff;font-size:16px;font-weight:700;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;padding:9px 12px;border-radius:8px;
  color:rgba(255,255,255,.72);font-size:14.5px;font-weight:500;
  transition:color var(--ease),background var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;border-radius:2px;
  background:var(--neon);box-shadow:0 0 10px rgba(61,225,255,.85);
  transform:scaleX(0);transform-origin:left;transition:transform 200ms ease;
}
.nav-link:hover{color:#fff;background:rgba(61,225,255,.08)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:#fff;text-shadow:0 0 10px rgba(61,225,255,.75)}
.nav-link.active::after{transform:scaleX(1)}
.nav-link.active::before{
  content:"";position:absolute;left:2px;top:50%;transform:translateY(-50%);
  width:3px;height:16px;border-radius:2px;background:var(--neon);
  box-shadow:0 0 8px var(--neon);
}
.header-cta{margin-left:14px;flex-shrink:0}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid rgba(61,225,255,.28);background:rgba(61,225,255,.06);
  color:#fff;cursor:pointer;place-items:center;transition:background var(--ease),border-color var(--ease);
}
.nav-toggle:hover{background:rgba(61,225,255,.16);border-color:var(--neon)}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ========== 文章头图区 ========== */
.article-hero{position:relative;background:var(--dark);color:#fff;padding:44px 0 48px;overflow:hidden}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(100deg,rgba(11,18,32,.95) 6%,rgba(11,18,32,.82) 52%,rgba(13,26,48,.68) 100%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
.article-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(61,225,255,.6),transparent);
}
.article-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.6);margin-bottom:20px}
.breadcrumb a{color:rgba(255,255,255,.72);transition:color var(--ease)}
.breadcrumb a:hover{color:var(--neon)}
.breadcrumb .sep{color:rgba(255,255,255,.32)}
.breadcrumb .current{color:#fff;max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.art-badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 13px;border-radius:999px;font-size:13px;font-weight:600;
  color:var(--neon);background:rgba(61,225,255,.1);
  border:1px solid rgba(61,225,255,.34);
}
.article-hero h1{
  margin:16px 0 0;max-width:19em;
  color:#fff;font-size:clamp(28px,3.6vw,42px);line-height:1.24;font-weight:700;
}
.art-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:22px;font-size:13.5px;color:rgba(255,255,255,.72)}
.art-meta .meta-key{color:rgba(255,255,255,.5);margin-right:5px}
.art-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(61,225,255,.6)}

/* ========== 文章骨架 ========== */
.article-shell{padding:56px 0 88px}
.article-grid{display:grid;grid-template-columns:238px minmax(0,1fr);gap:56px;max-width:1040px;margin:0 auto;align-items:start}
.article-main{min-width:0}

/* 目录 */
.toc{position:relative}
.toc-inner{position:sticky;top:92px}
.toc-title{
  font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--faint);
  padding-bottom:12px;border-bottom:1px solid var(--border);margin-bottom:14px;
}
.toc-nav{display:flex;flex-direction:column;gap:2px;max-height:60vh;overflow:auto}
.toc-link{
  display:block;padding:8px 12px;font-size:14px;color:var(--muted);
  border-left:2px solid transparent;border-radius:0 8px 8px 0;
  transition:color var(--ease),background var(--ease),border-color var(--ease);
}
.toc-link:hover{color:var(--brand);background:rgba(27,95,217,.06)}
.toc-link.lv3{padding-left:24px;font-size:13.5px;color:var(--faint)}
.toc-link.current{color:var(--brand);font-weight:600;border-left-color:var(--brand);background:rgba(27,95,217,.07)}

/* 正文排版 */
.prose{font-size:16px;line-height:1.85;color:var(--muted);overflow-wrap:break-word}
.prose>*:first-child{margin-top:0}
.prose h2{
  position:relative;margin:2.4em 0 .9em;padding-left:14px;
  font-size:clamp(22px,2.2vw,28px);line-height:1.35;color:var(--text);
  scroll-margin-top:92px;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.26em;bottom:.26em;width:6px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--neon));
}
.prose h3{
  margin:1.8em 0 .7em;font-size:20px;line-height:1.45;font-weight:600;color:var(--text);
  scroll-margin-top:92px;
}
.prose h4{margin:1.5em 0 .6em;font-size:17px;font-weight:600;color:var(--text)}
.prose p{margin:0 0 1.6em}
.prose ul,.prose ol{margin:0 0 1.6em;padding-left:1.35em}
.prose ul li{list-style:disc}
.prose ol li{list-style:decimal}
.prose li{margin-bottom:.6em}
.prose li::marker{color:var(--brand)}
.prose strong{color:var(--text);font-weight:600}
.prose a{color:var(--brand);border-bottom:1px solid rgba(27,95,217,.32);transition:border-color var(--ease),color var(--ease)}
.prose a:hover{color:var(--brand-dark);border-bottom-color:var(--brand-dark)}
.prose blockquote{
  margin:1.8em 0;padding:16px 22px;border-left:4px solid var(--brand);
  background:var(--bg-alt);border-radius:0 var(--radius-img) var(--radius-img) 0;color:var(--text);
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{border-radius:var(--radius-img);margin:1.6em 0;box-shadow:var(--shadow-sm)}
.prose figcaption,.prose .caption{font-size:13px;color:var(--faint);text-align:center;margin:-.8em 0 1.6em}
.prose table{width:100%;border-collapse:collapse;margin:1.8em 0;font-size:15px;background:#fff;border-radius:12px;overflow:hidden}
.prose thead th{background:var(--bg-alt);font-weight:700;color:var(--text);text-align:left}
.prose th,.prose td{padding:12px 16px;border:1px solid var(--border)}
.prose tbody tr:nth-child(even){background:#FAFCFF}
.prose hr{border:0;border-top:1px solid var(--border);margin:2.4em 0}
.prose code{background:var(--bg-alt);border-radius:6px;padding:2px 6px;font-size:14px;color:var(--brand-dark)}

/* 空态 */
.empty-state{
  text-align:center;padding:64px 24px;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-card);box-shadow:var(--shadow-sm);
}
.empty-state .empty-icon{
  width:52px;height:52px;margin:0 auto 16px;border-radius:14px;display:grid;place-items:center;
  background:var(--bg-alt);color:var(--brand);font-size:22px;font-weight:700;
}
.empty-state p{color:var(--muted);margin:0 0 20px}

/* 标签与分享 */
.tags-share{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  margin-top:48px;padding-top:24px;border-top:1px solid var(--border);
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;padding:5px 13px;border-radius:999px;
  font-size:13px;color:var(--muted);background:#fff;border:1px solid var(--border);
  transition:color var(--ease),border-color var(--ease),transform var(--ease);
}
.tag:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-1px)}
.share-row{display:flex;align-items:center;gap:10px}
.share-row .share-label{font-size:13px;color:var(--faint)}

/* ========== 相关推荐 ========== */
.related{margin-top:56px;padding-top:40px;border-top:1px solid var(--border)}
.related h2{font-size:20px;margin-bottom:20px}
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:22px}
.news-card{
  position:relative;display:flex;flex-direction:column;background:#fff;
  border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.news-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--brand),var(--neon));
  transition:height var(--ease);
}
.news-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px);border-color:#D4E1F2}
.news-card:hover::before{height:4px}
.news-card .thumb{aspect-ratio:16/9;overflow:hidden}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;margin:0;box-shadow:none;transition:transform 420ms ease}
.news-card:hover .thumb img{transform:scale(1.05)}
.news-card .body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1}
.news-card .chip{
  align-self:flex-start;font-size:12px;font-weight:600;color:var(--brand);
  background:rgba(27,95,217,.08);border-radius:999px;padding:4px 11px;margin-bottom:12px;
}
.news-card h3{font-size:17px;line-height:1.5;margin-bottom:10px;transition:color var(--ease)}
.news-card:hover h3{color:var(--brand)}
.news-card p{font-size:14px;line-height:1.7;color:var(--muted);margin:0 0 16px}
.news-card .foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--faint);border-top:1px solid var(--border);padding-top:13px;
}
.news-card .arrow{color:var(--brand);font-weight:700}

/* ========== 上一篇 / 下一篇 ========== */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:40px}
.post-nav a{
  display:block;padding:16px 18px;background:#fff;border:1px solid var(--border);
  border-radius:12px;box-shadow:var(--shadow-sm);
  transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.post-nav a:hover{border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.post-nav .pn-label{font-size:12px;color:var(--faint);letter-spacing:.08em}
.post-nav .pn-title{display:block;margin-top:6px;font-size:15px;font-weight:600;color:var(--text);line-height:1.5}
.post-nav .next{text-align:right}

/* ========== 返回入口 ========== */
.back-row{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.back-row .hint{font-size:13.5px;color:var(--faint)}

/* ========== 页脚 ========== */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand strong{color:#fff;font-size:16px;font-weight:700}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);margin:0}
.footer-title{color:var(--neon);font-size:14px;font-weight:700;margin-bottom:16px;letter-spacing:.04em}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);transition:color var(--ease),transform var(--ease)}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-contact li{font-size:14px;line-height:1.9;color:rgba(255,255,255,.72)}
.footer-contact b{color:rgba(255,255,255,.9);font-weight:600}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 26px;font-size:13px;color:rgba(255,255,255,.56);
}

