/* roulang page: index */
:root{
  --c-bg-0:#070B14;
  --c-bg-1:#0C1424;
  --c-bg-2:#111C30;
  --c-brand-600:#14B79E;
  --c-brand-500:#2CE0C4;
  --c-brand-400:#5CF0DA;
  --c-accent-500:#7C5CFF;
  --c-metal-400:#C8B27A;
  --c-text-1:#EAF2FF;
  --c-text-2:#9FB0C9;
  --c-text-3:#6B7C99;
  --c-warn:#FFB020;
  --c-danger:#FF5C7A;
  --glow-sm:0 0 12px rgba(44,224,196,.28);
  --glow-md:0 0 24px rgba(44,224,196,.38);
  --glow-lg:0 0 48px rgba(44,224,196,.45);
  --sh-1:0 8px 24px rgba(3,8,20,.45);
  --sh-2:0 20px 60px rgba(3,8,20,.62);
  --c-border:rgba(255,255,255,.09);
  --c-border-strong:rgba(255,255,255,.16);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-badge:8px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text-2);
  background:var(--c-bg-0);
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-brand-400);text-decoration:none;transition:color .22s ease,border-color .22s ease,background-color .22s ease;}
a:hover{color:var(--c-brand-500);}
button,input{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-brand-500);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media (min-width:1400px){.container{max-width:1320px;}}
@media (min-width:768px){.container{padding-left:28px;padding-right:28px;}}

/* ---------- 通用排版 ---------- */
.sec-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.6px;color:var(--c-brand-400);
  font-weight:600;margin-bottom:14px;
}
.sec-tag::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--c-metal-400),var(--c-brand-500));}
h1,h2,h3,h4{color:var(--c-text-1);}
h1{font-size:clamp(30px,4.4vw,52px);line-height:1.2;font-weight:700;letter-spacing:.6px;}
h2{font-size:clamp(24px,2.6vw,36px);line-height:1.3;font-weight:600;letter-spacing:.5px;}
h3{font-size:21px;line-height:1.4;font-weight:600;}
h4{font-size:17px;font-weight:600;line-height:1.5;}
.sec-sub{font-size:16px;color:var(--c-text-2);max-width:720px;margin-top:14px;}
.sec-head{margin-bottom:40px;}

.section{padding:96px 0;position:relative;}
.section-alt{background:var(--c-bg-1);}
@media (max-width:991px){
  .section{padding:64px 0;}
  .sec-head{margin-bottom:28px;}
}
@media (max-width:575px){
  .section{padding:48px 0;}
}

.metal-divider{height:1px;border:0;background:linear-gradient(90deg,transparent,rgba(200,178,122,.65),transparent);margin:0;}

/* ---------- 按钮 ---------- */
.btn-main,.btn-ghost,.btn-text{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:44px;font-size:15px;font-weight:600;
  cursor:pointer;border:0;text-align:center;
  transition:transform .25s cubic-bezier(.2,.7,.3,1),box-shadow .25s cubic-bezier(.2,.7,.3,1),filter .25s ease,border-color .25s ease,background-color .25s ease,color .25s ease;
}
.btn-main{
  padding:12px 26px;border-radius:999px;color:#04141B;
  background:linear-gradient(135deg,var(--c-brand-500),var(--c-accent-500));
  box-shadow:var(--glow-sm);
}
.btn-main:hover{filter:brightness(1.06);box-shadow:var(--glow-md);transform:translateY(-1px);color:#04141B;}
.btn-main:active{transform:translateY(0);filter:brightness(.98);}
.btn-ghost{
  padding:12px 24px;border-radius:999px;color:var(--c-text-1);
  background:transparent;border:1px solid var(--c-border-strong);
}
.btn-ghost:hover{border-color:var(--c-brand-500);color:var(--c-brand-400);box-shadow:inset 0 0 18px rgba(44,224,196,.18);}
.btn-text{
  padding:8px 0;color:var(--c-brand-400);background:none;
  border-bottom:1px solid rgba(44,224,196,.45);padding-bottom:4px;
}
.btn-text:hover{color:var(--c-brand-500);border-color:var(--c-brand-500);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(7,11,20,.82);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,rgba(200,178,122,.75),rgba(44,224,196,.7) 45%,rgba(44,224,196,0));
}
.nav-bar{display:flex;align-items:center;gap:22px;min-height:72px;position:relative;}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,rgba(44,224,196,.22),rgba(124,92,255,.22));
  border:1px solid rgba(44,224,196,.42);
  box-shadow:var(--glow-sm);
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{color:var(--c-text-1);font-size:16px;font-weight:700;letter-spacing:.5px;}
.brand-text em{font-style:normal;font-size:12px;color:var(--c-text-3);letter-spacing:.4px;}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;display:block;padding:10px 14px;border-radius:10px;
  font-size:15px;color:var(--c-text-2);white-space:nowrap;
}
.nav-link:hover{color:var(--c-brand-400);background:rgba(44,224,196,.07);}
.nav-link.active{color:var(--c-brand-400);background:rgba(44,224,196,.09);}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--c-brand-500);box-shadow:var(--glow-sm);
}
.nav-cta{flex:0 0 auto;padding:10px 20px;font-size:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(255,255,255,.04);border:1px solid var(--c-border);
  align-items:center;justify-content:center;cursor:pointer;flex:0 0 auto;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-text-1);position:relative;border-radius:2px;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-text-1);border-radius:2px;
  transition:transform .25s ease;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

@media (max-width:991px){
  .nav-bar{min-height:64px;gap:12px;flex-wrap:wrap;}
  .nav-toggle{display:flex;margin-left:auto;}
  .nav-cta{display:none;}
  .nav-menu{
    display:none;position:absolute;left:-20px;right:-20px;top:100%;
    flex-direction:column;align-items:stretch;gap:2px;margin:0;
    padding:12px 20px 18px;
    background:rgba(7,11,20,.98);
    border-bottom:1px solid var(--c-border);
    box-shadow:var(--sh-2);
  }
  .nav-menu.open{display:flex;}
  .nav-link{padding:13px 14px;border-left:3px solid transparent;border-radius:0 10px 10px 0;}
  .nav-link.active{border-left-color:var(--c-brand-500);}
  .nav-link.active::after{display:none;}
}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:104px 0 92px;
  background-color:var(--c-bg-0);
  background-image:linear-gradient(180deg,rgba(7,11,20,.80),rgba(7,11,20,.94)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(135deg,rgba(200,178,122,.05) 0 1px,transparent 1px 7px);
}
.hero .container{position:relative;z-index:2;}
.hero h1{margin-bottom:20px;max-width:15em;}
.hero-sub{font-size:17px;line-height:1.9;color:var(--c-text-2);max-width:620px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:32px 0 26px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;}
.hero-badges li{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13px;color:var(--c-text-2);
  padding:7px 14px;border-radius:var(--r-badge);
  background:rgba(255,255,255,.04);border:1px solid var(--c-border);
}
.hero-badges li i{color:var(--c-brand-400);font-size:12px;}

.glass-card{
  position:relative;
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.09);
  border-radius:var(--r-lg);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-2);
}
.glass-card::before{
  content:"";position:absolute;left:24px;right:24px;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);
}
.entry-panel{padding:30px 28px 26px;}
.entry-panel h2{font-size:19px;font-weight:600;margin-bottom:6px;}
.entry-panel .panel-note{font-size:13px;color:var(--c-text-3);margin-bottom:22px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--c-text-2);margin-bottom:8px;}
.field label .dot{display:inline-block;width:5px;height:5px;border-radius:50%;background:var(--c-brand-500);margin-left:6px;vertical-align:middle;}
.field input{
  width:100%;height:46px;padding:0 14px;border-radius:var(--r-sm);
  background:var(--c-bg-2);border:1px solid var(--c-border);
  color:var(--c-text-1);font-size:15px;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.field input::placeholder{color:var(--c-text-3);}
.field input:focus{outline:none;border-color:var(--c-brand-500);box-shadow:var(--glow-sm);}
.panel-btn{width:100%;margin-top:6px;}
.panel-tip{
  display:flex;gap:9px;align-items:flex-start;
  margin-top:18px;padding-top:16px;border-top:1px solid var(--c-border);
  font-size:13px;line-height:1.7;color:var(--c-text-3);
}
.panel-tip i{color:var(--c-brand-400);margin-top:3px;}

@media (max-width:991px){
  .hero{padding:72px 0 64px;}
  .hero h1{max-width:100%;}
  .entry-panel{margin-top:34px;}
}
@media (max-width:575px){
  .hero{padding:56px 0 48px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;}
}

/* ---------- Bento 功能区 ---------- */
.bento-big{
  height:100%;
  background:var(--c-bg-1);
  border:1px solid var(--c-border);
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .25s cubic-bezier(.2,.7,.3,1),border-color .25s ease;
}
.bento-big:hover{transform:translateY(-4px);border-color:rgba(44,224,196,.4);}
.bento-big figure{margin:0;aspect-ratio:16/9;overflow:hidden;}
.bento-big figure img{width:100%;height:100%;object-fit:cover;transition:transform .4s cubic-bezier(.2,.7,.3,1);}
.bento-big:hover figure img{transform:scale(1.04);}
.bento-big .bento-body{padding:26px 26px 28px;}
.bento-big .bento-body p{margin-top:12px;font-size:15px;line-height:1.85;}
.bento-big .bento-body ul{margin-top:18px;display:grid;gap:9px;}
.bento-big .bento-body li,.mini-card li{position:relative;padding-left:18px;font-size:14px;color:var(--c-text-2);}
.bento-big .bento-body li::before,.mini-card li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;
  background:var(--c-brand-500);box-shadow:var(--glow-sm);
}
.mini-card{
  height:100%;
  background:var(--c-bg-1);
  border-left:3px solid var(--c-brand-500);
  border-top:1px solid var(--c-border);
  border-right:1px solid var(--c-border);
  border-bottom:1px solid var(--c-border);
  border-radius:0 var(--r-md) var(--r-md) 0;
  padding:26px 24px;
  transition:transform .25s cubic-bezier(.2,.7,.3,1),border-left-color .25s ease;
}
.mini-card:hover{transform:translateY(-4px);border-left-color:var(--c-brand-400);}
.mini-card .mini-icon{
  width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(44,224,196,.10);border:1px solid rgba(44,224,196,.28);
  color:var(--c-brand-400);font-size:18px;margin-bottom:16px;
}
.mini-card h3{font-size:19px;margin-bottom:10px;}
.mini-card p{font-size:15px;}
.mini-card ul{margin-top:16px;display:grid;gap:8px;}

