/* roulang page: index */
:root{
  --brand:#35E0D0;
  --brand-2:#8B5CF6;
  --accent:#F6B85C;
  --bg-1:#050B16;
  --bg-2:#0B1A2E;
  --glass:rgba(16,26,44,.58);
  --glass-solid:rgba(12,22,38,.92);
  --line:rgba(120,220,255,.14);
  --line-strong:rgba(120,220,255,.32);
  --text:#E8F0FF;
  --muted:#9FB0CC;
  --radius-xl:24px;
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow:0 16px 48px rgba(0,0,0,.45);
  --shadow-sm:0 8px 24px rgba(0,0,0,.35);
  --glow:0 0 24px rgba(53,224,208,.35);
  --container:1240px;
  --bs-body-bg:transparent;
  --bs-body-color:#E8F0FF;
  --bs-border-color:rgba(120,220,255,.14);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  color:var(--text);
  background:var(--bg-1);
  line-height:1.8;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-2;
  background:
    radial-gradient(900px 520px at 12% -8%, rgba(53,224,208,.16), transparent 62%),
    radial-gradient(760px 520px at 92% 6%, rgba(139,92,246,.16), transparent 60%),
    radial-gradient(700px 600px at 50% 108%, rgba(53,224,208,.08), transparent 65%),
    linear-gradient(180deg,#050B16 0%,#081426 46%,#0B1A2E 72%,#050B16 100%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(120,220,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,220,255,.045) 1px,transparent 1px);
  background-size:72px 72px;
  mask-image:radial-gradient(1000px 700px at 50% 12%,#000 0%,transparent 78%);
}
a{color:var(--brand);text-decoration:none;transition:color .22s ease}
a:hover{color:#7ff0e5}
img{max-width:100%;height:auto;display:block}
button,input{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{max-width:var(--container);padding-left:20px;padding-right:20px}
.row{--bs-gutter-x:1.75rem;--bs-gutter-y:1.75rem}
section{position:relative}
.section{padding:88px 0}
.section-sm{padding:64px 0}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1040;
  background:linear-gradient(180deg,rgba(5,11,22,.86),rgba(5,11,22,.42));
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.scrolled{
  background:rgba(8,15,28,.88);
  border-bottom-color:var(--line);
  box-shadow:0 12px 34px rgba(0,0,0,.42);
}
.brand-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  min-height:70px;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  color:var(--text);
  min-height:44px;
}
.brand:hover{color:var(--text)}
.brand-mark{
  width:44px;height:44px;
  flex:0 0 44px;
  border-radius:14px;
  display:grid;place-items:center;
  font-weight:800;
  font-size:15px;
  letter-spacing:.5px;
  color:#04121A;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:var(--glow);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:.3px}
.brand-text span{font-size:12px;color:var(--muted);letter-spacing:1.6px}
.brand-tools{display:flex;align-items:center;gap:12px}
.nav-search{
  display:flex;align-items:center;
  gap:8px;
  height:44px;
  padding:0 14px;
  border-radius:999px;
  background:var(--glass);
  border:1px solid var(--line);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.nav-search:focus-within{border-color:var(--line-strong);box-shadow:0 0 0 3px rgba(53,224,208,.14)}
.nav-search i{color:var(--muted);font-size:14px}
.nav-search input{
  width:150px;
  border:0;background:transparent;color:var(--text);
  font-size:14px;outline:none;
}
.nav-search input::placeholder{color:rgba(159,176,204,.75)}
.channel-row{
  border-top:1px solid rgba(120,220,255,.08);
}
.channel-scroll{
  display:flex;
  align-items:center;
  gap:6px;
  min-height:50px;
  overflow-x:auto;
  scrollbar-width:none;
}
.channel-scroll::-webkit-scrollbar{display:none}
.channel-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:8px 16px;
  border-radius:999px;
  color:var(--muted);
  font-size:15px;
  white-space:nowrap;
  transition:color .22s ease,background .22s ease,border-color .22s ease;
  border:1px solid transparent;
}
.channel-link:hover{color:var(--text);background:rgba(53,224,208,.08)}
.channel-link.active{
  color:#04121A;
  background:linear-gradient(135deg,var(--brand),#63e9dd);
  font-weight:700;
  box-shadow:0 0 18px rgba(53,224,208,.3);
}
.channel-link .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 8px rgba(246,184,92,.85);
}

/* ---------- buttons ---------- */
.btn{transition:transform .2s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;
  padding:12px 26px;
  border:0;
  border-radius:999px;
  font-size:15px;
  font-weight:700;
  letter-spacing:.4px;
  color:#04121A;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:var(--glow);
}
.btn-main:hover{color:#04121A;transform:translateY(-2px);box-shadow:0 0 32px rgba(53,224,208,.5)}
.btn-main:active{transform:translateY(0);box-shadow:0 0 16px rgba(53,224,208,.35)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;
  padding:12px 24px;
  border-radius:999px;
  border:1px solid var(--line-strong);
  background:rgba(16,26,44,.42);
  color:var(--text);
  font-size:15px;
  font-weight:600;
}
.btn-ghost:hover{color:var(--text);background:rgba(53,224,208,.12);border-color:var(--brand);transform:translateY(-2px)}
.btn-sm{min-height:44px;padding:10px 18px;font-size:14px}
.btn-block{width:100%}

/* ---------- hero ---------- */
.hero{
  position:relative;
  padding:76px 0 88px;
  overflow:hidden;
}
.hero-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
  opacity:.3;
  filter:saturate(1.1);
}
.hero-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(5,11,22,.6) 0%,rgba(5,11,22,.86) 60%,rgba(5,11,22,.97) 100%);
}
.hero-inner{position:relative;z-index:2}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;
  border-radius:999px;
  font-size:13px;
  letter-spacing:.6px;
  color:#B9F6EF;
  background:rgba(53,224,208,.1);
  border:1px solid rgba(53,224,208,.32);
}
.hero-tag i{color:var(--brand)}
.hero-title{
  font-size:clamp(2rem,5vw,3.4rem);
  font-weight:800;
  line-height:1.26;
  letter-spacing:.5px;
  margin:22px 0 18px;
  background:linear-gradient(120deg,#FFFFFF 0%,#CBEFEA 42%,#A99BF8 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  font-size:17px;
  line-height:1.9;
  color:var(--muted);
  max-width:620px;
  margin:0 0 30px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px}
.hero-points{
  list-style:none;
  padding:0;
  margin:30px 0 0;
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
}
.hero-points li{
  display:flex;align-items:center;gap:8px;
  font-size:14px;color:var(--muted);
}
.hero-points i{color:var(--brand);font-size:13px}
.glass-card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-xl);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow);
}
.hero-card{padding:26px 24px}
.hero-card-head{
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);letter-spacing:.6px;
  padding-bottom:16px;border-bottom:1px dashed rgba(120,220,255,.18);
}
.live-dot{
  display:inline-flex;align-items:center;gap:7px;
  color:#8CF3E8;font-size:12px;
}
.live-dot::before{
  content:"";width:7px;height:7px;border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 10px rgba(53,224,208,.9);
  animation:pulse 1.8s infinite;
}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.8)}}
.hero-stat{
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;
  padding:15px 0;
  border-bottom:1px solid rgba(120,220,255,.1);
}
.hero-stat:last-child{border-bottom:0;padding-bottom:0}
.hero-stat span{font-size:14px;color:var(--muted)}
.hero-stat strong{font-size:18px;font-weight:800;color:var(--brand)}
.hero-stat strong.amber{color:var(--accent)}

/* ---------- section head ---------- */
.section-head{max-width:760px;margin-bottom:44px}
.section-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:2px;color:var(--brand);
  text-transform:uppercase;
}
.section-kicker::before{content:"";width:26px;height:2px;background:linear-gradient(90deg,var(--brand),transparent)}
.section-title{
  font-size:clamp(1.5rem,3vw,2.15rem);
  font-weight:800;
  line-height:1.4;
  margin:14px 0 12px;
  color:#F2F7FF;
}
.section-desc{color:var(--muted);font-size:15.5px;margin:0}

/* ---------- bento ---------- */
.bento{
  display:grid;
  grid-template-columns:1.35fr 1fr;
  gap:20px;
}
.bento-card{
  position:relative;
  padding:30px 28px;
  border-radius:var(--radius-xl);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-sm);
  overflow:hidden;
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.bento-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 20px 52px rgba(0,0,0,.5)}
.bento-card::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(420px 220px at 100% 0%,rgba(53,224,208,.12),transparent 70%);
  opacity:0;transition:opacity .3s ease;pointer-events:none;
}
.bento-card:hover::before{opacity:1}
.bento-main{display:flex;flex-direction:column;justify-content:space-between;min-height:330px}
.bento-stack{display:grid;gap:20px}
.icon-badge{
  width:52px;height:52px;
  border-radius:16px;
  display:grid;place-items:center;
  font-size:20px;
  color:var(--brand);
  background:rgba(53,224,208,.1);
  border:1px solid rgba(53,224,208,.26);
  margin-bottom:18px;
}
.icon-badge.purple{color:#B9A5FF;background:rgba(139,92,246,.12);border-color:rgba(139,92,246,.3)}
.icon-badge.amber{color:var(--accent);background:rgba(246,184,92,.1);border-color:rgba(246,184,92,.28)}
.bento-card h3{font-size:19px;font-weight:750;margin:0 0 12px;color:#F2F7FF}
.bento-card p{margin:0 0 16px;color:var(--muted);font-size:15px;line-height:1.85}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--brand);
}
.text-link i{transition:transform .22s ease}
.text-link:hover i{transform:translateX(4px)}
.mini-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.mini-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--muted)}
.mini-list i{color:var(--brand);margin-top:5px;font-size:12px}