/* ========== 响应式 ========== */
@media (max-width:1279px){
  .article-grid{gap:40px}
}
@media (max-width:1023px){
  .container{padding:0 20px}
  .section{padding:64px 0}
  .nav-menu{
    position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);
    flex-direction:column;align-items:stretch;gap:4px;margin-left:0;
    padding:88px 20px 28px;background:var(--dark);
    border-left:1px solid rgba(61,225,255,.18);
    transform:translateX(101%);transition:transform 260ms ease;z-index:80;overflow:auto;
  }
  .nav-menu.open{transform:translateX(0)}
  .nav-link{height:48px;display:flex;align-items:center;border-radius:8px;font-size:15px}
  .nav-link.active::before{left:0;height:22px}
  .nav-toggle{display:grid;margin-left:auto}
  .header-cta{display:none}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:0;max-width:760px}
  .toc{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .header-inner{height:64px;gap:12px}
  .logo-text{font-size:15px}
  .article-hero{padding:34px 0 38px}
  .article-hero h1{margin-top:14px}
  .article-shell{padding:40px 0 64px}
  .prose{font-size:15.5px;line-height:1.8}
  .prose h2{margin-top:2em}
  .prose table{font-size:14px}
  .prose th,.prose td{padding:10px 12px}
  .card-grid{grid-template-columns:1fr}
  .post-nav{grid-template-columns:1fr}
  .post-nav .next{text-align:left}
  .tags-share{align-items:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:32px}
  .footer-bottom{justify-content:flex-start}
}
@media (max-width:520px){
  .article-hero h1{font-size:26px}
  .art-meta{font-size:13px;gap:8px}
  .btn{padding:11px 18px;font-size:15px}
}

/* roulang page: category1 */
:root{
  --brand:#1B5FD9;
  --brand-deep:#1449A8;
  --orange:#FF6B2C;
  --neon:#3DE1FF;
  --ink:#0E1726;
  --text:#4A5A72;
  --muted:#8A98AC;
  --bg:#F5F8FC;
  --alt:#EEF3FA;
  --line:#E3EAF3;
  --line-soft:#D8E2EF;
  --white:#FFFFFF;
  --dark:#0B1220;
  --dark2:#111C30;
  --ok:#16A34A;
  --warn:#E5484D;
  --info:#2563EB;
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(16,32,64,.05),0 8px 24px rgba(16,32,64,.06);
  --sh-hover:0 14px 34px rgba(16,32,64,.13);
  --sh-dark:0 18px 40px rgba(4,10,24,.45);
  --ease:220ms ease;
  --nav-h:68px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--brand-deep)}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:.01em}
h1{font-size:clamp(30px,4vw,46px);line-height:1.22}
h2{font-size:clamp(24px,2.6vw,33px);line-height:1.3}
h3{font-size:20px;line-height:1.45;font-weight:600}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.num{font-variant-numeric:tabular-nums}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--alt{background:var(--alt)}
.section--white{background:var(--white)}
.section-head{max-width:780px}
.section-head h2{margin-bottom:12px}
.section-head p{color:var(--text);font-size:16px}
.section-head .eyebrow{margin-bottom:14px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--brand);text-transform:uppercase;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--orange);border-radius:2px}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--dark);
  border-bottom:1px solid rgba(61,225,255,.18);
}
.header-inner{
  height:var(--nav-h);
  display:flex;align-items:center;gap:24px;
}
.brand{display:flex;align-items:center;gap:12px;color:#fff;flex-shrink:0}
.brand:hover{color:#fff}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand),#2C7BF2);
  color:#fff;font-weight:700;font-size:19px;
  box-shadow:0 0 0 1px rgba(61,225,255,.35),0 6px 18px rgba(27,95,217,.45);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:16px;color:#fff;letter-spacing:.02em}
.brand-text span{font-size:11.5px;color:rgba(255,255,255,.6);letter-spacing:.06em}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;
  display:flex;align-items:center;
  height:38px;padding:0 14px;
  font-size:14.5px;color:rgba(255,255,255,.76);
  border-radius:8px;
  transition:color var(--ease),background var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;
  background:var(--neon);border-radius:2px;
  transform:scaleX(0);transform-origin:left;opacity:0;
  transition:transform var(--ease),opacity var(--ease);
  box-shadow:0 0 10px rgba(61,225,255,.9);
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.05)}
.nav-link:hover::after{transform:scaleX(1);opacity:1}
.nav-link.active{color:#fff;background:rgba(61,225,255,.08);text-shadow:0 0 12px rgba(61,225,255,.75)}
.nav-link.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:2px;background:var(--neon);
  box-shadow:0 0 10px rgba(61,225,255,.9);
}
.nav-link.active::after{transform:scaleX(1);opacity:1}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--orange);color:#1A0D03;box-shadow:0 8px 20px rgba(255,107,44,.32)}
.btn-primary:hover{background:#FF8149;color:#1A0D03;box-shadow:0 12px 26px rgba(255,107,44,.42)}
.btn-neon{background:var(--neon);color:#04202B;box-shadow:0 8px 20px rgba(61,225,255,.28)}
.btn-neon:hover{background:#6BEAFF;color:#04202B}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-soft)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:#fff}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-block{width:100%}
.btn[disabled]{opacity:.6;cursor:not-allowed;transform:none}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  padding:0;place-items:center;
}
.nav-toggle span{display:block;width:19px;height:2px;background:#fff;border-radius:2px;margin:4px auto}
.nav-toggle:hover{background:rgba(61,225,255,.14)}
.nav-drawer{
  display:none;position:fixed;inset:var(--nav-h) 0 0 0;
  background:var(--dark);z-index:55;
  padding:24px 18px 40px;overflow-y:auto;
}
.nav-drawer.open{display:block}
.drawer-close{
  position:absolute;top:16px;right:18px;width:44px;height:44px;
  border-radius:10px;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);color:#fff;font-size:22px;line-height:1;
}
.drawer-link{
  display:flex;align-items:center;height:48px;padding:0 14px;
  color:rgba(255,255,255,.8);font-size:16px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.drawer-link.active{color:#fff;border-left:3px solid var(--neon);padding-left:16px;
  text-shadow:0 0 10px rgba(61,225,255,.7)}
.drawer-cta{margin-top:22px;display:block;text-align:center}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  min-height:320px;display:flex;align-items:center;
  background:radial-gradient(900px 420px at 88% -10%,rgba(27,95,217,.35),transparent 60%),linear-gradient(150deg,var(--dark),var(--dark2));
  border-bottom:1px solid rgba(61,225,255,.18);
  padding:52px 0;
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(61,225,255,.6),transparent);
}
.hero-grid{display:grid;grid-template-columns:1.35fr .85fr;gap:44px;align-items:center;position:relative;z-index:2}
.hero-copy .eyebrow{color:var(--neon)}
.hero-copy .eyebrow::before{background:var(--orange)}
.hero-copy h1{color:#fff;margin:14px 0 16px}
.hero-copy h1 .accent{color:var(--neon);text-shadow:0 0 22px rgba(61,225,255,.45)}
.hero-sub{color:rgba(255,255,255,.72);font-size:17px;max-width:620px}
.hero-points{margin:22px 0 26px;display:flex;flex-wrap:wrap;gap:12px 26px}
.hero-points li{display:flex;align-items:center;gap:9px;color:rgba(255,255,255,.82);font-size:14.5px}
.hero-points li::before{content:"";width:7px;height:7px;border-radius:2px;background:var(--neon);
  box-shadow:0 0 10px rgba(61,225,255,.85);transform:rotate(45deg)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-actions .btn-ghost{color:#fff;border-color:rgba(255,255,255,.32);background:rgba(255,255,255,.04)}
.hero-actions .btn-ghost:hover{color:#fff;border-color:var(--neon);background:rgba(61,225,255,.12)}
.hero-figure{
  position:relative;border-radius:var(--r-img);overflow:hidden;
  border:1px solid rgba(61,225,255,.35);
  box-shadow:var(--sh-dark);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:8/5}
.hero-figure .fig-tag{
  position:absolute;left:14px;bottom:14px;
  background:rgba(11,18,32,.86);color:#fff;
  font-size:12.5px;padding:7px 13px;border-radius:var(--r-pill);
  border:1px solid rgba(61,225,255,.4);
}
.hero-figure::before,
.hero-figure::after{
  content:"";position:absolute;width:22px;height:22px;border:2px solid var(--neon);opacity:.85;
}
.hero-figure::before{top:10px;left:10px;border-right:0;border-bottom:0}
.hero-figure::after{bottom:10px;right:10px;border-left:0;border-top:0}