/* ---------- 数据条 ---------- */
.stats-bar{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--c-bg-1);
  border:1px solid var(--c-border);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.stat-item{
  padding:30px 26px;
  position:relative;
}
.stat-item + .stat-item::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:1px;
  background:linear-gradient(180deg,transparent,rgba(200,178,122,.75),transparent);
}
.stat-k{font-size:13px;color:var(--c-text-3);letter-spacing:.6px;margin-bottom:10px;}
.stat-v{font-size:19px;font-weight:600;color:var(--c-text-1);letter-spacing:.4px;}
.stat-v em{font-style:normal;color:var(--c-brand-400);text-shadow:var(--glow-sm);}
@media (max-width:767px){
  .stats-bar{grid-template-columns:repeat(2,1fr);}
  .stat-item{padding:22px 18px;}
  .stat-item + .stat-item::before{display:none;}
  .stat-item:nth-child(even)::after{
    content:"";position:absolute;left:0;top:18px;bottom:18px;width:1px;
    background:linear-gradient(180deg,transparent,rgba(200,178,122,.5),transparent);
  }
  .stat-v{font-size:16px;}
}

/* ---------- 场景（案例）区 ---------- */
.case-block{
  background:var(--c-bg-1);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
  height:100%;
  transition:transform .25s cubic-bezier(.2,.7,.3,1),border-color .25s ease;
}
.case-block:hover{transform:translateY(-4px);border-color:rgba(44,224,196,.35);}
.case-media{aspect-ratio:16/10;overflow:hidden;}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s cubic-bezier(.2,.7,.3,1);}
.case-block:hover .case-media img{transform:scale(1.04);}
.case-body{padding:28px 26px 30px;}
.case-body p{margin-top:12px;font-size:15px;line-height:1.85;}
.chip{
  display:inline-block;font-size:13px;color:var(--c-brand-400);
  padding:5px 12px;border-radius:var(--r-badge);
  border:1px solid rgba(44,224,196,.32);
  background:rgba(44,224,196,.08);
  margin-bottom:14px;
}
.chip-metal{color:var(--c-metal-400);border-color:rgba(200,178,122,.35);background:rgba(200,178,122,.08);}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding-left:34px;}
.timeline::before{
  content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--c-brand-500),rgba(44,224,196,0));
}
.tl-item{position:relative;padding-bottom:34px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-30px;top:8px;width:12px;height:12px;border-radius:50%;
  background:var(--c-bg-0);border:2px solid var(--c-brand-500);box-shadow:var(--glow-sm);
}
.tl-item h3{font-size:18px;margin-bottom:8px;}
.tl-item .tl-idx{font-size:13px;color:var(--c-metal-400);letter-spacing:1px;display:block;margin-bottom:6px;}
.tl-item p{font-size:15px;}
.tl-side{
  background:var(--c-bg-1);
  border:1px solid var(--c-border);
  border-radius:var(--r-md);
  padding:28px 26px;
  box-shadow:var(--sh-1);
  height:100%;
}
.tl-side h3{font-size:19px;margin-bottom:14px;}
.tl-side ul{display:grid;gap:12px;}
.tl-side li{position:relative;padding-left:20px;font-size:15px;}
.tl-side li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;
  border-radius:2px;background:var(--c-metal-400);opacity:.85;
}

/* ---------- 资讯区 ---------- */
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.post-card{
  display:block;height:100%;overflow:hidden;
  background:var(--c-bg-1);
  border:1px solid var(--c-border);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  transition:transform .25s cubic-bezier(.2,.7,.3,1),border-color .25s ease;
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(44,224,196,.4);}
.post-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--c-bg-2);}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s cubic-bezier(.2,.7,.3,1);}
.post-card:hover .post-thumb img{transform:scale(1.04);}
.post-body{padding:20px 20px 22px;}
.post-cat{
  display:inline-block;font-size:12px;color:var(--c-brand-400);
  background:rgba(44,224,196,.09);border:1px solid rgba(44,224,196,.28);
  padding:3px 10px;border-radius:var(--r-badge);margin-bottom:12px;
}
.post-title{
  font-size:17px;font-weight:600;color:var(--c-text-1);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:10px;
}
.post-sum{
  font-size:14px;color:var(--c-text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{margin-top:14px;font-size:13px;color:var(--c-text-3);padding-top:14px;border-top:1px solid var(--c-border);}
.empty-state{
  text-align:center;padding:56px 24px;
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  color:var(--c-text-2);font-size:15px;
}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:900px;}
.faq-item{
  background:var(--c-bg-1);
  border:1px solid var(--c-border);
  border-radius:var(--r-sm);
  overflow:hidden;
  transition:border-color .25s ease,background-color .25s ease;
}
.faq-item.open{border-color:rgba(44,224,196,.42);background:#0E1830;box-shadow:inset 3px 0 0 var(--c-brand-500),var(--glow-sm);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:none;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--c-text-1);line-height:1.5;
  min-height:44px;
}
.faq-q .faq-arrow{
  flex:0 0 auto;width:20px;height:20px;position:relative;
  transition:transform .28s cubic-bezier(.2,.7,.3,1);
}
.faq-q .faq-arrow::before,.faq-q .faq-arrow::after{
  content:"";position:absolute;top:50%;width:11px;height:2px;background:var(--c-brand-400);border-radius:2px;
}
.faq-q .faq-arrow::before{left:0;transform:rotate(45deg);}
.faq-q .faq-arrow::after{right:0;transform:rotate(-45deg);}
.faq-item.open .faq-arrow{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s cubic-bezier(.2,.7,.3,1);}
.faq-a p{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--c-text-2);}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  padding:52px 44px;
  background-color:var(--c-bg-1);
  background-image:linear-gradient(120deg,rgba(7,11,20,.92),rgba(12,20,36,.86)),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  border:1px solid var(--c-border);
  box-shadow:var(--sh-2);
}
.cta-panel::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(135deg,rgba(200,178,122,.05) 0 1px,transparent 1px 7px);
}
.cta-panel .cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-panel h2{font-size:clamp(22px,2.4vw,30px);}
.cta-panel p{margin-top:12px;font-size:15px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
@media (max-width:767px){
  .cta-panel{padding:36px 24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-main,.cta-actions .btn-ghost{width:100%;}
}

/* ---------- 导航卡（相关分类） ---------- */
.cat-card{
  display:block;height:100%;
  background:var(--c-bg-1);
  border:1px solid var(--c-border);
  border-top:2px solid transparent;
  border-radius:var(--r-md);
  padding:24px 22px;
  box-shadow:var(--sh-1);
  transition:transform .25s cubic-bezier(.2,.7,.3,1),border-color .25s ease;
}
.cat-card:hover{transform:translateY(-4px);border-top-color:var(--c-brand-500);}
.cat-card h3{font-size:18px;margin-bottom:10px;}
.cat-card p{font-size:14px;}
.cat-card .cat-go{margin-top:16px;display:inline-flex;align-items:center;gap:7px;font-size:14px;color:var(--c-brand-400);}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--c-bg-0);
  padding:0 0 30px;
  border-top:1px solid var(--c-border);
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(200,178,122,.7),rgba(44,224,196,.5),transparent);
}
.footer-top{padding:64px 0 44px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand strong{color:var(--c-text-1);font-size:16px;letter-spacing:.5px;}
.footer-desc{font-size:14px;line-height:1.85;color:var(--c-text-2);max-width:330px;}
.footer-title{font-size:15px;font-weight:600;color:var(--c-text-1);margin-bottom:16px;}
.footer-links{display:grid;gap:10px;}
.footer-links a{font-size:14px;color:var(--c-text-2);}
.footer-links a:hover{color:var(--c-brand-400);}
.footer-info{display:grid;gap:12px;}
.footer-info li{display:flex;gap:10px;font-size:14px;color:var(--c-text-2);line-height:1.7;}
.footer-info i{color:var(--c-brand-400);margin-top:5px;font-size:13px;}
.footer-divider{height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.12),transparent);}
.footer-bottom{
  padding-top:22px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--c-text-3);line-height:1.8;
}
@media (max-width:991px){
  .footer-top{padding:48px 0 30px;}
  .footer-desc{max-width:100%;}
}
@media (max-width:575px){
  .footer-bottom{flex-direction:column;}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-property:color,background-color,border-color,box-shadow !important;}
  .bento-big:hover,.mini-card:hover,.case-block:hover,.post-card:hover,.cat-card:hover{transform:none;}
  .bento-big:hover figure img,.case-block:hover .case-media img,.post-card:hover .post-thumb img{transform:none;}
}