/* ---------- demo ---------- */
.demo-tabs{
  display:flex;flex-wrap:wrap;gap:8px;
  margin-bottom:26px;
}
.demo-tab{
  min-height:44px;
  padding:9px 20px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(16,26,44,.42);
  color:var(--muted);
  font-size:14.5px;
  cursor:pointer;
  transition:all .22s ease;
}
.demo-tab:hover{color:var(--text);border-color:var(--line-strong)}
.demo-tab.active{
  color:#04121A;
  font-weight:700;
  background:linear-gradient(135deg,var(--brand),#63e9dd);
  border-color:transparent;
  box-shadow:0 0 18px rgba(53,224,208,.32);
}
.demo-panel{display:none;animation:fadeUp .4s ease}
.demo-panel.active{display:block}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.demo-frame{
  position:relative;
  border-radius:var(--radius-xl);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  background:rgba(9,17,31,.7);
}
.demo-frame img{width:100%;height:auto;transition:transform .5s ease}
.demo-frame:hover img{transform:scale(1.03)}
.demo-frame figcaption{
  position:absolute;left:16px;bottom:16px;
  padding:8px 14px;
  border-radius:999px;
  font-size:13px;
  color:#D8FCF7;
  background:rgba(6,13,25,.72);
  border:1px solid rgba(120,220,255,.24);
  backdrop-filter:blur(8px);
}
.demo-list{list-style:none;padding:0;margin:0;display:grid;gap:16px}
.demo-list li{
  display:flex;gap:14px;
  padding:16px 18px;
  border-radius:var(--radius-md);
  background:rgba(16,26,44,.44);
  border:1px solid var(--line);
  transition:border-color .24s ease,transform .24s ease;
}
.demo-list li:hover{border-color:var(--line-strong);transform:translateX(4px)}
.demo-list .idx{
  flex:0 0 30px;height:30px;
  border-radius:10px;
  display:grid;place-items:center;
  font-size:13px;font-weight:800;
  color:var(--brand);
  background:rgba(53,224,208,.1);
  border:1px solid rgba(53,224,208,.24);
}
.demo-list h4{margin:0 0 6px;font-size:15.5px;font-weight:700;color:#EDF4FF}
.demo-list p{margin:0;font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- proof ---------- */
.proof-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.counter-card{
  padding:26px 24px;
  border-radius:var(--radius-lg);
  background:linear-gradient(160deg,rgba(53,224,208,.1),rgba(16,26,44,.5));
  border:1px solid var(--line);
  text-align:left;
}
.counter-num{
  font-size:clamp(1.9rem,3.4vw,2.6rem);
  font-weight:800;
  color:var(--brand);
  line-height:1.1;
  letter-spacing:1px;
}
.counter-label{margin-top:8px;font-size:14px;color:var(--muted)}
.quote-card{
  padding:26px 24px;
  border-radius:var(--radius-lg);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-sm);
  height:100%;
  transition:transform .26s ease,border-color .26s ease;
}
.quote-card:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.quote-card p{margin:0 0 18px;font-size:15px;line-height:1.85;color:#DCE6F7}
.quote-user{display:flex;align-items:center;gap:12px}
.avatar{
  width:44px;height:44px;flex:0 0 44px;
  border-radius:50%;
  display:grid;place-items:center;
  font-weight:800;font-size:16px;color:#04121A;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
}
.avatar.amber{background:linear-gradient(135deg,var(--accent),#E58ACB)}
.quote-user strong{display:block;font-size:14.5px;color:#EDF4FF}
.quote-user span{font-size:13px;color:var(--muted)}
.brandwall{
  display:flex;flex-wrap:wrap;gap:12px;
  margin-top:22px;
}
.brandwall span{
  display:inline-flex;align-items:center;gap:8px;
  min-height:44px;
  padding:9px 18px;
  border-radius:12px;
  font-size:14px;
  color:var(--muted);
  background:rgba(16,26,44,.4);
  border:1px solid var(--line);
  transition:color .22s ease,border-color .22s ease;
}
.brandwall span:hover{color:var(--text);border-color:var(--line-strong)}
.brandwall i{color:var(--brand)}

/* ---------- pricing ---------- */
.billing-switch{
  display:inline-flex;
  padding:5px;
  border-radius:999px;
  background:rgba(16,26,44,.55);
  border:1px solid var(--line);
  gap:4px;
}
.billing-switch button{
  min-height:44px;
  padding:9px 22px;
  border:0;border-radius:999px;
  background:transparent;
  color:var(--muted);
  font-size:14.5px;
  cursor:pointer;
  transition:all .22s ease;
}
.billing-switch button.active{
  color:#04121A;font-weight:700;
  background:linear-gradient(135deg,var(--brand),#63e9dd);
}
.price-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;align-items:stretch}
.price-card{
  position:relative;
  display:flex;flex-direction:column;
  padding:30px 26px;
  border-radius:var(--radius-xl);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-sm);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.price-card:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.price-card.featured{
  transform:translateY(-14px);
  background:linear-gradient(165deg,rgba(53,224,208,.14),rgba(139,92,246,.12) 55%,rgba(16,26,44,.66));
  border-color:rgba(53,224,208,.5);
  box-shadow:0 22px 58px rgba(53,224,208,.18),var(--shadow);
}
.price-card.featured:hover{transform:translateY(-18px)}
.price-badge{
  position:absolute;top:-13px;left:26px;
  padding:5px 14px;
  border-radius:999px;
  font-size:12px;font-weight:700;
  color:#04121A;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
}
.price-name{font-size:17px;font-weight:750;margin:0 0 6px;color:#F2F7FF}
.price-note{font-size:13.5px;color:var(--muted);margin:0 0 20px}
.price-value{display:flex;align-items:baseline;gap:6px;margin-bottom:22px}
.price-value .amount{font-size:2.2rem;font-weight:800;color:var(--brand);line-height:1}
.price-value .unit{font-size:14px;color:var(--muted)}
.price-list{list-style:none;padding:0;margin:0 0 26px;display:grid;gap:12px;flex:1}
.price-list li{display:flex;gap:10px;font-size:14.5px;color:#CFDCEE;align-items:flex-start}
.price-list i{color:var(--brand);margin-top:6px;font-size:12px}

/* ---------- news ---------- */
.news-lead{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:0;
  border-radius:var(--radius-xl);
  overflow:hidden;
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  transition:border-color .26s ease,transform .26s ease;
}
.news-lead:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.news-lead-media{position:relative;overflow:hidden;min-height:280px}
.news-lead-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.news-lead:hover .news-lead-media img{transform:scale(1.04)}
.news-lead-body{padding:30px 28px;display:flex;flex-direction:column;justify-content:center}
.news-lead-body h3{font-size:20px;font-weight:750;margin:12px 0 12px;line-height:1.6;color:#F2F7FF}
.news-lead-body p{margin:0 0 20px;font-size:14.5px;color:var(--muted)}
.news-meta{display:flex;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--muted)}
.news-meta .tag{
  padding:4px 12px;border-radius:999px;
  color:#9FF3EA;background:rgba(53,224,208,.1);
  border:1px solid rgba(53,224,208,.26);
}
.timeline{list-style:none;margin:0;padding:0;position:relative}
.timeline::before{
  content:"";position:absolute;left:9px;top:8px;bottom:8px;width:1px;
  background:linear-gradient(180deg,rgba(53,224,208,.5),rgba(139,92,246,.08));
}
.timeline li{position:relative;padding:0 0 20px 34px}
.timeline li:last-child{padding-bottom:0}
.timeline li::before{
  content:"";position:absolute;left:3px;top:9px;
  width:13px;height:13px;border-radius:50%;
  background:#0B1A2E;border:2px solid var(--brand);
  box-shadow:0 0 10px rgba(53,224,208,.6);
}
.timeline a{
  display:block;
  padding:16px 18px;
  border-radius:var(--radius-md);
  background:rgba(16,26,44,.42);
  border:1px solid var(--line);
  transition:all .24s ease;
}
.timeline a:hover{border-color:var(--line-strong);background:rgba(53,224,208,.08);transform:translateX(4px)}
.timeline h4{margin:0 0 8px;font-size:15.5px;font-weight:700;color:#EDF4FF;line-height:1.6}
.timeline p{margin:0 0 10px;font-size:14px;color:var(--muted);line-height:1.8}
.empty-state{
  padding:56px 24px;
  text-align:center;
  border-radius:var(--radius-xl);
  background:rgba(16,26,44,.4);
  border:1px dashed rgba(120,220,255,.24);
}
.empty-state i{font-size:34px;color:var(--muted);opacity:.7}
.empty-state p{margin:16px 0 0;color:var(--muted);font-size:15px}