/* ---------- anchor bar ---------- */
.anchor-bar{
  position:sticky;top:var(--nav-h);z-index:40;
  background:#fff;border-bottom:1px solid var(--line);
  box-shadow:0 6px 18px rgba(16,32,64,.05);
}
.anchor-inner{display:flex;align-items:center;gap:10px;height:58px;overflow-x:auto;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-label{font-size:13px;font-weight:700;color:var(--muted);letter-spacing:.06em;white-space:nowrap;margin-right:6px}
.anchor-link{
  flex:0 0 auto;padding:8px 15px;border-radius:var(--r-pill);
  font-size:14px;color:var(--text);background:var(--alt);
  border:1px solid transparent;white-space:nowrap;
  transition:all var(--ease);
}
.anchor-link:hover{background:#fff;border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.anchor-link.is-active{background:var(--brand);color:#fff;border-color:var(--brand);box-shadow:0 6px 16px rgba(27,95,217,.28)}

/* ---------- groups ---------- */
.group-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:36px}
.group-card{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-card);
  transition:transform var(--ease),box-shadow var(--ease);
  overflow:hidden;
}
.group-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--brand),var(--neon));
  transition:height var(--ease);
}
.group-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover)}
.group-card:hover::before{height:4px}
.group-head{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.group-no{
  width:34px;height:34px;border-radius:9px;flex:0 0 auto;
  display:grid;place-items:center;font-size:14px;font-weight:700;
  background:var(--alt);color:var(--brand);font-variant-numeric:tabular-nums;
  border:1px solid var(--line);
}
.group-card h3{font-size:19px}
.group-desc{font-size:14.5px;color:var(--text);margin-bottom:16px}
.group-list li{
  display:flex;gap:10px;padding:9px 0;font-size:14.5px;
  border-top:1px dashed var(--line);
}
.group-list li:first-child{border-top:0}
.group-list li::before{
  content:"";flex:0 0 auto;width:6px;height:6px;margin-top:9px;border-radius:2px;
  background:var(--brand);transform:rotate(45deg);
}
.group-list b{color:var(--ink);font-weight:600}

/* ---------- table ---------- */
.table-wrap{margin-top:34px;border:1px solid var(--line);border-radius:var(--r-card);background:#fff;overflow-x:auto;box-shadow:var(--sh-card)}
table.min-table{min-width:760px;font-size:14.5px}
table.min-table caption{text-align:left;padding:18px 20px 0;font-size:13px;color:var(--muted)}
table.min-table th{
  background:var(--alt);color:var(--ink);font-weight:700;
  text-align:left;padding:14px 16px;border-bottom:1px solid var(--line);white-space:nowrap;
}
table.min-table td{padding:12px 16px;border-bottom:1px solid var(--line);vertical-align:top}
table.min-table tbody tr:nth-child(even){background:#FAFCFF}
table.min-table tbody tr:hover{background:#F2F7FF}
table.min-table tbody tr:last-child td{border-bottom:0}
.scroll-hint{display:none;font-size:12.5px;color:var(--muted);margin-top:8px}

/* ---------- modules ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:36px}
.feature-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-card);position:relative;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.feature-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;border-radius:var(--r-card) var(--r-card) 0 0;
  background:linear-gradient(90deg,var(--brand),var(--neon));
  transition:height var(--ease);
}
.feature-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:#CFE0F5}
.feature-card:hover::before{height:4px}
.feature-ico{
  width:42px;height:42px;border-radius:11px;margin-bottom:16px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(27,95,217,.12),rgba(61,225,255,.16));
  color:var(--brand);
}
.feature-ico svg{width:21px;height:21px;display:block}
.feature-card h3{font-size:18px;margin-bottom:8px}
.feature-card p{font-size:14.5px}
.tag{
  display:inline-block;padding:3px 11px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;
  background:rgba(27,95,217,.1);color:var(--brand);
}
.tag-orange{background:rgba(255,107,44,.12);color:#C64A14}
.tag-green{background:rgba(22,163,74,.12);color:#128040}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}

/* ---------- who / split ---------- */
.split{display:grid;grid-template-columns:1fr 1.05fr;gap:52px;align-items:center;margin-top:36px}
.split-media{position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-card)}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split-media .badge-float{
  position:absolute;right:14px;top:14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);
  padding:6px 14px;font-size:12.5px;font-weight:600;color:var(--brand);
  box-shadow:var(--sh-card);
}
.who-list{margin-top:22px}
.who-list li{
  display:flex;gap:16px;padding:18px 0;border-top:1px solid var(--line);
}
.who-list li:first-child{border-top:0;padding-top:0}
.who-no{
  flex:0 0 auto;width:30px;height:30px;border-radius:50%;
  display:grid;place-items:center;font-size:13px;font-weight:700;
  background:var(--dark);color:var(--neon);font-variant-numeric:tabular-nums;
}
.who-list h3{font-size:17px;margin-bottom:4px}
.who-list p{font-size:14.5px}

/* ---------- stats strip ---------- */
.stats-strip{
  margin-top:34px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  display:grid;grid-template-columns:repeat(4,1fr);box-shadow:var(--sh-card);overflow:hidden;
}
.stat-item{padding:26px 22px;border-left:1px solid var(--line);text-align:left}
.stat-item:first-child{border-left:0}
.stat-num{font-size:30px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;line-height:1.2}
.stat-num small{font-size:14px;font-weight:600;color:var(--brand);margin-left:4px}
.stat-label{font-size:13.5px;color:var(--muted);margin-top:6px}

/* ---------- faq ---------- */
.faq{margin-top:34px;display:grid;gap:12px;max-width:920px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease)}
.faq-item[open]{border-left:4px solid var(--brand);background:#F7FAFF;box-shadow:var(--sh-card)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;font-size:16.5px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  display:grid;place-items:center;background:var(--alt);color:var(--brand);
  font-size:16px;font-weight:700;line-height:1;
  transition:transform var(--ease),background var(--ease);
}
.faq-item[open] .faq-icon{transform:rotate(180deg);background:var(--brand);color:#fff}
.faq-body{padding:0 22px 20px;font-size:15px;color:var(--text)}
.faq-body ul{margin-top:10px;display:grid;gap:6px}
.faq-body ul li{position:relative;padding-left:16px;font-size:14.5px}
.faq-body ul li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--neon)}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(150deg,var(--dark),var(--dark2));
  border-top:1px solid rgba(61,225,255,.18);
  border-bottom:1px solid rgba(61,225,255,.18);
  padding:76px 0;color:#fff;
}
.cta-band .cta-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:.22;filter:saturate(.9);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.4fr .8fr;gap:40px;align-items:center}
.cta-inner h2{color:#fff;margin-bottom:12px}
.cta-inner p{color:rgba(255,255,255,.72);max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.cta-actions .btn-ghost{color:#fff;border-color:rgba(255,255,255,.34);background:rgba(255,255,255,.05)}
.cta-actions .btn-ghost:hover{color:#fff;border-color:var(--neon);background:rgba(61,225,255,.14)}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{width:36px;height:36px;font-size:18px}
.footer-brand strong{color:#fff;font-size:16px}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66)}
.footer-title{font-size:14px;font-weight:700;color:var(--neon);margin-bottom:16px;letter-spacing:.04em}
.footer-links{display:grid;gap:11px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);transition:color var(--ease),transform var(--ease)}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-contact{display:grid;gap:11px;font-size:14px;color:rgba(255,255,255,.72)}
.footer-contact b{color:rgba(255,255,255,.9);font-weight:600}
.footer-bottom{
  margin-top:44px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .group-grid,.card-grid{gap:20px}
  .split{gap:40px}
}
@media (max-width:1023px){
  .nav-menu{display:none}
  .nav-toggle{display:grid}
  .hero-grid{grid-template-columns:1fr;gap:28px}
  .page-hero{min-height:auto;padding:44px 0}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .group-grid{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:28px}
  .stats-strip{grid-template-columns:repeat(2,1fr)}
  .stat-item:nth-child(3){border-left:0;border-top:1px solid var(--line)}
  .stat-item:nth-child(4){border-top:1px solid var(--line)}
  .cta-inner{grid-template-columns:1fr}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .header-cta-desktop{display:none}
  .brand-text span{display:none}
  .group-grid{grid-template-columns:1fr}
  .card-grid{grid-template-columns:1fr}
  .stats-strip{grid-template-columns:1fr}
  .stat-item{border-left:0;border-top:1px solid var(--line)}
  .stat-item:first-child{border-top:0}
  .scroll-hint{display:block}
  .cta-band{padding:56px 0}
  .faq-item summary{padding:16px 18px;font-size:15.5px}
  .faq-body{padding:0 18px 18px}
  .footer-grid{grid-template-columns:1fr}
  .group-card,.feature-card{padding:22px}
  .hero-actions .btn{flex:1 1 100%}
}
@media (max-width:520px){
  h1{font-size:28px}
  .anchor-inner{height:52px}
  .brand-text strong{font-size:14.5px}
}

