/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --bg:#060A16;
  --panel:#0B1224;
  --elev:#111A31;
  --primary:#2BD9FF;
  --primary-rgb:43,217,255;
  --secondary:#7B61FF;
  --accent:#FFB84D;
  --success:#34D399;
  --danger:#FF6B6B;
  --text:#EAF2FF;
  --muted:#A6B4CC;
  --dim:#6E7D99;
  --line:rgba(255,255,255,.12);
  --line-soft:rgba(255,255,255,.07);
  --glass:rgba(255,255,255,.055);
  --r-card:18px;
  --r-panel:24px;
  --r-pill:999px;
  --r-input:12px;
  --elev1:0 6px 18px rgba(3,8,20,.45);
  --elev2:0 18px 40px rgba(3,8,20,.55);
  --glow:0 0 0 1px rgba(43,217,255,.35),0 8px 26px rgba(43,217,255,.28);
  --font:"HarmonyOS Sans","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --bs-body-bg:var(--bg);
  --bs-body-color:var(--text);
  --bs-primary:var(--primary);
  --bs-primary-rgb:43,217,255;
  --bs-border-color:var(--line);
  --bs-border-radius:14px;
  --bs-link-color:var(--primary);
  --bs-link-hover-color:#7fe6ff;
  --bs-font-sans-serif:var(--font);
}
/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.005em;
  overflow-x:hidden;
  padding-bottom:88px;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background:
    radial-gradient(700px 420px at 10% -8%,rgba(43,217,255,.16),transparent 62%),
    radial-gradient(640px 440px at 96% 2%,rgba(123,97,255,.16),transparent 64%),
    radial-gradient(900px 620px at 50% 108%,rgba(43,217,255,.07),transparent 70%);
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease-out;}
a:hover{color:#7fe6ff;}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.3;letter-spacing:.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.tnum{font-variant-numeric:tabular-nums;}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1000;
  padding:16px 0;
  transition:padding .28s ease-out,background .28s ease-out,box-shadow .28s ease-out,border-color .28s ease-out;
  border-bottom:1px solid transparent;
}
.site-header.is-stuck{
  padding:8px 0;
  background:rgba(6,10,22,.84);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  border-bottom-color:var(--line);
  box-shadow:0 12px 34px rgba(3,8,20,.5);
}
.nav-grid{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:20px;
}
.nav-side{display:flex;align-items:center;gap:4px;}
.nav-side.right{justify-content:flex-end;}
.nav-link{
  display:inline-flex;
  align-items:center;
  padding:9px 14px;
  border-radius:var(--r-pill);
  color:var(--muted);
  font-size:15px;
  white-space:nowrap;
  transition:color .2s ease-out,background .2s ease-out,box-shadow .2s ease-out;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.06);}
.nav-link.active{
  color:#fff;
  background:rgba(43,217,255,.12);
  box-shadow:inset 0 0 0 1px rgba(43,217,255,.34);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  justify-self:center;
  color:#fff;
  font-size:19px;
  font-weight:700;
  letter-spacing:.01em;
  white-space:nowrap;
}
.brand:hover{color:#fff;}
.brand-dot{
  width:12px;height:12px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  box-shadow:0 0 14px rgba(43,217,255,.75);
  flex:none;
}
.brand-name{
  background:linear-gradient(120deg,#FFFFFF 20%,#BFEBFF 70%,#D9D0FF 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.nav-cta{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-left:8px;
  padding:10px 20px;
  border-radius:var(--r-pill);
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  color:#04121c;
  font-size:14px;
  font-weight:700;
  box-shadow:var(--glow);
  transition:transform .2s ease-out,filter .2s ease-out,box-shadow .2s ease-out;
}
.nav-cta:hover{color:#04121c;transform:translateY(-2px);filter:brightness(1.06);}
.nav-toggle{
  display:none;
  width:46px;height:46px;
  border-radius:14px;
  border:1px solid var(--line);
  background:var(--glass);
  color:var(--text);
  align-items:center;
  justify-content:center;
  justify-self:end;
  transition:background .2s ease-out,border-color .2s ease-out;
}
.nav-toggle:hover{background:rgba(255,255,255,.09);border-color:rgba(43,217,255,.4);}
.nav-toggle span{display:block;width:20px;height:2px;background:currentColor;border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:20px;height:2px;background:currentColor;border-radius:2px;
  transition:transform .24s ease-out;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.mobile-menu{
  position:fixed;
  inset:0;
  z-index:999;
  padding:100px 24px 40px;
  background:rgba(6,10,22,.97);
  -webkit-backdrop-filter:blur(20px);
  backdrop-filter:blur(20px);
  opacity:0;
  transform:translateY(-14px);
  pointer-events:none;
  overflow-y:auto;
  transition:opacity .28s ease-out,transform .28s ease-out;
}
.mobile-menu.is-open{opacity:1;transform:none;pointer-events:auto;}
.mm-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:48px;
  padding:12px 4px;
  border-bottom:1px solid var(--line-soft);
  color:var(--text);
  font-size:17px;
  font-weight:600;
}
.mm-link:hover{color:var(--primary);}
.mm-link .mm-tip{font-size:12px;color:var(--dim);font-weight:400;}
.mm-foot{margin-top:28px;display:grid;gap:14px;}
.mm-btn{
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:50px;
  border-radius:var(--r-pill);
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  color:#04121c;
  font-weight:700;
}
.mm-btn:hover{color:#04121c;}
.mm-contact{color:var(--dim);font-size:13px;text-align:center;}

/* ============ 按钮 ============ */
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.btn-glow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:14px 30px;
  border:0;
  border-radius:var(--r-pill);
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  color:#04121c;
  font-size:16px;
  font-weight:700;
  box-shadow:var(--glow);
  transition:transform .2s ease-out,filter .2s ease-out,box-shadow .2s ease-out;
}
.btn-glow:hover{color:#04121c;transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 0 0 1px rgba(43,217,255,.5),0 14px 34px rgba(43,217,255,.4);}
.btn-glass{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:13px 28px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  color:var(--text);
  font-size:16px;
  font-weight:600;
  transition:background .2s ease-out,transform .2s ease-out,border-color .2s ease-out;
}
.btn-glass:hover{color:#fff;background:rgba(255,255,255,.1);border-color:rgba(43,217,255,.4);transform:translateY(-2px);}
.btn-quiet{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:8px 4px;
  border:0;
  background:none;
  color:var(--primary);
  font-size:15px;
  font-weight:600;
  transition:color .2s ease-out;
}
.btn-quiet:hover{color:#7fe6ff;}
.btn-quiet::after{content:"›";font-size:18px;line-height:1;transition:transform .2s ease-out;}
.btn-quiet:hover::after{transform:translateX(3px);}

/* ============ 徽章 / 标签 ============ */
.badge-cat{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:var(--r-pill);
  background:rgba(6,10,22,.72);
  border:1px solid rgba(43,217,255,.32);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  color:var(--primary);
  font-size:12px;
  font-weight:600;
  line-height:1.5;
}
.chip-row{display:flex;flex-wrap:wrap;gap:12px;}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 18px;
  border-radius:14px;
  background:var(--panel);
  border:1px solid var(--line-soft);
  color:var(--muted);
  font-size:14px;
  transition:border-color .2s ease-out,color .2s ease-out,transform .2s ease-out;
}
.chip:hover{border-color:rgba(43,217,255,.35);color:var(--text);transform:translateY(-2px);}
.chip i{width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--secondary));flex:none;}

/* ============ Hero ============ */
.hero{position:relative;padding:148px 0 84px;overflow:hidden;}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:8px 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  color:var(--muted);
  font-size:13px;
}
.hero-badge i{width:7px;height:7px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary);flex:none;}
.hero-title{
  font-size:clamp(30px,4.6vw,48px);
  line-height:1.18;
  margin:22px 0 18px;
  background:linear-gradient(130deg,#FFFFFF 12%,#D3F1FF 58%,#D6CEFF 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  font-size:17px;
  color:var(--muted);
  max-width:560px;
  margin-bottom:30px;
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:34px;
  margin-top:42px;
  padding-top:26px;
  border-top:1px solid var(--line-soft);
}
.stat-num{
  font-size:27px;
  font-weight:700;
  color:#fff;
  line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.stat-label{font-size:13px;color:var(--dim);margin-top:2px;}
.hero-visual{
  position:relative;
  border-radius:var(--r-panel);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--elev2);
  background:var(--panel);
}
.hero-visual img{
  width:100%;
  height:470px;
  object-fit:cover;
}
.hero-visual::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,10,22,.06) 0%,rgba(6,10,22,.72) 100%);
  pointer-events:none;
}
.hero-float{
  position:absolute;
  left:20px;right:20px;bottom:20px;
  z-index:2;
  padding:18px 20px;
  border-radius:16px;
  background:rgba(11,18,36,.66);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
}
.hero-float h2{font-size:15px;margin-bottom:12px;color:#fff;}
.float-list{display:grid;gap:9px;}
.float-list li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--muted);}
.float-list li i{width:6px;height:6px;border-radius:50%;background:var(--primary);flex:none;}

/* ============ 板块通用 ============ */
.section{padding:96px 0;}
.section.tight{padding:76px 0;}
.section-head{max-width:760px;margin-bottom:48px;}
.sec-kicker{
  display:inline-flex;
  align-items:center;
  gap:9px;
  color:var(--primary);
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
}
.sec-kicker::before{content:"";width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--primary),var(--secondary));}
.sec-title{
  font-size:clamp(22px,3vw,34px);
  line-height:1.3;
  margin:14px 0 14px;
}
.sec-desc{color:var(--muted);font-size:16px;max-width:700px;}
.sec-head-row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
}

/* ============ 卖点 2+1 错落 ============ */
.feature-item{
  position:relative;
  height:100%;
  padding:32px 28px;
  border-radius:var(--r-panel);
  background:var(--panel);
  border:1px solid var(--line-soft);
  box-shadow:var(--elev1);
  transition:transform .24s ease-out,border-color .24s ease-out,box-shadow .24s ease-out;
}
.feature-item:hover{
  transform:translateY(-4px);
  border-color:rgba(43,217,255,.38);
  box-shadow:var(--elev2);
}
.feature-num{
  font-size:52px;
  font-weight:700;
  line-height:1;
  color:transparent;
  -webkit-text-stroke:1px rgba(43,217,255,.6);
  font-variant-numeric:tabular-nums;
}
.feature-item h3{font-size:20px;margin:16px 0 10px;}
.feature-item p{color:var(--muted);font-size:15px;line-height:1.8;}
.feature-wide{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:36px;
  align-items:center;
  padding:32px;
  border-radius:var(--r-panel);
  background:linear-gradient(140deg,rgba(43,217,255,.08),rgba(123,97,255,.08));
  border:1px solid var(--line);
}
.feature-wide img{
  width:100%;
  height:250px;
  object-fit:cover;
  border-radius:16px;
  border:1px solid var(--line);
}
.feature-wide h3{font-size:20px;margin:14px 0 10px;}
.feature-wide p{color:var(--muted);font-size:15px;line-height:1.8;}

/* ============ 场景步骤 ============ */
.steps-layout{
  display:grid;
  grid-template-columns:.85fr 1.15fr;
  gap:56px;
  align-items:start;
}
.steps-side{position:sticky;top:118px;}
.step{
  display:grid;
  grid-template-columns:56px 1fr;
  gap:20px;
  padding:26px 0;
  border-bottom:1px solid var(--line-soft);
}
.step:first-child{padding-top:0;}
.step:last-child{border-bottom:0;}
.step-num{
  width:56px;height:56px;
  border-radius:16px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
  font-weight:700;
  color:var(--primary);
  background:rgba(43,217,255,.08);
  border:1px solid rgba(43,217,255,.3);
  font-variant-numeric:tabular-nums;
}
.step-body h3{font-size:19px;margin-bottom:8px;}
.step-body p{color:var(--muted);font-size:15px;line-height:1.8;margin-bottom:16px;}
.step-body img{
  width:100%;
  height:220px;
  object-fit:cover;
  border-radius:16px;
  border:1px solid var(--line);
}