/* roulang page: article */
:root{
  --c-bg-0:#070B14;
  --c-bg-1:#0C1424;
  --c-bg-2:#111C30;
  --c-brand-600:#14B79E;
  --c-brand-500:#2CE0C4;
  --c-brand-400:#5CF0DA;
  --c-accent-500:#7C5CFF;
  --c-metal-400:#C8B27A;
  --c-text-1:#EAF2FF;
  --c-text-2:#9FB0C9;
  --c-text-3:#6B7C99;
  --c-warn:#FFB020;
  --c-danger:#FF5C7A;
  --c-line:rgba(255,255,255,.09);
  --c-line-strong:rgba(255,255,255,.16);
  --c-glass:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  --glow-sm:0 0 12px rgba(44,224,196,.28);
  --glow-md:0 0 24px rgba(44,224,196,.38);
  --glow-lg:0 0 48px rgba(44,224,196,.45);
  --sh-1:0 8px 24px rgba(3,8,20,.45);
  --sh-2:0 20px 60px rgba(3,8,20,.62);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-badge:8px;
  --gap-section:96px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg-0);
  color:var(--c-text-2);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-brand-400);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-brand-500);}
h1,h2,h3,h4,h5{color:var(--c-text-1);margin:0;letter-spacing:.5px;font-weight:600;}
p{margin:0 0 1.2em;}
ul,ol{margin:0;padding:0;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--c-brand-500);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
@media (min-width:1440px){.container{max-width:1320px;}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(7,11,20,.82);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--c-metal-400),var(--c-brand-500),transparent);
  opacity:.7;
}
.nav-bar{
  display:flex;
  align-items:center;
  gap:28px;
  height:78px;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
  text-decoration:none;
}
.brand-mark{
  width:40px;height:40px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:var(--r-sm);
  background:var(--c-glass);
  border:1px solid var(--c-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.brand-mark svg{width:24px;height:24px;display:block;}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{color:var(--c-text-1);font-size:17px;letter-spacing:.6px;font-weight:700;}
.brand-text em{font-style:normal;font-size:12px;color:var(--c-text-3);letter-spacing:.4px;}
.nav-menu{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 14px;
  font-size:15px;
  color:var(--c-text-2);
  border-radius:var(--r-sm);
  white-space:nowrap;
  transition:color .2s ease,background-color .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:8px;height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--c-brand-500),var(--c-brand-400));
  opacity:0;
  box-shadow:var(--glow-sm);
  transition:opacity .22s ease;
}
.nav-link:hover,.nav-link:focus-visible{
  color:var(--c-brand-400);
  background:rgba(44,224,196,.07);
}
.nav-link:hover::after{opacity:.7;}
.nav-link.active{
  color:var(--c-brand-400);
  background:rgba(44,224,196,.09);
}
.nav-link.active::after{opacity:1;}
.btn-main{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:11px 26px;
  border:0;
  border-radius:999px;
  background:linear-gradient(135deg,var(--c-brand-500),var(--c-accent-500));
  color:#06121C;
  font-size:15px;
  font-weight:700;
  letter-spacing:.4px;
  text-decoration:none;
  box-shadow:var(--glow-sm);
  transition:transform .25s cubic-bezier(.2,.7,.3,1),box-shadow .25s ease,filter .25s ease;
}
.btn-main:hover,.btn-main:focus-visible{
  color:#06121C;
  filter:brightness(1.06);
  box-shadow:var(--glow-md);
  transform:translateY(-1px);
}
.btn-main:active{transform:translateY(0);}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:11px 24px;
  border-radius:999px;
  border:1px solid var(--c-line-strong);
  background:transparent;
  color:var(--c-text-1);
  font-size:15px;
  font-weight:600;
  text-decoration:none;
  transition:border-color .25s ease,box-shadow .25s ease,color .25s ease;
}
.btn-ghost:hover,.btn-ghost:focus-visible{
  color:var(--c-brand-400);
  border-color:var(--c-brand-500);
  box-shadow:inset 0 0 14px rgba(44,224,196,.18);
}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--c-brand-400);
  font-size:15px;
  font-weight:600;
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,color .2s ease;
}
.btn-text:hover{border-bottom-color:var(--c-brand-400);}
.nav-cta{padding:10px 22px;font-size:14px;}
.nav-toggle{
  display:none;
  margin-left:auto;
  width:44px;height:44px;
  position:relative;
  background:transparent;
  border:1px solid var(--c-line-strong);
  border-radius:var(--r-sm);
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:50%;
  width:18px;height:2px;
  border-radius:2px;
  background:var(--c-brand-400);
  transform:translateX(-50%);
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:rotate(45deg);top:0;}
.nav-toggle[aria-expanded="true"] span::after{transform:rotate(-45deg);top:0;}

/* ============ 文章头 ============ */
.article-hero{
  position:relative;
  overflow:hidden;
  padding:52px 0 56px;
  background-image:linear-gradient(180deg,rgba(7,11,20,.86),rgba(7,11,20,.96)),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
}
.article-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(200,178,122,.05) 0 1px,transparent 1px 8px);
  pointer-events:none;
}
.article-hero .container{position:relative;z-index:2;}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--c-text-3);
  margin-bottom:26px;
}
.crumbs a{color:var(--c-text-3);}
.crumbs a:hover{color:var(--c-brand-400);}
.crumbs .sep{color:rgba(255,255,255,.18);}
.crumbs .current{
  color:var(--c-text-2);
  max-width:320px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.hero-inner{max-width:880px;}
.cat-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--r-badge);
  font-size:13px;
  letter-spacing:.4px;
  color:var(--c-brand-400);
  background:rgba(44,224,196,.1);
  border:1px solid rgba(44,224,196,.28);
}
.cat-badge::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--c-brand-500);
  box-shadow:var(--glow-sm);
}
.article-hero h1{
  margin:22px 0 20px;
  font-size:clamp(26px,3.4vw,42px);
  line-height:1.28;
  font-weight:700;
  letter-spacing:.7px;
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  font-size:14px;
  color:var(--c-text-3);
}
.meta-row .meta-item{display:inline-flex;align-items:center;gap:7px;}
.meta-row i{color:var(--c-brand-600);font-size:13px;}
.title-divider{
  margin-top:30px;
  height:1px;
  width:100%;
  background:linear-gradient(90deg,var(--c-brand-500),rgba(124,92,255,.55) 42%,rgba(255,255,255,0) 100%);
  opacity:.85;
}

/* ============ 主体布局 ============ */
.section-main{
  padding-top:64px;
  padding-bottom:var(--gap-section);
}
.article-card{
  background:var(--c-bg-1);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:40px 44px 48px;
  box-shadow:var(--sh-1);
}
.article-body{
  max-width:780px;
  font-size:17px;
  line-height:1.9;
  color:var(--c-text-2);
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;
  margin:2.2em 0 .9em;
  padding-left:18px;
  font-size:clamp(21px,2.3vw,26px);
  line-height:1.4;
  color:var(--c-text-1);
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:.34em;
  width:4px;height:1.05em;
  border-radius:2px;
  background:linear-gradient(180deg,var(--c-brand-400),var(--c-brand-600));
  box-shadow:var(--glow-sm);
}
.article-body h3{
  margin:1.8em 0 .7em;
  font-size:20px;
  line-height:1.45;
  color:var(--c-text-1);
}
.article-body h4{
  margin:1.5em 0 .6em;
  font-size:17px;
  color:var(--c-text-1);
}
.article-body a{
  color:var(--c-brand-400);
  border-bottom:1px solid rgba(92,240,218,.35);
  text-underline-offset:3px;
}
.article-body a:hover{border-bottom-color:var(--c-brand-400);}
.article-body strong{color:var(--c-text-1);}
.article-body ul,.article-body ol{
  margin:0 0 1.3em;
  padding-left:1.3em;
}
.article-body li{margin-bottom:.55em;}
.article-body ul li::marker{color:var(--c-brand-500);}
.article-body ol li::marker{color:var(--c-brand-500);font-weight:600;}
.article-body blockquote{
  margin:1.6em 0;
  padding:20px 22px;
  border-left:3px solid var(--c-brand-500);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  background:var(--c-glass);
  border-top:1px solid var(--c-line);
  border-right:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);
  color:var(--c-text-1);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  border-radius:var(--r-sm);
  margin:1.4em auto;
}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{
  margin-top:10px;
  text-align:center;
  font-size:13px;
  color:var(--c-text-3);
}
.article-body table{
  width:100%;
  margin:1.6em 0;
  border-collapse:collapse;
  font-size:15px;
  background:var(--c-bg-2);
  border:1px solid var(--c-line);
  border-radius:var(--r-sm);
  overflow:hidden;
}
.article-body th,.article-body td{
  padding:12px 16px;
  border-bottom:1px solid var(--c-line);
  text-align:left;
}
.article-body th{
  color:var(--c-text-1);
  font-weight:600;
  background:rgba(255,255,255,.03);
}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.02);}
.article-body tbody tr:last-child td{border-bottom:0;}
.article-body hr{
  border:0;height:1px;margin:2.2em 0;
  background:linear-gradient(90deg,rgba(200,178,122,.5),rgba(255,255,255,0));
}

/* 空态 */
.empty-state{
  max-width:780px;
  text-align:center;
  padding:56px 32px;
  border-radius:var(--r-lg);
  background:var(--c-glass);
  border:1px solid var(--c-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-1);
}
.empty-state .empty-icon{
  width:56px;height:56px;
  margin:0 auto 20px;
  border-radius:var(--r-md);
  display:flex;align-items:center;justify-content:center;
  background:rgba(44,224,196,.1);
  border:1px solid rgba(44,224,196,.26);
  color:var(--c-brand-400);
  font-size:22px;
}
.empty-state h2{font-size:22px;margin-bottom:12px;}
.empty-state p{color:var(--c-text-3);max-width:480px;margin:0 auto 24px;}

/* ============ 侧栏 ============ */
.side-col{position:relative;}
.side-sticky{position:sticky;top:104px;display:flex;flex-direction:column;gap:24px;}
.side-box{
  border-radius:var(--r-md);
  background:var(--c-bg-1);
  border:1px solid var(--c-line);
  padding:24px;
  box-shadow:var(--sh-1);
}
.side-box.glass{
  background:var(--c-glass);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-1);
}
.side-title{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:16px;
  color:var(--c-text-1);
  margin-bottom:16px;
}
.side-title::before{
  content:"";
  width:3px;height:15px;
  border-radius:2px;
  background:linear-gradient(180deg,var(--c-brand-400),var(--c-brand-600));
  box-shadow:var(--glow-sm);
}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:9px 10px;
  border-radius:var(--r-sm);
  font-size:14px;
  color:var(--c-text-2);
  transition:background-color .2s ease,color .2s ease,padding-left .2s ease;
}
.toc-list a:hover{
  color:var(--c-brand-400);
  background:rgba(44,224,196,.08);
  padding-left:14px;
}
.toc-list i{font-size:11px;color:var(--c-brand-600);}
.rec-list{display:flex;flex-direction:column;gap:14px;}
.rec-item{
  display:flex;
  gap:12px;
  padding:12px;
  border-radius:var(--r-sm);
  border:1px solid var(--c-line);
  background:var(--c-bg-2);
  transition:transform .25s ease,border-color .25s ease;
}
.rec-item:hover{
  transform:translateY(-3px);
  border-color:rgba(44,224,196,.4);
}
.rec-item img{
  width:78px;height:56px;
  object-fit:cover;
  border-radius:8px;
  flex-shrink:0;
}
.rec-item .rec-title{
  font-size:14px;
  line-height:1.55;
  color:var(--c-text-1);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rec-item .rec-meta{font-size:12px;color:var(--c-text-3);margin-top:6px;}
.side-note{
  font-size:14px;
  color:var(--c-text-3);
  line-height:1.8;
}
.side-note strong{color:var(--c-text-1);}
.side-cta{margin-top:16px;width:100%;}