/* roulang page: category2 */
:root{
  --blue:#1B5FD9;
  --blue-dark:#1449A8;
  --orange:#FF6B2C;
  --cyan:#3DE1FF;
  --dark:#0B1220;
  --dark-2:#111C30;
  --bg:#F5F8FC;
  --surface:#FFFFFF;
  --surface-alt:#EEF3FA;
  --text:#0E1726;
  --text-2:#4A5A72;
  --text-3:#8A98AC;
  --border:#E3EAF3;
  --border-dark:rgba(61,225,255,.18);
  --success:#16A34A;
  --warn:#E5484D;
  --info:#2563EB;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-card:0 1px 2px rgba(16,32,64,.05),0 8px 24px rgba(16,32,64,.06);
  --shadow-hover:0 14px 34px rgba(16,32,64,.13);
  --container:1200px;
  --nav-h:68px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;border-radius:var(--r-img)}
a{color:var(--blue);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--blue-dark)}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:6px}
.site-header :focus-visible,.site-footer :focus-visible,.cta-band :focus-visible{outline-color:var(--cyan)}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ============ header / nav ============ */
.site-header{
  position:sticky;top:0;z-index:120;
  background:var(--dark);
  border-bottom:1px solid var(--border-dark);
  box-shadow:0 6px 24px rgba(4,10,22,.35);
}
.header-inner{display:flex;align-items:center;gap:20px;height:var(--nav-h)}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:#fff}
.brand:hover{color:#fff}
.brand-mark{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--blue),#0E3A8F);
  color:#fff;font-weight:700;font-size:18px;
  box-shadow:0 0 0 1px rgba(61,225,255,.35),0 0 16px rgba(61,225,255,.22);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.5px;white-space:nowrap}
.brand-sub{display:block;font-size:11px;font-weight:400;color:rgba(255,255,255,.55);letter-spacing:1px}

.nav-menu{display:flex;align-items:center;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:var(--nav-h);
  padding:0 14px;font-size:15px;color:rgba(255,255,255,.78);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;
  background:linear-gradient(90deg,var(--cyan),rgba(61,225,255,0));
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:#fff;text-shadow:0 0 12px rgba(61,225,255,.6)}
.nav-link.active::after{transform:scaleX(1);background:var(--cyan)}
.nav-link.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:18px;border-radius:2px;background:var(--cyan);
  box-shadow:0 0 10px rgba(61,225,255,.85);
}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:8px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;transition:all .22s ease;white-space:nowrap;
}
.btn-primary{background:var(--orange);color:#0B1220}
.btn-primary:hover{background:#FF7E45;color:#0B1220;transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,107,44,.32)}
.btn-primary:active{transform:translateY(0);background:#EE5A1B}
.btn-neon{background:var(--cyan);color:#0B1220;border-radius:8px}
.btn-neon:hover{background:#6BEBFF;color:#0B1220;transform:translateY(-1px);box-shadow:0 0 20px rgba(61,225,255,.5)}
.btn-neon:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}
.btn-ghost:hover{border-color:var(--cyan);color:#fff;background:rgba(61,225,255,.08)}
.btn-light{background:#fff;color:var(--blue);border-color:var(--border)}
.btn-light:hover{border-color:var(--blue);color:var(--blue-dark);box-shadow:var(--shadow-card)}
.btn-outline{background:transparent;color:var(--blue);border-color:#C9D9F0}
.btn-outline:hover{border-color:var(--blue);background:rgba(27,95,217,.06)}
.btn-lg{padding:14px 26px;font-size:16px}
.btn-block{width:100%}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  align-items:center;justify-content:center;color:#fff;
  border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.04);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle i{font-size:18px}

/* ============ hero ============ */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(120deg,#0B1220 0%,#111C30 58%,#0E2A52 100%);
  padding:56px 0 64px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center right;
  opacity:.28;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(11,18,32,.96) 0%,rgba(11,18,32,.78) 52%,rgba(11,18,32,.45) 100%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;
  color:var(--cyan);background:rgba(61,225,255,.1);
  border:1px solid rgba(61,225,255,.32);margin-bottom:18px;
}
.hero h1{
  font-size:clamp(30px,4vw,46px);line-height:1.22;font-weight:700;letter-spacing:.5px;
}
.hero-sub{margin-top:16px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.72);max-width:600px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-points{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:26px}
.hero-points li{position:relative;padding-left:18px;font-size:14px;color:rgba(255,255,255,.72)}
.hero-points li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;
  background:var(--cyan);box-shadow:0 0 10px rgba(61,225,255,.9);
}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;border-radius:var(--r-img);
  border:1px solid rgba(61,225,255,.32);
  box-shadow:0 20px 48px rgba(4,10,22,.55);
}
.hero-visual::before,.hero-visual::after{
  content:"";position:absolute;width:26px;height:26px;border:1px solid rgba(61,225,255,.6);
}
.hero-visual::before{top:-8px;left:-8px;border-right:0;border-bottom:0}
.hero-visual::after{bottom:-8px;right:-8px;border-left:0;border-top:0}

/* ============ sections ============ */
.section{padding:88px 0}
.section-alt{background:var(--surface-alt)}
.section-head{max-width:760px;margin-bottom:36px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:1.6px;
  color:var(--blue);text-transform:uppercase;margin-bottom:12px;
}
h2{font-size:clamp(24px,2.6vw,33px);line-height:1.3;font-weight:700}
.section-head p{margin-top:12px;color:var(--text-2);font-size:16px}
h3{font-size:20px;line-height:1.45;font-weight:600}

/* ============ timeline ============ */
.timeline{position:relative;max-width:900px;margin:0 auto}
.timeline::before{
  content:"";position:absolute;left:23px;top:14px;bottom:34px;width:2px;
  background:linear-gradient(180deg,rgba(61,225,255,.75),rgba(27,95,217,.35),rgba(27,95,217,0));
}
.tl-item{position:relative;padding:0 0 34px 76px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:0;top:0;width:48px;height:48px;border-radius:50%;
  display:grid;place-items:center;font-size:15px;font-weight:700;
  color:var(--cyan);background:var(--dark-2);
  border:1px solid rgba(61,225,255,.4);
  box-shadow:0 0 0 6px rgba(61,225,255,.06);
  font-variant-numeric:tabular-nums;
}
.tl-body{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  padding:24px 26px;box-shadow:var(--shadow-card);transition:all .22s ease;
}
.tl-body:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:#CFE0F6}
.tl-body h3{margin-bottom:8px}
.tl-body p{color:var(--text-2);font-size:15px}
.tl-notes{margin-top:14px;display:grid;gap:8px}
.tl-notes li{position:relative;padding-left:20px;font-size:14px;color:var(--text-2)}
.tl-notes li::before{
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;font-size:11px;
  color:var(--success);position:absolute;left:0;top:2px;
}
.tl-step-label{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:1px;
  color:var(--blue);background:rgba(27,95,217,.08);
  border-radius:999px;padding:3px 10px;margin-bottom:10px;
}

/* ============ table ============ */
.table-wrap{
  position:relative;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r-card);box-shadow:var(--shadow-card);
  overflow-x:auto;overflow-y:hidden;
}
.table-wrap table{min-width:760px}
.table-wrap thead th{
  background:var(--surface-alt);font-size:14px;font-weight:700;color:var(--text);
  text-align:left;padding:14px 16px;border-bottom:1px solid var(--border);white-space:nowrap;
}
.table-wrap tbody td{
  padding:14px 16px;font-size:14.5px;color:var(--text-2);border-bottom:1px solid var(--border);
}
.table-wrap tbody tr:nth-child(even){background:#FAFCFF}
.table-wrap tbody tr:last-child td{border-bottom:0}
.table-wrap tbody td:first-child{font-weight:600;color:var(--text)}
.table-hint{
  display:flex;align-items:center;gap:8px;margin-top:14px;
  font-size:13px;color:var(--text-3);
}
.badge{
  display:inline-block;padding:3px 10px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:rgba(27,95,217,.1);color:var(--blue);
}
.badge-orange{background:rgba(255,107,44,.13);color:#C24A14}
.badge-green{background:rgba(22,163,74,.12);color:#12813C}

/* ============ notice bars ============ */
.notice{
  display:flex;gap:16px;align-items:flex-start;
  border-radius:var(--r-card);padding:22px 24px;border:1px solid var(--border);
  background:var(--surface);box-shadow:var(--shadow-card);
}
.notice + .notice{margin-top:16px}
.notice-icon{
  flex:0 0 auto;width:40px;height:40px;border-radius:10px;display:grid;place-items:center;
  font-size:17px;
}
.notice-info .notice-icon{background:rgba(37,99,235,.1);color:var(--info)}
.notice-warn .notice-icon{background:rgba(229,72,77,.1);color:var(--warn)}
.notice-ok .notice-icon{background:rgba(22,163,74,.1);color:var(--success)}
.notice h3{font-size:17px;margin-bottom:6px}
.notice p{font-size:14.5px;color:var(--text-2)}

/* ============ cards ============ */
.grid-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;max-width:1100px;margin:0 auto}
.card{
  position:relative;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-card);
  transition:all .22s ease;display:flex;flex-direction:column;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--blue),var(--cyan));
  transition:height .22s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#CFE0F6}
.card:hover::before{height:4px}
.card-media{aspect-ratio:16/9;overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0}
.card-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px}
.card-body p{font-size:14.5px;color:var(--text-2)}
.card-meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--text-3)}
.card-meta span.dot::before{content:"·";margin:0 6px}

