/* roulang page: index */
:root{
  --bg-0:#060B17;
  --bg-1:#081122;
  --bg-2:#0D1730;
  --accent:#4EC9FF;
  --accent-2:#3EE0C4;
  --blue:#2F6BFF;
  --gold:#F7C873;
  --text:#F5F9FF;
  --body:rgba(225,235,250,.82);
  --muted:rgba(225,235,250,.58);
  --glass:rgba(15,27,53,.55);
  --glass-2:rgba(19,34,64,.72);
  --line:rgba(255,255,255,.12);
  --line-hover:rgba(255,255,255,.28);
  --r-lg:22px;
  --r-md:14px;
  --r-sm:9px;
  --r-pill:999px;
  --glow:0 0 24px rgba(78,201,255,.25);
  --glow-strong:0 0 28px 0 rgba(78,201,255,.5);
  --block:90px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--bg-0);
  color:var(--body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(900px 620px at 10% -6%, rgba(47,107,255,.30), transparent 62%),
    radial-gradient(780px 520px at 94% 6%, rgba(62,224,196,.16), transparent 64%),
    radial-gradient(1000px 720px at 50% 112%, rgba(78,201,255,.14), transparent 66%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  opacity:.35;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 30%, #000 0%, transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 30%, #000 0%, transparent 78%);
}
a{color:var(--accent);text-decoration:none;transition:color .25s ease}
a:hover{color:#8fe0ff}
img{max-width:100%;height:auto;display:block}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{color:var(--text);font-weight:700;letter-spacing:.2px;margin:0 0 14px}
p{margin:0 0 16px}
ul{margin:0;padding:0;list-style:none}
::selection{background:rgba(78,201,255,.32);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

/* ---------- 布局容器 ---------- */
.page-wrap{position:relative;z-index:1}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.block{padding:var(--block) 0;position:relative}
.block-tight{padding:64px 0}
.section-head{max-width:760px;margin:0 auto 48px;text-align:center}
.section-head h2{font-size:clamp(28px,3.2vw,44px);line-height:1.28;margin-bottom:14px}
.section-head p{color:var(--muted);margin:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:1.6px;
  color:var(--accent-2);
  text-transform:uppercase;
  padding:6px 14px;
  border:1px solid rgba(62,224,196,.32);
  border-radius:var(--r-pill);
  background:rgba(62,224,196,.08);
  margin-bottom:16px;
}
.grad-text{
  background:linear-gradient(100deg,#F5F9FF 8%,#4EC9FF 52%,#3EE0C4 96%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  padding:14px 0 6px;
}
.nav-shell{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:10px 14px 10px 18px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  background:rgba(9,18,36,.68);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:0 8px 30px rgba(3,8,20,.55), inset 0 1px 0 rgba(255,255,255,.08);
  transition:background .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.site-header.is-scrolled .nav-shell{
  background:rgba(6,12,26,.88);
  border-color:var(--line-hover);
  box-shadow:0 10px 34px rgba(3,8,20,.7), 0 0 22px rgba(78,201,255,.16);
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--blue),var(--accent-2));
  color:#04101f;font-size:16px;
  box-shadow:0 0 18px rgba(78,201,255,.42);
}
.brand-name{
  font-size:17px;font-weight:750;color:var(--text);letter-spacing:.4px;white-space:nowrap;
}
.nav-menu{display:flex;align-items:center;gap:10px;flex:1;justify-content:flex-end}
.nav-list{display:flex;align-items:center;gap:4px}
.nav-link{
  display:inline-block;
  padding:9px 16px;
  border-radius:var(--r-pill);
  font-size:14.5px;
  color:var(--body);
  position:relative;
  transition:color .25s ease, background .25s ease;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.06)}
.nav-link.active{
  color:var(--text);
  background:rgba(78,201,255,.12);
  box-shadow:inset 0 0 0 1px rgba(78,201,255,.32);
}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:50%;bottom:3px;
  width:20px;height:2px;
  border-radius:2px;
  transform:translateX(-50%);
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  color:var(--text);
  cursor:pointer;
}
.nav-toggle:hover{border-color:var(--line-hover)}

/* ---------- 按钮 ---------- */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:650;
  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-glow{
  background:linear-gradient(120deg,var(--accent),var(--accent-2));
  color:#04101f;
  box-shadow:0 0 22px rgba(78,201,255,.35);
}
.btn-glow:hover{
  transform:translateY(-2px);
  box-shadow:var(--glow-strong);
  color:#04101f;
}
.btn-glow:active{transform:scale(.98)}
.btn-ghost{
  background:rgba(255,255,255,.05);
  border-color:var(--line);
  color:var(--text);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.btn-ghost:hover{
  border-color:var(--line-hover);
  background:rgba(255,255,255,.1);
  color:var(--text);
  transform:translateY(-2px);
}
.btn-ghost:active{transform:scale(.98)}
.btn-sm{padding:10px 20px;font-size:14px}
.nav-cta{margin-left:6px}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  min-height:calc(100vh - 96px);
  display:flex;
  align-items:center;
  padding:70px 0 60px;
  overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  opacity:.34;
  z-index:-2;
}
.hero-mask{
  position:absolute;inset:0;
  z-index:-1;
  background:
    linear-gradient(180deg, rgba(6,11,23,.62) 0%, rgba(6,11,23,.88) 72%, var(--bg-0) 100%),
    radial-gradient(700px 480px at 78% 22%, rgba(47,107,255,.30), transparent 65%);
}
.hero-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:center;
}
.hero h1{
  font-size:clamp(38px,5vw,64px);
  font-weight:750;
  line-height:1.16;
  margin-bottom:20px;
}
.hero-sub{
  font-size:17px;
  color:var(--body);
  max-width:520px;
  margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px}
.trust-row{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:14px;
  padding-top:26px;
  border-top:1px solid var(--line);
}
.trust-item strong{
  display:block;
  font-size:26px;
  font-weight:750;
  color:var(--text);
  line-height:1.2;
}
.trust-item strong em{font-style:normal;color:var(--accent);font-size:15px;margin-left:2px}
.trust-item span{font-size:12.5px;color:var(--muted)}
.hero-visual{position:relative}
.glass-panel{
  position:relative;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:linear-gradient(160deg, var(--glass-2), var(--glass));
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:0 18px 44px rgba(3,8,20,.6), inset 0 1px 0 rgba(255,255,255,.1);
  overflow:hidden;
}
.glass-panel::before{
  content:"";
  position:absolute;
  top:0;left:0;right:40%;
  height:1px;
  background:linear-gradient(90deg, rgba(255,255,255,.55), transparent);
}
.hero-visual img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  box-shadow:0 22px 50px rgba(3,8,20,.65), 0 0 30px rgba(78,201,255,.18);
}
.hero-float{
  position:absolute;
  left:-18px;bottom:-22px;
  padding:16px 20px;
  border-radius:var(--r-md);
  min-width:190px;
}
.hero-float b{color:var(--text);font-size:15px;display:block;margin-bottom:4px}
.hero-float span{font-size:12.5px;color:var(--muted)}
.hero-badge{
  position:absolute;top:18px;right:18px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  font-size:12.5px;
  color:#0b1a2e;
  background:var(--gold);
  font-weight:650;
  box-shadow:0 0 18px rgba(247,200,115,.4);
}

/* ---------- 卡片系统 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}
.card-x{
  position:relative;
  padding:28px 24px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(160deg, var(--glass-2), var(--glass));
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  transition:transform .28s ease, border-color .28s ease, box-shadow .28s ease;
  height:100%;
  overflow:hidden;
}
.card-x::before{
  content:"";
  position:absolute;
  top:0;left:0;right:55%;
  height:1px;
  background:linear-gradient(90deg, rgba(255,255,255,.5), transparent);
}
.card-x:hover{
  transform:translateY(-3px);
  border-color:var(--line-hover);
  box-shadow:var(--glow);
}
.card-ico{
  width:48px;height:48px;
  border-radius:14px;
  display:grid;place-items:center;
  font-size:19px;
  color:var(--accent);
  background:rgba(78,201,255,.1);
  border:1px solid rgba(78,201,255,.24);
  margin-bottom:18px;
}
.card-x h3{font-size:19px;font-weight:650;margin-bottom:10px}
.card-x h3 a{color:var(--text)}
.card-x h3 a:hover{color:var(--accent)}
.card-x p{font-size:14.5px;color:var(--muted);margin-bottom:16px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.tag{
  font-size:12px;
  padding:4px 11px;
  border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.06);
  color:var(--body);
}
.tag-gold{border-color:rgba(247,200,115,.4);background:rgba(247,200,115,.1);color:var(--gold)}
.link-more{
  display:inline-flex;align-items:center;gap:7px;
  font-size:14px;font-weight:600;color:var(--accent);
}
.link-more:hover{gap:11px}
.link-more i{transition:transform .25s ease}

