/* roulang page: index */
:root{
  --bg:#070A0F;
  --bg-soft:#0C111A;
  --panel:#151D2A;
  --panel-2:#1A2434;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#F4F7FB;
  --text-2:#A7B3C2;
  --text-3:#6F7C8C;
  --cyan:#36E6C9;
  --purple:#7B61FF;
  --amber:#F5B85B;
  --radius-sm:12px;
  --radius:18px;
  --radius-lg:26px;
  --shadow:0 24px 60px rgba(0,0,0,.45);
  --shadow-sm:0 12px 32px rgba(0,0,0,.35);
  --container:1240px;
  --ease:cubic-bezier(.22,.8,.28,1);
  --font-cn:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"Inter","Noto Sans SC",-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--cyan);text-decoration:none;background:transparent;transition:color .25s var(--ease),opacity .25s var(--ease)}
a:hover{color:#fff}
p{margin:0 0 1rem}
ul,ol{margin:0;padding-left:1.15rem}
button{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0 0 1rem;color:var(--text);font-weight:700;line-height:1.2;letter-spacing:-.01em}
::selection{background:rgba(54,230,201,.28);color:#fff}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--cyan);color:#04140F;padding:10px 18px;z-index:2000;border-radius:0 0 10px 0}
.skip-link:focus{left:0;color:#04140F}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:900;
  background:rgba(7,10,15,.82);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  transition:background .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(54,230,201,.7),rgba(123,97,255,.55),transparent);
}
.site-header.is-scrolled{background:rgba(7,10,15,.96);box-shadow:0 12px 40px rgba(0,0,0,.55)}
.header-inner{display:flex;align-items:center;gap:22px;height:76px}
.brand{display:flex;align-items:center;gap:12px;color:var(--text);flex:0 0 auto}
.brand:hover{color:#fff}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:17px;color:#04140F;
  background:linear-gradient(135deg,var(--cyan),#2BC8E4);
  box-shadow:0 0 22px rgba(54,230,201,.45);
}
.brand-text{font-size:19px;font-weight:800;letter-spacing:.01em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{position:relative;display:block;padding:9px 14px;border-radius:10px;color:var(--text-2);font-size:15px;font-weight:500;white-space:nowrap}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.05)}
.nav-link:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.nav-link.is-active{color:#fff}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--purple));
  box-shadow:0 0 12px rgba(54,230,201,.85);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);
  background:rgba(255,255,255,.04);color:var(--text);cursor:pointer;font-size:17px;
  transition:.25s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:12px;padding:13px 24px;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;text-align:center;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),background .28s var(--ease),border-color .28s var(--ease),color .28s var(--ease);
  background:transparent;color:var(--text);position:relative;overflow:hidden;
}
.btn:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
.btn-primary{background:linear-gradient(135deg,var(--cyan),#22C7E3);color:#04140F;box-shadow:0 12px 30px rgba(54,230,201,.26)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 44px rgba(54,230,201,.4);color:#04140F}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--cyan);background:rgba(54,230,201,.08);color:#fff;transform:translateY(-2px)}
.btn-amber{background:rgba(245,184,91,.14);border-color:rgba(245,184,91,.45);color:var(--amber)}
.btn-amber:hover{background:rgba(245,184,91,.24);color:#FFD79B;transform:translateY(-2px)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-lg{padding:15px 30px;font-size:16px}
.btn-block{width:100%}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:158px 0 96px;min-height:76vh;display:flex;align-items:center;
  background:#070A0F url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(112deg,rgba(7,10,15,.97) 0%,rgba(7,10,15,.9) 40%,rgba(10,15,26,.72) 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(circle at 72% 42%,#000 0%,transparent 72%);
  mask-image:radial-gradient(circle at 72% 42%,#000 0%,transparent 72%);
  opacity:.7;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.06fr .94fr;gap:56px;align-items:center;width:100%}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;padding:7px 15px;border-radius:999px;
  border:1px solid rgba(54,230,201,.32);background:rgba(54,230,201,.08);
  color:var(--cyan);font-size:13px;font-weight:600;letter-spacing:.06em;margin-bottom:22px;
}
.eyebrow i{font-size:12px}
.hero h1{
  font-size:60px;line-height:1.08;font-weight:800;letter-spacing:-.02em;margin-bottom:22px;
}
.hero h1 .hl{
  background:linear-gradient(120deg,var(--cyan),#7CE7FF 45%,var(--purple));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{font-size:18px;color:var(--text-2);line-height:1.85;max-width:600px;margin-bottom:32px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;gap:7px;padding:7px 14px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--text-2);font-size:13.5px;
}
.tag i{color:var(--cyan);font-size:12px}

.hero-panel{
  border-radius:var(--radius-lg);border:1px solid var(--line);background:linear-gradient(180deg,rgba(21,29,42,.96),rgba(13,19,29,.96));
  box-shadow:var(--shadow);padding:28px;position:relative;overflow:hidden;
}
.hero-panel::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--purple),transparent);
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px}
.panel-head h2{font-size:16px;font-weight:700;margin:0;color:var(--text)}
.status-dot{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--cyan)}
.status-dot::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
.panel-field{
  border:1px solid var(--line);border-radius:var(--radius-sm);background:rgba(7,10,15,.6);
  padding:13px 16px;margin-bottom:12px;display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.panel-field span:first-child{font-size:13px;color:var(--text-3)}
.panel-field span:last-child{font-size:14.5px;color:var(--text);font-family:var(--font-num);letter-spacing:.02em}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0 18px}
.chip{
  padding:6px 13px;border-radius:999px;font-size:13px;border:1px solid var(--line);
  background:rgba(255,255,255,.03);color:var(--text-2);
}
.chip.is-on{border-color:rgba(54,230,201,.5);background:rgba(54,230,201,.12);color:var(--cyan)}
.progress{height:6px;border-radius:999px;background:rgba(255,255,255,.07);overflow:hidden;margin-bottom:10px}
.progress i{display:block;height:100%;width:100%;border-radius:999px;background:linear-gradient(90deg,var(--cyan),var(--purple));box-shadow:0 0 14px rgba(54,230,201,.6)}
.panel-note{font-size:13px;color:var(--text-3);margin:0 0 18px}
.panel-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.panel-grid div{border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px;background:rgba(255,255,255,.02)}
.panel-grid strong{display:block;font-family:var(--font-num);font-size:22px;font-weight:800;color:var(--text)}
.panel-grid small{color:var(--text-3);font-size:12.5px}

/* ---------- sections ---------- */
.section{padding:104px 0}
.section--soft{background:linear-gradient(180deg,var(--bg) 0%,var(--bg-soft) 50%,var(--bg) 100%)}
.section-head{max-width:760px;margin-bottom:52px}
.section-head.is-center{margin-left:auto;margin-right:auto;text-align:center}
.section-tag{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--purple);
  text-transform:uppercase;margin-bottom:14px;
}
.section-head h2{font-size:40px;line-height:1.22;font-weight:700;margin-bottom:16px}
.section-head p{color:var(--text-2);font-size:17px;margin:0}

/* pain */
.pain-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.pain-card{
  border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);
  padding:26px 24px;position:relative;overflow:hidden;
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.pain-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:linear-gradient(180deg,var(--purple),transparent)}
.pain-card:hover{transform:translateY(-4px);border-color:rgba(123,97,255,.55);box-shadow:var(--shadow-sm)}
.pain-card i{font-size:20px;color:var(--amber);margin-bottom:14px;display:block}
.pain-card h3{font-size:19px;line-height:1.45;margin-bottom:10px}
.pain-card p{font-size:15px;color:var(--text-2);margin:0 0 14px}
.pain-card a{font-size:14px;font-weight:600}
.pain-card a i{margin:0 0 0 6px;font-size:12px;color:inherit;display:inline}

/* solutions */
.solution-grid{display:grid;grid-template-columns:1.3fr 1fr;grid-template-rows:auto auto;gap:24px}
.sol-card{
  border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--panel);
  padding:30px;display:flex;flex-direction:column;position:relative;overflow:hidden;
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.sol-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--cyan),rgba(54,230,201,0))}
.sol-card:hover{transform:translateY(-4px);border-color:rgba(54,230,201,.5);box-shadow:var(--shadow)}
.sol-card--main{grid-row:span 2;padding:0;overflow:hidden}
.sol-card--main .sol-media{height:260px;overflow:hidden}
.sol-card--main .sol-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.sol-card--main:hover .sol-media img{transform:scale(1.04)}
.sol-card--main .sol-body{padding:32px;display:flex;flex-direction:column;flex:1}
.sol-badge{
  display:inline-flex;align-items:center;gap:7px;align-self:flex-start;
  padding:5px 12px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:rgba(54,230,201,.12);color:var(--cyan);border:1px solid rgba(54,230,201,.32);margin-bottom:16px;
}
.sol-card h3{font-size:24px;margin-bottom:12px}
.sol-card p{color:var(--text-2);font-size:15.5px;margin-bottom:18px}
.sol-list{list-style:none;padding:0;margin:0 0 22px}
.sol-list li{position:relative;padding-left:22px;margin-bottom:9px;font-size:15px;color:var(--text-2)}
.sol-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 10px rgba(54,230,201,.8);
}
.sol-link{margin-top:auto;font-size:14.5px;font-weight:600}
.sol-link i{margin-left:6px;font-size:12px}
.sol-stack{display:grid;gap:24px}

/* stats */
.stats-grid{display:flex;flex-wrap:wrap;gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat-item{
  flex:1 1 25%;min-width:220px;padding:38px 26px;border-right:1px solid var(--line);position:relative;
}
.stat-item:last-child{border-right:0}
.stat-num{font-family:var(--font-num);font-size:46px;font-weight:800;line-height:1;letter-spacing:-.02em;color:var(--text);display:flex;align-items:baseline;gap:4px}
.stat-num em{font-style:normal;font-size:20px;color:var(--cyan);font-weight:700}
.stat-item p{margin:12px 0 0;font-size:14.5px;color:var(--text-2)}
.stat-item::after{content:"";position:absolute;left:26px;bottom:0;width:44px;height:2px;background:linear-gradient(90deg,var(--cyan),transparent)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative}
.step{
  border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(180deg,rgba(21,29,42,.9),rgba(13,19,29,.9));
  padding:26px 22px;position:relative;
}
.step-num{
  font-family:var(--font-num);font-size:14px;font-weight:700;color:#04140F;
  width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--cyan),#2BC8E4);margin-bottom:16px;
}
.step h3{font-size:18.5px;margin-bottom:10px}
.step p{font-size:14.8px;color:var(--text-2);margin:0}

/* posts */
.post-grid{margin-top:8px}
.post-card{
  height:100%;display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--panel);overflow:hidden;
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(54,230,201,.5);box-shadow:var(--shadow-sm)}
.post-cover{display:block;aspect-ratio:16/10;overflow:hidden;background:#0d131d}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.post-card:hover .post-cover img{transform:scale(1.05)}
.post-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--text-3);margin-bottom:12px}
.post-meta .cat{color:var(--cyan);border:1px solid rgba(54,230,201,.3);background:rgba(54,230,201,.08);padding:2px 10px;border-radius:999px}
.post-card h3{font-size:18px;line-height:1.5;margin-bottom:10px}
.post-card h3 a{color:var(--text)}
.post-card h3 a:hover{color:var(--cyan)}
.post-card p{font-size:14.8px;color:var(--text-2);margin:0 0 18px}
.post-more{margin-top:auto;font-size:14px;font-weight:600}
.post-more i{margin-left:6px;font-size:12px}
.empty-state{
  border:1px dashed var(--line-strong);border-radius:var(--radius);padding:52px 26px;text-align:center;background:rgba(255,255,255,.02);
}
.empty-state i{font-size:26px;color:var(--cyan);margin-bottom:14px;display:block}
.empty-state p{color:var(--text-2);margin:0 0 16px}
.empty-state a{font-weight:600}

/* faq */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-accordion{background:transparent;border:0;list-style:none;margin:0;padding:0}
.faq-accordion .accordion-item{
  border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);
  margin-bottom:14px;overflow:hidden;transition:border-color .3s var(--ease),background .3s var(--ease);
}
.faq-accordion .accordion-item.is-active{border-color:rgba(54,230,201,.45);background:var(--panel-2)}
.faq-accordion .accordion-title{
  display:block;padding:20px 62px 20px 26px;font-size:17px;font-weight:600;color:var(--text);
  border:0;background:transparent;position:relative;line-height:1.55;
}
.faq-accordion .accordion-title:hover{color:#fff}
.faq-accordion .accordion-title::before{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;line-height:24px;text-align:center;border-radius:50%;
  border:1px solid var(--line-strong);color:var(--cyan);font-size:17px;font-weight:600;background:rgba(255,255,255,.03);
}
.faq-accordion .accordion-item.is-active .accordion-title::before{
  content:"–";border-color:var(--cyan);background:rgba(54,230,201,.14);
}
.faq-accordion .accordion-content{
  border:0;background:transparent;color:var(--text-2);padding:0 26px 22px 26px;font-size:15.5px;line-height:1.85;
}
.faq-accordion .accordion-content p:last-child{margin-bottom:0}