/* ---------- faq ---------- */
.faq-accordion .accordion-item{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-md)!important;
  margin-bottom:14px;
  overflow:hidden;
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.faq-accordion .accordion-button{
  min-height:56px;
  padding:16px 20px;
  background:transparent;
  color:#EDF4FF;
  font-size:15.5px;
  font-weight:650;
  box-shadow:none;
  border-radius:var(--radius-md)!important;
}
.faq-accordion .accordion-button::after{
  content:"+";
  display:grid;place-items:center;
  width:26px;height:26px;
  border-radius:50%;
  background:rgba(53,224,208,.12);
  border:1px solid rgba(53,224,208,.3);
  color:var(--brand);
  font-size:16px;
  line-height:1;
  background-image:none;
  transition:transform .24s ease,background .24s ease;
}
.faq-accordion .accordion-button:not(.collapsed){
  color:#9FF3EA;
  background:rgba(53,224,208,.06);
}
.faq-accordion .accordion-button:not(.collapsed)::after{
  content:"×";
  transform:rotate(180deg);
  background:rgba(53,224,208,.2);
}
.faq-accordion .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)){
  border-color:rgba(53,224,208,.42);
  box-shadow:0 0 0 1px rgba(53,224,208,.14),0 14px 36px rgba(0,0,0,.4);
}
.faq-accordion .accordion-body{
  padding:4px 20px 22px;
  color:var(--muted);
  font-size:14.8px;
  line-height:1.9;
}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;
  padding:52px 44px;
  border-radius:var(--radius-xl);
  overflow:hidden;
  background:linear-gradient(135deg,rgba(53,224,208,.16),rgba(139,92,246,.16) 60%,rgba(16,26,44,.6));
  border:1px solid rgba(53,224,208,.34);
  box-shadow:0 24px 60px rgba(0,0,0,.45);
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(520px 240px at 88% 12%,rgba(53,224,208,.22),transparent 68%);
  pointer-events:none;
}
.cta-band h2{font-size:clamp(1.4rem,2.6vw,1.95rem);font-weight:800;margin:0 0 12px;color:#F4F9FF}
.cta-band p{margin:0 0 26px;color:#CBD9EC;font-size:15.5px;max-width:720px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:2}

/* ---------- footer ---------- */
.site-footer{
  margin-top:40px;
  padding:64px 0 30px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(6,12,23,.5),rgba(4,9,18,.92));
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand .brand-text strong{font-size:16px}
.footer-text{font-size:14px;color:var(--muted);line-height:1.9;max-width:340px}
.footer-title{
  font-size:15px;font-weight:750;color:#EDF4FF;
  margin:0 0 16px;letter-spacing:.4px;
}
.footer-links{list-style:none;padding:0;margin:0;display:grid;gap:11px}
.footer-links a{
  display:inline-flex;align-items:center;gap:8px;
  min-height:34px;
  font-size:14.5px;
  color:var(--muted);
}
.footer-links a:hover{color:var(--brand)}
.footer-links i{font-size:11px;color:rgba(53,224,208,.75)}
.footer-contact{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.footer-contact li{display:flex;gap:10px;font-size:14.5px;color:var(--muted);align-items:flex-start}
.footer-contact i{color:var(--brand);margin-top:6px;font-size:13px}
.footer-bottom{
  margin-top:44px;padding-top:22px;
  border-top:1px solid rgba(120,220,255,.1);
  display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(159,176,204,.82);
}

/* ---------- floating cta ---------- */
.float-cta{
  position:fixed;
  right:28px;bottom:28px;
  z-index:1035;
  display:flex;align-items:center;gap:14px;
  padding:12px 14px 12px 22px;
  border-radius:999px;
  background:rgba(10,18,32,.86);
  border:1px solid rgba(53,224,208,.34);
  box-shadow:0 18px 44px rgba(0,0,0,.5);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.float-cta span{font-size:13.5px;color:var(--muted)}
.float-cta .btn-main{min-height:44px;padding:10px 22px;font-size:14px}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .section{padding:76px 0}
  .bento{grid-template-columns:1fr}
  .bento-main{min-height:auto}
  .price-card.featured{transform:translateY(0)}
  .price-card.featured:hover{transform:translateY(-4px)}
}
@media (max-width:991.98px){
  .nav-search{display:none}
  .proof-grid{grid-template-columns:1fr 1fr}
  .price-grid{grid-template-columns:1fr;max-width:560px;margin:0 auto}
  .news-lead{grid-template-columns:1fr}
  .news-lead-media{min-height:220px}
  .hero{padding:56px 0 68px}
  .hero-card{margin-top:8px}
}
@media (max-width:767.98px){
  .container{padding-left:16px;padding-right:16px}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .brand-row{min-height:64px;gap:10px}
  .brand-mark{width:40px;height:40px;flex:0 0 40px;font-size:13px;border-radius:12px}
  .brand-text strong{font-size:15.5px}
  .brand-text span{font-size:11px;letter-spacing:1.1px}
  .brand-tools .btn-main{min-height:44px;padding:9px 16px;font-size:13.5px}
  .channel-scroll{min-height:48px;padding-right:14px}
  .channel-link{font-size:14px;padding:8px 14px}
  .hero-sub{font-size:15.5px}
  .bento-card{padding:24px 20px}
  .proof-grid{grid-template-columns:1fr}
  .cta-band{padding:34px 22px}
  .float-cta{
    left:12px;right:12px;bottom:12px;
    justify-content:space-between;
    padding:10px 12px 10px 16px;
    border-radius:18px;
  }
  .float-cta span{font-size:13px}
  .float-cta .btn-main{flex:0 0 auto}
  .site-footer{padding:52px 0 88px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:575.98px){
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .hero-points{gap:8px 16px}
  .demo-tab{flex:1 1 auto;text-align:center}
  .price-value .amount{font-size:1.9rem}
  .float-cta span{display:none}
  .float-cta{justify-content:flex-end;padding:9px}
  .float-cta .btn-main{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;transition-duration:.01ms!important}
}

/* roulang page: article */
:root{
  --c-primary:#35E0D0;
  --c-secondary:#8B5CF6;
  --c-accent:#F6B85C;
  --c-bg-1:#050B16;
  --c-bg-2:#0B1A2E;
  --c-glass:rgba(16,26,44,0.58);
  --c-glass-strong:rgba(20,33,55,0.78);
  --c-border:rgba(120,220,255,0.14);
  --c-border-hi:rgba(53,224,208,0.55);
  --c-text:#E8F0FF;
  --c-text-sub:#9FB0CC;
  --c-text-mute:#7C8CA8;
  --radius-sm:12px;
  --radius-md:18px;
  --radius-lg:24px;
  --radius-pill:999px;
  --shadow-card:0 16px 48px rgba(0,0,0,0.45);
  --shadow-glow:0 0 24px rgba(53,224,208,0.35);
  --space-section:88px;
  --container-max:1240px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:
    radial-gradient(900px 520px at 12% -6%, rgba(53,224,208,0.16), transparent 62%),
    radial-gradient(760px 480px at 92% 6%, rgba(139,92,246,0.15), transparent 60%),
    linear-gradient(180deg,var(--c-bg-1) 0%,#071223 46%,var(--c-bg-2) 100%);
  background-attachment:fixed;
  color:var(--c-text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:
    linear-gradient(rgba(120,220,255,0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,220,255,0.045) 1px, transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
  z-index:0;
}
a{color:inherit;text-decoration:none;transition:color .25s ease,opacity .25s ease;}
a:hover{color:var(--c-primary);}
img{max-width:100%;height:auto;display:block;}
button,input{font-family:inherit;}
ul{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4{font-weight:700;line-height:1.35;margin:0;letter-spacing:.2px;}
p{margin:0 0 1.1em;}
.container{max-width:var(--container-max);padding-left:20px;padding-right:20px;position:relative;z-index:2;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:6px;}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}

