/* roulang page: index */
:root{
  --bg-0:#070C0F;
  --bg-1:#0C141A;
  --bg-2:#101B22;
  --primary:#12E6A0;
  --primary-deep:#06A176;
  --accent:#FF7A2F;
  --text-1:#F2F6F7;
  --text-2:#A9B8BE;
  --text-3:#6D8087;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --glass:rgba(255,255,255,.045);
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-1:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-2:0 0 0 1px rgba(18,230,160,.28),0 18px 46px -20px rgba(18,230,160,.42);
  --sidebar:260px;
  --container:1200px;
  --ease:cubic-bezier(.2,.7,.2,1);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono","Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -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(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:72px 72px;
  -webkit-mask-image:radial-gradient(circle at 72% 8%,#000 0%,transparent 68%);
  mask-image:radial-gradient(circle at 72% 8%,#000 0%,transparent 68%);
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:700;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:rgba(18,230,160,.28);color:#fff}
.num{font-variant-numeric:tabular-nums;font-family:var(--mono);letter-spacing:.02em}

/* ============ 侧栏 / 导航 ============ */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar);
  z-index:60;
  display:flex;
  flex-direction:column;
  gap:22px;
  padding:24px 18px 22px;
  background:rgba(10,18,22,.92);
  border-right:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px) saturate(120%);
  backdrop-filter:blur(10px) saturate(120%);
  overflow-y:auto;
  transition:transform .3s var(--ease);
}
.sidebar::-webkit-scrollbar{width:6px}
.sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.1);border-radius:99px}
.brand{display:flex;align-items:center;gap:12px;padding:6px 8px 14px;border-bottom:1px solid var(--line)}
.brand-mark{
  flex:0 0 38px;
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04140E;
  font-size:18px;
  font-weight:800;
  box-shadow:0 8px 22px -10px rgba(18,230,160,.75);
}
.brand-text{display:flex;flex-direction:column;line-height:1.35}
.brand-text strong{color:var(--text-1);font-size:15px;font-weight:700;letter-spacing:.01em}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.08em;margin-top:3px}
.nav{display:flex;flex-direction:column;gap:4px}
.nav-title{font-size:11px;letter-spacing:.16em;color:var(--text-3);padding:0 10px 8px}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  padding:11px 12px;
  border-radius:10px;
  font-size:14.5px;
  color:var(--text-2);
  transition:background .22s var(--ease),color .22s var(--ease);
}
.nav-item::before{
  content:"";
  width:6px;height:6px;
  border-radius:50%;
  background:var(--text-3);
  opacity:.55;
  transition:background .22s var(--ease),box-shadow .22s var(--ease),opacity .22s var(--ease);
  flex:0 0 auto;
}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--text-1)}
.nav-item:hover::before{background:var(--primary);opacity:1;box-shadow:0 0 8px rgba(18,230,160,.8)}
.nav-item.is-active{
  color:var(--text-1);
  background:linear-gradient(90deg,rgba(18,230,160,.16),rgba(18,230,160,0) 92%);
  box-shadow:inset 3px 0 0 var(--primary);
}
.nav-item.is-active::before{background:var(--primary);opacity:1;box-shadow:0 0 8px rgba(18,230,160,.85)}
.nav-item:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.search{position:relative}
.search input{
  width:100%;
  padding:10px 12px 10px 34px;
  border-radius:10px;
  border:1px solid var(--line);
  background:var(--glass);
  color:var(--text-1);
  font-size:13.5px;
  outline:none;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.search input::placeholder{color:var(--text-3)}
.search input:focus{
  border-color:var(--primary);
  background:rgba(18,230,160,.06);
  box-shadow:0 0 0 3px rgba(18,230,160,.16);
}
.search svg{position:absolute;left:11px;top:50%;transform:translateY(-50%);width:15px;height:15px;stroke:var(--text-3);fill:none;stroke-width:1.7}
.side-spacer{flex:1 1 auto}
.side-foot{font-size:11.5px;color:var(--text-3);line-height:1.7;padding:0 8px;border-top:1px solid var(--line);padding-top:16px}

/* ============ 主区域 ============ */
.main{position:relative;z-index:1;margin-left:var(--sidebar);min-height:100vh}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 28px}
.topbar{
  position:sticky;
  top:0;
  z-index:40;
  height:48px;
  display:flex;
  align-items:center;
  background:rgba(7,12,15,.82);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}
.topbar-inner{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:12.5px;
  color:var(--text-3);
}
.crumb{display:flex;align-items:center;gap:8px}
.crumb b{color:var(--text-2);font-weight:500}
.live-dot{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 0 rgba(18,230,160,.6);animation:pulse 2.4s infinite}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(18,230,160,.55)}
  70%{box-shadow:0 0 0 9px rgba(18,230,160,0)}
  100%{box-shadow:0 0 0 0 rgba(18,230,160,0)}
}

/* ============ Hero ============ */
.hero{position:relative;padding:84px 0 96px;overflow:hidden}
.hero-media{position:absolute;inset:0;z-index:0}
.hero-media img{width:100%;height:100%;object-fit:cover;opacity:.34}
.hero-glow{
  position:absolute;
  width:640px;height:640px;
  right:-140px;top:-180px;
  background:radial-gradient(circle,rgba(18,230,160,.14),transparent 62%);
  z-index:1;pointer-events:none;
}
.hero-shade{
  position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(7,12,15,.5) 0%,rgba(7,12,15,.86) 58%,var(--bg-0) 100%);
}
.hero-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.12fr .88fr;
  gap:52px;
  align-items:center;
}
.hero-copy h1{font-size:clamp(30px,4.2vw,50px);line-height:1.16;letter-spacing:-.015em;margin:20px 0 18px}
.hero-copy h1 span{color:var(--primary)}
.hero-sub{font-size:17px;color:var(--text-2);max-width:620px;line-height:1.9}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 26px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px}
.hero-points li{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:7px 13px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:var(--glass);
  font-size:12.5px;
  color:var(--text-2);
  -webkit-backdrop-filter:blur(10px) saturate(120%);
  backdrop-filter:blur(10px) saturate(120%);
}
.hero-points li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--primary)}
.visual-card{
  position:relative;
  overflow:hidden;
  background:var(--bg-2);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 34px),calc(100% - 34px) 100%,0 100%);
  box-shadow:var(--shadow-1);
}
.visual-card img{width:100%;aspect-ratio:16/11;object-fit:cover;transition:transform .5s var(--ease)}
.visual-card:hover img{transform:scale(1.03)}
.visual-cap{
  padding:16px 20px 20px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(16,27,34,.96),rgba(12,20,26,.96));
}
.visual-cap h3{font-size:16px;margin-bottom:6px}
.visual-cap p{font-size:13px;color:var(--text-3);line-height:1.7}
.visual-badge{
  position:absolute;
  top:16px;left:16px;
  z-index:2;
  padding:5px 12px;
  border-radius:var(--r-pill);
  font-size:11.5px;
  letter-spacing:.04em;
  color:#04140E;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  font-weight:700;
}

/* ============ 通用板块 ============ */
.section{padding:96px 0;position:relative}
.section.tint{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.eyebrow{
  display:inline-block;
  font-size:11.5px;
  letter-spacing:.18em;
  color:var(--primary);
  margin-bottom:12px;
  text-transform:uppercase;
}
.section-head h2{font-size:clamp(24px,3vw,34px)}
.section-head .lead{margin-top:12px;font-size:15px;color:var(--text-3);max-width:640px;line-height:1.85}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--primary);white-space:nowrap}
.text-link span{transition:transform .22s var(--ease)}
.text-link:hover{color:#7CF6CE;text-decoration:underline;text-underline-offset:3px}
.text-link:hover span{transform:translateX(4px)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--r-btn);
  font-size:14.5px;
  font-weight:600;
  letter-spacing:.02em;
  border:1px solid transparent;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  color:#04140E;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:0 12px 30px -16px rgba(18,230,160,.85);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 18px -12px rgba(18,230,160,.8)}
.btn-ghost{color:var(--text-1);border-color:var(--line-strong);background:transparent}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-block{width:100%}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:var(--r-pill);
  font-size:12px;
  letter-spacing:.04em;
  line-height:1.7;
}
.badge-primary{color:var(--primary);background:rgba(18,230,160,.12);border:1px solid rgba(18,230,160,.3)}
.badge-accent{color:var(--accent);background:rgba(255,122,47,.12);border:1px solid rgba(255,122,47,.3)}
.badge-muted{color:var(--text-3);background:rgba(255,255,255,.05);border:1px solid var(--line)}

/* ============ 痛点 ============ */
.pain-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.pain-card{
  padding:26px 24px;
  border-radius:var(--r-card);
  background:var(--bg-2);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.pain-card:hover{transform:translateY(-4px);border-color:rgba(18,230,160,.24)}
.pain-num{
  display:block;
  font-family:var(--mono);
  font-size:13px;
  color:var(--accent);
  letter-spacing:.16em;
  margin-bottom:16px;
}
.pain-icon{
  width:44px;height:44px;
  border-radius:12px;
  display:grid;place-items:center;
  background:rgba(18,230,160,.1);
  border:1px solid rgba(18,230,160,.22);
  margin-bottom:18px;
}
.pain-icon svg{width:22px;height:22px;stroke:var(--primary);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.pain-card h3{font-size:17px;margin-bottom:10px}
.pain-card p{font-size:13.5px;color:var(--text-3);line-height:1.8}

/* ============ 解决方案（错落布局） ============ */
.solve-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px}
.solve-main{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-2);
  box-shadow:var(--shadow-1);
}
.solve-main img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s var(--ease)}
.solve-main:hover img{transform:scale(1.03)}
.solve-main-body{padding:26px 26px 30px}
.solve-main-body h3{font-size:21px;margin:14px 0 12px}
.solve-main-body p{font-size:14.5px;color:var(--text-3);line-height:1.85}
.solve-side{display:grid;gap:24px}
.solve-mini{
  display:flex;
  gap:18px;
  padding:22px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--bg-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.solve-mini:hover{transform:translateY(-4px);border-color:rgba(18,230,160,.24);background:var(--bg-2)}
.solve-mini img{width:96px;height:96px;flex:0 0 96px;object-fit:cover;border-radius:10px}
.solve-mini h4{font-size:16px;margin-bottom:8px}
.solve-mini p{font-size:13px;color:var(--text-3);line-height:1.75}
.solve-step{
  display:flex;
  gap:16px;
  align-items:flex-start;
  padding:22px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--bg-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.solve-step:hover{transform:translateY(-4px);border-color:rgba(18,230,160,.24)}
.solve-step .n{
  font-family:var(--mono);
  font-size:22px;
  color:var(--primary);
  line-height:1.2;
  flex:0 0 auto;
}
.solve-step h4{font-size:16px;margin-bottom:8px}
.solve-step p{font-size:13px;color:var(--text-3);line-height:1.75}

/* ============ 数据 ============ */
.stats{
  background:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px),
    var(--bg-1);
  background-size:48px 48px,48px 48px,auto;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat{padding:14px 8px}
.stat .value{
  font-family:var(--mono);
  font-size:clamp(30px,3.6vw,44px);
  font-weight:700;
  color:var(--text-1);
  line-height:1.1;
  font-variant-numeric:tabular-nums;
}
.stat .value i{font-style:normal;font-size:.5em;color:var(--primary);margin-left:2px}
.stat .bar{
  width:46px;height:3px;margin:14px auto 16px;
  border-radius:99px;
  background:linear-gradient(90deg,var(--primary),var(--primary-deep));
  box-shadow:0 0 14px rgba(18,230,160,.7);
}
.stat p{font-size:13.5px;color:var(--text-3)}

/* ============ 证言 ============ */
.quotes{
  display:grid;
  grid-auto-flow:column;
  grid-auto-columns:minmax(300px,1fr);
  gap:20px;
  overflow-x:auto;
  padding-bottom:14px;
  scroll-snap-type:x mandatory;
}
.quotes::-webkit-scrollbar{height:6px}
.quotes::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:99px}
.quote-card{
  scroll-snap-align:start;
  padding:26px 24px;
  border-radius:var(--r-card);
  border:1px solid var(--line-strong);
  background:var(--glass);
  -webkit-backdrop-filter:blur(10px) saturate(120%);
  backdrop-filter:blur(10px) saturate(120%);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.quote-card:hover{transform:translateY(-4px);border-color:rgba(18,230,160,.3)}
.stars{color:var(--accent);font-size:13px;letter-spacing:.22em;margin-bottom:14px}
.quote-card p{font-size:14.5px;color:var(--text-2);line-height:1.9}
.quote-user{display:flex;align-items:center;gap:12px;margin-top:20px;padding-top:18px;border-top:1px solid var(--line)}
.quote-avatar{
  width:38px;height:38px;border-radius:50%;
  display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(18,230,160,.35),rgba(6,161,118,.5));
  color:var(--text-1);
  font-size:14px;font-weight:700;
  flex:0 0 auto;
}
.quote-user strong{display:block;color:var(--text-1);font-size:14px;font-weight:600}
.quote-user span{font-size:12px;color:var(--text-3)}