/* ============ faq ============ */
.faq{max-width:900px;margin:0 auto;display:grid;gap:14px}
.faq-item{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);overflow:hidden;transition:all .2s ease;
}
.faq-item[open]{border-left:4px solid var(--blue);background:#F7FAFF}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px;display:flex;align-items:center;gap:16px;
  font-size:16.5px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";margin-left:auto;font-size:22px;font-weight:400;color:var(--blue);
  transition:transform .2s ease;line-height:1;
}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg)}
.faq-item summary:hover{color:var(--blue)}
.faq-answer{padding:0 24px 22px;font-size:15px;color:var(--text-2)}
.faq-answer p + p{margin-top:10px}

/* ============ cta band ============ */
.cta-band{
  position:relative;overflow:hidden;color:#fff;padding:72px 0;
  background:linear-gradient(120deg,#0B1220 0%,#111C30 100%);
  border-top:1px solid var(--border-dark);border-bottom:1px solid var(--border-dark);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  opacity:.2;
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between}
.cta-inner h2{max-width:640px}
.cta-inner p{margin-top:12px;color:rgba(255,255,255,.72);max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ footer ============ */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:#fff}
.footer-brand strong{font-size:16px;font-weight:700}
.footer-col p{font-size:14px;line-height:1.8}
.footer-title{font-size:14px;font-weight:700;color:var(--cyan);letter-spacing:.6px;margin-bottom:16px}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);display:inline-block;transition:all .2s ease}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-contact{display:grid;gap:10px;font-size:14px}
.footer-contact b{color:#fff;font-weight:600}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ============ responsive ============ */
@media (max-width:1279px){
  .container{padding:0 22px}
  .grid-cards{gap:20px}
}
@media (max-width:1099px){
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:1023px){
  .hero-inner{grid-template-columns:1fr;gap:30px}
  .hero-visual{max-width:620px}
  .section{padding:64px 0}
  .section-head{margin-bottom:30px}
}
@media (max-width:979px){
  .nav-toggle{display:inline-flex}
  .nav-menu{
    position:fixed;left:0;right:0;top:var(--nav-h);bottom:0;
    flex-direction:column;align-items:stretch;margin:0;padding:12px 18px 28px;
    background:var(--dark);border-top:1px solid var(--border-dark);
    overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .22s ease,transform .22s ease,visibility .22s;
  }
  .nav-menu.open{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-link{
    height:48px;width:100%;padding:0 14px;font-size:16px;
    border-radius:10px;border-left:3px solid transparent;
  }
  .nav-link::after{display:none}
  .nav-link:hover{background:rgba(255,255,255,.05)}
  .nav-link.active{background:rgba(61,225,255,.09);border-left-color:var(--cyan)}
  .nav-link.active::before{display:none}
  .header-actions .btn-neon{padding:9px 14px;font-size:14px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .brand-text{font-size:15px}
  .brand-sub{display:none}
  .header-actions .btn-neon{display:none}
  .section{padding:56px 0}
  .hero{padding:44px 0 52px}
  .hero-sub{font-size:15.5px}
  .hero-points{gap:10px 18px}
  .timeline::before{left:17px}
  .tl-item{padding-left:58px;padding-bottom:26px}
  .tl-dot{width:36px;height:36px;font-size:13px}
  .tl-body{padding:20px}
  .grid-cards{grid-template-columns:1fr}
  .card-body{padding:20px}
  .faq-item summary{padding:16px 18px;font-size:15.5px}
  .faq-answer{padding:0 18px 18px}
  .cta-band{padding:56px 0}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:519px){
  .hero h1{font-size:28px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .notice{flex-direction:column;gap:12px}
  .brand-mark{width:32px;height:32px;font-size:16px}
  .brand-text{font-size:14px}
}

/* roulang page: category3 */
:root{
  --blue:#1B5FD9;
  --blue-dark:#1548A6;
  --blue-soft:#EEF3FA;
  --orange:#FF6B2C;
  --neon:#3DE1FF;
  --ink:#0E1726;
  --text:#4A5A72;
  --muted:#8A98AC;
  --bg:#F5F8FC;
  --white:#FFFFFF;
  --line:#E3EAF3;
  --dark-1:#0B1220;
  --dark-2:#111C30;
  --ok:#16A34A;
  --warn:#E5484D;
  --info:#2563EB;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow:0 1px 2px rgba(16,32,64,.05),0 8px 24px rgba(16,32,64,.06);
  --shadow-hover:0 14px 34px rgba(16,32,64,.13);
  --container:1200px;
  --font:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding-left:1.15em}
img{max-width:100%;display:block}
a{color:var(--blue);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--blue-dark)}
button,input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--dark-1);
  border-bottom:1px solid rgba(61,225,255,.18);
}
.header-inner{
  display:flex;align-items:center;gap:28px;
  height:68px;
}
.brand{display:flex;align-items:center;gap:11px;color:#fff;flex:0 0 auto}
.brand:hover{color:#fff}
.brand-mark{
  width:34px;height:34px;border-radius:9px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--blue),#0E3D96);
  box-shadow:0 0 0 1px rgba(61,225,255,.45),0 6px 16px rgba(27,95,217,.4);
  color:#fff;font-weight:700;font-size:16px;letter-spacing:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:15.5px;font-weight:700;letter-spacing:.2px;color:#fff}
.brand-text span{font-size:11.5px;color:rgba(255,255,255,.55);letter-spacing:.6px}

.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;
  display:block;
  padding:10px 14px;
  font-size:14.5px;
  color:rgba(255,255,255,.74);
  border-radius:8px;
  white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--neon);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
  box-shadow:0 0 10px rgba(61,225,255,.75);
}
.nav-link:hover{color:#fff;background:rgba(61,225,255,.07)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{
  color:#fff;
  background:rgba(61,225,255,.1);
  text-shadow:0 0 12px rgba(61,225,255,.7);
  padding-left:20px;
}
.nav-link.active::before{
  content:"";position:absolute;left:8px;top:50%;transform:translateY(-50%);
  width:3px;height:16px;border-radius:2px;background:var(--neon);
  box-shadow:0 0 10px rgba(61,225,255,.9);
}
.nav-link.active::after{transform:scaleX(1)}
.nav-cta{
  flex:0 0 auto;
  margin-left:12px;
  padding:9px 18px;
  border-radius:8px;
  background:var(--neon);
  color:#04202B;
  font-size:14.5px;font-weight:700;
  border:1px solid rgba(61,225,255,.9);
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
}
.nav-cta:hover{
  background:#66EBFF;color:#04202B;transform:translateY(-1px);
  box-shadow:0 8px 22px rgba(61,225,255,.35);
}
.nav-toggle{
  display:none;
  width:44px;height:44px;margin-left:auto;
  background:transparent;border:1px solid rgba(61,225,255,.35);border-radius:10px;
  color:#fff;cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.drawer{
  display:none;position:fixed;inset:0;z-index:120;
  background:rgba(11,18,32,.98);
  padding:22px 20px 40px;
}
.drawer.open{display:block}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.drawer-close{
  width:44px;height:44px;border-radius:10px;border:1px solid rgba(61,225,255,.35);
  background:transparent;color:#fff;font-size:20px;cursor:pointer;line-height:1;
}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{
  height:48px;display:flex;align-items:center;
  padding:0 14px;border-radius:8px;
  color:rgba(255,255,255,.82);font-size:16px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.drawer-nav a.active{
  color:#fff;background:rgba(61,225,255,.1);
  box-shadow:inset 3px 0 0 var(--neon);
}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;
  background:var(--dark-1);
  overflow:hidden;
  border-bottom:1px solid rgba(61,225,255,.18);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.32;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(11,18,32,.96) 0%,rgba(11,18,32,.82) 52%,rgba(17,28,48,.66) 100%);
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.35fr .85fr;gap:48px;
  align-items:center;
  padding:76px 0 72px;
}
.crumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:rgba(255,255,255,.6);margin-bottom:20px;
}
.crumb a{color:rgba(255,255,255,.72)}
.crumb a:hover{color:var(--neon)}
.crumb i{font-style:normal;color:rgba(61,225,255,.6)}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 13px;border-radius:999px;
  font-size:13px;color:var(--neon);
  background:rgba(61,225,255,.1);
  border:1px solid rgba(61,225,255,.35);
  margin-bottom:18px;
}
.hero-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--neon);box-shadow:0 0 8px var(--neon)}
.cat-hero h1{
  font-size:clamp(30px,4vw,46px);line-height:1.22;font-weight:700;color:#fff;
  letter-spacing:.3px;
}
.cat-hero h1 em{
  font-style:normal;color:var(--neon);text-shadow:0 0 22px rgba(61,225,255,.45);
}
.hero-sub{
  margin-top:16px;font-size:16.5px;line-height:1.8;
  color:rgba(255,255,255,.76);max-width:620px;
}
.hero-points{
  list-style:none;padding:0;margin:26px 0 0;
  display:flex;flex-direction:column;gap:11px;
}
.hero-points li{
  position:relative;padding-left:22px;
  font-size:15px;color:rgba(255,255,255,.82);
}
.hero-points li::before{
  content:"";position:absolute;left:0;top:9px;
  width:8px;height:8px;border-radius:2px;
  background:var(--neon);box-shadow:0 0 10px rgba(61,225,255,.8);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;
  border-radius:var(--radius-btn);
  font-size:15.5px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 10px 24px rgba(255,107,44,.28)}
.btn-primary:hover{background:#FF7F48;color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,107,44,.34)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:rgba(255,255,255,.04);color:#fff;border-color:rgba(255,255,255,.32)}
.btn-ghost:hover{color:#fff;border-color:var(--neon);background:rgba(61,225,255,.1);transform:translateY(-2px)}
.btn-line{background:#fff;color:var(--blue);border-color:var(--line)}
.btn-line:hover{border-color:var(--blue);color:var(--blue-dark);transform:translateY(-2px);box-shadow:var(--shadow-hover)}