/* cta band */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  border:1px solid var(--line);background:linear-gradient(120deg,rgba(21,29,42,.98),rgba(11,16,25,.98));
  padding:56px 48px;display:grid;grid-template-columns:1.4fr .6fr;gap:32px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.5;
  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:44px 44px;
  -webkit-mask-image:radial-gradient(circle at 20% 30%,#000,transparent 70%);
  mask-image:radial-gradient(circle at 20% 30%,#000,transparent 70%);
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{font-size:34px;margin-bottom:12px}
.cta-band p{color:var(--text-2);margin:0;max-width:620px}
.cta-actions{display:flex;flex-direction:column;gap:12px}
.privacy-note{
  margin-top:22px;font-size:13px;color:var(--text-3);display:flex;align-items:flex-start;gap:10px;
}
.privacy-note i{color:var(--cyan);margin-top:5px}

/* modal */
.modal{position:fixed;inset:0;z-index:1200;display:none}
.modal.is-open{display:block}
.modal-overlay{position:absolute;inset:0;background:rgba(3,5,9,.78);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);animation:fadeIn .3s var(--ease)}
.modal-dialog{
  position:relative;z-index:2;width:100%;max-width:600px;margin:6vh auto;max-height:88vh;overflow-y:auto;
  background:linear-gradient(180deg,rgba(23,31,45,.99),rgba(13,19,29,.99));
  border:1px solid var(--line-strong);border-radius:var(--radius-lg);padding:36px;box-shadow:var(--shadow);
  animation:popIn .32s var(--ease);
}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes popIn{from{opacity:0;transform:translateY(16px) scale(.97)}to{opacity:1;transform:none}}
.modal-close{
  position:absolute;right:18px;top:18px;width:38px;height:38px;border-radius:10px;cursor:pointer;
  border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--text-2);
  transition:.25s var(--ease);
}
.modal-close:hover{border-color:var(--cyan);color:var(--cyan)}
.modal-dialog h2{font-size:24px;margin-bottom:10px}
.modal-dialog > p{color:var(--text-2);font-size:15px;margin-bottom:22px}
.lead-form label{display:block;font-size:14px;color:var(--text-2);margin-bottom:8px;font-weight:500}
.lead-form input[type="text"],.lead-form input[type="tel"],.lead-form select,.lead-form textarea{
  width:100%;padding:13px 15px;border-radius:var(--radius-sm);border:1px solid var(--line);
  background:rgba(7,10,15,.75);color:var(--text);font-size:15px;font-family:inherit;margin-bottom:16px;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.lead-form input::placeholder,.lead-form textarea::placeholder{color:var(--text-3)}
.lead-form input:focus,.lead-form select:focus,.lead-form textarea:focus{
  outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(54,230,201,.16);
}
.lead-form textarea{min-height:96px;resize:vertical}
.lead-form select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-2) 50%),linear-gradient(135deg,var(--text-2) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.check{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--text-2);margin:2px 0 20px;line-height:1.7}
.check input{margin-top:5px;width:16px;height:16px;accent-color:var(--cyan);flex:0 0 auto}
.form-note{font-size:12.5px;color:var(--text-3);margin:14px 0 0}
.form-success{
  display:none;margin-top:16px;padding:14px 16px;border-radius:var(--radius-sm);
  border:1px solid rgba(54,230,201,.45);background:rgba(54,230,201,.1);color:var(--cyan);font-size:14.5px;
}
.form-success.is-visible{display:block}

/* footer */
.site-footer{border-top:1px solid var(--line);background:#05080D;position:relative;padding-top:0}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(54,230,201,.7),rgba(123,97,255,.5),transparent);
}
.footer-top{padding:64px 0 40px;display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{color:var(--text-2);font-size:14.6px;max-width:330px}
.footer-col h4{font-size:15px;color:var(--text);margin-bottom:16px;font-weight:700}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin-bottom:11px}
.footer-col a{color:var(--text-2);font-size:14.6px}
.footer-col a:hover{color:var(--cyan)}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;display:flex;flex-wrap:wrap;gap:14px;
  align-items:center;justify-content:space-between;font-size:13.5px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--cyan)}
.back-top{
  display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:999px;
  padding:8px 16px;color:var(--text-2);font-size:13px;background:rgba(255,255,255,.03);cursor:pointer;
}
.back-top:hover{border-color:var(--cyan);color:var(--cyan)}

/* drawer */
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:308px;max-width:88vw;z-index:1300;
  background:#0A0F17;border-left:1px solid var(--line-strong);padding:22px;
  transform:translateX(102%);transition:transform .34s var(--ease);
  display:flex;flex-direction:column;overflow-y:auto;
}
.nav-drawer.is-open{transform:none}
.drawer-overlay{position:fixed;inset:0;background:rgba(3,5,9,.7);z-index:1290;opacity:0;visibility:hidden;transition:.3s var(--ease)}
.drawer-overlay.is-open{opacity:1;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:22px}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:transparent;color:var(--text-2);cursor:pointer}
.drawer-close:hover{border-color:var(--cyan);color:var(--cyan)}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:auto}
.drawer-nav a{padding:13px 14px;border-radius:12px;color:var(--text-2);font-size:15.5px;font-weight:500}
.drawer-nav a:hover{background:rgba(255,255,255,.05);color:#fff}
.drawer-nav a.is-active{color:#fff;background:rgba(54,230,201,.1);border-left:2px solid var(--cyan)}
.drawer-foot{padding-top:22px;border-top:1px solid var(--line);margin-top:22px}
.drawer-foot .btn{margin-bottom:14px}
.drawer-privacy{font-size:13px;color:var(--text-3)}

/* reveal */
.js .reveal{opacity:0;transform:translateY(24px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.js .reveal.is-visible{opacity:1;transform:none}

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

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .hero h1{font-size:48px}
  .hero-inner{grid-template-columns:1fr;gap:44px}
  .pain-grid{grid-template-columns:repeat(2,1fr)}
  .solution-grid{grid-template-columns:1fr}
  .sol-card--main{grid-row:auto}
  .steps{grid-template-columns:repeat(2,1fr)}
  .stat-item{flex:1 1 50%;border-right:1px solid var(--line)}
  .stat-item:nth-child(2){border-right:0}
  .cta-band{grid-template-columns:1fr;padding:44px 32px}
  .footer-top{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:880px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .header-actions .btn{display:none}
  .header-inner{height:70px}
  .section{padding:76px 0}
  .section-head h2{font-size:31px}
  .hero{padding:126px 0 76px;min-height:auto}
  .hero h1{font-size:40px}
  .hero-lead{font-size:16.5px}
  .stat-num{font-size:38px}
}
@media (max-width:640px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:62px 0}
  .section-head{margin-bottom:36px}
  .section-head h2{font-size:27px}
  .hero{padding:112px 0 64px}
  .hero h1{font-size:33px;line-height:1.2}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .pain-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .stat-item{flex:1 1 100%;border-right:0;border-bottom:1px solid var(--line);padding:28px 20px}
  .stat-item:last-child{border-bottom:0}
  .cta-band{padding:34px 22px}
  .cta-band h2{font-size:25px}
  .cta-actions .btn{width:100%}
  .modal-dialog{margin:3vh auto;padding:26px 20px;max-height:94vh;border-radius:20px}
  .footer-top{grid-template-columns:1fr;padding:46px 0 30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .hero-panel{padding:22px}
  .panel-grid{grid-template-columns:1fr 1fr}
}

/* roulang page: category1 */
:root{
  --cyan:#36E6C9;
  --cyan-soft:rgba(54,230,201,.14);
  --violet:#7B61FF;
  --violet-soft:rgba(123,97,255,.16);
  --amber:#F5B85B;
  --amber-soft:rgba(245,184,91,.14);
  --bg:#070A0F;
  --graphite:#111722;
  --panel:#151D2A;
  --panel-2:#1A2434;
  --text:#F4F7FB;
  --muted:#A7B3C2;
  --dim:#6F7C8C;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --radius:18px;
  --radius-sm:12px;
  --radius-xs:10px;
  --shadow:0 24px 60px rgba(0,0,0,.45);
  --shadow-hover:0 30px 70px rgba(0,0,0,.6);
  --container:1240px;
  --font:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","Noto Sans SC",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:17px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--cyan);text-decoration:none;transition:color .22s ease,opacity .22s ease}
a:hover{color:#7ff2dd}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{list-style:none;padding:0}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}

.grid-container{max-width:var(--container);margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,10,15,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{background:rgba(7,10,15,.95);box-shadow:0 14px 40px rgba(0,0,0,.5)}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(54,230,201,.55),rgba(123,97,255,.5),transparent);
  pointer-events:none;
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:76px;
}
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--text);font-weight:800;letter-spacing:-.01em}
.brand:hover{color:var(--text)}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  font-size:18px;font-weight:800;color:#04120F;
  background:linear-gradient(135deg,var(--cyan),#57f0d8 60%,var(--violet));
  box-shadow:0 0 0 1px rgba(54,230,201,.35),0 8px 26px rgba(54,230,201,.28);
}
.brand-text{font-size:19px;white-space:nowrap}
.nav-panel{display:flex;align-items:center;gap:20px;flex:1;justify-content:flex-end}
.main-nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.nav-link{
  position:relative;display:inline-block;padding:9px 14px;border-radius:999px;
  color:var(--muted);font-size:15px;font-weight:500;
  transition:color .2s ease,background .2s ease,box-shadow .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-link.is-active{
  color:var(--cyan);
  background:var(--cyan-soft);
  box-shadow:inset 0 0 0 1px rgba(54,230,201,.28),0 0 20px rgba(54,230,201,.14);
}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:16px;height:2px;border-radius:2px;background:var(--cyan);
  box-shadow:0 0 10px rgba(54,230,201,.9);
}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-strong);color:var(--text);
  background:rgba(255,255,255,.04);font-size:18px;
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 26px;border-radius:999px;font-weight:700;font-size:15.5px;
  border:1px solid transparent;letter-spacing:.01em;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  position:relative;overflow:hidden;
}
.btn i{font-size:14px}
.btn-primary{
  background:linear-gradient(120deg,var(--cyan),#48f0d4 55%,#2fd6bd);
  color:#04120F;
  box-shadow:0 14px 34px rgba(54,230,201,.26);
}
.btn-primary:hover{color:#04120F;transform:translateY(-2px);box-shadow:0 20px 44px rgba(54,230,201,.4)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:rgba(255,255,255,.03);color:var(--text);border-color:var(--line-strong);
}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);background:var(--cyan-soft);transform:translateY(-2px)}
.btn-violet{
  background:linear-gradient(120deg,var(--violet),#9a86ff);
  color:#0B0718;box-shadow:0 14px 34px rgba(123,97,255,.28);
}
.btn-violet:hover{color:#0B0718;transform:translateY(-2px);box-shadow:0 20px 44px rgba(123,97,255,.42)}
.btn-sm{padding:10px 20px;font-size:14.5px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

/* ============ 面包屑 ============ */
.breadcrumb-bar{
  background:var(--graphite);
  border-bottom:1px solid var(--line);
  padding:18px 0;
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:var(--dim)}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--cyan)}
.crumbs .sep{color:rgba(255,255,255,.2)}
.crumbs .current{color:var(--text);font-weight:600}

/* ============ Hero ============ */
.hero{position:relative;padding:88px 0 96px;overflow:hidden;border-bottom:1px solid var(--line)}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.28;filter:saturate(.9);
}
.hero-overlay{
  position:absolute;inset:0;
  background:
    radial-gradient(900px 520px at 82% 12%,rgba(123,97,255,.22),transparent 62%),
    radial-gradient(760px 480px at 6% 84%,rgba(54,230,201,.18),transparent 60%),
    linear-gradient(180deg,rgba(7,10,15,.86),rgba(7,10,15,.96) 78%,var(--bg));
}
.hero-grid{
  position:absolute;inset: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;
  mask-image:radial-gradient(circle at 50% 40%,#000 12%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 40%,#000 12%,transparent 78%);
}
.hero-inner{position:relative;z-index:2}
.hero-copy{max-width:640px}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  padding:7px 15px;border-radius:999px;
  border:1px solid rgba(54,230,201,.3);background:var(--cyan-soft);
  color:var(--cyan);font-size:13.5px;font-weight:600;letter-spacing:.03em;
  margin-bottom:22px;
}
.hero h1{
  font-size:clamp(36px,4.6vw,60px);
  line-height:1.1;font-weight:800;letter-spacing:-.02em;
  margin-bottom:22px;
}
.hero h1 .hl{
  background:linear-gradient(100deg,var(--cyan),var(--violet));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:18px;color:var(--muted);max-width:600px;margin-bottom:28px}
.hero-points{display:grid;gap:12px;margin-bottom:32px}
.hero-points li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:var(--muted)}
.hero-points i{color:var(--cyan);margin-top:6px;font-size:13px}
.hero-points strong{color:var(--text);font-weight:700}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* Hero 右侧视觉卡 */
.hero-visual{position:relative}
.visual-card{
  position:relative;border-radius:22px;overflow:hidden;
  border:1px solid var(--line-strong);
  background:linear-gradient(180deg,var(--panel),var(--graphite));
  box-shadow:var(--shadow);
}
.visual-card img{width:100%;height:300px;object-fit:cover;opacity:.82}
.visual-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,10,15,.15),rgba(7,10,15,.85));
}
.status-panel{
  position:relative;z-index:2;margin-top:-78px;
  padding:0 22px 22px;
}
.status-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 16px;border-radius:14px;
  background:rgba(7,10,15,.78);
  border:1px solid rgba(54,230,201,.28);
  backdrop-filter:blur(8px);
  margin-bottom:12px;
}
.status-head span{font-size:14px;color:var(--muted)}
.status-head strong{font-size:15px;color:var(--cyan)}
.status-list{display:grid;gap:10px}
.status-list li{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 16px;border-radius:12px;
  background:rgba(255,255,255,.035);border:1px solid var(--line);
  font-size:14px;color:var(--muted);
}
.status-list li i{color:var(--cyan);margin-right:8px}
.tag-ok{
  font-size:12.5px;font-weight:700;color:var(--cyan);
  background:var(--cyan-soft);border:1px solid rgba(54,230,201,.3);
  padding:3px 10px;border-radius:999px;white-space:nowrap;
}
.tag-warn{
  font-size:12.5px;font-weight:700;color:var(--amber);
  background:var(--amber-soft);border:1px solid rgba(245,184,91,.3);
  padding:3px 10px;border-radius:999px;white-space:nowrap;
}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-alt{background:var(--graphite)}
.section-head{max-width:760px;margin-bottom:52px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--cyan);margin-bottom:16px;
}
.section-label::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--cyan);box-shadow:0 0 10px rgba(54,230,201,.8)}
.section-head h2{font-size:clamp(28px,3.4vw,42px);line-height:1.2;font-weight:800;letter-spacing:-.02em;margin-bottom:16px}
.section-head p{color:var(--muted);font-size:17px}

