/* roulang page: index */
:root{
  --bg:#060A14;
  --bg-2:#0B1220;
  --glass:rgba(22,34,60,0.55);
  --glass-strong:rgba(26,41,72,0.72);
  --primary:#2F6BFF;
  --primary-soft:rgba(47,107,255,0.16);
  --mint:#00E6B8;
  --mint-soft:rgba(0,230,184,0.12);
  --amber:#FFB020;
  --danger:#FF5A6E;
  --text:#EAF0FF;
  --text-2:#A8B6D4;
  --text-3:#6C7A99;
  --border:rgba(120,160,255,0.18);
  --border-strong:rgba(120,160,255,0.34);
  --r-s:10px;
  --r-m:16px;
  --r-l:24px;
  --sh-card:0 12px 32px rgba(0,0,0,0.45);
  --sh-glow:0 8px 26px rgba(47,107,255,0.45);
  --sh-glow-hover:0 10px 34px rgba(47,107,255,0.7);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",sans-serif;
  --mono:ui-monospace,"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --tr:200ms ease-out;
}
*,*::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:1.85;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    radial-gradient(1200px 620px at 50% -12%, rgba(47,107,255,0.18), transparent 62%),
    linear-gradient(rgba(120,160,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,160,255,0.06) 1px, transparent 1px);
  background-size:auto,24px 24px,24px 24px;
  background-attachment:fixed;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--tr);}
a:hover{color:var(--mint);}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0.02em;line-height:1.35;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(47,107,255,0.4);}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.narrow{max-width:900px;margin-left:auto;margin-right:auto;}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:12px;font-weight:600;font-size:15px;
  letter-spacing:0.02em;transition:all var(--tr);white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#2F6BFF,#1B4BD8);
  color:#fff;box-shadow:var(--sh-glow);border:1px solid rgba(47,107,255,0.6);
}
.btn-primary:hover{box-shadow:var(--sh-glow-hover);transform:translateY(-1px);color:#fff;filter:brightness(1.1);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:rgba(47,107,255,0.08);color:var(--text);
  border:1px solid var(--border-strong);
}
.btn-ghost:hover{border-color:var(--mint);color:var(--mint);transform:translateY(-1px);background:rgba(0,230,184,0.08);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;border-radius:10px;}
.btn:disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--text-2);font-weight:600;}
.link-more::after{content:"→";transition:transform var(--tr);}
.link-more:hover{color:var(--mint);}
.link-more:hover::after{transform:translateX(4px);}

.badge{
  display:inline-flex;align-items:center;height:25px;padding:0 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;letter-spacing:0.02em;line-height:1;
}
.badge-mint{background:var(--mint-soft);color:var(--mint);border:1px solid rgba(0,230,184,0.35);}
.badge-blue{background:var(--primary-soft);color:#8FB2FF;border:1px solid rgba(47,107,255,0.35);}
.badge-amber{background:rgba(255,176,32,0.12);color:var(--amber);border:1px solid rgba(255,176,32,0.35);}

.glass{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--border);
  border-radius:var(--r-m);
  box-shadow:var(--sh-card), inset 0 1px 0 rgba(255,255,255,0.06);
}

.section{padding:96px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(24px,3vw,34px);}
.section-head p{color:var(--text-2);font-size:15px;margin-top:10px;max-width:660px;}
.eyebrow{font-size:12.5px;letter-spacing:0.18em;color:var(--mint);text-transform:uppercase;font-weight:600;margin-bottom:12px;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(6,10,20,0.82);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,107,255,0.8),rgba(0,230,184,0.6),transparent);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px;gap:24px;}
.logo{display:flex;align-items:center;gap:10px;min-width:0;}
.logo-dot{
  width:6px;height:6px;border-radius:50%;background:var(--mint);flex:none;
  box-shadow:0 0 10px var(--mint),0 0 20px rgba(0,230,184,0.6);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-main{font-size:16px;font-weight:700;color:var(--text);white-space:nowrap;}
.logo-sub{font-size:11px;color:var(--text-3);letter-spacing:0.14em;}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 14px;
  border-radius:10px;font-size:14.5px;color:var(--text-2);font-weight:500;transition:all var(--tr);
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--mint));
  transform:scaleX(0);transform-origin:left;transition:transform var(--tr);
}
.nav-links a:hover{color:var(--text);background:rgba(47,107,255,0.08);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:#8FB2FF;background:rgba(47,107,255,0.14);box-shadow:inset 0 0 0 1px rgba(47,107,255,0.28);}
.nav-links a.active::after{transform:scaleX(1);}
.nav-cta{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--border);align-items:center;justify-content:center;
  background:rgba(47,107,255,0.08);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;transition:all var(--tr);}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;transition:all var(--tr);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
body.drawer-open .nav-toggle span{background:transparent;}
body.drawer-open .nav-toggle span::before{top:0;transform:rotate(45deg);}
body.drawer-open .nav-toggle span::after{top:0;transform:rotate(-45deg);}
.nav-drawer{
  position:fixed;top:0;right:0;width:min(320px,84vw);height:100%;
  background:rgba(9,15,28,0.96);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-left:1px solid var(--border);
  transform:translateX(100%);transition:transform 260ms ease-out;
  z-index:130;display:flex;flex-direction:column;padding:88px 20px 28px;
}
body.drawer-open .nav-drawer{transform:translateX(0);}
.nav-drawer a{
  display:flex;align-items:center;height:48px;padding:0 14px;border-radius:12px;
  color:var(--text-2);font-size:15px;border:1px solid transparent;
}
.nav-drawer a:hover{background:rgba(47,107,255,0.1);color:var(--text);}
.nav-drawer a.active{color:#8FB2FF;background:rgba(47,107,255,0.14);border-color:rgba(47,107,255,0.3);}
.nav-drawer .btn{margin-top:auto;width:100%;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,6,12,0.7);opacity:0;pointer-events:none;
  transition:opacity 260ms ease-out;z-index:120;
}
body.drawer-open .drawer-mask{opacity:1;pointer-events:auto;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--border);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:0.5;z-index:0;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,20,0.72),rgba(6,10,20,0.94) 78%,var(--bg));
}
.hero-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:55% 45%;gap:56px;align-items:center;
  padding:96px 0 88px;
}
.hero-tag{display:inline-flex;align-items:center;gap:8px;margin-bottom:22px;}
.hero h1{
  font-size:clamp(30px,4.4vw,52px);line-height:1.22;letter-spacing:0.02em;
}
.hero h1 em{font-style:normal;color:var(--mint);}
.hero-sub{
  margin-top:22px;font-size:16.5px;color:var(--text-2);max-width:560px;line-height:1.9;
}
.hero-actions{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap;}
.hero-trust{
  display:flex;gap:28px;margin-top:42px;flex-wrap:wrap;
  padding-top:26px;border-top:1px solid var(--border);
}
.trust-item{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--text-2);}
.trust-item svg{flex:none;color:var(--mint);}
.hero-visual{position:relative;}
.hero-card{
  position:relative;border-radius:var(--r-l);overflow:hidden;
  border:1px solid var(--border-strong);
  box-shadow:0 24px 60px rgba(0,0,0,0.6);
  background:var(--bg-2);
}
.hero-card img{width:100%;aspect-ratio:16/11;object-fit:cover;opacity:0.88;}
.hero-card-cap{
  position:absolute;left:0;right:0;bottom:0;padding:20px 22px;
  background:linear-gradient(180deg,transparent,rgba(6,10,20,0.92));
}
.hero-card-cap strong{display:block;font-size:15px;color:var(--text);}
.hero-card-cap span{font-size:12.5px;color:var(--text-3);}
.hero-float{
  position:absolute;left:-22px;bottom:-26px;padding:16px 20px;border-radius:var(--r-m);
  display:flex;align-items:center;gap:12px;
}
.hero-float .num{font-family:var(--mono);font-size:22px;font-weight:700;color:var(--mint);}
.hero-float .lbl{font-size:12.5px;color:var(--text-2);}

/* ---------- 数据条 ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat-card{padding:26px 24px;border-radius:var(--r-m);}
.stat-card .num{
  font-family:var(--mono);font-size:30px;font-weight:700;color:var(--mint);
  letter-spacing:0.02em;line-height:1.2;
}
.stat-card .num small{font-size:15px;color:var(--text-2);font-weight:600;margin-left:2px;}
.stat-card h3{font-size:16px;margin-top:12px;font-weight:600;}
.stat-card p{font-size:14px;color:var(--text-3);line-height:1.7;margin-top:8px;}

/* ---------- 流程时间轴 ---------- */
.steps{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.steps::before{
  content:"";position:absolute;top:22px;left:6%;right:6%;height:1px;
  background:linear-gradient(90deg,rgba(47,107,255,0.6),rgba(0,230,184,0.5),rgba(47,107,255,0.1));
}
.step{position:relative;padding-top:0;text-align:left;}
.step-dot{
  width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-weight:700;font-size:15px;color:#fff;
  background:linear-gradient(135deg,#2F6BFF,#1240B8);
  box-shadow:0 0 0 6px rgba(47,107,255,0.12),0 8px 22px rgba(47,107,255,0.4);
  position:relative;z-index:1;
}
.step h3{font-size:17px;margin-top:20px;}
.step p{font-size:14.5px;color:var(--text-2);line-height:1.75;margin-top:10px;}
.step ul{margin-top:12px;display:flex;flex-direction:column;gap:6px;}
.step li{font-size:13.5px;color:var(--text-3);padding-left:16px;position:relative;}
.step li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:1px;background:var(--primary);}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;border-radius:var(--r-m);
  transition:transform var(--tr),border-color var(--tr),box-shadow var(--tr);
}
.news-card:hover{transform:translateY(-2px);border-color:var(--border-strong);box-shadow:0 16px 40px rgba(0,0,0,0.55);}
.news-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:#0E1729;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease-out;}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-thumb .badge{position:absolute;left:12px;top:12px;background:rgba(6,10,20,0.72);backdrop-filter:blur(6px);}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-body h3{
  font-size:16px;font-weight:600;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body h3 a:hover{color:var(--mint);}
.news-body p{
  font-size:14px;color:var(--text-3);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--text-3);}
.news-meta time{font-family:var(--mono);letter-spacing:0.02em;}
.empty-state{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;padding:56px 24px;border-radius:var(--r-m);border:1px dashed var(--border-strong);
  background:rgba(22,34,60,0.35);text-align:center;
}
.empty-state svg{color:var(--text-3);opacity:0.75;}
.empty-state p{font-size:14.5px;color:var(--text-2);}

/* ---------- 优惠阶梯 ---------- */
.ladder{position:relative;display:flex;flex-direction:column;gap:20px;padding-left:66px;}
.ladder::before{
  content:"";position:absolute;left:21px;top:18px;bottom:18px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,rgba(47,107,255,0.35),rgba(0,230,184,0.55));
}
.ladder-item{position:relative;padding:24px 26px;border-radius:var(--r-m);transition:all var(--tr);}
.ladder-item:hover{transform:translateX(2px);border-color:var(--border-strong);}
.ladder-idx{
  position:absolute;left:-66px;top:24px;width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-weight:700;font-size:14px;color:#8FB2FF;
  background:rgba(11,18,32,0.95);border:1px solid var(--border);
}
.ladder-item.lv2{border-color:rgba(120,160,255,0.28);}
.ladder-item.lv3{border-color:rgba(0,230,184,0.3);box-shadow:0 12px 34px rgba(0,230,184,0.1),inset 0 1px 0 rgba(255,255,255,0.06);}
.ladder-item.lv3 .ladder-idx{color:var(--mint);border-color:rgba(0,230,184,0.4);}
.ladder-item.lv4{border-color:rgba(47,107,255,0.55);box-shadow:0 14px 40px rgba(47,107,255,0.22),inset 0 1px 0 rgba(255,255,255,0.08);}
.ladder-item.lv4 .ladder-idx{color:#fff;background:linear-gradient(135deg,#2F6BFF,#1240B8);border-color:transparent;}
.ladder-top{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.ladder-top h3{font-size:18px;}
.ladder-item p{font-size:14.5px;color:var(--text-2);margin-top:10px;line-height:1.8;}
.ladder-cond{
  display:inline-flex;align-items:center;gap:8px;margin-top:14px;padding:8px 14px;border-radius:999px;
  background:rgba(47,107,255,0.1);border:1px solid var(--border);font-size:13px;color:var(--text-2);
}
.ladder-cond b{color:var(--mint);font-weight:600;}
.ladder-action{margin-top:18px;}