/* ============ 文末 ============ */
.related-wrap{
  margin-top:56px;
  padding-top:40px;
  border-top:1px solid var(--c-line);
}
.block-label{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:13px;
  letter-spacing:.6px;
  color:var(--c-brand-400);
  margin-bottom:12px;
}
.block-label::before{
  content:"";
  width:18px;height:1px;
  background:linear-gradient(90deg,var(--c-metal-400),var(--c-brand-500));
}
.related-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:26px;
}
.related-head h2{font-size:clamp(20px,2.2vw,26px);}
.related-head p{font-size:14px;color:var(--c-text-3);margin:6px 0 0;}
.rel-scroll{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.rel-card{
  display:flex;
  flex-direction:column;
  overflow:hidden;
  border-radius:var(--r-md);
  background:var(--c-bg-2);
  border:1px solid var(--c-line);
  transition:transform .25s ease,border-color .25s ease;
}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(44,224,196,.4);}
.rel-card .rel-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
}
.rel-card .rel-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.rel-card:hover .rel-thumb img{transform:scale(1.04);}
.rel-card .rel-thumb::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,0) 40%,rgba(7,11,20,.78) 100%);
}
.rel-body{padding:18px 18px 20px;}
.rel-tag{
  display:inline-block;
  font-size:12px;
  padding:3px 10px;
  border-radius:var(--r-badge);
  color:var(--c-brand-400);
  background:rgba(44,224,196,.1);
  border:1px solid rgba(44,224,196,.24);
  margin-bottom:12px;
}
.rel-body h3{
  font-size:16px;
  line-height:1.55;
  margin-bottom:10px;
}
.rel-body p{
  font-size:14px;
  color:var(--c-text-3);
  line-height:1.75;
  margin:0;
}

.post-nav{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:18px;
  margin-top:40px;
}
.post-nav a{
  display:block;
  padding:20px 22px;
  border-radius:var(--r-md);
  background:var(--c-bg-1);
  border:1px solid var(--c-line);
  transition:border-color .25s ease,transform .25s ease;
}
.post-nav a:hover{transform:translateY(-3px);border-color:rgba(44,224,196,.42);}
.post-nav .pn-label{
  display:block;
  font-size:13px;
  color:var(--c-text-3);
  margin-bottom:8px;
}
.post-nav .pn-text{
  font-size:15px;
  color:var(--c-text-1);
  line-height:1.6;
}
.post-nav .pn-right{text-align:right;}
.back-row{
  display:flex;
  justify-content:center;
  margin-top:40px;
}

/* 相关分类跳转 */
.cat-jump{
  padding:0 0 var(--gap-section);
}
.cat-jump-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:22px;
}
.jump-card{
  display:block;
  padding:28px 26px;
  border-radius:var(--r-lg);
  background:var(--c-bg-1);
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  transition:transform .25s ease,border-color .25s ease;
}
.jump-card:hover{transform:translateY(-4px);border-color:rgba(44,224,196,.44);}
.jump-card .jump-num{
  font-size:13px;
  letter-spacing:2px;
  color:var(--c-metal-400);
  margin-bottom:16px;
}
.jump-card h3{font-size:18px;margin-bottom:12px;}
.jump-card p{font-size:14px;color:var(--c-text-3);margin:0 0 18px;}
.jump-card .jump-more{
  font-size:14px;
  color:var(--c-brand-400);
  font-weight:600;
}
.jump-card.accent-left{
  border-left:3px solid var(--c-brand-500);
}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:var(--c-bg-1);
  padding:72px 0 30px;
  margin-top:20px;
}
.site-footer::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--c-metal-400),var(--c-brand-500),transparent);
  opacity:.8;
}
.site-footer::after{
  content:"";
  position:absolute;
  left:0;right:0;top:0;height:120px;
  background-image:repeating-linear-gradient(115deg,rgba(200,178,122,.045) 0 1px,transparent 1px 9px);
  pointer-events:none;
}
.site-footer .container{position:relative;z-index:2;}
.footer-brand{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:18px;
}
.footer-brand strong{color:var(--c-text-1);font-size:18px;letter-spacing:.6px;}
.footer-desc{font-size:14px;color:var(--c-text-3);line-height:1.85;max-width:340px;margin:0;}
.footer-title{
  font-size:15px;
  color:var(--c-text-1);
  margin-bottom:18px;
  letter-spacing:.5px;
}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:var(--c-text-2);}
.footer-links a:hover{color:var(--c-brand-400);}
.footer-info{list-style:none;display:flex;flex-direction:column;gap:12px;}
.footer-info li{
  display:flex;
  gap:10px;
  font-size:14px;
  color:var(--c-text-2);
  line-height:1.7;
}
.footer-info i{color:var(--c-brand-600);font-size:14px;margin-top:5px;}
.footer-divider{
  height:1px;
  margin:44px 0 22px;
  background:linear-gradient(90deg,rgba(255,255,255,0),var(--c-line-strong),rgba(255,255,255,0));
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px 24px;
  font-size:13px;
  color:var(--c-text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .nav-bar{gap:16px;}
  .nav-link{padding:0 10px;font-size:14px;}
  .nav-link::after{left:10px;right:10px;}
}
@media (max-width:991px){
  :root{--gap-section:64px;}
  .nav-toggle{display:block;}
  .nav-menu{
    position:absolute;
    left:0;right:0;
    top:78px;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    margin-left:0;
    padding:16px 20px 22px;
    background:rgba(7,11,20,.97);
    border-bottom:1px solid var(--c-line);
    box-shadow:var(--sh-2);
    display:none;
  }
  .nav-menu.open{display:flex;}
  .nav-link{padding:12px 14px;min-height:48px;}
  .nav-link::after{
    left:0;top:10px;bottom:10px;right:auto;
    width:3px;height:auto;
    background:linear-gradient(180deg,var(--c-brand-400),var(--c-brand-600));
  }
  .nav-cta{margin-top:12px;width:100%;}
  .side-sticky{position:static;}
  .article-card{padding:30px 26px 36px;}
  .rel-scroll{grid-template-columns:repeat(3,minmax(200px,1fr));overflow-x:auto;padding-bottom:8px;}
  .cat-jump-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:767px){
  :root{--gap-section:48px;}
  .container{padding-left:20px;padding-right:20px;}
  .article-hero{padding:36px 0 42px;}
  .hero-inner{max-width:100%;}
  .article-card{padding:24px 20px 30px;border-radius:var(--r-md);}
  .article-body{font-size:16px;}
  .crumbs .current{max-width:180px;}
  .related-head{flex-direction:column;align-items:flex-start;}
  .post-nav{grid-template-columns:1fr;}
  .post-nav .pn-right{text-align:left;}
  .cat-jump-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .brand-text em{display:none;}
}
@media (max-width:575px){
  .btn-main,.btn-ghost{width:100%;}
  .article-body table{font-size:14px;}
  .article-body th,.article-body td{padding:10px 12px;}
  .side-box{padding:20px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
  }
  .rel-card:hover,.jump-card:hover,.rec-item:hover,.btn-main:hover{transform:none;}
  .rel-card:hover .rel-thumb img{transform:none;}
  .btn-main:hover{box-shadow:var(--glow-sm);}
}

/* roulang page: category1 */
:root{
  --c-bg-0:#070B14;
  --c-bg-1:#0C1424;
  --c-bg-2:#111C30;
  --c-brand-600:#14B79E;
  --c-brand-500:#2CE0C4;
  --c-brand-400:#5CF0DA;
  --c-accent-500:#7C5CFF;
  --c-metal-400:#C8B27A;
  --c-text-1:#EAF2FF;
  --c-text-2:#9FB0C9;
  --c-text-3:#6B7C99;
  --c-warn:#FFB020;
  --c-error:#FF5C7A;
  --glow-sm:0 0 12px rgba(44,224,196,.28);
  --glow-md:0 0 24px rgba(44,224,196,.38);
  --glow-lg:0 0 48px rgba(44,224,196,.45);
  --sh-1:0 8px 24px rgba(3,8,20,.45);
  --sh-2:0 20px 60px rgba(3,8,20,.62);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-badge:8px;
  --line:rgba(255,255,255,.09);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg-0);
  color:var(--c-text-2);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-brand-400);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-brand-500)}
h1,h2,h3,h4{color:var(--c-text-1);margin:0;font-weight:600;letter-spacing:.6px}
p{margin:0 0 1.2em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-brand-500);outline-offset:3px;border-radius:6px}
.container{max-width:1200px;padding-left:20px;padding-right:20px;margin:0 auto}
@media (min-width:1400px){.container{max-width:1320px}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(7,11,20,.82);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,rgba(200,178,122,0),var(--c-metal-400) 18%,var(--c-brand-500) 62%,rgba(44,224,196,0));
  opacity:.7;
}
.nav-bar{display:flex;align-items:center;gap:28px;min-height:74px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  border:1px solid rgba(44,224,196,.28);
  box-shadow:var(--glow-sm);
}
.brand-mark svg{width:26px;height:26px}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{color:var(--c-text-1);font-size:17px;font-weight:700;letter-spacing:.8px}
.brand-text em{font-style:normal;font-size:12px;color:var(--c-text-3);letter-spacing:.4px}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;padding:10px 14px;border-radius:10px;
  font-size:15px;color:var(--c-text-2);transition:color .22s ease,background .22s ease;
}
.nav-link:hover{color:var(--c-brand-400);background:rgba(44,224,196,.06)}
.nav-link.active{color:var(--c-brand-400);background:rgba(44,224,196,.08);box-shadow:inset 0 0 0 1px rgba(44,224,196,.18)}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--c-brand-500);box-shadow:var(--glow-sm);
}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 24px;border-radius:999px;border:0;
  font-size:15px;font-weight:600;color:#04140F;
  background:linear-gradient(135deg,var(--c-brand-500),var(--c-accent-500) 130%);
  box-shadow:var(--glow-sm);
  transition:transform .25s cubic-bezier(.2,.7,.3,1),box-shadow .25s ease,filter .25s ease;
  cursor:pointer;
}
.btn-main:hover{color:#04140F;filter:brightness(1.06);box-shadow:var(--glow-md);transform:translateY(-1px)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 24px;border-radius:999px;
  border:1px solid rgba(255,255,255,.18);background:transparent;
  color:var(--c-text-1);font-size:15px;font-weight:600;
  transition:border-color .25s ease,box-shadow .25s ease,color .25s ease,transform .25s cubic-bezier(.2,.7,.3,1);
}
.btn-ghost:hover{color:var(--c-brand-400);border-color:var(--c-brand-500);box-shadow:inset 0 0 18px rgba(44,224,196,.18);transform:translateY(-1px)}
.nav-cta{flex-shrink:0}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  margin-left:auto;position:relative;cursor:pointer;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;border-radius:2px;
  background:var(--c-brand-400);transform:translateX(-50%);
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{content:"";left:0;transform:none;top:-6px}
.nav-toggle span::after{content:"";left:0;transform:none;top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:rotate(45deg);top:0}
.nav-toggle[aria-expanded="true"] span::after{transform:rotate(-45deg);top:0}

