/* roulang page: index */
:root{
  --c-bg:#0A0D0C;
  --c-bg-deep:#060908;
  --c-surface:#141B19;
  --c-surface-2:#1B2422;
  --c-line:rgba(255,255,255,.08);
  --c-line-strong:rgba(0,224,138,.35);
  --c-primary:#00E08A;
  --c-primary-ink:#04140D;
  --c-accent:#C8FF4D;
  --c-warn:#FF6A3D;
  --c-text:#ECF3EF;
  --c-text-2:#A7B4AE;
  --c-text-3:#6F7C77;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(0,0,0,.45);
  --sh-2:0 16px 48px rgba(0,0,0,.55);
  --glow:0 0 0 1px rgba(0,224,138,.35),0 0 24px rgba(0,224,138,.18);
  --t:160ms ease;
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,dl,dd,dt,figure{margin:0}
h1,h2,h3,h4{line-height:1.25;letter-spacing:-.01em}
::selection{background:rgba(0,224,138,.25);color:#fff}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.container{
  width:100%;
  max-width:1200px;
  margin-inline:auto;
  padding-inline:clamp(16px,4vw,40px);
}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums}
section{position:relative}
.section{padding-block:96px}
.section--tight{padding-block:72px}
.section--line{border-top:1px solid var(--c-line)}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
  flex-wrap:wrap;
}
.section-title{
  position:relative;
  padding-left:16px;
  font-size:clamp(24px,3.2vw,34px);
  font-weight:700;
}
.section-title::before{
  content:"";
  position:absolute;
  left:0;
  top:.16em;
  width:4px;
  height:.92em;
  border-radius:2px;
  background:var(--c-primary);
}
.section-desc{
  margin-top:10px;
  font-size:14px;
  color:var(--c-text-3);
  max-width:60ch;
}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--c-primary);
  transition:color var(--t);
}
.link-more .arrow{transition:transform var(--t)}
.link-more:hover .arrow{transform:translateX(3px)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 24px;
  border:1px solid transparent;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  transition:background var(--t),color var(--t),border-color var(--t),box-shadow var(--t),transform var(--t),filter var(--t);
}
.btn-primary{background:var(--c-primary);color:var(--c-primary-ink)}
.btn-primary:hover{filter:brightness(1.06);box-shadow:var(--glow);transform:translateY(-1px)}
.btn-primary:active{transform:scale(.98)}
.btn-outline{border-color:var(--c-line-strong);color:var(--c-text)}
.btn-outline:hover{border-color:var(--c-primary);color:var(--c-primary);background:rgba(0,224,138,.06)}
.btn-outline:active{transform:scale(.98)}
.btn-ghost{color:var(--c-text-2);padding:0 12px}
.btn-ghost:hover{color:var(--c-text)}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:2px 10px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:600;
  line-height:1.9;
  background:var(--c-surface-2);
  color:var(--c-text-2);
  border:1px solid var(--c-line);
  white-space:nowrap;
}
.badge-primary{color:var(--c-primary);border-color:var(--c-line-strong);background:rgba(0,224,138,.08)}
.badge-accent{color:var(--c-accent);border-color:rgba(200,255,77,.32);background:rgba(200,255,77,.08)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag-row li{
  padding:2px 12px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  background:rgba(255,255,255,.02);
  font-size:12px;
  color:var(--c-text-2);
  line-height:1.9;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(10,13,12,.82);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  transition:box-shadow var(--t);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:1px;
  background:linear-gradient(90deg,#00E08A 0%,rgba(0,224,138,.15) 38%,transparent 70%);
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;gap:28px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:26px;height:26px;flex:none;
  border-radius:6px;
  background:var(--c-primary);
  transform:skewX(-12deg);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:2px;
  box-shadow:0 0 16px rgba(0,224,138,.35);
}
.logo-mark i{display:block;width:3px;height:3px;border-radius:50%;background:var(--c-primary-ink)}
.logo-text{font-size:18px;font-weight:800;letter-spacing:-.01em;color:var(--c-text)}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:6px}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  color:var(--c-text-2);
  transition:color var(--t);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;right:100%;bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--c-primary);
  box-shadow:0 0 10px rgba(0,224,138,.7);
  transition:right var(--t);
}
.nav-links a:hover{color:var(--c-text)}
.nav-links a:hover::after{right:0}
.nav-links a.is-active{color:var(--c-primary)}
.nav-links a.is-active::after{right:0}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.nav-toggle{
  display:none;
  margin-left:auto;
  width:44px;height:44px;
  border:1px solid var(--c-line);
  border-radius:var(--r-sm);
  align-items:center;
  justify-content:center;
  transition:border-color var(--t),background var(--t);
}
.nav-toggle:hover{border-color:var(--c-line-strong);background:rgba(0,224,138,.06)}
.nav-toggle span{display:block;position:relative;width:18px;height:2px;background:var(--c-text);border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-text);border-radius:2px;transition:transform var(--t);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.drawer-mask{
  position:fixed;
  inset:0;
  z-index:90;
  background:rgba(0,0,0,.6);
  opacity:0;
  visibility:hidden;
  transition:opacity var(--t),visibility var(--t);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;
  top:0;right:0;
  z-index:95;
  width:84vw;
  max-width:340px;
  height:100%;
  display:flex;
  flex-direction:column;
  background:var(--c-surface);
  border-left:1px solid var(--c-line);
  box-shadow:var(--sh-2);
  transform:translateX(102%);
  transition:transform 220ms ease;
  padding:20px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--c-line)}
.drawer-close{
  width:32px;height:32px;border-radius:var(--r-sm);
  border:1px solid var(--c-line);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:18px;color:var(--c-text-2);
  transition:color var(--t),border-color var(--t);
}
.drawer-close:hover{color:var(--c-primary);border-color:var(--c-line-strong)}
.drawer-nav{display:flex;flex-direction:column;margin-top:12px}
.drawer-nav a{
  display:flex;align-items:center;
  min-height:52px;
  padding:0 4px;
  font-size:16px;
  color:var(--c-text-2);
  border-bottom:1px solid var(--c-line);
  transition:color var(--t);
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--c-primary)}
.drawer-foot{margin-top:auto;padding-top:20px}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  padding-top:72px;
  background-color:var(--c-bg);
  background-image:
    radial-gradient(1200px 480px at 78% -10%,rgba(0,224,138,.14),transparent 60%),
    repeating-linear-gradient(0deg,rgba(255,255,255,.04) 0 1px,transparent 1px 64px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.04) 0 1px,transparent 1px 64px);
}
.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:start;
  padding-bottom:56px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:4px 12px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line-strong);
  background:rgba(0,224,138,.07);
  color:var(--c-primary);
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
}
.hero h1{
  margin-top:20px;
  font-size:clamp(30px,5vw,52px);
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.01em;
  max-width:20ch;
}
.hero-sub{
  margin-top:18px;
  font-size:16px;
  color:var(--c-text-2);
  max-width:36ch;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-panel{
  position:relative;
  isolation:isolate;
  overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--c-line);
  padding:26px;
  box-shadow:var(--sh-2);
  background:var(--c-surface);
}
.hero-panel::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:-2;
  background:url(/assets/images/backpic/back-1.png) center/cover no-repeat;
  opacity:.55;
}
.hero-panel::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  background:linear-gradient(180deg,rgba(10,13,12,.72),rgba(10,13,12,.9));
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--c-line)}
.panel-title{font-size:17px;font-weight:700}
.panel-list{margin-top:6px}
.panel-list > div{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:14px 0;
  border-bottom:1px solid var(--c-line);
}
.panel-list dt{font-size:13px;color:var(--c-text-3)}
.panel-list dd{font-family:var(--mono);font-size:15px;font-weight:700;color:var(--c-text);font-variant-numeric:tabular-nums}
.panel-list > div:last-child dd{color:var(--c-accent)}
.panel-note{margin-top:16px;font-size:13px;line-height:1.7;color:var(--c-text-3)}
.stat-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--c-line);
  padding-block:26px 40px;
}
.stat-strip li{padding-inline:24px}
.stat-strip li:first-child{padding-left:0}
.stat-strip li + li{border-left:1px solid var(--c-line)}
.stat-strip strong{
  display:block;
  font-family:var(--mono);
  font-size:clamp(26px,3.4vw,34px);
  font-weight:800;
  line-height:1.1;
  font-variant-numeric:tabular-nums;
  color:var(--c-text);
}
.stat-strip strong em{font-style:normal;font-size:15px;color:var(--c-primary);margin-left:2px}
.stat-strip span{display:block;margin-top:6px;font-size:13px;color:var(--c-text-2)}

/* ---------- 痛点条目流 ---------- */
.issue-list{border-top:1px solid var(--c-line)}
.issue-item{
  display:grid;
  grid-template-columns:56px 1fr;
  gap:20px;
  padding:26px 16px;
  border-bottom:1px solid var(--c-line);
  transition:background var(--t);
}
.issue-item:hover{background:rgba(255,255,255,.02)}
.issue-num{
  font-family:var(--mono);
  font-size:15px;
  font-weight:800;
  color:var(--c-text-3);
  padding-top:2px;
  font-variant-numeric:tabular-nums;
  transition:color var(--t);
}
.issue-item:hover .issue-num{color:var(--c-accent)}
.issue-item h3{font-size:17px;font-weight:600;margin-bottom:6px}
.issue-item p{font-size:15px;line-height:1.75;color:var(--c-text-2);max-width:70ch}