/* ---------- 套餐对比 ---------- */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
.plan{
  position:relative;padding:30px 26px;border-radius:var(--r-m);display:flex;flex-direction:column;
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.plan:hover{transform:translateY(-2px);border-color:var(--border-strong);}
.plan-top{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.plan h3{font-size:19px;}
.plan .price{
  font-family:var(--mono);font-size:30px;font-weight:700;color:var(--text);margin-top:18px;letter-spacing:0.01em;
}
.plan .price small{font-size:13px;color:var(--text-3);font-weight:500;margin-left:6px;}
.plan .desc{font-size:14px;color:var(--text-3);margin-top:8px;line-height:1.7;}
.plan-list{margin:22px 0;display:flex;flex-direction:column;gap:12px;flex:1;}
.plan-list li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:var(--text-2);line-height:1.65;}
.plan-list li svg{flex:none;margin-top:5px;color:var(--mint);}
.plan-list li.off{color:var(--text-3);text-decoration:line-through;text-decoration-color:rgba(108,122,153,0.6);}
.plan-list li.off svg{color:var(--text-3);}
.plan.featured{
  border-color:rgba(47,107,255,0.6);
  box-shadow:0 20px 54px rgba(47,107,255,0.24),inset 0 1px 0 rgba(255,255,255,0.08);
  background:var(--glass-strong);
}
.plan.featured .price{color:#8FB2FF;}
.plan-flag{
  position:absolute;top:-12px;left:50%;transform:translateX(-50%);
  padding:0 14px;height:26px;display:inline-flex;align-items:center;border-radius:999px;
  background:linear-gradient(135deg,#2F6BFF,#00A88A);color:#fff;font-size:12.5px;font-weight:600;
  box-shadow:0 8px 22px rgba(47,107,255,0.45);
}

/* ---------- 限时入口 ---------- */
.limited{
  display:grid;grid-template-columns:auto 1fr auto;gap:32px;align-items:center;
  padding:34px 36px;border-radius:var(--r-l);
  background:linear-gradient(135deg,rgba(47,107,255,0.16),rgba(0,230,184,0.08));
  border:1px solid rgba(47,107,255,0.34);
  box-shadow:0 16px 46px rgba(0,0,0,0.45),inset 0 1px 0 rgba(255,255,255,0.07);
}
.countdown{display:flex;gap:10px;}
.cd-block{
  min-width:66px;padding:12px 10px;border-radius:14px;text-align:center;
  background:rgba(6,10,20,0.7);border:1px solid rgba(255,176,32,0.3);
}
.cd-block .v{font-family:var(--mono);font-size:24px;font-weight:700;color:var(--amber);line-height:1.1;}
.cd-block .k{font-size:11.5px;color:var(--text-3);margin-top:4px;letter-spacing:0.08em;}
.limited-main h2{font-size:clamp(20px,2.4vw,26px);}
.limited-main p{font-size:14.5px;color:var(--text-2);margin-top:10px;}
.limited-note{font-size:12.5px;color:var(--text-3);margin-top:14px;}
.limited-side{display:flex;flex-direction:column;align-items:center;gap:12px;}
.qr-box{
  width:112px;height:112px;border-radius:14px;border:1px dashed var(--border-strong);
  display:flex;align-items:center;justify-content:center;background:rgba(6,10,20,0.55);
  color:var(--text-3);font-size:12.5px;text-align:center;padding:8px;
}

/* ---------- 表单 ---------- */
.contact-wrap{display:grid;grid-template-columns:1fr 1.05fr;gap:48px;align-items:start;}
.contact-points{display:flex;flex-direction:column;gap:18px;margin-top:26px;}
.contact-points li{display:flex;gap:14px;align-items:flex-start;}
.contact-points .ic{
  flex:none;width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:rgba(47,107,255,0.14);border:1px solid var(--border);color:#8FB2FF;
}
.contact-points strong{display:block;font-size:15px;font-weight:600;}
.contact-points span{font-size:13.5px;color:var(--text-3);line-height:1.7;}
.form-card{padding:30px;border-radius:var(--r-l);}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1/-1;}
.field label{font-size:13.5px;color:var(--text-2);font-weight:500;}
.field input,.field select,.field textarea{
  height:46px;padding:0 14px;border-radius:12px;
  background:rgba(6,10,20,0.66);border:1px solid var(--border);
  color:var(--text);transition:all var(--tr);width:100%;
}
.field textarea{height:auto;min-height:118px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#6C7A99 50%),linear-gradient(135deg,#6C7A99 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field input::placeholder,.field textarea::placeholder{color:#5A6885;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,107,255,0.18);
}
.field.error input,.field.error select,.field.error textarea{border-color:var(--danger);box-shadow:0 0 0 3px rgba(255,90,110,0.14);}
.field .hint{font-size:12.5px;color:var(--danger);display:none;}
.field.error .hint{display:block;}
.form-foot{grid-column:1/-1;display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:4px;}
.form-msg{font-size:13.5px;color:var(--mint);display:none;}
.form-msg.show{display:block;}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:14px;max-width:900px;margin:0 auto;}
.faq-item{
  border-radius:var(--r-m);border:1px solid var(--border);background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  overflow:hidden;transition:border-color var(--tr);
}
.faq-item.open{border-color:rgba(47,107,255,0.45);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--text);
  transition:color var(--tr);
}
.faq-q:hover{color:#8FB2FF;}
.faq-arrow{flex:none;transition:transform var(--tr);color:var(--text-3);}
.faq-item.open .faq-arrow{transform:rotate(180deg);color:var(--mint);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 300ms ease-out;}
.faq-a-inner{
  padding:0 22px 22px 22px;font-size:14.5px;color:var(--text-2);line-height:1.85;
  border-left:2px solid var(--primary);margin-left:22px;padding-left:18px;
}
.faq-item.open .faq-a{max-height:420px;}

/* ---------- CTA 带 ---------- */
.cta-band{
  padding:36px 40px;border-radius:var(--r-l);
  background:linear-gradient(120deg,rgba(47,107,255,0.28),rgba(0,230,184,0.14));
  border:1px solid rgba(47,107,255,0.4);
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  box-shadow:0 16px 44px rgba(0,0,0,0.45);
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);}
.cta-band p{font-size:14.5px;color:var(--text-2);margin-top:8px;}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--border);background:rgba(6,10,20,0.7);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;}
.footer-brand .logo{margin-bottom:18px;}
.footer-brand p{font-size:13.5px;color:var(--text-3);line-height:1.8;max-width:300px;}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:18px;font-weight:600;letter-spacing:0.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a,.footer-col li{font-size:13.5px;color:var(--text-3);transition:color var(--tr);}
.footer-col a:hover{color:var(--mint);}
.footer-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);
}
.footer-bottom .mono{font-family:var(--mono);}

/* ---------- 移动端粘性条 ---------- */
.sticky-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:110;
  padding:12px 16px calc(12px + env(safe-area-inset-bottom));
  background:rgba(6,10,20,0.92);backdrop-filter:blur(14px);
  border-top:1px solid var(--border);gap:12px;
}
.sticky-cta .btn{flex:1;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .news-grid{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:1023px){
  .section{padding:72px 0;}
  .nav-links,.nav-cta .btn-primary{display:none;}
  .nav-toggle{display:flex;}
  .hero-inner{grid-template-columns:1fr;gap:44px;padding:72px 0 64px;}
  .hero-visual{max-width:560px;}
  .hero-float{left:auto;right:16px;bottom:-20px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);gap:32px;}
  .steps::before{display:none;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .plans{grid-template-columns:1fr;gap:32px;}
  .plan.featured{order:-1;}
  .limited{grid-template-columns:1fr;gap:24px;}
  .limited-side{flex-direction:row;align-items:center;gap:20px;}
  .contact-wrap{grid-template-columns:1fr;gap:40px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:28px;}
  body{padding-bottom:74px;}
  .sticky-cta{display:flex;}
  .hero-actions{width:100%;}
  .hero-actions .btn{flex:1;}
  .hero-trust{gap:18px;flex-direction:column;align-items:flex-start;}
  .stat-grid{grid-template-columns:1fr;gap:16px;}
  .steps{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .ladder{padding-left:0;}
  .ladder::before{display:none;}
  .ladder-idx{position:static;margin-bottom:14px;}
  .ladder-item{padding:22px 20px;}
  .limited{padding:26px 20px;}
  .countdown{gap:8px;}
  .cd-block{min-width:58px;}
  .cd-block .v{font-size:20px;}
  .form-grid{grid-template-columns:1fr;}
  .form-card{padding:22px;}
  .cta-band{padding:28px 22px;flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .faq-q{font-size:15px;padding:18px;}
  .faq-a-inner{margin-left:16px;padding:0 18px 20px 14px;}
}
@media (max-width:520px){
  .hero h1{font-size:28px;}
  .hero-sub{font-size:15px;}
  .logo-main{font-size:15px;}
  .logo-sub{font-size:10px;}
  .btn{padding:0 18px;font-size:14.5px;}
}
@media (max-width:375px){
  .container{padding:0 14px;}
  .hero h1{font-size:25px;}
  .stat-card .num{font-size:26px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --bg:#060A14;
  --bg-2:#0B1220;
  --glass:rgba(22,34,60,.55);
  --glass-strong:rgba(22,34,60,.78);
  --primary:#2F6BFF;
  --primary-soft:rgba(47,107,255,.18);
  --mint:#00E6B8;
  --mint-soft:rgba(0,230,184,.14);
  --amber:#FFB020;
  --danger:#FF5A6E;
  --text:#EAF0FF;
  --text-2:#A8B6D4;
  --text-3:#6C7A99;
  --border:rgba(120,160,255,.18);
  --border-strong:rgba(120,160,255,.36);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --r-btn:12px;
  --shadow-card:0 12px 32px rgba(0,0,0,.45);
  --shadow-glow:0 8px 26px rgba(47,107,255,.45);
  --shadow-glow-hover:0 10px 34px rgba(47,107,255,.7);
  --container:1200px;
  --reading:760px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(900px 460px at 18% -6%, rgba(47,107,255,.18), transparent 70%),
    radial-gradient(700px 380px at 92% 4%, rgba(0,230,184,.10), transparent 72%),
    linear-gradient(rgba(120,160,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,160,255,.06) 1px, transparent 1px);
  background-size:auto,auto,24px 24px,24px 24px;
  background-repeat:no-repeat,no-repeat,repeat,repeat;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .2s ease-out}
a:hover{color:var(--mint)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;letter-spacing:.02em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
:focus-visible{outline:2px solid var(--mint);outline-offset:3px;border-radius:6px}
::selection{background:rgba(47,107,255,.4);color:#fff}
.mono{font-family:ui-monospace,Consolas,"Courier New",monospace;font-variant-numeric:tabular-nums}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,border-color .2s ease-out,color .2s ease-out,opacity .2s ease-out;
}
.btn-primary{
  background:linear-gradient(180deg,#3D78FF,#2456D8);
  color:#fff;box-shadow:var(--shadow-glow);
  border-color:rgba(150,190,255,.35);
}
.btn-primary:hover{color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-glow-hover);border-color:var(--primary)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 14px rgba(47,107,255,.5)}
.btn-ghost{background:rgba(255,255,255,.02);border-color:var(--border-strong);color:var(--text-2)}
.btn-ghost:hover{color:var(--text);border-color:var(--mint);box-shadow:0 0 0 1px rgba(0,230,184,.25)}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:12.5px;font-weight:600;letter-spacing:.02em;
  background:var(--mint-soft);border:1px solid rgba(0,230,184,.35);color:var(--mint);
}
.badge-blue{background:var(--primary-soft);border-color:rgba(47,107,255,.4);color:#9DBBFF}
.card{
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--border);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  padding:24px;
}
.section{padding:96px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.section-head h2{font-size:clamp(24px,3vw,34px)}
.section-head .more{font-size:14px;color:var(--text-2);border-bottom:1px solid transparent;padding-bottom:2px}
.section-head .more:hover{color:var(--mint);border-color:var(--mint)}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(6,10,20,.82);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,rgba(47,107,255,0),rgba(47,107,255,.9),rgba(0,230,184,.5),rgba(47,107,255,0));
  opacity:.55;transition:opacity .2s ease-out;
}
.site-header.is-scrolled::after{opacity:1}
.site-header.is-scrolled{box-shadow:0 10px 30px rgba(0,0,0,.45)}
.nav{display:flex;align-items:center;gap:28px;height:70px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-dot{
  width:9px;height:9px;border-radius:50%;background:var(--primary);
  box-shadow:0 0 10px rgba(47,107,255,.95),0 0 22px rgba(47,107,255,.55);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-main{font-size:17px;font-weight:700;letter-spacing:.03em;color:var(--text)}
.logo-sub{font-size:9.5px;letter-spacing:.3em;color:var(--text-3)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;height:70px;padding:0 14px;
  font-size:15px;color:var(--text-2);
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:18px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--mint));
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease-out;
}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{
  color:#fff;background:var(--primary-soft);border-radius:var(--r-sm);
}
.nav-links a.active::after{transform:scaleX(1);box-shadow:0 0 12px rgba(47,107,255,.9)}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;position:relative;width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--border);background:rgba(255,255,255,.02);
}
.nav-toggle span,
.nav-toggle::before,
.nav-toggle::after{
  content:"";position:absolute;left:12px;right:12px;height:2px;border-radius:2px;background:var(--text);
  transition:transform .2s ease-out,opacity .2s ease-out;
}
.nav-toggle span{top:21px}
.nav-toggle::before{top:14px}
.nav-toggle::after{top:28px}
.nav-toggle[aria-expanded="true"] span{opacity:0}
.nav-toggle[aria-expanded="true"]::before{transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"]::after{transform:translateY(-7px) rotate(-45deg)}
.nav-drawer{
  position:fixed;inset:0 0 0 auto;width:min(340px,86vw);z-index:90;
  background:rgba(8,13,26,.96);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border-left:1px solid var(--border);
  padding:88px 22px 24px;display:flex;flex-direction:column;gap:6px;
  transform:translateX(100%);transition:transform .24s ease-out;
}
.nav-drawer.is-open{transform:translateX(0)}
.nav-drawer a{display:flex;align-items:center;min-height:48px;padding:0 12px;border-radius:var(--r-sm);color:var(--text-2);font-size:15px}
.nav-drawer a:hover{background:rgba(255,255,255,.04);color:var(--text)}
.nav-drawer a.active{color:#fff;background:var(--primary-soft)}
.nav-drawer .drawer-cta{margin-top:auto}
body.nav-locked{overflow:hidden}
.nav-mask{position:fixed;inset:0;background:rgba(3,6,14,.6);z-index:85;opacity:0;pointer-events:none;transition:opacity .2s ease-out}
.nav-mask.is-open{opacity:1;pointer-events:auto}