/* ============ 指标条 ============ */
.metrics{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,var(--graphite),var(--bg));
}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.metric{
  padding:44px 28px;border-right:1px solid var(--line);position:relative;
}
.metric:last-child{border-right:0}
.metric::before{
  content:"";position:absolute;left:28px;top:32px;width:26px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
  box-shadow:0 0 12px rgba(54,230,201,.6);
}
.metric-num{
  font-family:var(--font-num);font-size:46px;font-weight:800;line-height:1;
  letter-spacing:-.03em;color:var(--text);margin:26px 0 10px;display:flex;align-items:baseline;gap:6px;
}
.metric-num .unit{font-size:16px;font-weight:700;color:var(--cyan);letter-spacing:0}
.metric p{font-size:14.5px;color:var(--dim);line-height:1.7}

/* ============ 卡片 ============ */
.card{
  position:relative;background:var(--panel);
  border:1px solid var(--line);border-radius:var(--radius);
  padding:30px;box-shadow:var(--shadow);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
  height:100%;
}
.card::before{
  content:"";position:absolute;left:0;top:26px;width:2px;height:44px;border-radius:2px;
  background:linear-gradient(180deg,var(--cyan),var(--violet));
  box-shadow:0 0 14px rgba(54,230,201,.5);
}
.card:hover{transform:translateY(-4px);border-color:rgba(54,230,201,.4);box-shadow:var(--shadow-hover),0 0 40px rgba(54,230,201,.08)}
.card h3{font-size:21px;font-weight:700;margin-bottom:12px}
.card p{color:var(--muted);font-size:15.5px}
.card-icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:var(--violet-soft);color:#b3a4ff;font-size:18px;margin-bottom:20px;
  border:1px solid rgba(123,97,255,.3);
}

/* ============ 方案列表（图文交替） ============ */
.solution{
  display:grid;grid-template-columns:1fr 1fr;gap:0;
  background:var(--panel);border:1px solid var(--line);border-radius:22px;
  overflow:hidden;box-shadow:var(--shadow);margin-bottom:28px;
}
.solution:last-child{margin-bottom:0}
.solution-media{position:relative;min-height:280px;overflow:hidden}
.solution-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;opacity:.9;transition:transform .5s ease}
.solution:hover .solution-media img{transform:scale(1.04)}
.solution-media::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(7,10,15,.55),rgba(7,10,15,.1))}
.solution-body{padding:42px 44px}
.solution-body .step{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-num);font-size:13px;font-weight:700;color:var(--amber);
  letter-spacing:.14em;margin-bottom:16px;
}
.solution-body h3{font-size:25px;font-weight:700;margin-bottom:14px;letter-spacing:-.01em}
.solution-body > p{color:var(--muted);font-size:16px;margin-bottom:22px}
.solution-list{display:grid;gap:12px}
.solution-list li{display:flex;gap:11px;align-items:flex-start;font-size:15.5px;color:var(--muted)}
.solution-list li i{color:var(--cyan);margin-top:7px;font-size:12px}
.solution-reverse .solution-media{order:2}
.solution-reverse .solution-body{order:1}

/* ============ 快查卡片 ============ */
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.quick-card{
  background:linear-gradient(180deg,var(--panel-2),var(--panel));
  border:1px solid var(--line);border-radius:var(--radius);padding:30px;
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
  height:100%;
}
.quick-card:hover{transform:translateY(-4px);border-color:rgba(245,184,91,.42);box-shadow:var(--shadow-hover)}
.quick-card .badge{
  display:inline-block;font-size:12.5px;font-weight:700;padding:4px 12px;border-radius:999px;
  background:var(--amber-soft);color:var(--amber);border:1px solid rgba(245,184,91,.32);
  margin-bottom:18px;
}
.quick-card h3{font-size:20px;font-weight:700;margin-bottom:12px}
.quick-card p{color:var(--muted);font-size:15.5px;margin-bottom:18px}
.quick-card .link-more{font-size:14.5px;font-weight:700;display:inline-flex;align-items:center;gap:8px}
.quick-card .link-more i{transition:transform .22s ease}
.quick-card:hover .link-more i{transform:translateX(4px)}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:14px;max-width:920px;margin:0 auto}
.acc-item{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-sm);
  overflow:hidden;transition:border-color .25s ease,background .25s ease;
}
.acc-item.is-open{border-color:rgba(54,230,201,.4);background:var(--panel-2)}
.acc-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 26px;text-align:left;color:var(--text);font-size:17px;font-weight:600;
  position:relative;
}
.acc-q::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:26px;border-radius:2px;background:var(--cyan);
  box-shadow:0 0 12px rgba(54,230,201,.7);
}
.acc-q:hover{color:var(--cyan)}
.acc-q i{color:var(--dim);transition:transform .28s ease,color .28s ease;font-size:15px}
.acc-item.is-open .acc-q i{transform:rotate(45deg);color:var(--cyan)}
.acc-a{display:none;padding:0 26px 24px 26px}
.acc-item.is-open .acc-a{display:block}
.acc-a p{color:var(--muted);font-size:15.5px;line-height:1.85}

/* ============ CTA + 表单 ============ */
.cta-wrap{position:relative;overflow:hidden;border-top:1px solid var(--line)}
.cta-band{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;
  position:relative;z-index:2;
}
.cta-copy h2{font-size:clamp(28px,3.2vw,40px);font-weight:800;letter-spacing:-.02em;line-height:1.22;margin-bottom:18px}
.cta-copy p{color:var(--muted);font-size:17px;margin-bottom:26px}
.cta-points{display:grid;gap:14px;margin-bottom:30px}
.cta-points li{display:flex;gap:12px;align-items:flex-start;color:var(--muted);font-size:15.5px}
.cta-points i{color:var(--cyan);margin-top:7px;font-size:12px}
.contact-line{display:flex;flex-wrap:wrap;gap:22px;font-size:14.5px;color:var(--dim)}
.contact-line span i{color:var(--cyan);margin-right:8px}

.lead-card{
  background:linear-gradient(180deg,var(--panel),var(--graphite));
  border:1px solid var(--line-strong);border-radius:22px;padding:36px;
  box-shadow:var(--shadow);position:relative;
}
.lead-card::before{
  content:"";position:absolute;left:36px;right:36px;top:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--violet),transparent);
  box-shadow:0 0 18px rgba(54,230,201,.55);
}
.lead-card h3{font-size:22px;font-weight:700;margin-bottom:8px}
.lead-card > p{color:var(--dim);font-size:14.5px;margin-bottom:24px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--muted);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;padding:13px 16px;border-radius:var(--radius-xs);
  background:rgba(255,255,255,.035);border:1px solid var(--line-strong);
  color:var(--text);font-size:15.5px;line-height:1.6;
  transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
  appearance:none;-webkit-appearance:none;
}
.field textarea{resize:vertical;min-height:110px}
.field input::placeholder,.field textarea::placeholder{color:var(--dim)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--cyan);background:rgba(54,230,201,.06);
  box-shadow:0 0 0 3px rgba(54,230,201,.16);
}
.field select{
  background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);
  background-position:calc(100% - 21px) calc(50% - 2px),calc(100% - 15px) calc(50% - 2px);
  background-size:6px 6px,6px 6px;background-repeat:no-repeat;
}
.field select option{background:var(--panel);color:var(--text)}
.check{display:flex;gap:11px;align-items:flex-start;font-size:13.5px;color:var(--dim);margin:6px 0 20px;line-height:1.7}
.check input{
  width:18px;height:18px;margin-top:3px;flex:0 0 auto;accent-color:var(--cyan);
  border-radius:4px;cursor:pointer;
}
.check a{text-decoration:underline}
.form-note{font-size:13.5px;margin-top:14px;color:var(--cyan);min-height:20px}
.form-note.is-error{color:var(--amber)}

/* ============ 隐私说明 ============ */
.privacy-strip{
  background:var(--graphite);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:34px 0;
}
.privacy-inner{display:flex;gap:20px;align-items:flex-start;flex-wrap:wrap}
.privacy-inner i{color:var(--cyan);font-size:20px;margin-top:5px}
.privacy-inner p{color:var(--dim);font-size:14.5px;max-width:960px}
.privacy-inner a{text-decoration:underline}