/* ---------- 使用场景 ---------- */
.scene-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:52px;
  align-items:center;
}
.scene-list{display:flex;flex-direction:column;gap:20px;margin-top:26px}
.scene-item{
  display:flex;
  gap:16px;
  padding:20px 22px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:rgba(15,27,53,.45);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  transition:border-color .28s ease, transform .28s ease, box-shadow .28s ease;
}
.scene-item:hover{
  border-color:var(--line-hover);
  transform:translateX(4px);
  box-shadow:var(--glow);
}
.scene-num{
  flex:0 0 40px;
  width:40px;height:40px;
  border-radius:12px;
  display:grid;place-items:center;
  font-weight:750;
  color:#04101f;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
}
.scene-item h3{font-size:16.5px;margin-bottom:6px}
.scene-item p{font-size:14px;color:var(--muted);margin:0}
.scene-media{position:relative}
.scene-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  box-shadow:0 20px 46px rgba(3,8,20,.6);
}
.scene-media .glass-mini{
  position:absolute;
  right:-16px;top:34px;
  width:210px;
  padding:16px 18px;
  border-radius:var(--r-md);
}
.glass-mini b{display:block;color:var(--text);font-size:14.5px;margin-bottom:6px}
.glass-mini span{font-size:12.5px;color:var(--muted);line-height:1.65;display:block}

/* ---------- 数据与反馈 ---------- */
.case-grid{
  display:grid;
  grid-template-columns:1.15fr 1fr;
  gap:30px;
  align-items:stretch;
}
.stat-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.stat-card{
  padding:24px 20px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:linear-gradient(160deg, rgba(19,34,64,.7), rgba(15,27,53,.5));
}
.stat-card b{
  display:block;
  font-size:32px;
  font-weight:750;
  color:var(--text);
  line-height:1.1;
  margin-bottom:6px;
}
.stat-card b em{font-style:normal;font-size:15px;color:var(--accent-2);margin-left:2px}
.stat-card span{font-size:13px;color:var(--muted)}
.rating-bar{
  margin-top:22px;
  padding:20px 22px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:rgba(15,27,53,.5);
}
.rating-line{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.rating-line:last-child{margin-bottom:0}
.rating-line span{font-size:13px;color:var(--muted);flex:0 0 96px}
.rating-track{flex:1;height:8px;border-radius:var(--r-pill);background:rgba(255,255,255,.08);overflow:hidden}
.rating-fill{height:100%;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--blue),var(--accent))}
.quote-list{display:flex;flex-direction:column;gap:18px}
.quote-card{
  padding:24px 24px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(160deg, var(--glass-2), var(--glass));
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  transition:border-color .28s ease, transform .28s ease;
}
.quote-card:hover{border-color:var(--line-hover);transform:translateY(-3px)}
.quote-card p{font-size:14.5px;color:var(--body);margin-bottom:16px}
.quote-user{display:flex;align-items:center;gap:12px}
.avatar{
  width:38px;height:38px;border-radius:50%;
  display:grid;place-items:center;
  font-size:14px;font-weight:700;color:#04101f;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
}
.quote-user b{display:block;font-size:14px;color:var(--text);font-weight:600}
.quote-user span{font-size:12px;color:var(--muted)}

/* ---------- 价格方案 ---------- */
.price-toggle{
  display:inline-flex;
  padding:5px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(15,27,53,.6);
  margin-bottom:44px;
}
.price-toggle button{
  border:0;
  background:transparent;
  color:var(--muted);
  padding:9px 22px;
  border-radius:var(--r-pill);
  font-size:14px;
  cursor:pointer;
  transition:background .25s ease, color .25s ease;
}
.price-toggle button.on{
  background:linear-gradient(120deg,var(--accent),var(--accent-2));
  color:#04101f;
  font-weight:650;
}
.price-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;align-items:stretch}
.price-card{
  position:relative;
  display:flex;
  flex-direction:column;
  padding:32px 28px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(160deg, var(--glass-2), var(--glass));
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  transition:transform .28s ease, border-color .28s ease, box-shadow .28s ease;
}
.price-card:hover{transform:translateY(-4px);border-color:var(--line-hover)}
.price-card.featured{
  border-color:rgba(78,201,255,.5);
  box-shadow:0 0 30px rgba(78,201,255,.22), inset 0 0 0 1px rgba(78,201,255,.16);
  transform:translateY(-8px);
}
.price-card.featured:hover{transform:translateY(-12px)}
.price-badge{
  position:absolute;top:-13px;left:50%;transform:translateX(-50%);
  padding:5px 16px;
  border-radius:var(--r-pill);
  font-size:12.5px;
  font-weight:650;
  color:#0b1a2e;
  background:var(--gold);
  box-shadow:0 0 18px rgba(247,200,115,.4);
  white-space:nowrap;
}
.price-card h3{font-size:19px;margin-bottom:8px}
.price-card .price-desc{font-size:13.5px;color:var(--muted);margin-bottom:22px}
.price-num{
  display:flex;
  align-items:baseline;
  gap:4px;
  margin-bottom:24px;
}
.price-num b{font-size:44px;font-weight:750;color:var(--text);line-height:1}
.price-num i{font-style:normal;font-size:16px;color:var(--accent)}
.price-num span{font-size:14px;color:var(--muted);margin-left:4px}
.price-feat{flex:1;margin-bottom:26px}
.price-feat li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:14px;
  color:var(--body);
  padding:8px 0;
  border-bottom:1px dashed rgba(255,255,255,.08);
}
.price-feat li:last-child{border-bottom:0}
.price-feat i{color:var(--accent-2);font-size:13px;margin-top:5px}

/* ---------- CMS 最新信息 ---------- */
.cms-wrap{
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(160deg, rgba(19,34,64,.62), rgba(12,22,44,.55));
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  padding:14px;
}
.cms-list{display:grid;grid-template-columns:1fr;gap:14px}
.cms-item{
  padding:22px 24px;
  border-radius:var(--r-md);
  border:1px solid rgba(255,255,255,.08);
  background:rgba(10,19,38,.55);
  transition:border-color .28s ease, transform .28s ease, box-shadow .28s ease, background .28s ease;
}
.cms-item:hover{
  border-color:var(--line-hover);
  transform:translateY(-2px);
  box-shadow:var(--glow);
  background:rgba(15,27,53,.7);
}
.cms-meta{display:flex;align-items:center;gap:14px;margin-bottom:10px;flex-wrap:wrap}
.cms-meta time{font-size:12.5px;color:var(--muted)}
.cms-item h3{font-size:18px;margin-bottom:8px;line-height:1.5}
.cms-item h3 a{color:var(--text)}
.cms-item h3 a:hover{color:var(--accent)}
.cms-item p{font-size:14px;color:var(--muted);margin-bottom:12px}
.cms-empty{
  padding:44px 20px;
  text-align:center;
  color:var(--muted);
  border-radius:var(--r-md);
  border:1px dashed rgba(255,255,255,.16);
  background:rgba(255,255,255,.02);
  margin:0;
}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.accordion-item{
  border:1px solid var(--line)!important;
  border-radius:var(--r-md)!important;
  background:linear-gradient(160deg, rgba(19,34,64,.6), rgba(15,27,53,.48))!important;
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  overflow:hidden;
  transition:border-color .28s ease, box-shadow .28s ease;
}
.accordion-item:hover{border-color:var(--line-hover)!important}
.accordion-button{
  background:transparent!important;
  color:var(--text)!important;
  font-size:16px;
  font-weight:600;
  padding:20px 24px;
  box-shadow:none!important;
}
.accordion-button:not(.collapsed){color:var(--accent)!important}
.accordion-button::after{
  width:16px;height:16px;
  background-size:16px;
  filter:invert(78%) sepia(38%) saturate(1600%) hue-rotate(170deg) brightness(105%);
  transition:transform .28s ease;
}
.accordion-body{
  padding:0 24px 22px;
  color:var(--muted);
  font-size:14.5px;
  line-height:1.8;
  max-width:80ch;
}