@media (max-width:991px){
  .nav-toggle{display:block}
  .nav-menu{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:2px;
    padding:14px 20px 18px;
    background:rgba(9,14,26,.98);
    border-bottom:1px solid var(--line);
    box-shadow:var(--sh-2);
    display:none;
  }
  .nav-menu.open{display:flex}
  .nav-link{padding:13px 12px;border-left:3px solid transparent;border-radius:8px}
  .nav-link.active{border-left-color:var(--c-brand-500)}
  .nav-link.active::after{display:none}
  .nav-cta{display:none}
}

/* ============ 面包屑 & 页头 ============ */
.page-hero{
  position:relative;
  padding:74px 0 78px;
  background-color:var(--c-bg-1);
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(7,11,20,.86) 0%,rgba(7,11,20,.94) 60%,var(--c-bg-0) 100%),
    repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 1px,transparent 1px 9px);
  opacity:1;
}
.page-hero > .container{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--c-text-3);margin-bottom:26px}
.crumb a{color:var(--c-text-2)}
.crumb a:hover{color:var(--c-brand-400)}
.crumb .sep{color:rgba(200,178,122,.6)}
.crumb .cur{color:var(--c-brand-400)}
.sec-label{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:1.4px;color:var(--c-brand-400);
  margin-bottom:16px;
}
.sec-label::before{content:"";width:26px;height:1px;background:linear-gradient(90deg,var(--c-metal-400),var(--c-brand-500))}
.page-hero h1{
  font-size:clamp(30px,4.4vw,48px);
  line-height:1.22;font-weight:700;letter-spacing:.9px;
  max-width:900px;
}
.hero-lead{max-width:760px;margin:20px 0 26px;font-size:17px;color:var(--c-text-2)}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:var(--r-badge);
  font-size:13px;color:var(--c-text-2);
  background:rgba(17,28,48,.78);border:1px solid var(--line);
}
.chip i{color:var(--c-brand-400);font-size:12px}

/* ============ 板块骨架 ============ */
.section{padding:96px 0}
.section.tight{padding:70px 0}
.section.alt{background:var(--c-bg-1)}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3}
.sec-head .sec-sub{margin-top:12px;font-size:15px;color:var(--c-text-3)}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head.center .sec-label{justify-content:center}

/* ============ 步骤流 ============ */
.step-wrap{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:start}
.step-list{position:relative}
.step-item{position:relative;padding:0 0 34px 78px}
.step-item:last-child{padding-bottom:0}
.step-item::before{
  content:"";position:absolute;left:23px;top:52px;bottom:2px;width:2px;
  background:linear-gradient(180deg,rgba(44,224,196,.55),rgba(44,224,196,0));
}
.step-item:last-child::before{display:none}
.step-num{
  position:absolute;left:0;top:0;width:48px;height:48px;border-radius:14px;
  display:grid;place-items:center;
  font-size:17px;font-weight:700;color:var(--c-brand-400);
  font-variant-numeric:tabular-nums;
  background:var(--c-bg-2);
  border:1px solid rgba(44,224,196,.34);
  box-shadow:var(--glow-sm);
}
.step-item h3{font-size:20px;margin-bottom:8px;line-height:1.4}
.step-item p{margin:0 0 10px;font-size:15px;color:var(--c-text-2)}
.step-tag{
  display:inline-block;padding:4px 10px;border-radius:var(--r-badge);
  font-size:12px;color:var(--c-brand-400);
  background:rgba(44,224,196,.1);border:1px solid rgba(44,224,196,.22);
}
.note-stack{display:grid;gap:18px}
.note-card{
  padding:24px 24px 22px;border-radius:var(--r-md);
  background:var(--c-bg-1);border:1px solid var(--line);
  border-left:3px solid var(--c-brand-500);
  box-shadow:var(--sh-1);
}
.note-card h3{font-size:17px;margin-bottom:10px}
.note-card p{margin:0;font-size:14.5px;color:var(--c-text-2)}
.note-card.glass{
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);
  border-left:1px solid var(--line);
  border-top-color:rgba(255,255,255,.16);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.note-card.glass h3{color:var(--c-brand-400)}

/* ============ 双路径对比 ============ */
.path-grid{display:grid;grid-template-columns:7fr 5fr;gap:26px;align-items:stretch}
.path-main{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  background:var(--c-bg-1);border:1px solid var(--line);box-shadow:var(--sh-1);
}
.path-main img{width:100%;height:230px;object-fit:cover;opacity:.82}
.path-main .path-body{padding:28px 30px 30px}
.path-main h3{font-size:22px;margin-bottom:12px}
.path-main p{font-size:15px;margin-bottom:16px}
.path-side{display:grid;gap:22px}
.path-side .side-card{
  padding:24px;border-radius:var(--r-md);
  background:var(--c-bg-2);border:1px solid var(--line);
  border-left:3px solid var(--c-brand-500);
}
.path-side h4{font-size:17px;margin-bottom:10px;color:var(--c-text-1)}
.path-side p{margin:0;font-size:14.5px}
.mini-list li{
  position:relative;padding-left:18px;margin-bottom:8px;font-size:14.5px;color:var(--c-text-2);
}
.mini-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--c-brand-500);box-shadow:var(--glow-sm);
}
.mini-list li:last-child{margin-bottom:0}

/* ============ 填写项说明 ============ */
.field-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.field-card{
  padding:28px 26px;border-radius:var(--r-md);
  background:var(--c-bg-1);border:1px solid var(--line);
  transition:transform .25s cubic-bezier(.2,.7,.3,1),border-color .25s ease,box-shadow .25s ease;
}
.field-card:hover{transform:translateY(-4px);border-color:rgba(44,224,196,.4);box-shadow:var(--sh-1)}
.field-icon{
  width:46px;height:46px;border-radius:13px;display:grid;place-items:center;
  margin-bottom:18px;color:var(--c-brand-400);font-size:18px;
  background:var(--c-bg-2);border:1px solid rgba(44,224,196,.26);
}
.field-card h3{font-size:19px;margin-bottom:10px}
.field-card p{font-size:14.5px;margin:0}
.metal-line{height:1px;border:0;margin:0;background:linear-gradient(90deg,transparent,rgba(200,178,122,.7) 30%,rgba(44,224,196,.6) 70%,transparent)}

/* ============ 中断提示排查 ============ */
.trouble-panel{
  border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);
  border-top-color:rgba(255,255,255,.16);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-2);
  padding:34px;
}
.trouble-list{display:grid;grid-template-columns:1fr 1fr;gap:22px 34px}
.trouble-item{display:flex;gap:14px;align-items:flex-start}
.trouble-item i{
  flex-shrink:0;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  font-size:14px;color:var(--c-warn);background:rgba(255,176,32,.1);border:1px solid rgba(255,176,32,.24);
}
.trouble-item h4{font-size:16px;margin-bottom:6px}
.trouble-item p{margin:0;font-size:14px;color:var(--c-text-2)}

/* ============ 相关分类 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  display:block;border-radius:var(--r-lg);overflow:hidden;
  background:var(--c-bg-1);border:1px solid var(--line);
  box-shadow:var(--sh-1);
  transition:transform .28s cubic-bezier(.2,.7,.3,1),border-color .28s ease;
}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(44,224,196,.42)}
.rel-card img{width:100%;height:172px;object-fit:cover;transition:transform .4s ease;opacity:.85}
.rel-card:hover img{transform:scale(1.04)}
.rel-body{padding:22px 24px 26px}
.rel-body span{
  display:inline-block;margin-bottom:12px;padding:4px 10px;border-radius:var(--r-badge);
  font-size:12px;color:var(--c-brand-400);background:rgba(44,224,196,.1);border:1px solid rgba(44,224,196,.22);
}
.rel-body h3{font-size:18px;margin-bottom:10px;color:var(--c-text-1)}
.rel-body p{margin:0 0 14px;font-size:14px;color:var(--c-text-2)}
.rel-body .more{font-size:14px;color:var(--c-brand-400);display:inline-flex;align-items:center;gap:6px}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  padding:64px 0;
  background-color:var(--c-bg-1);
  background-size:cover;background-position:center;
  border-top:1px solid rgba(200,178,122,.22);
  border-bottom:1px solid rgba(200,178,122,.22);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(7,11,20,.94),rgba(12,20,36,.86)),
             repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 1px,transparent 1px 9px);
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;gap:32px;justify-content:space-between}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:10px}
.cta-inner p{margin:0;max-width:640px;font-size:15px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;background:var(--c-bg-1);padding:72px 0 30px;
  border-top:1px solid transparent;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.035) 0 1px,transparent 1px 10px);
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--c-metal-400) 22%,var(--c-brand-500) 68%,transparent);
  opacity:.75;
}
.footer-top{padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand strong{color:var(--c-text-1);font-size:17px;letter-spacing:.8px}
.footer-desc{font-size:14px;color:var(--c-text-3);max-width:340px;margin:0}
.footer-title{font-size:15px;color:var(--c-text-1);margin-bottom:18px;letter-spacing:.6px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:var(--c-text-2)}
.footer-links a:hover{color:var(--c-brand-400)}
.footer-info{display:flex;flex-direction:column;gap:12px}
.footer-info li{display:flex;gap:10px;font-size:14px;color:var(--c-text-2);align-items:flex-start}
.footer-info i{color:var(--c-brand-400);margin-top:5px;font-size:13px}
.footer-divider{height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.12) 20%,rgba(255,255,255,.12) 80%,transparent)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  padding-top:22px;font-size:13px;color:var(--c-text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .field-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:991px){
  .section{padding:64px 0}
  .step-wrap{grid-template-columns:1fr;gap:36px}
  .path-grid{grid-template-columns:1fr}
  .field-grid{grid-template-columns:1fr 1fr}
  .rel-grid{grid-template-columns:1fr 1fr}
  .trouble-list{grid-template-columns:1fr}
  .brand-text em{display:none}
}
@media (max-width:767px){
  .page-hero{padding:52px 0 58px}
  .section{padding:48px 0}
  .field-grid{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .hero-lead{font-size:16px}
  .step-item{padding:0 0 30px 66px}
  .step-num{width:42px;height:42px;border-radius:12px;font-size:15px}
  .step-item::before{left:20px;top:48px}
  .brand-text strong{font-size:15px}
}
@media (max-width:520px){
  .container{padding-left:20px;padding-right:20px}
  .cta-actions{width:100%}
  .cta-actions .btn-main,
  .cta-actions .btn-ghost{width:100%}
  .trouble-panel{padding:24px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .rel-card:hover,.field-card:hover,.btn-main:hover,.btn-ghost:hover{transform:none}
}