/* ============ 页脚 ============ */
.site-footer{background:#05080C;border-top:1px solid var(--line);position:relative;padding-top:72px}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(54,230,201,.6),rgba(123,97,255,.5),transparent);
}
.footer-top{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:44px;
  padding-bottom:56px;
}
.footer-brand .brand{margin-bottom:20px}
.footer-brand p{color:var(--dim);font-size:14.5px;max-width:360px}
.footer-col h4{font-size:15px;font-weight:700;color:var(--text);margin-bottom:20px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:12px}
.footer-col a{color:var(--muted);font-size:14.5px}
.footer-col a:hover{color:var(--cyan)}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  color:var(--dim);font-size:13.5px;
}
.back-top{
  display:inline-flex;align-items:center;gap:9px;
  padding:10px 18px;border-radius:999px;font-size:13.5px;font-weight:600;
  border:1px solid var(--line-strong);color:var(--muted);background:rgba(255,255,255,.03);
  transition:all .22s ease;
}
.back-top:hover{border-color:var(--cyan);color:var(--cyan);background:var(--cyan-soft)}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.reveal.is-visible{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media screen and (max-width:1200px){
  .hero h1{font-size:clamp(34px,4.4vw,52px)}
  .solution-body{padding:36px}
}
@media screen and (max-width:1024px){
  .nav-toggle{display:inline-grid;place-items:center}
  .nav-panel{
    position:absolute;top:calc(100% + 1px);right:16px;left:16px;
    flex-direction:column;align-items:stretch;gap:14px;
    background:rgba(11,16,24,.98);
    border:1px solid var(--line-strong);border-radius:18px;
    padding:20px;box-shadow:0 30px 70px rgba(0,0,0,.65);
    display:none;
  }
  .nav-panel.is-open{display:flex}
  .main-nav{flex-direction:column;align-items:stretch;gap:6px}
  .nav-link{padding:13px 16px;border-radius:12px;font-size:16px}
  .nav-link.is-active::after{left:16px;transform:none}
  .nav-cta{justify-content:stretch}
  .nav-cta .btn{width:100%}
  .metrics-grid{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(2){border-right:0}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line)}
  .quick-grid{grid-template-columns:1fr 1fr}
  .cta-band{grid-template-columns:1fr;gap:44px}
  .footer-top{grid-template-columns:1fr 1fr;gap:36px}
}
@media screen and (max-width:768px){
  body{font-size:16px}
  .section{padding:64px 0}
  .section-tight{padding:56px 0}
  .hero{padding:56px 0 68px}
  .hero h1{font-size:clamp(30px,7.4vw,40px)}
  .hero-sub{font-size:16.5px}
  .hero-actions .btn{width:100%}
  .visual-card img{height:220px}
  .status-panel{margin-top:-64px;padding:0 16px 18px}
  .solution{grid-template-columns:1fr}
  .solution-reverse .solution-media{order:1}
  .solution-reverse .solution-body{order:2}
  .solution-media{min-height:200px}
  .solution-media img{position:relative;height:200px}
  .solution-body{padding:28px 24px}
  .quick-grid{grid-template-columns:1fr}
  .metrics-grid{grid-template-columns:1fr}
  .metric{border-right:0;border-bottom:1px solid var(--line);padding:32px 24px}
  .metric:last-child{border-bottom:0}
  .metric::before{left:24px;top:26px}
  .metric-num{font-size:38px;margin:22px 0 8px}
  .lead-card{padding:26px 22px}
  .lead-card::before{left:22px;right:22px}
  .acc-q{padding:18px 20px;font-size:16px}
  .acc-a{padding:0 20px 20px 20px}
  .footer-top{grid-template-columns:1fr;gap:32px;padding-bottom:40px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .card{padding:24px}
}
@media screen and (max-width:520px){
  .grid-container,.container{padding-left:20px;padding-right:20px}
  .brand-text{font-size:17px}
  .hero h1{font-size:30px}
  .section-head h2{font-size:26px}
  .btn{padding:13px 22px;font-size:15px}
  .hero-points li{font-size:15px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --bg:#070A0F;
  --bg-soft:#0C121B;
  --panel:#151D2A;
  --panel-2:#1B2534;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#F4F7FB;
  --text-2:#A7B3C2;
  --text-3:#6F7C8C;
  --primary:#36E6C9;
  --primary-dim:rgba(54,230,201,.14);
  --violet:#7B61FF;
  --violet-dim:rgba(123,97,255,.16);
  --amber:#F5B85B;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 24px 60px rgba(0,0,0,.45);
  --container:1240px;
  --font-base:"Noto Sans SC","Inter","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","Noto Sans SC",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:110px}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-base);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden}
img{max-width:100%;height:auto;border:0;display:block}
a{color:var(--primary);text-decoration:none;transition:color .22s ease,opacity .22s ease}
a:hover{color:#7ff3e0}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer}
h1,h2,h3,h4,h5,h6{margin:0;font-family:var(--font-base);color:var(--text);line-height:1.3;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
::selection{background:rgba(54,230,201,.28);color:#fff}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.section{padding:88px 0}
.section-sm{padding:64px 0}
.section-head{margin-bottom:44px;max-width:760px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--primary);font-weight:600;margin-bottom:14px;
}
.section-head .eyebrow::before{
  content:"";width:22px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--violet));
}
.section-head h2{font-size:38px;font-weight:700;letter-spacing:-.015em}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16.5px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  text-decoration:none;cursor:pointer;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
  white-space:nowrap;
}
.btn i{font-size:14px}
.btn-primary{
  background:linear-gradient(135deg,#3EF0D2 0%,#25C7AC 100%);
  color:#041210;
  box-shadow:0 12px 32px rgba(54,230,201,.26);
}
.btn-primary:hover{color:#041210;transform:translateY(-2px);box-shadow:0 18px 44px rgba(54,230,201,.42)}
.btn-ghost{
  background:rgba(54,230,201,.05);
  border-color:rgba(54,230,201,.42);
  color:var(--primary);
}
.btn-ghost:hover{background:rgba(54,230,201,.16);color:#9BF7E6;transform:translateY(-2px)}
.btn-quiet{
  background:transparent;border-color:var(--line-strong);color:var(--text-2);
}
.btn-quiet:hover{border-color:var(--primary);color:var(--primary);background:rgba(54,230,201,.06)}
.btn-sm{padding:11px 20px;font-size:14px}
.btn-block{width:100%}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:3px}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12.5px;font-weight:500;
  background:var(--primary-dim);color:var(--primary);border:1px solid rgba(54,230,201,.28);
  line-height:1.5;
}
.tag-violet{background:var(--violet-dim);color:#B3A5FF;border-color:rgba(123,97,255,.34)}
.tag-amber{background:rgba(245,184,91,.14);color:var(--amber);border-color:rgba(245,184,91,.32)}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,10,15,.82);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,rgba(54,230,201,0) 0%,rgba(54,230,201,.75) 22%,rgba(123,97,255,.7) 62%,rgba(54,230,201,0) 100%);
  opacity:.85;
}
.site-header.is-scrolled{background:rgba(7,10,15,.95);box-shadow:0 18px 40px rgba(0,0,0,.5)}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:76px;
}
.brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;color:#04120F;
  background:linear-gradient(135deg,#3EF0D2,#7B61FF);
  box-shadow:0 8px 22px rgba(54,230,201,.3);
}
.brand-text{font-size:18px;font-weight:700;color:var(--text);letter-spacing:.01em}
.brand:hover .brand-text{color:var(--primary)}
.main-nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.nav-link{
  position:relative;
  padding:10px 15px;border-radius:10px;
  font-size:14.5px;font-weight:500;color:var(--text-2);
  transition:color .22s ease,background .22s ease;
}
.nav-link::after{
  content:"";position:absolute;left:15px;right:15px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--violet));
  transform:scaleX(0);transform-origin:left;transition:transform .28s ease;
  box-shadow:0 0 12px rgba(54,230,201,.6);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--primary);background:rgba(54,230,201,.08)}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line-strong);background:rgba(255,255,255,.03);
  color:var(--text);align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary)}

/* ---------- Mobile drawer ---------- */
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);
  background:linear-gradient(180deg,#0C121B,#070A0F);
  border-left:1px solid var(--line);z-index:90;
  transform:translateX(102%);transition:transform .32s ease;
  padding:24px 22px 32px;overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line-strong);
  background:transparent;color:var(--text-2);display:inline-flex;align-items:center;justify-content:center;
}
.drawer-close:hover{color:var(--primary);border-color:var(--primary)}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:26px}
.drawer-nav a{
  padding:13px 14px;border-radius:12px;font-size:15px;color:var(--text-2);
  border:1px solid transparent;
}
.drawer-nav a:hover,.drawer-nav a.is-active{
  color:var(--primary);background:rgba(54,230,201,.08);border-color:rgba(54,230,201,.24);
}
.drawer-foot{border-top:1px solid var(--line);padding-top:20px;display:flex;flex-direction:column;gap:10px}
.drawer-foot a{font-size:13.5px;color:var(--text-3)}
.drawer-foot a:hover{color:var(--primary)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,6,10,.68);backdrop-filter:blur(3px);
  z-index:80;opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ---------- Page banner ---------- */
.page-banner{
  position:relative;overflow:hidden;
  padding:56px 0 60px;
  background-image:linear-gradient(180deg,rgba(7,10,15,.9) 0%,rgba(7,10,15,.96) 60%,var(--bg) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 20% 30%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 20% 30%,#000 0%,transparent 78%);
  pointer-events:none;
}
.page-banner .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13.5px;color:var(--text-3);margin-bottom:22px;
}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--text-3);opacity:.7}
.breadcrumb .current{color:var(--text-3);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-kicker{
  display:inline-flex;align-items:center;gap:9px;
  font-size:13px;letter-spacing:.14em;color:var(--primary);font-weight:600;margin-bottom:16px;
}
.article-kicker::before{content:"";width:24px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--primary),var(--violet))}
.page-banner h1{
  font-size:44px;line-height:1.18;font-weight:800;letter-spacing:-.02em;
  max-width:900px;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px 20px;
  margin-top:22px;font-size:13.5px;color:var(--text-3);
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px}
.article-meta .meta-item i{color:var(--primary);font-size:12.5px;opacity:.85}
.article-meta .divider{width:1px;height:14px;background:var(--line-strong)}

/* ---------- Article layout ---------- */
.article-wrap{padding:64px 0 96px}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:56px;
  align-items:start;
}
.article-main{max-width:820px;min-width:0}
.article-cover{
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow);margin-bottom:40px;position:relative;
}
.article-cover img{width:100%;display:block;aspect-ratio:16/8;object-fit:cover}
.article-cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,10,15,0) 45%,rgba(7,10,15,.6) 100%);
}

.post-body{font-size:17px;line-height:1.92;color:#D8E1EC}
.post-body > *:first-child{margin-top:0}
.post-body p{margin:0 0 22px}
.post-body h2{
  position:relative;font-size:28px;font-weight:700;line-height:1.38;
  margin:52px 0 20px;padding-left:18px;letter-spacing:-.01em;
  scroll-margin-top:120px;
}
.post-body h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--primary),var(--violet));
  box-shadow:0 0 14px rgba(54,230,201,.45);
}
.post-body h3{
  font-size:21px;font-weight:600;margin:36px 0 14px;padding-left:14px;
  border-left:2px solid rgba(54,230,201,.5);scroll-margin-top:120px;
}
.post-body h4{font-size:18px;font-weight:600;margin:28px 0 12px;color:#E5ECF5}
.post-body ul,.post-body ol{margin:0 0 22px;padding-left:24px}
.post-body ul li,.post-body ol li{margin-bottom:10px;padding-left:4px}
.post-body ul{list-style:disc}
.post-body ol{list-style:decimal}
.post-body ul li::marker{color:var(--primary)}
.post-body ol li::marker{color:var(--primary);font-weight:600}
.post-body strong{color:#FFFFFF;font-weight:600}
.post-body a{color:var(--primary);border-bottom:1px solid rgba(54,230,201,.35)}
.post-body a:hover{border-bottom-color:var(--primary);color:#8CF6E4}
.post-body blockquote{
  margin:28px 0;padding:18px 22px 18px 24px;
  background:linear-gradient(90deg,rgba(123,97,255,.12),rgba(123,97,255,.02));
  border-left:3px solid var(--violet);border-radius:0 14px 14px 0;color:#C9D4E0;
}
.post-body blockquote p:last-child{margin-bottom:0}
.post-body img{border-radius:16px;border:1px solid var(--line);margin:26px auto}
.post-body figure{margin:28px 0}
.post-body figcaption{text-align:center;color:var(--text-3);font-size:13.5px;margin-top:12px}
.post-body hr{border:0;height:1px;background:var(--line);margin:40px 0}
.post-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  background:rgba(123,97,255,.16);color:#C7BCFF;
  padding:2px 7px;border-radius:6px;font-size:14.5px;
}
.post-body pre{
  background:var(--bg-soft);border:1px solid var(--line);border-radius:14px;
  padding:18px 20px;overflow-x:auto;margin:0 0 24px;
}
.post-body pre code{background:transparent;color:#B8E9DC;padding:0;font-size:14px;line-height:1.8}
.post-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px}
.post-body th,.post-body td{border:1px solid var(--line);padding:12px 15px;text-align:left;vertical-align:top}
.post-body th{background:rgba(54,230,201,.08);color:var(--text);font-weight:600}
.post-body tbody tr:nth-child(even){background:rgba(255,255,255,.02)}

.post-empty{
  padding:56px 32px;border-radius:var(--radius);text-align:center;
  background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow);
}
.post-empty i{font-size:34px;color:var(--primary);opacity:.8}
.post-empty h2{font-size:24px;margin:18px 0 10px}
.post-empty p{color:var(--text-2);margin-bottom:24px}

/* ---------- Sidebar ---------- */
.article-side{position:sticky;top:104px;display:flex;flex-direction:column;gap:22px}
.side-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:0 18px 44px rgba(0,0,0,.32);
}
.side-card h3{
  font-size:15px;font-weight:600;letter-spacing:.06em;color:var(--text);
  display:flex;align-items:center;gap:9px;margin-bottom:16px;
}
.side-card h3::before{
  content:"";width:3px;height:15px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--violet));
}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:360px;overflow-y:auto}
.toc-link{
  display:block;padding:8px 10px;border-radius:9px;font-size:14px;color:var(--text-2);
  border-left:2px solid transparent;line-height:1.6;
}
.toc-link:hover{color:var(--primary);background:rgba(54,230,201,.06)}
.toc-link.is-sub{padding-left:22px;font-size:13.5px;color:var(--text-3)}
.toc-link.is-active{
  color:var(--primary);background:rgba(54,230,201,.09);border-left-color:var(--primary);
  box-shadow:inset 0 0 20px rgba(54,230,201,.06);
}
.side-note{font-size:14px;color:var(--text-2);line-height:1.8}
.side-note + .btn{margin-top:18px}
.side-list{display:flex;flex-direction:column;gap:14px}
.side-list a{
  display:block;font-size:14.5px;color:var(--text-2);line-height:1.65;
  padding-left:14px;position:relative;
}
.side-list a::before{
  content:"";position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 8px rgba(54,230,201,.7);
}
.side-list a:hover{color:var(--primary)}
.side-cta{
  background:linear-gradient(150deg,rgba(54,230,201,.14),rgba(123,97,255,.14));
  border:1px solid rgba(54,230,201,.24);
}
.side-cta p{font-size:14px;color:var(--text-2);margin-bottom:16px;line-height:1.8}

/* ---------- Related cards ---------- */
.related-grid{margin-top:8px}
.card{
  position:relative;height:100%;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;z-index:3;
  background:linear-gradient(90deg,var(--primary),var(--violet));
  opacity:.55;transition:opacity .3s ease;
}
.card:hover{transform:translateY(-4px);border-color:rgba(54,230,201,.45);box-shadow:0 28px 60px rgba(0,0,0,.5)}
.card:hover::before{opacity:1}
.card-thumb{position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--bg-soft)}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.card:hover .card-thumb img{transform:scale(1.05)}
.card-thumb .tag{position:absolute;top:14px;left:14px;background:rgba(7,10,15,.78);backdrop-filter:blur(6px)}
.card-body{padding:24px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:19px;font-weight:600;line-height:1.5;margin-bottom:12px}
.card-body h3 a{color:var(--text)}
.card:hover .card-body h3 a{color:var(--primary)}
.card-body p{font-size:14.5px;color:var(--text-2);line-height:1.82;margin-bottom:18px}
.card-meta{
  display:flex;align-items:center;gap:14px;margin-top:auto;
  font-size:13px;color:var(--text-3);
}
.card-meta i{color:var(--primary);opacity:.8;margin-right:5px}
.card-link{
  display:inline-flex;align-items:center;gap:7px;margin-top:18px;
  font-size:14px;font-weight:600;color:var(--primary);
}
.card-link i{transition:transform .25s ease;font-size:12px}
.card-link:hover i{transform:translateX(4px)}