/* ---------- CTA ---------- */
.cta-box{
  position:relative;
  border-radius:28px;
  border:1px solid var(--line);
  padding:56px 48px;
  overflow:hidden;
  background-image:linear-gradient(120deg, rgba(6,11,23,.9), rgba(9,20,42,.82)), url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  box-shadow:0 24px 60px rgba(3,8,20,.6);
}
.cta-box::after{
  content:"";
  position:absolute;
  right:-90px;top:-90px;
  width:280px;height:280px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(78,201,255,.32), transparent 66%);
}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.cta-inner h2{font-size:clamp(26px,3vw,38px);margin-bottom:14px}
.cta-inner p{color:var(--body);margin:0}
.form-row{display:flex;gap:12px;margin-top:20px;flex-wrap:wrap}
.form-input{
  flex:1 1 220px;
  min-width:0;
  padding:13px 18px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(6,12,26,.7);
  color:var(--text);
  transition:border-color .25s ease, box-shadow .25s ease;
}
.form-input::placeholder{color:rgba(225,235,250,.42)}
.form-input:focus{
  outline:none;
  border-color:rgba(78,201,255,.6);
  box-shadow:0 0 0 3px rgba(78,201,255,.16);
}
.form-hint{font-size:12.5px;color:var(--muted);margin-top:12px;margin-bottom:0}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:var(--block);
  padding:70px 0 28px;
  background:linear-gradient(180deg, rgba(6,11,23,0) 0%, #050A15 42%);
  border-top:1px solid rgba(255,255,255,.07);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-name{font-size:16px}
.footer-desc{font-size:13.5px;color:var(--muted);max-width:320px}
.footer-col h4{
  font-size:14.5px;
  color:var(--text);
  margin-bottom:16px;
  font-weight:650;
}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:13.5px;color:var(--muted)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:24px;
  font-size:12.5px;
  color:rgba(225,235,250,.45);
}
.footer-bottom a{color:rgba(225,235,250,.55)}
.footer-bottom a:hover{color:var(--accent)}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  :root{--block:70px}
  .hero-grid,.scene-grid,.case-grid,.cta-inner{grid-template-columns:1fr;gap:40px}
  .hero{min-height:auto;padding:50px 0 40px}
  .grid-3,.price-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero-float{left:12px;bottom:12px}
  .scene-media .glass-mini{right:12px;top:12px;width:190px}
}
@media (max-width:991.98px){
  .nav-toggle{display:grid;place-items:center}
  .nav-menu{
    position:absolute;
    left:0;right:0;
    top:calc(100% + 12px);
    flex-direction:column;
    align-items:stretch;
    gap:14px;
    padding:18px;
    border-radius:24px;
    border:1px solid var(--line);
    background:rgba(8,16,32,.94);
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
    box-shadow:0 20px 46px rgba(3,8,20,.7);
  }
  .nav-list{flex-direction:column;align-items:stretch;gap:6px}
  .nav-link{padding:13px 18px;border-radius:var(--r-md)}
  .nav-link.active::after{display:none}
  .nav-cta{margin-left:0;width:100%}
  .nav-shell{position:relative}
}
@media (min-width:992px){
  .nav-menu.collapse{display:flex!important}
}
@media (max-width:768px){
  :root{--block:56px}
  .container-x{padding:0 16px}
  .grid-3,.price-grid,.stat-grid{grid-template-columns:1fr}
  .trust-row{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
  .cta-box{padding:38px 24px;border-radius:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .nav-shell{padding:9px 12px}
  .brand-name{font-size:15.5px}
  .hero h1{font-size:clamp(30px,7.6vw,40px)}
  .price-card.featured{transform:none}
  .price-card.featured:hover{transform:translateY(-4px)}
  .scene-media .glass-mini{position:static;width:100%;margin-top:14px;right:auto;top:auto}
  .hero-float{position:static;margin-top:16px;width:100%}
}
@media (max-width:520px){
  .hero-actions .btn-x{width:100%}
  .form-row .btn-x{width:100%}
  .stat-card b{font-size:27px}
  .price-num b{font-size:38px}
  .card-x{padding:22px 18px}
  .cms-item{padding:18px 16px}
  .accordion-button{padding:16px 18px;font-size:15px}
  .accordion-body{padding:0 18px 18px}
}