/* roulang page: category2 */
:root{
  --c-bg-0:#070B14;
  --c-bg-1:#0C1424;
  --c-bg-2:#111C30;
  --c-glass:linear-gradient(160deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
  --c-brand-600:#14B79E;
  --c-brand-500:#2CE0C4;
  --c-brand-400:#5CF0DA;
  --c-accent-500:#7C5CFF;
  --c-metal-400:#C8B27A;
  --c-text-1:#EAF2FF;
  --c-text-2:#9FB0C9;
  --c-text-3:#6B7C99;
  --c-warn:#FFB020;
  --c-danger:#FF5C7A;
  --glow-sm:0 0 12px rgba(44,224,196,.28);
  --glow-md:0 0 24px rgba(44,224,196,.38);
  --glow-lg:0 0 48px rgba(44,224,196,.45);
  --sh-1:0 8px 24px rgba(3,8,20,.45);
  --sh-2:0 20px 60px rgba(3,8,20,.62);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-badge:8px;
  --line:rgba(255,255,255,.09);
  --line-soft:rgba(255,255,255,.06);
  --font-base:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg-0);
  color:var(--c-text-2);
  font-family:var(--font-base);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-brand-400);text-decoration:none;transition:color .25s ease}
a:hover{color:var(--c-brand-500)}
h1,h2,h3,h4,h5{color:var(--c-text-1);margin:0;font-weight:600;letter-spacing:.5px}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-brand-400);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 28px}}
@media (min-width:1600px){.container{max-width:1320px}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(7,11,20,.82);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  backdrop-filter:blur(12px) saturate(140%);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg, rgba(200,178,122,.55), rgba(44,224,196,.6) 45%, rgba(124,92,255,.45));
}
.nav-bar{display:flex;align-items:center;gap:20px;min-height:74px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:40px;height:40px;display:grid;place-items:center;border-radius:var(--r-sm);
  background:linear-gradient(160deg, rgba(44,224,196,.18), rgba(124,92,255,.12));
  border:1px solid rgba(44,224,196,.34);
  box-shadow:var(--glow-sm);
}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:16px;color:var(--c-text-1);font-weight:700;letter-spacing:.6px}
.brand-text em{font-style:normal;font-size:12px;color:var(--c-text-3);letter-spacing:.4px}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;min-height:44px;
  padding:0 12px;font-size:15px;color:var(--c-text-2);border-radius:10px;
  transition:color .25s ease, background .25s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;border-radius:2px;
  background:linear-gradient(90deg, var(--c-brand-500), var(--c-accent-500));
  opacity:0;box-shadow:var(--glow-sm);transition:opacity .25s ease;
}
.nav-link:hover,.nav-link.active{color:var(--c-brand-400);background:rgba(44,224,196,.07)}
.nav-link.active::after{opacity:1}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border:0;border-radius:999px;
  font-size:15px;font-weight:700;color:#05121B;cursor:pointer;
  background:linear-gradient(135deg, var(--c-brand-500), var(--c-accent-500));
  box-shadow:var(--glow-sm);
  transition:filter .25s cubic-bezier(.2,.7,.3,1), transform .25s cubic-bezier(.2,.7,.3,1), box-shadow .25s cubic-bezier(.2,.7,.3,1);
}
.btn-main:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:var(--glow-md);color:#05121B}
.btn-main:active{transform:translateY(0)}
.nav-cta{flex:0 0 auto}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.18);background:transparent;
  color:var(--c-text-1);font-size:15px;font-weight:600;cursor:pointer;
  transition:border-color .25s ease, box-shadow .25s ease, color .25s ease, background .25s ease;
}
.btn-ghost:hover{border-color:var(--c-brand-500);color:var(--c-brand-400);box-shadow:inset 0 0 0 1px rgba(44,224,196,.25), var(--glow-sm)}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-brand-400);text-decoration:underline;text-underline-offset:3px;text-decoration-color:rgba(44,224,196,.4)}
.btn-text:hover{color:var(--c-brand-500);text-decoration-color:var(--c-brand-500)}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:rgba(255,255,255,.03);position:relative;cursor:pointer;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:50%;width:18px;height:2px;border-radius:2px;background:var(--c-text-1);
  transform:translateX(-50%);transition:transform .25s ease, opacity .25s ease;
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{top:-6px;left:0;transform:none}
.nav-toggle span::after{top:6px;left:0;transform:none}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:rotate(45deg);top:0}
.nav-toggle[aria-expanded="true"] span::after{transform:rotate(-45deg);top:0}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-text-3);margin-bottom:20px}
.crumb a{color:var(--c-text-2)}
.crumb a:hover{color:var(--c-brand-400)}
.crumb i{font-size:11px;color:var(--c-text-3)}

/* ---------- 页头横幅 ---------- */
.page-hero{position:relative;isolation:isolate;overflow:hidden;padding:52px 0 76px;min-height:280px;background-color:var(--c-bg-1)}
.page-hero::before{
  content:"";position:absolute;inset:0;z-index:-2;
  background-image:linear-gradient(180deg, rgba(7,11,20,.86) 0%, rgba(7,11,20,.93) 100%), url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background-image:repeating-linear-gradient(118deg, rgba(255,255,255,.045) 0 1px, transparent 1px 10px);
  opacity:.55;
}
.page-hero .container{position:relative;z-index:2}
.kicker{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.8px;color:var(--c-brand-400);margin-bottom:16px}
.kicker::before{content:"";width:22px;height:1px;background:linear-gradient(90deg, var(--c-brand-500), rgba(44,224,196,0))}
.page-hero h1{font-size:clamp(30px,4.4vw,52px);line-height:1.2;font-weight:700;margin-bottom:18px;max-width:16em}
.page-hero h1 span{background:linear-gradient(120deg, var(--c-brand-400), var(--c-accent-500));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{font-size:17px;color:var(--c-text-2);max-width:60ch;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:var(--r-badge);
  font-size:13px;color:var(--c-text-2);background:rgba(255,255,255,.04);border:1px solid var(--line-soft);
}
.chip i{color:var(--c-brand-400);font-size:12px}

/* ---------- 板块骨架 ---------- */
.sec{padding:96px 0}
.sec-alt{background:var(--c-bg-1)}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-head h2{font-size:clamp(24px,2.6vw,36px);line-height:1.3;font-weight:600;margin-bottom:14px}
.sec-head p{font-size:16px;color:var(--c-text-2);margin-bottom:0}
.metal-line{height:1px;background:linear-gradient(90deg, rgba(200,178,122,0), rgba(200,178,122,.6), rgba(44,224,196,.45), rgba(200,178,122,0))}

/* ---------- 图文交替 ---------- */
.alt-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.alt-row + .alt-row{margin-top:88px}
.alt-row.reverse .alt-media{order:2}
.alt-media{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-2)}
.alt-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .6s cubic-bezier(.2,.7,.3,1)}
.alt-media:hover img{transform:scale(1.04)}
.alt-media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg, rgba(7,11,20,0) 45%, rgba(7,11,20,.55) 100%);
}
.alt-body h3{font-size:22px;line-height:1.4;margin-bottom:14px}
.alt-body .num{
  display:inline-block;font-size:13px;letter-spacing:1px;color:var(--c-metal-400);
  border-bottom:1px solid rgba(200,178,122,.45);padding-bottom:2px;margin-bottom:14px;
}
.alt-body p{color:var(--c-text-2)}
.check-list{margin-top:20px;display:grid;gap:12px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--c-text-2)}
.check-list li i{color:var(--c-brand-400);font-size:14px;margin-top:6px;flex:0 0 auto}

/* ---------- 要点清单（7-5） ---------- */
.verify-panel{
  background:var(--c-glass);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);position:relative;overflow:hidden;
}
.verify-panel::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg, rgba(255,255,255,.35), rgba(255,255,255,0))}
.verify-item{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line-soft)}
.verify-item:last-child{border-bottom:0;padding-bottom:0}
.verify-item:first-child{padding-top:0}
.verify-ico{
  flex:0 0 auto;width:42px;height:42px;border-radius:var(--r-sm);display:grid;place-items:center;
  background:rgba(44,224,196,.10);border:1px solid rgba(44,224,196,.28);color:var(--c-brand-400);font-size:16px;
}
.verify-item h4{font-size:17px;margin-bottom:6px}
.verify-item p{font-size:15px;color:var(--c-text-2);margin:0}
.side-card{
  background:var(--c-bg-2);border:1px solid var(--line-soft);border-radius:var(--r-lg);
  padding:26px;height:100%;border-left:3px solid var(--c-brand-500);
}
.side-card h3{font-size:19px;margin-bottom:14px}
.side-card ul{display:grid;gap:14px}
.side-card li{font-size:15px;color:var(--c-text-2);display:flex;gap:10px;align-items:flex-start}
.side-card li span.dot{flex:0 0 auto;width:7px;height:7px;border-radius:50%;background:var(--c-brand-500);margin-top:9px;box-shadow:var(--glow-sm)}
.side-note{margin-top:22px;font-size:14px;color:var(--c-text-3);border-top:1px dashed var(--line);padding-top:16px}

/* ---------- 步骤条（带金属分隔线） ---------- */
.step-strip{display:grid;grid-template-columns:repeat(4,1fr);background:var(--c-bg-1);border:1px solid var(--line-soft);border-radius:var(--r-lg);overflow:hidden}
.step-cell{position:relative;padding:30px 26px}
.step-cell + .step-cell::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:1px;
  background:linear-gradient(180deg, rgba(200,178,122,0), rgba(200,178,122,.55), rgba(200,178,122,0));
}
.step-cell .idx{font-size:13px;letter-spacing:2px;color:var(--c-metal-400);display:block;margin-bottom:12px}
.step-cell h4{font-size:17px;margin-bottom:8px}
.step-cell p{font-size:14px;color:var(--c-text-2);margin:0}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:900px}
.faq-item{background:var(--c-bg-2);border:1px solid var(--line-soft);border-radius:var(--r-md);overflow:hidden;transition:border-color .25s ease, background .25s ease}
.faq-item.open{border-color:rgba(44,224,196,.35);background:var(--c-bg-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;background:transparent;border:0;cursor:pointer;text-align:left;
  color:var(--c-text-1);font-size:17px;font-weight:600;line-height:1.5;
}
.faq-item.open .faq-q{color:var(--c-brand-400)}
.faq-q i{color:var(--c-text-3);font-size:14px;transition:transform .3s ease, color .3s ease;flex:0 0 auto}
.faq-item.open .faq-q i{transform:rotate(180deg);color:var(--c-brand-400)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-inner{padding:0 24px 22px;font-size:15px;color:var(--c-text-2);position:relative}
.faq-item.open .faq-a-inner::before{
  content:"";position:absolute;left:24px;top:2px;bottom:22px;width:3px;border-radius:3px;
  background:linear-gradient(180deg, var(--c-brand-500), rgba(44,224,196,.1));box-shadow:var(--glow-sm);
}
.faq-item.open .faq-a-inner p{padding-left:18px;margin:0}