/* ============ 最新信息 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;
  flex-direction:column;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-2);
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(18,230,160,.22)}
.news-thumb{overflow:hidden;background:var(--bg-1)}
.news-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-body h3{
  font-size:16.5px;
  line-height:1.55;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  transition:color .22s var(--ease);
}
.news-card:hover .news-body h3{color:var(--primary)}
.news-body p{
  font-size:13.5px;
  color:var(--text-3);
  line-height:1.8;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-meta{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:12.5px;
  color:var(--text-3);
  font-family:var(--mono);
}
.news-meta .go{color:var(--primary);transition:transform .22s var(--ease)}
.news-card:hover .news-meta .go{transform:translateX(4px)}
.empty-state{
  grid-column:1/-1;
  padding:64px 24px;
  text-align:center;
  border-radius:var(--r-card);
  border:1px dashed var(--line-strong);
  background:var(--bg-1);
}
.empty-state .mark{
  width:54px;height:54px;margin:0 auto 18px;
  border-radius:16px;
  display:grid;place-items:center;
  background:rgba(18,230,160,.1);
  border:1px solid rgba(18,230,160,.22);
}
.empty-state .mark svg{width:24px;height:24px;stroke:var(--primary);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:20px}
.empty-state .actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--glass);
  -webkit-backdrop-filter:blur(10px) saturate(120%);
  backdrop-filter:blur(10px) saturate(120%);
  overflow:hidden;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.faq-item:hover{border-color:rgba(18,230,160,.22)}
.faq-item.is-open{border-color:rgba(18,230,160,.35);background:rgba(18,230,160,.05)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 24px;
  text-align:left;
  font-size:15.5px;
  font-weight:600;
  color:var(--text-1);
  line-height:1.6;
}
.faq-q:focus-visible{outline:2px solid var(--primary);outline-offset:-3px}
.faq-ico{position:relative;flex:0 0 20px;width:20px;height:20px}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--primary);
  border-radius:2px;
  transition:transform .28s var(--ease),opacity .28s var(--ease);
}
.faq-ico::before{width:13px;height:1.8px;transform:translate(-50%,-50%)}
.faq-ico::after{width:1.8px;height:13px;transform:translate(-50%,-50%)}
.faq-item.is-open .faq-ico::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq-item.is-open .faq-a{max-height:340px}
.faq-a-inner{
  padding:0 24px 22px 24px;
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.9;
  border-left:3px solid var(--primary);
  margin-left:24px;
  padding-left:18px;
}

/* ============ 结尾 CTA ============ */
.cta-band{
  position:relative;
  padding:88px 0;
  text-align:center;
  background:var(--bg-1);
  border-top:1px solid var(--line);
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  left:50%;top:-40%;
  width:900px;height:900px;
  transform:translateX(-50%);
  background:radial-gradient(circle,rgba(18,230,160,.14),transparent 60%);
  pointer-events:none;
}
.cta-band .container{position:relative;z-index:2}
.cta-band h2{font-size:clamp(24px,3vw,34px);margin-bottom:16px}
.cta-band p{max-width:660px;margin:0 auto;font-size:15px;color:var(--text-3);line-height:1.9}
.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-top:32px}

/* ============ 页脚 ============ */
.footer{background:var(--bg-0);border-top:1px solid var(--line);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:52px}
.footer-logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  color:var(--text-1);
  margin-bottom:16px;
}
.footer-logo::before{
  content:"";
  width:10px;height:10px;border-radius:3px;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:0 0 12px rgba(18,230,160,.7);
}
.footer-brand p{font-size:13.5px;color:var(--text-3);line-height:1.9;max-width:380px}
.footer h4{font-size:14px;margin-bottom:18px;color:var(--text-1)}
.footer ul{display:grid;gap:10px}
.footer ul li{font-size:13.5px;color:var(--text-3)}
.footer ul a{color:var(--text-3)}
.footer ul a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12.5px;
  color:var(--text-3);
}

/* ============ 移动端 ============ */
.mobile-bar{display:none}
.drawer-mask{
  display:none;
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.6);
  z-index:55;
}
.drawer-mask.is-open{display:block}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
  .live-dot{animation:none}
}

/* ============ 断点 ============ */
@media (max-width:1439px){
  :root{--sidebar:240px}
}
@media (max-width:1199px){
  :root{--sidebar:88px}
  .sidebar{padding:20px 12px;align-items:center}
  .brand{justify-content:center;padding:6px 0 14px;width:100%}
  .brand-text{display:none}
  .nav{width:100%;align-items:center}
  .nav-title,.search,.side-cta,.side-foot{display:none}
  .nav-item{justify-content:center;padding:12px 4px;width:100%;font-size:12.5px}
  .nav-item::before{display:none}
  .pain-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:991px){
  .mobile-bar{
    display:flex;
    align-items:center;
    gap:14px;
    position:sticky;
    top:0;
    z-index:70;
    height:58px;
    padding:0 18px;
    background:rgba(7,12,15,.94);
    border-bottom:1px solid var(--line);
    -webkit-backdrop-filter:blur(12px);
    backdrop-filter:blur(12px);
  }
  .burger{
    width:36px;height:36px;
    display:grid;
    align-content:center;
    justify-items:center;
    gap:5px;
    border-radius:9px;
    border:1px solid var(--line-strong);
  }
  .burger span{display:block;width:16px;height:1.7px;background:var(--text-1);border-radius:2px;transition:transform .25s var(--ease),opacity .25s var(--ease)}
  .burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6.7px) rotate(45deg)}
  .burger[aria-expanded="true"] span:nth-child(2){opacity:0}
  .burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.7px) rotate(-45deg)}
  .mobile-brand{font-size:15px;font-weight:700;color:var(--text-1)}
  .sidebar{
    width:280px;
    align-items:stretch;
    transform:translateX(-100%);
    padding:24px 18px;
  }
  .sidebar.is-open{transform:translateX(0)}
  .brand{justify-content:flex-start;padding:6px 8px 14px}
  .brand-text{display:flex}
  .nav{align-items:stretch}
  .nav-title{display:block}
  .nav-item{justify-content:flex-start;padding:11px 12px;font-size:14.5px;width:auto}
  .nav-item::before{display:block}
  .search{display:block}
  .side-cta{display:block}
  .side-foot{display:block}
  .main{margin-left:0}
  .topbar{top:58px}
  .hero{padding:56px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .solve-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .section{padding:64px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .news-grid{grid-template-columns:1fr}
  .quotes{grid-auto-columns:minmax(260px,86%)}
  .footer-grid{grid-template-columns:1fr;gap:30px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .topbar-inner{padding:0 18px;font-size:12px}
  .crumb b{display:none}
  .pain-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .cta-actions{flex-direction:column;align-items:stretch}
  .cta-actions .btn{width:100%}
  .solve-mini{flex-direction:column}
  .solve-mini img{width:100%;height:150px;flex:0 0 auto}
  .section{padding:48px 0}
  .hero{padding:44px 0 52px}
  .faq-q{padding:18px 18px;font-size:14.5px}
  .faq-a-inner{margin-left:18px;padding:0 18px 20px 14px}
  .footer{padding:52px 0 0}
}

/* roulang page: article */
:root{
  --bg-0:#070C0F;
  --bg-1:#0C141A;
  --bg-2:#101B22;
  --primary:#12E6A0;
  --primary-deep:#06A176;
  --accent:#FF7A2F;
  --text-1:#F2F6F7;
  --text-2:#A9B8BE;
  --text-3:#6D8087;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --glass:rgba(255,255,255,.045);
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-1:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-2:0 18px 42px -18px rgba(18,230,160,.45);
  --sidebar-w:260px;
  --gap:24px;
  --mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono","Courier New",monospace;
  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(52% 44% at 78% -6%,rgba(18,230,160,.13),transparent 68%),
             radial-gradient(40% 34% at 4% 88%,rgba(255,122,47,.07),transparent 70%);
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button,input,textarea{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:700;line-height:1.24;letter-spacing:-.01em;}
p{margin:0 0 1.2em;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:rgba(18,230,160,.28);color:#fff;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ============ 侧边导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);z-index:60;
  display:flex;flex-direction:column;gap:16px;
  padding:24px 18px 18px;
  background:linear-gradient(180deg,rgba(16,27,34,.94),rgba(7,12,15,.97));
  backdrop-filter:blur(10px) saturate(120%);
  border-right:1px solid var(--line);
  overflow-y:auto;
}
.logo{display:flex;align-items:center;gap:11px;padding:2px 4px 12px;border-bottom:1px solid var(--line);}
.logo-mark{
  flex:0 0 38px;width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04140F;font-weight:800;font-size:15px;letter-spacing:.02em;
  box-shadow:0 0 20px rgba(18,230,160,.42);
}
.logo-text{font-size:16px;font-weight:700;color:var(--text-1);line-height:1.15;}
.logo-sub{display:block;margin-top:3px;font-size:11px;color:var(--text-3);letter-spacing:.06em;font-weight:400;}
.nav{display:flex;flex-direction:column;gap:4px;}
.nav-label{font-size:11px;letter-spacing:.14em;color:var(--text-3);padding:6px 12px 4px;text-transform:uppercase;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:10px;font-size:14.5px;color:var(--text-2);
  transition:background .22s ease,color .22s ease,transform .22s ease;
}
.nav-item i{width:20px;text-align:center;font-size:15px;color:var(--text-3);transition:color .22s ease,filter .22s ease;}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--text-1);}
.nav-item:hover i{color:var(--primary);}
.nav-item.active{background:linear-gradient(90deg,rgba(18,230,160,.16),rgba(18,230,160,0));color:var(--text-1);}
.nav-item.active::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:3px;background:var(--primary);}
.nav-item.active i{color:var(--primary);filter:drop-shadow(0 0 8px rgba(18,230,160,.7));}
.side-search{position:relative;}
.side-search input{
  width:100%;padding:10px 12px 10px 36px;font-size:14px;color:var(--text-1);
  background:rgba(255,255,255,.045);border:1px solid var(--line);border-radius:10px;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.side-search input::placeholder{color:var(--text-3);}
.side-search input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(18,230,160,.16);}
.side-search i{position:absolute;left:12px;top:50%;transform:translateY(-50%);font-size:13px;color:var(--text-3);}
.side-cta{margin-top:auto;display:flex;flex-direction:column;gap:10px;}
.side-foot{font-size:11.5px;color:var(--text-3);line-height:1.7;border-top:1px solid var(--line);padding-top:12px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;border-radius:var(--r-btn);font-size:14.5px;font-weight:600;
  border:1px solid transparent;transition:transform .22s cubic-bezier(.2,.7,.2,1),box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
}
.btn-primary{
  color:#04140F;background:linear-gradient(180deg,var(--primary),var(--primary-deep));
  box-shadow:0 10px 26px -14px rgba(18,230,160,.85);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(18,230,160,.4),0 18px 34px -14px rgba(18,230,160,.7);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 16px -10px rgba(18,230,160,.6);}
.btn-ghost{color:var(--text-1);background:transparent;border-color:var(--line-strong);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-block{width:100%;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--primary);}
.link-more i{transition:transform .22s ease;}
.link-more:hover{text-decoration:underline;text-underline-offset:4px;}
.link-more:hover i{transform:translateX(4px);}

/* ============ 徽章 ============ */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);font-size:12px;letter-spacing:.04em;line-height:1.6;}
.badge-primary{background:rgba(18,230,160,.14);color:var(--primary);border:1px solid rgba(18,230,160,.3);}
.badge-accent{background:rgba(255,122,47,.14);color:var(--accent);border:1px solid rgba(255,122,47,.3);}
.badge-plain{background:rgba(255,255,255,.05);color:var(--text-3);border:1px solid var(--line);}

/* ============ 主区域 ============ */
.main{position:relative;z-index:1;margin-left:var(--sidebar-w);min-height:100vh;padding-bottom:0;}
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:70;
  align-items:center;gap:12px;padding:0 14px;
  background:rgba(9,15,19,.93);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);
}
.burger{width:40px;height:40px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;border:1px solid var(--line);border-radius:10px;}
.burger span{display:block;width:16px;height:2px;border-radius:2px;background:var(--text-1);transition:transform .2s ease,opacity .2s ease;}
.mobile-brand{font-size:15.5px;font-weight:700;color:var(--text-1);}
.overlay{position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:55;opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;}
body.nav-open .overlay{opacity:1;visibility:visible;}

.topbar{
  position:sticky;top:0;z-index:40;
  background:rgba(7,12,15,.82);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:48px;padding:8px 0;font-size:13px;}
.crumbs{display:flex;align-items:center;gap:8px;flex-wrap:wrap;color:var(--text-3);min-width:0;}
.crumbs a{color:var(--text-3);transition:color .2s ease;}
.crumbs a:hover{color:var(--primary);}
.crumbs em{font-style:normal;color:var(--text-2);max-width:32ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.crumbs .sep{opacity:.5;}
.topbar-date{font-family:var(--mono);font-size:12px;color:var(--text-3);white-space:nowrap;}

/* ============ 文章布局 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:36px;align-items:start;
  padding:32px 0 0;
}
.article{min-width:0;}
.article-head{max-width:820px;}
.article-head h1{font-size:clamp(26px,3.4vw,40px);line-height:1.22;margin:16px 0 18px;}
.tag-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.meta-row{display:flex;align-items:center;gap:18px;flex-wrap:wrap;font-size:13px;color:var(--text-3);}
.meta-row .meta{display:inline-flex;align-items:center;gap:7px;}
.meta-row .meta i{color:var(--primary);opacity:.85;}
.meta-row .meta.time{font-family:var(--mono);}
.article-cover{
  position:relative;margin:26px 0 34px;border-radius:16px;overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-1);
  clip-path:polygon(0 0,calc(100% - 38px) 0,100% 38px,100% 100%,0 100%);
}
.article-cover img{width:100%;aspect-ratio:16/10;object-fit:cover;}