/* ---------- Breadcrumb ---------- */
.crumb{padding:24px 0 0;font-size:13px;color:var(--text-3)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:var(--text-3)}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--mint)}
.crumb .current{color:var(--text)}

/* ---------- Article hero ---------- */
.article-hero{position:relative;margin-top:20px;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--border)}
.article-hero__bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.42;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(6,10,20,.92),rgba(6,10,20,.66));
}
.article-hero__inner{position:relative;z-index:2;padding:clamp(28px,5vw,56px)}
.article-hero h1{
  font-size:clamp(30px,4.4vw,52px);
  margin:18px 0 16px;max-width:16em;
}
.article-hero__lead{color:var(--text-2);font-size:16px;max-width:60ch}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:22px;font-size:13px;color:var(--text-3)}
.meta-row .dot{color:var(--text-3)}
.meta-row time{color:var(--text-2)}
.meta-badges{display:flex;gap:10px;flex-wrap:wrap}

/* ---------- Article body ---------- */
.article-wrap{padding:56px 0 96px}
.article-col{max-width:var(--reading);margin:0 auto}
.article-body{font-size:17px;line-height:1.9;color:#DCE5FA}
.article-body>*+*{margin-top:1.2em}
.article-body p{margin:0}
.article-body h2{
  position:relative;margin-top:40px;padding-left:14px;
  font-size:clamp(20px,2.3vw,26px);color:var(--text);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--mint));
  box-shadow:0 0 12px rgba(47,107,255,.6);
}
.article-body h3{font-size:20px;margin-top:32px;color:var(--text)}
.article-body a{color:#9DBBFF;border-bottom:1px solid rgba(157,187,255,.4)}
.article-body a:hover{color:var(--mint);border-color:var(--mint)}
.article-body strong{color:#fff}
.article-body ul,.article-body ol{padding-left:0}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-top:.55em}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 8px rgba(47,107,255,.8);
}
.article-body ol{counter-reset:olist}
.article-body ol li{counter-increment:olist}
.article-body ol li::before{
  content:counter(olist);position:absolute;left:0;top:.42em;
  width:18px;height:18px;border-radius:50%;font-size:11px;line-height:18px;text-align:center;
  color:#fff;background:var(--primary-soft);border:1px solid rgba(47,107,255,.55);
}
.article-body blockquote{
  margin:32px 0;padding:20px 22px;
  background:var(--glass);border:1px solid var(--border);border-left:3px solid var(--mint);
  border-radius:var(--r-md);color:var(--text-2);
  -webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);
}
.article-body img{border-radius:12px;margin:28px auto;box-shadow:var(--shadow-card)}
.article-body figure{margin:28px 0}
.article-body figcaption{text-align:center;color:var(--text-3);font-size:13px;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;font-size:14.5px;border:1px solid var(--border);border-radius:var(--r-sm);overflow:hidden}
.article-body th,.article-body td{padding:12px 14px;border:1px solid var(--border);text-align:left}
.article-body th{background:rgba(47,107,255,.14);color:var(--text)}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.025)}
.article-body code{font-family:ui-monospace,Consolas,monospace;font-size:.92em;background:rgba(255,255,255,.06);padding:2px 6px;border-radius:6px}
.article-body hr{border:0;height:1px;background:var(--border);margin:36px 0}
.article-empty{
  text-align:center;padding:56px 24px;
}
.article-empty__icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);border:1px solid rgba(47,107,255,.4);
}
.article-empty h2{font-size:24px;margin-bottom:10px}
.article-empty p{color:var(--text-2);margin-bottom:22px}

/* ---------- Tags / related / CTA ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px;padding-top:26px;border-top:1px solid var(--border)}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12.5px;color:var(--text-2);background:var(--primary-soft);border:1px solid rgba(47,107,255,.35);
  transition:color .2s ease-out,border-color .2s ease-out
}
.tag:hover{color:var(--mint);border-color:var(--mint)}
.back-links{display:flex;flex-wrap:wrap;gap:22px;margin-top:26px;font-size:14px}
.back-links a{color:var(--text-2);border-bottom:1px solid var(--border)}
.back-links a:hover{color:var(--mint);border-color:var(--mint)}

.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  display:flex;flex-direction:column;overflow:hidden;padding:0;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.post-card:hover{transform:translateY(-2px);border-color:var(--border-strong);box-shadow:0 18px 40px rgba(0,0,0,.5),0 0 0 1px rgba(47,107,255,.25)}
.post-card__media{position:relative;aspect-ratio:16/10;overflow:hidden}
.post-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.post-card:hover .post-card__media img{transform:scale(1.04)}
.post-card__media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,20,0),rgba(6,10,20,.55))}
.post-card__body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.post-card__title{
  font-size:17px;font-weight:600;color:var(--text);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card__desc{
  color:var(--text-3);font-size:14px;line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card__foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--text-3)}

.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(47,107,255,.28),rgba(0,230,184,.12));
  border:1px solid var(--border);
  padding:clamp(26px,4vw,44px);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;opacity:.2;
}
.cta-band>*{position:relative;z-index:2}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:10px}
.cta-band p{color:var(--text-2);font-size:15px;max-width:56ch}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--border);background:linear-gradient(180deg,rgba(11,18,32,.6),rgba(6,10,20,.95));padding:64px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{color:var(--text-3);font-size:14px;max-width:36ch}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{color:var(--text-3);font-size:14px}
.footer-col a{color:var(--text-2);font-size:14px}
.footer-col a:hover{color:var(--mint)}
.footer-bottom{
  margin-top:52px;padding:20px 0;border-top:1px solid var(--border);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* ---------- Sticky mobile CTA ---------- */
.sticky-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(6,10,20,.92);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-top:1px solid var(--border);
  gap:12px;
}
.sticky-cta .btn{flex:1}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .nav{height:64px;gap:16px}
  .nav-links{display:none}
  .nav-toggle{display:block}
  .nav-cta .btn{display:none}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  body{font-size:15.5px;line-height:1.8}
  .container{padding:0 18px}
  .section{padding:48px 0}
  .article-hero{margin-top:14px;border-radius:var(--r-md)}
  .article-hero h1{font-size:clamp(24px,7vw,32px)}
  .article-wrap{padding:36px 0 72px}
  .article-body{font-size:16.5px}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{margin-top:64px;padding-top:48px}
  .sticky-cta{display:flex}
  body{padding-bottom:76px}
  .cta-band{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
}
@media (max-width:520px){
  .logo-main{font-size:15.5px}
  .logo-sub{font-size:9px;letter-spacing:.22em}
  .article-hero__inner{padding:24px 20px}
  .card{padding:20px}
  .section-head{flex-direction:column;align-items:flex-start}
}
@media (max-width:375px){
  .article-body{font-size:16px}
  .meta-row{font-size:12.5px}
  .btn{height:46px;padding:0 18px;font-size:14.5px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .btn-primary{box-shadow:none}
}

/* roulang page: category1 */
:root{
  --bg:#060A14;
  --bg-soft:#0B1220;
  --glass:rgba(22,34,60,.55);
  --glass-strong:rgba(22,34,60,.78);
  --primary:#2F6BFF;
  --primary-soft:rgba(47,107,255,.12);
  --mint:#00E6B8;
  --amber:#FFB020;
  --danger:#FF5A6E;
  --text:#EAF0FF;
  --text-2:#A8B6D4;
  --text-3:#6C7A99;
  --line:rgba(120,160,255,.18);
  --line-strong:rgba(120,160,255,.38);
  --radius-s:10px;
  --radius-m:16px;
  --radius-l:24px;
  --pill:999px;
  --shadow-card:0 12px 32px rgba(0,0,0,.45);
  --glow:0 8px 26px rgba(47,107,255,.45);
  --glow-hover:0 10px 34px rgba(47,107,255,.7);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  --mono:ui-monospace,Consolas,"SFMono-Regular",Menlo,monospace;
  --section-y:96px;
}
*,*::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:1.85;
  color:var(--text);
  background:var(--bg);
  position:relative;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(120,160,255,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,160,255,.06) 1px,transparent 1px);
  background-size:24px 24px;
}
body::after{
  content:"";
  position:fixed;
  top:-260px;
  left:50%;
  width:1100px;
  height:640px;
  transform:translateX(-50%);
  z-index:0;
  pointer-events:none;
  background:radial-gradient(circle at 50% 50%,rgba(47,107,255,.18),transparent 68%);
}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.02em;line-height:1.35;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color 200ms ease-out;}
img{max-width:100%;display:block;}
button,input,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid rgba(0,230,184,.75);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1;}
.mono{font-family:var(--mono);}
section{position:relative;z-index:1;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(6,10,20,.82);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}
.site-header::after{
  content:"";
  display:block;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,107,255,.7),transparent);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;height:70px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-dot{
  width:8px;height:8px;border-radius:50%;background:var(--mint);
  box-shadow:0 0 12px var(--mint);flex-shrink:0;
}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-main{font-size:16px;font-weight:700;color:var(--text);letter-spacing:.02em;}
.logo-sub{font-family:var(--mono);font-size:10px;letter-spacing:.16em;color:var(--text-3);}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{
  position:relative;
  padding:9px 13px;
  font-size:15px;
  color:var(--text-2);
  border-radius:10px;
}
.nav-links a::after{
  content:"";
  position:absolute;left:13px;right:13px;bottom:3px;height:2px;
  border-radius:2px;background:var(--primary);
  transform:scaleX(0);transform-origin:left center;
  transition:transform 200ms ease-out;
}
.nav-links a:hover{color:var(--text);background:var(--primary-soft);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--primary);background:var(--primary-soft);}
.nav-links a.active::after{transform:scaleX(1);box-shadow:0 0 10px var(--primary);}
.nav-cta{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(22,34,60,.5);
  cursor:pointer;
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;left:12px;width:20px;height:2px;border-radius:2px;background:var(--text);
  transition:transform 200ms ease-out,opacity 200ms ease-out;
}
.nav-toggle span{top:21px;}
.nav-toggle span::before{left:0;top:-6px;}
.nav-toggle span::after{left:0;top:6px;}
body.nav-open .nav-toggle span{transform:rotate(45deg);}
body.nav-open .nav-toggle span::before{transform:translateY(6px) rotate(-90deg);}
body.nav-open .nav-toggle span::after{opacity:0;}

/* 移动抽屉 */
.nav-drawer{
  position:fixed;
  top:0;right:0;bottom:0;
  width:min(320px,86vw);
  padding:88px 20px 24px;
  background:rgba(8,13,26,.96);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-left:1px solid var(--line);
  transform:translateX(102%);
  transition:transform 250ms ease-out;
  z-index:200;
  overflow-y:auto;
  display:flex;flex-direction:column;gap:4px;
}
body.nav-open .nav-drawer{transform:translateX(0);}
body.nav-open{overflow:hidden;}
.nav-drawer a{
  display:flex;align-items:center;min-height:48px;
  padding:0 14px;font-size:15px;color:var(--text-2);border-radius:10px;
}
.nav-drawer a:hover{background:var(--primary-soft);color:var(--text);}
.nav-drawer a.active{color:var(--primary);background:var(--primary-soft);}
.nav-drawer .btn{margin-top:16px;min-height:48px;color:#fff;}
.nav-backdrop{
  position:fixed;inset:0;background:rgba(3,6,13,.68);
  opacity:0;visibility:hidden;transition:opacity 220ms ease-out;z-index:190;
}
body.nav-open .nav-backdrop{opacity:1;visibility:visible;}