/* ---------- 方案错落卡片 ---------- */
.solution-row{display:grid;gap:24px}
.solution-row.row-a{grid-template-columns:1.15fr .85fr}
.solution-row.row-b{grid-template-columns:.85fr 1.15fr;margin-top:24px}
.solution-card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:14px;
  padding:28px;
  border-radius:var(--r-md);
  border:1px solid var(--c-line);
  background:var(--c-surface);
  transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.solution-card:hover{border-color:var(--c-line-strong);box-shadow:var(--sh-2);transform:translateY(-2px)}
.solution-num{
  font-family:var(--mono);
  font-size:34px;
  font-weight:800;
  line-height:1;
  color:var(--c-accent);
  opacity:.92;
  font-variant-numeric:tabular-nums;
}
.solution-card h3{font-size:20px;font-weight:600}
.solution-card p{font-size:15px;color:var(--c-text-2);line-height:1.7}
.solution-card .link-more{margin-top:auto}

/* ---------- 数据区 ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.metric-grid > div{padding:32px 24px}
.metric-grid > div:first-child{padding-left:0}
.metric-grid > div + div{border-left:1px solid var(--c-line)}
.metric-grid strong{
  display:block;
  font-family:var(--mono);
  font-size:clamp(32px,4vw,46px);
  font-weight:800;
  line-height:1.05;
  color:var(--c-text);
  font-variant-numeric:tabular-nums;
}
.metric-grid strong em{font-style:normal;font-size:16px;color:var(--c-primary);margin-left:3px}
.metric-grid span{display:block;margin-top:10px;font-size:13px;color:var(--c-text-2)}

/* ---------- 分类路径卡 ---------- */
.path-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.path-card{
  position:relative;
  display:flex;
  flex-direction:column;
  overflow:hidden;
  border-radius:var(--r-md);
  border:1px solid var(--c-line);
  background:var(--c-surface);
  transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.path-card:hover{border-color:var(--c-line-strong);box-shadow:var(--sh-2);transform:translateY(-2px)}
.path-thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.path-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease}
.path-card:hover .path-thumb img{transform:scale(1.04)}
.path-thumb::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,13,12,.1),rgba(10,13,12,.85));
}
.path-body{padding:24px;display:flex;flex-direction:column;gap:12px}
.path-body h3{font-size:20px;font-weight:600}
.path-body p{font-size:15px;color:var(--c-text-2);line-height:1.7}
.path-body .link-more{margin-top:6px}

/* ---------- 最新信息 CMS ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  display:flex;
  flex-direction:column;
  overflow:hidden;
  border-radius:var(--r-md);
  border:1px solid var(--c-line);
  background:var(--c-surface);
  transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.post-card:hover{border-color:var(--c-line-strong);box-shadow:var(--sh-2);transform:translateY(-2px)}
.post-thumb{width:100%;aspect-ratio:16/10;object-fit:cover}
.post-body{display:flex;flex-direction:column;gap:12px;padding:20px;flex:1}
.post-title{
  font-size:18px;
  font-weight:600;
  line-height:1.5;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  transition:color var(--t);
}
.post-card:hover .post-title{color:var(--c-primary)}
.post-excerpt{
  font-size:14px;
  line-height:1.7;
  color:var(--c-text-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--c-line);
  font-size:13px;
  color:var(--c-text-3);
}
.post-empty{
  grid-column:1 / -1;
  border:1px dashed var(--c-line-strong);
  border-radius:var(--r-md);
  padding:56px 24px;
  text-align:center;
  color:var(--c-text-2);
  background:rgba(0,224,138,.03);
}
.post-empty strong{display:block;font-size:17px;color:var(--c-text);margin-bottom:8px}
.post-empty .link-more{margin-top:12px}

/* ---------- 表单区 ---------- */
.lead-grid{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:start}
.lead-copy h2{font-size:clamp(24px,3.2vw,32px);font-weight:700}
.lead-copy p{margin-top:16px;font-size:15px;color:var(--c-text-2);line-height:1.8;max-width:44ch}
.lead-points{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.lead-points li{display:flex;gap:10px;font-size:15px;color:var(--c-text-2)}
.lead-points li::before{
  content:"";
  width:6px;height:6px;flex:none;
  margin-top:11px;
  border-radius:2px;
  background:var(--c-primary);
}
.form-card{
  padding:28px;
  border-radius:var(--r-md);
  border:1px solid var(--c-line);
  background:var(--c-surface);
  box-shadow:var(--sh-1);
}
.field{margin-bottom:18px}
.field label{display:block;margin-bottom:8px;font-size:14px;color:var(--c-text-2)}
.field input,.field select,.field textarea{
  width:100%;
  min-height:44px;
  padding:11px 14px;
  font:inherit;
  font-size:15px;
  color:var(--c-text);
  background:var(--c-surface-2);
  border:1px solid var(--c-line);
  border-radius:var(--r-sm);
  transition:border-color var(--t),box-shadow var(--t);
}
.field textarea{min-height:112px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--c-text-3)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:var(--glow)}
.field select{
  appearance:none;
  -webkit-appearance:none;
  padding-right:38px;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23A7B4AE' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right 14px center;
}
.field select option{background:var(--c-surface-2);color:var(--c-text)}
.form-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:20px}
.consent{
  display:flex;
  align-items:flex-start;
  gap:8px;
  font-size:12px;
  line-height:1.6;
  color:var(--c-text-3);
  max-width:44ch;
}
.consent input[type="checkbox"]{
  appearance:none;
  -webkit-appearance:none;
  width:16px;height:16px;
  flex:none;
  margin-top:2px;
  border:1px solid var(--c-line-strong);
  border-radius:4px;
  background:transparent;
  transition:background var(--t),border-color var(--t);
  cursor:pointer;
}
.consent input[type="checkbox"]:checked{
  background-color:var(--c-primary);
  border-color:var(--c-primary);
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='11' height='9'%3E%3Cpath d='M1 4.5l3 3 6-6' fill='none' stroke='%2304140D' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:center;
}
.consent input[type="checkbox"]:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.warn-note{display:flex;gap:6px;align-items:flex-start;margin-top:14px;font-size:12px;color:var(--c-text-3)}
.warn-note .ico{color:var(--c-warn);font-weight:700;line-height:1.4}
.form-tip{
  margin-top:14px;
  padding:10px 14px;
  border-radius:var(--r-sm);
  border:1px solid var(--c-line-strong);
  background:rgba(0,224,138,.08);
  color:var(--c-primary);
  font-size:14px;
}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line);transition:background var(--t)}
.faq-item.is-open{background:rgba(0,224,138,.05)}
.faq-q{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  width:100%;
  min-height:60px;
  padding:14px 12px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--c-text);
  transition:color var(--t);
}
.faq-q:hover{color:var(--c-primary)}
.faq-ico{
  position:relative;
  width:18px;height:18px;flex:none;
  color:var(--c-primary);
}
.faq-ico::before,.faq-ico::after{
  content:"";
  position:absolute;
  top:50%;left:50%;
  width:14px;height:2px;
  border-radius:2px;
  background:currentColor;
  transform:translate(-50%,-50%);
  transition:transform var(--t),opacity var(--t);
}
.faq-ico::after{transform:translate(-50%,-50%) rotate(90deg)}
.faq-item.is-open .faq-ico::after{transform:translate(-50%,-50%) rotate(0deg);opacity:0}
.faq-a{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows var(--t);
}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a > div{overflow:hidden}
.faq-a p{
  padding:0 12px 20px;
  font-size:15px;
  line-height:1.8;
  color:var(--c-text-2);
  border-top:1px solid var(--c-line);
  padding-top:14px;
  margin:0 12px 20px;
  padding-inline:0;
}