/* ============ 正文排版 ============ */
.article-content{max-width:800px;font-size:17px;line-height:1.95;color:var(--text-2);}
.article-content > *:first-child{margin-top:0;}
.article-content p{margin:0 0 1.4em;}
.article-content h2{
  font-size:clamp(21px,2.4vw,27px);color:var(--text-1);
  margin:2.2em 0 .8em;padding-left:14px;border-left:4px solid var(--primary);line-height:1.35;
}
.article-content h3{font-size:20px;color:var(--text-1);margin:1.8em 0 .6em;}
.article-content h4{font-size:17px;color:var(--text-1);margin:1.5em 0 .5em;}
.article-content strong{color:var(--text-1);font-weight:700;}
.article-content a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;transition:opacity .2s ease;}
.article-content a:hover{opacity:.8;}
.article-content ul{margin:0 0 1.5em;}
.article-content ul li{position:relative;padding-left:22px;margin:.55em 0;}
.article-content ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:8px;height:8px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px rgba(18,230,160,.6);
}
.article-content ol{margin:0 0 1.5em;padding-left:1.4em;list-style:decimal;}
.article-content ol li{margin:.55em 0;padding-left:6px;}
.article-content ol li::marker{color:var(--primary);font-family:var(--mono);}
.article-content blockquote{
  margin:1.8em 0;padding:18px 22px;border-left:3px solid var(--primary);
  background:var(--glass);border-radius:0 12px 12px 0;color:var(--text-1);
  backdrop-filter:blur(10px) saturate(120%);
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{border-radius:12px;margin:1.8em 0;box-shadow:var(--shadow-1);}
.article-content figure{margin:1.8em 0;}
.article-content figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.article-content table{width:100%;border-collapse:separate;border-spacing:0 8px;margin:1.6em 0;font-size:15px;}
.article-content thead th{
  text-align:left;font-size:13px;letter-spacing:.04em;color:var(--text-3);font-weight:600;padding:0 16px 6px;
}
.article-content tbody tr{background:var(--bg-2);}
.article-content tbody td{padding:14px 16px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);color:var(--text-2);}
.article-content tbody td:first-child{border-left:1px solid var(--line);border-radius:12px 0 0 12px;color:var(--text-1);font-weight:600;}
.article-content tbody td:last-child{border-right:1px solid var(--line);border-radius:0 12px 12px 0;}
.article-content code{font-family:var(--mono);font-size:.92em;background:rgba(255,255,255,.06);padding:2px 6px;border-radius:6px;color:var(--primary);}
.article-content hr{border:0;border-top:1px solid var(--line);margin:2.4em 0;}

.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;
  padding:56px 24px;border:1px dashed var(--line-strong);border-radius:var(--r-card);background:var(--bg-1);
}
.empty-state i{font-size:30px;color:var(--text-3);}
.empty-state h3{font-size:19px;}
.empty-state p{margin:0;font-size:14.5px;color:var(--text-3);max-width:44ch;}

/* ============ 文末 ============ */
.article-foot{max-width:800px;margin-top:44px;padding-top:26px;border-top:1px solid var(--line);}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.tag-list .label{font-size:13px;color:var(--text-3);margin-right:4px;}
.tag{display:inline-flex;align-items:center;padding:5px 13px;border-radius:var(--r-pill);font-size:12.5px;color:var(--text-2);background:rgba(255,255,255,.05);border:1px solid var(--line);transition:border-color .2s ease,color .2s ease,transform .2s ease;}
.tag:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.share-row{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-top:22px;}
.share-group{display:flex;align-items:center;gap:10px;}
.share-group .label{font-size:13px;color:var(--text-3);}
.share-btn{
  width:38px;height:38px;display:grid;place-items:center;border-radius:10px;
  border:1px solid var(--line);color:var(--text-2);background:rgba(255,255,255,.04);
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.share-btn:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}

/* ============ 相关推荐 ============ */
.related{margin-top:52px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px;}
.section-head h2{font-size:clamp(20px,2.4vw,26px);}
.section-head p{margin:6px 0 0;font-size:14px;color:var(--text-3);}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.rel-card{
  display:flex;gap:14px;padding:14px;border-radius:var(--r-card);background:var(--bg-2);
  border:1px solid var(--line);box-shadow:var(--shadow-1);
  transition:transform .22s cubic-bezier(.2,.7,.2,1),border-color .22s ease,box-shadow .22s ease;
}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(18,230,160,.35);box-shadow:var(--shadow-2);}
.rel-thumb{flex:0 0 92px;width:92px;height:74px;border-radius:10px;overflow:hidden;border:1px solid var(--line);}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.rel-card:hover .rel-thumb img{transform:scale(1.05);}
.rel-body{min-width:0;display:flex;flex-direction:column;gap:6px;}
.rel-body h3{font-size:14.5px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-body .rel-meta{font-family:var(--mono);font-size:11.5px;color:var(--text-3);margin-top:auto;}

/* ============ 侧栏 ============ */
.aside-inner{position:sticky;top:72px;display:grid;gap:18px;}
.panel{
  border-radius:var(--r-card);padding:20px;background:var(--glass);
  border:1px solid var(--line);backdrop-filter:blur(10px) saturate(120%);
}
.panel-solid{background:var(--bg-2);backdrop-filter:none;}
.panel h3{font-size:15px;display:flex;align-items:center;gap:8px;margin-bottom:14px;}
.panel h3 i{color:var(--primary);font-size:14px;}
.entry-list{display:flex;flex-direction:column;gap:2px;}
.entry-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 12px;border-radius:9px;font-size:14px;color:var(--text-2);
  transition:background .2s ease,color .2s ease,padding-left .2s ease;
}
.entry-list a span{display:inline-flex;align-items:center;gap:9px;min-width:0;}
.entry-list a i.ico{color:var(--text-3);font-size:13px;width:16px;text-align:center;}
.entry-list a i.go{font-size:11px;color:var(--text-3);transition:transform .2s ease,color .2s ease;}
.entry-list a:hover{background:rgba(255,255,255,.05);color:var(--text-1);padding-left:15px;}
.entry-list a:hover i.ico,.entry-list a:hover i.go{color:var(--primary);}
.entry-list a:hover i.go{transform:translateX(3px);}
.panel-note{font-size:13px;color:var(--text-3);line-height:1.8;margin:0 0 14px;}
.stat-line{display:flex;align-items:baseline;justify-content:space-between;padding:9px 0;border-bottom:1px dashed var(--line);font-size:13.5px;color:var(--text-3);}
.stat-line:last-of-type{border-bottom:0;}
.stat-line b{font-family:var(--mono);font-size:17px;color:var(--primary);font-weight:700;}

/* ============ CTA ============ */
.cta-band{
  position:relative;margin:72px 0 0;padding:56px 32px;border-radius:var(--r-card);text-align:center;overflow:hidden;
  background:radial-gradient(58% 100% at 50% 0,rgba(18,230,160,.15),transparent 70%),var(--bg-1);
  border:1px solid var(--line);
}
.cta-band h2{font-size:clamp(22px,2.8vw,30px);}
.cta-band p{max-width:640px;margin:14px auto 26px;font-size:15px;color:var(--text-2);}
.cta-actions{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.footer{position:relative;z-index:1;margin-top:72px;background:var(--bg-1);border-top:1px solid var(--line);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;padding:52px 0 34px;}
.footer-logo{font-size:17px;font-weight:700;color:var(--text-1);margin-bottom:14px;}
.footer-brand p{margin:0;font-size:14px;color:var(--text-3);line-height:1.85;max-width:38ch;}
.footer-col h4{font-size:14px;color:var(--text-1);margin-bottom:14px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:9px;}
.footer-col li{font-size:13.5px;color:var(--text-3);}
.footer-col a{font-size:13.5px;color:var(--text-3);transition:color .2s ease,padding-left .2s ease;}
.footer-col a:hover{color:var(--primary);padding-left:4px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  padding:18px 0 26px;border-top:1px solid var(--line);font-size:12.5px;color:var(--text-3);
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.7,.2,1);}
.reveal.in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1439px){
  .article-layout{gap:30px;}
}
@media (max-width:1279px){
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (min-width:992px) and (max-width:1199px){
  :root{--sidebar-w:88px;}
  .logo-text,.logo-sub,.nav-txt,.nav-label,.side-search,.side-foot{display:none;}
  .logo{justify-content:center;padding-bottom:14px;}
  .nav-item{justify-content:center;padding:13px 0;}
  .nav-item::after{
    content:attr(data-tip);position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%) scale(.96);
    background:var(--bg-2);color:var(--text-1);border:1px solid var(--line-strong);border-radius:8px;
    padding:6px 12px;font-size:13px;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .18s ease,transform .18s ease;
    box-shadow:var(--shadow-1);
  }
  .nav-item:hover::after{opacity:1;transform:translateY(-50%) scale(1);}
  .side-cta .btn span{display:none;}
  .side-cta .btn{padding:12px 0;width:100%;}
}
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .aside-inner{position:static;grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:991px){
  .sidebar{transform:translateX(-100%);transition:transform .3s cubic-bezier(.2,.7,.2,1);width:280px;}
  body.nav-open .sidebar{transform:translateX(0);}
  .sidebar .logo-text,.sidebar .logo-sub,.sidebar .nav-txt,.sidebar .side-search,.sidebar .side-foot,.sidebar .nav-label{display:block;}
  .sidebar .side-search{display:block;}
  .sidebar .logo{justify-content:flex-start;}
  .sidebar .nav-item{justify-content:flex-start;padding:11px 12px;}
  .sidebar .nav-item::after{display:none;}
  .main{margin-left:0;padding-top:56px;}
  .mobile-bar{display:flex;}
  .topbar{top:56px;}
  .article-layout{padding-top:22px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;padding:40px 0 26px;}
}
@media (max-width:767px){
  .rel-grid{grid-template-columns:minmax(0,1fr);}
  .aside-inner{grid-template-columns:minmax(0,1fr);}
  .article-content{font-size:16.5px;}
  .cta-band{padding:40px 20px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:576px){
  .container{padding:0 16px;}
  .article-head h1{font-size:23px;}
  .article-cover{clip-path:none;border-radius:14px;}
  .crumbs em{max-width:18ch;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .share-row{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --bg-0:#070C0F;
  --bg-1:#0C141A;
  --bg-2:#101B22;
  --primary:#12E6A0;
  --primary-deep:#06A176;
  --accent:#FF7A2F;
  --text-1:#F2F6F7;
  --text-2:#A9B8BE;
  --text-3:#6D8087;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --glass:rgba(255,255,255,.045);
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-1:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-2:0 18px 46px -20px rgba(18,230,160,.35);
  --sidebar-w:260px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{color:var(--text-1);margin:0;line-height:1.3;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
input{font-family:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.num,.time{font-variant-numeric:tabular-nums;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}

.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%}

/* ============ 侧栏导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  z-index:60;display:flex;flex-direction:column;gap:22px;
  padding:26px 18px 22px;
  background:linear-gradient(180deg,#0B1318 0%,#080E12 100%);
  border-right:1px solid var(--line);
  backdrop-filter:blur(10px) saturate(120%);
  transition:transform .3s var(--ease);
}
.sidebar::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:240px;pointer-events:none;
  background:radial-gradient(60% 100% at 50% 100%,rgba(18,230,160,.10),transparent 72%);
}
.brand{display:flex;align-items:center;gap:11px;padding:4px 8px;position:relative;z-index:1}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04140D;font-weight:800;font-size:15px;letter-spacing:-.02em;
  box-shadow:0 0 20px rgba(18,230,160,.35);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-name{color:var(--text-1);font-weight:700;font-size:15px;white-space:nowrap}
.brand-sub{font-size:11px;color:var(--text-3);letter-spacing:.14em}

.side-nav{flex:1;position:relative;z-index:1}
.nav-list{display:flex;flex-direction:column;gap:4px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:10px;
  color:var(--text-2);font-size:14.5px;font-weight:500;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-item i{width:20px;text-align:center;font-size:15px;color:var(--text-3);transition:color .2s var(--ease)}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--text-1)}
.nav-item:hover i{color:var(--primary)}
.nav-item.active{
  color:var(--text-1);
  background:linear-gradient(90deg,rgba(18,230,160,.18),rgba(18,230,160,0));
}
.nav-item.active::before{
  content:"";position:absolute;left:-18px;top:50%;transform:translateY(-50%);
  width:3px;height:20px;border-radius:0 3px 3px 0;background:var(--primary);
  box-shadow:0 0 10px rgba(18,230,160,.8);
}
.nav-item.active i{color:var(--primary);text-shadow:0 0 8px rgba(18,230,160,.75)}

.side-bottom{display:flex;flex-direction:column;gap:12px;position:relative;z-index:1}
.side-search{
  position:relative;display:flex;align-items:center;
  background:var(--glass);border:1px solid var(--line);border-radius:10px;
  padding:0 12px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.side-search i{color:var(--text-3);font-size:13px}
.side-search input{
  flex:1;background:transparent;border:0;outline:none;color:var(--text-1);
  font-size:13.5px;padding:11px 8px;min-width:0;
}
.side-search input::placeholder{color:var(--text-3)}
.side-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(18,230,160,.14)}
.side-foot{font-size:11.5px;color:var(--text-3);line-height:1.6}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);
  font-size:14.5px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease),background .22s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04140D;box-shadow:0 10px 26px -14px rgba(18,230,160,.75);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px -12px rgba(18,230,160,.85),0 0 0 1px rgba(18,230,160,.5)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 16px -12px rgba(18,230,160,.6)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text-1)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-block{width:100%}
.btn-sm{padding:9px 16px;font-size:13.5px}

.link-more{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600;
  transition:gap .2s var(--ease)
}
.link-more:hover{gap:11px;text-decoration:underline;text-underline-offset:3px}

/* ============ 移动端顶栏 ============ */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:70;
  align-items:center;gap:14px;padding:0 16px;
  background:rgba(8,14,18,.94);border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
}
.mobile-brand{color:var(--text-1);font-weight:700;font-size:15px}
.burger{
  width:40px;height:40px;flex:0 0 40px;display:grid;place-content:center;gap:4px;
  background:var(--glass);border:1px solid var(--line);border-radius:10px;cursor:pointer;
}
.burger span{display:block;width:16px;height:2px;border-radius:2px;background:var(--text-1);transition:.2s var(--ease)}
.burger:hover span{background:var(--primary)}
.drawer-mask{
  display:none;position:fixed;inset:0;z-index:55;background:rgba(0,0,0,.6);
  opacity:0;transition:opacity .25s var(--ease);
}
.drawer-mask.show{display:block;opacity:1}