/* ============ 社会认同 ============ */
.proof-grid{
  display:grid;
  grid-template-columns:1.35fr 1fr;
  gap:24px;
  align-items:stretch;
}
.proof-card{
  padding:30px;
  border-radius:var(--r-panel);
  background:var(--panel);
  border:1px solid var(--line-soft);
  box-shadow:var(--elev1);
  display:flex;
  flex-direction:column;
  gap:18px;
  transition:transform .24s ease-out,border-color .24s ease-out,box-shadow .24s ease-out;
}
.proof-card:hover{transform:translateY(-4px);border-color:rgba(43,217,255,.35);box-shadow:var(--elev2);}
.proof-quote{font-size:16.5px;line-height:1.85;color:var(--text);}
.proof-quote::before{content:"“";display:block;font-size:44px;line-height:1;color:rgba(43,217,255,.45);margin-bottom:6px;}
.proof-meta{margin-top:auto;display:flex;align-items:center;gap:12px;padding-top:16px;border-top:1px solid var(--line-soft);}
.avatar{
  width:42px;height:42px;
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  color:#04121c;
  font-weight:700;
  font-size:15px;
  flex:none;
}
.proof-meta strong{display:block;font-size:14px;color:#fff;font-weight:600;}
.proof-meta span{font-size:12.5px;color:var(--dim);}
.logo-strip{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:34px;
}
.logo-chip{
  flex:1 1 180px;
  min-height:56px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:14px;
  border:1px dashed rgba(255,255,255,.16);
  background:rgba(255,255,255,.035);
  color:var(--dim);
  font-size:13.5px;
}

/* ============ 资讯列表 ============ */
.news-card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:var(--panel);
  border:1px solid var(--line-soft);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--elev1);
  transition:transform .24s ease-out,border-color .24s ease-out,box-shadow .24s ease-out;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(43,217,255,.38);box-shadow:var(--elev2);}
.news-cover{
  position:relative;
  display:block;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--elev);
}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease-out;}
.news-card:hover .news-cover img{transform:scale(1.06);}
.news-cover .badge-cat{position:absolute;top:12px;left:12px;}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.news-title{
  font-size:17px;
  line-height:1.55;
  font-weight:600;
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-title a{color:var(--text);}
.news-title a:hover{color:var(--primary);}
.news-desc{
  color:var(--muted);
  font-size:14px;
  line-height:1.75;
  margin-bottom:16px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-meta{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line-soft);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--dim);
}
.news-meta a{font-size:13px;font-weight:600;}
.news-empty{
  width:100%;
  min-height:280px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  padding:40px 24px;
  border-radius:var(--r-panel);
  border:1px dashed rgba(255,255,255,.16);
  background:rgba(255,255,255,.03);
  text-align:center;
}
.news-empty .empty-icon{
  width:64px;height:64px;border-radius:20px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(43,217,255,.1);
  border:1px solid rgba(43,217,255,.28);
  color:var(--primary);
  font-size:24px;
}
.news-empty p{color:var(--muted);font-size:15px;}

/* ============ FAQ ============ */
.faq-item{
  position:relative;
  margin-bottom:14px;
  border-radius:14px;
  border:1px solid var(--line-soft);
  background:var(--panel);
  overflow:hidden;
  transition:border-color .24s ease-out,background .24s ease-out;
}
.faq-item:hover{border-color:rgba(255,255,255,.18);}
.faq-item.is-open{border-color:rgba(43,217,255,.38);background:var(--elev);}
.faq-q{
  position:relative;
  width:100%;
  display:flex;
  align-items:center;
  gap:16px;
  padding:20px 22px;
  background:none;
  border:0;
  color:var(--text);
  font-size:16.5px;
  font-weight:600;
  text-align:left;
  line-height:1.6;
}
.faq-q::before{
  content:"";
  position:absolute;
  left:0;top:16px;bottom:16px;
  width:3px;
  border-radius:3px;
  background:transparent;
  transition:background .24s ease-out;
}
.faq-item.is-open .faq-q::before{background:var(--primary);}
.faq-q .q-num{
  color:var(--dim);
  font-size:14px;
  font-variant-numeric:tabular-nums;
  flex:none;
  transition:color .24s ease-out;
}
.faq-item.is-open .faq-q .q-num{color:var(--primary);}
.faq-q .q-arrow{
  margin-left:auto;
  flex:none;
  color:var(--dim);
  font-size:20px;
  line-height:1;
  transition:transform .24s ease-out,color .24s ease-out;
}
.faq-item.is-open .faq-q .q-arrow{transform:rotate(90deg);color:var(--primary);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease-out;
}
.faq-item.is-open .faq-a{max-height:520px;}
.faq-a-inner{
  padding:0 22px 22px 62px;
  color:var(--muted);
  font-size:15px;
  line-height:1.85;
}

/* ============ 中部 CTA ============ */
.cta-panel{
  position:relative;
  padding:66px 40px;
  border-radius:var(--r-panel);
  text-align:center;
  background:linear-gradient(160deg,rgba(43,217,255,.09),rgba(123,97,255,.1));
  border:1px solid var(--line);
  overflow:hidden;
}
.cta-panel::before{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(560px 280px at 50% 0,rgba(43,217,255,.22),transparent 70%);
  pointer-events:none;
}
.cta-panel h2{position:relative;font-size:clamp(22px,3vw,32px);margin-bottom:14px;}
.cta-panel p{position:relative;color:var(--muted);font-size:16px;max-width:620px;margin:0 auto 30px;}
.cta-panel .btn-row{position:relative;justify-content:center;}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line-soft);
  background:rgba(8,13,26,.72);
  padding:72px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:700;}
.footer-brand:hover{color:#fff;}
.footer-intro{color:var(--muted);font-size:14px;line-height:1.85;margin-top:16px;max-width:320px;}
.footer-title{font-size:14px;color:#fff;font-weight:700;margin-bottom:16px;letter-spacing:.02em;}
.footer-links{display:grid;gap:10px;}
.footer-links a{color:var(--muted);font-size:14px;transition:color .2s ease-out,padding-left .2s ease-out;}
.footer-links a:hover{color:var(--primary);padding-left:4px;}
.footer-contact{display:grid;gap:10px;color:var(--muted);font-size:14px;}
.footer-contact span{color:var(--dim);font-size:13px;}
.footer-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid var(--line-soft);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  color:var(--dim);
  font-size:13px;
}

/* ============ 底部固定转化条 ============ */
.convert-bar{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:1001;
  padding:10px 0 calc(10px + env(safe-area-inset-bottom));
  background:rgba(11,18,36,.8);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  border-top:1px solid var(--line);
  transform:translateY(110%);
  opacity:0;
  pointer-events:none;
  transition:transform .32s ease-out,opacity .32s ease-out;
}
.convert-bar.is-visible{transform:none;opacity:1;pointer-events:auto;}
.convert-bar.is-closed{display:none;}
.convert-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.convert-text{display:flex;align-items:center;gap:12px;min-width:0;}
.convert-text i{
  width:9px;height:9px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 12px var(--primary);
  flex:none;
}
.convert-text strong{font-size:15px;color:#fff;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.convert-actions{display:flex;align-items:center;gap:12px;flex:none;}
.convert-btn{
  display:inline-flex;
  align-items:center;
  padding:11px 24px;
  border-radius:var(--r-pill);
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  color:#04121c;
  font-size:14.5px;
  font-weight:700;
  box-shadow:var(--glow);
  transition:transform .2s ease-out,filter .2s ease-out;
}
.convert-btn:hover{color:#04121c;transform:translateY(-2px);filter:brightness(1.06);}
.convert-close{
  width:36px;height:36px;
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);
  background:transparent;
  color:var(--dim);
  font-size:16px;
  line-height:1;
  transition:color .2s ease-out,border-color .2s ease-out,background .2s ease-out;
}
.convert-close:hover{color:#fff;border-color:rgba(43,217,255,.4);background:rgba(255,255,255,.06);}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .hero-visual img{height:420px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
}
@media (max-width:991.98px){
  .nav-side{display:none;}
  .nav-toggle{display:flex;}
  .nav-grid{grid-template-columns:1fr auto;}
  .brand{justify-self:start;}
  .hero{padding:130px 0 64px;}
  .hero-visual img{height:360px;}
  .steps-layout{grid-template-columns:1fr;gap:32px;}
  .steps-side{position:static;}
  .proof-grid{grid-template-columns:1fr;}
  .feature-wide{grid-template-columns:1fr;}
  .section{padding:76px 0;}
  .section.tight{padding:60px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  body{padding-bottom:96px;}
  .wrap{padding:0 16px;}
  .hero{padding:118px 0 52px;}
  .hero-stats{gap:22px;}
  .stat-num{font-size:23px;}
  .hero-visual img{height:280px;}
  .hero-float{position:static;margin-top:-1px;border-radius:0 0 var(--r-panel) var(--r-panel);left:0;right:0;}
  .hero-visual::after{display:none;}
  .section{padding:60px 0;}
  .section-head{margin-bottom:32px;}
  .feature-wide{padding:24px;}
  .feature-num{font-size:42px;}
  .step{grid-template-columns:48px 1fr;gap:14px;}
  .step-num{width:48px;height:48px;border-radius:14px;font-size:15px;}
  .faq-a-inner{padding:0 18px 20px 18px;}
  .faq-q{padding:18px;font-size:15.5px;gap:12px;}
  .cta-panel{padding:48px 22px;}
  .convert-bar{transform:none;opacity:1;pointer-events:auto;}
  .convert-text strong{font-size:14px;}
  .convert-btn{padding:10px 18px;font-size:13.5px;}
}
@media (max-width:520px){
  .brand{font-size:16.5px;}
  .hero-title{font-size:30px;}
  .hero-sub{font-size:15.5px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .btn-glow,.btn-glass{width:100%;justify-content:center;}
  .hero-visual img{height:230px;}
  .convert-text i{display:none;}
}