/* ============ 按钮 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;
  border-radius:12px;
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform 200ms ease-out,box-shadow 200ms ease-out,background 200ms ease-out,color 200ms ease-out,border-color 200ms ease-out;
}
.btn-primary{
  background:linear-gradient(180deg,#3B76FF,#2F6BFF);
  color:#fff;
  box-shadow:var(--glow);
}
.btn-primary:hover{box-shadow:var(--glow-hover);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  border-color:var(--line-strong);
  background:rgba(22,34,60,.4);
  color:var(--text);
}
.btn-ghost:hover{border-color:var(--mint);color:var(--mint);transform:translateY(-1px);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn:disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;}
.link-text{
  color:var(--mint);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;
}
.link-text:hover{color:#fff;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;
  border-radius:var(--pill);
  font-size:12.5px;line-height:1;
  background:rgba(0,230,184,.14);
  color:var(--mint);
  border:1px solid rgba(0,230,184,.35);
}
.badge-primary{background:rgba(47,107,255,.18);color:#9CBBFF;border-color:rgba(47,107,255,.4);}
.badge-amber{background:rgba(255,176,32,.14);color:var(--amber);border-color:rgba(255,176,32,.35);}

/* ============ 面包屑 ============ */
.breadcrumb{
  padding:22px 0 0;
  font-size:13px;
  color:var(--text-3);
  display:flex;flex-wrap:wrap;align-items:center;gap:6px;
}
.breadcrumb a:hover{color:var(--mint);}
.breadcrumb .sep{opacity:.55;}
.breadcrumb .current{color:var(--text);}

/* ============ 窄幅 Hero ============ */
.hero-narrow{
  margin-top:22px;
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-l);
  border:1px solid var(--line);
  padding:64px 48px;
  background-image:linear-gradient(100deg,rgba(6,10,20,.9) 8%,rgba(6,10,20,.68) 55%,rgba(6,10,20,.86) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  box-shadow:var(--shadow-card);
}
.hero-narrow::after{
  content:"";
  position:absolute;inset:0;
  background:radial-gradient(circle at 82% 20%,rgba(47,107,255,.28),transparent 58%);
  pointer-events:none;
}
.hero-narrow > *{position:relative;z-index:2;}
.hero-narrow h1{
  font-size:clamp(28px,3.6vw,44px);
  margin:18px 0 16px;
  max-width:820px;
}
.hero-narrow h1 em{
  font-style:normal;
  color:var(--mint);
}
.hero-lead{
  max-width:680px;
  color:var(--text-2);
  font-size:16px;
  line-height:1.85;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.trust-row{
  display:flex;flex-wrap:wrap;gap:10px 22px;
  margin-top:30px;
  padding-top:22px;
  border-top:1px solid var(--line);
}
.trust-item{
  display:flex;align-items:center;gap:8px;
  font-size:13.5px;color:var(--text-2);
}
.trust-item svg{flex-shrink:0;color:var(--mint);}

/* ============ 板块通用 ============ */
.section{padding-top:var(--section-y);}
.section-head{max-width:820px;margin-bottom:40px;}
.section-head h2{font-size:clamp(24px,3vw,34px);margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:15.5px;}
.section-head .badge{margin-bottom:16px;}

/* ============ 时间轴 ============ */
.timeline{position:relative;max-width:920px;}
.timeline::before{
  content:"";
  position:absolute;left:21px;top:12px;bottom:28px;width:2px;
  background:linear-gradient(180deg,rgba(47,107,255,.85),rgba(0,230,184,.35),rgba(120,160,255,.08));
}
.tl-item{
  position:relative;
  display:grid;
  grid-template-columns:44px 1fr;
  gap:22px;
  padding-bottom:26px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-num{
  width:44px;height:44px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:14px;font-weight:700;
  color:#fff;
  background:linear-gradient(180deg,#3B76FF,#2F6BFF);
  box-shadow:0 0 0 5px rgba(6,10,20,.95),var(--glow);
  position:relative;z-index:2;
}
.tl-card{
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  padding:20px 24px;
  transition:border-color 200ms ease-out,transform 200ms ease-out;
}
.tl-card:hover{border-color:var(--line-strong);transform:translateY(-2px);}
.tl-card h3{font-size:19px;margin-bottom:8px;}
.tl-card p{color:var(--text-2);font-size:14.5px;line-height:1.8;}
.tl-meta{
  display:flex;flex-wrap:wrap;gap:8px;
  margin-top:14px;
}

/* ============ 图文分栏 ============ */
.split{
  display:grid;
  grid-template-columns:1.02fr .98fr;
  gap:44px;
  align-items:center;
}
.split-media{position:relative;}
.split-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--radius-m);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.split-media .badge{
  position:absolute;left:16px;bottom:16px;
  background:rgba(6,10,20,.8);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
}
.check-list{display:grid;gap:14px;margin-top:24px;}
.check-list li{
  display:grid;
  grid-template-columns:22px 1fr;
  gap:12px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.8;
}
.check-list li strong{display:block;color:var(--text);font-weight:600;font-size:15.5px;margin-bottom:2px;}
.check-list svg{color:var(--mint);margin-top:5px;}

/* ============ 注意事项卡片 ============ */
.note-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.note-card{
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
  padding:24px;
  transition:border-color 200ms ease-out,transform 200ms ease-out;
}
.note-card:hover{border-color:var(--line-strong);transform:translateY(-2px);}
.note-icon{
  width:42px;height:42px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(47,107,255,.16);
  border:1px solid rgba(47,107,255,.32);
  color:#9CBBFF;
  margin-bottom:16px;
}
.note-card.is-warn .note-icon{
  background:rgba(255,176,32,.14);
  border-color:rgba(255,176,32,.35);
  color:var(--amber);
}
.note-card.is-warn{border-color:rgba(255,176,32,.28);}
.note-card h3{font-size:19px;margin-bottom:10px;}
.note-card p{color:var(--text-2);font-size:14.5px;line-height:1.8;}

/* ============ 数据条 ============ */
.stats{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  background:linear-gradient(180deg,rgba(22,34,60,.6),rgba(11,18,32,.55));
  border:1px solid var(--line);
  border-radius:var(--radius-l);
  padding:32px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.stat{padding-left:20px;border-left:1px solid var(--line);}
.stat:first-child{border-left:0;padding-left:0;}
.stat-num{
  font-family:var(--mono);
  font-size:clamp(24px,3vw,34px);
  font-weight:700;
  color:var(--mint);
  letter-spacing:.02em;
  line-height:1.2;
}
.stat-label{font-size:15px;color:var(--text);margin-top:6px;font-weight:600;}
.stat-desc{font-size:13.5px;color:var(--text-3);margin-top:6px;line-height:1.7;}

/* ============ FAQ ============ */
.faq-list{max-width:900px;display:grid;gap:14px;}
.faq-item{
  position:relative;
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  overflow:hidden;
  transition:border-color 200ms ease-out;
}
.faq-item::before{
  content:"";
  position:absolute;left:0;top:0;bottom:0;width:2px;
  background:linear-gradient(180deg,var(--primary),var(--mint));
  transform:scaleY(0);transform-origin:top center;
  transition:transform 220ms ease-out;
}
.faq-item[open]::before{transform:scaleY(1);}
.faq-item[open]{border-color:var(--line-strong);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-arrow{
  flex-shrink:0;color:var(--text-3);
  transition:transform 220ms ease-out,color 220ms ease-out;
}
.faq-item[open] .faq-arrow{transform:rotate(180deg);color:var(--mint);}
.faq-body{
  padding:0 24px 22px;
  color:var(--text-2);
  font-size:14.5px;
  line-height:1.85;
}

/* ============ CTA 带 ============ */
.cta-band{
  background:linear-gradient(100deg,rgba(47,107,255,.28),rgba(0,230,184,.12) 70%,rgba(47,107,255,.18));
  border:1px solid var(--line-strong);
  border-radius:var(--radius-l);
  padding:34px 36px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);margin-bottom:8px;}
.cta-band p{color:var(--text-2);font-size:14.5px;max-width:640px;}

/* ============ 联系表单 ============ */
.contact-grid{
  display:grid;
  grid-template-columns:.95fr 1.05fr;
  gap:40px;
  align-items:start;
}
.contact-card{
  background:var(--glass-strong);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--radius-l);
  padding:28px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13.5px;color:var(--text-2);margin-bottom:8px;}
.field input,
.field select,
.field textarea{
  width:100%;
  height:46px;
  padding:0 14px;
  background:rgba(6,10,20,.7);
  border:1px solid var(--line);
  border-radius:var(--radius-s);
  color:var(--text);
  font-size:15px;
  transition:border-color 180ms ease-out,box-shadow 180ms ease-out;
}
.field textarea{height:112px;padding:12px 14px;resize:vertical;line-height:1.75;}
.field input::placeholder,
.field textarea::placeholder{color:var(--text-3);}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(47,107,255,.18);
}
.field.has-error input,
.field.has-error textarea{border-color:var(--danger);box-shadow:0 0 0 3px rgba(255,90,110,.14);}
.field-hint{font-size:12.5px;color:var(--danger);margin-top:6px;min-height:16px;}
.form-note{font-size:12.5px;color:var(--text-3);margin-top:14px;line-height:1.7;}
.form-status{
  display:none;
  margin-top:16px;
  padding:12px 14px;
  border-radius:var(--radius-s);
  font-size:13.5px;
  border:1px solid rgba(0,230,184,.35);
  background:rgba(0,230,184,.1);
  color:var(--mint);
}
.form-status.show{display:block;}
.contact-points{display:grid;gap:16px;margin-top:24px;}
.contact-points li{
  display:grid;grid-template-columns:22px 1fr;gap:12px;
  font-size:14.5px;color:var(--text-2);line-height:1.8;
}
.contact-points svg{color:var(--mint);margin-top:5px;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:var(--section-y);
  background:linear-gradient(180deg,rgba(11,18,32,.6),rgba(6,10,20,.95));
  border-top:1px solid var(--line);
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
  padding:56px 0 36px;
}
.footer-brand p{
  margin-top:18px;
  color:var(--text-2);
  font-size:14px;
  line-height:1.85;
  max-width:340px;
}
.footer-col h4{
  font-size:15px;
  margin-bottom:18px;
  color:var(--text);
}
.footer-col ul{display:grid;gap:10px;}
.footer-col li{font-size:14px;color:var(--text-2);line-height:1.7;}
.footer-col a{color:var(--text-2);}
.footer-col a:hover{color:var(--mint);}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding:22px 0 30px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}

/* ============ 移动粘性 CTA ============ */
.sticky-cta{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:150;
  padding:12px 16px calc(12px + env(safe-area-inset-bottom,0px));
  background:rgba(6,10,20,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-top:1px solid var(--line);
  gap:12px;
}
.sticky-cta .btn{flex:1;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--section-y:84px;}
}
@media (max-width:1023px){
  :root{--section-y:72px;}
  .nav-links{display:none;}
  .nav-cta .btn{display:none;}
  .nav-toggle{display:block;}
  .split{grid-template-columns:1fr;gap:32px;}
  .contact-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .hero-narrow{padding:52px 36px;}
}
@media (max-width:767px){
  :root{--section-y:48px;}
  .container{padding:0 18px;}
  .hero-narrow{padding:40px 22px;border-radius:var(--radius-m);}
  .hero-actions{gap:10px;}
  .hero-actions .btn{width:100%;}
  .note-grid{grid-template-columns:1fr;}
  .stats{grid-template-columns:1fr;padding:24px;gap:20px;}
  .stat{border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:16px;}
  .stat:first-child{border-top:0;padding-top:0;}
  .tl-item{grid-template-columns:38px 1fr;gap:16px;}
  .tl-num{width:38px;height:38px;font-size:13px;}
  .timeline::before{left:18px;}
  .cta-band{padding:26px 22px;flex-direction:column;align-items:flex-start;}
  .cta-band .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:44px 0 28px;}
  .sticky-cta{display:flex;}
  body{padding-bottom:76px;}
  .faq-item summary{padding:18px 18px;font-size:15px;}
  .faq-body{padding:0 18px 18px;}
  .contact-card{padding:22px;}
  .btn{height:48px;}
  .btn-sm{height:44px;}
}
@media (max-width:375px){
  .logo-main{font-size:14.5px;}
  .logo-sub{font-size:9px;letter-spacing:.1em;}
  .hero-narrow h1{font-size:25px;}
  .section-head h2{font-size:22px;}
  .trust-row{gap:8px 14px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .btn-primary{box-shadow:none;}
}