/* ---------- 相关分类卡 ---------- */
.cat-card{
  display:flex;flex-direction:column;height:100%;border-radius:var(--r-md);overflow:hidden;
  background:var(--c-bg-1);border:1px solid var(--line-soft);
  transition:transform .28s cubic-bezier(.2,.7,.3,1), border-color .28s ease, box-shadow .28s ease;
}
.cat-card:hover{transform:translateY(-4px);border-color:rgba(44,224,196,.34);box-shadow:var(--sh-1)}
.cat-card .thumb{overflow:hidden}
.cat-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s cubic-bezier(.2,.7,.3,1)}
.cat-card:hover .thumb img{transform:scale(1.04)}
.cat-card .body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.cat-card .body h4{font-size:18px}
.cat-card .body p{font-size:14px;color:var(--c-text-2);margin:0}
.cat-card .body .more{margin-top:auto;font-size:14px;color:var(--c-brand-400);display:inline-flex;align-items:center;gap:6px}
.badge-tag{
  align-self:flex-start;display:inline-block;padding:4px 10px;border-radius:var(--r-badge);
  font-size:13px;color:var(--c-brand-400);background:rgba(44,224,196,.10);border:1px solid rgba(44,224,196,.26);
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:var(--c-glass);border:1px solid var(--line);
  padding:44px;display:grid;grid-template-columns:1.4fr .9fr;gap:32px;align-items:center;
  box-shadow:var(--sh-1);
}
.cta-band::before{
  content:"";position:absolute;top:-120px;right:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle, rgba(124,92,255,.30), rgba(124,92,255,0) 70%);pointer-events:none;
}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg, rgba(200,178,122,.65), rgba(44,224,196,.5), rgba(124,92,255,.35));
}
.cta-band h2{font-size:clamp(22px,2.2vw,30px);margin-bottom:12px}
.cta-band p{font-size:15px;color:var(--c-text-2);margin:0}
.cta-side{display:flex;flex-direction:column;gap:14px;align-items:flex-start}
.cta-mail{font-size:14px;color:var(--c-text-3)}
.cta-mail i{color:var(--c-brand-400);margin-right:8px}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:var(--c-bg-1);margin-top:0;padding-top:64px}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg, rgba(200,178,122,0), rgba(200,178,122,.65), rgba(44,224,196,.45), rgba(200,178,122,0));
}
.footer-top{padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand strong{font-size:16px;color:var(--c-text-1);letter-spacing:.6px}
.footer-desc{font-size:14px;color:var(--c-text-2);max-width:38ch;margin:0}
.footer-title{font-size:15px;color:var(--c-text-1);margin-bottom:16px;letter-spacing:.6px}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14px;color:var(--c-text-2)}
.footer-links a:hover{color:var(--c-brand-400)}
.footer-info{display:grid;gap:12px}
.footer-info li{display:flex;gap:10px;font-size:14px;color:var(--c-text-2)}
.footer-info i{color:var(--c-brand-400);margin-top:5px;font-size:13px;flex:0 0 auto}
.footer-divider{height:1px;background:var(--line-soft)}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;padding:22px 0 30px;font-size:13px;color:var(--c-text-3)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .alt-row{gap:40px}
  .alt-row + .alt-row{margin-top:72px}
}
@media (max-width:991px){
  .nav-toggle{display:block}
  .nav-bar{flex-wrap:wrap;min-height:68px}
  .nav-cta{display:none}
  .nav-menu{
    display:none;order:5;width:100%;flex-direction:column;align-items:stretch;gap:0;
    margin:12px 0 18px;padding:8px;border-radius:var(--r-md);
    background:rgba(12,20,36,.96);border:1px solid var(--line-soft);
  }
  .nav-menu.open{display:flex}
  .nav-link{padding:12px 14px;font-size:15px;border-left:3px solid transparent;border-radius:8px}
  .nav-link.active{border-left-color:var(--c-brand-500)}
  .nav-link::after{display:none}
  .sec{padding:64px 0}
  .alt-row{grid-template-columns:1fr;gap:26px}
  .alt-row.reverse .alt-media{order:0}
  .alt-row + .alt-row{margin-top:56px}
  .step-strip{grid-template-columns:repeat(2,1fr)}
  .step-cell + .step-cell::before{display:none}
  .step-cell{border-top:1px solid var(--line-soft)}
  .step-cell:nth-child(1),.step-cell:nth-child(2){border-top:0}
  .cta-band{grid-template-columns:1fr;padding:32px}
  .page-hero{padding:40px 0 60px}
}
@media (max-width:575px){
  .container{padding:0 20px}
  .sec{padding:48px 0}
  .sec-head{margin-bottom:30px}
  .brand-text em{display:none}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%}
  .step-strip{grid-template-columns:1fr}
  .step-cell{border-top:1px solid var(--line-soft)}
  .step-cell:nth-child(2){border-top:1px solid var(--line-soft)}
  .verify-panel{padding:20px}
  .faq-q{padding:16px 18px;font-size:16px}
  .faq-a-inner{padding:0 18px 18px}
  .faq-item.open .faq-a-inner::before{left:18px}
  .cta-band{padding:26px}
  .footer-bottom{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important}
  .cat-card:hover,.btn-main:hover{transform:none}
  .alt-media:hover img,.cat-card:hover .thumb img{transform:none}
}

/* roulang page: category3 */
:root{
  --c-bg-0:#070B14;
  --c-bg-1:#0C1424;
  --c-bg-2:#111C30;
  --c-glass:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  --c-brand-600:#14B79E;
  --c-brand-500:#2CE0C4;
  --c-brand-400:#5CF0DA;
  --c-accent-500:#7C5CFF;
  --c-metal-400:#C8B27A;
  --c-text-1:#EAF2FF;
  --c-text-2:#9FB0C9;
  --c-text-3:#6B7C99;
  --c-warn:#FFB020;
  --c-danger:#FF5C7A;
  --glow-sm:0 0 12px rgba(44,224,196,.28);
  --glow-md:0 0 24px rgba(44,224,196,.38);
  --glow-lg:0 0 48px rgba(44,224,196,.45);
  --sh-1:0 8px 24px rgba(3,8,20,.45);
  --sh-2:0 20px 60px rgba(3,8,20,.62);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --r-badge:8px;
  --sec-y:96px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg-0);
  color:var(--c-text-2);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  text-align:left;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-brand-400);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--c-brand-500);}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--c-text-1);margin:0;font-weight:600;letter-spacing:.5px;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:rgba(44,224,196,.28);color:#fff;}

.container{max-width:1200px;padding-left:20px;padding-right:20px;}
@media (min-width:1400px){.container{max-width:1320px;}}
@media (min-width:768px) and (max-width:1199px){.container{padding-left:28px;padding-right:28px;}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(7,11,20,.82);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,rgba(200,178,122,0),rgba(200,178,122,.55),rgba(44,224,196,.75),rgba(44,224,196,0));
}
.nav-bar{display:flex;align-items:center;gap:24px;min-height:72px;position:relative;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(44,224,196,.16),rgba(124,92,255,.14));
  border:1px solid rgba(44,224,196,.28);
  box-shadow:var(--glow-sm);
}
.brand-mark svg{width:24px;height:24px;}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{color:var(--c-text-1);font-size:17px;font-weight:700;letter-spacing:.6px;}
.brand-text em{font-style:normal;font-size:12px;color:var(--c-text-3);letter-spacing:.4px;}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 14px;border-radius:10px;
  font-size:15px;color:var(--c-text-2);
  transition:color .22s ease,background .22s ease;
}
.nav-link:hover{color:var(--c-brand-400);background:rgba(255,255,255,.04);}
.nav-link.active{color:var(--c-brand-400);background:rgba(44,224,196,.08);}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--c-brand-500);box-shadow:var(--glow-sm);
}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 24px;border:0;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;color:#04140F;
  background:linear-gradient(135deg,var(--c-brand-500),var(--c-accent-500));
  box-shadow:var(--glow-sm);
  transition:transform .25s cubic-bezier(.2,.7,.3,1),box-shadow .25s ease,filter .25s ease;
  cursor:pointer;
}
.btn-main:hover,.btn-main:focus-visible{
  color:#04140F;filter:brightness(1.06);transform:translateY(-1px);box-shadow:var(--glow-md);
}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 24px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.16);background:transparent;
  color:var(--c-text-1);font-size:15px;font-weight:600;
  transition:border-color .25s ease,box-shadow .25s ease,color .25s ease;
}
.btn-ghost:hover,.btn-ghost:focus-visible{
  border-color:var(--c-brand-500);color:var(--c-brand-400);box-shadow:inset 0 0 16px rgba(44,224,196,.18);
}
.nav-cta{flex-shrink:0;}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border-radius:12px;
  border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.03);
  position:relative;cursor:pointer;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:12px;right:12px;height:2px;border-radius:2px;background:var(--c-text-1);
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle span{top:21px;}
.nav-toggle span::before{top:-7px;left:0;right:0;}
.nav-toggle span::after{top:7px;left:0;right:0;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-7px) rotate(-45deg);}

/* ---------- page head ---------- */
.page-head{
  position:relative;
  padding:56px 0 72px;
  background-color:var(--c-bg-0);
  overflow:hidden;
}
.page-head::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(7,11,20,.86),rgba(7,11,20,.94)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.9;
}
.page-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 1px,transparent 1px 9px);
  opacity:.045;
}
.page-head .container{position:relative;z-index:2;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--c-text-3);margin-bottom:28px;}
.crumb a{color:var(--c-text-2);}
.crumb a:hover{color:var(--c-brand-400);}
.crumb .cur{color:var(--c-brand-400);}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:1px;color:var(--c-brand-400);margin-bottom:18px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:linear-gradient(90deg,var(--c-metal-400),var(--c-brand-500));}
.page-head h1{
  font-size:clamp(30px,4.4vw,48px);line-height:1.2;font-weight:700;margin-bottom:20px;
}
.page-head h1 .hl{color:var(--c-brand-400);}
.lead-text{font-size:17px;color:var(--c-text-2);max-width:640px;}
.mini-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.mini-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--r-badge);
  font-size:13px;color:var(--c-text-2);
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.09);
}
.mini-badge i{color:var(--c-brand-400);}
.head-figure{
  border-radius:var(--r-lg);overflow:hidden;padding:10px;
  background:var(--c-glass);
  border:1px solid rgba(255,255,255,.09);
  box-shadow:var(--sh-2);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.head-figure img{border-radius:14px;width:100%;height:240px;object-fit:cover;}