/* roulang page: article */
:root{
  --bg-0:#060B17;
  --bg-1:#081122;
  --bg-2:#0D1730;
  --cyan:#4EC9FF;
  --mint:#3EE0C4;
  --blue:#2F6BFF;
  --gold:#F7C873;
  --text-1:#F5F9FF;
  --text-2:rgba(225,235,250,.82);
  --text-3:rgba(225,235,250,.58);
  --glass:rgba(15,27,53,.60);
  --glass-2:rgba(19,34,64,.74);
  --line:rgba(255,255,255,.12);
  --line-hi:rgba(255,255,255,.28);
  --r-lg:22px;
  --r-md:14px;
  --r-sm:9px;
  --pill:999px;
  --glow:0 0 24px rgba(78,201,255,.25);
  --glow-strong:0 0 32px rgba(78,201,255,.45);
  --shadow-soft:0 18px 42px rgba(3,8,20,.55);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:
    radial-gradient(1100px 620px at 12% -8%, rgba(47,107,255,.20), transparent 62%),
    radial-gradient(900px 560px at 92% 4%, rgba(62,224,196,.13), transparent 60%),
    radial-gradient(800px 700px at 50% 110%, rgba(78,201,255,.10), transparent 65%),
    linear-gradient(180deg,var(--bg-0) 0%, var(--bg-1) 45%, var(--bg-2) 100%);
  background-attachment:fixed;
  color:var(--text-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 25%, #000 0%, transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 25%, #000 0%, transparent 78%);
  z-index:0;
}
img{max-width:100%;display:block;}
a{color:var(--cyan);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--mint);}
button,input,textarea,select{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:700;letter-spacing:.2px;}
p{margin:0 0 16px;}
::selection{background:rgba(78,201,255,.32);color:#fff;}
.container-x{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 22px;
  position:relative;
  z-index:2;
}
.glass{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow-soft), inset 0 1px 0 rgba(255,255,255,.08);
}
/* ===== 导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  padding:14px 0 0;
  transition:padding .25s ease;
}
.site-header.is-scrolled{padding-top:8px;}
.nav-shell{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:10px 16px;
  border-radius:var(--pill);
  background:rgba(9,18,36,.55);
  border:1px solid var(--line);
  backdrop-filter:blur(20px) saturate(140%);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
  box-shadow:0 12px 34px rgba(3,8,20,.5), inset 0 1px 0 rgba(255,255,255,.09);
  transition:background .25s ease, box-shadow .25s ease;
}
.site-header.is-scrolled .nav-shell{
  background:rgba(6,12,26,.86);
  box-shadow:0 14px 40px rgba(3,8,20,.72), var(--glow);
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-1);font-weight:750;font-size:17px;letter-spacing:.4px;}
.brand:hover{color:var(--text-1);}
.brand-mark{
  width:34px;height:34px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(135deg, rgba(78,201,255,.9), rgba(47,107,255,.85));
  color:#04101f;
  font-size:15px;
  box-shadow:0 0 18px rgba(78,201,255,.45);
}
.brand-name{white-space:nowrap;}
.nav-toggle{
  display:inline-flex;
  align-items:center;justify-content:center;
  width:42px;height:38px;
  border-radius:12px;
  background:rgba(78,201,255,.10);
  border:1px solid var(--line);
  color:var(--text-1);
  cursor:pointer;
  transition:background .2s ease, border-color .2s ease;
}
.nav-toggle:hover{background:rgba(78,201,255,.2);border-color:var(--line-hi);}
.nav-list{display:flex;align-items:center;gap:8px;}
.nav-link{
  display:inline-block;
  padding:8px 14px;
  border-radius:var(--pill);
  color:var(--text-2);
  font-size:15px;
  position:relative;
  transition:color .2s ease, background .2s ease;
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.06);}
.nav-link.active{color:var(--text-1);background:rgba(78,201,255,.14);}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:50%;transform:translateX(-50%);
  bottom:2px;
  width:18px;height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--mint));
}
.nav-cta{white-space:nowrap;}
@media (min-width:992px){
  .nav-toggle{display:none;}
  .nav-menu.collapse{display:flex !important;align-items:center;justify-content:flex-end;gap:22px;flex:1 1 auto;}
}
@media (max-width:991.98px){
  .nav-shell{border-radius:20px;padding:10px 12px;}
  .nav-menu.collapse{width:100%;margin-top:10px;}
  .nav-list{flex-direction:column;align-items:stretch;gap:4px;}
  .nav-link{display:block;padding:11px 14px;border-radius:14px;}
  .nav-link.active::after{display:none;}
  .nav-link.active{border-left:2px solid var(--cyan);}
  .nav-cta{margin-top:10px;display:flex;justify-content:center;}
}
/* ===== 按钮 ===== */
.btn-x{
  display:inline-flex;
  align-items:center;justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--pill);
  font-size:15px;
  font-weight:650;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease, color .22s ease;
}
.btn-glow{
  background:linear-gradient(120deg,var(--cyan),var(--mint));
  color:#04101f;
  box-shadow:0 0 22px rgba(78,201,255,.35);
}
.btn-glow:hover{transform:translateY(-2px);box-shadow:0 0 30px rgba(78,201,255,.6);color:#04101f;}
.btn-glow:active{transform:scale(.98);}
.btn-ghost{
  background:rgba(255,255,255,.05);
  border-color:var(--line);
  color:var(--text-1);
}
.btn-ghost:hover{background:rgba(78,201,255,.14);border-color:var(--line-hi);transform:translateY(-2px);color:var(--text-1);}
.btn-ghost:active{transform:scale(.98);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-x:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}
/* ===== 文章头 ===== */
.page-hero{
  position:relative;
  padding:68px 0 54px;
  margin-top:18px;
  overflow:hidden;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(180deg, rgba(6,11,23,.72), rgba(8,17,34,.94)), url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  opacity:.55;
  z-index:0;
}
.page-hero::after{
  content:"";
  position:absolute;
  width:460px;height:460px;
  right:-120px;top:-160px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(78,201,255,.28), transparent 68%);
  filter:blur(10px);
  z-index:1;
}
.hero-inner{max-width:900px;position:relative;z-index:3;}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--text-3);
  margin-bottom:20px;
  position:relative;
  z-index:3;
}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--cyan);}
.crumb-sep{color:rgba(225,235,250,.28);}
.crumb-title{color:var(--text-2);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;
  border-radius:var(--pill);
  font-size:12.5px;
  letter-spacing:.6px;
  color:var(--cyan);
  background:rgba(78,201,255,.12);
  border:1px solid rgba(78,201,255,.32);
  margin-bottom:16px;
}
.page-title{
  font-size:clamp(28px,3.6vw,46px);
  line-height:1.28;
  font-weight:750;
  margin-bottom:16px;
  word-break:break-word;
}
.meta-row{
  display:flex;flex-wrap:wrap;gap:10px 24px;
  font-size:13.5px;
  color:var(--text-3);
  margin-bottom:18px;
}
.meta-row span{display:inline-flex;align-items:center;gap:8px;}
.meta-row i{color:var(--cyan);font-size:12.5px;}
.hero-lead{
  max-width:820px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--text-2);
  margin:0;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
/* ===== 文章主体 ===== */
.article-section{padding:56px 0 24px;position:relative;z-index:2;}
.article-panel{
  max-width:940px;
  margin:0 auto;
  padding:34px 38px 44px;
  border-radius:var(--r-lg);
}
.article-cover{
  margin:0 0 30px;
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--line);
  position:relative;
}
.article-cover img{width:100%;aspect-ratio:16/8;object-fit:cover;}
.article-body{
  max-width:820px;
  margin:0 auto;
  font-size:16px;
  line-height:1.82;
  color:var(--text-2);
  word-break:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 18px;}
.article-body h2{
  font-size:clamp(21px,2.3vw,27px);
  font-weight:700;
  margin:42px 0 16px;
  padding-left:16px;
  position:relative;
}
.article-body h2::before{
  content:"";
  position:absolute;left:0;top:.24em;bottom:.24em;width:4px;
  border-radius:4px;
  background:linear-gradient(180deg,var(--cyan),var(--mint));
}
.article-body h3{font-size:19px;font-weight:650;margin:30px 0 12px;}
.article-body h4{font-size:17px;margin:24px 0 10px;color:var(--text-2);font-weight:650;}
.article-body ul,.article-body ol{padding-left:22px;margin:0 0 18px;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:9px;}
.article-body li::marker{color:var(--cyan);}
.article-body a{color:var(--cyan);border-bottom:1px solid rgba(78,201,255,.35);}
.article-body a:hover{color:var(--mint);border-bottom-color:var(--mint);}
.article-body strong{color:var(--text-1);font-weight:700;}
.article-body blockquote{
  margin:26px 0;
  padding:16px 22px;
  border-left:3px solid var(--cyan);
  background:rgba(15,27,53,.62);
  border-radius:0 14px 14px 0;
  color:rgba(225,235,250,.9);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  max-width:100%;height:auto;
  border-radius:16px;
  border:1px solid var(--line);
  margin:22px auto;
}
.article-body code{
  background:rgba(78,201,255,.13);
  color:var(--cyan);
  padding:2px 7px;
  border-radius:6px;
  font-size:14px;
}
.article-body pre{
  background:rgba(6,11,23,.88);
  border:1px solid var(--line);
  border-radius:14px;
  padding:16px 18px;
  overflow:auto;
  margin:20px 0;
}
.article-body pre code{background:none;color:var(--text-2);padding:0;}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:22px 0;
  font-size:15px;
}
.article-body th,.article-body td{
  border:1px solid var(--line);
  padding:10px 13px;
  text-align:left;
}
.article-body th{background:rgba(78,201,255,.09);color:var(--text-1);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}
.empty-state{
  max-width:640px;
  margin:0 auto;
  text-align:center;
  padding:34px 10px 12px;
}
.empty-state i{
  font-size:30px;
  color:var(--cyan);
  margin-bottom:16px;
  display:block;
}
.empty-state h2{font-size:23px;margin-bottom:12px;}
.empty-state p{margin-bottom:24px;color:var(--text-3);}
/* ===== 继续阅读 ===== */
.next-section{padding:26px 0 12px;position:relative;z-index:2;}
.next-head{max-width:940px;margin:0 auto 22px;}
.next-head h2{font-size:clamp(21px,2.4vw,28px);margin-bottom:8px;}
.next-head p{color:var(--text-3);font-size:14.5px;margin:0;}
.next-grid{
  max-width:940px;
  margin:0 auto;
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:22px;
}
.next-card{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:24px 22px;
  border-radius:var(--r-md);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  transition:transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}
.next-card:hover{transform:translateY(-3px);border-color:var(--line-hi);box-shadow:var(--glow);}
.next-card .nc-icon{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:12px;
  background:rgba(78,201,255,.14);
  color:var(--cyan);
  font-size:16px;
}
.next-card h3{font-size:17.5px;line-height:1.45;}
.next-card p{font-size:14px;color:var(--text-3);margin:0;line-height:1.7;}
.next-card .nc-link{font-size:13.5px;color:var(--cyan);margin-top:auto;display:inline-flex;align-items:center;gap:6px;}
.next-card:hover .nc-link{color:var(--mint);}
/* ===== CTA ===== */
.cta-section{padding:72px 0 84px;position:relative;z-index:2;}
.cta-box{
  position:relative;
  overflow:hidden;
  border-radius:26px;
  padding:52px 44px;
  text-align:center;
  background:linear-gradient(130deg, rgba(47,107,255,.24), rgba(62,224,196,.14) 60%, rgba(15,27,53,.7));
  border:1px solid var(--line);
  box-shadow:var(--shadow-soft), inset 0 1px 0 rgba(255,255,255,.1);
}
.cta-box::before{
  content:"";
  position:absolute;
  width:420px;height:420px;
  left:-140px;top:-180px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(78,201,255,.32), transparent 66%);
}
.cta-box h2{font-size:clamp(23px,2.8vw,34px);margin-bottom:14px;position:relative;}
.cta-box p{max-width:660px;margin:0 auto 26px;color:var(--text-2);position:relative;font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;position:relative;}
/* ===== 页脚 ===== */
.site-footer{
  position:relative;
  background:linear-gradient(180deg, rgba(6,11,23,.55), rgba(4,8,17,.96));
  border-top:1px solid rgba(255,255,255,.08);
  padding:60px 0 26px;
  z-index:2;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:38px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-name{color:var(--text-1);font-weight:750;font-size:17px;}
.footer-desc{font-size:14px;color:var(--text-3);line-height:1.8;max-width:340px;margin:0;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text-1);}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:14px;color:var(--text-3);}
.footer-col ul li a:hover{color:var(--cyan);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  align-items:center;
  padding-top:22px;
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--cyan);}
@media (max-width:991.98px){
  .page-hero{padding:52px 0 42px;}
  .article-panel{padding:26px 24px 34px;}
  .next-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-box{padding:42px 26px;}
}
@media (max-width:767.98px){
  .container-x{padding:0 16px;}
  .page-hero{padding:40px 0 34px;}
  .crumb-title{max-width:100%;white-space:normal;}
  .hero-lead{-webkit-line-clamp:4;}
  .next-grid{grid-template-columns:1fr;}
  .article-body{font-size:15.5px;}
  .article-cover img{aspect-ratio:16/10;}
}
@media (max-width:520px){
  .brand-name{font-size:15.5px;}
  .article-panel{padding:22px 16px 30px;border-radius:18px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-actions .btn-x{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category1 */
:root{
  --bg-0:#060B17;
  --bg-1:#081122;
  --bg-2:#0D1730;
  --ink-1:#F5F9FF;
  --ink-2:rgba(225,235,250,.82);
  --ink-3:rgba(225,235,250,.58);
  --cyan:#3EE0C4;
  --blue:#4EC9FF;
  --elec:#2F6BFF;
  --gold:#F7C873;
  --glass:rgba(15,27,53,.55);
  --glass-2:rgba(19,34,64,.72);
  --line:rgba(255,255,255,.12);
  --line-strong:rgba(255,255,255,.28);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:10px;
  --glow:0 0 24px rgba(78,201,255,.25);
  --glow-strong:0 0 32px rgba(78,201,255,.5);
  --section-y:90px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-2);
  background:
    radial-gradient(1100px 620px at 10% -12%, rgba(47,107,255,.22), transparent 62%),
    radial-gradient(900px 520px at 90% 2%, rgba(62,224,196,.14), transparent 58%),
    linear-gradient(180deg,#060B17 0%, #081122 46%, #060B17 100%);
  -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(120,170,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,170,255,.05) 1px, transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(1000px 620px at 50% 0%, #000 28%, transparent 86%);
  mask-image:radial-gradient(1000px 620px at 50% 0%, #000 28%, transparent 86%);
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .25s ease}
ul{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{margin:0;color:var(--ink-1);font-weight:750;line-height:1.25;letter-spacing:.2px}
p{margin:0}
button,input{font:inherit}
::selection{background:rgba(78,201,255,.32);color:#fff}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:8px}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
.section{padding:var(--section-y) 0;position:relative;z-index:1}