/* roulang page: article */
:root{
  --bg:#060A16;
  --panel:#0B1224;
  --lift:#111A31;
  --primary:#2BD9FF;
  --primary-rgb:43,217,255;
  --violet:#7B61FF;
  --violet-rgb:123,97,255;
  --amber:#FFB84D;
  --success:#34D399;
  --warn:#FF6B6B;
  --text:#EAF2FF;
  --muted:#A6B4CC;
  --dim:#6E7D99;
  --line:rgba(255,255,255,.12);
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.09);
  --r-card:18px;
  --r-panel:24px;
  --r-pill:999px;
  --r-input:12px;
  --elev-1:0 6px 18px rgba(3,8,20,.45);
  --elev-2:0 18px 40px rgba(3,8,20,.55);
  --glow:0 0 0 1px rgba(43,217,255,.35),0 8px 26px rgba(43,217,255,.28);
  --wrap:1200px;
  --bs-body-bg:#060A16;
  --bs-body-color:#EAF2FF;
  --bs-primary-rgb:43,217,255;
  --bs-border-radius:14px;
  --bs-link-color:#2BD9FF;
  --bs-link-hover-color:#7BE6FF;
}
*{box-sizing:border-box}
html,body{max-width:100%;overflow-x:hidden}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(900px 520px at 12% -8%,rgba(43,217,255,.14),transparent 62%),
    radial-gradient(760px 460px at 92% 4%,rgba(123,97,255,.14),transparent 60%),
    linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:auto,auto,52px 52px,52px 52px;
  pointer-events:none;
  z-index:0;
}
a{color:var(--primary);text-decoration:none}
a:hover{color:#7BE6FF}
img{max-width:100%;display:block}
button{font-family:inherit}
h1,h2,h3,h4{font-weight:700;line-height:1.28;margin:0}
p{margin:0}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px;position:relative;z-index:2}
@media(max-width:640px){.wrap{padding:0 16px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  transition:background .25s ease-out,box-shadow .25s ease-out,padding .25s ease-out;
}
.site-header.scrolled{
  background:rgba(6,10,22,.78);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:0 1px 0 rgba(255,255,255,.08),var(--elev-1);
}
.nav-grid{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  min-height:78px;
}
.site-header.scrolled .nav-grid{min-height:66px}
.nav-side{list-style:none;display:flex;align-items:center;gap:6px;margin:0;padding:0}
.nav-side.left{justify-content:flex-start}
.nav-side.right{justify-content:flex-end}
.nav-link{
  display:inline-block;
  padding:9px 14px;
  border-radius:var(--r-pill);
  color:var(--muted);
  font-size:14.5px;
  transition:color .2s ease-out,background .2s ease-out;
}
.nav-link:hover,.nav-link:focus-visible{color:var(--text);background:rgba(255,255,255,.06)}
.nav-link.active{color:var(--text);background:var(--glass);box-shadow:inset 0 0 0 1px var(--line)}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  padding:9px 18px;border-radius:var(--r-pill);
  background:var(--glass);
  box-shadow:inset 0 0 0 1px var(--line);
  color:var(--text);
  font-weight:700;letter-spacing:.01em;font-size:16.5px;
  white-space:nowrap;
}
.brand:hover{color:var(--text);box-shadow:inset 0 0 0 1px rgba(43,217,255,.45),var(--elev-1)}
.brand-dot{
  width:9px;height:9px;border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--violet));
  box-shadow:0 0 12px rgba(43,217,255,.85);
  flex:0 0 auto;
}
.nav-cta{
  display:inline-block;
  padding:10px 20px;border-radius:var(--r-pill);
  font-size:14.5px;font-weight:600;color:#04121A;
  background:linear-gradient(135deg,var(--primary),var(--violet));
  box-shadow:var(--glow);
  transition:transform .2s ease-out,filter .2s ease-out,box-shadow .2s ease-out;
}
.nav-cta:hover{color:#04121A;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(43,217,255,.45),0 12px 30px rgba(43,217,255,.34)}
.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:14px;
  background:var(--glass);border:1px solid var(--line);
  position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--text);border-radius:2px;
  transform:translateX(-50%);transition:.22s ease-out;
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none}
.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)}
.mobile-menu{
  display:none;
  background:rgba(6,10,22,.96);
  backdrop-filter:blur(18px);
  border-top:1px solid var(--line);
  padding:10px 0 26px;
}
.mobile-menu.open{display:block;animation:fadeDown .24s ease-out}
@keyframes fadeDown{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
.mobile-menu ul{list-style:none;margin:0;padding:0}
.mobile-menu a{
  display:block;padding:14px 4px;min-height:48px;
  color:var(--muted);font-size:15.5px;
  border-bottom:1px solid rgba(255,255,255,.07);
}
.mobile-menu a:hover{color:var(--text)}
.mobile-menu .mm-cta{margin-top:18px;display:inline-block;border:0;text-align:center;width:100%;color:#04121A;background:linear-gradient(135deg,var(--primary),var(--violet));border-radius:var(--r-pill);padding:14px 20px;font-weight:600}
@media(max-width:991px){
  .nav-side{display:none}
  .nav-grid{grid-template-columns:1fr auto 1fr;min-height:70px}
  .nav-toggle{display:block;justify-self:end}
  .brand{justify-self:center;font-size:15px;padding:8px 14px}
}

/* ---------- breadcrumb ---------- */
.crumb-bar{padding:26px 0 0;position:relative;z-index:2}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--dim);line-height:1.7;
}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:rgba(255,255,255,.25)}
.crumb .cur{color:var(--dim);max-width:60%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- article ---------- */
.article-head{padding:22px 0 34px;position:relative;z-index:2}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
  color:#BFF2FF;background:rgba(43,217,255,.12);
  box-shadow:inset 0 0 0 1px rgba(43,217,255,.32);
}
.article-title{
  font-size:clamp(28px,4.2vw,44px);
  line-height:1.22;
  margin:16px 0 16px;
  letter-spacing:.005em;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  font-size:13.5px;color:var(--dim);
  padding-bottom:4px;
}
.article-meta i{color:rgba(43,217,255,.75);margin-right:6px}
.meta-dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.22)}
.hero-cover{
  position:relative;margin:26px 0 0;
  border-radius:var(--r-panel);overflow:hidden;
  aspect-ratio:21/9;
  box-shadow:var(--elev-2);
}
.hero-cover img{width:100%;height:100%;object-fit:cover}
.hero-cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,22,.12),rgba(6,10,22,.72));
}
@media(max-width:768px){.hero-cover{aspect-ratio:16/10}}

.layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;
  gap:48px;align-items:start;
  padding:44px 0 8px;
}
@media(max-width:991px){.layout{grid-template-columns:1fr;gap:36px}}

.article-body{
  max-width:820px;
  font-size:16px;line-height:1.9;color:#DCE6F7;
}
.article-body p{margin:0 0 1.25em}
.article-body h2{
  font-size:clamp(21px,2.6vw,28px);
  margin:2.6em 0 .85em;
  padding-top:.2em;
  position:relative;
  color:#F2F7FF;
}
.article-body h2::before{
  content:"";display:block;width:56px;height:3px;border-radius:3px;
  background:linear-gradient(90deg,var(--primary),var(--violet));
  margin-bottom:14px;
  box-shadow:0 0 16px rgba(43,217,255,.55);
}
.article-body h3{font-size:19px;margin:2em 0 .7em;color:#EDF4FF}
.article-body h4{font-size:17px;margin:1.6em 0 .6em;color:#E3ECFB}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(43,217,255,.45);transition:.2s ease-out}
.article-body a:hover{color:#8AE9FF;border-bottom-color:#8AE9FF;background:rgba(43,217,255,.08)}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:0;list-style:none}
.article-body ul li,.article-body ol li{position:relative;padding-left:26px;margin-bottom:.6em}
.article-body ul li::before{
  content:"";position:absolute;left:6px;top:.72em;
  width:7px;height:7px;border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--violet));
  box-shadow:0 0 10px rgba(43,217,255,.6);
}
.article-body ol{counter-reset:olc}
.article-body ol li{counter-increment:olc}
.article-body ol li::before{
  content:counter(olc,decimal-leading-zero);
  position:absolute;left:0;top:.1em;
  font-size:12px;font-weight:700;color:var(--primary);
  font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;
  background:var(--glass);
  border-left:3px solid var(--primary);
  border-radius:0 var(--r-card) var(--r-card) 0;
  color:#CFDCF2;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.08);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:16px;margin:1.5em 0;width:100%;box-shadow:var(--elev-1)}
.article-body figure{margin:1.6em 0}
.article-body figcaption{
  text-align:center;font-size:13px;color:var(--dim);margin-top:10px;
}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:14.5px;
  border-radius:14px;overflow:hidden;
}
.article-body .table-scroll{overflow-x:auto;margin:1.6em 0;border-radius:14px;box-shadow:inset 0 0 0 1px var(--line)}
.article-body th,.article-body td{padding:12px 16px;text-align:left;border-bottom:1px solid rgba(255,255,255,.08)}
.article-body thead th{background:rgba(43,217,255,.1);color:#D9F4FF;font-weight:600}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.03)}
.article-body code{
  background:rgba(123,97,255,.16);color:#D6CCFF;
  padding:2px 7px;border-radius:6px;font-size:14px;
}
.article-body hr{border:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.18),transparent);margin:2.4em 0}

.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:40px 0 0;padding-top:26px;border-top:1px solid rgba(255,255,255,.08)}
.tag{
  display:inline-block;padding:7px 15px;border-radius:var(--r-pill);
  font-size:13px;color:var(--muted);background:var(--glass);
  box-shadow:inset 0 0 0 1px var(--line);
  transition:.2s ease-out;
}
.tag:hover{color:var(--text);box-shadow:inset 0 0 0 1px rgba(43,217,255,.45);transform:translateY(-2px)}

.article-foot-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

/* sidebar */
.side-card{
  background:var(--glass);
  border-radius:var(--r-card);
  box-shadow:inset 0 0 0 1px var(--line),var(--elev-1);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  padding:22px;
  margin-bottom:22px;
}
.side-card h3{font-size:15.5px;margin:0 0 14px;color:#EDF4FF;display:flex;align-items:center;gap:8px}
.side-card h3 i{color:var(--primary)}
.side-list{list-style:none;margin:0;padding:0}
.side-list li{padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.09);font-size:14px}
.side-list li:last-child{border-bottom:0;padding-bottom:0}
.side-list a{color:var(--muted)}
.side-list a:hover{color:var(--primary)}
.side-note{font-size:13.5px;color:var(--dim);line-height:1.85}
.side-kv{display:flex;justify-content:space-between;gap:12px;font-size:13.5px;color:var(--muted);padding:9px 0;border-bottom:1px dashed rgba(255,255,255,.09)}
.side-kv:last-child{border-bottom:0}
.side-kv strong{color:var(--text);font-weight:600}

/* related */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(20px,2.6vw,27px)}
.sec-head p{color:var(--dim);font-size:14px;margin-top:8px}
.text-link{font-size:14px;color:var(--primary);display:inline-flex;align-items:center;gap:6px}
.text-link:hover{gap:10px}
.related{padding:56px 0 72px;border-top:1px solid rgba(255,255,255,.07);margin-top:56px}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media(max-width:991px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.card-grid{grid-template-columns:1fr}}
.post-card{
  display:flex;flex-direction:column;
  background:var(--glass);
  border-radius:var(--r-card);
  box-shadow:inset 0 0 0 1px var(--line),var(--elev-1);
  overflow:hidden;
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.post-card:hover{transform:translateY(-4px);box-shadow:inset 0 0 0 1px rgba(43,217,255,.38),var(--elev-2)}
.thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--lift)}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease-out}
.post-card:hover .thumb img{transform:scale(1.05)}
.thumb .badge-cat{
  position:absolute;left:12px;top:12px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;color:#BFF2FF;
  background:rgba(6,10,22,.68);
  box-shadow:inset 0 0 0 1px rgba(43,217,255,.4);
  backdrop-filter:blur(10px);
}
.post-card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-card-body h3{font-size:16.5px;line-height:1.55;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card-body h3 a{color:var(--text)}
.post-card-body h3 a:hover{color:var(--primary)}
.post-card-body p{font-size:13.5px;color:var(--dim);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:12px;font-size:12.5px;color:var(--dim);border-top:1px dashed rgba(255,255,255,.09)}
.post-meta a{color:var(--primary);font-size:13px}

/* empty */
.empty-box{
  text-align:center;padding:46px 24px;border-radius:var(--r-card);
  background:var(--glass);box-shadow:inset 0 0 0 1px var(--line);
}
.empty-box .ico{
  width:64px;height:64px;border-radius:20px;margin:0 auto 18px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(43,217,255,.1);box-shadow:inset 0 0 0 1px rgba(43,217,255,.3);
  font-size:24px;color:var(--primary);
}
.empty-box p{color:var(--dim);font-size:14.5px;margin-bottom:20px}

/* buttons */
.btn-main,.btn-ghost,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;cursor:pointer;border:0;
  transition:transform .2s ease-out,filter .2s ease-out,box-shadow .2s ease-out,background .2s ease-out;
}
.btn-main{color:#04121A;background:linear-gradient(135deg,var(--primary),var(--violet));box-shadow:var(--glow)}
.btn-main:hover{color:#04121A;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(43,217,255,.45),0 14px 34px rgba(43,217,255,.34)}
.btn-ghost{color:var(--text);background:var(--glass);box-shadow:inset 0 0 0 1px var(--line)}
.btn-ghost:hover{color:var(--text);background:rgba(255,255,255,.1);transform:translateY(-2px)}
.btn-line{color:var(--primary);background:transparent;padding:11px 22px;box-shadow:inset 0 0 0 1px rgba(43,217,255,.4)}
.btn-line:hover{color:#04121A;background:linear-gradient(135deg,var(--primary),var(--violet));box-shadow:var(--glow)}
a:focus-visible,button:focus-visible,.tag:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