/* roulang page: category2 */
:root{
  --bg:#060A14;
  --bg-2:#0B1220;
  --glass:rgba(22,34,60,0.55);
  --glass-strong:rgba(28,42,72,0.72);
  --border:rgba(120,160,255,0.18);
  --border-bright:rgba(120,160,255,0.42);
  --primary:#2F6BFF;
  --primary-soft:rgba(47,107,255,0.16);
  --mint:#00E6B8;
  --mint-soft:rgba(0,230,184,0.14);
  --amber:#FFB020;
  --amber-soft:rgba(255,176,32,0.12);
  --danger:#FF5A6E;
  --text:#EAF0FF;
  --text-2:#A8B6D4;
  --text-3:#6C7A99;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --shadow-card:0 12px 32px rgba(0,0,0,0.45);
  --glow:0 8px 26px rgba(47,107,255,0.45);
  --glow-hover:0 10px 34px rgba(47,107,255,0.7);
  --inner-top:inset 0 1px 0 rgba(255,255,255,0.06);
  --container:1200px;
  --ease:200ms ease-out;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:
    radial-gradient(900px 520px at 50% -180px, rgba(47,107,255,0.18), rgba(47,107,255,0) 70%),
    linear-gradient(180deg,#060A14 0%,#070C18 60%,#060A14 100%);
  background-color:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(120,160,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,160,255,0.06) 1px, transparent 1px);
  background-size:24px 24px;
  opacity:0.5;
}
img{max-width:100%;display:block;border-radius:12px;}
a{color:var(--text-2);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--mint);}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:0.02em;line-height:1.35;color:var(--text);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;border-radius:4px;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;position:relative;z-index:1;}
.section{padding:96px 0;position:relative;z-index:1;}
.section--tight{padding:72px 0;}
.section--panel{background:var(--bg-2);border-top:1px solid var(--border);border-bottom:1px solid var(--border);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:12px;
  font-size:15px;font-weight:600;letter-spacing:0.01em;
  border:1px solid transparent;white-space:nowrap;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
}
.btn-sm{height:38px;padding:0 18px;font-size:14px;border-radius:10px;}
.btn-primary{
  background:linear-gradient(180deg,#3E77FF,#2F6BFF);
  color:#fff;box-shadow:var(--glow);
}
.btn-primary:hover{color:#fff;box-shadow:var(--glow-hover);transform:translateY(-1px);filter:brightness(1.08);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:rgba(255,255,255,0.02);
  border-color:var(--border-bright);
  color:var(--text);
}
.btn-ghost:hover{color:var(--mint);border-color:rgba(0,230,184,0.6);background:rgba(0,230,184,0.06);transform:translateY(-1px);}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:0.45;box-shadow:none;cursor:not-allowed;transform:none;}
.text-link{color:var(--mint);font-size:14px;font-weight:600;border-bottom:1px solid rgba(0,230,184,0.35);padding-bottom:2px;}
.text-link:hover{color:#fff;border-bottom-color:#fff;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12.5px;line-height:1;
  background:var(--mint-soft);color:var(--mint);
  border:1px solid rgba(0,230,184,0.3);
}
.badge-blue{background:var(--primary-soft);color:#9CBBFF;border-color:rgba(47,107,255,0.36);}
.badge-amber{background:var(--amber-soft);color:var(--amber);border-color:rgba(255,176,32,0.36);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,20,0.82);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid transparent;
  border-image:linear-gradient(90deg, rgba(47,107,255,0.85), rgba(47,107,255,0.05)) 1;
}
.site-header.is-scrolled{border-bottom-color:rgba(47,107,255,0.75);box-shadow:0 8px 28px rgba(0,0,0,0.5);}
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;height:70px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text);}
.logo-dot{
  width:8px;height:8px;border-radius:50%;flex:none;
  background:var(--mint);
  box-shadow:0 0 0 4px rgba(0,230,184,0.12),0 0 14px rgba(0,230,184,0.85);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-main{font-size:16px;font-weight:700;letter-spacing:0.02em;color:var(--text);}
.logo-sub{font-family:var(--font-mono);font-size:10px;letter-spacing:0.16em;color:var(--text-3);}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;border-radius:10px;
  font-size:14.5px;color:var(--text-2);
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--mint));
  transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.nav-links a:hover{color:var(--text);background:rgba(47,107,255,0.08);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{
  color:var(--primary);background:rgba(47,107,255,0.14);
  box-shadow:inset 0 0 0 1px rgba(47,107,255,0.32);
}
.nav-links a.active::after{transform:scaleX(1);box-shadow:0 0 12px rgba(47,107,255,0.85);}
.nav-cta{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--border);background:rgba(255,255,255,0.02);
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--text);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-drawer{
  position:fixed;top:0;right:0;z-index:80;width:300px;max-width:86vw;height:100%;
  background:rgba(9,14,26,0.96);
  backdrop-filter:blur(14px) saturate(140%);
  border-left:1px solid var(--border);
  padding:88px 20px 28px;
  transform:translateX(102%);
  transition:transform 260ms ease-out;
  display:flex;flex-direction:column;gap:6px;
}
.nav-drawer.is-open{transform:translateX(0);}
.nav-drawer a{
  display:flex;align-items:center;height:48px;padding:0 14px;border-radius:12px;
  font-size:15px;color:var(--text-2);
}
.nav-drawer a:hover{background:rgba(47,107,255,0.1);color:var(--text);}
.nav-drawer a.active{color:var(--primary);background:rgba(47,107,255,0.16);}
.nav-drawer .btn{margin-top:16px;}
.drawer-mask{
  position:fixed;inset:0;z-index:70;background:rgba(3,6,14,0.7);
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{padding-top:24px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--text-3);}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--mint);}
.breadcrumb .sep{color:rgba(120,160,255,0.35);}
.breadcrumb .current{color:var(--text);}

/* ---------- Hero ---------- */
.page-hero{padding:36px 0 0;}
.hero-shell{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  border:1px solid var(--border);
  box-shadow:var(--shadow-card);
  background-image:
    linear-gradient(115deg, rgba(6,10,20,0.92) 0%, rgba(6,10,20,0.72) 48%, rgba(6,10,20,0.66) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.hero-shell::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(600px 300px at 12% 0%, rgba(47,107,255,0.28), rgba(47,107,255,0) 70%);
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.12fr 0.88fr;gap:44px;
  padding:56px;align-items:center;
}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:0.14em;color:var(--mint);text-transform:uppercase;}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--mint),transparent);}
h1{font-size:clamp(30px,4.4vw,52px);margin:18px 0 16px;font-weight:700;}
.hero-lead{font-size:16px;color:var(--text-2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:30px;}
.hero-badges span{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--text-2);}
.hero-badges svg{flex:none;color:var(--mint);}
.hero-side{
  border-radius:var(--r-md);
  background:var(--glass);
  border:1px solid var(--border);
  box-shadow:var(--shadow-card),var(--inner-top);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  padding:24px;
}
.hero-side h2{font-size:18px;}
.hero-side .side-note{font-size:13px;color:var(--text-3);margin-top:6px;}
.side-list{margin-top:18px;display:grid;gap:10px;}
.side-list li{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 14px;border-radius:var(--r-sm);
  background:rgba(255,255,255,0.03);
  border:1px solid rgba(120,160,255,0.12);
  font-size:14px;color:var(--text-2);
}
.side-list li .state{font-size:12.5px;color:var(--mint);display:inline-flex;align-items:center;gap:6px;}
.side-list li .state.wait{color:var(--amber);}

/* ---------- 通用版块头 ---------- */
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{font-size:clamp(24px,3vw,34px);margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:15.5px;}
.section-head--row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;max-width:none;}

/* ---------- 安全清单 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.check-item{
  display:flex;gap:14px;align-items:flex-start;
  padding:20px 22px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--border);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--inner-top);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.check-item:hover{transform:translateY(-2px);border-color:var(--border-bright);box-shadow:var(--shadow-card),var(--inner-top);}
.check-mark{
  flex:none;width:24px;height:24px;border-radius:8px;margin-top:2px;
  display:flex;align-items:center;justify-content:center;
  background:var(--mint-soft);border:1px solid rgba(0,230,184,0.4);color:var(--mint);
}
.check-item h3{font-size:16px;margin-bottom:6px;}
.check-item p{font-size:14px;color:var(--text-2);line-height:1.7;}

/* ---------- 图文双栏 ---------- */
.split{display:grid;grid-template-columns:0.95fr 1.05fr;gap:44px;align-items:center;}
.split-media{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow-card);}
.split-media img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.split-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(6,10,20,0.05), rgba(6,10,20,0.7));
}
.split-media .floating{
  position:absolute;left:20px;bottom:20px;z-index:2;
  padding:12px 16px;border-radius:var(--r-pill);
  background:rgba(6,10,20,0.78);border:1px solid rgba(0,230,184,0.3);
  font-size:13px;color:var(--mint);
}
.split-body h2{font-size:clamp(24px,3vw,34px);margin-bottom:16px;}
.split-body p{color:var(--text-2);font-size:15.5px;}
.flow-list{margin-top:24px;display:grid;gap:14px;}
.flow-list li{display:flex;gap:14px;align-items:flex-start;}
.flow-num{
  flex:none;width:30px;height:30px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:13px;color:#9CBBFF;
  background:var(--primary-soft);border:1px solid rgba(47,107,255,0.36);
}
.flow-list strong{display:block;font-size:15px;color:var(--text);font-weight:600;}
.flow-list span{font-size:14px;color:var(--text-2);line-height:1.7;}

/* ---------- 风险提示 ---------- */
.risk-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.risk-card{
  padding:22px;border-radius:var(--r-md);
  background:linear-gradient(180deg, rgba(255,176,32,0.08), rgba(22,34,60,0.5));
  border:1px solid rgba(255,176,32,0.38);
  box-shadow:var(--inner-top);
  transition:transform var(--ease),box-shadow var(--ease);
}
.risk-card:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(255,176,32,0.14),var(--inner-top);}
.risk-card h3{font-size:16.5px;margin:14px 0 10px;}
.risk-card p{font-size:14px;color:var(--text-2);line-height:1.75;}
.risk-foot{
  margin-top:22px;padding:16px 20px;border-radius:var(--r-md);
  background:rgba(255,255,255,0.02);border:1px dashed rgba(120,160,255,0.28);
  font-size:14px;color:var(--text-2);
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;display:grid;gap:14px;}
.faq-item{
  border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--border);
  border-left:2px solid transparent;
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--inner-top);
  transition:border-color var(--ease),background var(--ease);
}
.faq-item[open]{border-left-color:var(--primary);background:var(--glass-strong);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:15.5px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-arrow{
  flex:none;width:22px;height:22px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--border-bright);color:var(--text-2);
  transition:transform 220ms ease-out,color var(--ease),border-color var(--ease);
}
.faq-item[open] .faq-arrow{transform:rotate(180deg);color:var(--mint);border-color:rgba(0,230,184,0.6);}
.faq-body{padding:0 22px 20px;font-size:14.5px;color:var(--text-2);line-height:1.8;}

/* ---------- CTA / 表单 ---------- */
.cta-shell{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  border:1px solid var(--border);
  background:linear-gradient(135deg, rgba(47,107,255,0.16), rgba(11,18,32,0.9) 55%);
  box-shadow:var(--shadow-card);
  display:grid;grid-template-columns:1fr 1fr;gap:40px;padding:48px;
}
.cta-shell::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(520px 240px at 88% 8%, rgba(0,230,184,0.14), rgba(0,230,184,0) 70%);
}
.cta-shell > *{position:relative;z-index:2;}
.cta-copy h2{font-size:clamp(24px,3vw,34px);margin-bottom:16px;}
.cta-copy p{color:var(--text-2);font-size:15.5px;}
.cta-points{margin-top:22px;display:grid;gap:10px;}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text-2);}
.cta-points li svg{flex:none;margin-top:5px;color:var(--mint);}
.form-card{
  border-radius:var(--r-md);padding:24px;
  background:var(--glass);border:1px solid var(--border);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--inner-top);
}
.form-card h3{font-size:17px;margin-bottom:6px;}
.form-card .form-tip{font-size:13px;color:var(--text-3);}
.field{margin-top:16px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;height:46px;padding:0 14px;
  border-radius:var(--r-sm);
  background:rgba(6,10,20,0.65);
  border:1px solid var(--border);
  color:var(--text);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field textarea{height:104px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(47,107,255,0.18);
}
.field.has-error input,.field.has-error textarea{border-color:var(--danger);box-shadow:0 0 0 3px rgba(255,90,110,0.14);}
.field .err{display:none;margin-top:6px;font-size:12.5px;color:var(--danger);}
.field.has-error .err{display:block;}
.form-card .btn{margin-top:20px;}
.form-status{margin-top:12px;font-size:13px;color:var(--mint);min-height:20px;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:0;padding:72px 0 28px;
  background:linear-gradient(180deg, rgba(11,18,32,0.6), rgba(6,10,20,1));
  border-top:1px solid var(--border);
  position:relative;z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px;}
.footer-brand p{margin-top:18px;font-size:14px;color:var(--text-3);line-height:1.8;max-width:340px;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text);}
.footer-col ul{display:grid;gap:10px;}
.footer-col li{font-size:14px;color:var(--text-3);}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--mint);}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(120,160,255,0.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;color:var(--text-3);
}