/* ---------- sections ---------- */
.section{padding:var(--sec-y) 0;}
.section-alt{background:var(--c-bg-1);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head .eyebrow{margin-bottom:16px;}
.section-head h2{font-size:clamp(24px,2.6vw,36px);line-height:1.3;margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--c-text-2);}
.divider-metal{
  height:1px;border:0;margin:0;
  background:linear-gradient(90deg,rgba(200,178,122,0),rgba(200,178,122,.6),rgba(44,224,196,.5),rgba(44,224,196,0));
}

/* ---------- qa list ---------- */
.qa-group+.qa-group{margin-top:38px;}
.qa-group-title{
  display:flex;align-items:center;gap:12px;
  font-size:17px;color:var(--c-text-1);margin-bottom:18px;font-weight:600;
}
.qa-group-title i{color:var(--c-brand-400);}
.qa-item{
  border-radius:var(--r-md);
  background:var(--c-bg-2);
  border:1px solid rgba(255,255,255,.08);
  margin-bottom:12px;
  transition:border-color .25s ease,background .25s ease;
  overflow:hidden;
}
.qa-item:hover{border-color:rgba(44,224,196,.32);}
.qa-item.open{
  background:#142138;
  border-color:rgba(44,224,196,.36);
  box-shadow:inset 3px 0 0 0 var(--c-brand-500);
}
.qa-q{
  width:100%;display:flex;align-items:flex-start;gap:14px;text-align:left;
  padding:20px 22px;background:transparent;border:0;cursor:pointer;
  color:var(--c-text-1);font-size:17px;font-weight:600;line-height:1.6;
}
.qa-index{
  font-size:13px;color:var(--c-metal-400);font-variant-numeric:tabular-nums;
  padding-top:4px;flex-shrink:0;letter-spacing:1px;
}
.qa-text{flex:1;}
.qa-arrow{
  color:var(--c-brand-400);font-size:14px;padding-top:6px;
  transition:transform .3s cubic-bezier(.2,.7,.3,1);
}
.qa-item.open .qa-arrow{transform:rotate(180deg);}
.qa-a{max-height:0;overflow:hidden;transition:max-height .35s cubic-bezier(.2,.7,.3,1);}
.qa-a-inner{padding:0 22px 22px 60px;font-size:15px;line-height:1.85;color:var(--c-text-2);}
.qa-a-inner strong{color:var(--c-brand-400);font-weight:600;}

/* ---------- client support ---------- */
.panel-solid{
  background:var(--c-bg-2);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-lg);
  padding:30px;
  height:100%;
}
.panel-solid h3{font-size:20px;margin-bottom:14px;}
.panel-solid .panel-tag{
  display:inline-block;font-size:13px;color:var(--c-metal-400);
  border-bottom:1px solid rgba(200,178,122,.35);
  padding-bottom:4px;margin-bottom:16px;
}
.check-list li{
  position:relative;padding-left:22px;margin-bottom:12px;font-size:15px;line-height:1.8;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:12px;width:7px;height:7px;border-radius:50%;
  background:var(--c-brand-500);box-shadow:var(--glow-sm);
}
.card-line{
  background:var(--c-bg-2);
  border-left:3px solid var(--c-brand-500);
  border-radius:0 var(--r-md) var(--r-md) 0;
  padding:24px 24px 24px 26px;
  height:100%;
  transition:transform .25s cubic-bezier(.2,.7,.3,1),background .25s ease;
}
.card-line:hover{transform:translateY(-4px);background:#142138;}
.card-line h3{font-size:19px;margin-bottom:10px;}
.card-line p{font-size:15px;}
.card-line .meta{font-size:13px;color:var(--c-text-3);margin-top:14px;display:block;}
.glass-card{
  border-radius:var(--r-md);padding:24px;
  background:var(--c-glass);
  border:1px solid rgba(255,255,255,.09);
  box-shadow:var(--sh-1);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  position:relative;overflow:hidden;
}
.glass-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.35),transparent);
}
.glass-card h3{font-size:19px;margin-bottom:10px;}
.glass-card p{font-size:15px;}

/* ---------- steps ---------- */
.steps{position:relative;padding-left:28px;}
.steps::before{
  content:"";position:absolute;left:6px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--c-brand-500),rgba(44,224,196,.05));
}
.step{position:relative;padding-bottom:34px;}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:-28px;top:8px;width:14px;height:14px;border-radius:50%;
  background:var(--c-bg-0);border:2px solid var(--c-brand-500);box-shadow:var(--glow-sm);
}
.step h3{font-size:19px;margin-bottom:8px;}
.step p{font-size:15px;margin-bottom:6px;}
.step .step-note{font-size:13px;color:var(--c-text-3);}
.step-side{height:100%;}

/* ---------- jump cards ---------- */
.jump-card{
  display:block;height:100%;
  border-radius:var(--r-md);
  background:var(--c-bg-2);
  border:1px solid rgba(255,255,255,.08);
  overflow:hidden;
  transition:transform .25s cubic-bezier(.2,.7,.3,1),border-color .25s ease;
}
.jump-card:hover{transform:translateY(-4px);border-color:rgba(44,224,196,.4);}
.jump-card .thumb{height:150px;overflow:hidden;}
.jump-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.jump-card:hover .thumb img{transform:scale(1.04);}
.jump-card .body{padding:22px;}
.jump-card h3{font-size:18px;margin-bottom:8px;color:var(--c-text-1);}
.jump-card p{font-size:14px;color:var(--c-text-2);margin-bottom:14px;}
.jump-card .go{font-size:14px;color:var(--c-brand-400);}
.jump-card .go i{margin-left:6px;transition:transform .25s ease;}
.jump-card:hover .go i{transform:translateX(4px);}

/* ---------- cta / form ---------- */
.cta-wrap{
  border-radius:var(--r-lg);
  background:linear-gradient(150deg,rgba(44,224,196,.08),rgba(124,92,255,.08)),var(--c-bg-1);
  border:1px solid rgba(255,255,255,.09);
  padding:44px;
  box-shadow:var(--sh-2);
}
.form-card{
  border-radius:var(--r-md);
  background:var(--c-bg-2);
  border:1px solid rgba(255,255,255,.08);
  padding:26px;
}
.form-label-text{display:block;font-size:14px;color:var(--c-text-2);margin-bottom:8px;}
.form-label-text .req{color:var(--c-brand-400);margin-left:4px;}
.form-field{
  width:100%;min-height:46px;padding:12px 14px;
  background:#0A1120;border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-sm);color:var(--c-text-1);font-size:15px;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.form-field::placeholder{color:var(--c-text-3);}
.form-field:focus{
  outline:none;border-color:var(--c-brand-500);box-shadow:var(--glow-sm);
}
textarea.form-field{min-height:104px;resize:vertical;}
.form-row{margin-bottom:18px;}
.form-hint{font-size:13px;color:var(--c-text-3);margin-top:8px;display:block;}
.form-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:6px;}

/* ---------- footer ---------- */
.site-footer{
  position:relative;background:var(--c-bg-1);
  padding:72px 0 28px;margin-top:0;
  border-top:1px solid rgba(255,255,255,.06);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(200,178,122,0),rgba(200,178,122,.6),rgba(44,224,196,.5),rgba(44,224,196,0));
}
.footer-top{padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand strong{color:var(--c-text-1);font-size:17px;letter-spacing:.6px;}
.footer-desc{font-size:14px;color:var(--c-text-2);max-width:340px;}
.footer-title{font-size:15px;color:var(--c-text-1);margin-bottom:16px;font-weight:600;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--c-text-2);}
.footer-links a:hover{color:var(--c-brand-400);}
.footer-info li{display:flex;gap:10px;font-size:14px;color:var(--c-text-2);margin-bottom:12px;}
.footer-info i{color:var(--c-brand-400);padding-top:4px;}
.footer-divider{
  height:1px;background:linear-gradient(90deg,rgba(255,255,255,.02),rgba(255,255,255,.12),rgba(255,255,255,.02));
  margin:0 0 24px;
}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--c-text-3);
}
@media (min-width:992px){
  .footer-links{border-left:1px solid rgba(255,255,255,.06);padding-left:0;}
}

/* ---------- responsive ---------- */
@media (max-width:991px){
  :root{--sec-y:64px;}
  .nav-menu{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    background:rgba(7,11,20,.98);
    border:1px solid rgba(255,255,255,.09);
    border-radius:0 0 var(--r-md) var(--r-md);
    padding:14px 18px 20px;
    max-height:0;overflow:hidden;opacity:0;pointer-events:none;
    transition:max-height .35s cubic-bezier(.2,.7,.3,1),opacity .25s ease,padding .25s ease;
  }
  .nav-menu.open{max-height:520px;opacity:1;pointer-events:auto;}
  .nav-link{padding:14px 12px;font-size:16px;}
  .nav-link.active::after{display:none;}
  .nav-link.active{border-left:3px solid var(--c-brand-500);}
  .nav-toggle{display:block;}
  .nav-cta{display:none;}
  .nav-menu .nav-cta-mobile{
    display:inline-flex;margin-top:12px;width:100%;
  }
  .head-figure{margin-top:28px;}
  .qa-a-inner{padding-left:22px;}
  .cta-wrap{padding:30px;}
}
@media (max-width:767px){
  :root{--sec-y:48px;}
  .page-head{padding:36px 0 52px;}
  .lead-text{font-size:16px;}
  .head-figure img{height:190px;}
  .qa-q{font-size:16px;padding:18px;}
  .step::before{left:-24px;}
  .steps{padding-left:24px;}
  .btn-main,.btn-ghost{width:100%;}
  .form-actions .btn-main,.form-actions .btn-ghost{width:100%;}
}
@media (max-width:575px){
  .brand-text strong{font-size:15px;}
  .brand-text em{font-size:11px;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .mini-badge{width:100%;justify-content:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms!important;animation-duration:.01ms!important;}
  html{scroll-behavior:auto;}
  .jump-card:hover,.card-line:hover,.btn-main:hover{transform:none!important;}
  .jump-card:hover .thumb img{transform:none!important;}
}
a:focus-visible,button:focus-visible,.btn-main:focus-visible,.btn-ghost:focus-visible{
  outline:2px solid var(--c-brand-500);outline-offset:2px;
}