/* footer */
.site-footer{
  position:relative;z-index:2;margin-top:20px;
  background:linear-gradient(180deg,rgba(11,18,36,.6),rgba(6,10,22,.95));
  border-top:1px solid rgba(255,255,255,.08);
  padding:64px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:38px}
@media(max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:30px}}
@media(max-width:576px){.footer-grid{grid-template-columns:1fr}}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);font-weight:700;font-size:16.5px;letter-spacing:.01em;margin-bottom:14px}
.footer-brand:hover{color:var(--primary)}
.footer-intro{font-size:13.5px;color:var(--dim);line-height:1.9;max-width:330px}
.footer-title{font-size:14.5px;color:#E7EFFF;margin-bottom:16px;letter-spacing:.02em}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links li{margin-bottom:11px}
.footer-links a{font-size:13.5px;color:var(--dim)}
.footer-links a:hover{color:var(--primary)}
.footer-contact{font-size:13.5px;color:var(--dim);line-height:2}
.footer-contact span{color:var(--dim)}
.footer-bottom{
  margin-top:44px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12.5px;color:var(--dim);
}

/* roulang page: category1 */
:root{
  --bg:#060A16;
  --panel:#0B1224;
  --raise:#111A31;
  --primary:#2BD9FF;
  --primary-rgb:43,217,255;
  --secondary:#7B61FF;
  --secondary-rgb:123,97,255;
  --accent:#FFB84D;
  --success:#34D399;
  --warn:#FF6B6B;
  --text:#EAF2FF;
  --text-2:#A6B4CC;
  --text-3:#6E7D99;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.085);
  --glass-border:rgba(255,255,255,.12);
  --hairline:rgba(255,255,255,.08);
  --radius-sm:12px;
  --radius-card:18px;
  --radius-lg:24px;
  --radius-pill:999px;
  --elev-1:0 6px 18px rgba(3,8,20,.45);
  --elev-2:0 18px 40px rgba(3,8,20,.55);
  --glow:0 0 0 1px rgba(43,217,255,.35),0 8px 26px rgba(43,217,255,.28);
  --ease:200ms ease-out;
  --wrap:1200px;

  --bs-body-bg:#060A16;
  --bs-body-color:#EAF2FF;
  --bs-primary-rgb:43,217,255;
  --bs-border-radius:18px;
  --bs-border-radius-lg:24px;
  --bs-border-radius-sm:12px;
  --bs-link-color:#2BD9FF;
  --bs-link-hover-color:#7B61FF;
  --bs-font-sans-serif:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  padding-bottom:96px;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    radial-gradient(620px 420px at 10% -6%, rgba(var(--primary-rgb),.16), transparent 66%),
    radial-gradient(760px 520px at 90% 4%, rgba(var(--secondary-rgb),.16), transparent 70%),
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size:auto,auto,48px 48px,48px 48px;
}
.site-header,.site-main,.site-footer{position:relative;z-index:1;}

img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color var(--ease),opacity var(--ease);}
a:hover{color:#7FE7FF;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;letter-spacing:.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  border-bottom:1px solid transparent;
  transition:background var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.site-header.scrolled{
  background:rgba(6,10,22,.78);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom-color:var(--glass-border);
  box-shadow:var(--elev-1);
}
.nav-grid{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:20px;
  height:76px;
  transition:height var(--ease);
}
.site-header.scrolled .nav-grid{height:64px;}
.nav-side{display:flex;align-items:center;gap:4px;}
.nav-side.left{justify-content:flex-start;}
.nav-side.right{justify-content:flex-end;}
.nav-link{
  display:inline-block;
  padding:9px 15px;
  font-size:15px;
  color:var(--text-2);
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  transition:color var(--ease),background var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.06);}
.nav-link.active{
  color:var(--primary);
  background:rgba(var(--primary-rgb),.10);
  border-color:rgba(var(--primary-rgb),.30);
}
.nav-cta{
  display:inline-block;
  margin-left:8px;
  padding:10px 20px;
  font-size:14.5px;
  font-weight:600;
  color:#04121C;
  border-radius:var(--radius-pill);
  background:linear-gradient(135deg,#2BD9FF 0%,#7B61FF 100%);
  box-shadow:var(--glow);
  transition:transform var(--ease),box-shadow var(--ease),filter var(--ease);
  white-space:nowrap;
}
.nav-cta:hover{color:#04121C;transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 0 0 1px rgba(43,217,255,.5),0 12px 32px rgba(43,217,255,.35);}
.brand{
  grid-column:2;
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text);
  font-weight:700;
  letter-spacing:.01em;
  font-size:17px;
  white-space:nowrap;
}
.brand:hover{color:var(--text);}
.brand-dot{
  width:10px;height:10px;border-radius:50%;
  background:linear-gradient(135deg,#2BD9FF,#7B61FF);
  box-shadow:0 0 0 3px rgba(var(--primary-rgb),.14),0 0 14px rgba(var(--primary-rgb),.6);
  flex:none;
}
.nav-toggle{
  grid-column:3;
  justify-self:end;
  display:none;
  width:44px;height:44px;
  border-radius:14px;
  background:var(--glass);
  border:1px solid var(--glass-border);
  backdrop-filter:blur(18px);
  position:relative;
  cursor:pointer;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:50%;
  width:18px;height:2px;
  background:var(--text);
  border-radius:2px;
  transform:translateX(-50%);
  transition:transform var(--ease),opacity var(--ease);
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg);}

.mobile-menu{
  position:fixed;
  top:0;left:0;right:0;
  z-index:55;
  padding:96px 20px 36px;
  background:rgba(6,10,22,.97);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid var(--glass-border);
  opacity:0;
  visibility:hidden;
  transform:translateY(-14px);
  transition:opacity .28s ease-out,transform .28s ease-out,visibility .28s;
  max-height:100vh;
  overflow-y:auto;
}
.mobile-menu.open{opacity:1;visibility:visible;transform:none;}
.mm-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:52px;
  padding:0 6px;
  font-size:16px;
  color:var(--text-2);
  border-bottom:1px solid var(--hairline);
}
.mm-link.active{color:var(--primary);}
.mm-link i{font-size:12px;color:var(--text-3);}
.mm-cta{
  display:block;
  margin-top:24px;
  padding:14px 20px;
  text-align:center;
  font-weight:600;
  color:#04121C;
  border-radius:var(--radius-pill);
  background:linear-gradient(135deg,#2BD9FF 0%,#7B61FF 100%);
  box-shadow:var(--glow);
}
.mm-contact{margin-top:22px;font-size:13.5px;color:var(--text-3);line-height:2;}

/* ---------- Buttons ---------- */
.btn-glow,.btn-ghost,.btn-soft{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:13px 26px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--radius-pill);
  cursor:pointer;
  border:1px solid transparent;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),filter var(--ease);
  white-space:nowrap;
}
.btn-glow{
  color:#04121C;
  background:linear-gradient(135deg,#2BD9FF 0%,#7B61FF 100%);
  box-shadow:var(--glow);
}
.btn-glow:hover{color:#04121C;transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 0 0 1px rgba(43,217,255,.5),0 12px 34px rgba(43,217,255,.36);}
.btn-ghost{
  color:var(--text);
  background:var(--glass);
  border-color:var(--glass-border);
  backdrop-filter:blur(18px);
}
.btn-ghost:hover{color:var(--text);background:rgba(255,255,255,.10);transform:translateY(-2px);}
.btn-soft{
  padding:10px 18px;
  font-size:14px;
  color:var(--primary);
  background:rgba(var(--primary-rgb),.08);
  border-color:rgba(var(--primary-rgb),.28);
}
.btn-soft:hover{color:#04121C;background:linear-gradient(135deg,#2BD9FF,#7B61FF);border-color:transparent;}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:52px 0 64px;
  border-bottom:1px solid var(--hairline);
}
.hero-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
  opacity:.30;
  filter:saturate(.85);
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,10,22,.55) 0%,rgba(6,10,22,.90) 62%,var(--bg) 100%);
}
.hero-inner{position:relative;z-index:2;max-width:860px;}
.crumbs{margin-bottom:22px;}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
.crumbs li{display:flex;align-items:center;gap:8px;}
.crumbs li+li::before{content:"›";color:var(--text-3);}
.crumbs a{color:var(--text-3);}
.crumbs a:hover{color:var(--primary);}
.crumbs [aria-current="page"]{color:var(--text-3);}
.page-hero h1{
  font-size:clamp(28px,4.4vw,44px);
  line-height:1.22;
  margin-bottom:18px;
}
.hero-lead{
  max-width:640px;
  font-size:17px;
  line-height:1.85;
  color:var(--text-2);
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 14px;
  font-size:12.5px;
  color:var(--text-2);
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-pill);
  backdrop-filter:blur(18px);
}
.tag i{color:var(--primary);font-size:11px;}
.tag.amber{color:var(--accent);border-color:rgba(255,184,77,.32);background:rgba(255,184,77,.08);}
.tag.amber i{color:var(--accent);}

/* ---------- Sections ---------- */
.section{padding:84px 0;}
.section.tight{padding:64px 0;}
.sec-head{max-width:720px;margin-bottom:52px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--primary);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:linear-gradient(90deg,transparent,var(--primary));}
.sec-head h2{font-size:clamp(22px,3vw,34px);line-height:1.3;margin-bottom:16px;}
.sec-head p{color:var(--text-2);font-size:15.5px;}

/* ---------- Swap blocks ---------- */
.swap{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
  padding:36px 0;
}
.swap+.swap{border-top:1px solid var(--hairline);}
.swap.reverse .swap-media{order:2;}
.swap-media{position:relative;}
.swap-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--radius-lg);
  border:1px solid var(--glass-border);
  box-shadow:var(--elev-2);
}
.swap-media::after{
  content:"";
  position:absolute;
  inset:0;
  border-radius:var(--radius-lg);
  background:linear-gradient(180deg,rgba(6,10,22,0) 45%,rgba(6,10,22,.55) 100%);
  pointer-events:none;
}
.swap-index{
  position:absolute;
  left:18px;
  bottom:18px;
  z-index:2;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 15px;
  font-size:12.5px;
  font-weight:600;
  color:var(--text);
  background:rgba(11,18,36,.72);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-pill);
  backdrop-filter:blur(18px);
}
.swap-index b{color:var(--primary);font-variant-numeric:tabular-nums;}
.swap-body h3{font-size:clamp(19px,2.2vw,23px);line-height:1.4;margin-bottom:14px;}
.swap-body p{color:var(--text-2);font-size:15.5px;margin-bottom:18px;}
.check-list li{
  position:relative;
  padding-left:26px;
  margin-bottom:10px;
  font-size:15px;
  color:var(--text-2);
}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:9px;height:9px;
  border-radius:50%;
  background:linear-gradient(135deg,#2BD9FF,#7B61FF);
  box-shadow:0 0 10px rgba(var(--primary-rgb),.55);
}
.swap-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:16px;
  font-size:14.5px;
  font-weight:600;
  color:var(--primary);
  border-bottom:1px solid rgba(var(--primary-rgb),.35);
  padding-bottom:2px;
}
.swap-link:hover{border-bottom-color:var(--primary);}

/* ---------- Points ---------- */
.point-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
}
.point{
  display:flex;
  gap:16px;
  padding:22px 24px;
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-card);
  backdrop-filter:blur(18px);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.point:hover{transform:translateY(-4px);border-color:rgba(var(--primary-rgb),.32);box-shadow:var(--elev-2);}
.point-icon{
  flex:none;
  width:42px;height:42px;
  display:grid;
  place-items:center;
  border-radius:14px;
  font-size:16px;
  color:var(--primary);
  background:rgba(var(--primary-rgb),.10);
  border:1px solid rgba(var(--primary-rgb),.26);
}
.point h4{font-size:16px;margin-bottom:6px;}
.point p{font-size:14.5px;color:var(--text-2);line-height:1.8;}