/* ---------- 移动端粘性条 ---------- */
.sticky-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:65;
  padding:12px 16px calc(12px + env(safe-area-inset-bottom));
  background:rgba(6,10,20,0.92);
  backdrop-filter:blur(12px);
  border-top:1px solid rgba(47,107,255,0.4);
  align-items:center;justify-content:space-between;gap:14px;
}
.sticky-cta span{font-size:13px;color:var(--text-2);}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero-grid{padding:44px;gap:34px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .section{padding:72px 0;}
  .section--tight{padding:56px 0;}
  .hero-grid{grid-template-columns:1fr;padding:40px;}
  .hero-side{max-width:640px;}
  .check-grid{grid-template-columns:1fr;}
  .split{grid-template-columns:1fr;gap:32px;}
  .risk-grid{grid-template-columns:1fr;}
  .cta-shell{grid-template-columns:1fr;padding:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .section{padding:48px 0;}
  .section--tight{padding:40px 0;}
  .hero-grid{padding:28px 22px;}
  .hero-actions .btn{flex:1 1 auto;}
  .nav-cta .btn{display:none;}
  .sticky-cta{display:flex;}
  body{padding-bottom:78px;}
  .cta-shell{padding:26px 20px;}
  .form-card{padding:20px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:520px){
  h1{font-size:clamp(26px,7vw,32px);}
  .hero-badges{gap:8px 14px;}
  .hero-side{padding:18px;}
  .check-item{padding:16px;}
  .faq-item summary{padding:16px 16px;font-size:15px;}
  .faq-body{padding:0 16px 16px;}
}
@media (max-width:375px){
  .hero-actions{gap:10px;}
  .btn{height:46px;padding:0 18px;font-size:14.5px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
  .btn-primary{box-shadow:none;}
}

/* roulang page: category3 */
:root{
  --bg:#060A14;
  --bg-2:#0B1220;
  --glass:rgba(22,34,60,0.55);
  --glass-strong:rgba(28,42,74,0.72);
  --primary:#2F6BFF;
  --primary-soft:rgba(47,107,255,0.18);
  --mint:#00E6B8;
  --mint-soft:rgba(0,230,184,0.14);
  --amber:#FFB020;
  --amber-soft:rgba(255,176,32,0.14);
  --danger:#FF5A6E;
  --danger-soft:rgba(255,90,110,0.14);
  --text:#EAF0FF;
  --text-2:#A8B6D4;
  --text-3:#6C7A99;
  --border:rgba(120,160,255,0.18);
  --border-strong:rgba(120,160,255,0.34);
  --r-s:10px;
  --r-m:16px;
  --r-l:24px;
  --r-btn:12px;
  --pill:999px;
  --shadow-card:0 12px 32px rgba(0,0,0,0.45);
  --glow:0 8px 26px rgba(47,107,255,0.45);
  --glow-h:0 10px 34px rgba(47,107,255,0.7);
  --max:1200px;
  --ease:200ms cubic-bezier(.22,.61,.36,1);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
*,*::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:1.85;
  color:var(--text);
  background:var(--bg);
  background-image:
    radial-gradient(900px 460px at 12% -8%, rgba(47,107,255,0.16), transparent 68%),
    radial-gradient(760px 420px at 92% 2%, rgba(0,230,184,0.08), transparent 70%),
    linear-gradient(rgba(120,160,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,160,255,0.06) 1px, transparent 1px);
  background-size:auto,auto,24px 24px,24px 24px;
  background-attachment:fixed,fixed,scroll,scroll;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-s);}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background var(--ease);}
a:hover{color:var(--mint);}
ul{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.02em;line-height:1.32;}
p{margin:0;}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.01em;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,20,0.82);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid rgba(120,160,255,0.14);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,#2F6BFF,rgba(47,107,255,0.12) 42%,transparent 78%);
}
.site-header.is-scrolled{box-shadow:0 10px 30px rgba(0,0,0,0.5);}
.nav{display:flex;align-items:center;gap:20px;height:70px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-dot{
  width:8px;height:8px;border-radius:50%;background:var(--primary);
  box-shadow:0 0 0 4px rgba(47,107,255,0.18),0 0 14px rgba(47,107,255,0.9);
  flex:0 0 auto;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-main{font-size:17px;font-weight:700;letter-spacing:.02em;}
.logo-sub{font-size:10px;letter-spacing:.24em;color:var(--text-3);font-family:var(--mono);}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 12px;
  font-size:14.5px;color:var(--text-2);border-radius:var(--r-s);
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--mint));
  transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.nav-links a:hover{color:var(--text);background:rgba(47,107,255,0.08);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--text);background:rgba(47,107,255,0.14);}
.nav-links a.active::after{transform:scaleX(1);}
.nav-cta{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-s);
  border:1px solid var(--border);align-items:center;justify-content:center;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--text);border-radius:2px;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
  transition:transform var(--ease),top var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg);}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:80;
  background:rgba(8,13,26,0.96);
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border-left:1px solid var(--border-strong);
  transform:translateX(102%);transition:transform 240ms ease-out;
  display:flex;flex-direction:column;padding:20px;
}
.nav-drawer.is-open{transform:translateX(0);}
.nav-drawer a{display:flex;align-items:center;min-height:48px;padding:0 8px;color:var(--text-2);border-bottom:1px solid rgba(120,160,255,0.1);font-size:15px;}
.nav-drawer a.active{color:var(--mint);}
.nav-drawer .drawer-title{font-size:12.5px;color:var(--text-3);letter-spacing:.2em;font-family:var(--mono);padding:6px 8px 14px;}
.nav-drawer .btn{margin-top:auto;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,6,14,0.66);z-index:70;opacity:0;pointer-events:none;
  transition:opacity var(--ease);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
body.nav-locked{overflow:hidden;}

/* ============ 按钮 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  border:1px solid transparent;transition:all var(--ease);
}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-primary{
  background:linear-gradient(135deg,#3C7BFF,#2F6BFF 55%,#2454d8);
  color:#fff;box-shadow:var(--glow);
}
.btn-primary:hover{color:#fff;box-shadow:var(--glow-h);transform:translateY(-1px);filter:brightness(1.08);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{border-color:var(--border-strong);color:var(--text-2);background:rgba(22,34,60,0.4);}
.btn-ghost:hover{color:var(--text);border-color:var(--primary);background:rgba(47,107,255,0.12);transform:translateY(-1px);}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;filter:none;}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--text-2);font-size:14px;}
.text-link:hover{color:var(--mint);}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:25px;padding:0 11px;border-radius:var(--pill);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
}
.badge-mint{background:var(--mint-soft);color:var(--mint);border:1px solid rgba(0,230,184,0.34);}
.badge-blue{background:var(--primary-soft);color:#8FB4FF;border:1px solid rgba(47,107,255,0.36);}
.badge-amber{background:var(--amber-soft);color:var(--amber);border:1px solid rgba(255,176,32,0.34);}
.tag-pill{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:var(--pill);
  font-size:13.5px;color:var(--text-2);border:1px solid var(--border);background:rgba(22,34,60,0.42);
  transition:all var(--ease);
}
.tag-pill:hover{color:var(--text);border-color:var(--border-strong);transform:translateY(-1px);}
.tag-pill.is-active{color:var(--text);border-color:var(--primary);background:rgba(47,107,255,0.18);box-shadow:0 0 0 1px rgba(47,107,255,0.24);}

/* ============ 面包屑 ============ */
.crumb{padding:24px 0 0;}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--text-3);}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:rgba(108,122,153,0.7);}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--mint);}
.crumb [aria-current="page"]{color:var(--text);}

/* ============ Hero ============ */
.hero-narrow{position:relative;margin-top:20px;border-radius:var(--r-l);overflow:hidden;border:1px solid var(--border);}
.hero-narrow .hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;
  transform:scale(1.02);
}
.hero-narrow .hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,20,0.68),rgba(6,10,20,0.88) 62%,rgba(6,10,20,0.96));
}
.hero-inner{position:relative;padding:56px 44px 48px;}
.hero-inner h1{font-size:clamp(30px,4.4vw,50px);letter-spacing:.02em;max-width:820px;}
.hero-inner .hero-sub{margin-top:18px;max-width:700px;color:var(--text-2);font-size:17px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.hero-facts{display:flex;flex-wrap:wrap;gap:28px;margin-top:32px;padding-top:26px;border-top:1px solid var(--border);}
.hero-facts div{min-width:130px;}
.hero-facts .num{font-family:var(--mono);font-size:24px;font-weight:700;color:var(--text);}
.hero-facts .lbl{font-size:12.5px;color:var(--text-3);}

/* ============ 板块通用 ============ */
.section{padding:96px 0 0;}
.section:last-of-type{padding-bottom:0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:30px;}
.section-head h2{font-size:clamp(24px,3vw,34px);}
.section-head p{margin-top:12px;color:var(--text-2);font-size:15px;max-width:680px;}
.section-head .head-side{flex:0 0 auto;padding-bottom:6px;}

/* ============ 检索位 ============ */
.search-panel{
  margin-top:-34px;position:relative;z-index:5;
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--border);border-radius:var(--r-m);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,0.06);
  padding:22px 24px;
}
.search-form{display:flex;gap:12px;align-items:center;}
.search-field{position:relative;flex:1 1 auto;display:flex;align-items:center;}
.search-field svg{position:absolute;left:14px;width:18px;height:18px;stroke:var(--text-3);fill:none;stroke-width:1.8;}
.search-field input{
  width:100%;height:46px;padding:0 16px 0 44px;border-radius:var(--r-btn);
  background:rgba(6,10,20,0.62);border:1px solid var(--border);color:var(--text);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.search-field input::placeholder{color:var(--text-3);}
.search-field input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,107,255,0.2);}
.search-hint{margin-top:12px;font-size:12.5px;color:var(--text-3);}
.search-hint a{color:var(--text-2);text-decoration:underline;text-decoration-color:rgba(120,160,255,0.4);}

/* ============ 标签行 ============ */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tag-row .tag-pill .dot{width:6px;height:6px;border-radius:50%;background:var(--mint);margin-right:8px;box-shadow:0 0 10px rgba(0,230,184,0.8);}

/* ============ FAQ 双列 ============ */
.faq-groups{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:34px;}
.faq-col{display:flex;flex-direction:column;gap:24px;}
.faq-block{
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--border);border-radius:var(--r-m);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,0.06);
  padding:20px;
  scroll-margin-top:96px;
}
.faq-block-head{display:flex;align-items:center;gap:10px;margin-bottom:12px;}
.faq-block-head h3{font-size:19px;}
.faq-item{border-top:1px solid rgba(120,160,255,0.12);}
.faq-item:first-of-type{border-top:0;}
.acc-head{
  width:100%;display:flex;align-items:flex-start;gap:14px;text-align:left;
  padding:16px 10px 16px 14px;position:relative;
  font-size:15.5px;font-weight:600;color:var(--text);line-height:1.6;
  border-radius:var(--r-s);transition:background var(--ease),color var(--ease);
}
.acc-head::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--mint));opacity:0;transition:opacity var(--ease);
}
.acc-head:hover{background:rgba(47,107,255,0.08);color:#fff;}
.acc-head .q-idx{font-family:var(--mono);font-size:12.5px;color:var(--text-3);padding-top:2px;flex:0 0 auto;}
.acc-head .q-text{flex:1 1 auto;}
.acc-head .chev{flex:0 0 auto;width:22px;height:22px;margin-top:2px;transition:transform var(--ease);}
.acc-head .chev svg{width:22px;height:22px;stroke:var(--text-3);fill:none;stroke-width:1.8;stroke-linecap:round;}
.faq-item.is-open .acc-head{background:rgba(47,107,255,0.1);}
.faq-item.is-open .acc-head::before{opacity:1;}
.faq-item.is-open .chev{transform:rotate(180deg);}
.faq-item.is-open .chev svg{stroke:var(--mint);}
.acc-panel{
  max-height:0;overflow:hidden;
  transition:max-height 260ms ease-out,opacity var(--ease),padding var(--ease);
  opacity:0;padding:0 10px 0 14px;
}
.faq-item.is-open .acc-panel{max-height:520px;opacity:1;padding:0 10px 18px 14px;}
.acc-panel p{color:var(--text-2);font-size:14.5px;line-height:1.8;}
.acc-panel ul{margin-top:12px;display:flex;flex-direction:column;gap:8px;}
.acc-panel li{position:relative;padding-left:16px;font-size:14px;color:var(--text-2);line-height:1.72;}
.acc-panel li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:2px;background:var(--mint);opacity:.8;}