/* ============ 主内容 ============ */
.main{margin-left:var(--sidebar-w);min-height:100vh;position:relative;z-index:1}
.sticky-bar{
  position:sticky;top:0;z-index:40;height:48px;
  display:flex;align-items:center;
  background:rgba(9,15,19,.86);border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);font-size:13px;color:var(--text-3);
}
.sticky-bar .container{display:flex;align-items:center;justify-content:space-between;gap:16px}
.sticky-bar .cur{color:var(--text-1);font-weight:600}
.sticky-bar .time{font-size:12.5px;color:var(--text-3)}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:58px 0 66px;background:#060A0D}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;opacity:.42;
}
.hero-mask{
  position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(7,12,15,.86) 0%,rgba(7,12,15,.92) 55%,var(--bg-0) 100%),
    radial-gradient(52% 62% at 80% 26%,rgba(18,230,160,.16),transparent 70%);
}
.hero-grid-lines{
  position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:72px 72px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
}
.hero .container{position:relative;z-index:2}
.crumbs{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--text-3);margin-bottom:22px}
.crumbs a:hover{color:var(--primary)}
.crumbs .cur{color:var(--text-2)}
.hero-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:center}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--glass);border:1px solid var(--line-strong);
  color:var(--primary);font-size:12px;letter-spacing:.04em;
  backdrop-filter:blur(10px) saturate(120%);
}
.hero h1{
  font-size:clamp(30px,4.2vw,52px);line-height:1.15;letter-spacing:-.01em;
  margin:18px 0 16px;
}
.hero-sub{font-size:16.5px;color:var(--text-2);max-width:560px;line-height:1.9}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:14px 34px;margin-top:34px;
  padding-top:24px;border-top:1px solid var(--line);
}
.hero-facts li{display:flex;flex-direction:column;gap:2px}
.hero-facts b{color:var(--primary);font-size:20px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:-.02em}
.hero-facts span{font-size:12.5px;color:var(--text-3)}
.hero-card{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line-strong);box-shadow:var(--shadow-1);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 30px),calc(100% - 30px) 100%,0 100%);
}
.hero-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-card figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:16px 18px;
  background:linear-gradient(180deg,transparent,rgba(6,10,13,.92));
  font-size:13px;color:var(--text-2);
}

/* ============ 锚点导航 ============ */
.anchor-nav{
  position:sticky;top:48px;z-index:35;
  background:rgba(10,17,21,.9);border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
}
.anchor-inner{display:flex;gap:26px;overflow-x:auto;padding:0 32px;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-inner a{
  padding:15px 0;font-size:14px;color:var(--text-3);white-space:nowrap;
  border-bottom:2px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease);
}
.anchor-inner a:hover{color:var(--text-1);border-bottom-color:rgba(18,230,160,.5)}

/* ============ 板块 ============ */
.section{padding:96px 0}
.section.alt{background:var(--bg-1)}
.section-head{max-width:780px;margin-bottom:46px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;color:var(--primary);font-weight:600;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--primary);border-radius:2px}
.section-head h2{font-size:clamp(24px,3vw,34px);margin:14px 0 14px}
.section-head p{font-size:15.5px;color:var(--text-2)}

/* ============ 图文交错 ============ */
.zig{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;padding:44px 0;border-top:1px solid var(--line)}
.zig:first-of-type{border-top:0;padding-top:0}
.zig.reverse .zig-media{order:2}
.zig-media{position:relative}
.zig-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-card);border:1px solid var(--line);box-shadow:var(--shadow-1);
}
.zig-media::after{
  content:"";position:absolute;left:20px;right:20px;bottom:-10px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(18,230,160,.5),transparent);
}
.zig-num{
  display:inline-block;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:13px;letter-spacing:.16em;color:var(--accent);margin-bottom:12px;
}
.zig-body h3{font-size:22px;margin-bottom:14px}
.zig-body p{font-size:15.5px;margin-bottom:18px}

.tick-list{display:flex;flex-direction:column;gap:11px}
.tick-list li{display:flex;gap:11px;font-size:14.5px;color:var(--text-2);line-height:1.75}
.tick-list i{color:var(--primary);font-size:13px;margin-top:7px}

/* ============ 卡片体系 ============ */
.card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(18,230,160,.32);box-shadow:var(--shadow-2)}

.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}

.entry-card{display:flex;flex-direction:column;gap:14px}
.entry-card .icon-box{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:rgba(18,230,160,.1);border:1px solid rgba(18,230,160,.28);
  color:var(--primary);font-size:18px;
}
.entry-card h3{font-size:17.5px}
.entry-card p{font-size:14.5px}
.entry-card ul{display:flex;flex-direction:column;gap:8px;margin-top:2px}
.entry-card ul li{font-size:13.8px;color:var(--text-3);display:flex;gap:8px}
.entry-card ul li::before{content:"·";color:var(--primary);font-weight:700}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.04em;line-height:1.6;
}
.badge-green{background:rgba(18,230,160,.12);color:var(--primary);border:1px solid rgba(18,230,160,.3)}
.badge-orange{background:rgba(255,122,47,.12);color:var(--accent);border:1px solid rgba(255,122,47,.32)}
.badge-grey{background:rgba(255,255,255,.05);color:var(--text-3);border:1px solid var(--line)}

/* ============ 准备清单 ============ */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.check-item{
  display:flex;gap:16px;padding:22px 24px;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.check-item:hover{border-color:rgba(18,230,160,.28);transform:translateY(-3px)}
.check-idx{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;
  color:var(--accent);letter-spacing:.1em;flex:0 0 28px;padding-top:4px;
}
.check-item h3{font-size:16.5px;margin-bottom:8px}
.check-item p{font-size:14.5px}

/* ============ FAQ ============ */
.faq{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  backdrop-filter:blur(10px) saturate(120%);
  overflow:hidden;transition:border-color .22s var(--ease)
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item.open{border-color:rgba(18,230,160,.36)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;background:transparent;border:0;cursor:pointer;
  color:var(--text-1);font-size:16px;font-weight:600;text-align:left;
}
.faq-q .plus{
  flex:0 0 22px;width:22px;height:22px;position:relative;transition:transform .25s var(--ease)
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q .plus::before{width:12px;height:2px}
.faq-q .plus::after{width:2px;height:12px;transition:opacity .25s var(--ease)}
.faq-item.open .faq-q .plus{transform:rotate(180deg)}
.faq-item.open .faq-q .plus::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq-item.open .faq-a{max-height:420px}
.faq-a-inner{
  padding:0 22px 20px;font-size:15px;color:var(--text-2);
  border-left:2px solid var(--primary);margin:0 22px 20px;padding-left:16px;
}

/* ============ CTA ============ */
.cta-band{position:relative;overflow:hidden;padding:76px 0;background:#050A0C;border-top:1px solid var(--line)}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(48% 90% at 50% 108%,rgba(18,230,160,.2),transparent 72%);
}
.cta-band .container{position:relative;z-index:2;text-align:center;max-width:820px}
.cta-band h2{font-size:clamp(23px,2.8vw,32px);margin-bottom:14px}
.cta-band p{font-size:15.5px;margin-bottom:30px}
.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.footer{background:#050A0C;border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px}
.footer-logo{color:var(--text-1);font-size:17px;font-weight:700;margin-bottom:14px}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.85;max-width:360px}
.footer-col h4{font-size:14.5px;color:var(--text-1);margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:13.8px;color:var(--text-3)}
.footer-col a{color:var(--text-3);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  border-top:1px solid var(--line);margin-top:48px;padding:20px 0 28px;
  font-size:12.5px;color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (min-width:992px) and (max-width:1199px){
  :root{--sidebar-w:88px}
  .sidebar{padding:22px 12px;align-items:center}
  .brand{justify-content:center;padding:0}
  .brand-text{display:none}
  .brand-mark{width:38px;height:38px;flex:0 0 38px}
  .nav-item{justify-content:center;padding:13px 0;gap:0}
  .nav-item .nav-text{display:none}
  .nav-item.active::before{left:-12px}
  .side-search{display:none}
  .side-cta span{display:none}
  .side-cta{padding:12px 0;width:44px}
  .side-foot{display:none}
}
@media (max-width:1199px){
  .container{padding:0 24px}
  .anchor-inner{padding:0 24px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:991px){
  .mobile-bar{display:flex}
  .main{margin-left:0;padding-top:56px}
  .sidebar{transform:translateX(-100%);width:280px;box-shadow:0 0 60px rgba(0,0,0,.7)}
  .sidebar.open{transform:translateX(0)}
  .sticky-bar{display:none}
  .anchor-nav{top:56px}
  .hero{padding:44px 0 52px}
  .hero-layout{grid-template-columns:1fr;gap:36px}
  .hero-card{max-width:560px}
  .section{padding:64px 0}
  .zig{grid-template-columns:1fr;gap:26px;padding:34px 0}
  .zig.reverse .zig-media{order:0}
  .check-grid{grid-template-columns:1fr}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .anchor-inner{padding:0 18px;gap:20px}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;gap:8px}
  .hero-actions .btn{flex:1 1 100%}
  .cta-actions .btn{flex:1 1 100%}
  .section{padding:52px 0}
  .section-head{margin-bottom:32px}
}
@media (max-width:520px){
  body{font-size:15.5px}
  .hero h1{font-size:29px}
  .hero-facts{gap:14px 24px}
  .card{padding:20px}
  .check-item{padding:18px}
  .faq-q{padding:16px;font-size:15px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --bg-0:#070C0F;
  --bg-1:#0C141A;
  --bg-2:#101B22;
  --primary:#12E6A0;
  --primary-deep:#06A176;
  --accent:#FF7A2F;
  --text-1:#F2F6F7;
  --text-2:#A9B8BE;
  --text-3:#6D8087;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --glass:rgba(255,255,255,.045);
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-1:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-2:0 20px 46px -22px rgba(18,230,160,.42);
  --sidebar-w:260px;
  --gap:24px;
  --ease:cubic-bezier(.2,.7,.2,1);
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
a:hover{color:var(--primary)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:700;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
strong{color:var(--text-1)}
::selection{background:rgba(18,230,160,.28);color:#fff}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

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

/* ---------- 移动端顶部栏 ---------- */
.mobile-bar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:58px;
  z-index:70;
  align-items:center;
  gap:14px;
  padding:0 16px;
  background:rgba(7,12,15,.92);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px) saturate(120%);
}
.mobile-brand{font-size:16px;font-weight:700;color:var(--text-1)}
.burger{
  width:40px;height:40px;
  display:flex;flex-direction:column;
  justify-content:center;gap:5px;
  padding:0 9px;
  border:1px solid var(--line);
  border-radius:10px;
  background:var(--glass);
}
.burger span{display:block;height:1.5px;background:var(--text-1);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

.scrim{
  position:fixed;inset:0;
  background:rgba(0,0,0,.6);
  opacity:0;visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s;
  z-index:59;
}
.scrim.show{opacity:1;visibility:visible}

/* ---------- 左侧导航 ---------- */
.sidebar{
  position:fixed;
  top:0;left:0;
  width:var(--sidebar-w);
  height:100vh;
  z-index:60;
  background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.012)),var(--bg-1);
  border-right:1px solid var(--line);
  overflow-y:auto;
  padding:26px 18px 22px;
  display:flex;
  flex-direction:column;
  gap:22px;
  transition:transform .26s var(--ease);
}
.brand{
  display:flex;align-items:center;gap:11px;
  padding:4px 6px;
  font-weight:700;color:var(--text-1);
  font-size:15.5px;letter-spacing:-.01em;
}
.brand:hover{color:var(--text-1)}
.brand-mark{
  flex:0 0 36px;
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(140deg,var(--primary),var(--primary-deep));
  color:#04231A;
  font-weight:800;font-size:17px;
  box-shadow:0 10px 22px -12px rgba(18,230,160,.75);
}
.brand-text{line-height:1.35}

.nav{display:flex;flex-direction:column;gap:4px}
.nav-label{
  font-size:11.5px;letter-spacing:.14em;
  color:var(--text-3);
  padding:0 10px 8px;
  text-transform:uppercase;
}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:11px;
  padding:11px 12px 11px 14px;
  border-radius:10px;
  font-size:14.5px;
  color:var(--text-2);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-item svg{flex:0 0 20px;width:20px;height:20px;stroke:currentColor;stroke-width:1.5;fill:none;stroke-linecap:round;stroke-linejoin:round;transition:color .2s var(--ease),filter .2s var(--ease)}
.nav-item::before{
  content:"";
  position:absolute;left:0;top:9px;bottom:9px;
  width:3px;border-radius:0 3px 3px 0;
  background:var(--primary);
  opacity:0;transform:scaleY(.4);
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--text-1)}
.nav-item:hover svg{color:var(--primary)}
.nav-item.active{
  color:var(--text-1);
  background:linear-gradient(90deg,rgba(18,230,160,.16),rgba(18,230,160,.02));
}
.nav-item.active::before{opacity:1;transform:scaleY(1)}
.nav-item.active svg{color:var(--primary);filter:drop-shadow(0 0 8px rgba(18,230,160,.55))}

.search{margin-top:2px}
.search-label{display:block;font-size:11.5px;letter-spacing:.14em;color:var(--text-3);padding:0 10px 8px}
.search-box{
  display:flex;align-items:center;gap:8px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:10px;
  padding:9px 11px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(18,230,160,.14)}
.search-box svg{width:17px;height:17px;stroke:var(--text-3);stroke-width:1.6;fill:none;stroke-linecap:round}
.search-box input{
  flex:1;min-width:0;
  background:transparent;border:0;outline:none;
  color:var(--text-1);font-size:14px;
}
.search-box input::placeholder{color:var(--text-3)}