/* ===== 顶部悬浮胶囊导航 ===== */
.site-header{position:sticky;top:0;z-index:60;padding:14px 0 6px;transition:padding .3s ease}
.site-header.scrolled{padding-top:8px}
.nav-shell{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:10px 12px 10px 18px;border-radius:999px;
  background:rgba(10,20,38,.62);
  border:1px solid var(--line);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:0 14px 40px rgba(3,8,20,.5);
  transition:background .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.site-header.scrolled .nav-shell{background:rgba(7,14,28,.86);border-color:var(--line-strong);box-shadow:0 18px 46px rgba(3,8,20,.7)}
.brand{display:flex;align-items:center;gap:10px;font-weight:750;color:var(--ink-1);font-size:17px;letter-spacing:.3px}
.brand-mark{
  width:34px;height:34px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(78,201,255,.9),rgba(62,224,196,.85));
  color:#04101f;font-size:15px;box-shadow:0 0 20px rgba(78,201,255,.45);
}
.brand-name{white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:22px;flex:1;justify-content:flex-end}
.nav-list{display:flex;align-items:center;gap:6px}
.nav-link{
  display:inline-block;padding:9px 14px;border-radius:999px;font-size:14.5px;
  color:var(--ink-2);position:relative;transition:color .25s ease, background .25s ease;
}
.nav-link:hover{color:var(--ink-1);background:rgba(255,255,255,.07)}
.nav-link.active{color:var(--blue);background:rgba(78,201,255,.12);box-shadow:inset 0 0 0 1px rgba(78,201,255,.3)}
.nav-link.active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:16px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--blue),var(--cyan));
}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.05);color:var(--ink-1);font-size:17px;align-items:center;justify-content:center;
  transition:background .25s ease,border-color .25s ease;
}
.nav-toggle:hover{background:rgba(78,201,255,.14);border-color:var(--line-strong)}

/* ===== 按钮 ===== */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:999px;font-size:15px;font-weight:650;letter-spacing:.4px;
  border:1px solid transparent;cursor:pointer;transition:transform .22s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease, color .25s ease;
}
.btn-x:active{transform:scale(.98)}
.btn-glow{
  background:linear-gradient(120deg,#4EC9FF 0%, #3EE0C4 100%);
  color:#05121f;box-shadow:0 0 22px rgba(78,201,255,.35);
}
.btn-glow:hover{transform:translateY(-2px);box-shadow:0 0 30px rgba(78,201,255,.55);color:#05121f}
.btn-ghost{
  background:rgba(255,255,255,.05);border-color:var(--line);color:var(--ink-1);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--line-strong);background:rgba(78,201,255,.12);color:#fff}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-lg{padding:14px 32px;font-size:16px}

/* ===== 分类页头部 ===== */
.cat-hero{padding:46px 0 0;position:relative;z-index:1}
.hero-panel{
  position:relative;overflow:hidden;border-radius:32px;
  border:1px solid var(--line);
  background-image:linear-gradient(115deg, rgba(6,11,23,.92) 12%, rgba(9,20,42,.78) 58%, rgba(6,11,23,.9) 100%), url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  padding:56px 52px 48px;
  box-shadow:0 30px 70px rgba(3,8,20,.6);
}
.hero-panel::after{
  content:"";position:absolute;width:420px;height:420px;right:-120px;top:-160px;border-radius:50%;
  background:radial-gradient(circle, rgba(62,224,196,.30), transparent 68%);
  pointer-events:none;
}
.hero-panel::before{
  content:"";position:absolute;width:360px;height:360px;left:-140px;bottom:-190px;border-radius:50%;
  background:radial-gradient(circle, rgba(47,107,255,.34), transparent 70%);
  pointer-events:none;
}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:20px;position:relative;z-index:1}
.crumbs a:hover{color:var(--blue)}
.crumbs span.sep{color:rgba(225,235,250,.3)}
.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:52px;align-items:center;position:relative;z-index:1}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  font-size:12.5px;letter-spacing:.6px;color:var(--cyan);
  background:rgba(62,224,196,.10);border:1px solid rgba(62,224,196,.28);margin-bottom:20px;
}
.hero-panel h1{font-size:clamp(34px,4.4vw,56px);font-weight:750;margin-bottom:18px}
.hero-panel h1 em{
  font-style:normal;
  background:linear-gradient(100deg,#4EC9FF 0%, #3EE0C4 62%, #F7C873 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:16.5px;color:var(--ink-2);max-width:640px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:6px 13px;border-radius:999px;
  font-size:12.5px;color:var(--ink-2);background:rgba(255,255,255,.05);
  border:1px solid var(--line);
}
.tag i{color:var(--cyan);font-size:11px}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:22px;
  border:1px solid var(--line-strong);box-shadow:0 24px 60px rgba(3,8,20,.65);
}
.hero-media .media-badge{
  position:absolute;left:-14px;bottom:22px;display:flex;align-items:center;gap:10px;
  padding:12px 18px;border-radius:16px;background:rgba(8,17,34,.88);
  border:1px solid var(--line-strong);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--glow);font-size:13px;color:var(--ink-1);
}
.hero-media .media-badge i{color:var(--gold)}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:44px;
  padding-top:30px;border-top:1px solid var(--line);position:relative;z-index:1;
}
.stat{display:flex;flex-direction:column;gap:4px}
.stat b{font-size:26px;font-weight:750;color:var(--ink-1);letter-spacing:.5px}
.stat b i{font-style:normal;font-size:14px;color:var(--cyan);margin-left:3px}
.stat span{font-size:13px;color:var(--ink-3)}

/* ===== 通用板块标题 ===== */
.section-head{max-width:760px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{font-size:clamp(26px,3vw,40px);margin-bottom:14px}
.section-head p{font-size:15.5px;color:var(--ink-2)}
.grad-line{width:62px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--blue),var(--cyan));margin-bottom:18px}
.section-head.center .grad-line{margin-left:auto;margin-right:auto}

/* ===== 玻璃卡片基础 ===== */
.glass{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  position:relative;overflow:hidden;
  transition:transform .28s ease, border-color .28s ease, box-shadow .28s ease;
}
.glass::before{
  content:"";position:absolute;left:16px;right:16px;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.45),transparent);
}
.glass:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--glow)}