/* ---------- CTA 横幅 ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--c-line-strong);
  padding:clamp(32px,5vw,56px);
  background-color:var(--c-surface);
  background-image:
    radial-gradient(900px 320px at 82% -30%,rgba(0,224,138,.18),transparent 62%),
    repeating-linear-gradient(0deg,rgba(255,255,255,.04) 0 1px,transparent 1px 56px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.04) 0 1px,transparent 1px 56px);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,3vw,30px);font-weight:700;max-width:22ch}
.cta-band p{margin-top:12px;font-size:15px;color:var(--c-text-2);max-width:46ch}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:0;
  background:var(--c-bg-deep);
  padding:64px 0 32px;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,#00E08A 0%,rgba(0,224,138,.15) 38%,transparent 70%);
}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo-text{font-size:17px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:var(--c-text-2);max-width:34ch}
.footer-brand .foot-note{margin-top:14px;font-size:12px;line-height:1.7;color:var(--c-text-3)}
.footer-col h3{font-size:14px;font-weight:700;color:var(--c-text);margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a,.footer-col span{font-size:14px;color:var(--c-text-2);transition:color var(--t)}
.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  margin-top:44px;
  padding-top:24px;
  border-top:1px solid var(--c-line);
  font-size:13px;
  color:var(--c-text-3);
}
.footer-bottom .num{font-size:13px;color:var(--c-text-3)}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .section{padding-block:64px}
  .hero{padding-top:56px}
  .hero-grid{grid-template-columns:1fr;gap:32px;padding-bottom:40px}
  .hero h1{max-width:24ch}
  .stat-strip{grid-template-columns:repeat(2,1fr);gap:24px 0;padding-bottom:32px}
  .stat-strip li:nth-child(3){padding-left:0}
  .stat-strip li:nth-child(3){border-left:0}
  .solution-row.row-a,.solution-row.row-b{grid-template-columns:1fr}
  .solution-row.row-b{margin-top:24px}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .metric-grid > div:nth-child(3){padding-left:0;border-left:0}
  .metric-grid > div:nth-child(3),.metric-grid > div:nth-child(4){border-top:1px solid var(--c-line)}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .lead-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav-links,.nav-actions{display:none}
  .nav-toggle{display:inline-flex}
}
@media (max-width:768px){
  .section{padding-block:48px}
  .nav-inner{height:56px;gap:12px}
  .logo-text{font-size:16px}
  .hero h1{max-width:100%}
  .hero-cta{width:100%}
  .hero-cta .btn{flex:1 1 auto;justify-content:center}
  .path-grid{grid-template-columns:1fr}
  .post-grid{grid-template-columns:1fr}
  .metric-grid > div{padding:24px 16px}
  .issue-item{grid-template-columns:40px 1fr;gap:12px;padding:22px 8px}
  .cta-band{padding:28px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
}
@media (max-width:520px){
  .stat-strip li{padding-inline:12px}
  .stat-strip strong{font-size:24px}
  .form-foot{flex-direction:column;align-items:flex-start}
  .form-foot .btn{width:100%}
  .hero-panel{padding:20px}
  .solution-card{padding:22px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --c-bg:#0A0D0C;
  --c-bg-deep:#060908;
  --c-surface:#141B19;
  --c-surface-2:#1B2422;
  --c-line:rgba(255,255,255,.08);
  --c-line-strong:rgba(0,224,138,.35);
  --c-primary:#00E08A;
  --c-primary-ink:#04140D;
  --c-accent:#C8FF4D;
  --c-warn:#FF6A3D;
  --c-text:#ECF3EF;
  --c-text-2:#A7B4AE;
  --c-text-3:#6F7C77;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(0,0,0,.45);
  --sh-2:0 16px 48px rgba(0,0,0,.55);
  --glow:0 0 0 1px rgba(0,224,138,.35),0 0 24px rgba(0,224,138,.18);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,"JetBrains Mono",Consolas,Monaco,monospace;
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:96px;
  --header-h:68px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color 160ms ease,border-color 160ms ease,background-color 160ms ease,box-shadow 160ms ease,transform 160ms ease}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;font-weight:700;letter-spacing:.01em}
.container{width:100%;max-width:1200px;margin:0 auto;padding-inline:clamp(16px,4vw,40px)}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,13,12,.82);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  transition:box-shadow 160ms ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,#00E08A 0%,rgba(0,224,138,.15) 38%,transparent 70%);
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;gap:var(--sp-5);height:var(--header-h)}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{position:relative;width:28px;height:28px;display:inline-block;transform:skewX(-10deg)}
.logo-mark i{position:absolute;display:block;border-radius:3px;background:var(--c-primary)}
.logo-mark i:nth-child(1){width:16px;height:16px;left:0;top:0;opacity:.95}
.logo-mark i:nth-child(2){width:8px;height:8px;right:0;top:2px;opacity:.65}
.logo-mark i:nth-child(3){width:8px;height:8px;right:2px;bottom:0;background:var(--c-accent);opacity:.9}
.logo-text{font-size:18px;font-weight:800;letter-spacing:-.01em;color:var(--c-text);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:var(--sp-5);margin-left:var(--sp-4)}
.nav-links a{
  position:relative;font-size:15px;color:var(--c-text-2);padding:6px 2px;line-height:1.2;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;
  background:var(--c-primary);opacity:0;transform:scaleX(.4);transform-origin:left;
  transition:opacity 160ms ease,transform 160ms ease,box-shadow 160ms ease;
}
.nav-links a:hover{color:var(--c-text)}
.nav-links a:hover::after{opacity:.7;transform:scaleX(1)}
.nav-links a.is-active{color:var(--c-primary)}
.nav-links a.is-active::after{opacity:1;transform:scaleX(1);box-shadow:0 0 12px rgba(0,224,138,.55)}
.nav-actions{display:flex;align-items:center;gap:var(--sp-3);margin-left:auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--c-line);align-items:center;justify-content:center;
}
.nav-toggle span{display:block;position:relative;width:18px;height:2px;background:var(--c-text);border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-text);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:background-color 160ms ease,color 160ms ease,box-shadow 160ms ease,transform 160ms ease,border-color 160ms ease;
}
.btn-primary{background:var(--c-primary);color:var(--c-primary-ink);box-shadow:0 0 0 1px rgba(0,224,138,.2)}
.btn-primary:hover{filter:brightness(1.06);box-shadow:var(--glow)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:transparent;color:var(--c-text);border:1px solid var(--c-line)}
.btn-ghost:hover{border-color:var(--c-line-strong);color:var(--c-primary)}
.btn-ghost:active{transform:scale(.98)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}

/* ---------- Drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:70;
  opacity:0;visibility:hidden;transition:opacity 160ms ease,visibility 160ms ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;z-index:80;
  background:var(--c-surface);border-left:1px solid var(--c-line);
  transform:translateX(100%);transition:transform 160ms ease;
  display:flex;flex-direction:column;padding:var(--sp-4) var(--sp-5) var(--sp-5);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:48px;margin-bottom:var(--sp-3)}
.drawer-close{width:40px;height:40px;border-radius:var(--r-sm);border:1px solid var(--c-line);font-size:20px;line-height:1;display:flex;align-items:center;justify-content:center;color:var(--c-text-2)}
.drawer-close:hover{color:var(--c-primary);border-color:var(--c-line-strong)}
.drawer nav a{
  display:flex;align-items:center;min-height:52px;border-bottom:1px solid var(--c-line);
  font-size:16px;color:var(--c-text-2);
}
.drawer nav a:hover{color:var(--c-primary)}
.drawer nav a.is-active{color:var(--c-primary)}
.drawer .btn{margin-top:var(--sp-5)}

/* ---------- Breadcrumb ---------- */
.crumb{padding:var(--sp-5) 0 0}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3)}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li:not(:last-child)::after{content:"›";color:var(--c-text-3);opacity:.6}
.crumb a:hover{color:var(--c-primary)}
.crumb .current{color:var(--c-text-2);max-width:42ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- Article layout ---------- */
.article-shell{padding:var(--sp-6) 0 var(--sp-8)}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:var(--sp-7)}
.article-main{min-width:0}
.article-head{position:relative;padding-bottom:var(--sp-5);border-bottom:1px solid var(--c-line)}
.article-head::before{
  content:"";position:absolute;inset:-32px -24px auto -24px;height:220px;z-index:-1;
  background:radial-gradient(900px 320px at 82% -30%,rgba(0,224,138,.14),transparent 62%);
  pointer-events:none;
}
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:var(--sp-3)}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:2px 8px;border-radius:var(--r-pill);
  font-size:12px;line-height:20px;font-weight:600;letter-spacing:.02em;
  background:var(--c-surface-2);color:var(--c-primary);border:1px solid var(--c-line);
}
.badge-accent{background:rgba(200,255,77,.08);color:var(--c-accent);border-color:rgba(200,255,77,.25)}
.badge-muted{background:var(--c-surface-2);color:var(--c-text-2)}
.article-head h1{
  font-size:clamp(30px,5vw,46px);line-height:1.18;font-weight:800;letter-spacing:-.01em;
  max-width:22ch;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:var(--sp-4);margin-top:var(--sp-4);font-size:13px;color:var(--c-text-3)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--c-line-strong)}
.article-meta time{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--c-text-2)}

/* ---------- Prose ---------- */
.prose{max-width:760px;font-size:17px;line-height:1.9;color:var(--c-text-2);padding-top:var(--sp-6)}
.prose > *:first-child{margin-top:0}
.prose p{margin:0 0 20px;color:var(--c-text-2)}
.prose h2{
  position:relative;margin:48px 0 16px;padding-left:14px;
  font-size:clamp(22px,2.6vw,28px);line-height:1.35;font-weight:700;color:var(--c-text);
}
.prose h2::before{content:"";position:absolute;left:0;top:.16em;width:4px;height:.92em;border-radius:2px;background:var(--c-primary)}
.prose h3{margin:32px 0 12px;font-size:20px;line-height:1.45;font-weight:600;color:var(--c-text)}
.prose a{color:var(--c-primary);border-bottom:1px solid rgba(0,224,138,.35)}
.prose a:hover{border-bottom-color:var(--c-primary)}
.prose strong{color:var(--c-text);font-weight:700}
.prose blockquote{
  margin:24px 0;padding:18px 22px;border-left:3px solid var(--c-primary);
  background:var(--c-surface-2);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--c-text-2);
}
.prose ul,.prose ol{margin:0 0 20px;padding-left:0}
.prose ul li{position:relative;padding-left:22px;margin-bottom:10px}
.prose ul li::before{
  content:"";position:absolute;left:2px;top:.66em;width:8px;height:8px;border-radius:2px;
  background:var(--c-primary);opacity:.85;transform:rotate(0deg);
}
.prose ol{counter-reset:li}
.prose ol li{position:relative;padding-left:28px;margin-bottom:10px;counter-increment:li}
.prose ol li::before{
  content:counter(li,decimal-leading-zero);position:absolute;left:0;top:0;
  font-family:var(--mono);font-size:14px;font-weight:800;color:var(--c-accent);
}
.prose img{border-radius:var(--r-md);border:1px solid var(--c-line);margin:24px 0 12px;width:100%}
.prose figure{margin:24px 0}
.prose figcaption{font-size:13px;color:var(--c-text-3);text-align:center}
.prose table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.prose th,.prose td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--c-line)}
.prose th{color:var(--c-text);font-weight:600;background:var(--c-surface-2)}
.prose td{color:var(--c-text-2)}
.prose td.num{color:var(--c-text);font-family:var(--mono);font-variant-numeric:tabular-nums}
.prose hr{border:0;border-top:1px solid var(--c-line);margin:36px 0}
.prose code{background:var(--c-surface-2);border:1px solid var(--c-line);border-radius:6px;padding:1px 6px;font-family:var(--mono);font-size:.92em;color:var(--c-text)}