/* ---------- FAQ ---------- */
.accordion{border:0;background:transparent;margin:0}
.accordion .accordion-item{
  border:1px solid var(--line);background:var(--panel);
  border-radius:16px;margin-bottom:14px;overflow:hidden;
  transition:border-color .3s ease,box-shadow .3s ease;
}
.accordion .accordion-item:hover{border-color:rgba(54,230,201,.32)}
.accordion .accordion-item.is-active{border-color:rgba(54,230,201,.42);box-shadow:0 18px 44px rgba(0,0,0,.35)}
.accordion .accordion-title{
  position:relative;display:block;border:0;background:transparent;
  color:var(--text);font-size:16.5px;font-weight:600;line-height:1.6;
  padding:20px 58px 20px 26px;
}
.accordion .accordion-title::before{
  content:"" !important;
  position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--violet));
  font-family:inherit;display:block;
}
.accordion .accordion-title::after{
  content:"\f078" !important;
  font-family:"Font Awesome 6 Free";font-weight:900;font-size:13px;
  position:absolute;right:24px;top:50%;transform:translateY(-50%);
  color:var(--text-3);transition:transform .3s ease,color .3s ease;
}
.accordion .accordion-item.is-active .accordion-title::after{transform:translateY(-50%) rotate(180deg);color:var(--primary)}
.accordion .accordion-item.is-active .accordion-title{background:rgba(54,230,201,.06);color:var(--primary)}
.accordion .accordion-content{
  border:0;background:transparent;padding:0 26px 22px 26px;color:var(--text-2);
  font-size:15px;line-height:1.9;
}
.accordion .accordion-content p{margin:0 0 12px}
.accordion .accordion-content p:last-child{margin-bottom:0}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;border-radius:24px;
  background:linear-gradient(140deg,rgba(54,230,201,.14) 0%,rgba(123,97,255,.16) 52%,rgba(7,10,15,.2) 100%),var(--panel);
  border:1px solid rgba(54,230,201,.22);
  padding:52px 48px;
  box-shadow:var(--shadow);
}
.cta-panel::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle at 82% 18%,rgba(54,230,201,.22),transparent 55%),
                   linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:auto,52px 52px;
  pointer-events:none;
}
.cta-panel .cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.35fr .9fr;gap:40px;align-items:center}
.cta-panel h2{font-size:34px;font-weight:700;letter-spacing:-.015em;line-height:1.3}
.cta-panel p{margin-top:14px;color:var(--text-2);font-size:16px;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.cta-side{display:flex;flex-direction:column;gap:14px}
.cta-stat{
  background:rgba(7,10,15,.55);border:1px solid var(--line);border-radius:16px;
  padding:18px 20px;display:flex;align-items:center;gap:14px;
}
.cta-stat i{color:var(--primary);font-size:18px}
.cta-stat strong{display:block;font-family:var(--font-num);font-size:20px;font-weight:700;color:var(--text)}
.cta-stat span{font-size:13.5px;color:var(--text-3)}

/* ---------- Privacy strip ---------- */
.privacy-strip{
  margin-top:34px;padding:18px 22px;border-radius:14px;
  background:rgba(255,255,255,.02);border:1px dashed var(--line-strong);
  font-size:13.5px;color:var(--text-3);line-height:1.85;
}
.privacy-strip a{color:var(--text-2);text-decoration:underline;text-decoration-color:rgba(54,230,201,.5)}
.privacy-strip a:hover{color:var(--primary)}

/* ---------- Modal ---------- */
.modal{
  position:fixed;inset:0;z-index:120;display:flex;align-items:center;justify-content:center;
  padding:24px;opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;
}
.modal.is-open{opacity:1;visibility:visible}
.modal-mask{position:absolute;inset:0;background:rgba(3,6,10,.72);backdrop-filter:blur(4px)}
.modal-panel{
  position:relative;z-index:2;width:100%;max-width:580px;
  background:linear-gradient(180deg,#131B28,#0D131C);
  border:1px solid var(--line-strong);border-radius:22px;
  padding:34px 34px 30px;box-shadow:0 40px 90px rgba(0,0,0,.7);
  transform:translateY(14px) scale(.97);transition:transform .3s ease;
  max-height:calc(100vh - 48px);overflow-y:auto;
}
.modal.is-open .modal-panel{transform:translateY(0) scale(1)}
.modal-close{
  position:absolute;top:18px;right:18px;width:38px;height:38px;border-radius:11px;
  border:1px solid var(--line-strong);background:transparent;color:var(--text-2);
  display:inline-flex;align-items:center;justify-content:center;
}
.modal-close:hover{color:var(--primary);border-color:var(--primary)}
.modal-panel h2{font-size:24px;font-weight:700;margin-bottom:10px}
.modal-panel > p{color:var(--text-2);font-size:14.5px;margin-bottom:24px}
.form-row{margin-bottom:18px}
.form-row label{display:block;font-size:13.5px;color:var(--text-2);margin-bottom:8px;font-weight:500}
.form-row input[type="text"],
.form-row input[type="tel"],
.form-row input[type="email"],
.form-row select,
.form-row textarea{
  width:100%;background:#0B111A;border:1px solid var(--line-strong);
  border-radius:12px;padding:13px 15px;font-size:14.5px;color:var(--text);
  outline:none;transition:border-color .25s ease,box-shadow .25s ease;
  appearance:none;-webkit-appearance:none;
}
.form-row select{
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath fill='%23A7B3C2' d='M1.4 0 6 4.6 10.6 0 12 1.4 6 7.4 0 1.4z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 15px center;background-size:11px;
  padding-right:40px;
}
.form-row textarea{min-height:96px;resize:vertical;line-height:1.75}
.form-row input::placeholder,.form-row textarea::placeholder{color:#5D6A79}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{
  border-color:var(--primary);box-shadow:0 0 0 3px rgba(54,230,201,.14);
}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--text-3);line-height:1.7;margin:6px 0 22px}
.check-row input[type="checkbox"]{
  width:16px;height:16px;margin-top:3px;accent-color:var(--primary);flex-shrink:0;
}
.check-row a{color:var(--text-2);text-decoration:underline;text-decoration-color:rgba(54,230,201,.5)}
.check-row a:hover{color:var(--primary)}
.form-hint{font-size:12.5px;color:var(--text-3);margin-top:14px;text-align:center}

/* ---------- Footer ---------- */
.site-footer{
  position:relative;margin-top:20px;
  background:linear-gradient(180deg,#0A0F17 0%,#070A0F 100%);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(54,230,201,.7) 30%,rgba(123,97,255,.6) 70%,transparent);
}
.footer-top{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;
  padding:64px 24px 48px;
}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{color:var(--text-2);font-size:14px;line-height:1.9;max-width:400px}
.footer-col h4{
  font-size:15px;font-weight:600;color:var(--text);margin-bottom:18px;
  display:flex;align-items:center;gap:9px;
}
.footer-col h4::before{
  content:"";width:3px;height:14px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--violet));
}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:22px 24px 30px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.back-top{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 18px;border-radius:999px;
  background:rgba(54,230,201,.07);border:1px solid rgba(54,230,201,.3);
  color:var(--primary);font-size:13px;font-weight:500;
  transition:background .25s ease,transform .25s ease;
}
.back-top:hover{background:rgba(54,230,201,.18);transform:translateY(-2px)}
.back-top:focus-visible{outline:2px solid var(--primary);outline-offset:3px}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:1180px){
  .article-layout{grid-template-columns:minmax(0,1fr) 290px;gap:40px}
  .footer-top{grid-template-columns:1.4fr 1fr 1fr;}
  .footer-col:last-child{grid-column:span 1}
}
@media (max-width:1024px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions .btn-sm{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-side{position:static;margin-top:8px}
  .article-main{max-width:100%}
  .page-banner h1{font-size:36px}
  .cta-panel .cta-inner{grid-template-columns:1fr;gap:30px}
  .section{padding:72px 0}
  .section-head h2{font-size:32px}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .header-inner{min-height:68px}
  .brand-text{font-size:16.5px}
  .page-banner{padding:44px 0 48px}
  .page-banner h1{font-size:30px;line-height:1.28}
  .article-wrap{padding:44px 0 72px}
  .post-body{font-size:16.5px;line-height:1.9}
  .post-body h2{font-size:23px;margin:40px 0 16px}
  .post-body h3{font-size:19px}
  .post-body table{display:block;overflow-x:auto;white-space:nowrap}
  .cta-panel{padding:36px 26px;border-radius:20px}
  .cta-panel h2{font-size:26px}
  .cta-actions .btn{width:100%}
  .section{padding:60px 0}
  .section-head h2{font-size:27px}
  .modal-panel{padding:28px 22px 24px;border-radius:18px}
  .footer-top{grid-template-columns:1fr;gap:28px;padding:48px 20px 36px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:14px}
}
@media (max-width:520px){
  .page-banner h1{font-size:26px}
  .article-meta{gap:8px 14px}
  .article-meta .divider{display:none}
  .accordion .accordion-title{font-size:15.5px;padding:18px 50px 18px 22px}
  .accordion .accordion-content{padding:0 22px 20px 22px}
  .card-body{padding:20px}
  .side-card{padding:20px}
  .btn{padding:13px 20px}
}

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

/* roulang page: category3 */
:root{
  --ink:#070A0F;
  --graphite:#111722;
  --panel:#151D2A;
  --panel-2:#1A2433;
  --text:#F4F7FB;
  --muted:#A7B3C2;
  --dim:#6F7C8C;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --teal:#36E6C9;
  --violet:#7B61FF;
  --amber:#F5B85B;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 24px 60px rgba(0,0,0,.45);
  --shadow-soft:0 14px 34px rgba(0,0,0,.32);
  --container:1240px;
  --font:"Inter","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:112px}
body{
  margin:0;
  background:var(--ink);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .22s ease,opacity .22s ease}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.22;letter-spacing:-.02em}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,select,textarea{font-family:inherit;font-size:15px}
:focus-visible{outline:2px solid var(--teal);outline-offset:3px;border-radius:6px}
::selection{background:rgba(54,230,201,.3);color:#04121A}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- Foundation 覆盖 ---------- */
a:hover,a:focus{color:var(--teal)}
.button,.button:focus{outline:none}
.accordion{background:transparent;border:0;box-shadow:none}
.accordion-item{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-bottom:14px;transition:border-color .25s ease,background .25s ease}
.accordion-item:hover{border-color:rgba(54,230,201,.35)}
.accordion-title{
  position:relative;display:block;border:0;background:transparent;
  padding:20px 58px 20px 46px;font-size:16.5px;font-weight:600;color:var(--text);
  letter-spacing:0;line-height:1.5;transition:color .22s ease,background .22s ease;
}
.accordion-title::before{
  content:"";position:absolute;left:24px;top:50%;transform:translateY(-50%);
  width:3px;height:18px;border-radius:3px;background:var(--teal);
  box-shadow:0 0 12px rgba(54,230,201,.75);
}
.accordion-title::after{
  content:"";position:absolute;right:26px;top:50%;width:9px;height:9px;
  border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);
  transform:translateY(-70%) rotate(45deg);transition:transform .28s ease,border-color .22s ease;
}
.accordion-title:hover{color:var(--teal);background:rgba(54,230,201,.05)}
.accordion-item.is-active .accordion-title{color:var(--teal);background:rgba(54,230,201,.06)}
.accordion-item.is-active .accordion-title::after{transform:translateY(-30%) rotate(225deg);border-color:var(--teal)}
.accordion-content{border:0;border-top:1px solid var(--line);background:rgba(7,10,15,.4);padding:20px 26px 24px 46px;color:var(--muted);font-size:15.5px}
.accordion-content p{margin-bottom:12px}