/* ===== 介绍区 ===== */
.intro-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:start}
.intro-copy p+p{margin-top:18px}
.intro-copy p{font-size:15.8px;color:var(--ink-2)}
.anchor-panel{padding:28px 26px}
.anchor-panel h3{font-size:18px;margin-bottom:6px}
.anchor-panel .panel-note{font-size:13px;color:var(--ink-3);margin-bottom:18px}
.anchor-list li+li{margin-top:10px}
.anchor-list a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:13px 16px;border-radius:14px;font-size:14.5px;color:var(--ink-2);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  transition:background .25s ease,border-color .25s ease,color .25s ease,transform .25s ease;
}
.anchor-list a:hover{background:rgba(78,201,255,.12);border-color:rgba(78,201,255,.4);color:var(--ink-1);transform:translateX(3px)}
.anchor-list a i{color:var(--blue);font-size:13px}

/* ===== 图文并置 ===== */
.media-block{
  position:relative;overflow:hidden;border-radius:32px;border:1px solid var(--line);
  background-image:linear-gradient(90deg, rgba(6,11,23,.94) 0%, rgba(6,11,23,.7) 52%, rgba(6,11,23,.35) 100%), url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  padding:56px 52px;display:grid;grid-template-columns:1fr 380px;gap:44px;align-items:center;
  box-shadow:0 26px 64px rgba(3,8,20,.55);
}
.media-block h2{font-size:clamp(24px,2.7vw,36px);margin-bottom:16px}
.media-block p{font-size:15.5px;color:var(--ink-2);max-width:620px}
.media-block p+p{margin-top:14px}
.media-panel{padding:24px;border-radius:var(--r-lg);background:rgba(10,20,38,.72);border:1px solid var(--line-strong);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);box-shadow:var(--glow)}
.media-panel img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:14px;margin-bottom:16px}
.media-panel h4{font-size:16px;margin-bottom:8px}
.media-panel p{font-size:13.5px;color:var(--ink-3)}

/* ===== 功能细分卡片 ===== */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.f-card{padding:28px 26px;display:flex;flex-direction:column;gap:12px}
.f-icon{
  width:46px;height:46px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;
  font-size:18px;color:#04121f;background:linear-gradient(135deg,rgba(78,201,255,.92),rgba(62,224,196,.85));
  box-shadow:0 0 18px rgba(78,201,255,.32);
}
.f-card h3{font-size:19px}
.f-card h3 a:hover{color:var(--blue)}
.f-card p{font-size:14.6px;color:var(--ink-2);flex:1}
.f-card .mini-list li{font-size:13.4px;color:var(--ink-3);display:flex;gap:9px;align-items:flex-start;margin-top:8px}
.f-card .mini-list i{color:var(--cyan);font-size:11px;margin-top:6px}
.card-link{display:inline-flex;align-items:center;gap:7px;font-size:14px;color:var(--blue);font-weight:650}
.card-link:hover{gap:11px;color:var(--cyan)}
.badge-soft{
  display:inline-flex;align-items:center;padding:4px 11px;border-radius:8px;font-size:12px;
  color:var(--gold);background:rgba(247,200,115,.10);border:1px solid rgba(247,200,115,.3);
  align-self:flex-start;
}

/* ===== 使用流程 ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative}
.step{padding:26px 22px;border-radius:var(--r-md);background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);transition:border-color .28s ease,transform .28s ease,box-shadow .28s ease}
.step:hover{border-color:var(--line-strong);transform:translateY(-2px);box-shadow:var(--glow)}
.step-num{
  font-size:13px;font-weight:750;letter-spacing:1px;color:var(--cyan);
  display:inline-flex;align-items:center;gap:8px;margin-bottom:12px;
}
.step-num span{width:7px;height:7px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--cyan));box-shadow:0 0 10px rgba(78,201,255,.8)}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14px;color:var(--ink-3)}

/* ===== 对比区 ===== */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.compare-card{padding:32px 30px}
.compare-card.featured{border-color:rgba(78,201,255,.4);box-shadow:0 0 28px rgba(78,201,255,.22);background:var(--glass-2)}
.compare-card h3{font-size:20px;margin-bottom:8px;display:flex;align-items:center;gap:10px}
.compare-card h3 i{color:var(--cyan)}
.compare-card .sub{font-size:13.5px;color:var(--ink-3);margin-bottom:20px}
.compare-list li{display:flex;gap:11px;align-items:flex-start;font-size:14.6px;padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.09)}
.compare-list li:last-child{border-bottom:none}
.compare-list i{color:var(--blue);font-size:12px;margin-top:7px}

/* ===== FAQ ===== */
.faq-accordion{max-width:900px;margin:0 auto}
.faq-accordion .accordion-item{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:14px;overflow:hidden;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  transition:border-color .28s ease, box-shadow .28s ease;
}
.faq-accordion .accordion-item:hover{border-color:var(--line-strong);box-shadow:var(--glow)}
.faq-accordion .accordion-button{
  background:transparent;color:var(--ink-1);font-size:16px;font-weight:650;
  padding:20px 24px;box-shadow:none;display:flex;align-items:center;gap:16px;
}
.faq-accordion .accordion-button:not(.collapsed){
  color:var(--blue);background:linear-gradient(90deg, rgba(78,201,255,.12), transparent 70%);
  box-shadow:none;
}
.faq-accordion .accordion-button::after{display:none}
.faq-accordion .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq-chev{margin-left:auto;font-size:13px;color:var(--cyan);transition:transform .3s ease}
.faq-accordion .accordion-button:not(.collapsed) .faq-chev{transform:rotate(180deg)}
.faq-accordion .accordion-body{
  padding:0 24px 22px;font-size:15px;color:var(--ink-2);max-width:80ch;line-height:1.8;
}

/* ===== CTA ===== */
.cta-band{
  position:relative;overflow:hidden;border-radius:32px;border:1px solid var(--line-strong);
  background-image:linear-gradient(110deg, rgba(6,11,23,.94) 8%, rgba(11,24,50,.78) 62%, rgba(6,11,23,.9) 100%), url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;
  padding:56px 52px;text-align:center;box-shadow:0 30px 70px rgba(3,8,20,.6);
}
.cta-band::after{
  content:"";position:absolute;width:520px;height:520px;left:50%;top:-320px;transform:translateX(-50%);
  border-radius:50%;background:radial-gradient(circle, rgba(78,201,255,.28), transparent 68%);pointer-events:none;
}
.cta-band .tag{position:relative;z-index:1;margin-bottom:20px}
.cta-band h2{font-size:clamp(24px,2.9vw,38px);margin-bottom:16px;position:relative;z-index:1}
.cta-band p{max-width:720px;margin:0 auto 28px;font-size:15.6px;color:var(--ink-2);position:relative;z-index:1}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;position:relative;z-index:1}

/* ===== 页脚 ===== */
.site-footer{
  margin-top:var(--section-y);padding:64px 0 28px;position:relative;z-index:1;
  background:linear-gradient(180deg, rgba(6,11,23,0) 0%, rgba(4,9,20,.92) 34%, #040912 100%);
  border-top:1px solid var(--line);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px;padding-bottom:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-name{font-size:17px;font-weight:750;color:var(--ink-1)}
.footer-desc{font-size:14px;color:var(--ink-3);max-width:340px}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--ink-1)}
.footer-col li+li{margin-top:10px}
.footer-col a{font-size:14px;color:var(--ink-3)}
.footer-col a:hover{color:var(--blue)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding-top:24px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-3);
}
.footer-bottom a{color:var(--ink-2)}
.footer-bottom a:hover{color:var(--blue)}