/* ---------- Empty state ---------- */
.empty-card{
  border:1px dashed var(--c-line-strong);border-radius:var(--r-md);
  padding:var(--sp-8) var(--sp-5);text-align:center;background:rgba(255,255,255,.015);
}
.empty-card .empty-ico{
  width:44px;height:44px;margin:0 auto var(--sp-4);border-radius:50%;
  border:1px solid var(--c-line-strong);display:flex;align-items:center;justify-content:center;
  color:var(--c-primary);font-family:var(--mono);font-weight:800;
}
.empty-card h2{font-size:20px;color:var(--c-text);margin-bottom:8px}
.empty-card p{color:var(--c-text-2);font-size:15px;margin-bottom:var(--sp-5)}

/* ---------- Sidebar ---------- */
.article-side{display:grid;gap:var(--sp-5);align-content:start}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:var(--sp-5);
}
.side-card h2,.side-card h3{
  font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--c-text-3);
  text-transform:uppercase;margin-bottom:var(--sp-3);
}
.toc-list{display:grid;gap:2px;border-left:1px solid var(--c-line);padding-left:0}
.toc-list a{
  display:block;padding:7px 0 7px 14px;margin-left:-1px;border-left:2px solid transparent;
  font-size:14px;line-height:1.5;color:var(--c-text-2);
}
.toc-list a:hover{color:var(--c-text);border-left-color:rgba(0,224,138,.4)}
.toc-list a.is-current{color:var(--c-primary);border-left-color:var(--c-primary);background:rgba(0,224,138,.05)}
.toc-list a.lv3{padding-left:26px;font-size:13px;color:var(--c-text-3)}
.related-list{display:grid;gap:var(--sp-3)}
.related-item{
  display:block;padding-bottom:var(--sp-3);border-bottom:1px solid var(--c-line);
}
.related-item:last-child{border-bottom:0;padding-bottom:0}
.related-item .tag{font-size:12px;color:var(--c-primary)}
.related-item strong{display:block;margin-top:4px;font-size:15px;font-weight:600;color:var(--c-text);line-height:1.5}
.related-item:hover strong{color:var(--c-primary)}
.side-cta{background:linear-gradient(180deg,rgba(0,224,138,.10),rgba(0,224,138,.02));border-color:var(--c-line-strong)}
.side-cta p{font-size:14px;color:var(--c-text-2);margin-bottom:var(--sp-4)}

/* ---------- Related grid ---------- */
.section{padding:var(--sp-8) 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--sp-4);margin-bottom:var(--sp-6)}
.section-head h2{
  position:relative;padding-left:14px;font-size:clamp(22px,3vw,30px);font-weight:700;line-height:1.3;
}
.section-head h2::before{content:"";position:absolute;left:0;top:.18em;width:4px;height:.9em;border-radius:2px;background:var(--c-primary)}
.section-head .sub{font-size:13px;color:var(--c-text-3);margin-top:6px;max-width:52ch}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--c-primary);white-space:nowrap}
.link-arrow i{font-style:normal;transition:transform 160ms ease}
.link-arrow:hover i{transform:translateX(2px)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--sp-5)}
.post-card{
  display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);overflow:hidden;height:100%;
  transition:border-color 160ms ease,box-shadow 160ms ease,transform 160ms ease;
}
.post-card:hover{border-color:var(--c-line-strong);box-shadow:var(--sh-2);transform:translateY(-2px)}
.post-thumb{aspect-ratio:16/10;overflow:hidden;border-bottom:1px solid var(--c-line)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 160ms ease}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.post-body{padding:var(--sp-4) var(--sp-5) var(--sp-5);display:flex;flex-direction:column;gap:var(--sp-3);flex:1}
.post-body h3{
  font-size:17px;font-weight:600;line-height:1.5;color:var(--c-text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card:hover .post-body h3{color:var(--c-primary)}
.post-body p{
  font-size:14px;color:var(--c-text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{margin-top:auto;display:flex;align-items:center;gap:var(--sp-3);font-size:13px;color:var(--c-text-3)}
.post-meta .num{font-size:13px;color:var(--c-text-3)}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item .faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-4);
  width:100%;min-height:60px;padding:14px 4px;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-text);
}
.faq-item .faq-q:hover{color:var(--c-primary)}
.faq-item .faq-sign{
  flex-shrink:0;width:22px;height:22px;position:relative;color:var(--c-primary);
  transition:transform 160ms ease;
}
.faq-item .faq-sign::before,.faq-item .faq-sign::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-item .faq-sign::before{width:14px;height:2px}
.faq-item .faq-sign::after{width:2px;height:14px;transition:opacity 160ms ease}
.faq-item.is-open{background:rgba(0,224,138,.05)}
.faq-item.is-open .faq-sign{transform:rotate(135deg)}
.faq-item .faq-a{display:none;padding:0 4px 20px;font-size:15px;line-height:1.8;color:var(--c-text-2);border-top:1px solid var(--c-line);margin-top:-2px;padding-top:16px}
.faq-item.is-open .faq-a{display:block}

/* ---------- CTA / Lead ---------- */
.cta-band{
  position:relative;overflow:hidden;border:1px solid var(--c-line);border-radius:var(--r-lg);
  background:
    radial-gradient(900px 380px at 88% -20%,rgba(0,224,138,.14),transparent 62%),
    var(--c-surface);
  padding:clamp(24px,4vw,48px);
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:repeating-linear-gradient(0deg,rgba(255,255,255,.6) 0 1px,transparent 1px 48px),
                   repeating-linear-gradient(90deg,rgba(255,255,255,.6) 0 1px,transparent 1px 48px);
}
.cta-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:var(--sp-7);align-items:start}
.cta-copy h2{font-size:clamp(22px,3vw,30px);font-weight:700;line-height:1.3;margin-bottom:var(--sp-3)}
.cta-copy p{color:var(--c-text-2);font-size:15px;margin-bottom:var(--sp-4);max-width:44ch}
.cta-points{display:grid;gap:10px}
.cta-points li{position:relative;padding-left:22px;font-size:14px;color:var(--c-text-2)}
.cta-points li::before{
  content:"";position:absolute;left:2px;top:.62em;width:8px;height:8px;border-radius:2px;background:var(--c-accent);
}
.form-card{background:var(--c-surface-2);border:1px solid var(--c-line);border-radius:var(--r-md);padding:var(--sp-5)}
.field{margin-bottom:var(--sp-4)}
.field label{display:block;font-size:13px;color:var(--c-text-2);margin-bottom:6px}
.field input,.field select,.field textarea{
  width:100%;min-height:44px;padding:10px 12px;background:var(--c-bg);
  border:1px solid var(--c-line);border-radius:var(--r-sm);color:var(--c-text);
  transition:border-color 160ms ease,box-shadow 160ms ease;
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--c-text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);box-shadow:var(--glow);
}
.privacy-line{display:flex;align-items:flex-start;gap:8px;font-size:12px;color:var(--c-text-3);margin-top:var(--sp-3);line-height:1.6}
.privacy-line .warn{color:var(--c-warn);font-style:normal}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--c-bg-deep);position:relative;
  padding:var(--sp-8) 0 var(--sp-6);margin-top:var(--sp-8);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,224,138,.5),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:var(--sp-6)}
.footer-brand p{margin-top:var(--sp-4);font-size:14px;color:var(--c-text-2);max-width:38ch;line-height:1.75}
.footer-brand .foot-note{font-size:12px;color:var(--c-text-3);margin-top:var(--sp-3)}
.footer-col h3{font-size:14px;font-weight:700;color:var(--c-text);margin-bottom:var(--sp-4);letter-spacing:.02em}
.footer-col ul{display:grid;gap:10px}
.footer-col a,.footer-col span{font-size:14px;color:var(--c-text-2)}
.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--sp-3);
  margin-top:var(--sp-7);padding-top:var(--sp-5);border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-text-3);
}
.footer-bottom .num{font-size:13px;color:var(--c-text-3)}