/* ---------- 按钮系统 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 28px;border-radius:999px;font-size:15.5px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(120deg,var(--teal),#4ff0d6);color:#04141A;
  box-shadow:0 14px 34px rgba(54,230,201,.28);
}
.btn-primary:hover{color:#04141A;transform:translateY(-2px);box-shadow:0 20px 44px rgba(54,230,201,.42);background:linear-gradient(120deg,#54f0d8,var(--teal))}
.btn-ghost{border-color:var(--line-strong);color:var(--text);background:rgba(255,255,255,.02)}
.btn-ghost:hover{color:var(--teal);border-color:var(--teal);background:rgba(54,230,201,.09);transform:translateY(-2px)}
.btn-violet{background:rgba(123,97,255,.16);border-color:rgba(123,97,255,.5);color:#D9D2FF}
.btn-violet:hover{color:#fff;background:rgba(123,97,255,.3);border-color:var(--violet);transform:translateY(-2px)}
.btn-block{width:100%}
.btn:active{transform:translateY(0) scale(.99)}
.btn[disabled]{opacity:.45;cursor:not-allowed}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,10,15,.86);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,rgba(54,230,201,0),var(--teal) 22%,var(--violet) 68%,rgba(123,97,255,0));
  opacity:.7;
}
.header-inner{display:flex;align-items:center;gap:26px;min-height:78px}
.brand{display:inline-flex;align-items:center;gap:12px;font-weight:800;font-size:18px;letter-spacing:.01em;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--teal),var(--violet));color:#04121A;
  font-weight:900;font-size:16px;box-shadow:0 8px 22px rgba(54,230,201,.32);
}
.brand-text{white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;padding:10px 15px;border-radius:10px;font-size:15px;color:var(--muted);
  transition:color .22s ease,background .22s ease;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.055)}
.nav-link.is-active{color:var(--text)}
.nav-link.is-active::after{
  content:"";position:absolute;left:15px;right:15px;bottom:3px;height:2px;border-radius:2px;
  background:var(--teal);box-shadow:0 0 12px var(--teal);
}
.nav-cta{margin-left:14px;padding:11px 22px;font-size:14.5px}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-strong);align-items:center;justify-content:center;color:var(--text);
}
.nav-toggle:hover{border-color:var(--teal);color:var(--teal)}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,7,11,.72);backdrop-filter:blur(3px);
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);z-index:95;
  background:linear-gradient(180deg,#0D131C,#070A0F);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .34s cubic-bezier(.22,.7,.3,1);
  display:flex;flex-direction:column;padding:26px 22px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{width:40px;height:40px;border-radius:11px;border:1px solid var(--line-strong);display:grid;place-items:center;color:var(--muted)}
.drawer-close:hover{color:var(--teal);border-color:var(--teal)}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:24px}
.drawer-nav a{padding:13px 16px;border-radius:12px;color:var(--muted);font-size:15.5px;border:1px solid transparent}
.drawer-nav a:hover{color:var(--text);background:rgba(255,255,255,.05);border-color:var(--line)}
.drawer-nav a.is-active{color:var(--teal);background:rgba(54,230,201,.09);border-color:rgba(54,230,201,.32)}
.drawer-foot{margin-top:auto;padding-top:22px;border-top:1px solid var(--line);font-size:13px;color:var(--dim);line-height:1.9}

/* ---------- 面包屑 ---------- */
.crumb-bar{border-bottom:1px solid var(--line);background:rgba(17,23,34,.55)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:16px 0;font-size:13.5px;color:var(--dim)}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--teal)}
.crumb .sep{color:rgba(255,255,255,.2)}
.crumb .current{color:var(--teal)}

/* ---------- Hero ---------- */
.hero-cat{
  position:relative;overflow:hidden;
  background-image:url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;
  padding:92px 0 84px;
}
.hero-cat::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(7,10,15,.96) 0%,rgba(7,10,15,.86) 46%,rgba(17,23,34,.76) 100%);
}
.hero-cat::after{
  content:"";position:absolute;inset:0;opacity:.3;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:56px 56px;
  mask-image:radial-gradient(circle at 78% 32%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 78% 32%,#000 0%,transparent 72%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.85fr);gap:48px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;padding:8px 16px;border-radius:999px;
  background:rgba(54,230,201,.1);border:1px solid rgba(54,230,201,.32);
  color:var(--teal);font-size:13.5px;font-weight:600;letter-spacing:.06em;margin-bottom:22px;
}
.hero-badge i{font-size:12px}
.hero-cat h1{font-size:clamp(34px,4.4vw,60px);line-height:1.12;font-weight:900;margin-bottom:20px}
.hero-cat h1 em{font-style:normal;color:var(--teal);text-shadow:0 0 30px rgba(54,230,201,.4)}
.hero-sub{font-size:17px;line-height:1.9;color:var(--muted);max-width:640px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-points{display:flex;flex-wrap:wrap;gap:12px 26px}
.hero-points li{display:flex;align-items:center;gap:9px;font-size:14.5px;color:var(--muted)}
.hero-points i{color:var(--teal);font-size:13px}

.hero-card{
  background:linear-gradient(180deg,rgba(21,29,42,.94),rgba(11,16,24,.94));
  border:1px solid var(--line-strong);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);padding:24px;position:relative;overflow:hidden;
}
.hero-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--teal),var(--violet));
}
.hc-head{display:flex;align-items:center;gap:10px;font-size:14px;font-weight:600;color:var(--text);padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:16px}
.hc-dot{width:9px;height:9px;border-radius:50%;background:var(--teal);box-shadow:0 0 12px var(--teal);animation:pulse 2.4s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hc-list{display:flex;flex-direction:column;gap:12px}
.hc-list li{display:grid;grid-template-columns:52px 1fr auto;gap:12px;align-items:center;font-size:13.5px;padding:10px 12px;border-radius:12px;background:rgba(255,255,255,.035);border:1px solid var(--line)}
.hc-time{color:var(--dim);font-variant-numeric:tabular-nums}
.hc-info{color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hc-ok{color:var(--teal);font-weight:600;font-size:13px}
.hc-warn{color:var(--amber);font-weight:600;font-size:13px}
.hc-foot{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--dim)}
.hc-foot strong{color:var(--amber);font-weight:600}

/* ---------- 主体布局 ---------- */
.main-wrap{padding:76px 0 90px;background:
  radial-gradient(900px 420px at 88% 0%,rgba(123,97,255,.12),transparent 70%),
  radial-gradient(760px 400px at 4% 18%,rgba(54,230,201,.09),transparent 72%),
  var(--ink);
}
.audit-layout{display:grid;grid-template-columns:296px minmax(0,1fr);gap:44px;align-items:start}

/* 左侧目录 */
.toc{
  position:sticky;top:106px;
  background:linear-gradient(180deg,rgba(21,29,42,.92),rgba(10,14,21,.92));
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px 22px;
  box-shadow:var(--shadow-soft);
}
.toc-title{font-size:13px;letter-spacing:.16em;color:var(--dim);font-weight:700;margin-bottom:16px;text-transform:uppercase}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:10px;
  font-size:14.5px;color:var(--muted);border-left:2px solid transparent;
  transition:color .22s ease,background .22s ease,border-color .22s ease,padding-left .22s ease;
}
.toc-list a::before{content:"";width:5px;height:5px;border-radius:50%;background:rgba(255,255,255,.24);flex:0 0 auto;transition:background .22s ease,box-shadow .22s ease}
.toc-list a:hover{color:var(--text);background:rgba(255,255,255,.05)}
.toc-list a.is-current{color:var(--teal);background:rgba(54,230,201,.09);border-left-color:var(--teal);padding-left:16px}
.toc-list a.is-current::before{background:var(--teal);box-shadow:0 0 10px var(--teal)}
.toc-side{margin-top:22px;padding-top:20px;border-top:1px solid var(--line)}
.toc-side p{font-size:13.5px;color:var(--dim);line-height:1.85;margin-bottom:14px}

/* ---------- 内容区块 ---------- */
.audit-content{display:flex;flex-direction:column;gap:60px;min-width:0}
.block{scroll-margin-top:112px}
.block-head{margin-bottom:26px}
.section-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;letter-spacing:.14em;
  color:var(--teal);margin-bottom:14px;
}
.section-tag::before{content:"";width:20px;height:2px;border-radius:2px;background:var(--teal);box-shadow:0 0 10px var(--teal)}
.block h2{font-size:clamp(26px,2.9vw,36px);font-weight:800;margin-bottom:16px}
.block h3{font-size:19px;font-weight:700;margin-bottom:12px;color:var(--text)}
.block .lead{color:var(--muted);font-size:16px;line-height:1.95;max-width:760px}

.panel{
  background:linear-gradient(180deg,rgba(21,29,42,.92),rgba(14,19,28,.92));
  border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:30px;box-shadow:var(--shadow-soft);position:relative;overflow:hidden;
}
.panel::before{content:"";position:absolute;top:0;left:0;width:64px;height:2px;background:var(--teal);box-shadow:0 0 14px var(--teal)}

/* 图文混排 */
.media-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:34px;align-items:center;margin-top:26px}
.media-row.reverse .media-figure{order:2}
.media-figure{margin:0;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--panel);box-shadow:var(--shadow-soft)}
.media-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s ease}
.media-figure:hover img{transform:scale(1.04)}
.media-figure figcaption{padding:13px 18px;font-size:13px;color:var(--dim);border-top:1px solid var(--line);line-height:1.7}

.tick-list{display:flex;flex-direction:column;gap:13px}
.tick-list li{display:flex;gap:12px;font-size:15.5px;color:var(--muted);line-height:1.8}
.tick-list i{color:var(--teal);font-size:14px;margin-top:7px;flex:0 0 auto}
.tick-list strong{color:var(--text);font-weight:600}

/* 字段网格 */
.field-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px;margin-top:26px}
.field-card{
  background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.field-card:hover{transform:translateY(-4px);border-color:rgba(54,230,201,.45);box-shadow:0 20px 44px rgba(0,0,0,.42)}
.field-card i{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:11px;background:rgba(54,230,201,.1);color:var(--teal);font-size:15px;margin-bottom:14px}
.field-card h4{font-size:15.5px;font-weight:700;margin-bottom:8px}
.field-card p{font-size:14px;color:var(--dim);line-height:1.8;margin:0}

/* 步骤 */
.steps{counter-reset:step;display:flex;flex-direction:column;gap:16px;margin-top:8px}
.steps li{
  counter-increment:step;position:relative;padding:22px 24px 22px 74px;
  background:rgba(255,255,255,.028);border:1px solid var(--line);border-radius:var(--radius);
  transition:border-color .26s ease,background .26s ease,transform .26s ease;
}
.steps li:hover{border-color:rgba(123,97,255,.45);background:rgba(123,97,255,.06);transform:translateX(4px)}
.steps li::before{
  content:counter(step,decimal-leading-zero);position:absolute;left:24px;top:22px;
  font-size:15px;font-weight:800;color:var(--violet);letter-spacing:.04em;
  font-variant-numeric:tabular-nums;
}
.steps h3{font-size:16.5px;margin-bottom:8px}
.steps p{font-size:14.5px;color:var(--muted);margin:0;line-height:1.85}

/* 指标条 */
.kpi-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:34px}
.kpi{
  background:linear-gradient(180deg,rgba(21,29,42,.94),rgba(11,16,24,.94));
  border:1px solid var(--line);border-radius:var(--radius);padding:24px 20px;position:relative;overflow:hidden;
}
.kpi::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;background:linear-gradient(90deg,var(--teal),transparent 82%)}
.kpi-num{font-size:34px;font-weight:800;color:var(--teal);font-variant-numeric:tabular-nums;line-height:1.1;letter-spacing:-.02em}
.kpi-num span{font-size:14px;font-weight:600;color:var(--muted);margin-left:6px;letter-spacing:0}
.kpi p{font-size:13.5px;color:var(--dim);margin:10px 0 0;line-height:1.7}

/* 资源入口 */
.res-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:22px;margin-top:6px}
.res-card{
  display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.res-card:hover{transform:translateY(-5px);border-color:rgba(54,230,201,.45);box-shadow:0 26px 52px rgba(0,0,0,.46)}
.res-card img{width:100%;aspect-ratio:16/9;object-fit:cover;opacity:.88;transition:opacity .28s ease}
.res-card:hover img{opacity:1}
.res-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.res-body h3{font-size:16.5px;font-weight:700}
.res-body p{font-size:14px;color:var(--dim);line-height:1.8;margin:0}
.res-link{margin-top:auto;font-size:14px;font-weight:600;color:var(--teal);display:inline-flex;align-items:center;gap:8px}
.res-link i{transition:transform .24s ease}
.res-card:hover .res-link i{transform:translateX(5px)}

/* FAQ */
.faq-wrap{margin-top:6px}

/* 表单 */
.consult-shell{
  display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:38px;
  background:linear-gradient(135deg,rgba(21,29,42,.96),rgba(10,15,23,.96));
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:36px;box-shadow:var(--shadow);
}
.consult-intro h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:14px}
.consult-intro p{color:var(--muted);font-size:15px;line-height:1.9}
.consult-notes{margin-top:22px;display:flex;flex-direction:column;gap:11px}
.consult-notes li{display:flex;gap:11px;font-size:14.5px;color:var(--muted)}
.consult-notes i{color:var(--amber);margin-top:7px;font-size:13px}

.lead-form{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-field{display:flex;flex-direction:column;gap:8px}
.form-field.full{grid-column:1/-1}
.form-field label{font-size:13.5px;font-weight:600;color:var(--muted);letter-spacing:.02em}
.form-field label .req{color:var(--amber);margin-left:4px}
.form-field input,.form-field select,.form-field textarea{
  width:100%;padding:13px 15px;border-radius:12px;
  background:rgba(7,10,15,.7);border:1px solid var(--line-strong);color:var(--text);
  transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.form-field textarea{min-height:104px;resize:vertical;line-height:1.75}
.form-field input::placeholder,.form-field textarea::placeholder{color:rgba(111,124,140,.85)}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:none;border-color:var(--teal);box-shadow:0 0 0 4px rgba(54,230,201,.14);background:rgba(7,10,15,.9);
}
.form-field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.consent{grid-column:1/-1;display:flex;gap:12px;align-items:flex-start;font-size:13.5px;color:var(--muted);line-height:1.8}
.consent input{width:18px;height:18px;margin-top:4px;accent-color:var(--teal);flex:0 0 auto}
.consent a{color:var(--teal);text-decoration:underline;text-underline-offset:3px}
.form-actions{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.form-hint{font-size:13px;color:var(--dim)}
.form-msg{grid-column:1/-1;display:none;padding:13px 16px;border-radius:12px;font-size:14px;border:1px solid rgba(54,230,201,.4);background:rgba(54,230,201,.09);color:var(--teal)}
.form-msg.is-error{border-color:rgba(245,184,91,.5);background:rgba(245,184,91,.1);color:var(--amber)}
.privacy-note{margin-top:22px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--dim);line-height:1.85}
.privacy-note a{color:var(--muted);text-decoration:underline;text-underline-offset:3px}
.privacy-note a:hover{color:var(--teal)}