/* ============ 仍未解决 CTA ============ */
.cta-card{
  margin-top:56px;position:relative;overflow:hidden;
  border-radius:var(--r-l);border:1px solid var(--border-strong);
  background:linear-gradient(120deg,rgba(47,107,255,0.2),rgba(0,230,184,0.08) 58%,rgba(11,18,32,0.9));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,0.06);
  padding:38px 36px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-card h2{font-size:clamp(22px,2.6vw,30px);}
.cta-card p{margin-top:12px;color:var(--text-2);font-size:15px;max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto;}
.cta-note{margin-top:16px;font-size:12.5px;color:var(--text-3);}

/* ============ 相关分类 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--border);border-radius:var(--r-m);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,0.06);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:var(--border-strong);box-shadow:0 16px 38px rgba(0,0,0,0.5),0 0 0 1px rgba(47,107,255,0.22);}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;border-radius:0;}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 300ms ease-out;}
.card:hover .card-media img{transform:scale(1.04);}
.card-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,20,0.05),rgba(6,10,20,0.72));}
.card-media .badge{position:absolute;left:14px;top:14px;z-index:2;background:rgba(6,10,20,0.7);backdrop-filter:blur(6px);}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.card-body h3{font-size:18px;}
.card-body p{color:var(--text-2);font-size:14.5px;line-height:1.72;}
.card-foot{margin-top:auto;padding-top:6px;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--text-3);}

/* ============ 表单 ============ */
.contact-wrap{display:grid;grid-template-columns:minmax(0,0.9fr) minmax(0,1.1fr);gap:32px;align-items:start;}
.contact-intro h2{font-size:clamp(24px,3vw,32px);}
.contact-intro p{margin-top:16px;color:var(--text-2);font-size:15px;}
.check-list{margin-top:24px;display:flex;flex-direction:column;gap:12px;}
.check-list li{position:relative;padding-left:30px;color:var(--text-2);font-size:14.5px;line-height:1.72;}
.check-list li::before{
  content:"";position:absolute;left:0;top:5px;width:18px;height:18px;border-radius:6px;
  background:var(--mint-soft);border:1px solid rgba(0,230,184,0.4);
}
.check-list li::after{
  content:"";position:absolute;left:6px;top:10px;width:6px;height:10px;
  border-right:2px solid var(--mint);border-bottom:2px solid var(--mint);
  transform:rotate(42deg);
}
.form-card{
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--border);border-radius:var(--r-m);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,0.06);
  padding:26px;
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13.5px;color:var(--text-2);margin-bottom:8px;font-weight:600;}
.field input,.field select,.field textarea{
  width:100%;height:46px;padding:0 14px;border-radius:var(--r-btn);
  background:rgba(6,10,20,0.62);border:1px solid var(--border);color:var(--text);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field textarea{height:auto;min-height:110px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,107,255,0.2);}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--danger);box-shadow:0 0 0 3px var(--danger-soft);}
.field .error-msg{display:none;margin-top:8px;font-size:12.5px;color:var(--danger);}
.field.has-error .error-msg{display:block;}
.form-note{margin-top:14px;font-size:12.5px;color:var(--text-3);}
.form-status{
  display:none;margin-top:16px;padding:12px 14px;border-radius:var(--r-s);
  background:var(--mint-soft);border:1px solid rgba(0,230,184,0.34);color:#9FF3DF;font-size:13.5px;
}
.form-status.is-visible{display:block;}

/* ============ 页脚 ============ */
.site-footer{margin-top:96px;background:linear-gradient(180deg,rgba(11,18,32,0.6),rgba(6,10,20,0.98));border-top:1px solid var(--border);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding:64px 0 44px;}
.footer-brand p{margin-top:18px;color:var(--text-2);font-size:14px;line-height:1.78;max-width:340px;}
.footer-col h4{font-size:15px;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li{color:var(--text-2);font-size:14px;}
.footer-col a{color:var(--text-2);}
.footer-col a:hover{color:var(--mint);}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:22px 0;border-top:1px solid var(--border);font-size:13px;color:var(--text-3);}

/* ============ 移动端粘性 CTA ============ */
.mobile-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:65;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(6,10,20,0.92);backdrop-filter:blur(12px);
  border-top:1px solid var(--border-strong);
}
.mobile-cta .btn{width:100%;height:46px;}

/* ============ 动效偏好 ============ */
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  html{scroll-behavior:auto;}
}

/* ============ 断点 ============ */
@media (max-width:1279px){
  .container{padding:0 22px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-cta .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .section{padding-top:72px;}
  .hero-inner{padding:44px 28px 38px;}
  .faq-groups{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .contact-wrap{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:48px 0 32px;}
  .site-footer{margin-top:72px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 16px;}
  .section{padding-top:48px;}
  .hero-narrow{margin-top:14px;border-radius:var(--r-m);}
  .hero-inner{padding:34px 20px 30px;}
  .hero-inner .hero-sub{font-size:15.5px;}
  .hero-facts{gap:18px;margin-top:24px;padding-top:20px;}
  .hero-facts div{min-width:104px;}
  .search-panel{margin-top:-24px;padding:18px;}
  .search-form{flex-direction:column;align-items:stretch;}
  .search-form .btn{width:100%;}
  .card-grid{grid-template-columns:1fr;}
  .cta-card{flex-direction:column;align-items:flex-start;padding:26px 22px;gap:20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .form-card{padding:20px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;padding:40px 0 24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;padding-bottom:84px;}
  .site-footer{margin-top:48px;}
  .mobile-cta{display:block;}
}
@media (max-width:375px){
  .logo-sub{display:none;}
  .hero-inner h1{font-size:26px;}
  .tag-pill{height:32px;padding:0 12px;font-size:13px;}
  .acc-head{font-size:14.5px;}
}

/* roulang page: category4 */
:root{
  --bg:#060A14;
  --bg-2:#0B1220;
  --glass:rgba(22,34,60,0.55);
  --glass-strong:rgba(28,44,78,0.72);
  --primary:#2F6BFF;
  --primary-soft:rgba(47,107,255,0.16);
  --mint:#00E6B8;
  --mint-soft:rgba(0,230,184,0.14);
  --amber:#FFB020;
  --amber-soft:rgba(255,176,32,0.14);
  --danger:#FF5A6E;
  --text:#EAF0FF;
  --text-2:#A8B6D4;
  --text-3:#6C7A99;
  --border:rgba(120,160,255,0.18);
  --border-strong:rgba(120,160,255,0.34);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --shadow-card:0 12px 32px rgba(0,0,0,0.45);
  --shadow-glow:0 8px 26px rgba(47,107,255,0.45);
  --shadow-glow-hover:0 10px 34px rgba(47,107,255,0.7);
  --space-section:96px;
  --mono:ui-monospace,"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    radial-gradient(760px 420px at 18% -8%, rgba(47,107,255,0.18), transparent 62%),
    radial-gradient(620px 380px at 92% 4%, rgba(0,230,184,0.09), transparent 60%),
    linear-gradient(rgba(120,160,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,160,255,0.06) 1px, transparent 1px);
  background-size:auto, auto, 24px 24px, 24px 24px;
  background-attachment:fixed, fixed, fixed, fixed;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;border-radius:12px;}
a{color:var(--text);text-decoration:none;transition:color .2s ease-out,border-color .2s ease-out,background-color .2s ease-out;}
a:hover{color:var(--mint);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.02em;line-height:1.35;}
p{margin:0;}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}
:focus-visible{outline:2px solid var(--mint);outline-offset:3px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--space-section) 0;position:relative;}
.section-head{margin-bottom:40px;max-width:760px;}
.section-head h2{font-size:clamp(24px,3vw,34px);margin-bottom:12px;}
.section-head p{color:var(--text-2);font-size:15px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--mint);font-family:var(--mono);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--mint);box-shadow:0 0 10px var(--mint);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,20,0.82);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid var(--border);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary),transparent);
  opacity:.7;
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-dot{
  width:9px;height:9px;border-radius:50%;
  background:var(--mint);
  box-shadow:0 0 10px var(--mint),0 0 22px rgba(0,230,184,0.55);
  flex-shrink:0;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-main{font-size:17px;font-weight:700;letter-spacing:.02em;color:var(--text);}
.logo-sub{font-family:var(--mono);font-size:9.5px;letter-spacing:.16em;color:var(--text-3);}
.logo:hover .logo-main{color:var(--mint);}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{
  position:relative;
  display:inline-flex;align-items:center;
  height:40px;padding:0 14px;
  border-radius:var(--r-sm);
  font-size:14.5px;color:var(--text-2);
  transition:color .2s ease-out,background-color .2s ease-out;
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--mint));
  border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease-out;
}
.nav-links a:hover{color:var(--text);background:rgba(120,160,255,0.08);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--primary);background:var(--primary-soft);}
.nav-links a.active::after{transform:scaleX(1);box-shadow:0 0 12px rgba(47,107,255,0.8);}
.nav-cta{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--border);background:rgba(22,34,60,0.5);
  align-items:center;justify-content:center;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--text);border-radius:2px;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
  transition:transform .2s ease-out,top .2s ease-out;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg);}
.nav-overlay{
  position:fixed;inset:0;background:rgba(3,6,14,0.6);
  backdrop-filter:blur(4px);z-index:55;opacity:0;visibility:hidden;
  transition:opacity .2s ease-out,visibility .2s ease-out;
}
.nav-overlay.open{opacity:1;visibility:visible;}

/* ============ 按钮 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:12px;
  font-size:14.5px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out,border-color .2s ease-out,color .2s ease-out;
  white-space:nowrap;
}
.btn-sm{height:38px;padding:0 16px;font-size:13.5px;}
.btn-lg{height:50px;padding:0 28px;font-size:15.5px;}
.btn-primary{
  background:linear-gradient(180deg,#3E7BFF,#2F6BFF);
  color:#fff;box-shadow:var(--shadow-glow);
}
.btn-primary:hover{color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-glow-hover);border-color:rgba(160,200,255,0.5);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:rgba(22,34,60,0.5);color:var(--text);
  border-color:var(--border-strong);
}
.btn-ghost:hover{color:var(--mint);border-color:var(--mint);background:rgba(0,230,184,0.08);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn:disabled,.btn[disabled]{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;color:var(--text-2);font-weight:600;
}
.link-more::after{content:"→";transition:transform .2s ease-out;}
.link-more:hover{color:var(--mint);}
.link-more:hover::after{transform:translateX(3px);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:25px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12.5px;letter-spacing:.02em;
  background:var(--mint-soft);color:var(--mint);
  border:1px solid rgba(0,230,184,0.34);
  white-space:nowrap;
}
.badge-primary{background:var(--primary-soft);color:#9CBDFF;border-color:rgba(47,107,255,0.4);}
.badge-amber{background:var(--amber-soft);color:var(--amber);border-color:rgba(255,176,32,0.4);}
.badge-plain{background:rgba(120,160,255,0.09);color:var(--text-2);border-color:var(--border);}

/* ============ 玻璃卡 ============ */
.glass{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--border);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-card);
  inset:0 1px 0 rgba(255,255,255,0.06);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,0.06);
  padding:24px;
}

/* ============ 面包屑 ============ */
.breadcrumb{
  padding:24px 0 0;
  font-size:13px;color:var(--text-3);
}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:rgba(108,122,153,0.6);}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--mint);}
.breadcrumb [aria-current="page"]{color:var(--text);}