.hero-visual{
  position:relative;
  border:1px solid rgba(61,225,255,.32);
  border-radius:18px;
  overflow:hidden;
  box-shadow:0 24px 60px rgba(0,0,0,.45);
}
.hero-visual img{width:100%;height:330px;object-fit:cover}
.hero-visual figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 16px;
  font-size:13px;color:rgba(255,255,255,.86);
  background:linear-gradient(180deg,rgba(11,18,32,0),rgba(11,18,32,.9));
}
.corner{position:absolute;width:22px;height:22px;border:1px solid rgba(61,225,255,.75)}
.corner.tl{top:10px;left:10px;border-right:0;border-bottom:0}
.corner.br{bottom:10px;right:10px;border-left:0;border-top:0}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section.alt{background:var(--white)}
.section-head{max-width:760px;margin-bottom:36px}
.section-head .eyebrow{
  display:inline-block;font-size:13px;letter-spacing:2px;color:var(--blue);
  font-weight:700;margin-bottom:10px;
}
.section-head h2{
  font-size:clamp(24px,2.6vw,33px);line-height:1.3;font-weight:700;color:var(--ink);
}
.section-head p{margin-top:12px;font-size:15.5px;color:var(--text)}

/* ---------- gallery ---------- */
.gallery{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  grid-auto-rows:152px;
  gap:20px;
}
.gallery figure{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);
  transition:transform .22s ease,box-shadow .22s ease;
  background:var(--blue-soft);
}
.gallery figure:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.gallery img{width:100%;height:100%;object-fit:cover}
.gallery figure.main{grid-column:span 2;grid-row:span 2}
.gallery figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 16px;
  background:linear-gradient(180deg,rgba(11,18,32,0),rgba(11,18,32,.88));
  color:#fff;
}
.gallery figcaption b{display:block;font-size:15.5px;font-weight:600;line-height:1.4}
.gallery figcaption span{font-size:12.5px;color:rgba(255,255,255,.72)}
.gallery figure:not(.main) figcaption b{font-size:14px}
.gallery .offset-down{transform:translateY(20px)}
.gallery .offset-down:hover{transform:translateY(17px)}
.gallery .offset-up{transform:translateY(-20px)}
.gallery .offset-up:hover{transform:translateY(-23px)}

/* ---------- scene cards ---------- */
.scene-grid{
  display:grid;grid-template-columns:repeat(2,1fr);gap:24px;
}
.scene-card{
  position:relative;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 26px 24px;box-shadow:var(--shadow);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  overflow:hidden;
}
.scene-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--blue),var(--neon));
  transition:height .22s ease;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#D2E0F2}
.scene-card:hover::before{height:4px}
.scene-head{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.scene-num{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  display:grid;place-items:center;
  background:var(--blue-soft);color:var(--blue);
  font-weight:700;font-size:15px;font-variant-numeric:tabular-nums;
}
.scene-card h3{font-size:19px;font-weight:600;color:var(--ink);line-height:1.45}
.scene-card p{font-size:14.5px;color:var(--text)}
.scene-list{list-style:none;padding:0;margin:16px 0 0;display:grid;gap:8px}
.scene-list li{
  position:relative;padding-left:18px;font-size:14px;color:var(--text);
}
.scene-list li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;
  background:var(--blue);
}
.scene-meta{
  margin-top:18px;padding-top:14px;border-top:1px dashed var(--line);
  display:flex;flex-wrap:wrap;gap:8px;
}
.chip{
  display:inline-block;padding:4px 11px;border-radius:999px;
  font-size:12.5px;background:var(--blue-soft);color:var(--blue-dark);
}
.chip.orange{background:rgba(255,107,44,.12);color:#C24A16}
.chip.neon{background:rgba(61,225,255,.16);color:#0A6D82}

/* ---------- metrics band ---------- */
.metrics{
  position:relative;background:var(--dark-2);color:#fff;overflow:hidden;
}
.metrics::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  opacity:.18;
}
.metrics::after{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(61,225,255,.7),transparent);
}
.metrics-inner{position:relative;z-index:2;padding:70px 0}
.metrics-head{text-align:center;max-width:720px;margin:0 auto 40px}
.metrics-head h2{font-size:clamp(23px,2.4vw,31px);font-weight:700;color:#fff;line-height:1.32}
.metrics-head p{margin-top:12px;color:rgba(255,255,255,.72);font-size:15px}
.metrics-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid rgba(61,225,255,.18);
  border-bottom:1px solid rgba(61,225,255,.18);
}
.metric{
  padding:30px 24px;text-align:center;
  border-right:1px solid rgba(61,225,255,.18);
}
.metric:last-child{border-right:0}
.metric b{
  display:block;font-size:clamp(28px,3.2vw,38px);font-weight:700;color:#fff;
  font-variant-numeric:tabular-nums;letter-spacing:.5px;
}
.metric b em{font-style:normal;font-size:16px;color:var(--neon);margin-left:4px;font-weight:600}
.metric span{display:block;margin-top:8px;font-size:13.5px;color:rgba(255,255,255,.68)}

/* ---------- case detail ---------- */
.case-wrap{display:grid;grid-template-columns:1.5fr 1fr;gap:24px;align-items:start}
.case-main{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow);
}
.case-main img{width:100%;height:280px;object-fit:cover}
.case-body{padding:26px 28px 28px}
.case-body h3{font-size:21px;font-weight:600;color:var(--ink)}
.case-body p{margin-top:12px;font-size:15px;color:var(--text)}
.case-steps{list-style:none;padding:0;margin:20px 0 0;display:grid;gap:12px}
.case-steps li{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px 14px;border-radius:12px;background:var(--blue-soft);
  font-size:14.5px;color:var(--ink);
}
.case-steps li i{
  font-style:normal;flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  background:var(--blue);color:#fff;font-size:12.5px;display:grid;place-items:center;
  font-variant-numeric:tabular-nums;
}
.case-side{display:grid;gap:20px}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 22px 20px;box-shadow:var(--shadow);
  transition:transform .22s ease,box-shadow .22s ease;
}
.side-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.side-card img{width:100%;height:132px;object-fit:cover;border-radius:var(--radius-img);margin-bottom:14px}
.side-card h4{font-size:16.5px;font-weight:600;color:var(--ink)}
.side-card p{margin-top:8px;font-size:14px;color:var(--text)}
.side-card .chip{margin-top:12px}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;
  transition:border-color .2s ease,background .2s ease,box-shadow .2s ease;
  overflow:hidden;
}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  display:grid;place-items:center;font-size:16px;line-height:1;
  background:var(--blue-soft);color:var(--blue);
  transition:transform .2s ease,background .2s ease,color .2s ease;
}
.faq-item details[open],.faq-item[open]{background:#F8FBFF;border-color:#D2E0F2;box-shadow:inset 4px 0 0 var(--blue)}
.faq-item[open] summary{color:var(--blue-dark)}
.faq-item[open] .faq-icon{transform:rotate(180deg);background:var(--blue);color:#fff}
.faq-body{padding:0 22px 20px;font-size:14.8px;color:var(--text)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;background:var(--dark-1);color:#fff;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;opacity:.22;
}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(61,225,255,.75),transparent);
}
.cta-inner{
  position:relative;z-index:2;
  padding:64px 0;
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;color:#fff;line-height:1.32}
.cta-inner p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.75);max-width:640px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:var(--dark-1);color:rgba(255,255,255,.72);padding:64px 0 26px}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:36px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{width:30px;height:30px;font-size:14px;border-radius:8px}
.footer-brand strong{color:#fff;font-size:16px;font-weight:700}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.68)}
.footer-title{font-size:14px;color:var(--neon);font-weight:700;margin-bottom:16px;letter-spacing:.5px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s ease,transform .2s ease}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-contact{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.72)}
.footer-contact b{color:#fff;font-weight:600}
.footer-bottom{
  margin-top:44px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .hero-inner{gap:36px}
}
@media (max-width:1023px){
  .nav-menu,.nav-cta{display:none}
  .nav-toggle{display:flex}
  .hero-inner{grid-template-columns:1fr;gap:34px;padding:58px 0 56px}
  .hero-visual img{height:280px}
  .gallery{grid-template-columns:repeat(2,1fr);grid-auto-rows:150px}
  .gallery figure.main{grid-column:span 2;grid-row:span 1}
  .gallery .offset-down,.gallery .offset-up{transform:none}
  .gallery .offset-down:hover,.gallery .offset-up:hover{transform:translateY(-3px)}
  .scene-grid{grid-template-columns:1fr}
  .case-wrap{grid-template-columns:1fr}
  .metrics-grid{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(2){border-right:0}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid rgba(61,225,255,.18)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .hero-inner{padding:44px 0 46px}
  .cat-hero h1{font-size:clamp(26px,7vw,32px)}
  .hero-sub{font-size:15.5px}
  .hero-actions{width:100%}
  .hero-actions .btn{flex:1 1 auto}
  .hero-visual img{height:220px}
  .gallery{grid-template-columns:1fr;grid-auto-rows:auto;gap:16px}
  .gallery figure{height:190px}
  .gallery figure.main{grid-column:auto;height:230px}
  .gallery figure:not(.main) figcaption b{font-size:15px}
  .scene-card{padding:22px 20px}
  .metrics-grid{grid-template-columns:1fr}
  .metric{border-right:0;border-bottom:1px solid rgba(61,225,255,.18);padding:24px 18px}
  .metric:last-child{border-bottom:0}
  .case-body{padding:22px 20px 24px}
  .case-main img{height:200px}
  .cta-inner{padding:52px 0;flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .site-footer{padding:52px 0 22px}
  .brand-text span{display:none}
}