/* 底部 CTA */
.cta-band{
  margin-top:70px;position:relative;overflow:hidden;
  border:1px solid rgba(54,230,201,.28);border-radius:var(--radius-lg);
  background:
    radial-gradient(620px 320px at 12% 0%,rgba(54,230,201,.16),transparent 68%),
    radial-gradient(560px 320px at 92% 100%,rgba(123,97,255,.2),transparent 70%),
    linear-gradient(135deg,#101724,#0A0F17);
  padding:52px 44px;
}
.cta-band h2{font-size:clamp(24px,3vw,34px);margin-bottom:14px}
.cta-band p{color:var(--muted);max-width:660px;font-size:15.5px;margin-bottom:26px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{background:#05080C;border-top:1px solid var(--line);position:relative;margin-top:0}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--teal) 30%,var(--violet) 70%,transparent);
  opacity:.65;
}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px;padding:66px 0 46px}
.footer-brand p{color:var(--dim);font-size:14px;line-height:1.9;margin-top:18px;max-width:360px}
.site-footer .brand{font-size:17px}
.footer-col h4{font-size:14.5px;font-weight:700;color:var(--text);margin-bottom:18px;letter-spacing:.04em}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:var(--dim)}
.footer-col a:hover{color:var(--teal)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
  padding:22px 0 34px;border-top:1px solid var(--line);font-size:13.5px;color:var(--dim);
}
.back-top{
  display:inline-flex;align-items:center;gap:9px;padding:10px 18px;border-radius:999px;
  border:1px solid var(--line-strong);font-size:13.5px;color:var(--muted);
  transition:color .22s ease,border-color .22s ease,transform .22s ease;
}
.back-top:hover{color:var(--teal);border-color:var(--teal);transform:translateY(-2px)}

/* 滚动 reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1100px){
  .audit-layout{grid-template-columns:1fr;gap:34px}
  .toc{position:static}
  .toc-list{flex-direction:row;flex-wrap:wrap;gap:8px}
  .toc-list a{background:rgba(255,255,255,.035);border-left:0;border:1px solid var(--line)}
  .toc-list a.is-current{border-left:0;border-color:rgba(54,230,201,.5)}
  .toc-side{display:none}
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .kpi-bar{grid-template-columns:repeat(2,1fr)}
  .consult-shell{grid-template-columns:1fr;padding:30px}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px}
}
@media screen and (max-width:1024px){
  .main-nav,.nav-cta{display:none}
  .nav-toggle{display:inline-flex}
}
@media screen and (max-width:860px){
  .media-row,.media-row.reverse{grid-template-columns:1fr;gap:24px}
  .media-row.reverse .media-figure{order:0}
  .hero-cat{padding:70px 0 62px}
  .main-wrap{padding:56px 0 68px}
  .audit-content{gap:48px}
}
@media screen and (max-width:640px){
  body{font-size:15.5px}
  .container{padding:0 20px}
  .header-inner{min-height:70px}
  .brand{font-size:16.5px}
  .brand-text{font-size:16px}
  .hero-cat h1{font-size:clamp(28px,7.6vw,38px)}
  .hero-sub{font-size:15.5px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .hero-points{flex-direction:column;gap:10px}
  .kpi-bar{grid-template-columns:1fr}
  .lead-form{grid-template-columns:1fr}
  .form-actions{flex-direction:column;align-items:stretch}
  .form-actions .btn{width:100%}
  .panel{padding:22px}
  .consult-shell{padding:22px}
  .cta-band{padding:34px 22px}
  .cta-band .btn{width:100%}
  .footer-top{grid-template-columns:1fr;gap:28px;padding:48px 0 34px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .accordion-title{padding:18px 50px 18px 38px;font-size:15.5px}
  .accordion-content{padding:18px 20px 22px 38px;font-size:14.5px}
  .steps li{padding:20px 20px 20px 62px}
  .steps li::before{left:20px;top:20px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
/* ===================== 设计变量 ===================== */
:root{
  --bg:#070A0F;
  --bg-elev:#111722;
  --panel:#151D2A;
  --panel-2:#1a2433;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --teal:#36E6C9;
  --teal-soft:rgba(54,230,201,.12);
  --violet:#7B61FF;
  --violet-soft:rgba(123,97,255,.14);
  --amber:#F5B85B;
  --text:#F4F7FB;
  --muted:#A7B3C2;
  --dim:#6F7C8C;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 24px 60px rgba(0,0,0,.45);
  --shadow-soft:0 14px 36px rgba(0,0,0,.34);
  --container:1240px;
  --section-y:118px;
  --font-cn:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","SF Pro Display","Helvetica Neue",var(--font-cn);
}

/* ===================== 基础重置 ===================== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius)}
a{color:var(--teal);text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:#84f5e1}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--teal);outline-offset:2px;border-radius:8px;
}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,select,textarea{font-family:inherit;font-size:16px}
::selection{background:rgba(54,230,201,.28);color:#fff}

/* ===================== 容器与排版 ===================== */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:var(--section-y) 0;position:relative}
.section--tight{padding:88px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--teal);font-weight:700;margin-bottom:18px;
}
.eyebrow::before{
  content:"";width:24px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--teal),var(--violet));
}
.section-head{max-width:820px;margin:0 auto 60px;text-align:center}
.section-head h2{
  font-size:clamp(28px,3.4vw,42px);line-height:1.22;font-weight:800;letter-spacing:-.01em;
}
.section-head p{margin-top:18px;color:var(--muted);font-size:17px}
.section-head--left{margin-left:0;text-align:left}
.lead{color:var(--muted);font-size:17px}
.grad-text{
  background:linear-gradient(100deg,var(--teal),#9ef6e6 45%,var(--violet));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

/* ===================== 头部导航 ===================== */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(7,10,15,.86);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:background .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{background:rgba(7,10,15,.97);box-shadow:0 12px 34px rgba(0,0,0,.55)}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(54,230,201,.7),rgba(123,97,255,.7),transparent);
}
.header-inner{display:flex;align-items:center;gap:22px;height:76px}
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--text);flex:0 0 auto}
.brand:hover{color:var(--text)}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  font-size:16px;font-weight:800;color:#04140f;
  background:linear-gradient(140deg,var(--teal),#8ef7e4);
  box-shadow:0 0 22px rgba(54,230,201,.42);
}
.brand-text{font-size:19px;font-weight:800;letter-spacing:.02em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;color:var(--muted);font-size:15px;font-weight:500;
  padding:10px 14px;border-radius:10px;transition:.22s ease;white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--text);background:var(--teal-soft)}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--teal),var(--violet));
  box-shadow:0 0 12px rgba(54,230,201,.7);
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);
  color:var(--text);background:rgba(255,255,255,.04);
}
.nav-toggle:hover{border-color:var(--teal);color:var(--teal)}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-size:15px;font-weight:700;line-height:1;
  padding:14px 28px;border-radius:999px;border:1px solid transparent;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn i{font-size:14px}
.btn-primary{
  background:linear-gradient(135deg,var(--teal),#2ec5ad);color:#04140f;
  box-shadow:0 10px 30px rgba(54,230,201,.26);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 40px rgba(54,230,201,.42);color:#04140f}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:rgba(255,255,255,.04);border-color:var(--line-strong);color:var(--text);
}
.btn-ghost:hover{border-color:var(--teal);color:var(--teal);transform:translateY(-2px);background:rgba(54,230,201,.07)}
.btn-amber{background:var(--amber);color:#211608}
.btn-amber:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(245,184,91,.32);color:#211608}
.btn-sm{padding:11px 20px;font-size:14px}
.btn-block{width:100%}
.btn[disabled]{opacity:.5;pointer-events:none}

/* ===================== Hero（居中强排版） ===================== */
.page-hero{
  position:relative;overflow:hidden;
  padding:56px 0 104px;text-align:center;
}
.page-hero-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity:.24;
}
.page-hero-grid{
  position:absolute;inset: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;
  -webkit-mask-image:radial-gradient(ellipse at 50% 26%,#000 0,transparent 74%);
  mask-image:radial-gradient(ellipse at 50% 26%,#000 0,transparent 74%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(ellipse at 50% 0%,rgba(54,230,201,.16),transparent 62%),
    radial-gradient(ellipse at 82% 84%,rgba(123,97,255,.16),transparent 60%),
    linear-gradient(180deg,rgba(7,10,15,.62),var(--bg) 92%);
}
.page-hero .container{position:relative;z-index:3}

.breadcrumb{
  display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:9px;
  font-size:13px;color:var(--dim);margin-bottom:30px;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--teal)}
.breadcrumb .sep{color:rgba(255,255,255,.22)}
.breadcrumb .current{color:var(--dim)}

.page-hero h1{
  font-size:clamp(32px,5vw,62px);
  line-height:1.1;font-weight:800;letter-spacing:-.02em;
  max-width:1000px;margin:0 auto;
}
.page-hero .hero-sub{
  max-width:780px;margin:26px auto 0;
  color:var(--muted);font-size:18px;line-height:1.85;
}
.hero-actions{
  display:flex;justify-content:center;flex-wrap:wrap;gap:14px;margin-top:36px;
}
.hero-badges{
  display:flex;justify-content:center;flex-wrap:wrap;gap:10px;margin-top:44px;
}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.035);
  font-size:13px;color:var(--muted);font-weight:500;
}
.badge i{color:var(--teal);font-size:12px}
.badge--amber i{color:var(--amber)}
.badge--violet i{color:var(--violet)}

/* ===================== 时间线 ===================== */
.timeline-wrap{position:relative}
.timeline{
  display:grid;grid-template-columns:repeat(5,1fr);gap:22px;
  position:relative;padding-top:8px;
}
.timeline::before{
  content:"";position:absolute;top:42px;left:8%;right:8%;height:1px;
  background:linear-gradient(90deg,var(--teal),var(--violet));
  opacity:.45;
}
.step{position:relative;text-align:center;padding:0 6px}
.step-num{
  width:68px;height:68px;margin:0 auto 22px;border-radius:50%;
  display:grid;place-items:center;
  font-family:var(--font-num);font-size:20px;font-weight:800;color:var(--teal);
  background:radial-gradient(circle at 50% 40%,#182333,#101725);
  border:1px solid rgba(54,230,201,.35);
  box-shadow:0 0 0 6px rgba(54,230,201,.05),0 12px 28px rgba(0,0,0,.4);
  position:relative;z-index:2;
}
.step:hover .step-num{border-color:var(--teal);box-shadow:0 0 0 8px rgba(54,230,201,.09),0 0 26px rgba(54,230,201,.3)}
.step h3{font-size:18px;font-weight:700;margin-bottom:10px}
.step p{font-size:14.5px;color:var(--muted);line-height:1.75}

/* ===================== 卡片矩阵 ===================== */
.matrix-card{
  height:100%;
  background:linear-gradient(180deg,var(--panel),#131b28);
  border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:32px 30px;
  box-shadow:var(--shadow-soft);
  position:relative;overflow:hidden;
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.matrix-card::before{
  content:"";position:absolute;left:0;top:0;height:2px;width:100%;
  background:linear-gradient(90deg,var(--teal),transparent 72%);
}
.matrix-card:hover{
  transform:translateY(-4px);
  border-color:rgba(54,230,201,.42);
  box-shadow:0 26px 60px rgba(0,0,0,.5),0 0 0 1px rgba(54,230,201,.12);
}
.matrix-card .card-icon{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;
  background:var(--teal-soft);color:var(--teal);font-size:19px;margin-bottom:20px;
}
.matrix-card.is-violet::before{background:linear-gradient(90deg,var(--violet),transparent 72%)}
.matrix-card.is-violet .card-icon{background:var(--violet-soft);color:#b0a1ff}
.matrix-card.is-violet:hover{border-color:rgba(123,97,255,.45)}
.matrix-card.is-amber::before{background:linear-gradient(90deg,var(--amber),transparent 72%)}
.matrix-card.is-amber .card-icon{background:rgba(245,184,91,.13);color:var(--amber)}
.matrix-card.is-amber:hover{border-color:rgba(245,184,91,.42)}
.matrix-card h3{font-size:21px;font-weight:700;margin-bottom:14px}
.matrix-card p{color:var(--muted);font-size:15.5px}
.card-list{margin-top:18px;display:grid;gap:10px}
.card-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.5px;color:var(--muted);
}
.card-list li i{color:var(--teal);font-size:12px;margin-top:8px;flex:0 0 auto}

/* ===================== 数据条 ===================== */
.stat-band{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:
    radial-gradient(ellipse at 12% 50%,rgba(54,230,201,.09),transparent 55%),
    radial-gradient(ellipse at 88% 50%,rgba(123,97,255,.1),transparent 55%),
    linear-gradient(180deg,#0c1119,#080c12);
}
.stat-cell{text-align:center;padding:14px 8px}
.stat-num{
  font-family:var(--font-num);font-size:clamp(34px,4.4vw,52px);
  font-weight:800;letter-spacing:-.02em;line-height:1;
  background:linear-gradient(120deg,#ffffff,#8ef7e4);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-num .unit{font-size:.5em;margin-left:6px;color:var(--teal);-webkit-text-fill-color:var(--teal);font-weight:700}
.stat-cell .stat-label{margin-top:14px;color:var(--muted);font-size:15px}
.stat-cell .stat-desc{margin-top:6px;color:var(--dim);font-size:13px}
.stat-rule{
  width:44px;height:2px;margin:18px auto 0;border-radius:2px;
  background:linear-gradient(90deg,var(--teal),var(--violet));
  box-shadow:0 0 12px rgba(54,230,201,.5);
}