/* ============ Hero ============ */
.cat-hero{
  position:relative;
  margin-top:24px;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--border);
  background-image:linear-gradient(180deg,rgba(6,10,20,0.72),rgba(6,10,20,0.88)),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  box-shadow:var(--shadow-card);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(600px 300px at 12% 0%,rgba(47,107,255,0.28),transparent 65%);
  pointer-events:none;
}
.cat-hero-inner{
  position:relative;z-index:2;
  padding:64px 48px;
  max-width:840px;
}
.cat-hero h1{
  font-size:clamp(30px,4.4vw,46px);
  margin:16px 0 18px;
}
.cat-hero h1 em{
  font-style:normal;
  background:linear-gradient(90deg,#7FA9FF,var(--mint));
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
}
.cat-hero p.lead{color:var(--text-2);font-size:16.5px;max-width:660px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-trust{
  display:flex;flex-wrap:wrap;gap:12px 22px;margin-top:34px;padding-top:26px;
  border-top:1px solid var(--border);
}
.hero-trust span{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13.5px;color:var(--text-2);
}
.hero-trust svg{width:16px;height:16px;flex-shrink:0;color:var(--mint);}

/* ============ 优惠阶梯 ============ */
.steps-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;
}
.step-card{
  position:relative;display:flex;gap:18px;
  padding:24px;border-radius:var(--r-md);
  background:var(--glass);
  border:1px solid var(--border);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,0.06);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.step-card:hover{transform:translateY(-2px);border-color:var(--border-strong);}
.step-card.tier-3{border-color:rgba(47,107,255,0.34);}
.step-card.tier-4{
  border-color:rgba(0,230,184,0.4);
  box-shadow:var(--shadow-card),0 0 0 1px rgba(0,230,184,0.14),inset 0 1px 0 rgba(255,255,255,0.08);
}
.step-num{
  font-family:var(--mono);font-size:26px;font-weight:700;
  color:var(--text-3);line-height:1;flex-shrink:0;
  padding-top:4px;
}
.step-card.tier-3 .step-num{color:#7FA9FF;}
.step-card.tier-4 .step-num{color:var(--mint);text-shadow:0 0 14px rgba(0,230,184,0.5);}
.step-body h3{font-size:19px;margin-bottom:8px;}
.step-body p{color:var(--text-2);font-size:14.5px;line-height:1.75;}
.step-cond{
  display:flex;align-items:flex-start;gap:8px;margin:14px 0 16px;
  font-size:13.5px;color:var(--text-3);
}
.step-cond::before{
  content:"";width:6px;height:6px;border-radius:2px;margin-top:8px;flex-shrink:0;
  background:var(--primary);box-shadow:0 0 8px rgba(47,107,255,0.7);
}
.step-card.tier-4 .step-cond::before{background:var(--mint);box-shadow:0 0 8px rgba(0,230,184,0.7);}

/* ============ 套餐对比 ============ */
.plan-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;align-items:stretch;
}
.plan-card{
  display:flex;flex-direction:column;
  padding:26px 24px;border-radius:var(--r-md);
  background:var(--glass);
  border:1px solid var(--border);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,0.06);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.plan-card:hover{transform:translateY(-2px);border-color:var(--border-strong);}
.plan-card.featured{
  border-color:rgba(47,107,255,0.55);
  background:var(--glass-strong);
  box-shadow:var(--shadow-card),0 0 30px rgba(47,107,255,0.28),inset 0 1px 0 rgba(255,255,255,0.08);
}
.plan-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px;}
.plan-name{font-size:19px;font-weight:700;}
.plan-desc{color:var(--text-2);font-size:14px;line-height:1.7;min-height:48px;}
.plan-price{
  display:flex;align-items:baseline;gap:8px;
  margin:18px 0 6px;padding-bottom:18px;border-bottom:1px dashed var(--border);
}
.plan-price strong{font-size:24px;font-family:var(--mono);letter-spacing:.02em;}
.plan-price span{font-size:13px;color:var(--text-3);}
.plan-features{margin:18px 0 22px;display:grid;gap:11px;flex:1;}
.plan-features li{
  display:flex;align-items:flex-start;gap:9px;
  font-size:14.2px;color:var(--text-2);line-height:1.6;
}
.plan-features li svg{width:15px;height:15px;flex-shrink:0;margin-top:5px;}
.plan-features li.yes svg{color:var(--mint);}
.plan-features li.no{color:var(--text-3);text-decoration:line-through;text-decoration-color:rgba(108,122,153,0.6);}
.plan-features li.no svg{color:var(--text-3);}
.plan-note{font-size:12.5px;color:var(--text-3);margin-top:12px;text-align:center;}

/* ============ 限时入口 ============ */
.limited{
  display:grid;grid-template-columns:1.35fr .75fr;gap:28px;align-items:center;
  padding:30px;border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(47,107,255,0.14),rgba(6,10,20,0.4) 55%);
  border:1px solid rgba(47,107,255,0.32);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,0.06);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.limited h3{font-size:22px;margin-bottom:10px;}
.limited p{color:var(--text-2);font-size:14.5px;max-width:560px;}
.countdown{display:flex;align-items:center;gap:10px;margin:20px 0 16px;}
.count-block{
  min-width:64px;padding:8px 10px;text-align:center;
  border-radius:var(--r-pill);
  background:rgba(255,176,32,0.10);
  border:1px solid rgba(255,176,32,0.32);
}
.count-block b{
  display:block;font-family:var(--mono);font-size:22px;color:var(--amber);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.count-block i{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.08em;}
.count-sep{font-family:var(--mono);color:rgba(255,176,32,0.7);font-size:20px;}
.limited-foot{font-size:12.5px;color:var(--text-3);}
.qr-panel{
  display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:22px;border-radius:var(--r-md);
  background:rgba(11,18,32,0.7);border:1px solid var(--border);
}
.qr-box{
  width:150px;height:150px;border-radius:var(--r-sm);
  background:rgba(120,160,255,0.06);
  border:1px dashed var(--border-strong);
  display:flex;align-items:center;justify-content:center;
  color:var(--text-3);font-size:12.5px;text-align:center;line-height:1.6;
  padding:10px;
}
.qr-panel .btn{width:100%;}

/* ============ 适用情况 ============ */
.scene-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center;}
.scene-figure{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--border);}
.scene-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.scene-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(6,10,20,0.8));
  pointer-events:none;
}
.scene-caption{
  position:absolute;left:22px;bottom:18px;z-index:2;
  font-size:13.5px;color:var(--text-2);
}
.scene-list{display:grid;gap:14px;margin-top:26px;}
.scene-list li{
  display:flex;align-items:flex-start;gap:12px;
  padding:16px 18px;border-radius:var(--r-sm);
  background:rgba(22,34,60,0.42);
  border:1px solid var(--border);
  transition:border-color .2s ease-out,transform .2s ease-out;
}
.scene-list li:hover{border-color:var(--border-strong);transform:translateX(2px);}
.scene-list svg{width:18px;height:18px;flex-shrink:0;margin-top:5px;color:var(--mint);}
.scene-list b{display:block;font-size:15px;margin-bottom:2px;}
.scene-list p{font-size:13.8px;color:var(--text-2);line-height:1.7;}

/* ============ 表单 ============ */
.form-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:36px;align-items:start;}
.form-aside h2{font-size:clamp(24px,3vw,32px);margin-bottom:14px;}
.form-aside p{color:var(--text-2);font-size:15px;margin-bottom:24px;}
.aside-points{display:grid;gap:14px;}
.aside-points li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:var(--text-2);}
.aside-points svg{width:18px;height:18px;flex-shrink:0;margin-top:5px;color:var(--primary);}
.form-card{
  padding:28px;border-radius:var(--r-md);
  background:var(--glass-strong);
  border:1px solid var(--border);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,0.06);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13.5px;color:var(--text-2);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;height:46px;padding:0 14px;
  background:rgba(6,10,20,0.6);
  border:1px solid var(--border);
  border-radius:var(--r-sm);
  color:var(--text);
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.field textarea{height:auto;min-height:110px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-2) 50%),linear-gradient(135deg,var(--text-2) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(47,107,255,0.18);
}
.field.error input,.field.error select,.field.error textarea{
  border-color:var(--danger);box-shadow:0 0 0 3px rgba(255,90,110,0.14);
}
.field-msg{display:none;font-size:12.5px;color:var(--danger);margin-top:6px;}
.field.error .field-msg{display:block;}
.form-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:22px;}
.form-foot small{font-size:12.5px;color:var(--text-3);max-width:280px;line-height:1.6;}
.form-success{
  display:none;margin-top:16px;padding:12px 16px;border-radius:var(--r-sm);
  background:var(--mint-soft);border:1px solid rgba(0,230,184,0.4);
  color:var(--mint);font-size:13.5px;
}
.form-success.show{display:block;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{
  border:1px solid var(--border);border-radius:var(--r-md);
  background:var(--glass);margin-bottom:14px;overflow:hidden;
  transition:border-color .2s ease-out;
}
.faq-item.open{border-color:var(--border-strong);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;text-align:left;font-size:15.5px;font-weight:600;
  position:relative;
}
.faq-item.open .faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;
  background:linear-gradient(180deg,var(--primary),var(--mint));
  box-shadow:0 0 10px rgba(47,107,255,0.7);
}
.faq-q:hover{color:var(--mint);}
.faq-arrow{
  width:22px;height:22px;flex-shrink:0;color:var(--text-3);
  transition:transform .2s ease-out,color .2s ease-out;
}
.faq-item.open .faq-arrow{transform:rotate(180deg);color:var(--mint);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .28s ease-out;
}
.faq-a p{
  padding:0 22px 20px;color:var(--text-2);font-size:14.5px;line-height:1.8;
}

/* ============ CTA 带 ============ */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  padding:26px 30px;border-radius:var(--r-lg);
  background:linear-gradient(100deg,rgba(47,107,255,0.32),rgba(0,230,184,0.14));
  border:1px solid rgba(47,107,255,0.36);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,0.08);
}
.cta-band h3{font-size:20px;margin-bottom:6px;}
.cta-band p{font-size:14px;color:rgba(234,240,255,0.78);}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:var(--space-section);
  padding:64px 0 0;
  background:linear-gradient(180deg,rgba(11,18,32,0.6),rgba(6,10,20,0.95));
  border-top:1px solid var(--border);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px;
  padding-bottom:44px;
}
.footer-brand p{color:var(--text-2);font-size:14px;margin-top:18px;max-width:340px;line-height:1.75;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text);}
.footer-col ul{display:grid;gap:11px;}
.footer-col li{font-size:13.8px;color:var(--text-3);}
.footer-col a{color:var(--text-2);font-size:13.8px;position:relative;}
.footer-col a:hover{color:var(--mint);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0;border-top:1px solid var(--border);
  font-size:12.8px;color:var(--text-3);
}

/* ============ 移动端粘性 CTA ============ */
.sticky-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(6,10,20,0.92);
  backdrop-filter:blur(12px);
  border-top:1px solid var(--border);
  gap:12px;align-items:center;justify-content:space-between;
}
.sticky-cta span{font-size:13px;color:var(--text-2);}
.sticky-cta .btn{flex-shrink:0;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .category-hero-pad{padding:0;}
}
@media (max-width:1023px){
  :root{--space-section:72px;}
  .nav-toggle{display:inline-flex;}
  .nav-links{
    position:fixed;top:0;right:0;bottom:0;z-index:60;
    width:290px;max-width:86vw;
    flex-direction:column;align-items:stretch;gap:4px;
    padding:84px 18px 96px;
    background:rgba(8,13,26,0.96);
    backdrop-filter:blur(16px) saturate(140%);
    border-left:1px solid var(--border);
    transform:translateX(102%);
    transition:transform .24s ease-out;
    overflow-y:auto;
  }
  .nav-links.open{transform:translateX(0);}
  .nav-links a{height:48px;font-size:15.5px;padding:0 14px;}
  .nav-links a::after{left:14px;right:auto;width:24px;bottom:8px;}
  .cat-hero-inner{padding:52px 34px;}
  .plan-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .plan-card.featured{order:-1;grid-column:span 2;}
  .limited{grid-template-columns:1fr;}
  .scene-grid{grid-template-columns:1fr;gap:28px;}
  .form-layout{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:767px){
  :root{--space-section:48px;}
  body{font-size:15.5px;}
  .container{padding:0 18px;}
  .nav{height:64px;}
  .nav-cta .btn{display:none;}
  .cat-hero{margin-top:18px;border-radius:var(--r-md);}
  .cat-hero-inner{padding:38px 22px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .steps-grid{grid-template-columns:1fr;}
  .plan-grid{grid-template-columns:1fr;}
  .plan-card.featured{grid-column:span 1;}
  .limited{padding:22px;}
  .count-block{min-width:56px;}
  .count-block b{font-size:19px;}
  .scene-list li:hover{transform:none;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band{padding:22px 20px;}
  .cta-band .btn{width:100%;}
  .sticky-cta{display:flex;}
  .site-footer{padding-bottom:76px;}
  .form-foot small{max-width:none;}
}
@media (max-width:375px){
  .cat-hero h1{font-size:26px;}
  .logo-main{font-size:15.5px;}
  .count-block{min-width:48px;padding:6px 8px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}