/* ---------- Stats ---------- */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
  padding:32px;
  border-radius:var(--radius-lg);
  background:linear-gradient(135deg,rgba(43,217,255,.08),rgba(123,97,255,.10));
  border:1px solid var(--glass-border);
  backdrop-filter:blur(18px);
}
.stat-num{
  font-size:clamp(24px,3vw,34px);
  font-weight:700;
  line-height:1.2;
  color:var(--text);
  font-variant-numeric:tabular-nums;
}
.stat-num span{font-size:15px;color:var(--primary);margin-left:4px;font-weight:600;}
.stat-label{margin-top:6px;font-size:13.5px;color:var(--text-2);}

/* ---------- FAQ ---------- */
.faq-acc .accordion-item{
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-card);
  margin-bottom:14px;
  overflow:hidden;
  backdrop-filter:blur(18px);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-acc .accordion-item:hover{border-color:rgba(var(--primary-rgb),.28);}
.faq-acc .accordion-button{
  display:flex;
  align-items:center;
  gap:14px;
  width:100%;
  padding:20px 22px;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  background:transparent;
  box-shadow:none;
  border-left:3px solid transparent;
  transition:background var(--ease),border-color var(--ease),color var(--ease);
}
.faq-acc .accordion-button:not(.collapsed){
  background:rgba(var(--primary-rgb),.06);
  border-left-color:var(--primary);
  color:var(--text);
  box-shadow:none;
}
.faq-acc .accordion-button::after{
  background-image:none;
  content:"\f078";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:12px;
  color:var(--text-3);
  width:auto;height:auto;
  transition:transform var(--ease),color var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{color:var(--primary);transform:rotate(180deg);}
.faq-acc .accordion-button:focus{box-shadow:0 0 0 2px rgba(var(--primary-rgb),.35);z-index:3;}
.q-idx{
  flex:none;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--primary);
  font-variant-numeric:tabular-nums;
}
.faq-acc .accordion-body{
  padding:0 22px 22px 60px;
  color:var(--text-2);
  font-size:15px;
  line-height:1.85;
}

/* ---------- CTA ---------- */
.cta-block{
  position:relative;
  overflow:hidden;
  text-align:center;
  padding:88px 24px;
  border-radius:var(--radius-lg);
  border:1px solid var(--glass-border);
  background:
    radial-gradient(520px 260px at 50% 0%,rgba(var(--primary-rgb),.16),transparent 70%),
    radial-gradient(420px 240px at 80% 100%,rgba(var(--secondary-rgb),.14),transparent 72%),
    rgba(255,255,255,.03);
  backdrop-filter:blur(18px);
}
.cta-block h2{font-size:clamp(22px,3vw,32px);margin-bottom:16px;}
.cta-block p{max-width:600px;margin:0 auto 28px;color:var(--text-2);font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:80px;
  padding:64px 0 0;
  border-top:1px solid var(--hairline);
  background:linear-gradient(180deg,rgba(11,18,36,.4),rgba(6,10,22,.9));
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  color:var(--text);
  margin-bottom:16px;
}
.footer-brand:hover{color:var(--text);}
.footer-intro{font-size:14px;color:var(--text-2);line-height:1.9;max-width:300px;}
.footer-title{font-size:14.5px;margin-bottom:16px;color:var(--text);}
.footer-links li{margin-bottom:11px;}
.footer-links a{font-size:14px;color:var(--text-2);}
.footer-links a:hover{color:var(--primary);}
.footer-contact{font-size:14px;color:var(--text-2);line-height:2.1;}
.footer-contact span{color:var(--text-3);font-size:13.5px;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:22px 0;
  border-top:1px solid var(--hairline);
  font-size:13px;
  color:var(--text-3);
}

/* ---------- Sticky CTA ---------- */
.sticky-cta{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:70;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:18px;
  padding:12px 20px calc(12px + env(safe-area-inset-bottom));
  background:rgba(11,18,36,.74);
  border-top:1px solid var(--glass-border);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  transform:translateY(115%);
  transition:transform .35s ease-out;
}
.sticky-cta.show{transform:translateY(0);}
.sticky-cta.is-closed{display:none;}
.sticky-cta p{font-size:14.5px;color:var(--text-2);margin:0;}
.sticky-cta .btn-glow{padding:10px 22px;font-size:14px;}
.sticky-close{
  width:34px;height:34px;
  border-radius:50%;
  background:rgba(255,255,255,.07);
  border:1px solid var(--glass-border);
  color:var(--text-2);
  font-size:14px;
  cursor:pointer;
  display:grid;
  place-items:center;
  transition:background var(--ease),color var(--ease);
}
.sticky-close:hover{background:rgba(255,255,255,.14);color:var(--text);}

/* ---------- Responsive ---------- */
@media (max-width:1199.98px){
  .section{padding:76px 0;}
  .swap{gap:40px;}
}
@media (max-width:991.98px){
  .nav-side{display:none;}
  .nav-toggle{display:block;}
  .brand{grid-column:2;justify-self:center;font-size:16px;}
  .nav-toggle{grid-column:3;}
  .nav-grid{grid-template-columns:1fr auto 1fr;gap:10px;}
  .swap{grid-template-columns:1fr;gap:26px;}
  .swap.reverse .swap-media{order:0;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .point-grid{grid-template-columns:1fr;}
  .faq-acc .accordion-body{padding-left:22px;}
}
@media (max-width:767.98px){
  body{padding-bottom:104px;}
  .wrap{padding:0 16px;}
  .section{padding:56px 0;}
  .section.tight{padding:48px 0;}
  .sec-head{margin-bottom:34px;}
  .page-hero{padding:36px 0 48px;}
  .hero-lead{font-size:15.5px;}
  .hero-actions{gap:10px;}
  .btn-glow,.btn-ghost{padding:12px 22px;font-size:14.5px;}
  .stat-strip{padding:24px;gap:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-block{padding:60px 20px;}
  .sticky-cta{transform:translateY(0);gap:12px;justify-content:space-between;}
  .sticky-cta p{font-size:13.5px;}
}
@media (max-width:520px){
  .brand-name{font-size:15px;letter-spacing:0;}
  .hero-actions .btn-glow,.hero-actions .btn-ghost{width:100%;justify-content:center;}
  .cta-actions .btn-glow,.cta-actions .btn-ghost{width:100%;justify-content:center;}
  .stat-strip{grid-template-columns:1fr 1fr;padding:20px;}
  .sticky-cta p{display:none;}
  .sticky-cta{justify-content:center;}
}

/* roulang page: category2 */
:root{
  --bg:#060A16;
  --panel:#0B1224;
  --raise:#111A31;
  --primary:#2BD9FF;
  --primary-rgb:43,217,255;
  --second:#7B61FF;
  --second-rgb:123,97,255;
  --amber:#FFB84D;
  --success:#34D399;
  --warn:#FF6B6B;
  --text:#EAF2FF;
  --text-sub:#A6B4CC;
  --text-mute:#6E7D99;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --glass:rgba(255,255,255,.055);
  --glass-hover:rgba(255,255,255,.085);
  --radius-card:18px;
  --radius-panel:24px;
  --radius-pill:999px;
  --radius-input:12px;
  --elev-1:0 6px 18px rgba(3,8,20,.45);
  --elev-2:0 18px 40px rgba(3,8,20,.55);
  --glow:0 0 0 1px rgba(43,217,255,.35), 0 8px 26px rgba(43,217,255,.28);
  --ease:200ms ease-out;
  --bs-body-bg:#060A16;
  --bs-body-color:#EAF2FF;
  --bs-border-color:rgba(255,255,255,.10);
  --bs-primary-rgb:43,217,255;
  --bs-border-radius:18px;
}

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

html{scroll-behavior:smooth;}

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:15.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  padding-bottom:0;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(720px 460px at 12% -6%, rgba(43,217,255,.16), transparent 70%),
    radial-gradient(640px 420px at 92% 4%, rgba(123,97,255,.16), transparent 72%),
    radial-gradient(900px 600px at 50% 108%, rgba(43,217,255,.08), transparent 70%);
}

body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 20%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 20%,#000 0%,transparent 78%);
}

img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color var(--ease);}
a:hover{color:#7fe6ff;}
p{margin:0 0 1em;}
h1,h2,h3,h4{margin:0 0 .6em;line-height:1.24;font-weight:700;letter-spacing:.01em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

.wrap{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:2;
}

/* ============ 按钮 ============ */
.btn-glow,
.btn-glass,
.btn-ghost{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 26px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
  white-space:nowrap;
}

.btn-glow{
  background:linear-gradient(135deg,var(--primary) 0%,var(--second) 100%);
  color:#04101f;
  box-shadow:var(--glow);
}
.btn-glow:hover{color:#04101f;filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(43,217,255,.5),0 14px 32px rgba(43,217,255,.34);}

.btn-glass{
  background:var(--glass);
  border-color:var(--line-strong);
  color:var(--text);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
}
.btn-glass:hover{background:var(--glass-hover);color:var(--text);transform:translateY(-2px);border-color:rgba(43,217,255,.45);}

.btn-ghost{
  background:transparent;
  border-color:transparent;
  color:var(--primary);
  padding:8px 4px;
  font-weight:600;
}
.btn-ghost:hover{color:#7fe6ff;transform:translateX(3px);}

/* ============ 导航 ============ */
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:120;
  transition:background var(--ease),box-shadow var(--ease),border-color var(--ease),padding var(--ease);
  border-bottom:1px solid transparent;
  padding:14px 0;
}
.site-header.is-stuck{
  background:rgba(6,10,22,.78);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom-color:var(--line);
  box-shadow:0 12px 30px rgba(3,8,20,.5);
  padding:8px 0;
}

.nav-grid{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
}

.nav-side{display:flex;align-items:center;gap:6px;}
.nav-side.left{justify-content:flex-start;}
.nav-side.right{justify-content:flex-end;}

.nav-link{
  display:inline-block;
  padding:9px 14px;
  border-radius:var(--radius-pill);
  color:var(--text-sub);
  font-size:14.5px;
  font-weight:500;
  transition:color var(--ease),background var(--ease);
}
.nav-link:hover{color:var(--text);background:var(--glass);}
.nav-link.active{color:var(--primary);background:rgba(43,217,255,.10);box-shadow:inset 0 0 0 1px rgba(43,217,255,.28);}

.brand{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:6px 18px;
  border-radius:var(--radius-pill);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  color:var(--text);
  font-weight:700;
  letter-spacing:.01em;
  font-size:16.5px;
  white-space:nowrap;
}
.brand:hover{color:var(--text);border-color:rgba(43,217,255,.4);}
.brand-dot{
  width:9px;height:9px;border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--second));
  box-shadow:0 0 12px rgba(43,217,255,.9);
  flex:none;
}

.nav-cta{
  display:inline-block;
  margin-left:8px;
  padding:10px 22px;
  border-radius:var(--radius-pill);
  background:linear-gradient(135deg,var(--primary),var(--second));
  color:#04101f;
  font-size:14.5px;
  font-weight:700;
  box-shadow:0 6px 18px rgba(43,217,255,.26);
  transition:transform var(--ease),box-shadow var(--ease),filter var(--ease);
}
.nav-cta:hover{color:#04101f;transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 10px 26px rgba(43,217,255,.36);}

.nav-toggle{
  display:none;
  justify-self:end;
  width:44px;height:44px;
  border-radius:14px;
  background:var(--glass);
  border:1px solid var(--line-strong);
  position:relative;
  cursor:pointer;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:50%;top:50%;
  width:18px;height:2px;
  background:var(--text);
  border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform var(--ease),opacity var(--ease);
}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:rotate(45deg);top:0;}
.nav-toggle[aria-expanded="true"] span::after{transform:rotate(-45deg);top:0;}