/* roulang page: category4 */
:root{
  --brand:#1B5FD9;
  --brand-deep:#1547A6;
  --brand-soft:#E8F0FE;
  --accent:#FF6B2C;
  --accent-deep:#E85518;
  --neon:#3DE1FF;
  --dark:#0B1220;
  --dark-2:#111C30;
  --bg:#F5F8FC;
  --surface:#FFFFFF;
  --surface-2:#EEF3FA;
  --surface-3:#FAFCFF;
  --text:#0E1726;
  --muted:#4A5A72;
  --muted-2:#8A98AC;
  --border:#E3EAF3;
  --border-strong:#D8E2EF;
  --success:#16A34A;
  --warn:#E5484D;
  --info:#2563EB;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow-card:0 1px 2px rgba(16,32,64,.05), 0 8px 24px rgba(16,32,64,.06);
  --shadow-hover:0 14px 34px rgba(16,32,64,.13);
  --gutter:24px;
  --section-y:88px;
  --font:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--muted);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color 200ms ease,opacity 200ms ease;}
a:hover{color:var(--brand-deep);}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;}

.container{max-width:1200px;margin:0 auto;padding:0 var(--gutter);width:100%;}

/* ============ header / nav ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--dark);
  border-bottom:1px solid rgba(61,225,255,.18);
}
.nav-inner{
  display:flex;align-items:center;gap:20px;
  min-height:68px;
}
.brand{
  display:flex;align-items:center;gap:10px;
  color:#fff;font-weight:700;letter-spacing:.01em;
  flex-shrink:0;
}
.brand:hover{color:#fff;}
.brand-mark{
  width:34px;height:34px;border-radius:9px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand),#0B1220 70%);
  border:1px solid rgba(61,225,255,.45);
  color:var(--neon);font-size:16px;font-weight:700;
  box-shadow:0 0 14px rgba(61,225,255,.22);
}
.brand-text{font-size:16px;white-space:nowrap;}
.brand-text small{display:block;font-size:11px;font-weight:500;color:rgba(255,255,255,.55);letter-spacing:.06em;}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:nowrap;}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:68px;padding:0 14px;
  font-size:15px;color:rgba(255,255,255,.74);
  white-space:nowrap;
  transition:color 200ms ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:14px;height:2px;
  background:var(--neon);transform:scaleX(0);transform-origin:left;
  transition:transform 200ms ease;
  box-shadow:0 0 10px rgba(61,225,255,.7);
}
.nav-link:hover{color:#fff;}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:#fff;text-shadow:0 0 12px rgba(61,225,255,.55);}
.nav-link.active::after{transform:scaleX(1);}
.nav-link.active::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;
  background:var(--neon);border-radius:2px;
  box-shadow:0 0 10px rgba(61,225,255,.7);
}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 18px;margin-left:8px;
  background:var(--neon);color:#062033;font-weight:700;font-size:15px;
  border-radius:8px;white-space:nowrap;
  transition:transform 200ms ease,box-shadow 200ms ease,filter 200ms ease;
}
.nav-cta:hover{color:#062033;transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 8px 20px rgba(61,225,255,.3);}
.nav-cta:active{transform:translateY(0);}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;
  border-radius:10px;border:1px solid rgba(61,225,255,.35);
  color:var(--neon);align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

.drawer{
  position:fixed;inset:0;z-index:80;
  background:var(--dark);
  padding:24px 20px 40px;
  display:none;flex-direction:column;
}
.drawer.open{display:flex;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{
  width:44px;height:44px;border-radius:10px;
  border:1px solid rgba(61,225,255,.35);color:var(--neon);
  display:grid;place-items:center;font-size:20px;line-height:1;
}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  height:48px;display:flex;align-items:center;
  padding-left:14px;color:rgba(255,255,255,.78);
  font-size:16px;border-bottom:1px solid rgba(255,255,255,.08);
  position:relative;
}
.drawer-nav a.active{color:#fff;text-shadow:0 0 12px rgba(61,225,255,.5);}
.drawer-nav a.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  background:var(--neon);border-radius:2px;
}
.drawer-cta{
  margin-top:24px;height:46px;border-radius:10px;
  background:var(--accent);color:#fff;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;
  border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;
  border:1px solid transparent;
  transition:transform 200ms ease,box-shadow 200ms ease,background-color 200ms ease,border-color 200ms ease,color 200ms ease;
}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(255,107,44,.28);}
.btn-primary:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(255,107,44,.34);}
.btn-ghost{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.35);}
.btn-ghost:hover{color:#fff;border-color:var(--neon);transform:translateY(-1px);box-shadow:0 10px 24px rgba(0,0,0,.25);}
.btn-outline{background:#fff;color:var(--text);border-color:var(--border-strong);}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);box-shadow:var(--shadow-card);}
.btn-block{width:100%;}
.btn[disabled]{opacity:.62;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ hero ============ */
.hero{
  position:relative;
  background:
    linear-gradient(115deg,rgba(11,18,32,.94) 0%,rgba(11,18,32,.82) 46%,rgba(17,28,48,.72) 100%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:rgba(255,255,255,.78);
  overflow:hidden;
  border-bottom:1px solid rgba(61,225,255,.18);
}
.hero::after{
  content:"";position:absolute;right:-120px;bottom:-160px;width:420px;height:420px;
  border:1px solid rgba(61,225,255,.22);border-radius:50%;
  pointer-events:none;
}
.hero-grid{
  display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  gap:48px;align-items:center;
  padding:74px 0 78px;position:relative;z-index:2;
}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--radius-pill);
  background:rgba(61,225,255,.1);
  border:1px solid rgba(61,225,255,.35);
  color:var(--neon);font-size:13px;letter-spacing:.04em;
  margin-bottom:18px;
}
.hero h1{
  color:#fff;
  font-size:clamp(30px,4vw,46px);
  line-height:1.22;font-weight:700;
  letter-spacing:.01em;
}
.hero-sub{
  margin-top:18px;font-size:17px;line-height:1.8;
  color:rgba(255,255,255,.76);max-width:620px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-points{margin-top:30px;display:grid;gap:12px;}
.hero-points li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:15px;color:rgba(255,255,255,.78);
}
.hero-points li::before{
  content:"";width:8px;height:8px;margin-top:9px;flex-shrink:0;
  background:var(--neon);border-radius:2px;
  box-shadow:0 0 10px rgba(61,225,255,.8);
}
.hero-panel{
  background:rgba(17,28,48,.86);
  border:1px solid rgba(61,225,255,.28);
  border-radius:var(--radius-card);
  padding:26px 24px;
  box-shadow:0 20px 44px rgba(0,0,0,.35);
}
.hero-panel h2{
  color:#fff;font-size:18px;font-weight:600;margin-bottom:16px;
}
.hero-panel-list{display:grid;gap:14px;}
.hero-panel-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding-bottom:14px;border-bottom:1px dashed rgba(61,225,255,.18);
}
.hero-panel-list li:last-child{border-bottom:0;padding-bottom:0;}
.hero-panel-list b{color:#fff;font-weight:600;font-size:15px;display:block;}
.hero-panel-list span{font-size:13px;color:rgba(255,255,255,.68);line-height:1.65;}
.dot-index{
  width:26px;height:26px;flex-shrink:0;border-radius:8px;
  display:grid;place-items:center;
  background:rgba(61,225,255,.12);
  border:1px solid rgba(61,225,255,.35);
  color:var(--neon);font-size:13px;font-weight:700;
}