/* ============ header ============ */
.site-header{position:sticky;top:0;z-index:1030;backdrop-filter:blur(18px);background:rgba(5,11,22,0.72);border-bottom:1px solid var(--c-border);transition:background .3s ease,box-shadow .3s ease;}
.site-header.scrolled{background:rgba(6,13,26,0.9);box-shadow:0 10px 34px rgba(0,0,0,0.5);}
.brand-row{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:68px;}
.brand{display:flex;align-items:center;gap:12px;}
.brand-mark{width:44px;height:44px;flex:0 0 44px;border-radius:14px;display:grid;place-items:center;font-weight:800;font-size:15px;letter-spacing:.5px;color:#04121A;background:linear-gradient(135deg,var(--c-primary),var(--c-secondary));box-shadow:var(--shadow-glow);}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:16px;font-weight:800;color:var(--c-text);}
.brand-text span{font-size:12px;color:var(--c-text-sub);letter-spacing:.6px;}
.brand-tools{display:flex;align-items:center;gap:12px;}
.nav-search{display:flex;align-items:center;gap:8px;background:var(--c-glass);border:1px solid var(--c-border);border-radius:var(--radius-pill);padding:6px 14px;min-height:44px;}
.nav-search i{color:var(--c-text-mute);font-size:13px;}
.nav-search input{background:transparent;border:0;color:var(--c-text);font-size:14px;width:150px;outline:none;}
.nav-search input::placeholder{color:var(--c-text-mute);}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:var(--radius-pill);font-weight:600;font-size:15px;padding:11px 24px;min-height:44px;cursor:pointer;transition:transform .25s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease,color .25s ease;}
.btn-main{background:linear-gradient(135deg,var(--c-primary),var(--c-secondary));color:#04121A;box-shadow:var(--shadow-glow);}
.btn-main:hover{transform:translateY(-2px);color:#04121A;filter:brightness(1.08);box-shadow:0 0 32px rgba(53,224,208,0.5);}
.btn-main:active{transform:translateY(0);}
.btn-ghost{background:rgba(16,26,44,0.45);border-color:var(--c-border);color:var(--c-text);}
.btn-ghost:hover{background:rgba(53,224,208,0.12);border-color:var(--c-border-hi);color:var(--c-text);transform:translateY(-2px);}
.channel-row{border-top:1px solid var(--c-border);background:rgba(8,16,30,0.5);}
.channel-scroll{display:flex;align-items:center;gap:6px;overflow-x:auto;padding:0;scrollbar-width:none;}
.channel-scroll::-webkit-scrollbar{display:none;}
.channel-link{position:relative;display:inline-flex;align-items:center;gap:8px;white-space:nowrap;padding:14px 16px;min-height:48px;font-size:14.5px;color:var(--c-text-sub);border-radius:var(--radius-pill);}
.channel-link i{font-size:13px;}
.channel-link:hover{color:var(--c-text);background:rgba(53,224,208,0.08);}
.channel-link.active{color:var(--c-text);background:rgba(53,224,208,0.14);box-shadow:inset 0 -2px 0 var(--c-primary),0 0 18px rgba(53,224,208,0.22);}

/* ============ page hero ============ */
.page-hero{position:relative;padding:56px 0 44px;overflow:hidden;}
.page-hero::after{content:"";position:absolute;left:-10%;top:-40%;width:520px;height:520px;background:radial-gradient(circle,rgba(53,224,208,0.18),transparent 68%);pointer-events:none;}
.breadcrumb-line{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--c-text-mute);margin-bottom:18px;}
.breadcrumb-line a{color:var(--c-text-sub);}
.breadcrumb-line i{font-size:10px;}
.chip{display:inline-flex;align-items:center;gap:7px;padding:6px 14px;border-radius:var(--radius-pill);background:rgba(53,224,208,0.12);border:1px solid rgba(120,220,255,0.22);color:var(--c-primary);font-size:13px;font-weight:600;}
.chip-purple{background:rgba(139,92,246,0.14);border-color:rgba(139,92,246,0.3);color:#C4B5FD;}
.chip-amber{background:rgba(246,184,92,0.13);border-color:rgba(246,184,92,0.3);color:var(--c-accent);}
.article-h1{font-size:clamp(1.7rem,3.6vw,2.6rem);font-weight:800;margin:16px 0 18px;max-width:920px;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;color:var(--c-text-sub);font-size:14px;}
.article-meta span{display:inline-flex;align-items:center;gap:7px;}
.article-meta i{color:var(--c-primary);font-size:13px;}

/* ============ article layout ============ */
.article-section{padding:8px 0 var(--space-section);}
.article-shell{background:var(--c-glass);border:1px solid var(--c-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);padding:34px 38px;backdrop-filter:blur(20px);}
.article-body{max-width:800px;font-size:16.5px;line-height:1.95;color:#DCE7F7;}
.article-body h2{font-size:clamp(1.35rem,2.4vw,1.85rem);margin:2em 0 .8em;padding-left:16px;position:relative;color:var(--c-text);}
.article-body h2::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:5px;height:1.1em;border-radius:3px;background:linear-gradient(180deg,var(--c-primary),var(--c-secondary));}
.article-body h3{font-size:1.22rem;margin:1.7em 0 .7em;color:var(--c-text);}
.article-body p{margin:0 0 1.3em;}
.article-body a{color:var(--c-primary);border-bottom:1px dashed rgba(53,224,208,0.5);}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.4em;}
.article-body ul li,.article-body ol li{margin-bottom:.6em;position:relative;}
.article-body ul{list-style:none;padding-left:0;}
.article-body ul li{padding-left:24px;}
.article-body ul li::before{content:"";position:absolute;left:4px;top:.72em;width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,var(--c-primary),var(--c-secondary));}
.article-body ol{list-style:decimal;}
.article-body blockquote{margin:1.6em 0;padding:18px 22px;border-left:3px solid var(--c-primary);background:rgba(53,224,208,0.07);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:#CFE2F5;}
.article-body img{border-radius:var(--radius-md);margin:1.6em 0;border:1px solid var(--c-border);}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;overflow:hidden;border-radius:var(--radius-sm);}
.article-body th,.article-body td{border:1px solid var(--c-border);padding:12px 14px;text-align:left;}
.article-body th{background:rgba(53,224,208,0.1);color:var(--c-text);font-weight:600;}
.article-body td{color:var(--c-text-sub);}
.article-body code{background:rgba(139,92,246,0.16);border:1px solid rgba(139,92,246,0.28);color:#C4B5FD;padding:2px 7px;border-radius:6px;font-size:14px;}
.article-body pre{background:rgba(5,11,22,0.85);border:1px solid var(--c-border);border-radius:var(--radius-md);padding:18px;overflow-x:auto;}
.article-body pre code{background:none;border:0;color:#A5F3EC;}

/* empty state */
.empty-state{text-align:center;padding:64px 24px;}
.empty-state i{font-size:42px;color:var(--c-text-mute);margin-bottom:18px;display:block;}
.empty-state h2{font-size:1.4rem;margin-bottom:12px;}
.empty-state p{color:var(--c-text-sub);margin-bottom:22px;}

/* related */
.related-section{padding:0 0 var(--space-section);}
.section-head{margin-bottom:34px;}
.section-head h2{font-size:clamp(1.5rem,3vw,2.25rem);}
.section-head p{color:var(--c-text-sub);margin:12px 0 0;max-width:640px;}
.card-mod{display:flex;flex-direction:column;height:100%;background:var(--c-glass);border:1px solid var(--c-border);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-card);backdrop-filter:blur(18px);transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;}
.card-mod:hover{transform:translateY(-4px);border-color:var(--c-border-hi);box-shadow:0 22px 56px rgba(0,0,0,0.55);}
.card-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.card-mod:hover .card-thumb img{transform:scale(1.03);}
.card-body-mod{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.card-body-mod h3{font-size:1.08rem;margin-bottom:10px;}
.card-body-mod p{color:var(--c-text-sub);font-size:14.5px;line-height:1.8;margin-bottom:16px;flex:1;}
.card-foot{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-text-mute);border-top:1px solid var(--c-border);padding-top:14px;}
.card-foot .arrow{color:var(--c-primary);}
.back-link{display:inline-flex;align-items:center;gap:8px;color:var(--c-text-sub);font-size:14.5px;margin-top:8px;}
.back-link:hover{color:var(--c-primary);}

/* ============ floating cta ============ */
.float-cta{position:fixed;right:26px;bottom:26px;z-index:1040;display:none;}
.float-cta .pill{display:flex;align-items:center;gap:12px;padding:10px 12px 10px 20px;border-radius:var(--radius-pill);background:var(--c-glass-strong);border:1px solid var(--c-border);box-shadow:0 18px 44px rgba(0,0,0,0.55);backdrop-filter:blur(18px);}
.float-cta .pill span{font-size:14px;color:var(--c-text-sub);}
.mobile-cta{position:fixed;left:0;right:0;bottom:0;z-index:1040;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 16px;background:rgba(6,13,26,0.94);border-top:1px solid var(--c-border);backdrop-filter:blur(16px);}
.mobile-cta span{font-size:13.5px;color:var(--c-text-sub);}

/* ============ footer ============ */
.site-footer{margin-top:20px;background:rgba(5,11,22,0.86);border-top:1px solid var(--c-border);padding:56px 0 26px;position:relative;z-index:2;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-text{color:var(--c-text-sub);font-size:14.5px;line-height:1.85;margin:0;max-width:360px;}
.footer-title{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--c-text);}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:var(--c-text-sub);font-size:14.5px;display:inline-flex;align-items:center;gap:8px;min-height:auto;}
.footer-links a i{font-size:10px;color:var(--c-primary);}
.footer-links a:hover{color:var(--c-primary);}
.footer-contact li{display:flex;gap:10px;color:var(--c-text-sub);font-size:14.5px;margin-bottom:12px;line-height:1.7;}
.footer-contact i{color:var(--c-primary);margin-top:5px;font-size:13px;}
.footer-bottom{margin-top:38px;padding-top:20px;border-top:1px solid var(--c-border);display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;color:var(--c-text-mute);font-size:13.5px;}