/* ---------- Responsive ---------- */
@media (min-width:1024px){
  .article-grid{grid-template-columns:minmax(0,1fr) 260px;gap:var(--sp-7)}
  .article-side{position:sticky;top:calc(var(--header-h) + 24px)}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .nav-actions .btn-primary{display:none}
  .nav-toggle{display:flex}
  .footer-grid{grid-template-columns:1fr 1fr;gap:var(--sp-6)}
  .cta-grid{grid-template-columns:1fr;gap:var(--sp-5)}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .section{padding:var(--sp-7) 0}
  .article-shell{padding:var(--sp-5) 0 var(--sp-7)}
  .article-side{grid-template-columns:1fr 1fr}
  .side-cta{grid-column:1 / -1}
}
@media (max-width:767px){
  :root{--header-h:56px}
  .logo-text{font-size:16px}
  .crumb .current{max-width:20ch}
  .article-head h1{max-width:none}
  .card-grid{grid-template-columns:1fr}
  .article-side{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:var(--sp-2)}
  .footer-grid{grid-template-columns:1fr;gap:var(--sp-5)}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .prose{font-size:16px;line-height:1.85}
  .btn{width:auto}
  .form-card{padding:var(--sp-4)}
}
@media (max-width:519px){
  .article-meta{gap:var(--sp-3)}
  .post-body{padding:var(--sp-4)}
  .cta-band{padding:var(--sp-5) var(--sp-4)}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
  --c-bg:#0A0D0C;
  --c-bg-deep:#060908;
  --c-surface:#141B19;
  --c-surface-2:#1B2422;
  --c-line:rgba(255,255,255,.08);
  --c-line-strong:rgba(0,224,138,.35);
  --c-primary:#00E08A;
  --c-primary-ink:#04140D;
  --c-accent:#C8FF4D;
  --c-warn:#FF6A3D;
  --c-text:#ECF3EF;
  --c-text-2:#A7B4AE;
  --c-text-3:#6F7C77;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(0,0,0,.45);
  --sh-2:0 16px 48px rgba(0,0,0,.55);
  --glow:0 0 0 1px rgba(0,224,138,.35), 0 0 24px rgba(0,224,138,.18);
  --font-sans:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono",Consolas,"Courier New",monospace;
  --header-h:68px;
  --tr:160ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-md)}
a{color:var(--c-primary);text-decoration:none;transition:color var(--tr),border-color var(--tr),background var(--tr),transform var(--tr),box-shadow var(--tr)}
a:hover{color:var(--c-text)}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
::selection{background:rgba(0,224,138,.28);color:var(--c-text)}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-inline:clamp(16px,4vw,40px);
}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:70;
  background:rgba(10,13,12,.82);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--tr),background var(--tr);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:1px;
  background:linear-gradient(90deg,var(--c-primary) 0%,rgba(0,224,138,.15) 38%,transparent 70%);
  pointer-events:none;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);background:rgba(10,13,12,.94)}
.header-inner{
  display:flex;
  align-items:center;
  gap:clamp(12px,2.4vw,32px);
  min-height:var(--header-h);
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--c-text);
  flex:0 0 auto;
}
.logo:hover{color:var(--c-text)}
.logo-mark{
  width:28px;height:28px;
  border-radius:7px;
  background:var(--c-primary);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:2px;
  transform:skewX(-10deg);
  box-shadow:0 0 14px rgba(0,224,138,.35);
  flex:0 0 auto;
}
.logo-mark i{
  width:3px;height:3px;
  border-radius:50%;
  background:var(--c-primary-ink);
  transform:skewX(10deg);
  display:block;
}
.logo-text{font-size:18px;font-weight:800;letter-spacing:.01em;white-space:nowrap}
.nav-links{
  display:flex;
  align-items:center;
  gap:clamp(6px,1.6vw,26px);
  margin-left:auto;
}
.nav-links a{
  position:relative;
  padding:8px 2px;
  font-size:15px;
  color:var(--c-text-2);
  white-space:nowrap;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--c-primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--tr);
  box-shadow:0 0 12px rgba(0,224,138,.55);
}
.nav-links a:hover{color:var(--c-text)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--c-primary)}
.nav-links a.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.header-link{font-size:14px;color:var(--c-text-2)}
.header-link:hover{color:var(--c-primary)}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:var(--r-sm);
  border:1px solid var(--c-line);
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
  flex:0 0 auto;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-text);transition:transform var(--tr),opacity var(--tr)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.65);
  opacity:0;
  visibility:hidden;
  transition:opacity var(--tr),visibility var(--tr);
  z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;
  top:0;right:0;
  height:100%;
  width:84vw;
  max-width:340px;
  background:var(--c-surface);
  border-left:1px solid var(--c-line);
  padding:24px 20px 32px;
  display:flex;
  flex-direction:column;
  gap:8px;
  transform:translateX(101%);
  transition:transform var(--tr);
  z-index:90;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-close{
  align-self:flex-end;
  width:40px;height:40px;
  border-radius:var(--r-sm);
  border:1px solid var(--c-line);
  color:var(--c-text-2);
  font-size:20px;
  line-height:1;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  margin-bottom:8px;
}
.drawer-close:hover{color:var(--c-primary);border-color:var(--c-line-strong)}
.drawer-links{display:flex;flex-direction:column}
.drawer-links a{
  display:flex;
  align-items:center;
  min-height:52px;
  font-size:16px;
  color:var(--c-text-2);
  border-bottom:1px solid var(--c-line);
}
.drawer-links a.is-active{color:var(--c-primary)}
.drawer .btn{margin-top:20px;width:100%}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:background var(--tr),color var(--tr),box-shadow var(--tr),transform var(--tr),border-color var(--tr),opacity var(--tr);
}
.btn-primary{background:var(--c-primary);color:var(--c-primary-ink)}
.btn-primary:hover{color:var(--c-primary-ink);filter:brightness(1.06);box-shadow:var(--glow)}
.btn-primary:active{transform:scale(.98)}
.btn-primary[disabled],.btn-primary.is-loading{opacity:.5;pointer-events:none}
.btn-ghost{background:transparent;color:var(--c-text);border-color:var(--c-line)}
.btn-ghost:hover{color:var(--c-primary);border-color:var(--c-line-strong);background:rgba(0,224,138,.06)}
.btn-ghost:active{transform:scale(.98)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}

/* ---------- 标签 / 徽章 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:2px 8px;
  font-size:12px;
  line-height:1.7;
  border-radius:var(--r-pill);
  background:var(--c-surface-2);
  color:var(--c-text-2);
  border:1px solid var(--c-line);
  white-space:nowrap;
}
.tag-primary{color:var(--c-primary);border-color:rgba(0,224,138,.28);background:rgba(0,224,138,.08)}
.tag-accent{color:var(--c-accent);border-color:rgba(200,255,77,.24);background:rgba(200,255,77,.07)}
.badge-live{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:4px 11px;
  font-size:12px;
  border-radius:var(--r-pill);
  color:var(--c-primary);
  background:rgba(0,224,138,.1);
  border:1px solid rgba(0,224,138,.3);
}
.badge-live::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--c-primary);
  box-shadow:0 0 8px rgba(0,224,138,.9);
}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px;
  font-size:13px;
  color:var(--c-text-3);
  padding-top:24px;
}
.breadcrumb a{color:var(--c-text-3)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:var(--c-text-3);opacity:.7}
.breadcrumb .current{color:var(--c-text-2)}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  padding-bottom:clamp(32px,5vw,56px);
  background:
    radial-gradient(1200px 480px at 78% -10%, rgba(0,224,138,.14), transparent 60%),
    repeating-linear-gradient(90deg, rgba(255,255,255,.04) 0 1px, transparent 1px 120px),
    repeating-linear-gradient(0deg, rgba(255,255,255,.04) 0 1px, transparent 1px 120px);
}
.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:clamp(24px,4vw,48px);
  align-items:center;
  padding-top:clamp(24px,4vw,48px);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--c-primary);
  letter-spacing:.04em;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;height:2px;border-radius:2px;
  background:var(--c-primary);
  box-shadow:0 0 10px rgba(0,224,138,.6);
}
h1{
  font-size:clamp(30px,5vw,52px);
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.01em;
  max-width:16em;
}
.hero-sub{
  margin-top:18px;
  font-size:clamp(15px,1.6vw,17px);
  color:var(--c-text-2);
  max-width:42em;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-figure{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  background:var(--c-surface);
}
.hero-figure img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:0;
}
.hero-figure::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(10,13,12,0) 40%,rgba(10,13,12,.72) 100%);
  pointer-events:none;
}
.hero-figure figcaption{
  position:absolute;
  left:16px;right:16px;bottom:14px;
  z-index:2;
  font-size:13px;
  color:var(--c-text-2);
}

/* ---------- 数据条 ---------- */
.stats-bar{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  margin-top:clamp(32px,5vw,56px);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  background:rgba(20,27,25,.62);
  overflow:hidden;
}
.stat{
  padding:22px clamp(14px,2vw,24px);
  border-right:1px solid var(--c-line);
}
.stat:last-child{border-right:0}
.stat-value{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(24px,3vw,32px);
  font-weight:800;
  line-height:1.1;
  color:var(--c-text);
}
.stat-value .unit{font-size:14px;color:var(--c-primary);margin-left:4px;font-weight:700}
.stat-label{margin-top:6px;font-size:13px;color:var(--c-text-2)}

/* ---------- 通用板块 ---------- */
.section{padding-block:clamp(48px,7vw,96px)}
.section-tight{padding-block:clamp(36px,5vw,64px)}
.section-head{margin-bottom:clamp(24px,3vw,40px);max-width:720px}
.section-head h2{display:flex;align-items:center;gap:14px}
h2{
  font-size:clamp(24px,3.2vw,34px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.005em;
}
.section-head h2::before{
  content:"";
  width:4px;
  height:.9em;
  border-radius:2px;
  background:var(--c-primary);
  flex:0 0 auto;
  box-shadow:0 0 12px rgba(0,224,138,.5);
}
.section-desc{margin-top:12px;font-size:14px;color:var(--c-text-2)}