/* ============ sections ============ */
.section{padding:var(--section-y) 0;}
.section.alt{background:var(--surface-2);}
.section.white{background:var(--surface);}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--brand);margin-bottom:10px;
}
.section-head h2{
  font-size:clamp(24px,2.6vw,33px);line-height:1.3;font-weight:700;color:var(--text);
  position:relative;padding-left:16px;
}
.section-head.center h2{padding-left:0;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:6px;
  border-radius:3px;background:var(--brand);
}
.section-head.center h2::before{display:none;}
.section-head p{margin-top:12px;font-size:16px;color:var(--muted);}

/* ============ support cards ============ */
.support-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;
}
.card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  position:relative;overflow:hidden;
  transition:transform 220ms ease,box-shadow 220ms ease;
}
.card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,var(--brand),var(--neon));
  transition:height 220ms ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.card:hover::before{height:4px;}
.card-media{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-img) var(--radius-img) 0 0;}
.support-card-body{padding:22px 24px 26px;}
.support-card-body h3{font-size:19px;font-weight:600;color:var(--text);line-height:1.45;}
.support-card-body p{margin-top:10px;font-size:15px;color:var(--muted);}
.badge{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-blue{background:var(--brand-soft);color:var(--brand);}
.badge-orange{background:#FFF0E8;color:var(--accent-deep);}
.badge-green{background:#E8F7EE;color:var(--success);}
.meta-row{
  display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted-2);
  margin-bottom:12px;flex-wrap:wrap;
}
.meta-row .sep{color:var(--border-strong);}
.plain-list{margin-top:14px;display:grid;gap:9px;}
.plain-list li{
  position:relative;padding-left:18px;font-size:15px;color:var(--muted);
}
.plain-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;border-radius:2px;
  background:var(--brand);opacity:.85;
}

/* ============ table ============ */
.table-wrap{
  position:relative;background:var(--surface);
  border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;
}
.table-scroll{overflow-x:auto;}
table.data-table{width:100%;border-collapse:collapse;min-width:720px;font-size:15px;}
table.data-table thead th{
  background:var(--surface-2);color:var(--text);font-weight:700;
  text-align:left;padding:14px 16px;border-bottom:1px solid var(--border);
  white-space:nowrap;font-size:14px;
}
table.data-table tbody td{
  padding:12px 16px;border-bottom:1px solid var(--border);
  color:var(--muted);vertical-align:top;
}
table.data-table tbody tr:nth-child(even){background:var(--surface-3);}
table.data-table tbody tr:last-child td{border-bottom:0;}
table.data-table td strong{color:var(--text);font-weight:600;}
.table-fade{
  position:absolute;top:0;right:0;bottom:0;width:36px;pointer-events:none;
  background:linear-gradient(90deg,rgba(255,255,255,0),rgba(255,255,255,.9));
}

/* ============ faq + form ============ */
.faq-layout{
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:40px;align-items:start;
}
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:14px;
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:border-color 200ms ease,background-color 200ms ease;
}
.faq-item.open{
  border-left:4px solid var(--brand);
  background:#F7FAFF;
}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);line-height:1.5;
}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  width:26px;height:26px;flex-shrink:0;border-radius:50%;
  border:1px solid var(--border-strong);
  display:grid;place-items:center;
  color:var(--brand);font-size:16px;line-height:1;
  transition:transform 200ms ease,background-color 200ms ease,border-color 200ms ease;
}
.faq-item.open .faq-icon{
  transform:rotate(180deg);
  background:var(--brand);border-color:var(--brand);color:#fff;
}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 240ms ease;
}
.faq-item.open .faq-a{max-height:420px;}
.faq-a-inner{
  padding:0 22px 20px;font-size:15px;color:var(--muted);
  border-top:1px dashed var(--border);margin-top:0;padding-top:16px;
}
.faq-a-inner p + p{margin-top:10px;}

.side-stack{display:grid;gap:20px;position:sticky;top:88px;}
.prep-card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  padding:22px 24px;
}
.prep-card h3{font-size:17px;font-weight:600;color:var(--text);margin-bottom:14px;}
.prep-list{display:grid;gap:11px;}
.prep-list li{
  display:flex;gap:10px;font-size:14px;color:var(--muted);line-height:1.65;
}
.prep-list li span{
  width:20px;height:20px;flex-shrink:0;border-radius:6px;
  background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:700;display:grid;place-items:center;margin-top:2px;
}
.form-card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-card);box-shadow:var(--shadow-hover);
  padding:26px 24px 28px;
}
.form-card h3{font-size:19px;font-weight:600;color:var(--text);}
.form-card .form-hint{margin-top:8px;font-size:13px;color:var(--muted-2);}
.form-grid{display:grid;gap:16px;margin-top:20px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--text);margin-bottom:7px;}
.field input,.field textarea{
  width:100%;background:#fff;
  border:1px solid var(--border-strong);border-radius:var(--radius-btn);
  padding:11px 14px;font-size:15px;color:var(--text);
  transition:border-color 180ms ease,box-shadow 180ms ease;
}
.field textarea{min-height:104px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:#A9B6C7;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(27,95,217,.12);
}
.field.error input,.field.error textarea{border-color:var(--warn);}
.field .err-msg{display:none;margin-top:6px;font-size:12.5px;color:var(--warn);}
.field.error .err-msg{display:block;}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--muted);}
.check-row input{width:18px;height:18px;margin-top:3px;accent-color:var(--brand);flex-shrink:0;}
.form-note{margin-top:14px;font-size:12.5px;color:var(--muted-2);line-height:1.7;}
.form-success{
  display:none;margin-top:20px;padding:18px 20px;
  border:1px solid #BFE7CD;border-left:4px solid var(--success);
  background:#F1FAF4;border-radius:12px;
}
.form-success.show{display:block;}
.form-success b{display:block;color:#12693A;font-size:15px;margin-bottom:6px;}
.form-success p{font-size:14px;color:#2C6B49;line-height:1.7;}
.form-error-tip{
  display:none;margin-top:14px;padding:12px 16px;border-radius:10px;
  background:#FDF1F1;border:1px solid #F3C9CA;color:#A6282C;font-size:13.5px;
}
.form-error-tip.show{display:block;}

/* ============ cta band ============ */
.cta-band{
  position:relative;
  background:
    linear-gradient(110deg,rgba(11,18,32,.95),rgba(17,28,48,.85)),
    url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  color:#fff;
  padding:72px 0;
  border-top:1px solid rgba(61,225,255,.18);
  border-bottom:1px solid rgba(61,225,255,.18);
}
.cta-inner{
  display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);
  gap:36px;align-items:center;
}
.cta-band h2{
  font-size:clamp(23px,2.4vw,30px);line-height:1.32;font-weight:700;color:#fff;
}
.cta-band p{margin-top:12px;font-size:16px;color:rgba(255,255,255,.74);max-width:600px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}

/* ============ footer ============ */
.site-footer{
  background:var(--dark);color:rgba(255,255,255,.72);
  padding:64px 0 26px;
  border-top:1px solid rgba(61,225,255,.16);
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand strong{color:#fff;font-size:16px;font-weight:700;}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);}
.footer-title{font-size:14px;font-weight:700;color:var(--neon);margin-bottom:14px;letter-spacing:.03em;}
.footer-links{display:grid;gap:10px;}
.footer-links a{
  font-size:14px;color:rgba(255,255,255,.72);
  transition:color 200ms ease,transform 200ms ease;
  display:inline-block;
}
.footer-links a:hover{color:#fff;transform:translateX(2px);}
.footer-contact{display:grid;gap:10px;font-size:14px;color:rgba(255,255,255,.72);}
.footer-contact b{color:rgba(255,255,255,.9);font-weight:600;}
.footer-bottom{
  margin-top:44px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ============ responsive ============ */
@media (max-width:1279px){
  .nav-menu{gap:0;}
  .nav-link{padding:0 10px;font-size:14.5px;}
  .hero-grid{gap:36px;}
}
@media (max-width:1023px){
  :root{--section-y:72px;}
  .nav-menu,.nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .hero-grid{grid-template-columns:1fr;padding:56px 0 60px;}
  .hero::after{display:none;}
  .support-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .side-stack{position:static;}
  .cta-inner{grid-template-columns:1fr;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  :root{--section-y:56px;--gutter:18px;}
  .brand-text{font-size:15px;}
  .brand-text small{display:none;}
  .hero-sub{font-size:15.5px;}
  .hero-actions .btn{width:100%;}
  .support-grid{grid-template-columns:1fr;}
  .card,.faq-item,.form-card,.prep-card,.table-wrap{box-shadow:0 1px 2px rgba(16,32,64,.05);}
  .cta-band{padding:56px 0;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .faq-q{padding:16px 18px;font-size:15px;}
  .faq-a-inner{padding:14px 18px 18px;}
}
@media (max-width:520px){
  .hero h1{font-size:29px;}
  .section-head h2{font-size:23px;}
  .btn{height:46px;padding:0 20px;font-size:15px;}
}