.sidebar-cta{margin-top:auto;justify-content:center;width:100%}
.sidebar-foot{font-size:11.5px;color:var(--text-3);line-height:1.7;padding:0 6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn svg{width:17px;height:17px;stroke:currentColor;stroke-width:1.7;fill:none;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s var(--ease)}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04231A;
  box-shadow:0 14px 30px -18px rgba(18,230,160,.9);
}
.btn-primary:hover{color:#04231A;transform:translateY(-2px);box-shadow:var(--shadow-2),0 0 0 1px rgba(18,230,160,.45)}
.btn-primary:hover svg{transform:translateY(2px)}
.btn-line{
  border-color:var(--line-strong);
  color:var(--text-1);
  background:rgba(255,255,255,.02);
}
.btn-line:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-ghost{padding:10px 4px;color:var(--text-2);font-weight:600}
.btn-ghost:hover{color:var(--primary)}
.btn-ghost svg{width:16px;height:16px;stroke:currentColor;stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round}
.btn-ghost:hover svg{transform:translateX(4px)}
.btn:active{transform:translateY(1px);box-shadow:none}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;
  border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.04em;
  border:1px solid transparent;
}
.badge-primary{background:rgba(18,230,160,.13);color:var(--primary);border-color:rgba(18,230,160,.28)}
.badge-accent{background:rgba(255,122,47,.13);color:var(--accent);border-color:rgba(255,122,47,.3)}
.badge-plain{background:rgba(255,255,255,.05);color:var(--text-3);border-color:var(--line)}

/* ---------- 主区域 ---------- */
.main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}

.topbar{
  position:sticky;top:0;z-index:40;
  height:48px;
  display:flex;align-items:center;
  background:rgba(7,12,15,.72);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px) saturate(120%);
}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px}
.crumbs{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--text-3);min-width:0}
.crumbs a{color:var(--text-3)}
.crumbs a:hover{color:var(--primary)}
.crumbs em{font-style:normal;color:var(--text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.crumbs span{color:rgba(255,255,255,.22)}
.topbar-meta{font-family:var(--mono);font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums;white-space:nowrap}

/* ---------- 页头 ---------- */
.page-hero{position:relative;padding:78px 0 64px;overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  filter:saturate(85%);
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,15,.86),rgba(7,12,15,.94) 62%,var(--bg-0));
}
.page-hero-glow{
  position:absolute;
  right:-8%;top:-24%;
  width:52%;height:120%;
  background:radial-gradient(circle at 60% 40%,rgba(18,230,160,.14),transparent 62%);
  pointer-events:none;
}
.page-hero-grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.5;
  mask-image:radial-gradient(circle at 70% 30%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 70% 30%,#000,transparent 78%);
}
.page-hero-inner{position:relative;z-index:2}
.page-hero h1{
  font-size:clamp(30px,4.2vw,52px);
  line-height:1.15;
  margin:18px 0 0;
  max-width:16em;
}
.lead{
  margin-top:20px;
  max-width:660px;
  font-size:16.5px;
  color:var(--text-2);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-meta{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:14px;
  margin-top:38px;
  max-width:660px;
}
.hero-meta li{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:12px;
  padding:14px 16px;
  backdrop-filter:blur(10px) saturate(120%);
}
.hero-meta b{
  display:block;
  font-family:var(--mono);
  font-size:22px;line-height:1.2;
  color:var(--text-1);
  font-variant-numeric:tabular-nums;
}
.hero-meta span{font-size:12px;color:var(--text-3);letter-spacing:.04em}

/* ---------- 锚点导航 ---------- */
.subnav{
  position:sticky;top:48px;z-index:35;
  background:rgba(9,15,19,.9);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px) saturate(120%);
}
.subnav .container{display:flex;align-items:center;gap:8px;overflow-x:auto;padding-top:11px;padding-bottom:11px;scrollbar-width:none}
.subnav .container::-webkit-scrollbar{display:none}
.subnav a{
  flex:0 0 auto;
  padding:7px 15px;
  border-radius:var(--r-pill);
  font-size:13.5px;
  color:var(--text-2);
  border:1px solid var(--line);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.subnav a:hover,.subnav a.active{color:var(--primary);border-color:rgba(18,230,160,.4);background:rgba(18,230,160,.08)}

/* ---------- 板块 ---------- */
.section{padding:88px 0}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{margin-bottom:44px;max-width:760px}
.section-head .badge{margin-bottom:16px}
.section-head h2{font-size:clamp(24px,3vw,34px)}
.section-head p{margin-top:14px;font-size:15.5px;color:var(--text-2)}
.section-head-center{text-align:center;margin-left:auto;margin-right:auto}

/* ---------- 对比信息卡 ---------- */
.compare-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.compare-card{
  position:relative;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 24px 24px;
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
  display:flex;flex-direction:column;
  clip-path:polygon(0 0,calc(100% - 18px) 0,100% 18px,100% 100%,0 100%);
}
.compare-card:hover{transform:translateY(-4px);border-color:rgba(18,230,160,.35);box-shadow:var(--shadow-2)}
.compare-card h3{font-size:19px;margin-bottom:8px}
.compare-card .os{
  font-family:var(--mono);font-size:12px;color:var(--text-3);
  letter-spacing:.06em;text-transform:uppercase;margin-bottom:14px;
}
.compare-card .thumb{
  border-radius:12px;overflow:hidden;
  border:1px solid var(--line);
  margin-bottom:18px;
  aspect-ratio:16/10;
  background:var(--bg-1);
}
.compare-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .22s var(--ease)}
.compare-card:hover .thumb img{transform:scale(1.03)}
.spec{display:flex;flex-direction:column;gap:11px;margin-top:4px}
.spec li{display:flex;gap:10px;font-size:14px;line-height:1.7}
.spec li b{flex:0 0 68px;color:var(--text-3);font-weight:400;font-size:13px}
.spec li span{color:var(--text-2);min-width:0}
.compare-card .btn{margin-top:22px;width:100%}

/* ---------- 编号步骤流 ---------- */
.step-list{display:flex;flex-direction:column;gap:16px;counter-reset:step}
.step{
  display:grid;
  grid-template-columns:74px 1fr;
  gap:22px;
  align-items:start;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px 26px;
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.step:hover{transform:translateX(4px);border-color:rgba(18,230,160,.32)}
.step-num{
  font-family:var(--mono);
  font-size:26px;font-weight:700;
  color:rgba(255,255,255,.16);
  line-height:1;
  padding-top:4px;
  font-variant-numeric:tabular-nums;
  transition:color .22s var(--ease);
}
.step:hover .step-num{color:var(--primary)}
.step-body h3{font-size:18px;margin-bottom:8px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.step-body p{font-size:15px;color:var(--text-2)}
.step-note{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:12px;
  font-size:13px;
  color:var(--accent);
}
.step-note svg{width:15px;height:15px;stroke:currentColor;stroke-width:1.7;fill:none;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 双列图文 + 更新记录 ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.split-media{
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-1);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 22px),calc(100% - 22px) 100%,0 100%);
  background:var(--bg-2);
}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .22s var(--ease)}
.split-media:hover img{transform:scale(1.03)}
.check-list{display:flex;flex-direction:column;gap:14px;margin-top:26px}
.check-list li{display:flex;gap:12px;font-size:15px;line-height:1.75}
.check-list .dot{
  flex:0 0 22px;width:22px;height:22px;
  margin-top:5px;
  border-radius:50%;
  display:grid;place-items:center;
  background:rgba(18,230,160,.14);
  border:1px solid rgba(18,230,160,.32);
}
.check-list .dot svg{width:12px;height:12px;stroke:var(--primary);stroke-width:2.2;fill:none;stroke-linecap:round;stroke-linejoin:round}

.log-list{display:flex;flex-direction:column;gap:2px;margin-top:30px}
.log-item{
  display:grid;
  grid-template-columns:110px 1fr;
  gap:20px;
  padding:18px 0;
  border-top:1px solid var(--line);
}
.log-item:last-child{border-bottom:1px solid var(--line)}
.log-date{
  font-family:var(--mono);
  font-size:13px;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  padding-top:2px;
}
.log-body h4{font-size:15.5px;margin-bottom:6px}
.log-body p{font-size:14px;color:var(--text-3)}

/* ---------- 卡片清单 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.card{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
  display:flex;flex-direction:column;gap:12px;
}
.card:hover{transform:translateY(-4px);border-color:rgba(18,230,160,.3);box-shadow:var(--shadow-2)}
.card-ico{
  width:42px;height:42px;
  border-radius:12px;
  display:grid;place-items:center;
  background:rgba(18,230,160,.1);
  border:1px solid rgba(18,230,160,.26);
}
.card-ico svg{width:21px;height:21px;stroke:var(--primary);stroke-width:1.6;fill:none;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:17px}
.card p{font-size:14.5px;color:var(--text-2)}
.card .card-foot{
  margin-top:auto;
  padding-top:6px;
  font-size:13px;
  color:var(--text-3);
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:12px;max-width:920px;margin:0 auto}
.acc-item{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  backdrop-filter:blur(10px) saturate(120%);
  overflow:hidden;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.acc-item[open]{border-color:rgba(18,230,160,.36);background:rgba(18,230,160,.05)}
.acc-item summary{
  position:relative;
  list-style:none;
  cursor:pointer;
  padding:19px 58px 19px 24px;
  font-size:16px;font-weight:600;
  color:var(--text-1);
  transition:color .2s var(--ease);
}
.acc-item summary::-webkit-details-marker{display:none}
.acc-item summary::after{
  content:"+";
  position:absolute;right:22px;top:50%;
  transform:translateY(-50%);
  font-family:var(--mono);
  font-size:20px;line-height:1;
  color:var(--primary);
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.acc-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg)}
.acc-item summary:hover{color:var(--primary)}
.acc-body{
  padding:0 24px 22px;
  font-size:15px;
  color:var(--text-2);
  border-left:3px solid var(--primary);
  margin:0 0 0 0;
  padding-left:21px;
}
.acc-item[open] .acc-body{margin-left:24px;margin-right:24px;padding-left:18px;padding-right:0}

/* ---------- CTA ---------- */
.cta-band{position:relative;padding:92px 0;overflow:hidden;background:var(--bg-1);border-top:1px solid var(--line)}
.cta-band::before{
  content:"";
  position:absolute;left:50%;top:50%;
  width:70%;height:150%;
  transform:translate(-50%,-50%);
  background:radial-gradient(circle at 50% 50%,rgba(18,230,160,.16),transparent 62%);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;text-align:center;max-width:760px;margin:0 auto}
.cta-inner h2{font-size:clamp(24px,3vw,34px)}
.cta-inner p{margin-top:16px;font-size:15.5px}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;margin-top:32px}

/* ---------- 页脚 ---------- */
.footer{background:var(--bg-0);border-top:1px solid var(--line);padding:70px 0 30px;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}
.footer-logo{
  font-size:17px;font-weight:700;color:var(--text-1);
  margin-bottom:16px;
  display:inline-flex;align-items:center;gap:9px;
}
.footer-logo::before{
  content:"";
  width:9px;height:9px;border-radius:3px;
  background:linear-gradient(140deg,var(--primary),var(--primary-deep));
  box-shadow:0 0 12px rgba(18,230,160,.7);
}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.9;max-width:340px}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text-1)}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col li{font-size:14px;color:var(--text-3)}
.footer-col a{color:var(--text-2)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:52px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}
.stagger > *{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.stagger.in > *{opacity:1;transform:none}
.stagger.in > *:nth-child(1){transition-delay:0ms}
.stagger.in > *:nth-child(2){transition-delay:60ms}
.stagger.in > *:nth-child(3){transition-delay:120ms}
.stagger.in > *:nth-child(4){transition-delay:180ms}
.stagger.in > *:nth-child(5){transition-delay:240ms}
.stagger.in > *:nth-child(6){transition-delay:300ms}

/* ---------- 断点 ---------- */
@media (max-width:1439px){
  .section{padding:80px 0}
}
@media (max-width:1199px){
  :root{--sidebar-w:240px}
  .split{gap:40px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:991px){
  .mobile-bar{display:flex}
  .sidebar{width:280px;transform:translateX(-100%);box-shadow:0 0 60px rgba(0,0,0,.6)}
  .sidebar.open{transform:translateX(0)}
  .main{margin-left:0;padding-top:58px}
  .topbar{top:0}
  .subnav{top:0}
  .page-hero{padding:60px 0 52px}
  .section{padding:64px 0}
  .compare-grid{grid-template-columns:1fr;gap:18px}
  .split{grid-template-columns:1fr;gap:34px}
  .split-media{order:-1}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .hero-meta{grid-template-columns:1fr;gap:10px}
  .hero-meta li{display:flex;align-items:baseline;gap:12px}
  .hero-meta b{font-size:20px}
  .card-grid{grid-template-columns:1fr}
  .step{grid-template-columns:1fr;gap:10px;padding:22px 20px}
  .step-num{font-size:22px;padding-top:0}
  .log-item{grid-template-columns:1fr;gap:6px}
  .acc-item[open] .acc-body{margin-left:18px;margin-right:16px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .btn{width:100%}
  .hero-actions{flex-direction:column;align-items:stretch}
  .btn-ghost{width:auto}
  .cta-actions{flex-direction:column;align-items:stretch}
  .crumbs{font-size:12px}
  .topbar-meta{display:none}
}
@media (max-width:520px){
  body{font-size:15.5px}
  .page-hero h1{font-size:29px}
  .lead{font-size:15px}
  .section{padding:52px 0}
  .section-head{margin-bottom:30px}
  .compare-card{padding:20px 18px}
  .card{padding:20px 18px}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal,.stagger > *{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --bg-0:#070C0F;
  --bg-1:#0C141A;
  --bg-2:#101B22;
  --primary:#12E6A0;
  --primary-deep:#06A176;
  --accent:#FF7A2F;
  --text-1:#F2F6F7;
  --text-2:#A9B8BE;
  --text-3:#6D8087;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --glass:rgba(255,255,255,.045);
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-1:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-2:0 14px 36px -14px rgba(18,230,160,.38);
  --sidebar-w:260px;
  --gap:24px;
  --sec:96px;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  -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(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.5;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
h1,h2,h3,h4{color:var(--text-1);line-height:1.25;font-weight:700;}
h1{font-size:clamp(30px,4.2vw,52px);letter-spacing:-.01em;line-height:1.15;}
h2{font-size:clamp(24px,3vw,34px);letter-spacing:-.01em;}
h3{font-size:20px;}
h4{font-size:17px;}
p{color:var(--text-2);}
::selection{background:rgba(18,230,160,.28);color:#fff;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