/* ---------- 目录 + 长内容 ---------- */
.content-layout{
  display:grid;
  grid-template-columns:240px minmax(0,1fr);
  gap:clamp(24px,4vw,56px);
  align-items:start;
}
.toc{
  position:sticky;
  top:calc(var(--header-h) + 24px);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  background:var(--c-surface);
  padding:20px 18px;
}
.toc-title{
  font-size:12px;
  letter-spacing:.12em;
  color:var(--c-text-3);
  margin-bottom:12px;
  text-transform:uppercase;
}
.toc ol{display:flex;flex-direction:column;gap:2px}
.toc a{
  display:flex;
  align-items:baseline;
  gap:9px;
  padding:8px 8px;
  font-size:14px;
  color:var(--c-text-2);
  border-radius:var(--r-sm);
  border-left:2px solid transparent;
  line-height:1.5;
}
.toc a .idx{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:12px;
  color:var(--c-text-3);
}
.toc a:hover{background:rgba(255,255,255,.03);color:var(--c-text)}
.toc a.is-current{
  color:var(--c-primary);
  background:rgba(0,224,138,.07);
  border-left-color:var(--c-primary);
}
.toc a.is-current .idx{color:var(--c-accent)}
.toc-cta{
  display:flex;
  align-items:center;
  justify-content:center;
  margin-top:16px;
  min-height:44px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line-strong);
  font-size:14px;
  font-weight:600;
  color:var(--c-primary);
}
.toc-cta:hover{background:rgba(0,224,138,.1);color:var(--c-primary);box-shadow:var(--glow)}

.content-main{max-width:720px}
.step-block{
  padding-block:clamp(22px,3vw,32px);
  border-top:1px solid var(--c-line);
  scroll-margin-top:calc(var(--header-h) + 24px);
}
.step-block:first-child{border-top:0;padding-top:0}
.step-head{display:flex;align-items:flex-start;gap:16px;margin-bottom:14px}
.step-num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(24px,3vw,30px);
  font-weight:800;
  line-height:1;
  color:var(--c-accent);
  opacity:.92;
  flex:0 0 auto;
  padding-top:4px;
}
.step-head h3{
  font-size:clamp(19px,2.2vw,22px);
  font-weight:600;
  line-height:1.4;
  padding-top:2px;
}
.step-block p{color:var(--c-text-2);margin-bottom:16px}
.step-block p:last-child{margin-bottom:0}
.step-block strong{color:var(--c-text);font-weight:600}
.point-list{
  margin-top:4px;
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:18px 20px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
}
.point-list li{
  position:relative;
  padding-left:18px;
  font-size:15px;
  line-height:1.7;
  color:var(--c-text-2);
}
.point-list li::before{
  content:"";
  position:absolute;
  left:0;top:.66em;
  width:7px;height:7px;
  border-radius:2px;
  background:var(--c-primary);
}
.point-list li b{color:var(--c-text);font-weight:600}
.callout{
  margin-top:18px;
  padding:16px 20px;
  background:var(--c-surface-2);
  border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  font-size:15px;
  color:var(--c-text-2);
}
.callout.is-warn{border-left-color:var(--c-warn)}
.callout.is-warn strong{color:var(--c-warn);font-weight:600}

/* ---------- 适用场景（图文） ---------- */
.scene-grid{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:clamp(24px,4vw,56px);
  align-items:center;
}
.scene-figure{
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
}
.scene-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0}
.scene-list{display:flex;flex-direction:column}
.scene-item{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:16px;
  padding:20px 0;
  border-top:1px solid var(--c-line);
  transition:background var(--tr);
}
.scene-item:first-child{border-top:0;padding-top:0}
.scene-item .idx{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:14px;
  font-weight:700;
  color:var(--c-text-3);
  padding-top:4px;
  transition:color var(--tr);
}
.scene-item:hover .idx{color:var(--c-accent)}
.scene-item h3{font-size:18px;font-weight:600;margin-bottom:6px}
.scene-item p{font-size:15px;color:var(--c-text-2)}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--c-line);max-width:820px}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:60px;
  padding:14px 4px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--c-text);
  transition:color var(--tr),background var(--tr);
}
.faq-q:hover{color:var(--c-primary)}
.faq-icon{
  position:relative;
  flex:0 0 auto;
  width:16px;height:16px;
  color:var(--c-primary);
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:currentColor;
  border-radius:2px;
  transition:transform var(--tr),opacity var(--tr);
}
.faq-icon::before{width:14px;height:2px;transform:translate(-50%,-50%)}
.faq-icon::after{width:2px;height:14px;transform:translate(-50%,-50%)}
.faq-q[aria-expanded="true"] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{
  display:none;
  padding:0 4px 20px;
  font-size:15px;
  line-height:1.8;
  color:var(--c-text-2);
  border-top:1px solid var(--c-line);
  margin-top:-1px;
  padding-top:16px;
}
.faq-item.is-open{background:rgba(0,224,138,.05)}
.faq-item.is-open .faq-a{display:block}

/* ---------- CTA / 表单 ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  border-top:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);
  background:
    radial-gradient(900px 360px at 15% 0%, rgba(0,224,138,.12), transparent 62%),
    repeating-linear-gradient(90deg, rgba(255,255,255,.035) 0 1px, transparent 1px 120px),
    repeating-linear-gradient(0deg, rgba(255,255,255,.035) 0 1px, transparent 1px 120px),
    var(--c-bg-deep);
}
.cta-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:clamp(24px,4vw,56px);
  align-items:start;
}
.cta-copy h2{max-width:16em}
.cta-copy p{margin-top:16px;color:var(--c-text-2);max-width:40em}
.cta-points{display:flex;flex-direction:column;gap:10px;margin-top:22px}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--c-text-2)}
.cta-points li::before{
  content:"";
  flex:0 0 auto;
  width:6px;height:6px;
  margin-top:.7em;
  border-radius:50%;
  background:var(--c-primary);
}
.form-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  padding:clamp(20px,3vw,28px);
  box-shadow:var(--sh-1);
}
.form-row{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}
.form-row label{font-size:13px;color:var(--c-text-2)}
.form-row .req{color:var(--c-warn);margin-left:2px}
.field{
  height:44px;
  width:100%;
  padding:0 14px;
  border-radius:var(--r-sm);
  border:1px solid var(--c-line);
  background:var(--c-surface-2);
  color:var(--c-text);
  transition:border-color var(--tr),box-shadow var(--tr),background var(--tr);
  appearance:none;
  -webkit-appearance:none;
}
select.field{
  background-image:linear-gradient(45deg,transparent 50%,var(--c-text-2) 50%),linear-gradient(135deg,var(--c-text-2) 50%,transparent 50%);
  background-position:calc(100% - 18px) 19px,calc(100% - 12px) 19px;
  background-size:6px 6px,6px 6px;
  background-repeat:no-repeat;
  padding-right:38px;
}
textarea.field{height:auto;min-height:104px;padding:12px 14px;resize:vertical;line-height:1.7}
.field::placeholder{color:var(--c-text-3)}
.field:hover{border-color:rgba(255,255,255,.16)}
.field:focus{
  outline:none;
  border-color:var(--c-primary);
  box-shadow:var(--glow);
  background:var(--c-surface);
}
.field.is-error{border-color:var(--c-warn)}
.err-msg{display:none;font-size:13px;color:var(--c-warn)}
.err-msg.is-show{display:block}
.form-foot{
  display:flex;
  align-items:flex-start;
  gap:8px;
  margin-top:14px;
  font-size:12px;
  line-height:1.7;
  color:var(--c-text-3);
}
.form-foot svg{flex:0 0 auto;margin-top:2px;color:var(--c-warn)}
.checkbox{
  display:flex;
  align-items:flex-start;
  gap:9px;
  font-size:12px;
  line-height:1.7;
  color:var(--c-text-3);
  margin-top:12px;
  cursor:pointer;
}
.checkbox input{
  appearance:none;
  -webkit-appearance:none;
  flex:0 0 auto;
  width:16px;height:16px;
  margin-top:2px;
  border-radius:4px;
  border:1px solid var(--c-line-strong);
  background:var(--c-surface-2);
  cursor:pointer;
  transition:background var(--tr),border-color var(--tr);
  position:relative;
}
.checkbox input:checked{background:var(--c-primary);border-color:var(--c-primary)}
.checkbox input:checked::after{
  content:"";
  position:absolute;
  left:5px;top:1px;
  width:4px;height:9px;
  border:solid var(--c-primary-ink);
  border-width:0 2px 2px 0;
  transform:rotate(45deg);
}
.form-scope{display:flex;justify-content:flex-end;margin-top:18px}
.form-scope .btn{width:100%}
.form-note{
  margin-top:12px;
  font-size:13px;
  color:var(--c-primary);
  display:none;
}
.form-note.is-show{display:block}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-bg-deep);
  border-top:1px solid var(--c-line);
  position:relative;
  padding:64px 0 32px;
}
.site-footer::before{
  content:"";
  position:absolute;
  left:0;right:0;top:-1px;
  height:1px;
  background:linear-gradient(90deg,var(--c-primary) 0%,rgba(0,224,138,.15) 42%,transparent 78%);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:clamp(24px,3vw,40px);
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--c-text-2);max-width:34em}
.footer-brand .foot-note{margin-top:12px;font-size:12px;color:var(--c-text-3)}
.footer-col h3{
  font-size:13px;
  letter-spacing:.08em;
  color:var(--c-text-3);
  font-weight:600;
  margin-bottom:14px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a,.footer-col span{font-size:14px;color:var(--c-text-2)}
.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  justify-content:space-between;
  align-items:center;
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid var(--c-line);
  font-size:13px;
  color:var(--c-text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-links,.header-actions{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{justify-content:space-between}
  .hero-grid{grid-template-columns:1fr}
  .hero-figure{order:-1}
  .content-layout{grid-template-columns:1fr}
  .toc{position:static;order:-1}
  .toc ol{flex-direction:row;flex-wrap:wrap;gap:6px}
  .toc a{border-left:0;border:1px solid var(--c-line);padding:6px 12px;font-size:13px}
  .toc a.is-current{border-color:var(--c-line-strong)}
  .toc-cta{max-width:260px}
  .scene-grid{grid-template-columns:1fr}
  .cta-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  :root{--header-h:56px}
  .logo-text{font-size:16px}
  .stats-bar{grid-template-columns:1fr 1fr}
  .stat{border-right:0;border-bottom:1px solid var(--c-line)}
  .stat:nth-child(odd){border-right:1px solid var(--c-line)}
  .stat:nth-last-child(-n+2){border-bottom:0}
  .section{padding-block:clamp(40px,8vw,64px)}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .hero-cta .btn{width:100%}
  .step-head{gap:12px}
  .point-list{padding:16px}
  .toc ol{gap:4px}
  .toc a{font-size:12px;padding:6px 10px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none !important;animation:none !important}
}