.mobile-menu{
  position:fixed;
  inset:0;
  z-index:110;
  background:rgba(6,10,22,.96);
  backdrop-filter:blur(22px);
  -webkit-backdrop-filter:blur(22px);
  padding:106px 0 40px;
  overflow-y:auto;
  opacity:0;
  visibility:hidden;
  transform:translateY(-10px);
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
}
.mobile-menu.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.mobile-menu ul{display:flex;flex-direction:column;}
.mobile-menu li + li{border-top:1px solid var(--line);}
.mobile-menu a{
  display:flex;
  align-items:center;
  min-height:52px;
  padding:0 4px;
  color:var(--text-sub);
  font-size:16px;
  font-weight:600;
}
.mobile-menu a:hover,
.mobile-menu a.active{color:var(--primary);}
.mobile-menu .mm-cta{
  margin-top:22px;
}
.mobile-menu .mm-cta a{
  justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--second));
  color:#04101f;
  border-radius:var(--radius-pill);
  border-top:none;
}
.mobile-menu .mm-contact{
  margin-top:24px;
  padding-top:18px;
  border-top:1px solid var(--line);
  color:var(--text-mute);
  font-size:13.5px;
  line-height:1.9;
}

/* ============ Hero ============ */
.cat-hero{
  position:relative;
  padding:150px 0 72px;
  min-height:38vh;
  display:flex;
  align-items:center;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.cat-hero-bg{
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  opacity:.30;
  filter:saturate(.9);
  z-index:0;
}
.cat-hero-veil{
  position:absolute;
  inset:0;
  z-index:1;
  background:linear-gradient(180deg,rgba(6,10,22,.72) 0%,rgba(6,10,22,.88) 55%,var(--bg) 100%);
}

.crumbs{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-mute);
  margin-bottom:18px;
  flex-wrap:wrap;
}
.crumbs a{color:var(--text-sub);}
.crumbs a:hover{color:var(--primary);}
.crumbs .sep{color:rgba(255,255,255,.25);}
.crumbs .current{color:var(--text-mute);}

.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--radius-pill);
  background:rgba(43,217,255,.10);
  border:1px solid rgba(43,217,255,.28);
  color:var(--primary);
  font-size:13px;
  font-weight:600;
  margin-bottom:18px;
}

.cat-hero h1{
  font-size:clamp(28px,4vw,42px);
  font-weight:700;
  line-height:1.18;
  margin-bottom:14px;
  max-width:16em;
}
.cat-hero h1 .hl{
  background:linear-gradient(135deg,var(--primary),var(--second));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}

.hero-lead{
  max-width:640px;
  color:var(--text-sub);
  font-size:15.5px;
  margin-bottom:26px;
}

.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}

.hero-chips{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:30px;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:6px 14px;
  border-radius:var(--radius-pill);
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--text-sub);
  font-size:13px;
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
}
.chip i{color:var(--primary);font-size:12px;}

/* ============ 板块通用 ============ */
.section{
  position:relative;
  padding:88px 0;
}
.section.tight{padding:64px 0;}

.section-head{max-width:720px;margin-bottom:44px;}
.section-kicker{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--primary);
  text-transform:uppercase;
  margin-bottom:12px;
}
.section-head h2{
  font-size:clamp(22px,3vw,34px);
  margin-bottom:12px;
}
.section-head p{color:var(--text-sub);margin:0;}

/* ============ 时间轴布局 ============ */
.flow-layout{
  display:grid;
  grid-template-columns:260px 1fr;
  gap:56px;
  align-items:start;
}

.anchor-nav{
  position:sticky;
  top:104px;
  padding:22px 20px;
  border-radius:var(--radius-panel);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--elev-1);
}
.anchor-title{
  font-size:13px;
  font-weight:700;
  color:var(--text-mute);
  letter-spacing:.08em;
  margin-bottom:14px;
}
.anchor-nav ol{display:flex;flex-direction:column;gap:2px;}
.anchor-nav a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 12px;
  border-radius:12px;
  color:var(--text-sub);
  font-size:14px;
  font-weight:500;
  border-left:2px solid transparent;
  transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.anchor-nav a .idx{
  font-variant-numeric:tabular-nums;
  font-size:12.5px;
  color:var(--text-mute);
}
.anchor-nav a:hover{background:var(--glass-hover);color:var(--text);}
.anchor-nav a.is-current{
  color:var(--primary);
  background:rgba(43,217,255,.08);
  border-left-color:var(--primary);
}
.anchor-nav a.is-current .idx{color:var(--primary);}

.timeline{position:relative;}
.tl-item{
  position:relative;
  padding:0 0 46px 60px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";
  position:absolute;
  left:15px;
  top:22px;
  bottom:-6px;
  width:1px;
  background:linear-gradient(180deg,rgba(43,217,255,.5),rgba(123,97,255,.28),rgba(255,255,255,.06));
}
.tl-item:last-child::before{display:none;}

.tl-dot{
  position:absolute;
  left:0;
  top:6px;
  width:31px;height:31px;
  border-radius:50%;
  background:radial-gradient(circle at 35% 35%,rgba(43,217,255,.95),rgba(123,97,255,.6));
  box-shadow:0 0 0 5px rgba(43,217,255,.10),0 0 22px rgba(43,217,255,.55);
}
.tl-dot::after{
  content:"";
  position:absolute;
  inset:9px;
  border-radius:50%;
  background:var(--bg);
}

.tl-card{
  padding:26px 26px 24px;
  border-radius:var(--radius-card);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.03));
  border:1px solid var(--line);
  box-shadow:var(--elev-1);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.tl-card:hover{
  transform:translateY(-4px);
  border-color:rgba(43,217,255,.35);
  box-shadow:var(--elev-2);
}

.tl-index{
  display:inline-block;
  font-variant-numeric:tabular-nums;
  font-size:13px;
  font-weight:700;
  color:var(--amber);
  letter-spacing:.1em;
  margin-bottom:8px;
}
.tl-card h3{font-size:19px;margin-bottom:10px;}
.tl-card p{color:var(--text-sub);margin-bottom:0;font-size:15px;}

.tl-points{
  margin-top:16px;
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:10px 18px;
}
.tl-points li{
  position:relative;
  padding-left:18px;
  color:var(--text-sub);
  font-size:14px;
  line-height:1.8;
}
.tl-points li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 10px rgba(43,217,255,.8);
}

.tl-figure{
  margin:18px 0 0;
  border-radius:16px;
  overflow:hidden;
  border:1px solid var(--line);
  position:relative;
  aspect-ratio:16/8;
  background:var(--raise);
}
.tl-figure img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform 400ms ease-out;
}
.tl-card:hover .tl-figure img{transform:scale(1.03);}
.tl-figure figcaption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:10px 14px;
  font-size:12.5px;
  color:var(--text-sub);
  background:linear-gradient(180deg,transparent,rgba(6,10,22,.86));
}

/* ============ 指标条 ============ */
.metric-strip{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--radius-panel);
  overflow:hidden;
  box-shadow:var(--elev-1);
}
.metric{
  background:rgba(11,18,36,.85);
  padding:28px 22px;
  text-align:left;
  transition:background var(--ease);
}
.metric:hover{background:rgba(17,26,49,.92);}
.metric .num{
  font-size:clamp(26px,3vw,34px);
  font-weight:700;
  font-variant-numeric:tabular-nums;
  background:linear-gradient(135deg,var(--primary),var(--second));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  line-height:1.2;
}
.metric .num small{font-size:15px;font-weight:600;-webkit-text-fill-color:var(--text-sub);color:var(--text-sub);margin-left:3px;}
.metric .lbl{margin-top:6px;color:var(--text-sub);font-size:14px;}

/* ============ 自检清单 ============ */
.check-wrap{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:48px;
  align-items:center;
}
.check-media{
  border-radius:var(--radius-panel);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--elev-2);
  aspect-ratio:4/3;
  background:var(--raise);
  position:relative;
}
.check-media img{width:100%;height:100%;object-fit:cover;}
.check-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,22,.05) 40%,rgba(6,10,22,.62) 100%);
}

.check-list{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:14px 22px;
  margin-top:26px;
}
.check-list li{
  display:flex;
  gap:11px;
  align-items:flex-start;
  padding:14px 16px;
  border-radius:14px;
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--text-sub);
  font-size:14.5px;
  line-height:1.75;
  transition:border-color var(--ease),background var(--ease),transform var(--ease);
}
.check-list li:hover{background:var(--glass-hover);border-color:rgba(43,217,255,.32);transform:translateY(-3px);}
.check-list i{color:var(--success);margin-top:5px;font-size:14px;flex:none;}

/* ============ FAQ ============ */
.faq-wrap{max-width:920px;margin:0 auto;}
.faq-wrap .accordion-item{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  margin-bottom:14px;
  overflow:hidden;
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
}
.faq-wrap .accordion-button{
  background:transparent;
  color:var(--text);
  font-size:16px;
  font-weight:600;
  padding:20px 22px;
  gap:14px;
  box-shadow:none;
  border-radius:var(--radius-card);
}
.faq-wrap .accordion-button:not(.collapsed){
  color:var(--primary);
  background:rgba(43,217,255,.06);
  box-shadow:none;
  border-bottom:1px solid var(--line);
}
.faq-wrap .accordion-button::after{
  filter:invert(1) sepia(1) saturate(4) hue-rotate(155deg);
  opacity:.75;
  background-size:14px;
  width:14px;height:14px;
}
.faq-wrap .accordion-button:focus{box-shadow:0 0 0 2px rgba(43,217,255,.35);}
.faq-wrap .accordion-button .q{
  font-variant-numeric:tabular-nums;
  font-size:13px;
  font-weight:700;
  color:var(--amber);
  letter-spacing:.06em;
  flex:none;
}
.faq-wrap .accordion-body{
  padding:20px 22px 24px 22px;
  color:var(--text-sub);
  font-size:15px;
  line-height:1.85;
  border-left:2px solid var(--primary);
}

/* ============ CTA ============ */
.cta-band{
  position:relative;
  padding:96px 0;
  text-align:center;
  overflow:hidden;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.cta-band::before{
  content:"";
  position:absolute;
  left:50%;top:50%;
  width:760px;height:520px;
  transform:translate(-50%,-50%);
  background:radial-gradient(closest-side,rgba(43,217,255,.16),transparent 72%);
  pointer-events:none;
}
.cta-band h2{
  font-size:clamp(22px,3vw,32px);
  max-width:660px;
  margin:0 auto 14px;
}
.cta-band p{
  color:var(--text-sub);
  max-width:620px;
  margin:0 auto 30px;
}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  padding:76px 0 0;
  background:linear-gradient(180deg,rgba(11,18,36,.4),rgba(6,10,22,.95));
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:44px;
  padding-bottom:52px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:9px;
  color:var(--text);
  font-weight:700;
  font-size:16.5px;
  letter-spacing:.01em;
  margin-bottom:16px;
}
.footer-brand:hover{color:var(--primary);}
.footer-intro{
  color:var(--text-mute);
  font-size:14px;
  line-height:1.9;
  max-width:34em;
  margin:0;
}
.footer-title{
  font-size:15px;
  font-weight:700;
  color:var(--text);
  margin-bottom:18px;
}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{
  color:var(--text-sub);
  font-size:14px;
  transition:color var(--ease),transform var(--ease);
  display:inline-block;
}
.footer-links a:hover{color:var(--primary);transform:translateX(3px);}
.footer-contact{color:var(--text-sub);font-size:14px;line-height:2.05;}
.footer-contact div{word-break:break-all;}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  padding:20px 0;
  border-top:1px solid var(--line);
  color:var(--text-mute);
  font-size:13px;
}

/* ============ 底部固定转化条 ============ */
.sticky-bar{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:130;
  background:rgba(11,18,36,.82);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-top:1px solid var(--line-strong);
  transform:translateY(110%);
  opacity:0;
  transition:transform 320ms ease-out,opacity 320ms ease-out;
  padding-bottom:env(safe-area-inset-bottom,0);
}
.sticky-bar.is-visible{transform:translateY(0);opacity:1;}
.sticky-inner{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:64px;
  padding-top:10px;
  padding-bottom:10px;
}
.sticky-text{
  flex:1;
  color:var(--text-sub);
  font-size:14.5px;
  min-width:0;
}
.sticky-text strong{color:var(--text);font-weight:600;}
.sticky-bar .btn-glow{padding:10px 22px;font-size:14.5px;}
.sticky-close{
  flex:none;
  width:36px;height:36px;
  border-radius:50%;
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--text-sub);
  cursor:pointer;
  transition:background var(--ease),color var(--ease);
}
.sticky-close:hover{background:var(--glass-hover);color:var(--text);}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .flow-layout{gap:40px;grid-template-columns:230px 1fr;}
}