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

/* ---------- 移动端顶部栏 ---------- */
.mobile-bar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:60px;
  z-index:80;
  align-items:center;
  gap:14px;
  padding:0 16px;
  background:rgba(7,12,15,.9);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px) saturate(120%);
  -webkit-backdrop-filter:blur(12px) saturate(120%);
}
.mobile-brand{
  font-weight:700;
  color:var(--text-1);
  font-size:16px;
  letter-spacing:.01em;
}
.burger{
  width:40px;height:40px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  gap:5px;
  border:1px solid var(--line-2);
  border-radius:var(--r-btn);
  background:var(--glass);
  transition:border-color .2s ease,background .2s ease;
}
.burger span{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px;transition:transform .25s ease,opacity .25s ease;}
.burger:hover{border-color:rgba(18,230,160,.5);}
body.nav-open .burger span:nth-child(1){transform:translateY(7px) rotate(45deg);}
body.nav-open .burger span:nth-child(2){opacity:0;}
body.nav-open .burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 左侧 App Shell ---------- */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  z-index:90;
  display:flex;
  flex-direction:column;
  padding:26px 18px 20px;
  background:linear-gradient(180deg,rgba(12,20,26,.96),rgba(7,12,15,.98));
  border-right:1px solid var(--line);
  backdrop-filter:blur(10px) saturate(120%);
  -webkit-backdrop-filter:blur(10px) saturate(120%);
  overflow-y:auto;
  transition:transform .3s cubic-bezier(.2,.7,.2,1);
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  padding:4px 10px 22px;
  border-bottom:1px solid var(--line);
  margin-bottom:20px;
}
.brand-mark{
  width:36px;height:36px;
  flex:none;
  border-radius:10px;
  background:linear-gradient(140deg,var(--primary),var(--primary-deep));
  display:flex;align-items:center;justify-content:center;
  color:#04150F;
  font-weight:800;
  font-size:16px;
  box-shadow:0 8px 22px -10px rgba(18,230,160,.7);
  clip-path:polygon(0 0,100% 0,100% 78%,82% 100%,0 100%);
}
.brand-text{display:flex;flex-direction:column;line-height:1.3;}
.brand-text b{color:var(--text-1);font-size:15px;letter-spacing:.01em;}
.brand-text small{color:var(--text-3);font-size:11px;letter-spacing:.06em;}

.side-label{
  font-size:11px;
  letter-spacing:.14em;
  color:var(--text-3);
  padding:0 12px;
  margin-bottom:10px;
  text-transform:uppercase;
}
.side-nav{display:flex;flex-direction:column;gap:4px;}
.side-nav a{
  position:relative;
  display:flex;
  align-items:center;
  gap:11px;
  padding:11px 12px;
  border-radius:var(--r-btn);
  color:var(--text-2);
  font-size:14.5px;
  transition:background .2s ease,color .2s ease;
}
.side-nav a .ico{
  width:20px;height:20px;flex:none;
  display:flex;align-items:center;justify-content:center;
  color:var(--text-3);
  transition:color .2s ease,filter .2s ease;
}
.side-nav a .ico svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.side-nav a:hover{background:rgba(255,255,255,.05);color:var(--text-1);}
.side-nav a:hover .ico{color:var(--primary);}
.side-nav a.active{
  color:var(--text-1);
  background:linear-gradient(90deg,rgba(18,230,160,.16),rgba(18,230,160,0) 82%);
}
.side-nav a.active::before{
  content:"";
  position:absolute;
  left:0;top:9px;bottom:9px;
  width:3px;
  border-radius:3px;
  background:var(--primary);
}
.side-nav a.active .ico{color:var(--primary);filter:drop-shadow(0 0 8px rgba(18,230,160,.65));}

.side-search{margin:22px 4px 16px;position:relative;}
.side-search input{
  width:100%;
  padding:11px 14px 11px 38px;
  background:var(--glass);
  border:1px solid var(--line-2);
  border-radius:var(--r-btn);
  color:var(--text-1);
  font-size:13.5px;
  outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.side-search input::placeholder{color:var(--text-3);}
.side-search input:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(18,230,160,.16);
}
.side-search svg{
  position:absolute;
  left:13px;top:50%;
  transform:translateY(-50%);
  width:16px;height:16px;
  stroke:var(--text-3);
  fill:none;stroke-width:1.6;stroke-linecap:round;
}

.side-cta{
  margin-top:auto;
  display:block;
  text-align:center;
  padding:12px 14px;
  border-radius:var(--r-btn);
  font-weight:700;
  font-size:14px;
  color:#04150F;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:var(--shadow-2);
  transition:transform .2s ease,box-shadow .25s ease;
}
.side-cta:hover{transform:translateY(-2px);box-shadow:0 16px 40px -12px rgba(18,230,160,.6);}
.side-cta:active{transform:translateY(1px);box-shadow:0 8px 20px -10px rgba(18,230,160,.5);}
.side-foot{
  margin-top:16px;
  font-size:11px;
  color:var(--text-3);
  line-height:1.7;
  padding:0 4px;
}
.backdrop{
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.6);
  z-index:85;
  opacity:0;
  visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;
}
body.nav-open .backdrop{opacity:1;visibility:visible;}

/* ---------- 主体 ---------- */
.shell{
  position:relative;
  z-index:1;
  margin-left:var(--sidebar-w);
  min-height:100vh;
}
.topbar{
  position:sticky;
  top:0;
  z-index:70;
  height:48px;
  display:flex;
  align-items:center;
  background:rgba(7,12,15,.7);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  transition:background .25s ease;
}
.topbar.is-scrolled{background:rgba(7,12,15,.95);}
.topbar .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.crumb{font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.crumb a:hover{color:var(--primary);}
.crumb .sep{opacity:.5;}
.crumb strong{color:var(--text-2);font-weight:500;}
.topbar-meta{font-family:var(--mono);font-size:12.5px;color:var(--text-3);white-space:nowrap;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  padding:76px 0 68px;
  background:
    radial-gradient(60% 70% at 82% 18%,rgba(18,230,160,.13),transparent 62%),
    linear-gradient(180deg,rgba(7,12,15,.2),var(--bg-0));
}
.hero-bg{
  position:absolute;
  inset:0;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;
  background-position:center;
  opacity:.26;
  filter:saturate(.9);
}
.hero-mask{
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,var(--bg-0) 4%,rgba(7,12,15,.86) 46%,rgba(7,12,15,.52) 100%);
}
.hero .container{position:relative;z-index:2;}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:48px;
  align-items:center;
}
.tagline{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:6px 14px 6px 10px;
  border-radius:var(--r-pill);
  background:var(--glass);
  border:1px solid var(--line-2);
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--text-2);
  margin-bottom:22px;
  backdrop-filter:blur(10px) saturate(120%);
  -webkit-backdrop-filter:blur(10px) saturate(120%);
}
.tagline .dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 10px rgba(18,230,160,.9);
  animation:pulse 2.2s ease-in-out infinite;
}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.5;transform:scale(.82);}}
.hero h1{margin-bottom:18px;}
.hero h1 em{font-style:normal;color:var(--primary);}
.hero-lead{
  font-size:16.5px;
  line-height:1.9;
  color:var(--text-2);
  max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  border-radius:var(--r-btn);
  font-size:14.5px;
  font-weight:700;
  letter-spacing:.02em;
  transition:transform .2s ease,box-shadow .25s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn-primary{
  color:#04150F;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  box-shadow:var(--shadow-2);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 42px -12px rgba(18,230,160,.62),0 0 0 1px rgba(18,230,160,.4);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 8px 20px -12px rgba(18,230,160,.5);}
.btn-ghost{
  color:var(--text-1);
  border:1px solid var(--line-2);
  background:rgba(255,255,255,.02);
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}

.hero-panel{
  position:relative;
  border-radius:var(--r-card);
  border:1px solid var(--line-2);
  background:rgba(16,27,34,.72);
  box-shadow:var(--shadow-1);
  padding:22px;
  backdrop-filter:blur(10px) saturate(120%);
  -webkit-backdrop-filter:blur(10px) saturate(120%);
  clip-path:polygon(0 0,100% 0,100% 88%,88% 100%,0 100%);
}
.hero-panel h3{font-size:16px;margin-bottom:4px;}
.hero-panel p{font-size:13px;color:var(--text-3);line-height:1.7;}
.hero-cover{
  border-radius:12px;
  overflow:hidden;
  margin-bottom:18px;
  aspect-ratio:16/10;
  border:1px solid var(--line);
}
.hero-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.2,.7,.2,1);}
.hero-panel:hover .hero-cover img{transform:scale(1.04);}
.hero-list{display:flex;flex-direction:column;gap:11px;margin-top:16px;}
.hero-list li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:13.5px;
  color:var(--text-2);
  line-height:1.65;
}
.hero-list li svg{width:17px;height:17px;flex:none;margin-top:4px;stroke:var(--primary);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}

/* ---------- 锚点条 ---------- */
.anchorbar{
  position:sticky;
  top:48px;
  z-index:60;
  background:rgba(12,20,26,.9);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.anchorbar .container{
  display:flex;
  gap:6px;
  overflow-x:auto;
  padding-top:10px;
  padding-bottom:10px;
  scrollbar-width:none;
}
.anchorbar .container::-webkit-scrollbar{display:none;}
.anchorbar a{
  flex:none;
  padding:7px 15px;
  border-radius:var(--r-pill);
  font-size:13.5px;
  color:var(--text-2);
  border:1px solid transparent;
  transition:all .2s ease;
}
.anchorbar a:hover{color:var(--primary);border-color:rgba(18,230,160,.4);background:rgba(18,230,160,.07);}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sec) 0;position:relative;}
.section.alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{max-width:720px;margin-bottom:44px;}
.sec-head .eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.16em;
  color:var(--primary);
  margin-bottom:12px;
  font-family:var(--mono);
}
.sec-head h2{margin-bottom:14px;}
.sec-head p{font-size:15.5px;line-height:1.9;}

/* ---------- 对比信息卡 ---------- */
.compare-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--gap);}
.compare-card{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px;
  box-shadow:var(--shadow-1);
  transition:transform .22s cubic-bezier(.2,.7,.2,1),border-color .22s ease,box-shadow .22s ease;
}
.compare-card:hover{transform:translateY(-4px);border-color:rgba(18,230,160,.32);box-shadow:0 22px 46px -26px rgba(0,0,0,.9);}
.compare-card .head{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.compare-card .head h3{font-size:18px;}
.badge{
  display:inline-flex;
  align-items:center;
  padding:3px 11px;
  border-radius:var(--r-pill);
  font-size:12px;
  letter-spacing:.04em;
  line-height:1.7;
}
.badge-green{background:rgba(18,230,160,.14);color:var(--primary);border:1px solid rgba(18,230,160,.28);}
.badge-orange{background:rgba(255,122,47,.14);color:var(--accent);border:1px solid rgba(255,122,47,.28);}
.badge-gray{background:rgba(255,255,255,.06);color:var(--text-3);border:1px solid var(--line-2);}
.compare-card ul{display:flex;flex-direction:column;gap:12px;margin-top:6px;}
.compare-card ul li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.75;
}
.compare-card ul li span.k{
  flex:none;
  width:6px;height:6px;
  border-radius:50%;
  margin-top:11px;
  background:var(--primary);
  box-shadow:0 0 8px rgba(18,230,160,.7);
}

/* ---------- 时间线 ---------- */
.timeline{position:relative;padding-left:6px;}
.timeline::before{
  content:"";
  position:absolute;
  left:35px;top:12px;bottom:12px;
  width:2px;
  background:linear-gradient(180deg,rgba(18,230,160,.65),rgba(18,230,160,.12));
}
.tl-item{
  position:relative;
  display:grid;
  grid-template-columns:70px minmax(0,1fr);
  gap:22px;
  padding-bottom:26px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-node{
  position:relative;
  width:38px;height:38px;
  margin-left:17px;
  border-radius:12px;
  background:linear-gradient(140deg,#0E1A21,#0A1218);
  border:1px solid rgba(18,230,160,.42);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);
  font-size:13px;
  font-weight:700;
  color:var(--primary);
  box-shadow:0 0 0 5px rgba(7,12,15,1),0 0 18px -2px rgba(18,230,160,.45);
  z-index:2;
}
.tl-card{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px 24px;
  box-shadow:var(--shadow-1);
  transition:transform .22s cubic-bezier(.2,.7,.2,1),border-color .22s ease;
}
.tl-card:hover{transform:translateY(-3px);border-color:rgba(18,230,160,.3);}
.tl-card h3{font-size:17.5px;margin-bottom:8px;}
.tl-card p{font-size:14.5px;line-height:1.85;}
.tl-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px;}
.tl-meta span{
  font-family:var(--mono);
  font-size:12.5px;
  color:var(--text-3);
  padding:3px 11px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.02);
}

/* ---------- 权益清单 ---------- */
.benefit-list{display:flex;flex-direction:column;gap:16px;}
.benefit-item{
  display:grid;
  grid-template-columns:64px minmax(0,1fr) auto;
  gap:22px;
  align-items:center;
  padding:22px 24px;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  transition:transform .22s cubic-bezier(.2,.7,.2,1),border-color .22s ease,background .22s ease;
}
.benefit-item:hover{transform:translateY(-3px);border-color:rgba(18,230,160,.3);background:#12202A;}
.benefit-no{
  font-family:var(--mono);
  font-size:26px;
  font-weight:700;
  color:var(--accent);
  line-height:1;
}
.benefit-item h3{font-size:17px;margin-bottom:6px;}
.benefit-item p{font-size:14.5px;line-height:1.8;}
.benefit-side{display:flex;flex-direction:column;align-items:flex-end;gap:8px;}
.benefit-side .val{font-family:var(--mono);font-size:15px;color:var(--primary);font-weight:700;}