/* roulang page: category2 */
:root{
  --c-bg:#0A0D0C;
  --c-bg-deep:#060908;
  --c-surface:#141B19;
  --c-surface-2:#1B2422;
  --c-line:rgba(255,255,255,.08);
  --c-line-strong:rgba(0,224,138,.35);
  --c-primary:#00E08A;
  --c-primary-ink:#04140D;
  --c-accent:#C8FF4D;
  --c-warn:#FF6A3D;
  --c-text:#ECF3EF;
  --c-text-2:#A7B4AE;
  --c-text-3:#6F7C77;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(0,0,0,.45);
  --sh-2:0 16px 48px rgba(0,0,0,.55);
  --glow:0 0 0 1px rgba(0,224,138,.35), 0 0 24px rgba(0,224,138,.18);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,"JetBrains Mono",Consolas,"Courier New",monospace;
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px;
  --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:96px;
  --nav-h:68px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color .16s ease,opacity .16s ease;}
a:hover{color:var(--c-text);}
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;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3{letter-spacing:-.01em;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(0,224,138,.28);color:var(--c-text);}

.container{
  width:100%;
  max-width:1200px;
  margin-inline:auto;
  padding-inline:clamp(16px,4vw,40px);
}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;font-weight:700;}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(10,13,12,.82);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  transition:box-shadow .16s ease;
}
.site-header::after{
  content:"";
  display:block;
  height:1px;
  background:linear-gradient(90deg,#00E08A 0%,rgba(0,224,138,.15) 38%,transparent 70%);
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{
  display:flex;
  align-items:center;
  gap:var(--sp-5);
  height:var(--nav-h);
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--c-text);
  flex:0 0 auto;
}
.logo:hover{color:var(--c-text);}
.logo-mark{
  position:relative;
  width:26px;
  height:26px;
  border-radius:7px;
  background:linear-gradient(135deg,var(--c-primary),rgba(0,224,138,.35));
  transform:skewX(-8deg);
  display:inline-flex;
  align-items:flex-end;
  justify-content:center;
  gap:2px;
  padding-bottom:6px;
  flex:0 0 auto;
}
.logo-mark i{
  width:3px;
  height:3px;
  border-radius:50%;
  background:var(--c-primary-ink);
  display:block;
  transform:skewX(8deg);
}
.logo-mark i:nth-child(2){height:6px;border-radius:2px;}
.logo-text{
  font-size:18px;
  font-weight:800;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:var(--sp-5);
  margin-left:auto;
}
.nav-links a{
  position:relative;
  font-size:15px;
  color:var(--c-text-2);
  padding:8px 2px;
  line-height:1.4;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:2px;
  right:2px;
  bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--c-primary);
  opacity:0;
  transform:scaleX(.6);
  transition:opacity .16s ease,transform .16s ease;
}
.nav-links a:hover{color:var(--c-text);}
.nav-links a:hover::after{opacity:.5;transform:scaleX(1);}
.nav-links a.is-active{color:var(--c-primary);}
.nav-links a.is-active::after{opacity:1;transform:scaleX(1);box-shadow:0 0 12px rgba(0,224,138,.6);}
.header-actions{
  display:flex;
  align-items:center;
  gap:var(--sp-3);
  flex:0 0 auto;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .16s ease,box-shadow .16s ease,background-color .16s ease,border-color .16s ease,color .16s ease,opacity .16s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--c-primary);
  color:var(--c-primary-ink);
}
.btn-primary:hover{
  color:var(--c-primary-ink);
  box-shadow:var(--glow);
  filter:brightness(1.06);
}
.btn-primary:active{transform:scale(.98);}
.btn-primary:disabled{opacity:.5;cursor:not-allowed;box-shadow:none;filter:none;}
.btn-ghost{
  background:transparent;
  color:var(--c-text-2);
  border-color:var(--c-line);
}
.btn-ghost:hover{
  color:var(--c-text);
  border-color:var(--c-line-strong);
  transform:translateY(-1px);
}
.btn-outline{
  background:transparent;
  color:var(--c-text);
  border-color:var(--c-line-strong);
}
.btn-outline:hover{color:var(--c-primary);box-shadow:var(--glow);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}

.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:var(--r-sm);
  border:1px solid var(--c-line);
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--c-text);
  transition:transform .16s ease,opacity .16s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.6);
  z-index:90;
  opacity:0;
  pointer-events:none;
  transition:opacity .16s ease;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;
  top:0;
  right:0;
  bottom:0;
  width:84vw;
  max-width:340px;
  background:var(--c-surface);
  z-index:100;
  transform:translateX(100%);
  transition:transform .2s ease;
  display:flex;
  flex-direction:column;
  padding:var(--sp-4) var(--sp-5) var(--sp-6);
  border-left:1px solid var(--c-line);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-4);
  padding-bottom:var(--sp-4);
  border-bottom:1px solid var(--c-line);
}
.drawer-close{
  width:44px;height:44px;
  border-radius:var(--r-sm);
  border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;
  font-size:20px;
  color:var(--c-text-2);
}
.drawer-close:hover{color:var(--c-text);border-color:var(--c-line-strong);}
.drawer-nav{display:flex;flex-direction:column;margin-top:var(--sp-4);}
.drawer-nav a{
  display:flex;
  align-items:center;
  min-height:52px;
  padding:0 4px;
  font-size:16px;
  color:var(--c-text-2);
  border-bottom:1px solid var(--c-line);
}
.drawer-nav a.is-active{color:var(--c-primary);}
.drawer-cta{margin-top:auto;padding-top:var(--sp-5);}
.drawer-cta .btn{width:100%;}

/* ---------- breadcrumb ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--c-text-3);
  padding-top:var(--sp-6);
}
.breadcrumb a{color:var(--c-text-3);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb span[aria-current]{color:var(--c-text-2);}
.breadcrumb .sep{color:var(--c-text-3);opacity:.7;}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  padding-bottom:var(--sp-7);
  border-bottom:1px solid var(--c-line);
  background:
    radial-gradient(1200px 480px at 78% -10%, rgba(0,224,138,.14), transparent 60%),
    repeating-linear-gradient(0deg, rgba(255,255,255,.04) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(90deg, rgba(255,255,255,.04) 0 1px, transparent 1px 64px);
}
.page-hero .container{position:relative;z-index:1;}
.hero-narrow{max-width:820px;padding-top:var(--sp-6);}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  line-height:1.6;
  padding:2px 10px;
  border-radius:var(--r-pill);
  background:var(--c-surface-2);
  color:var(--c-text-2);
  border:1px solid var(--c-line);
}
.badge-primary{color:var(--c-primary);border-color:var(--c-line-strong);background:rgba(0,224,138,.08);}
.badge-accent{color:var(--c-accent);background:rgba(200,255,77,.08);border-color:rgba(200,255,77,.28);}
h1{
  font-size:clamp(30px,5vw,52px);
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.01em;
  margin-top:var(--sp-4);
}
.hero-sub{
  margin-top:var(--sp-4);
  font-size:17px;
  color:var(--c-text-2);
  max-width:640px;
}
.pill-filter{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:var(--sp-6);
}
.pill{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:0 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  background:rgba(255,255,255,.02);
  color:var(--c-text-2);
  font-size:14px;
  transition:all .16s ease;
}
.pill:hover{
  color:var(--c-primary);
  border-color:var(--c-line-strong);
  box-shadow:var(--glow);
  transform:translateY(-1px);
}
.pill.is-current{color:var(--c-primary);border-color:var(--c-line-strong);}

/* ---------- sections ---------- */
.section{padding-block:var(--sp-8);}
.section-tight{padding-block:var(--sp-7);}
.section-line{border-top:1px solid var(--c-line);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:var(--sp-5);
  margin-bottom:var(--sp-7);
  flex-wrap:wrap;
}
.section-head h2{
  position:relative;
  font-size:clamp(24px,3.2vw,34px);
  font-weight:700;
  line-height:1.3;
  padding-left:16px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.16em;
  width:4px;
  height:.9em;
  border-radius:2px;
  background:var(--c-primary);
}
.section-head .sub{
  font-size:13px;
  color:var(--c-text-3);
  margin-top:8px;
  padding-left:16px;
}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--c-primary);
}
.link-more span{transition:transform .16s ease;}
.link-more:hover span{transform:translateX(2px);}