/* ============ responsive ============ */
@media (min-width:1200px){
  .float-cta{display:block;}
  .mobile-cta{display:none;}
}
@media (max-width:1199.98px){
  :root{--space-section:72px;}
  .float-cta{display:none;}
  body{padding-bottom:78px;}
}
@media (max-width:991.98px){
  .article-shell{padding:26px 24px;}
  .nav-search{display:none;}
  .brand-row{min-height:62px;}
}
@media (max-width:767.98px){
  :root{--space-section:56px;}
  .article-body{font-size:16px;}
  .article-shell{padding:22px 18px;border-radius:var(--radius-md);}
  .brand-text span{display:none;}
  .brand-tools .btn{padding:10px 18px;font-size:14px;}
  .page-hero{padding:36px 0 30px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:575.98px){
  :root{--space-section:48px;}
  .container{padding-left:16px;padding-right:16px;}
  .brand-mark{width:40px;height:40px;flex:0 0 40px;font-size:13px;border-radius:12px;}
  .brand-text strong{font-size:15px;}
  .article-h1{font-size:1.55rem;}
  .channel-link{padding:13px 12px;font-size:13.5px;}
}

/* roulang page: category1 */
:root{
  --c-primary:#35E0D0;
  --c-primary-dim:rgba(53,224,208,.18);
  --c-secondary:#8B5CF6;
  --c-accent:#F6B85C;
  --bg-0:#050B16;
  --bg-1:#0B1A2E;
  --glass:rgba(16,26,44,.58);
  --glass-strong:rgba(18,30,52,.82);
  --line:rgba(120,220,255,.14);
  --line-strong:rgba(53,224,208,.42);
  --text:#E8F0FF;
  --text-dim:#9FB0CC;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --shadow:0 16px 48px rgba(0,0,0,.45);
  --shadow-soft:0 8px 24px rgba(0,0,0,.32);
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:
    radial-gradient(900px 520px at 8% -6%, rgba(53,224,208,.16), transparent 62%),
    radial-gradient(760px 480px at 96% 4%, rgba(139,92,246,.18), transparent 60%),
    linear-gradient(180deg,var(--bg-0) 0%,var(--bg-1) 100%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(120,220,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,220,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 0%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 0%,#000 0%,transparent 78%);
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .25s ease,border-color .25s ease,background-color .25s ease}
a:hover{color:var(--c-primary)}
h1,h2,h3,h4{margin:0 0 .6em;font-weight:800;line-height:1.32;letter-spacing:.2px}
p{margin:0 0 1.1em}
ul,ol{margin:0 0 1.1em;padding-left:1.2em}
li{margin-bottom:.5em}
button,input{font-family:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:6px}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding-left:22px;
  padding-right:22px;
}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:11px 26px;border-radius:999px;border:1px solid transparent;font-size:15px;font-weight:700;letter-spacing:.4px;cursor:pointer;transition:transform .22s ease,box-shadow .22s ease,background-color .22s ease,border-color .22s ease,color .22s ease}
.btn-main{background:linear-gradient(135deg,#35E0D0 0%,#8B5CF6 100%);color:#04101C;box-shadow:0 0 24px rgba(53,224,208,.35)}
.btn-main:hover{transform:translateY(-2px);color:#04101C;box-shadow:0 0 34px rgba(53,224,208,.55)}
.btn-main:active{transform:translateY(1px);box-shadow:0 0 16px rgba(53,224,208,.3)}
.btn-ghost{background:rgba(255,255,255,.03);border-color:var(--line);color:var(--text);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.btn-ghost:hover{background:var(--c-primary-dim);border-color:var(--line-strong);color:var(--text);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{min-height:42px;padding:8px 20px;font-size:14px}

/* ---------- 头部 ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:rgba(5,11,22,.72);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid var(--line);transition:background-color .3s ease,box-shadow .3s ease}
.site-header.is-scrolled{background:rgba(8,16,30,.92);box-shadow:0 10px 34px rgba(0,0,0,.5)}
.brand-row{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:70px}
.brand{display:inline-flex;align-items:center;gap:12px;min-height:44px}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:13px;font-size:15px;font-weight:800;letter-spacing:.5px;color:#04101C;background:linear-gradient(135deg,#35E0D0 0%,#8B5CF6 100%);box-shadow:0 0 20px rgba(53,224,208,.35);flex:none}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:17px;font-weight:800;color:var(--text);letter-spacing:.6px}
.brand-text span{font-size:12px;color:var(--text-dim);letter-spacing:2.6px}
.brand:hover .brand-text strong{color:var(--c-primary)}
.brand-tools{display:flex;align-items:center;gap:14px}
.nav-search{position:relative;display:flex;align-items:center}
.nav-search i{position:absolute;left:15px;font-size:13px;color:var(--text-dim);pointer-events:none}
.nav-search input{width:216px;min-height:44px;padding:9px 16px 9px 38px;border-radius:999px;border:1px solid var(--line);background:rgba(12,22,38,.72);color:var(--text);font-size:14px;transition:border-color .25s ease,box-shadow .25s ease,background-color .25s ease}
.nav-search input::placeholder{color:#7B8DA8}
.nav-search input:focus{outline:none;border-color:var(--line-strong);box-shadow:0 0 0 4px rgba(53,224,208,.12);background:rgba(12,22,38,.95)}

.channel-row{border-top:1px solid var(--line);background:rgba(8,16,30,.5)}
.channel-scroll{display:flex;align-items:center;gap:6px;height:52px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.channel-scroll::-webkit-scrollbar{display:none}
.channel-link{display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 18px;border-radius:999px;font-size:14.5px;font-weight:600;color:var(--text-dim);white-space:nowrap;border:1px solid transparent;transition:all .25s ease}
.channel-link i{font-size:12.5px;opacity:.85}
.channel-link:hover{color:var(--text);background:rgba(53,224,208,.1);border-color:var(--line)}
.channel-link.active{color:#04101C;background:linear-gradient(135deg,#35E0D0 0%,#8B5CF6 100%);box-shadow:0 0 20px rgba(53,224,208,.32)}
.channel-link.active:hover{color:#04101C}

/* ---------- 内页横幅 ---------- */
.page-banner{position:relative;padding:56px 0 48px;border-bottom:1px solid var(--line);overflow:hidden}
.page-banner::before{content:"";position:absolute;inset:0;background-image:linear-gradient(90deg,rgba(5,11,22,.94) 0%,rgba(5,11,22,.72) 52%,rgba(5,11,22,.5) 100%),url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;opacity:.92;z-index:-1}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-dim);margin-bottom:16px}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{opacity:.5}
.banner-tag{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:999px;border:1px solid var(--line);background:var(--glass);font-size:13px;color:var(--c-primary);letter-spacing:1px;margin-bottom:18px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.page-banner h1{font-size:clamp(2rem,5vw,3.2rem);max-width:900px;margin-bottom:14px}
.page-banner h1 em{font-style:normal;background:linear-gradient(120deg,#35E0D0 0%,#8B5CF6 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.banner-lead{max-width:780px;font-size:16.5px;color:var(--text-dim);margin-bottom:0}

/* ---------- 主布局：左粘性目录 + 右内容 ---------- */
.layout{padding:64px 0 80px;position:relative;z-index:1}
.toc-aside{position:sticky;top:150px}
.toc-card{background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px 20px;box-shadow:var(--shadow-soft);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px)}
.toc-title{font-size:14px;font-weight:800;letter-spacing:2px;color:var(--c-primary);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.toc-list{list-style:none;margin:0;padding:0}
.toc-list li{margin-bottom:4px}
.toc-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:44px;padding:9px 13px;border-radius:var(--r-sm);font-size:14.5px;color:var(--text-dim);border:1px solid transparent;transition:all .22s ease}
.toc-list a span.num{font-size:12px;font-weight:800;color:#6E82A0;letter-spacing:1px}
.toc-list a:hover{background:rgba(53,224,208,.1);color:var(--text);border-color:var(--line)}
.toc-list a.is-active{background:rgba(53,224,208,.14);color:var(--text);border-color:var(--line-strong);box-shadow:0 0 18px rgba(53,224,208,.16)}
.toc-tip{margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);font-size:13px;color:var(--text-dim);line-height:1.8}

.section-block{margin-bottom:64px;scroll-margin-top:150px}
.section-block:last-child{margin-bottom:0}
.section-head{margin-bottom:26px}
.section-eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:3px;color:var(--c-accent);margin-bottom:10px}
.section-head h2{font-size:clamp(1.5rem,3vw,2.05rem);margin-bottom:12px}
.section-head p{color:var(--text-dim);max-width:760px;margin-bottom:0}

.panel{background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px 26px;box-shadow:var(--shadow-soft);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}
.panel p:last-child{margin-bottom:0}