/* ---------- 数据 ---------- */
.stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:var(--gap);
  padding:40px 34px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:
    linear-gradient(180deg,rgba(18,230,160,.05),transparent 70%),
    var(--bg-2);
}
.stat{position:relative;padding-right:12px;}
.stat .num{
  font-family:var(--mono);
  font-size:clamp(28px,3.4vw,40px);
  font-weight:700;
  color:var(--text-1);
  line-height:1.15;
  letter-spacing:-.02em;
}
.stat .num i{font-style:normal;font-size:16px;color:var(--primary);margin-left:3px;}
.stat .bar{
  display:block;
  width:46px;height:3px;
  margin:12px 0 10px;
  border-radius:3px;
  background:linear-gradient(90deg,var(--primary),rgba(18,230,160,.15));
  box-shadow:0 0 12px rgba(18,230,160,.55);
}
.stat p{font-size:13.5px;color:var(--text-3);line-height:1.7;}

/* ---------- 注意项 ---------- */
.notice-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.85fr);gap:44px;align-items:center;}
.notice-list{display:flex;flex-direction:column;gap:14px;margin-top:26px;}
.notice-list li{
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:16px 18px;
  background:rgba(255,122,47,.05);
  border:1px solid rgba(255,122,47,.2);
  border-radius:12px;
  font-size:14.5px;
  line-height:1.8;
}
.notice-list li svg{width:19px;height:19px;flex:none;margin-top:4px;stroke:var(--accent);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.notice-figure{
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line-2);
  box-shadow:var(--shadow-1);
  aspect-ratio:16/11;
  position:relative;
}
.notice-figure img{width:100%;height:100%;object-fit:cover;}
.notice-figure::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 45%,rgba(7,12,15,.75));
}
.notice-figure figcaption{
  position:absolute;
  left:18px;right:18px;bottom:14px;
  z-index:2;
  font-size:13px;
  color:var(--text-2);
  line-height:1.6;
}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:12px;max-width:880px;}
.faq-item{
  background:var(--glass);
  border:1px solid var(--line-2);
  border-radius:var(--r-card);
  backdrop-filter:blur(10px) saturate(120%);
  -webkit-backdrop-filter:blur(10px) saturate(120%);
  overflow:hidden;
  transition:border-color .22s ease,background .22s ease;
}
.faq-item:hover{border-color:rgba(18,230,160,.35);}
.faq-item.open{border-color:rgba(18,230,160,.45);background:rgba(18,230,160,.06);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:19px 22px;
  text-align:left;
  font-size:15.5px;
  font-weight:600;
  color:var(--text-1);
  line-height:1.6;
}
.faq-q .sign{
  flex:none;
  position:relative;
  width:22px;height:22px;
  border-radius:50%;
  border:1px solid var(--line-2);
  transition:transform .28s ease,border-color .28s ease,background .28s ease;
}
.faq-q .sign::before,.faq-q .sign::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--text-2);
  border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform .28s ease,background .28s ease;
}
.faq-q .sign::before{width:10px;height:1.8px;}
.faq-q .sign::after{width:1.8px;height:10px;}
.faq-item.open .faq-q .sign{transform:rotate(180deg);border-color:var(--primary);background:rgba(18,230,160,.14);}
.faq-item.open .faq-q .sign::before{background:var(--primary);}
.faq-item.open .faq-q .sign::after{transform:translate(-50%,-50%) scaleY(0);background:var(--primary);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .34s cubic-bezier(.2,.7,.2,1);
}
.faq-a-inner{
  padding:0 22px 20px 22px;
  border-left:3px solid var(--primary);
  margin:0 0 0 22px;
  padding-left:18px;
}
.faq-a-inner p{font-size:14.5px;line-height:1.9;}

/* ---------- CTA ---------- */
.cta{
  position:relative;
  overflow:hidden;
  padding:72px 0;
  text-align:center;
  border-top:1px solid var(--line);
  background:
    radial-gradient(48% 120% at 50% 115%,rgba(18,230,160,.2),transparent 70%),
    linear-gradient(180deg,var(--bg-1),var(--bg-0));
}
.cta h2{margin-bottom:14px;}
.cta p{max-width:620px;margin:0 auto;font-size:15.5px;line-height:1.9;}
.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-top:30px;}

/* ---------- 页脚 ---------- */
.footer{
  background:#05090C;
  border-top:1px solid var(--line);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:44px;
}
.footer-logo{
  font-size:17px;
  font-weight:700;
  color:var(--text-1);
  margin-bottom:14px;
  letter-spacing:.01em;
}
.footer-brand p{font-size:13.5px;color:var(--text-3);line-height:1.9;max-width:360px;}
.footer-col h4{font-size:14px;color:var(--text-1);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul li{font-size:13.5px;color:var(--text-3);line-height:1.7;}
.footer-col ul li a{color:var(--text-3);}
.footer-col ul li a:hover{color:var(--primary);}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:20px 0 26px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:var(--text-3);
  font-family:var(--mono);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .55s ease,transform .55s cubic-bezier(.2,.7,.2,1);}
.reveal.in{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1439px){
  .container{padding:0 22px;}
}
@media (min-width:992px) and (max-width:1199px){
  :root{--sidebar-w:88px;}
  .sidebar{padding:22px 12px 18px;align-items:center;}
  .brand{padding:4px 0 18px;justify-content:center;width:100%;}
  .brand-text{display:none;}
  .side-label{display:none;}
  .side-nav{width:100%;}
  .side-nav a{justify-content:center;padding:13px 0;}
  .side-nav a .txt{display:none;}
  .side-search{width:100%;margin:18px 0 14px;}
  .side-search input{padding:11px 0;text-align:center;color:transparent;}
  .side-search input::placeholder{color:var(--text-3);font-size:12px;}
  .side-search svg{left:50%;transform:translate(-50%,-50%);}
  .side-cta{width:100%;padding:12px 4px;font-size:12px;}
  .side-foot{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:991px){
  .mobile-bar{display:flex;}
  .sidebar{
    transform:translateX(-100%);
    width:280px;
    box-shadow:0 0 60px rgba(0,0,0,.6);
  }
  body.nav-open .sidebar{transform:translateX(0);}
  body.nav-open{overflow:hidden;}
  .shell{margin-left:0;padding-top:60px;}
  .topbar{top:60px;}
  .anchorbar{top:108px;}
  :root{--sec:64px;}
  .hero{padding:52px 0 48px;}
  .compare-grid{grid-template-columns:1fr;}
  .stats{grid-template-columns:repeat(2,1fr);padding:30px 22px;}
  .notice-grid{grid-template-columns:1fr;gap:28px;}
  .benefit-item{grid-template-columns:48px minmax(0,1fr);gap:16px;}
  .benefit-side{grid-column:2;flex-direction:row;align-items:center;justify-content:flex-start;}
}
@media (max-width:767px){
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .tl-item{grid-template-columns:56px minmax(0,1fr);gap:14px;}
  .timeline::before{left:27px;}
  .tl-node{margin-left:9px;width:34px;height:34px;font-size:12px;}
  .tl-card{padding:18px;}
}
@media (max-width:575px){
  .container{padding:0 16px;}
  :root{--sec:48px;}
  .hero-actions .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .stats{grid-template-columns:1fr;gap:22px;}
  .compare-card{padding:20px;}
  .faq-q{padding:16px;font-size:14.5px;gap:12px;}
  .faq-a-inner{margin-left:16px;padding-left:14px;padding-right:16px;}
  .hero-panel{padding:18px;}
  .benefit-item{padding:18px;}
  .topbar-meta{display:none;}
}

/* roulang page: category4 */
:root{
  --bg-0:#070C0F;
  --bg-1:#0C141A;
  --bg-2:#101B22;
  --primary:#12E6A0;
  --primary-deep:#06A176;
  --accent:#FF7A2F;
  --text-1:#F2F6F7;
  --text-2:#A9B8BE;
  --text-3:#6D8087;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --glass:rgba(255,255,255,.045);
  --radius-card:14px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-1:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-2:0 22px 48px -20px rgba(0,0,0,.85),0 0 0 1px rgba(18,230,160,.22),0 0 34px -10px rgba(18,230,160,.35);
  --space-section:96px;
  --sidebar-w:260px;
  --font-mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,"Courier New",monospace;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body.drawer-open{overflow:hidden;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:700;line-height:1.25;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;}
::selection{background:rgba(18,230,160,.28);color:#fff;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

/* ============ 背景装饰 ============ */
.bg-layer{
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:96px 96px;
  opacity:.35;
  mask-image:radial-gradient(circle at 70% 12%,#000 0%,transparent 68%);
  -webkit-mask-image:radial-gradient(circle at 70% 12%,#000 0%,transparent 68%);
}
.glow{
  position:fixed;
  width:620px;height:620px;
  border-radius:50%;
  filter:blur(90px);
  opacity:.11;
  z-index:0;
  pointer-events:none;
  background:radial-gradient(circle,var(--primary) 0%,transparent 65%);
}
.glow-a{top:-240px;left:44%;}
.glow-b{bottom:-320px;left:6%;opacity:.07;}

/* ============ 侧栏 ============ */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  z-index:60;
  display:flex;
  flex-direction:column;
  gap:22px;
  padding:24px 18px 20px;
  background:rgba(9,15,19,.92);
  border-right:1px solid var(--line);
  backdrop-filter:blur(10px) saturate(120%);
  -webkit-backdrop-filter:blur(10px) saturate(120%);
  overflow-y:auto;
  transition:transform .3s var(--ease);
}
.sidebar::-webkit-scrollbar{width:6px;}
.sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:99px;}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  padding:6px 8px;
}
.brand-mark{
  width:34px;height:34px;
  flex:0 0 34px;
  display:grid;place-items:center;
  border-radius:9px;
  background:linear-gradient(150deg,var(--primary) 0%,var(--primary-deep) 100%);
  color:#04120D;
  font-weight:800;
  font-size:15px;
  letter-spacing:-.5px;
  box-shadow:0 0 22px -6px rgba(18,230,160,.65);
  clip-path:polygon(0 0,100% 0,100% 74%,72% 100%,0 100%);
}
.brand-text{
  font-size:15.5px;
  font-weight:700;
  color:var(--text-1);
  line-height:1.3;
}
.brand-sub{
  display:block;
  font-size:11px;
  font-weight:400;
  color:var(--text-3);
  letter-spacing:.08em;
}
.side-label{
  font-size:11px;
  letter-spacing:.16em;
  color:var(--text-3);
  padding:0 10px;
  text-transform:uppercase;
}
.side-nav ul{display:flex;flex-direction:column;gap:4px;}
.nav-link{
  position:relative;
  display:flex;
  align-items:center;
  gap:11px;
  padding:11px 12px;
  border-radius:10px;
  color:var(--text-2);
  font-size:14.5px;
  line-height:1.4;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.nav-link .nav-ico{
  width:20px;height:20px;
  flex:0 0 20px;
  color:var(--text-3);
  transition:color .22s var(--ease),filter .22s var(--ease);
}
.nav-link .nav-ico svg{width:20px;height:20px;display:block;}
.nav-link:hover{background:rgba(255,255,255,.05);color:var(--text-1);}
.nav-link:hover .nav-ico{color:var(--primary);}
.nav-link.active{
  color:var(--text-1);
  background:linear-gradient(90deg,rgba(18,230,160,.16),rgba(18,230,160,.02));
  font-weight:600;
}
.nav-link.active::before{
  content:"";
  position:absolute;
  left:0;top:9px;bottom:9px;
  width:3px;
  border-radius:3px;
  background:var(--primary);
}
.nav-link.active .nav-ico{color:var(--primary);filter:drop-shadow(0 0 8px rgba(18,230,160,.75));}
.side-search{position:relative;}
.side-search input{
  width:100%;
  padding:11px 13px 11px 38px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:10px;
  color:var(--text-1);
  font-size:14px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.side-search input::placeholder{color:var(--text-3);}
.side-search input:focus{
  outline:none;
  border-color:var(--primary);
  background:rgba(18,230,160,.06);
  box-shadow:0 0 0 3px rgba(18,230,160,.16),0 0 26px -8px rgba(18,230,160,.5);
}
.side-search .search-ico{
  position:absolute;
  left:12px;top:50%;
  transform:translateY(-50%);
  width:16px;height:16px;
  color:var(--text-3);
  pointer-events:none;
}
.side-cta{margin-top:2px;}
.side-foot{
  margin-top:auto;
  padding:14px 10px 0;
  border-top:1px solid var(--line);
  font-size:11.5px;
  line-height:1.7;
  color:var(--text-3);
  font-family:var(--font-mono);
}
.overlay{
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.6);
  opacity:0;
  visibility:hidden;
  z-index:55;
  transition:opacity .28s var(--ease),visibility .28s var(--ease);
}
body.drawer-open .overlay{opacity:1;visibility:visible;}

/* ============ 移动顶栏 ============ */
.mobile-bar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:58px;
  z-index:70;
  align-items:center;
  gap:12px;
  padding:0 16px;
  background:rgba(8,13,17,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.burger{
  width:38px;height:38px;
  display:grid;
  place-items:center;
  gap:4px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:9px;
}
.burger span{
  display:block;
  width:16px;height:1.6px;
  background:var(--text-1);
  border-radius:2px;
  transition:transform .25s var(--ease),opacity .25s var(--ease);
}
body.drawer-open .burger span:nth-child(1){transform:translateY(5.6px) rotate(45deg);}
body.drawer-open .burger span:nth-child(2){opacity:0;}
body.drawer-open .burger span:nth-child(3){transform:translateY(-5.6px) rotate(-45deg);}
.mobile-brand{
  font-size:15px;
  font-weight:700;
  color:var(--text-1);
}