/* ===================== 图文区块 ===================== */
.media-row{
  display:grid;grid-template-columns:1.02fr .98fr;gap:60px;align-items:center;
}
.media-row + .media-row{margin-top:104px}
.media-row.is-reverse .media-text{order:2}
.media-figure{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);
}
.media-figure img{width:100%;border-radius:0;aspect-ratio:16/11;object-fit:cover}
.media-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,10,15,.05),rgba(7,10,15,.55));
}
.media-figure .figure-tag{
  position:absolute;left:20px;bottom:20px;z-index:2;
  padding:8px 15px;border-radius:999px;
  background:rgba(7,10,15,.75);border:1px solid rgba(54,230,201,.32);
  font-size:13px;color:var(--teal);font-weight:600;
}
.media-text h2{
  font-size:clamp(26px,3vw,38px);line-height:1.24;font-weight:800;letter-spacing:-.01em;
  margin-bottom:20px;
}
.media-text > p{color:var(--muted);font-size:16.5px}
.check-list{margin-top:28px;display:grid;gap:16px}
.check-list li{
  display:flex;gap:14px;align-items:flex-start;
  padding:16px 18px;border-radius:var(--radius);
  background:rgba(255,255,255,.028);border:1px solid var(--line);
  transition:border-color .24s ease,transform .24s ease,background .24s ease;
}
.check-list li:hover{
  border-color:rgba(54,230,201,.36);transform:translateX(4px);background:rgba(54,230,201,.05);
}
.check-list .ci{
  width:30px;height:30px;border-radius:9px;flex:0 0 auto;
  display:grid;place-items:center;font-size:12px;
  background:var(--teal-soft);color:var(--teal);
}
.check-list strong{display:block;font-size:15.5px;font-weight:700;margin-bottom:4px}
.check-list span{color:var(--muted);font-size:14.5px;line-height:1.7}

/* ===================== FAQ ===================== */
.faq-wrap{max-width:920px;margin:0 auto}
.accordion{border:none;background:transparent;margin:0}
.accordion .accordion-item{
  border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(180deg,var(--panel),#131a26);
  margin-bottom:14px;overflow:hidden;
  transition:border-color .26s ease,box-shadow .26s ease,background .26s ease;
}
.accordion .accordion-item:hover{border-color:var(--line-strong)}
.accordion .accordion-item.is-active{
  border-color:rgba(54,230,201,.42);
  box-shadow:0 0 0 1px rgba(54,230,201,.12),var(--shadow-soft);
}
.accordion .accordion-title{
  display:block;position:relative;border:none;background:transparent;
  color:var(--text);font-size:17px;font-weight:600;line-height:1.6;
  padding:22px 66px 22px 28px;transition:color .22s ease;
}
.accordion .accordion-title::before{
  content:"";position:absolute;right:32px;top:50%;
  width:2px;height:13px;margin-top:-6.5px;display:block;
  background:var(--teal);border:none;border-radius:2px;
  transform:scaleY(1);transform-origin:center;transition:transform .26s ease;
}
.accordion .accordion-title::after{
  content:"";position:absolute;right:26.5px;top:50%;
  width:13px;height:2px;margin-top:-1px;border-radius:2px;
  background:var(--teal);transition:background .26s ease;
}
.accordion .accordion-item.is-active .accordion-title::before{transform:scaleY(0)}
.accordion .accordion-item.is-active .accordion-title::after{background:var(--violet)}
.accordion .accordion-title:hover{color:var(--teal)}
.accordion .accordion-content{
  border:none;background:transparent;color:var(--muted);
  padding:0 28px 24px;font-size:15.5px;line-height:1.85;
}

/* ===================== CTA 与表单 ===================== */
.cta-panel{
  position:relative;overflow:hidden;
  border-radius:26px;border:1px solid var(--line);
  background:linear-gradient(140deg,#131b28,#0d131c 62%,#101827);
  padding:56px;
  display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:center;
  box-shadow:var(--shadow);
}
.cta-panel::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:radial-gradient(ellipse at 78% 18%,#000,transparent 72%);
  mask-image:radial-gradient(ellipse at 78% 18%,#000,transparent 72%);
  pointer-events:none;
}
.cta-panel > *{position:relative;z-index:2}
.cta-panel h2{font-size:clamp(26px,3vw,40px);line-height:1.24;font-weight:800;letter-spacing:-.01em}
.cta-panel .cta-lead{margin-top:18px;color:var(--muted);font-size:16.5px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.cta-side{
  background:rgba(7,10,15,.6);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:28px;
}
.cta-side h3{font-size:17px;font-weight:700;margin-bottom:18px;display:flex;align-items:center;gap:10px}
.cta-side h3 i{color:var(--amber)}
.cta-side ul{display:grid;gap:14px}
.cta-side li{
  display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--muted);
}
.cta-side li i{color:var(--teal);font-size:12px;margin-top:7px}

.privacy-strip{
  margin-top:34px;text-align:center;font-size:13px;color:var(--dim);line-height:1.8;
}
.privacy-strip a{color:var(--muted);border-bottom:1px dashed rgba(167,179,194,.45)}
.privacy-strip a:hover{color:var(--teal);border-color:var(--teal)}

/* ===================== 表单元素 ===================== */
.field{margin-bottom:16px}
.field label{
  display:block;font-size:13.5px;color:var(--muted);font-weight:600;margin-bottom:8px;
}
.field .req{color:var(--amber)}
.field input[type="text"],
.field input[type="tel"],
.field input[type="email"],
.field select,
.field textarea{
  width:100%;padding:13px 15px;border-radius:var(--radius-sm);
  background:rgba(7,10,15,.72);border:1px solid var(--line-strong);
  color:var(--text);transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
  -webkit-appearance:none;appearance:none;
}
.field select{
  background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);
  background-position:calc(100% - 20px) calc(50% - 2px),calc(100% - 14px) calc(50% - 2px);
  background-size:6px 6px,6px 6px;background-repeat:no-repeat;
}
.field option{background:#151D2A;color:var(--text)}
.field textarea{resize:vertical;min-height:88px;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--dim)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--teal);background:rgba(54,230,201,.05);
  box-shadow:0 0 0 3px rgba(54,230,201,.16);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:rgba(245,184,91,.75)}
.field .err-msg{display:none;margin-top:7px;font-size:12.5px;color:var(--amber)}
.field.has-error .err-msg{display:block}
.checkbox{
  display:flex;gap:11px;align-items:flex-start;
  font-size:13.5px;color:var(--muted);line-height:1.7;margin:6px 0 20px;cursor:pointer;
}
.checkbox input{
  width:18px;height:18px;margin-top:3px;flex:0 0 auto;accent-color:#36E6C9;cursor:pointer;
}
.checkbox a{color:var(--teal);border-bottom:1px dashed rgba(54,230,201,.5)}
.form-note{margin-top:14px;font-size:13px;color:var(--dim);min-height:20px}
.form-note.is-ok{color:var(--teal)}
.form-note.is-warn{color:var(--amber)}

/* ===================== 弹层 ===================== */
.modal{
  position:fixed;inset:0;z-index:120;display:none;
}
.modal.is-open{display:flex;align-items:center;justify-content:center;padding:24px}
.modal-mask{
  position:absolute;inset:0;background:rgba(3,6,10,.78);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  animation:fadeIn .24s ease;
}
.modal-card{
  position:relative;z-index:2;width:100%;max-width:600px;max-height:88vh;overflow-y:auto;
  background:linear-gradient(150deg,#161f2e,#101722);
  border:1px solid rgba(54,230,201,.22);
  border-radius:24px;padding:38px;
  box-shadow:0 40px 90px rgba(0,0,0,.7);
  animation:popIn .28s cubic-bezier(.2,.9,.3,1.2);
}
.modal-card .eyebrow{margin-bottom:12px}
.modal-card h3{font-size:24px;font-weight:800;line-height:1.35}
.modal-desc{margin-top:12px;color:var(--muted);font-size:14.5px;margin-bottom:24px}
.modal-close{
  position:absolute;top:16px;right:16px;width:40px;height:40px;border-radius:12px;
  border:1px solid var(--line-strong);color:var(--muted);display:grid;place-items:center;
  font-size:15px;transition:.22s ease;
}
.modal-close:hover{color:var(--teal);border-color:var(--teal);background:rgba(54,230,201,.08)}

@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes popIn{from{opacity:0;transform:scale(.94) translateY(12px)}to{opacity:1;transform:none}}

/* ===================== 移动端抽屉 ===================== */
.drawer{position:fixed;inset:0;z-index:110;display:none}
.drawer.is-open{display:block}
.drawer-mask{position:absolute;inset:0;background:rgba(3,6,10,.72)}
.drawer-panel{
  position:absolute;top:0;right:0;height:100%;width:min(330px,88vw);
  background:linear-gradient(180deg,#131b28,#0c121a);
  border-left:1px solid var(--line);
  padding:26px 22px;display:flex;flex-direction:column;gap:8px;
  animation:drawerIn .3s ease;
}
@keyframes drawerIn{from{transform:translateX(100%)}to{transform:none}}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-panel .nav-link{display:block;padding:14px 16px;font-size:16px;border-radius:12px}
.drawer-panel .nav-link.is-active::after{display:none}
.drawer-panel .nav-link.is-active{border-left:2px solid var(--teal)}
.drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--dim)}
.drawer-foot a{display:block;color:var(--muted);padding:6px 0}

/* ===================== 页脚 ===================== */
.site-footer{
  position:relative;background:linear-gradient(180deg,#0a0f16,#06090e);
  border-top:1px solid var(--line);margin-top:20px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(54,230,201,.6),rgba(123,97,255,.6),transparent);
}
.footer-top{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:48px;
  padding-top:76px;padding-bottom:56px;
}
.footer-brand .brand{margin-bottom:20px}
.footer-brand p{color:var(--muted);font-size:14.5px;max-width:400px;line-height:1.85}
.footer-col h4{
  font-size:14px;font-weight:700;letter-spacing:.08em;color:var(--text);margin-bottom:20px;
  text-transform:uppercase;
}
.footer-col ul{display:grid;gap:12px}
.footer-col a{color:var(--muted);font-size:14.5px}
.footer-col a:hover{color:var(--teal)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding-top:26px;padding-bottom:34px;
  border-top:1px solid var(--line);
  font-size:13.5px;color:var(--dim);
}
.back-top{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:999px;
  border:1px solid var(--line-strong);color:var(--muted);font-size:13.5px;
  transition:.22s ease;
}
.back-top:hover{color:var(--teal);border-color:var(--teal);transform:translateY(-2px)}

/* ===================== 入场动效 ===================== */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.is-visible{opacity:1;transform:none}

/* ===================== 响应式 ===================== */
@media screen and (max-width:1080px){
  :root{--section-y:96px}
  .main-nav{display:none}
  .nav-toggle{display:grid;place-items:center}
  .footer-top{grid-template-columns:1fr 1fr;gap:40px}
  .timeline{grid-template-columns:repeat(3,1fr);gap:32px 22px}
  .timeline::before{display:none}
  .media-row{gap:40px}
}
@media screen and (max-width:900px){
  .cta-panel{grid-template-columns:1fr;padding:40px 32px;gap:36px}
  .media-row{grid-template-columns:1fr}
  .media-row.is-reverse .media-text{order:0}
  .media-figure{order:-1}
}
@media screen and (max-width:768px){
  body{font-size:16px;line-height:1.8}
  :root{--section-y:76px}
  .container{padding:0 20px}
  .header-inner{height:68px}
  .brand-text{font-size:17px}
  .page-hero{padding:34px 0 76px}
  .page-hero .hero-sub{font-size:16px;margin-top:20px}
  .section-head{margin-bottom:44px}
  .timeline{grid-template-columns:1fr 1fr;gap:28px 18px}
  .timeline::before{display:none}
  .step-num{width:56px;height:56px;font-size:17px;margin-bottom:16px}
  .matrix-card{padding:26px 22px}
  .media-row + .media-row{margin-top:64px}
  .cta-panel{padding:34px 24px;border-radius:20px}
  .modal-card{padding:28px 22px;border-radius:20px}
  .footer-top{grid-template-columns:1fr;gap:34px;padding-top:56px;padding-bottom:40px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .hero-actions .btn{width:100%}
  .cta-actions .btn{width:100%}
}
@media screen and (max-width:520px){
  .page-hero h1{font-size:30px}
  .timeline{grid-template-columns:1fr}
  .stat-cell{padding:18px 6px}
  .badge{font-size:12px;padding:7px 13px}
  .accordion .accordion-title{font-size:15.5px;padding:18px 56px 18px 20px}
  .accordion .accordion-content{padding:0 20px 20px}
  .modal.is-open{padding:0}
  .modal-card{border-radius:0;max-height:100vh;height:100%}
}

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