@media (max-width:991.98px){
  .nav-side{display:none;}
  .nav-grid{grid-template-columns:auto 1fr auto;}
  .brand{justify-self:start;font-size:15.5px;padding:6px 14px;}
  .nav-toggle{display:block;}
  .flow-layout{grid-template-columns:1fr;gap:32px;}
  .anchor-nav{
    position:static;
    padding:12px;
    overflow-x:auto;
    overflow-y:hidden;
    -webkit-overflow-scrolling:touch;
  }
  .anchor-title{display:none;}
  .anchor-nav ol{
    flex-direction:row;
    gap:10px;
    min-width:max-content;
  }
  .anchor-nav a{
    padding:8px 16px;
    border-radius:var(--radius-pill);
    border-left:none;
    border:1px solid var(--line);
    white-space:nowrap;
    font-size:13.5px;
  }
  .anchor-nav a.is-current{border-color:rgba(43,217,255,.5);border-left:none;}
  .check-wrap{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .cat-hero{padding:132px 0 60px;}
  .section{padding:72px 0;}
}

@media (max-width:767.98px){
  body{padding-bottom:78px;}
  .wrap{padding:0 16px;}
  .sticky-bar{transform:translateY(0);opacity:1;}
  .sticky-bar .sticky-text{display:none;}
  .sticky-inner{justify-content:space-between;}
  .metric-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .tl-item{padding-left:46px;}
  .tl-item::before{left:12px;}
  .tl-dot{width:25px;height:25px;}
  .tl-dot::after{inset:7px;}
  .tl-points{grid-template-columns:1fr;}
  .check-list{grid-template-columns:1fr;}
  .tl-card{padding:22px 20px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .cat-hero{padding:118px 0 52px;}
  .cat-hero h1{font-size:clamp(25px,7vw,32px);}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .cta-band{padding:72px 0;}
  .brand{font-size:14.5px;}
  .brand-dot{width:8px;height:8px;}
}

@media (max-width:520px){
  .hero-actions .btn-glow,
  .hero-actions .btn-glass{width:100%;justify-content:center;}
  .metric{padding:22px 16px;}
  .tl-figure{aspect-ratio:16/10;}
  .faq-wrap .accordion-button{font-size:15px;padding:17px 16px;}
  .faq-wrap .accordion-body{padding:16px 16px 20px;}
}

/* roulang page: category3 */
:root{
  --bg:#060A16;
  --panel:#0B1224;
  --raised:#111A31;
  --primary:#2BD9FF;
  --primary-rgb:43,217,255;
  --violet:#7B61FF;
  --violet-rgb:123,97,255;
  --amber:#FFB84D;
  --success:#34D399;
  --warning:#FF6B6B;
  --text:#EAF2FF;
  --text-2:#A6B4CC;
  --text-3:#6E7D99;
  --line:rgba(255,255,255,.10);
  --glass:rgba(255,255,255,.055);
  --glass-line:rgba(255,255,255,.12);
  --r-card:18px;
  --r-panel:24px;
  --r-pill:999px;
  --r-input:12px;
  --elev-1:0 6px 18px rgba(3,8,20,.45);
  --elev-2:0 18px 40px rgba(3,8,20,.55);
  --glow:0 0 0 1px rgba(43,217,255,.35), 0 8px 26px rgba(43,217,255,.28);
  --t:200ms ease-out;
  --bs-body-bg:#060A16;
  --bs-body-color:#EAF2FF;
  --bs-primary-rgb:43,217,255;
  --bs-border-radius:18px;
  --bs-border-color:rgba(255,255,255,.12);
  --bs-link-color:#2BD9FF;
  --bs-link-hover-color:#7B61FF;
  --bs-font-sans-serif:"HarmonyOS Sans","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(760px 460px at 12% -6%, rgba(43,217,255,.14), transparent 62%),
    radial-gradient(680px 420px at 88% 2%, rgba(123,97,255,.16), transparent 64%),
    radial-gradient(520px 320px at 50% 102%, rgba(43,217,255,.06), transparent 70%);
}
a{color:var(--primary);text-decoration:none;transition:color var(--t)}
a:hover{color:#7FE6FF}
img{max-width:100%;display:block}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
.section{position:relative;z-index:1;padding:96px 0}
.section-tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:48px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;font-weight:600;
  color:var(--primary);text-transform:uppercase;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(43,217,255,.08);
  border:1px solid rgba(43,217,255,.24);
  margin-bottom:18px;
}
h1,h2,h3,h4{margin:0 0 14px;line-height:1.28;font-weight:700;letter-spacing:.01em}
h2{font-size:clamp(22px,3vw,34px)}
h3{font-size:19px;font-weight:600}
.section-head p{color:var(--text-2);font-size:15.5px;margin:0;max-width:720px}
.section-head.center p{margin:0 auto}
.text-dim{color:var(--text-2)}
.text-weak{color:var(--text-3)}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(6,10,22,.55);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid transparent;
  transition:background var(--t),border-color var(--t),box-shadow var(--t);
}
.site-header.is-scrolled{
  background:rgba(6,10,22,.86);
  border-bottom-color:var(--glass-line);
  box-shadow:0 10px 30px rgba(3,8,20,.5);
}
.nav-grid{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  min-height:76px;
  transition:min-height var(--t);
}
.site-header.is-scrolled .nav-grid{min-height:66px}
.nav-side{list-style:none;display:flex;align-items:center;gap:4px;margin:0;padding:0}
.nav-side.right{justify-content:flex-end}
.nav-link{
  display:inline-flex;align-items:center;
  padding:9px 14px;border-radius:var(--r-pill);
  font-size:14.5px;font-weight:500;color:var(--text-2);
  transition:color var(--t),background var(--t),box-shadow var(--t);
  white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.06)}
.nav-link.active{
  color:#06121E;
  background:linear-gradient(135deg,var(--primary),var(--violet));
  box-shadow:var(--glow);
  font-weight:600;
}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  margin-left:10px;padding:10px 20px;border-radius:var(--r-pill);
  font-size:14.5px;font-weight:600;color:#06121E;
  background:linear-gradient(135deg,var(--primary),var(--violet));
  box-shadow:var(--glow);
  transition:transform var(--t),filter var(--t),box-shadow var(--t);
  white-space:nowrap;
}
.nav-cta:hover{color:#06121E;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(43,217,255,.5),0 12px 32px rgba(43,217,255,.36)}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:18px;font-weight:700;letter-spacing:.01em;color:var(--text);
  padding:6px 10px;border-radius:var(--r-pill);
  transition:color var(--t);
}
.brand:hover{color:#fff}
.brand-dot{
  width:10px;height:10px;border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--violet));
  box-shadow:0 0 0 4px rgba(43,217,255,.14),0 0 16px rgba(43,217,255,.7);
  flex:0 0 auto;
}
.nav-toggle{
  display:none;position:absolute;right:24px;
  width:44px;height:44px;border-radius:14px;
  border:1px solid var(--glass-line);background:var(--glass);
  cursor:pointer;align-items:center;justify-content:center;
  transition:background var(--t),border-color var(--t);
}
.nav-toggle:hover{background:rgba(255,255,255,.09);border-color:rgba(43,217,255,.4)}
.nav-toggle span{
  position:relative;width:18px;height:2px;border-radius:2px;
  background:var(--text);display:block;transition:background var(--t);
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--text);
  transition:transform var(--t);
}
.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{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}
.mobile-menu{
  display:none;
  position:absolute;left:0;right:0;top:100%;
  background:rgba(8,13,26,.97);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid var(--glass-line);
  box-shadow:0 24px 48px rgba(3,8,20,.6);
  max-height:calc(100vh - 76px);
  overflow-y:auto;
}
.mobile-menu.is-open{display:block;animation:fadeDown .22s ease-out}
@keyframes fadeDown{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
.mobile-list{list-style:none;margin:0;padding:14px 0 0}
.mobile-list li{border-bottom:1px solid var(--line)}
.mobile-list a{
  display:flex;align-items:center;min-height:52px;
  padding:0 4px;font-size:16px;font-weight:500;color:var(--text);
}
.mobile-list a:hover,.mobile-list a.active{color:var(--primary)}
.mobile-cta{display:flex;justify-content:center;margin:20px 0 8px;padding:14px 20px;border-radius:var(--r-pill);font-weight:600;color:#06121E;background:linear-gradient(135deg,var(--primary),var(--violet));box-shadow:var(--glow)}
.mobile-cta:hover{color:#06121E}
.mobile-contact{margin:14px 0 22px;font-size:13.5px;color:var(--text-3)}

/* ============ 通用按钮 ============ */
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 30px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;color:#06121E;
  background:linear-gradient(135deg,var(--primary),var(--violet));
  border:1px solid transparent;
  box-shadow:var(--glow);
  transition:transform var(--t),filter var(--t),box-shadow var(--t);
  cursor:pointer;
}
.btn-glow:hover{color:#06121E;filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(43,217,255,.5),0 14px 34px rgba(43,217,255,.4)}
.btn-glow:active{transform:translateY(0)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;color:var(--text);
  background:var(--glass);
  border:1px solid var(--glass-line);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  transition:background var(--t),border-color var(--t),transform var(--t),color var(--t);
  cursor:pointer;
}
.btn-ghost:hover{color:#fff;background:rgba(255,255,255,.09);border-color:rgba(43,217,255,.45);transform:translateY(-2px)}
.btn-link-ghost{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14.5px;font-weight:600;color:var(--primary);
  padding:8px 2px;
}
.btn-link-ghost i{transition:transform var(--t)}
.btn-link-ghost:hover i{transform:translateX(5px)}
.btn,.btn:focus{box-shadow:none}
.btn-primary{
  --bs-btn-bg:transparent;--bs-btn-border-color:transparent;
  --bs-btn-hover-bg:transparent;--bs-btn-hover-border-color:transparent;
  --bs-btn-active-bg:transparent;--bs-btn-active-border-color:transparent;
  background:linear-gradient(135deg,var(--primary),var(--violet));
  color:#06121E;border-radius:var(--r-pill);
}

/* ============ 分类页 Hero ============ */
.page-hero{
  position:relative;z-index:1;
  overflow:hidden;
  padding:64px 0 72px;
  border-bottom:1px solid var(--line);
  background-image:
    radial-gradient(760px 400px at 18% 0%, rgba(43,217,255,.20), transparent 62%),
    radial-gradient(620px 380px at 88% 10%, rgba(123,97,255,.22), transparent 66%),
    linear-gradient(180deg, rgba(6,10,22,.86), rgba(6,10,22,.96)),
    url("/assets/images/backpic/back-3.png");
  background-size:auto,auto,auto,cover;
  background-position:center,center,center,center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 30% 20%, #000 0%, transparent 76%);
  -webkit-mask-image:radial-gradient(circle at 30% 20%, #000 0%, transparent 76%);
  opacity:.6;
}
.breadcrumb-nav{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:22px;
}
.breadcrumb-nav a{color:var(--text-3)}
.breadcrumb-nav a:hover{color:var(--primary)}
.breadcrumb-nav .sep{color:rgba(255,255,255,.22)}
.breadcrumb-nav .current{color:var(--text-2)}
.hero-title{
  font-size:clamp(28px,4.2vw,44px);
  font-weight:700;line-height:1.22;
  max-width:900px;margin-bottom:16px;
}
.hero-title .mark{
  background:linear-gradient(120deg,var(--primary),var(--violet));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{
  font-size:16.5px;color:var(--text-2);max-width:720px;margin:0 0 28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-badges{list-style:none;display:flex;flex-wrap:wrap;gap:12px;margin:0;padding:0}
.hero-badges li{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:var(--r-pill);
  font-size:13px;color:var(--text-2);
  background:var(--glass);border:1px solid var(--glass-line);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
}
.hero-badges li i{color:var(--primary);font-size:12px}
.hero-badges li strong{color:var(--amber);font-weight:700;font-variant-numeric:tabular-nums}