/* ============ 布局 ============ */
.page{
  position:relative;
  z-index:1;
  margin-left:var(--sidebar-w);
  min-height:100vh;
}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 28px;
}
.topbar{
  position:sticky;
  top:0;
  z-index:40;
  height:48px;
  display:flex;
  align-items:center;
  background:rgba(7,12,15,.72);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  transition:background .25s var(--ease);
}
.topbar.solid{background:rgba(7,12,15,.96);}
.topbar .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:12.5px;
  color:var(--text-3);
}
.crumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.crumb a{color:var(--text-2);transition:color .2s var(--ease);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:var(--text-3);}
.crumb .now{color:var(--primary);}
.topbar .date{font-family:var(--font-mono);letter-spacing:.02em;white-space:nowrap;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--radius-btn);
  font-size:14.5px;
  font-weight:600;
  border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn svg{width:16px;height:16px;}
.btn-primary{
  background:linear-gradient(150deg,var(--primary) 0%,var(--primary-deep) 100%);
  color:#04120D;
  box-shadow:0 10px 26px -14px rgba(18,230,160,.85);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
}
.btn-ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--text-1);
}
.btn-ghost:hover{
  border-color:var(--primary);
  color:var(--primary);
  transform:translateY(-2px);
}
.btn:active{transform:translateY(1px);box-shadow:none;}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--primary);
  font-size:14px;
  font-weight:600;
  transition:gap .2s var(--ease);
}
.link-arrow:hover{gap:10px;}
.link-arrow:hover span{text-decoration:underline;text-underline-offset:3px;}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 11px;
  border-radius:var(--radius-pill);
  font-size:12px;
  letter-spacing:.04em;
  line-height:1.6;
  white-space:nowrap;
}
.badge-green{background:rgba(18,230,160,.13);color:var(--primary);border:1px solid rgba(18,230,160,.28);}
.badge-orange{background:rgba(255,122,47,.14);color:var(--accent);border:1px solid rgba(255,122,47,.3);}
.badge-grey{background:rgba(255,255,255,.05);color:var(--text-3);border:1px solid var(--line);}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:78px 0 64px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(180deg,rgba(7,12,15,.88) 0%,rgba(7,12,15,.93) 62%,var(--bg-0) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  opacity:.9;
}
.hero::after{
  content:"";
  position:absolute;
  width:560px;height:560px;
  right:-140px;top:-180px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(18,230,160,.16),transparent 66%);
  filter:blur(30px);
  pointer-events:none;
}
.hero .container{position:relative;z-index:2;}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.25fr) minmax(0,.85fr);
  gap:44px;
  align-items:center;
}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--radius-pill);
  background:var(--glass);
  border:1px solid var(--line-strong);
  backdrop-filter:blur(10px) saturate(120%);
  -webkit-backdrop-filter:blur(10px) saturate(120%);
  font-size:12.5px;
  color:var(--text-2);
  letter-spacing:.04em;
  margin-bottom:20px;
}
.hero-eyebrow i{
  width:7px;height:7px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 10px rgba(18,230,160,.9);
  font-style:normal;
}
.hero h1{
  font-size:clamp(30px,4.2vw,52px);
  line-height:1.15;
  letter-spacing:-.015em;
  margin-bottom:18px;
}
.hero h1 em{
  font-style:normal;
  color:var(--primary);
}
.hero-lead{
  max-width:600px;
  font-size:16.5px;
  color:var(--text-2);
  line-height:1.9;
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-stats{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:18px;
  max-width:560px;
}
.hero-stat{
  padding:14px 16px;
  border-radius:12px;
  background:rgba(255,255,255,.035);
  border:1px solid var(--line);
}
.hero-stat b{
  display:block;
  font-family:var(--font-mono);
  font-size:22px;
  font-weight:700;
  color:var(--primary);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
  text-shadow:0 0 18px rgba(18,230,160,.4);
}
.hero-stat span{font-size:12.5px;color:var(--text-3);}
.hero-visual{
  position:relative;
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-1);
  clip-path:polygon(0 0,100% 0,100% 100%,0 100%,0 0);
}
.hero-visual img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
}
.hero-visual::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(200deg,rgba(7,12,15,0) 40%,rgba(7,12,15,.85) 100%);
}
.hero-float{
  position:absolute;
  left:16px;right:16px;bottom:16px;
  z-index:2;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:13px 15px;
  border-radius:12px;
  background:rgba(10,17,22,.78);
  border:1px solid var(--line-strong);
  backdrop-filter:blur(10px) saturate(120%);
  -webkit-backdrop-filter:blur(10px) saturate(120%);
}
.hero-float strong{display:block;font-size:14px;color:var(--text-1);}
.hero-float small{font-size:11.5px;color:var(--text-3);font-family:var(--font-mono);}

/* ============ 锚点导航 ============ */
.anchor-nav{
  position:sticky;
  top:48px;
  z-index:35;
  background:rgba(10,16,21,.9);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.anchor-nav .container{
  display:flex;
  gap:6px;
  overflow-x:auto;
  scrollbar-width:none;
}
.anchor-nav .container::-webkit-scrollbar{display:none;}
.anchor-nav a{
  flex:0 0 auto;
  padding:14px 14px;
  font-size:13.5px;
  color:var(--text-3);
  border-bottom:2px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.anchor-nav a:hover{color:var(--primary);}
.anchor-nav a.on{color:var(--text-1);border-bottom-color:var(--primary);}

/* ============ 板块 ============ */
.section{padding:var(--space-section) 0;}
.section.alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .badge{margin-bottom:16px;}
.section-head h2{
  font-size:clamp(24px,3vw,34px);
  margin-bottom:14px;
}
.section-head p{font-size:15.5px;color:var(--text-2);}
.head-row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
  flex-wrap:wrap;
}

/* ============ 双列信息卡 ============ */
.info-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:22px;
}
.info-card{
  position:relative;
  padding:26px 24px;
  border-radius:var(--radius-card);
  background:var(--bg-2);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.info-card:hover{
  transform:translateY(-4px);
  border-color:rgba(18,230,160,.32);
  box-shadow:var(--shadow-2);
}
.info-card .ico{
  width:42px;height:42px;
  display:grid;place-items:center;
  border-radius:11px;
  margin-bottom:16px;
  background:rgba(18,230,160,.1);
  border:1px solid rgba(18,230,160,.24);
  color:var(--primary);
}
.info-card .ico svg{width:22px;height:22px;}
.info-card h3{font-size:18px;margin-bottom:10px;}
.info-card p{font-size:14.5px;color:var(--text-2);line-height:1.8;}
.info-card ul{margin-top:14px;display:flex;flex-direction:column;gap:9px;}
.info-card li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  color:var(--text-2);
}
.info-card li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:6px;height:6px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 8px rgba(18,230,160,.7);
}
.info-card .card-index{
  position:absolute;
  top:20px;right:22px;
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--text-3);
  letter-spacing:.06em;
}

/* ============ 对比信息卡 ============ */
.compare{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:22px;
}
.compare-col{
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--bg-2);
  overflow:hidden;
}
.compare-col header{
  padding:20px 24px 18px;
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.03),transparent);
}
.compare-col header h3{font-size:17px;}
.compare-col header p{font-size:13px;color:var(--text-3);margin-top:5px;}
.compare-col ul{padding:8px 0;}
.compare-col li{
  display:flex;
  gap:12px;
  padding:15px 24px;
  font-size:14.2px;
  color:var(--text-2);
  line-height:1.75;
  border-bottom:1px solid rgba(255,255,255,.045);
}
.compare-col li:last-child{border-bottom:0;}
.compare-col li .dot{
  flex:0 0 7px;
  width:7px;height:7px;
  margin-top:11px;
  border-radius:50%;
  background:var(--accent);
}
.compare-col.ok li .dot{background:var(--primary);box-shadow:0 0 9px rgba(18,230,160,.8);}
.compare-col li b{color:var(--text-1);font-weight:600;}

/* ============ 图文双列 ============ */
.split{
  display:grid;
  grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);
  gap:40px;
  align-items:center;
}
.split-media{
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-1);
}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.split h3{font-size:22px;margin-bottom:14px;}
.split p{font-size:15px;margin-bottom:16px;}
.check-list{display:flex;flex-direction:column;gap:12px;}
.check-list li{
  display:flex;
  gap:11px;
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.75;
}
.check-list .tick{
  flex:0 0 20px;
  width:20px;height:20px;
  margin-top:5px;
  border-radius:50%;
  display:grid;place-items:center;
  background:rgba(18,230,160,.13);
  border:1px solid rgba(18,230,160,.3);
  color:var(--primary);
}
.check-list .tick svg{width:11px;height:11px;}

/* ============ 步骤条 ============ */
.steps{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
  counter-reset:step;
}
.step{
  position:relative;
  padding:24px 20px;
  border-radius:var(--radius-card);
  background:var(--bg-2);
  border:1px solid var(--line);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:rgba(18,230,160,.3);}
.step .num{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--accent);
  letter-spacing:.08em;
  display:block;
  margin-bottom:12px;
}
.step h3{font-size:16.5px;margin-bottom:9px;}
.step p{font-size:13.8px;color:var(--text-2);line-height:1.75;}
.step::after{
  content:"";
  position:absolute;
  left:20px;right:20px;bottom:0;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--primary),transparent);
  opacity:.5;
}

/* ============ 提示条 ============ */
.notice{
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:20px 22px;
  margin-top:34px;
  border-radius:var(--radius-card);
  background:rgba(255,122,47,.07);
  border:1px solid rgba(255,122,47,.26);
}
.notice svg{width:22px;height:22px;flex:0 0 22px;color:var(--accent);margin-top:3px;}
.notice p{font-size:14.2px;color:var(--text-2);}
.notice strong{color:var(--text-1);}

/* ============ FAQ ============ */
.faq{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(10px) saturate(120%);
  -webkit-backdrop-filter:blur(10px) saturate(120%);
  overflow:hidden;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.faq-item:hover{border-color:rgba(18,230,160,.28);}
.faq-item.open{border-color:rgba(18,230,160,.4);background:rgba(18,230,160,.05);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 22px;
  background:none;
  border:0;
  text-align:left;
  font-size:15.8px;
  font-weight:600;
  color:var(--text-1);
  line-height:1.65;
  position:relative;
}
.faq-q::before{
  content:"";
  position:absolute;
  left:0;top:16px;bottom:16px;
  width:3px;
  border-radius:3px;
  background:var(--primary);
  opacity:0;
  transition:opacity .22s var(--ease);
}
.faq-item.open .faq-q::before{opacity:1;}
.faq-sign{
  flex:0 0 26px;
  width:26px;height:26px;
  position:relative;
  border-radius:7px;
  border:1px solid var(--line-strong);
  transition:transform .28s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.faq-sign::before,.faq-sign::after{
  content:"";
  position:absolute;
  background:var(--primary);
  border-radius:2px;
  left:50%;top:50%;
  transition:transform .28s var(--ease),opacity .28s var(--ease);
}
.faq-sign::before{width:12px;height:1.8px;transform:translate(-50%,-50%);}
.faq-sign::after{width:1.8px;height:12px;transform:translate(-50%,-50%);}
.faq-item.open .faq-sign{background:rgba(18,230,160,.14);border-color:rgba(18,230,160,.45);}
.faq-item.open .faq-sign::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .34s var(--ease);
}
.faq-a-inner{
  padding:0 22px 22px 24px;
  font-size:14.6px;
  color:var(--text-2);
  line-height:1.85;
}

/* ============ CTA ============ */
.cta{
  position:relative;
  overflow:hidden;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:82px 0;
  text-align:center;
}
.cta::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(180deg,rgba(7,12,15,.9),rgba(7,12,15,.94)),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
}
.cta::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  width:760px;height:420px;
  transform:translate(-50%,-50%);
  background:radial-gradient(ellipse,rgba(18,230,160,.16),transparent 66%);
  filter:blur(20px);
  pointer-events:none;
}
.cta .container{position:relative;z-index:2;max-width:760px;}
.cta h2{font-size:clamp(24px,3vw,34px);margin-bottom:16px;}
.cta p{font-size:15.6px;margin-bottom:30px;}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;}

/* ============ 页脚 ============ */
.footer{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:48px;
}
.footer-logo{
  font-size:16.5px;
  font-weight:700;
  color:var(--text-1);
  margin-bottom:14px;
}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.85;max-width:340px;}
.footer-col h4{
  font-size:14px;
  color:var(--text-1);
  margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col li{font-size:14px;color:var(--text-3);line-height:1.7;}
.footer-col a{
  color:var(--text-2);
  font-size:14px;
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.footer-col a:hover{color:var(--primary);padding-left:3px;}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:20px 0 26px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:var(--text-3);
  font-family:var(--font-mono);
}

/* ============ 入场动画 ============ */
.reveal{opacity:0;transform:translateY(12px);}
.reveal.in{opacity:1;transform:none;transition:opacity .5s var(--ease),transform .5s var(--ease);}

/* ============ 响应式 ============ */
@media (max-width:1439px){
  :root{--space-section:88px;}
}
@media (max-width:1199px){
  :root{--sidebar-w:240px;}
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .hero-visual{max-width:620px;}
  .split{grid-template-columns:1fr;gap:28px;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:991px){
  :root{--space-section:64px;--sidebar-w:280px;}
  .sidebar{transform:translateX(-100%);box-shadow:24px 0 60px -30px rgba(0,0,0,.9);}
  body.drawer-open .sidebar{transform:translateX(0);}
  .mobile-bar{display:flex;}
  .page{margin-left:0;padding-top:58px;}
  .topbar{top:58px;}
  .anchor-nav{top:106px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .hero{padding:54px 0 48px;}
  .hero-stats{grid-template-columns:1fr 1fr;gap:12px;}
  .info-grid{grid-template-columns:1fr;}
  .compare{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .section-head{margin-bottom:32px;}
  .info-card{padding:22px 18px;}
  .compare-col li{padding:14px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
}
@media (max-width:520px){
  .hero h1{font-size:27px;}
  .hero-stats{grid-template-columns:1fr;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .faq-q{padding:17px 16px;font-size:15px;}
  .faq-a-inner{padding:0 16px 18px 18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}