/* 核心要点 */
.point-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.point-card{background:var(--glass);border:1px solid var(--line);border-radius:var(--r-md);padding:22px 20px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.point-card:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:0 14px 38px rgba(0,0,0,.42)}
.point-card .ico{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:13px;margin-bottom:14px;font-size:17px;color:var(--c-primary);background:rgba(53,224,208,.12);border:1px solid var(--line)}
.point-card h3{font-size:1.08rem;margin-bottom:8px}
.point-card p{font-size:14.5px;color:var(--text-dim);margin-bottom:0}

/* 图文块 */
.figure-block{display:grid;grid-template-columns:1.05fr .95fr;gap:26px;align-items:center;margin-top:24px}
.figure-block.reverse .figure-media{order:2}
.figure-media{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);background:rgba(10,18,32,.6)}
.figure-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;transition:transform .5s ease}
.figure-media:hover img{transform:scale(1.03)}
.figure-body h3{font-size:1.28rem;margin-bottom:10px}
.figure-body p{color:var(--text-dim);font-size:15px}
.check-list{list-style:none;padding:0;margin:0}
.check-list li{position:relative;padding-left:28px;font-size:15px;color:var(--text-dim);margin-bottom:10px}
.check-list li i{position:absolute;left:0;top:.42em;font-size:13px;color:var(--c-primary)}

/* 对比表 */
.table-wrap{overflow-x:auto;border-radius:var(--r-lg);border:1px solid var(--line);background:var(--glass);box-shadow:var(--shadow-soft);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}
table.compare{width:100%;min-width:720px;border-collapse:collapse;font-size:14.5px}
table.compare thead th{background:rgba(53,224,208,.1);color:var(--c-primary);font-weight:800;text-align:left;padding:16px 18px;white-space:nowrap;border-bottom:1px solid var(--line);letter-spacing:.6px}
table.compare tbody td{padding:16px 18px;border-bottom:1px solid rgba(120,220,255,.08);color:var(--text-dim);vertical-align:top}
table.compare tbody tr:last-child td{border-bottom:0}
table.compare tbody tr:hover td{background:rgba(53,224,208,.05);color:var(--text)}
table.compare td:first-child{color:var(--text);font-weight:700}
.badge-soft{display:inline-block;padding:3px 12px;border-radius:999px;font-size:12.5px;font-weight:700;color:var(--c-primary);background:rgba(53,224,208,.12);border:1px solid var(--line)}
.badge-warm{color:var(--c-accent);background:rgba(246,184,92,.12);border-color:rgba(246,184,92,.3)}
.badge-purple{color:#C4B5FD;background:rgba(139,92,246,.16);border-color:rgba(139,92,246,.34)}

/* FAQ */
.accordion-item{background:var(--glass)!important;border:1px solid var(--line)!important;border-radius:var(--r-md)!important;margin-bottom:12px;overflow:hidden;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);transition:border-color .25s ease,box-shadow .25s ease}
.accordion-item:has(.accordion-button:not(.collapsed)){border-color:var(--line-strong)!important;box-shadow:0 0 26px rgba(53,224,208,.16)}
.accordion-button{background:transparent!important;color:var(--text)!important;font-size:15.8px;font-weight:700;padding:19px 22px;box-shadow:none!important;gap:14px}
.accordion-button:not(.collapsed){color:var(--c-primary)!important}
.accordion-button::after{content:"+";background-image:none!important;display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;font-size:19px;font-weight:400;line-height:1;color:var(--c-primary);border:1px solid var(--line-strong);border-radius:50%;transform:none;transition:transform .25s ease,background-color .25s ease}
.accordion-button:not(.collapsed)::after{content:"×";transform:rotate(180deg);background:rgba(53,224,208,.14)}
.accordion-body{padding:2px 22px 20px;color:var(--text-dim);font-size:14.8px;line-height:1.9}
.accordion-body p:last-child{margin-bottom:0}

/* CTA 区块 */
.cta-block{position:relative;overflow:hidden;border-radius:var(--r-lg);border:1px solid var(--line-strong);background:linear-gradient(135deg,rgba(53,224,208,.16) 0%,rgba(139,92,246,.2) 100%),rgba(10,18,32,.72);padding:44px 34px;text-align:center;box-shadow:var(--shadow)}
.cta-block::after{content:"";position:absolute;width:320px;height:320px;right:-90px;top:-120px;border-radius:50%;background:radial-gradient(circle,rgba(53,224,208,.34),transparent 66%);pointer-events:none}
.cta-block h2{font-size:clamp(1.5rem,3vw,2.05rem);position:relative;z-index:1}
.cta-block p{color:#CBD9EE;max-width:660px;margin:0 auto 26px;position:relative;z-index:1;font-size:15.5px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;position:relative;z-index:1}

/* 浮动 CTA */
.float-cta{position:fixed;right:26px;bottom:26px;z-index:1040;display:inline-flex;align-items:center;gap:12px;padding:10px 12px 10px 20px;border-radius:999px;background:rgba(11,20,36,.86);border:1px solid var(--line);box-shadow:0 16px 44px rgba(0,0,0,.55);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px)}
.float-cta .txt{font-size:13.5px;color:var(--text-dim);white-space:nowrap}
.mobile-cta{display:none}

/* 页脚 */
.site-footer{position:relative;z-index:1;margin-top:20px;padding:64px 0 26px;background:linear-gradient(180deg,rgba(6,12,24,.4) 0%,rgba(5,11,22,.96) 100%);border-top:1px solid var(--line)}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-title{font-size:15px;font-weight:800;color:var(--text);margin-bottom:16px;letter-spacing:1px}
.footer-text{font-size:14px;color:var(--text-dim);line-height:1.9}
.footer-links,.footer-contact{list-style:none;margin:0;padding:0}
.footer-links li,.footer-contact li{margin-bottom:11px}
.footer-links a{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--text-dim);min-height:32px}
.footer-links a i{font-size:11px;color:var(--c-primary);opacity:.8}
.footer-links a:hover{color:var(--c-primary);transform:translateX(2px)}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-dim)}
.footer-contact li i{margin-top:6px;font-size:12.5px;color:var(--c-primary)}
.footer-bottom{margin-top:38px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:#7B8DA8}

/* 响应式 */
@media (max-width:1199.98px){
  .toc-aside{position:static;margin-bottom:34px}
  .toc-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}
}
@media (max-width:991.98px){
  .figure-block{grid-template-columns:1fr}
  .figure-block.reverse .figure-media{order:0}
  .brand-text span{letter-spacing:2px}
}
@media (max-width:767.98px){
  body{font-size:15.5px;padding-bottom:74px}
  .nav-search{display:none}
  .brand-row{min-height:64px}
  .page-banner{padding:40px 0 34px}
  .layout{padding:44px 0 56px}
  .section-block{margin-bottom:48px;scroll-margin-top:120px}
  .point-grid{grid-template-columns:1fr}
  .panel{padding:22px 18px}
  .float-cta{display:none}
  .mobile-cta{display:flex;align-items:center;justify-content:space-between;gap:12px;position:fixed;left:0;right:0;bottom:0;z-index:1040;padding:12px 16px;background:rgba(8,15,28,.94);border-top:1px solid var(--line);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px)}
  .mobile-cta .txt{font-size:13px;color:var(--text-dim);line-height:1.5}
  .mobile-cta .btn{min-height:46px;padding:9px 20px;font-size:14px}
  .cta-block{padding:34px 20px}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px}
  .toc-list{grid-template-columns:1fr}
  .brand-text strong{font-size:15.5px}
  .cta-actions .btn{width:100%}
}