/* ---------- split blocks ---------- */
.split{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:var(--sp-7);
  align-items:center;
}
.split + .split{margin-top:var(--sp-8);}
.split-media{
  position:relative;
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
}
.split-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  transition:transform .16s ease;
}
.split:hover .split-media img{transform:scale(1.02);}
.split-body .idx{
  display:block;
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  font-size:14px;
  font-weight:800;
  color:var(--c-accent);
  letter-spacing:.12em;
  margin-bottom:var(--sp-3);
}
.split-body h2{
  font-size:clamp(22px,2.4vw,28px);
  font-weight:700;
  line-height:1.35;
}
.split-body p{
  margin-top:var(--sp-4);
  color:var(--c-text-2);
  font-size:16px;
  max-width:42em;
}
.mini-points{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:var(--sp-4);
  margin-top:var(--sp-5);
  padding-top:var(--sp-5);
  border-top:1px solid var(--c-line);
}
.mini-points li{
  background:var(--c-surface-2);
  border:1px solid var(--c-line);
  border-radius:var(--r-sm);
  padding:14px 16px;
}
.mini-points strong{
  display:block;
  font-size:14px;
  font-weight:700;
  color:var(--c-text);
  margin-bottom:4px;
}
.mini-points span{
  display:block;
  font-size:13px;
  line-height:1.65;
  color:var(--c-text-3);
}
.split:nth-child(even) .split-media{order:2;}

/* ---------- check cards ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--sp-5);
}
.info-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  padding:28px;
  transition:border-color .16s ease,box-shadow .16s ease,transform .16s ease;
  display:flex;
  flex-direction:column;
  gap:var(--sp-3);
}
.info-card:hover{
  border-color:var(--c-line-strong);
  box-shadow:var(--sh-2);
  transform:translateY(-2px);
}
.info-card .card-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-3);
}
.info-card .card-no{
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  font-size:13px;
  font-weight:800;
  color:var(--c-accent);
  letter-spacing:.1em;
}
.info-card h3{
  font-size:20px;
  font-weight:600;
  line-height:1.4;
}
.info-card p{
  font-size:15px;
  color:var(--c-text-2);
}
.info-card ul{margin-top:auto;padding-top:var(--sp-3);border-top:1px solid var(--c-line);}
.info-card li{
  position:relative;
  padding-left:16px;
  font-size:14px;
  color:var(--c-text-3);
  line-height:1.8;
}
.info-card li::before{
  content:"";
  position:absolute;
  left:0;
  top:.78em;
  width:6px;
  height:6px;
  border-radius:2px;
  background:var(--c-primary);
  opacity:.85;
}

/* ---------- notice ---------- */
.notice{
  display:flex;
  gap:var(--sp-4);
  align-items:flex-start;
  padding:18px 20px;
  border-radius:var(--r-md);
  border:1px solid var(--c-line-strong);
  background:rgba(0,224,138,.05);
  font-size:14px;
  color:var(--c-text-2);
  line-height:1.75;
}
.notice .dot{
  flex:0 0 auto;
  width:8px;height:8px;
  border-radius:50%;
  background:var(--c-primary);
  margin-top:.6em;
  box-shadow:0 0 10px rgba(0,224,138,.7);
}

/* ---------- FAQ ---------- */
.faq-list{
  border-top:1px solid var(--c-line);
}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-4);
  width:100%;
  min-height:60px;
  padding:14px 4px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--c-text);
  transition:color .16s ease,background-color .16s ease;
}
.faq-q:hover{color:var(--c-primary);}
.faq-item.is-open .faq-q{color:var(--c-primary);background:rgba(0,224,138,.05);}
.faq-sign{
  flex:0 0 auto;
  position:relative;
  width:18px;
  height:18px;
}
.faq-sign::before,
.faq-sign::after{
  content:"";
  position:absolute;
  left:0;top:8px;
  width:18px;height:2px;
  border-radius:2px;
  background:var(--c-primary);
  transition:transform .16s ease,opacity .16s ease;
}
.faq-sign::after{transform:rotate(90deg);}
.faq-item.is-open .faq-sign::after{transform:rotate(0);opacity:0;}
.faq-a{
  display:none;
  padding:0 4px 20px;
  border-top:1px solid var(--c-line);
  padding-top:16px;
  font-size:15px;
  line-height:1.85;
  color:var(--c-text-2);
  max-width:62em;
}
.faq-item.is-open .faq-a{display:block;}

/* ---------- lead form ---------- */
.lead-wrap{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,460px);
  gap:var(--sp-7);
  align-items:start;
}
.lead-copy h2{
  position:relative;
  font-size:clamp(24px,3.2vw,34px);
  font-weight:700;
  padding-left:16px;
  line-height:1.3;
}
.lead-copy h2::before{
  content:"";
  position:absolute;left:0;top:.16em;
  width:4px;height:.9em;border-radius:2px;background:var(--c-primary);
}
.lead-copy p{
  margin-top:var(--sp-4);
  color:var(--c-text-2);
  max-width:36em;
}
.lead-points{margin-top:var(--sp-5);display:flex;flex-direction:column;gap:12px;}
.lead-points li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:15px;
  color:var(--c-text-2);
}
.lead-points .no{
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  font-size:13px;
  font-weight:800;
  color:var(--c-accent);
  padding-top:2px;
}
.form-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  padding:28px;
  box-shadow:var(--sh-1);
}
.field{margin-bottom:var(--sp-4);}
.field label{
  display:block;
  font-size:13px;
  color:var(--c-text-2);
  margin-bottom:8px;
}
.field input,
.field select,
.field textarea{
  width:100%;
  min-height:44px;
  padding:10px 12px;
  background:var(--c-bg);
  border:1px solid var(--c-line);
  border-radius:var(--r-sm);
  color:var(--c-text);
  font-size:15px;
  transition:border-color .16s ease,box-shadow .16s ease;
}
.field textarea{min-height:104px;resize:vertical;line-height:1.7;}
.field input::placeholder,
.field textarea::placeholder{color:var(--c-text-3);}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--c-primary);
  box-shadow:var(--glow);
}
.field.has-error input,
.field.has-error select,
.field.has-error textarea{border-color:var(--c-warn);}
.err-text{display:none;font-size:13px;color:var(--c-warn);margin-top:6px;}
.field.has-error .err-text{display:block;}
.form-privacy{
  display:flex;
  gap:10px;
  align-items:flex-start;
  margin-top:var(--sp-4);
  font-size:12px;
  line-height:1.7;
  color:var(--c-text-3);
}
.form-privacy input[type="checkbox"]{
  appearance:none;
  -webkit-appearance:none;
  flex:0 0 auto;
  width:16px;height:16px;
  margin-top:2px;
  border-radius:4px;
  border:1px solid var(--c-line-strong);
  background:var(--c-bg);
  cursor:pointer;
  position:relative;
  transition:background-color .16s ease,border-color .16s ease;
}
.form-privacy input[type="checkbox"]:checked{background:var(--c-primary);border-color:var(--c-primary);}
.form-privacy input[type="checkbox"]:checked::after{
  content:"";
  position:absolute;
  left:5px;top:1px;
  width:4px;height:9px;
  border:2px solid var(--c-primary-ink);
  border-top:0;border-left:0;
  transform:rotate(42deg);
}
.form-privacy .warn{color:var(--c-warn);font-weight:700;}
.form-actions{margin-top:var(--sp-5);display:flex;justify-content:flex-end;}
.form-actions .btn{width:100%;}
@media(min-width:641px){.form-actions .btn{width:160px;}}
.form-ok{
  display:none;
  margin-top:var(--sp-4);
  padding:12px 14px;
  border-radius:var(--r-sm);
  border:1px solid var(--c-line-strong);
  background:rgba(0,224,138,.08);
  color:var(--c-primary);
  font-size:14px;
}
.form-ok.is-visible{display:block;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--c-bg-deep);
  padding:var(--sp-8) 0 var(--sp-6);
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,#00E08A 0%,rgba(0,224,138,.15) 40%,transparent 75%);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:var(--sp-6);
}
.footer-brand .logo{margin-bottom:var(--sp-4);}
.footer-brand p{
  font-size:14px;
  color:var(--c-text-2);
  max-width:34em;
}
.footer-brand .foot-note{
  margin-top:12px;
  font-size:12px;
  color:var(--c-text-3);
  line-height:1.7;
}
.footer-col h3{
  font-size:14px;
  font-weight:700;
  color:var(--c-text);
  margin-bottom:var(--sp-4);
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a,
.footer-col span{
  font-size:14px;
  color:var(--c-text-2);
}
.footer-col a:hover{color:var(--c-primary);}
.footer-bottom{
  margin-top:var(--sp-7);
  padding-top:var(--sp-5);
  border-top:1px solid var(--c-line);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:13px;
  color:var(--c-text-3);
}

/* ---------- responsive ---------- */
@media(max-width:1023px){
  .nav-links{display:none;}
  .header-actions .btn-ghost{display:none;}
  .nav-toggle{display:flex;}
  .split{grid-template-columns:minmax(0,1fr);gap:var(--sp-5);}
  .split:nth-child(even) .split-media{order:0;}
  .split + .split{margin-top:var(--sp-7);}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .lead-wrap{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .section{padding-block:var(--sp-7);}
}
@media(max-width:767px){
  :root{--nav-h:56px;}
  .logo-text{font-size:16px;}
  .header-actions .btn-primary{display:none;}
  h1{font-size:clamp(26px,7vw,34px);}
  .hero-sub{font-size:15px;}
  .pill{min-height:38px;padding:0 14px;font-size:13px;}
  .split-media img{aspect-ratio:16/10;}
  .mini-points{grid-template-columns:minmax(0,1fr);}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .info-card{padding:22px;}
  .section-head{margin-bottom:var(--sp-6);}
  .form-card{padding:20px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:var(--sp-5);}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media(max-width:520px){
  .breadcrumb{font-size:12px;padding-top:var(--sp-5);}
  .split-body p{font-size:15px;}
  .faq-q{font-size:15px;}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
}