/* ===== 响应式 ===== */
@media (max-width:1199.98px){
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991.98px){
  :root{--section-y:64px}
  .nav-toggle{display:inline-flex}
  .nav-menu{
    position:absolute;left:0;right:0;top:calc(100% + 12px);
    flex-direction:column;align-items:stretch;gap:14px;
    background:rgba(7,14,28,.97);border:1px solid var(--line-strong);border-radius:24px;
    padding:18px;backdrop-filter:blur(22px);-webkit-backdrop-filter:blur(22px);
    box-shadow:0 26px 60px rgba(3,8,20,.7);
  }
  .nav-menu.collapse:not(.show){display:none}
  .nav-list{flex-direction:column;align-items:stretch;gap:6px}
  .nav-link{display:block;padding:12px 16px;font-size:15px}
  .nav-link.active::after{display:none}
  .nav-cta{width:100%;margin-top:4px}
  .hero-panel{padding:42px 30px 36px;border-radius:26px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-media{order:2}
  .hero-media img{aspect-ratio:16/10}
  .intro-grid{grid-template-columns:1fr;gap:26px}
  .media-block{grid-template-columns:1fr;padding:42px 30px;gap:30px}
  .compare-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (min-width:992px){
  .nav-menu.collapse{display:flex !important}
}
@media (max-width:767.98px){
  :root{--section-y:48px}
  .container-x{padding:0 16px}
  .hero-stats{grid-template-columns:1fr;gap:14px;text-align:left}
  .card-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .hero-panel h1{font-size:clamp(30px,8vw,38px)}
  .cta-band{padding:42px 24px;border-radius:26px}
  .media-block h2{font-size:24px}
}
@media (max-width:575.98px){
  .brand-name{font-size:15.5px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn-x{width:100%}
  .cta-actions{flex-direction:column}
  .cta-actions .btn-x{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .hero-panel{padding:32px 20px 28px}
  .media-block{padding:32px 20px}
}

/* roulang page: category2 */
:root{
  --bg-0:#060B17;
  --bg-1:#081122;
  --bg-2:#0D1730;
  --accent:#4EC9FF;
  --accent-2:#3EE0C4;
  --blue:#2F6BFF;
  --gold:#F7C873;
  --text:#F5F9FF;
  --text-body:rgba(225,235,250,.82);
  --text-dim:rgba(225,235,250,.58);
  --glass:rgba(15,27,53,.62);
  --glass-2:rgba(19,34,64,.72);
  --line:rgba(255,255,255,.12);
  --line-hi:rgba(255,255,255,.28);
  --r-lg:22px;
  --r-md:14px;
  --r-sm:9px;
  --pill:999px;
  --glow:0 0 24px rgba(78,201,255,.25);
  --glow-strong:0 0 28px 0 rgba(78,201,255,.5);
  --sec-pad:90px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  background:var(--bg-0);
  color:var(--text-body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  position:relative;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-2;
  background:
    radial-gradient(900px 620px at 12% -6%, rgba(47,107,255,.22), transparent 62%),
    radial-gradient(760px 560px at 92% 6%, rgba(62,224,196,.14), transparent 60%),
    radial-gradient(1000px 720px at 50% 108%, rgba(78,201,255,.12), transparent 64%),
    linear-gradient(180deg,#060B17 0%,#081122 46%,#0D1730 100%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  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% 30%, rgba(0,0,0,.9), transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 30%, rgba(0,0,0,.9), transparent 78%);
}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration:none;transition:color .22s ease,opacity .22s ease}
a:hover{color:var(--accent-2)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
ul{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{color:var(--text);margin:0;font-weight:700;letter-spacing:.2px}
p{margin:0 0 14px}
p:last-child{margin-bottom:0}
::selection{background:rgba(78,201,255,.35);color:#fff}

.container-x{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 22px;
}
.section{padding:var(--sec-pad) 0;position:relative}
.section-sm{padding:64px 0}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  letter-spacing:2px;
  text-transform:uppercase;
  color:var(--accent-2);
  background:rgba(62,224,196,.08);
  border:1px solid rgba(62,224,196,.24);
  border-radius:var(--pill);
  padding:6px 14px;
  margin-bottom:18px;
}
.sec-head h2{font-size:clamp(26px,3.1vw,40px);line-height:1.28;margin-bottom:14px}
.sec-head p{color:var(--text-dim);font-size:15.5px;max-width:70ch}

/* ============ 悬浮胶囊导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  padding-bottom:6px;
}
.nav-shell{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  margin-top:14px;
  padding:9px 12px 9px 18px;
  border-radius:var(--pill);
  background:rgba(9,17,34,.62);
  border:1px solid var(--line);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:0 12px 40px rgba(3,8,20,.5);
  transition:background .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.site-header.is-scrolled .nav-shell{
  background:rgba(7,13,27,.9);
  border-color:rgba(255,255,255,.16);
  box-shadow:0 16px 46px rgba(2,6,16,.72),0 0 0 1px rgba(78,201,255,.08);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(78,201,255,.9),rgba(62,224,196,.85));
  color:#04101f;font-size:15px;
  box-shadow:0 0 18px rgba(78,201,255,.4);
}
.brand-name{
  font-size:16.5px;font-weight:750;color:var(--text);letter-spacing:.6px;white-space:nowrap;
}
.nav-menu{display:flex;align-items:center;gap:26px}
.nav-list{display:flex;align-items:center;gap:6px}
.nav-link{
  display:inline-block;
  position:relative;
  padding:8px 13px;
  font-size:14.5px;
  color:var(--text-dim);
  border-radius:var(--pill);
  transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;bottom:3px;
  width:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  transform:translateX(-50%);
  transition:width .24s ease;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-link:hover::after{width:20px}
.nav-link.active{color:var(--text);background:rgba(78,201,255,.12)}
.nav-link.active::after{width:22px}
.nav-toggle{
  display:none;
  width:42px;height:38px;
  border-radius:var(--pill);
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  color:var(--text);
  cursor:pointer;
}
.nav-toggle:hover{border-color:var(--line-hi)}
.nav-cta{flex:0 0 auto}

/* ============ 按钮 ============ */
.btn-x{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 26px;
  font-size:15px;
  font-weight:650;
  border-radius:var(--pill);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease,color .2s ease;
  white-space:nowrap;
}
.btn-x:active{transform:scale(.98)}
.btn-x:focus-visible,.nav-link:focus-visible,.nav-toggle:focus-visible,a:focus-visible,button:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
}
.btn-glow{
  background:linear-gradient(120deg,#4EC9FF,#3EE0C4);
  color:#04121f;
  box-shadow:0 0 22px rgba(78,201,255,.35);
}
.btn-glow:hover{color:#04121f;transform:translateY(-2px);box-shadow:var(--glow-strong)}
.btn-ghost{
  background:rgba(255,255,255,.05);
  border-color:var(--line);
  color:var(--text);
  backdrop-filter:blur(10px);
}
.btn-ghost:hover{color:var(--text);border-color:var(--line-hi);background:rgba(255,255,255,.1);transform:translateY(-2px)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-block{width:100%}

.pill-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  padding:7px 15px;
  border-radius:var(--pill);
  color:var(--accent-2);
  background:rgba(62,224,196,.08);
  border:1px solid rgba(62,224,196,.24);
}
.tag{
  display:inline-block;
  font-size:12.5px;
  padding:4px 11px;
  border-radius:var(--pill);
  color:rgba(225,235,250,.78);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
}
.tag.gold{color:var(--gold);border-color:rgba(247,200,115,.3);background:rgba(247,200,115,.08)}

/* ============ 页头 Hero ============ */
.page-hero{
  position:relative;
  padding:74px 0 78px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
  opacity:.34;
  z-index:0;
}
.hero-veil{
  position:absolute;
  inset:0;
  z-index:1;
  background:linear-gradient(120deg,rgba(6,11,23,.94) 12%,rgba(8,17,34,.82) 52%,rgba(13,23,48,.72) 100%);
}
.hero-orb{
  position:absolute;
  width:380px;height:380px;
  border-radius:50%;
  filter:blur(90px);
  z-index:1;
  pointer-events:none;
}
.orb-a{background:rgba(78,201,255,.28);top:-120px;right:-60px}
.orb-b{background:rgba(62,224,196,.2);bottom:-160px;left:-80px}
.hero-inner{position:relative;z-index:2}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:9px;
  font-size:13px;
  color:var(--text-dim);
  margin-bottom:22px;
}
.crumb a{color:var(--text-dim)}
.crumb a:hover{color:var(--accent)}
.crumb .sep{opacity:.4}
.crumb .now{color:var(--accent-2)}
.page-hero h1{
  font-size:clamp(34px,4.6vw,58px);
  line-height:1.18;
  font-weight:750;
  margin:16px 0 18px;
  background:linear-gradient(100deg,#F5F9FF 22%,#4EC9FF 68%,#3EE0C4 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  font-size:clamp(16px,1.5vw,18px);
  color:var(--text-body);
  max-width:66ch;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-metrics{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:18px;
  max-width:760px;
}
.metric{
  padding:18px 20px;
  border-radius:var(--r-md);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.metric strong{display:block;font-size:24px;font-weight:750;color:var(--accent);line-height:1.2}
.metric span{font-size:13px;color:var(--text-dim)}