/* roulang page: category2 */
:root{
  --c-primary:#35E0D0;
  --c-primary-soft:rgba(53,224,208,.16);
  --c-secondary:#8B5CF6;
  --c-accent:#F6B85C;
  --bg-1:#050B16;
  --bg-2:#0B1A2E;
  --glass:rgba(16,26,44,.58);
  --glass-strong:rgba(20,32,54,.8);
  --border:rgba(120,220,255,.14);
  --border-hover:rgba(53,224,208,.45);
  --text:#E8F0FF;
  --text-2:#9FB0CC;
  --text-3:#7C8CA8;
  --radius-xl:24px;
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-card:0 16px 48px rgba(0,0,0,.45);
  --shadow-glow:0 0 24px rgba(53,224,208,.35);
  --maxw:1240px;
  --font-cn:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--bg-1);
  background-image:
    radial-gradient(920px 620px at 10% -6%, rgba(53,224,208,.16), transparent 62%),
    radial-gradient(820px 540px at 94% 6%, rgba(139,92,246,.15), transparent 64%),
    linear-gradient(180deg,#050B16 0%,#0B1A2E 100%);
  background-attachment:fixed;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(120,220,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,220,255,.045) 1px,transparent 1px);
  background-size:68px 68px;
  -webkit-mask-image:radial-gradient(circle at 50% 22%,#000 0%,transparent 78%);
  mask-image:radial-gradient(circle at 50% 22%,#000 0%,transparent 78%);
}
a{color:var(--c-primary);text-decoration:none;transition:color .25s ease,opacity .25s ease}
a:hover{color:#7FF3E7}
img{max-width:100%;height:auto;display:block}
button,input{font-family:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:6px}
h1,h2,h3,h4{font-weight:700;line-height:1.35;margin:0;letter-spacing:.2px}
p{margin:0}
.container{max-width:var(--maxw);padding-left:20px;padding-right:20px;position:relative;z-index:1}
main,header,footer{position:relative;z-index:1}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(5,11,22,.72);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{
  background:rgba(7,15,28,.9);
  border-bottom-color:var(--border);
  box-shadow:0 12px 34px rgba(0,0,0,.44);
}
.brand-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  min-height:70px;
}
.brand{display:flex;align-items:center;gap:12px;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-mark{
  width:44px;height:44px;
  flex:0 0 44px;
  display:grid;place-items:center;
  border-radius:14px;
  font-weight:800;
  font-size:15px;
  letter-spacing:.5px;
  color:#04121C;
  background:linear-gradient(135deg,var(--c-primary),var(--c-secondary));
  box-shadow:var(--shadow-glow);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:.4px}
.brand-text span{font-size:12.5px;color:var(--text-2);letter-spacing:.6px}
.brand-tools{display:flex;align-items:center;gap:12px}
.nav-search{
  position:relative;
  display:flex;align-items:center;
  height:44px;
  padding:0 14px;
  gap:9px;
  border-radius:999px;
  background:var(--glass);
  border:1px solid var(--border);
  transition:border-color .25s ease,box-shadow .25s ease;
}
.nav-search:focus-within{border-color:var(--border-hover);box-shadow:0 0 0 3px rgba(53,224,208,.12)}
.nav-search i{color:var(--text-3);font-size:14px}
.nav-search input{
  width:170px;
  border:0;background:transparent;outline:none;
  color:var(--text);font-size:14px;
}
.nav-search input::placeholder{color:var(--text-3)}
.channel-row{
  border-top:1px solid var(--border);
  background:rgba(8,16,30,.5);
}
.channel-scroll{
  display:flex;align-items:center;gap:6px;
  min-height:50px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.channel-scroll::-webkit-scrollbar{display:none}
.channel-link{
  position:relative;
  display:inline-flex;align-items:center;gap:8px;
  height:44px;
  padding:0 16px;
  border-radius:999px;
  font-size:14.5px;
  color:var(--text-2);
  white-space:nowrap;
  transition:color .25s ease,background .25s ease;
}
.channel-link i{font-size:13px;opacity:.85}
.channel-link:hover{color:var(--text);background:rgba(53,224,208,.08)}
.channel-link.active{
  color:#04121C;
  font-weight:700;
  background:linear-gradient(135deg,var(--c-primary),var(--c-secondary));
  box-shadow:0 0 20px rgba(53,224,208,.28);
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;
  padding:11px 22px;
  border-radius:999px;
  font-size:15px;
  font-weight:700;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
}
.btn:focus,.btn:focus-visible{box-shadow:0 0 0 2px rgba(53,224,208,.55)}
.btn-main{
  color:#04121C;
  background:linear-gradient(135deg,var(--c-primary),var(--c-secondary));
  box-shadow:var(--shadow-glow);
}
.btn-main:hover{color:#04121C;transform:translateY(-2px);box-shadow:0 0 34px rgba(53,224,208,.5)}
.btn-main:active{transform:translateY(0)}
.btn-ghost{
  color:var(--text);
  background:rgba(53,224,208,.06);
  border-color:var(--border);
  backdrop-filter:blur(10px);
}
.btn-ghost:hover{color:var(--text);background:rgba(53,224,208,.16);border-color:var(--border-hover);transform:translateY(-2px)}
.btn-sm{padding:8px 16px;font-size:14px;min-height:44px}

/* ============ 通用板块 ============ */
.section{padding:84px 0}
.section-tight{padding:56px 0}
.section-head{max-width:760px;margin-bottom:42px}
.section-head h2{font-size:clamp(1.5rem,3vw,2.25rem);margin-bottom:14px}
.section-head p{color:var(--text-2);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  margin-bottom:16px;
  border-radius:999px;
  font-size:13px;
  letter-spacing:.6px;
  color:var(--c-primary);
  background:rgba(53,224,208,.1);
  border:1px solid var(--border);
}
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--border),transparent);margin:0}
.glass{
  background:var(--glass);
  border:1px solid var(--border);
  border-radius:var(--radius-xl);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow-card);
}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;
  border-radius:999px;
  font-size:12.5px;
  color:var(--c-primary);
  background:rgba(53,224,208,.12);
  border:1px solid rgba(53,224,208,.24);
}
.tag-warm{color:var(--c-accent);background:rgba(246,184,92,.12);border-color:rgba(246,184,92,.28)}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14.5px;font-weight:600;
  color:var(--c-primary);
}
.text-link i{transition:transform .25s ease}
.text-link:hover i{transform:translateX(4px)}

/* ============ 内页 Hero ============ */
.page-hero{
  position:relative;
  padding:72px 0 60px;
  overflow:hidden;
  background-image:linear-gradient(180deg,rgba(5,11,22,.55),rgba(5,11,22,.92)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
}
.page-hero::after{
  content:"";
  position:absolute;left:-8%;bottom:-40%;
  width:520px;height:520px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(53,224,208,.22),transparent 66%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.crumb{
  display:flex;align-items:center;gap:10px;
  font-size:13.5px;color:var(--text-3);
  margin-bottom:22px;
}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--c-primary)}
.page-hero h1{
  font-size:clamp(2rem,5vw,3.5rem);
  line-height:1.22;
  margin-bottom:20px;
  letter-spacing:.4px;
}
.page-hero h1 em{
  font-style:normal;
  background:linear-gradient(120deg,var(--c-primary),#9BE9FF 45%,var(--c-secondary));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-lead{
  max-width:720px;
  font-size:17px;
  color:var(--text-2);
  line-height:1.9;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-metrics{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:16px;
  margin-top:40px;
}
.metric{
  padding:20px 22px;
  border-radius:var(--radius-lg);
  background:var(--glass);
  border:1px solid var(--border);
  backdrop-filter:blur(16px);
}
.metric strong{display:block;font-size:26px;font-weight:800;color:var(--c-primary);line-height:1.2}
.metric span{font-size:13.5px;color:var(--text-2)}

/* ============ 标签条 ============ */
.topic-tabs{
  position:sticky;
  top:120px;
  z-index:20;
  padding:14px 0;
  margin-top:-30px;
}
.topic-tabs-inner{
  display:flex;gap:8px;
  padding:10px;
  border-radius:999px;
  background:var(--glass-strong);
  border:1px solid var(--border);
  backdrop-filter:blur(18px);
  box-shadow:var(--shadow-card);
  overflow-x:auto;
  scrollbar-width:none;
}
.topic-tabs-inner::-webkit-scrollbar{display:none}
.topic-tab{
  display:inline-flex;align-items:center;gap:8px;
  min-height:44px;
  padding:0 18px;
  border-radius:999px;
  font-size:14.5px;
  color:var(--text-2);
  white-space:nowrap;
  transition:color .25s ease,background .25s ease;
}
.topic-tab:hover{color:var(--text);background:rgba(53,224,208,.1)}
.topic-tab.active{
  color:#04121C;
  font-weight:700;
  background:linear-gradient(135deg,var(--c-primary),var(--c-secondary));
  box-shadow:0 0 18px rgba(53,224,208,.3);
}

/* ============ 横向滚动卡片 ============ */
.scroll-cards{
  display:grid;
  grid-auto-flow:column;
  grid-auto-columns:minmax(300px,340px);
  gap:20px;
  overflow-x:auto;
  padding:6px 4px 22px;
  scroll-snap-type:x mandatory;
  scrollbar-width:thin;
  scrollbar-color:rgba(53,224,208,.4) transparent;
}
.scroll-cards::-webkit-scrollbar{height:8px}
.scroll-cards::-webkit-scrollbar-track{background:rgba(120,220,255,.06);border-radius:999px}
.scroll-cards::-webkit-scrollbar-thumb{background:rgba(53,224,208,.38);border-radius:999px}
.info-card{
  scroll-snap-align:start;
  display:flex;flex-direction:column;
  border-radius:var(--radius-xl);
  background:var(--glass);
  border:1px solid var(--border);
  backdrop-filter:blur(18px);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.info-card:hover{
  transform:translateY(-4px);
  border-color:var(--border-hover);
  box-shadow:0 20px 52px rgba(0,0,0,.5),0 0 0 1px rgba(53,224,208,.16);
}
.card-media{position:relative;overflow:hidden;aspect-ratio:16/9;background:rgba(9,18,32,.8)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.info-card:hover .card-media img{transform:scale(1.03)}
.card-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,11,22,.05),rgba(5,11,22,.72));
}
.card-body{display:flex;flex-direction:column;gap:12px;padding:22px 22px 24px;flex:1}
.card-body h3{font-size:1.2rem}
.card-body p{font-size:14.5px;color:var(--text-2);line-height:1.8}
.card-body .text-link{margin-top:auto}