/* ============ 卡片网格 ============ */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.fcard{
  position:relative;
  display:flex;flex-direction:column;gap:12px;
  padding:28px 26px 26px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--glass-line);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--elev-1);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t),background var(--t);
}
.fcard:hover{
  transform:translateY(-4px);
  border-color:rgba(43,217,255,.45);
  box-shadow:var(--elev-2);
  background:rgba(255,255,255,.075);
}
.fcard-icon{
  width:52px;height:52px;border-radius:16px;
  display:grid;place-items:center;
  font-size:20px;color:var(--primary);
  background:linear-gradient(135deg,rgba(43,217,255,.20),rgba(123,97,255,.22));
  border:1px solid var(--glass-line);
  box-shadow:inset 0 0 22px rgba(43,217,255,.14);
}
.fcard h3{font-size:18px;margin:4px 0 0}
.fcard p{margin:0;font-size:14.5px;line-height:1.85;color:var(--text-2)}
.fcard-tag{
  align-self:flex-start;
  font-size:12px;font-weight:600;letter-spacing:.06em;
  color:var(--amber);
  padding:4px 12px;border-radius:var(--r-pill);
  background:rgba(255,184,77,.10);
  border:1px solid rgba(255,184,77,.28);
}
.fcard-more{
  margin-top:auto;padding-top:14px;
  display:inline-flex;align-items:center;gap:8px;
  font-size:13.5px;font-weight:600;color:var(--primary);
  border-top:1px solid var(--line);
}
.fcard-more i{transition:transform var(--t);font-size:12px}
.fcard:hover .fcard-more i{transform:translateX(5px)}

/* ============ 领取路径 ============ */
.path-grid{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:56px;align-items:center;
}
.path-media{
  position:relative;
  border-radius:var(--r-panel);
  overflow:hidden;
  border:1px solid var(--glass-line);
  box-shadow:var(--elev-2);
  aspect-ratio:4/3;
}
.path-media img{width:100%;height:100%;object-fit:cover}
.path-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,22,0) 40%,rgba(6,10,22,.66) 100%);
}
.path-badge{
  position:absolute;left:22px;bottom:22px;z-index:2;
  display:inline-flex;align-items:center;gap:10px;
  padding:10px 18px;border-radius:var(--r-pill);
  font-size:13px;color:var(--text);
  background:rgba(11,18,36,.72);
  border:1px solid var(--glass-line);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
}
.path-badge i{color:var(--primary)}
.step-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:22px}
.step-list li{
  display:grid;grid-template-columns:56px 1fr;gap:18px;align-items:start;
  padding-bottom:22px;border-bottom:1px dashed var(--line);
}
.step-list li:last-child{border-bottom:none;padding-bottom:0}
.step-num{
  width:56px;height:56px;border-radius:18px;
  display:grid;place-items:center;
  font-size:17px;font-weight:700;font-variant-numeric:tabular-nums;
  color:var(--primary);
  background:rgba(43,217,255,.08);
  border:1px solid rgba(43,217,255,.28);
  box-shadow:inset 0 0 20px rgba(43,217,255,.12);
}
.step-list h3{font-size:17px;margin:0 0 4px}
.step-list p{margin:0;font-size:14.5px;color:var(--text-2);line-height:1.8}

/* ============ 对比表 ============ */
.table-wrap{
  border-radius:var(--r-card);
  border:1px solid var(--glass-line);
  background:var(--glass);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--elev-1);
  overflow-x:auto;
  overflow-y:hidden;
}
.compare-table{
  width:100%;min-width:760px;border-collapse:separate;border-spacing:0;
  font-size:14.5px;
}
.compare-table caption{
  caption-side:top;text-align:left;
  padding:20px 24px 6px;font-size:13.5px;color:var(--text-3);
}
.compare-table th{
  text-align:left;font-size:13px;letter-spacing:.08em;font-weight:600;
  color:var(--text-3);text-transform:uppercase;
  padding:16px 22px;background:rgba(255,255,255,.04);
  border-bottom:1px solid var(--glass-line);
  white-space:nowrap;
}
.compare-table td{
  padding:18px 22px;color:var(--text-2);
  border-bottom:1px solid var(--line);
  vertical-align:middle;
}
.compare-table td:first-child{
  font-weight:700;color:var(--text);
  border-left:3px solid rgba(43,217,255,.32);
}
.compare-table tbody tr:nth-child(odd){background:rgba(255,255,255,.028)}
.compare-table tbody tr:hover{background:rgba(43,217,255,.07)}
.compare-table tbody tr:last-child td{border-bottom:none}
.pill-soft{
  display:inline-block;padding:3px 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;
  color:var(--success);background:rgba(52,211,153,.10);
  border:1px solid rgba(52,211,153,.28);
}
.pill-warn{
  display:inline-block;padding:3px 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;
  color:var(--amber);background:rgba(255,184,77,.10);
  border:1px solid rgba(255,184,77,.28);
}

/* ============ FAQ ============ */
.faq-accordion{
  --bs-accordion-bg:transparent;
  --bs-accordion-border-color:transparent;
  --bs-accordion-btn-color:#EAF2FF;
  --bs-accordion-active-color:#FFFFFF;
  --bs-accordion-active-bg:rgba(43,217,255,.06);
  --bs-accordion-btn-focus-box-shadow:none;
  --bs-accordion-border-width:0;
}
.faq-accordion .accordion-item{
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-card)!important;
  margin-bottom:14px;
  overflow:hidden;
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  transition:border-color var(--t),background var(--t);
}
.faq-accordion .accordion-item:hover{border-color:rgba(43,217,255,.35)}
.faq-accordion .accordion-button{
  position:relative;
  display:flex;align-items:center;gap:16px;
  padding:20px 52px 20px 28px;
  background:transparent;
  color:var(--text);
  font-size:16px;font-weight:600;
  box-shadow:none!important;
  transition:background var(--t),color var(--t);
}
.faq-accordion .accordion-button:not(.collapsed){
  background:rgba(43,217,255,.06);
  color:#fff;
}
.faq-accordion .accordion-button::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.12);
  transition:background var(--t),box-shadow var(--t);
}
.faq-accordion .accordion-button:not(.collapsed)::before{
  background:var(--primary);
  box-shadow:0 0 14px rgba(43,217,255,.7);
}
.q-num{
  flex:0 0 auto;
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
  color:var(--primary);
  letter-spacing:.04em;
}
.accordion-button::after{
  width:10px!important;height:10px!important;
  border-right:2px solid var(--text-3);
  border-bottom:2px solid var(--text-3);
  background-image:none!important;
  transform:rotate(45deg);
  transition:transform var(--t),border-color var(--t);
  margin-left:auto;
  position:absolute;right:28px;top:50%;
  margin-top:-7px;
}
.accordion-button:not(.collapsed)::after{
  transform:rotate(-135deg);
  border-color:var(--primary);
  margin-top:-2px;
}
.faq-accordion .accordion-body{
  padding:4px 28px 24px 28px;
  font-size:15px;line-height:1.9;color:var(--text-2);
}

/* ============ CTA ============ */
.cta-block{
  position:relative;
  text-align:center;
  padding:76px 32px;
  border-radius:var(--r-panel);
  border:1px solid var(--glass-line);
  background:
    radial-gradient(560px 260px at 50% 0%, rgba(43,217,255,.16), transparent 72%),
    radial-gradient(460px 240px at 50% 100%, rgba(123,97,255,.16), transparent 74%),
    var(--panel);
  overflow:hidden;
  box-shadow:var(--elev-1);
}
.cta-block h2{max-width:640px;margin:0 auto 14px}
.cta-block p{max-width:600px;margin:0 auto 28px;color:var(--text-2);font-size:15.5px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;z-index:1;
  margin-top:40px;
  padding:72px 0 0;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(11,18,36,.5),rgba(6,10,22,.96));
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:46px;
}
.footer-brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:17px;font-weight:700;color:var(--text);margin-bottom:14px;
}
.footer-brand:hover{color:#fff}
.footer-intro{margin:0;font-size:14px;line-height:1.9;color:var(--text-3);max-width:320px}
.footer-title{
  font-size:14px;font-weight:700;color:var(--text);
  letter-spacing:.06em;margin:0 0 18px;
}
.footer-links{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:var(--text-3);transition:color var(--t),transform var(--t);display:inline-block}
.footer-links a:hover{color:var(--primary);transform:translateX(3px)}
.footer-contact{font-size:14px;color:var(--text-3);display:flex;flex-direction:column;gap:10px;line-height:1.75}
.footer-contact a{color:var(--text-2)}
.footer-contact a:hover{color:var(--primary)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  padding:22px 0 26px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ============ 底部固定转化条 ============ */
.convert-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  display:flex;align-items:center;gap:16px;
  min-height:64px;
  padding:10px 24px calc(10px + env(safe-area-inset-bottom));
  background:rgba(11,18,36,.82);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-top:1px solid var(--glass-line);
  box-shadow:0 -12px 34px rgba(3,8,20,.55);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity var(--t),transform var(--t);
}
.convert-bar.is-visible{opacity:1;transform:translateY(0);pointer-events:auto}
.convert-inner{
  width:100%;max-width:1200px;margin:0 auto;
  display:flex;align-items:center;gap:16px;
}
.convert-text{flex:1 1 auto;font-size:14px;color:var(--text-2);margin:0}
.convert-bar .btn-glow{padding:11px 24px;font-size:14px}
.convert-close{
  flex:0 0 auto;
  width:34px;height:34px;border-radius:50%;
  border:1px solid var(--glass-line);background:transparent;
  color:var(--text-3);font-size:16px;line-height:1;cursor:pointer;
  transition:color var(--t),border-color var(--t),background var(--t);
}
.convert-close:hover{color:#fff;border-color:rgba(43,217,255,.45);background:rgba(255,255,255,.06)}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-grid > div:last-child{grid-column:1 / -1}
}
@media (max-width:991.98px){
  .nav-side{display:none}
  .nav-grid{display:flex;justify-content:center;position:relative}
  .nav-toggle{display:flex}
  .mobile-menu{max-height:calc(100vh - 70px)}
  .section{padding:72px 0}
  .path-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-grid > div:last-child{grid-column:1 / -1}
}
@media (max-width:767.98px){
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom))}
  .wrap{padding:0 16px}
  .nav-toggle{right:16px}
  .brand{font-size:16px}
  .brand-dot{width:9px;height:9px}
  .page-hero{padding:44px 0 56px}
  .hero-lead{font-size:15.5px}
  .hero-actions{gap:12px}
  .hero-actions .btn-glow,.hero-actions .btn-ghost{width:100%}
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .section-head{margin-bottom:32px}
  .card-grid{grid-template-columns:1fr;gap:18px}
  .fcard{padding:24px 22px}
  .compare-table{min-width:640px;font-size:13.5px}
  .compare-table th,.compare-table td{padding:14px 16px}
  .faq-accordion .accordion-button{padding:18px 46px 18px 22px;font-size:15px}
  .faq-accordion .accordion-body{padding:4px 22px 22px}
  .accordion-button::after{right:22px}
  .cta-block{padding:52px 20px}
  .cta-actions .btn-glow,.cta-actions .btn-ghost{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .convert-bar{opacity:1;transform:none;pointer-events:auto}
  .convert-text{font-size:13px;line-height:1.6}
  .convert-bar .btn-glow{padding:10px 18px;font-size:13px}
  .convert-close{display:none}
}
@media (max-width:519.98px){
  .hero-badges li{width:100%}
  .step-list li{grid-template-columns:48px 1fr;gap:14px}
  .step-num{width:48px;height:48px;border-radius:14px;font-size:15px}
  .compare-table{min-width:560px}
}