/* ============ 玻璃卡片 / 索引卡 ============ */
.glass{
  position:relative;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  overflow:hidden;
}
.glass::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.36),transparent);
}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}

.idx-card{
  padding:28px 26px 26px;
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.idx-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-hi);
  box-shadow:var(--glow);
}
.idx-icon{
  width:46px;height:46px;
  border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;
  color:var(--accent);
  background:rgba(78,201,255,.1);
  border:1px solid rgba(78,201,255,.26);
  margin-bottom:18px;
}
.idx-card h3{font-size:18.5px;margin-bottom:10px;font-weight:650}
.idx-card p{font-size:14.6px;color:var(--text-dim);margin-bottom:16px}
.idx-link{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:7px}
.idx-link i{font-size:12px;transition:transform .22s ease}
.idx-link:hover i{transform:translateX(4px)}

/* ============ 交错图文 ============ */
.split{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:48px;
  align-items:center;
}
.split.rev .split-media{order:2}
.split-copy h3{font-size:clamp(22px,2.4vw,30px);line-height:1.34;margin-bottom:16px}
.split-copy p{color:var(--text-dim);font-size:15.4px}
.split-list{margin-top:20px;display:grid;gap:12px}
.split-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:14.8px;color:var(--text-body);
}
.split-list li i{color:var(--accent-2);margin-top:5px;font-size:13px}
.split-media{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:0 24px 60px rgba(3,8,20,.55);
}
.split-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.split-media .media-tag{
  position:absolute;
  left:16px;bottom:16px;
  padding:8px 14px;
  font-size:12.5px;
  border-radius:var(--pill);
  color:var(--text);
  background:rgba(6,11,23,.68);
  border:1px solid var(--line);
  backdrop-filter:blur(10px);
}

/* ============ 流程时间线 ============ */
.flow{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:22px;
  counter-reset:step;
}
.flow-item{
  padding:26px 22px;
  border-radius:var(--r-lg);
  background:var(--glass-2);
  border:1px solid var(--line);
  position:relative;
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.flow-item:hover{transform:translateY(-4px);border-color:var(--line-hi);box-shadow:var(--glow)}
.flow-num{
  display:inline-flex;
  align-items:center;justify-content:center;
  width:34px;height:34px;
  border-radius:11px;
  font-size:14px;font-weight:750;
  color:#04121f;
  background:linear-gradient(135deg,#4EC9FF,#3EE0C4);
  margin-bottom:16px;
}
.flow-item h3{font-size:17px;margin-bottom:9px;font-weight:650}
.flow-item p{font-size:14.3px;color:var(--text-dim)}

/* ============ FAQ ============ */
.faq-acc{
  --bs-accordion-bg:transparent;
  --bs-accordion-border-width:0;
  --bs-accordion-border-color:transparent;
  --bs-accordion-btn-bg:transparent;
  --bs-accordion-btn-color:var(--text);
  --bs-accordion-active-bg:transparent;
  --bs-accordion-active-color:var(--text);
  --bs-accordion-btn-focus-box-shadow:none;
  --bs-accordion-body-padding-x:0;
  --bs-accordion-body-padding-y:0;
  display:grid;
  gap:14px;
}
.faq-acc .accordion-item{
  border-radius:var(--r-lg);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  overflow:hidden;
  transition:border-color .24s ease,box-shadow .24s ease;
}
.faq-acc .accordion-item:hover{border-color:var(--line-hi)}
.faq-acc .accordion-button{
  padding:20px 56px 20px 22px;
  font-size:16.5px;
  font-weight:650;
  color:var(--text);
  background:transparent;
  border:0;
  box-shadow:none;
  position:relative;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--accent)}
.faq-acc .accordion-button::after{
  content:"\f078";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  position:absolute;
  right:22px;
  top:50%;
  transform:translateY(-50%);
  font-size:13px;
  color:var(--accent);
  background-image:none;
  width:auto;height:auto;
  transition:transform .26s ease;
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(180deg)}
.faq-acc .accordion-body{
  padding:0 60px 22px 22px;
  font-size:14.9px;
  color:var(--text-dim);
  max-width:80ch;
}

/* ============ CTA + 表单 ============ */
.cta-panel{
  position:relative;
  display:grid;
  grid-template-columns:1.02fr .98fr;
  gap:44px;
  padding:48px 46px;
  border-radius:26px;
  background:
    linear-gradient(140deg,rgba(19,34,64,.86),rgba(9,17,34,.9));
  border:1px solid var(--line);
  box-shadow:0 30px 80px rgba(2,6,16,.6);
  overflow:hidden;
}
.cta-panel::after{
  content:"";
  position:absolute;
  width:340px;height:340px;
  right:-110px;top:-130px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(78,201,255,.28),transparent 68%);
  pointer-events:none;
}
.cta-copy{position:relative;z-index:1}
.cta-copy h2{font-size:clamp(24px,2.7vw,34px);line-height:1.3;margin-bottom:14px}
.cta-copy p{color:var(--text-dim);font-size:15.2px;margin-bottom:22px}
.cta-points{display:grid;gap:11px}
.cta-points li{display:flex;gap:11px;font-size:14.6px;align-items:flex-start}
.cta-points i{color:var(--accent-2);margin-top:5px;font-size:13px}

.help-form{position:relative;z-index:1;display:grid;gap:14px}
.field label{
  display:block;
  font-size:13px;
  color:var(--text-dim);
  margin-bottom:7px;
  letter-spacing:.4px;
}
.field .control{
  width:100%;
  padding:12px 15px;
  border-radius:var(--r-sm);
  background:rgba(6,11,23,.6);
  border:1px solid var(--line);
  color:var(--text);
  font-size:14.6px;
  transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.field .control::placeholder{color:rgba(225,235,250,.36)}
.field .control:hover{border-color:var(--line-hi)}
.field .control:focus{
  outline:none;
  border-color:rgba(78,201,255,.6);
  box-shadow:0 0 0 3px rgba(78,201,255,.16);
  background:rgba(6,11,23,.78);
}
.field textarea.control{min-height:104px;resize:vertical}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-note{font-size:13px;color:var(--accent-2);min-height:20px}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:72px;
  padding:66px 0 28px;
  background:linear-gradient(180deg,rgba(6,11,23,.4),rgba(4,8,17,.96));
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:34px;
  padding-bottom:40px;
  border-bottom:1px solid var(--line);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-desc{font-size:14.3px;color:var(--text-dim);max-width:42ch}
.footer-col h4{font-size:15px;margin-bottom:16px;font-weight:650}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14.2px;color:var(--text-dim)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  padding-top:22px;
  font-size:13.2px;
  color:rgba(225,235,250,.5);
}
.footer-bottom a{color:rgba(225,235,250,.62)}
.footer-bottom a:hover{color:var(--accent)}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  :root{--sec-pad:76px}
  .cta-panel{padding:40px 34px;gap:34px}
}
@media (max-width:991.98px){
  :root{--sec-pad:64px}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-menu.collapse{
    position:absolute;
    left:0;right:0;
    top:calc(100% + 10px);
    flex-direction:column;
    align-items:stretch;
    gap:14px;
    padding:18px;
    border-radius:24px;
    background:rgba(7,13,27,.96);
    border:1px solid var(--line);
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
    box-shadow:0 24px 60px rgba(2,6,16,.7);
  }
  .nav-menu.collapse.show{display:flex}
  .nav-list{flex-direction:column;align-items:stretch;gap:4px}
  .nav-link{padding:12px 14px;font-size:15px}
  .nav-link::after{display:none}
  .nav-link.active{background:rgba(78,201,255,.14)}
  .nav-cta{width:100%;margin-top:4px}
  .nav-shell{position:relative}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split{grid-template-columns:1fr;gap:30px}
  .split.rev .split-media{order:0}
  .cta-panel{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .hero-metrics{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (min-width:992px){
  .nav-menu.collapse{display:flex !important;height:auto !important;visibility:visible !important}
}
@media (max-width:767.98px){
  .page-hero{padding:52px 0 56px}
  .hero-metrics{grid-template-columns:1fr 1fr;gap:14px}
  .grid-3{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .faq-acc .accordion-button{padding:18px 50px 18px 18px;font-size:15.6px}
  .faq-acc .accordion-body{padding:0 20px 20px 18px}
  .cta-panel{padding:32px 22px;border-radius:22px}
  .section-sm{padding:48px 0}
}
@media (max-width:519.98px){
  .container-x{padding:0 16px}
  .brand-name{font-size:15px}
  .hero-metrics{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .hero-actions .btn-x{width:100%}
}