/* ============ 分栏图文 ============ */
.split-block{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:48px;
  align-items:center;
}
.split-figure{
  position:relative;
  border-radius:var(--radius-xl);
  overflow:hidden;
  border:1px solid var(--border);
  box-shadow:var(--shadow-card);
}
.split-figure img{width:100%;height:auto;object-fit:cover}
.split-figure::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(200deg,rgba(53,224,208,.14),transparent 52%);
}
.split-figure .float-chip{
  position:absolute;left:18px;bottom:18px;
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 16px;
  border-radius:999px;
  font-size:13.5px;
  color:var(--text);
  background:rgba(9,18,32,.78);
  border:1px solid var(--border);
  backdrop-filter:blur(12px);
}
.split-text h2{font-size:clamp(1.5rem,3vw,2.25rem);margin-bottom:18px}
.split-text p{color:var(--text-2);font-size:16px;margin-bottom:16px}
.check-list{list-style:none;padding:0;margin:22px 0 0;display:grid;gap:14px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text)}
.check-list li i{
  flex:0 0 26px;width:26px;height:26px;margin-top:3px;
  display:grid;place-items:center;
  border-radius:50%;
  font-size:12px;
  color:#04121C;
  background:linear-gradient(135deg,var(--c-primary),var(--c-secondary));
}
.check-list li span{color:var(--text-2)}
.check-list li strong{color:var(--text);font-weight:700}

/* ============ 流程 ============ */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;counter-reset:step}
.step-card{
  position:relative;
  padding:28px 22px 24px;
  border-radius:var(--radius-lg);
  background:var(--glass);
  border:1px solid var(--border);
  backdrop-filter:blur(16px);
  transition:transform .28s ease,border-color .28s ease;
}
.step-card:hover{transform:translateY(-4px);border-color:var(--border-hover)}
.step-num{
  width:38px;height:38px;
  display:grid;place-items:center;
  margin-bottom:16px;
  border-radius:12px;
  font-weight:800;
  font-size:15px;
  color:#04121C;
  background:linear-gradient(135deg,var(--c-primary),var(--c-secondary));
  box-shadow:0 0 18px rgba(53,224,208,.3);
}
.step-card h3{font-size:1.1rem;margin-bottom:10px}
.step-card p{font-size:14.5px;color:var(--text-2)}
.step-line{height:1px;background:linear-gradient(90deg,rgba(53,224,208,.5),transparent);margin:22px 0 0}

/* ============ 证据 ============ */
.proof-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-bottom:24px}
.proof-stat{
  padding:26px 24px;
  border-radius:var(--radius-lg);
  background:linear-gradient(160deg,rgba(53,224,208,.1),rgba(139,92,246,.08));
  border:1px solid var(--border);
}
.proof-stat strong{display:block;font-size:30px;font-weight:800;color:var(--c-primary);line-height:1.15}
.proof-stat span{display:block;margin-top:8px;font-size:14px;color:var(--text-2)}
.quote-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.quote-card{
  display:flex;gap:16px;
  padding:24px;
  border-radius:var(--radius-lg);
  background:var(--glass);
  border:1px solid var(--border);
  backdrop-filter:blur(16px);
}
.quote-card .avatar{
  flex:0 0 48px;width:48px;height:48px;
  display:grid;place-items:center;
  border-radius:50%;
  font-weight:700;
  font-size:15px;
  color:#04121C;
  background:linear-gradient(135deg,var(--c-accent),var(--c-primary));
}
.quote-card p{font-size:14.8px;color:var(--text-2);line-height:1.85;margin-bottom:10px}
.quote-meta{font-size:13px;color:var(--text-3)}
.quote-meta strong{color:var(--text);font-weight:700;margin-right:8px}

/* ============ FAQ ============ */
.faq-accordion .accordion-item{
  background:var(--glass);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  margin-bottom:14px;
  overflow:hidden;
  backdrop-filter:blur(16px);
  transition:border-color .28s ease,box-shadow .28s ease;
}
.faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)){
  border-color:var(--border-hover);
  box-shadow:0 0 26px rgba(53,224,208,.16);
}
.faq-accordion .accordion-button{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;
  font-size:16.5px;
  font-weight:700;
  color:var(--text);
  background:transparent;
  border:0;
  box-shadow:none;
  text-align:left;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--c-primary);background:rgba(53,224,208,.06)}
.faq-accordion .accordion-button:focus{box-shadow:0 0 0 2px rgba(53,224,208,.35) inset}
.faq-accordion .accordion-button::after{display:none}
.faq-icon{
  flex:0 0 32px;width:32px;height:32px;
  display:grid;place-items:center;
  border-radius:50%;
  font-size:17px;
  font-weight:700;
  color:var(--c-primary);
  background:rgba(53,224,208,.12);
  border:1px solid rgba(53,224,208,.28);
  transition:transform .28s ease,background .28s ease,color .28s ease;
}
.faq-icon::before{content:"+"}
.accordion-button:not(.collapsed) .faq-icon{
  color:#04121C;
  background:linear-gradient(135deg,var(--c-primary),var(--c-secondary));
  transform:rotate(180deg);
}
.accordion-button:not(.collapsed) .faq-icon::before{content:"×"}
.faq-accordion .accordion-body{
  padding:0 22px 22px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.9;
}

/* ============ CTA ============ */
.cta-panel{
  position:relative;
  padding:52px 46px;
  border-radius:28px;
  overflow:hidden;
  background-image:linear-gradient(120deg,rgba(5,11,22,.86),rgba(11,26,46,.72)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border:1px solid var(--border);
  box-shadow:var(--shadow-card);
}
.cta-panel::after{
  content:"";
  position:absolute;right:-10%;top:-40%;
  width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(139,92,246,.28),transparent 66%);
  pointer-events:none;
}
.cta-panel h2{font-size:clamp(1.5rem,3vw,2.25rem);margin-bottom:16px}
.cta-panel p{max-width:640px;color:var(--text-2);font-size:16px;margin-bottom:26px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:2}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:20px;
  padding:64px 0 28px;
  background:linear-gradient(180deg,rgba(5,11,22,.4),rgba(4,9,18,.96));
  border-top:1px solid var(--border);
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-text{font-size:14.5px;color:var(--text-2);line-height:1.85;max-width:360px}
.footer-title{font-size:15.5px;margin-bottom:18px;color:var(--text)}
.footer-links,.footer-contact{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.footer-links a{
  display:inline-flex;align-items:center;gap:9px;
  min-height:34px;
  font-size:14.5px;color:var(--text-2);
}
.footer-links a i{font-size:11px;color:var(--c-primary);opacity:.8}
.footer-links a:hover{color:var(--c-primary)}
.footer-contact li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2)}
.footer-contact li i{color:var(--c-primary);margin-top:6px;font-size:13px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
  margin-top:44px;padding-top:22px;
  border-top:1px solid var(--border);
  font-size:13.5px;color:var(--text-3);
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;
  right:24px;bottom:24px;
  z-index:1040;
}
.float-cta-inner{
  display:flex;align-items:center;gap:16px;
  padding:12px 12px 12px 22px;
  border-radius:999px;
  background:var(--glass-strong);
  border:1px solid var(--border);
  backdrop-filter:blur(18px);
  box-shadow:0 18px 44px rgba(0,0,0,.5);
}
.float-cta-text{font-size:14px;color:var(--text-2);white-space:nowrap}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .scroll-cards{grid-auto-columns:minmax(280px,320px)}
  .split-block{gap:36px}
}
@media (max-width:992px){
  .topic-tabs{position:static;margin-top:16px}
  .split-block{grid-template-columns:1fr;gap:30px}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .proof-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .hero-metrics{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:768px){
  .section{padding:60px 0}
  .page-hero{padding:52px 0 44px}
  .nav-search{display:none}
  .brand-row{min-height:64px}
  .channel-scroll{min-height:48px}
  .hero-metrics{grid-template-columns:1fr;gap:12px}
  .proof-grid{grid-template-columns:1fr}
  .quote-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .cta-panel{padding:36px 24px}
  .float-cta{
    right:0;left:0;bottom:0;
    padding:10px 12px;
    background:rgba(5,11,22,.92);
    border-top:1px solid var(--border);
    backdrop-filter:blur(16px);
  }
  .float-cta-inner{
    width:100%;
    justify-content:space-between;
    border-radius:16px;
    padding:8px 8px 8px 14px;
  }
  .float-cta-text{font-size:13px;white-space:normal}
  body{padding-bottom:84px}
}
@media (max-width:576px){
  .container{padding-left:16px;padding-right:16px}
  .brand-text strong{font-size:15.5px}
  .brand-text span{font-size:11.5px}
  .page-hero h1{font-size:clamp(1.7rem,7vw,2.2rem)}
  .hero-lead{font-size:15.5px}
  .scroll-cards{grid-auto-columns:minmax(258px,84vw)}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}