/* roulang page: index */
/* ========== 设计变量 ========== */
:root{
  --bg-0:#05090F;
  --bg-1:#0A121D;
  --panel:rgba(18,30,46,.62);
  --panel-2:rgba(255,255,255,.045);
  --stroke:rgba(140,190,220,.14);
  --stroke-strong:rgba(166,255,63,.35);
  --accent:#A6FF3F;
  --accent-ink:#06110A;
  --accent-2:#22D3C5;
  --warn:#FF7A45;
  --text-1:#EAF2FA;
  --text-2:#9FB0C4;
  --text-3:#64768C;
  --r-card:18px;
  --r-btn:12px;
  --r-img:14px;
  --r-badge:6px;
  --shadow-card:0 12px 40px -18px rgba(0,0,0,.75);
  --shadow-float:0 24px 60px -24px rgba(0,0,0,.8);
  --font-cn:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"SF Mono",Consolas,monospace;
  --maxw:1200px;
  --nav-h:68px;
}
/* ========== reset / base ========== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{display:block;max-width:100%;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
  border-radius:6px;
  box-shadow:0 0 0 4px rgba(166,255,63,.18);
}
::selection{background:rgba(166,255,63,.28);color:var(--text-1)}
/* ========== 通用容器 ========== */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:96px 0;position:relative}
.section.alt{background:var(--bg-1)}
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:28px;margin-bottom:44px;flex-wrap:wrap;
}
.sec-title{
  position:relative;padding-left:16px;
  font-size:clamp(26px,3.2vw,36px);line-height:1.25;margin:0;
}
.sec-title::before{
  content:"";position:absolute;left:0;top:.22em;width:3px;height:.82em;
  background:var(--accent);border-radius:2px;
  box-shadow:0 0 14px rgba(166,255,63,.5);
}
.sec-desc{margin:10px 0 0;color:var(--text-2);font-size:15px;max-width:640px;line-height:1.8}
.link-more{
  color:var(--accent-2);font-size:14px;font-weight:600;
  display:inline-flex;align-items:center;gap:6px;position:relative;padding-bottom:2px;
}
.link-more::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:1px;
  background:var(--accent-2);transition:width .22s ease-out;
}
.link-more:hover::after{width:100%}
.link-more i{font-size:12px;transition:transform .2s ease-out}
.link-more:hover i{transform:translateX(3px)}
/* ========== 按钮 ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,border-color .18s ease-out,color .18s ease-out;
}
.btn-primary{
  background:var(--accent);color:var(--accent-ink);border-radius:999px;
  box-shadow:0 8px 24px -12px rgba(166,255,63,.6);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 0 0 1px var(--stroke-strong),0 10px 32px -10px rgba(166,255,63,.45);
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 14px -8px rgba(166,255,63,.5)}
.btn-ghost{
  background:transparent;border-color:var(--stroke);color:var(--text-1);
}
.btn-ghost:hover{
  border-color:var(--accent-2);background:rgba(255,255,255,.04);transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}
/* ========== 徽章 / 标签 ========== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-badge);
  font-size:12px;line-height:1.5;font-weight:600;letter-spacing:.02em;
  background:rgba(166,255,63,.12);color:var(--accent);
  border:1px solid rgba(166,255,63,.2);
}
.badge-cyan{background:rgba(34,211,197,.12);color:var(--accent-2);border-color:rgba(34,211,197,.22)}
.badge-mute{background:var(--panel-2);color:var(--text-2);border-color:var(--stroke)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  padding:8px 16px;border-radius:999px;font-size:14px;
  background:var(--panel-2);border:1px solid var(--stroke);color:var(--text-2);
  transition:all .18s ease-out;
}
.tag:hover{color:var(--text-1);border-color:var(--accent-2)}
.tag.active{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);font-weight:600}
/* ========== 导航 ========== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  height:var(--nav-h);
  border-bottom:1px solid transparent;
  transition:background .25s ease-out,border-color .25s ease-out,backdrop-filter .25s ease-out;
}
.site-header.is-scrolled{
  background:rgba(5,9,15,.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--stroke);
}
.nav-inner{
  height:var(--nav-h);
  display:grid;grid-template-columns:5.5fr 6.5fr;
  align-items:center;gap:24px;
}
.nav-left{display:flex;align-items:center;gap:34px;min-width:0}
.nav-right{display:flex;align-items:center;justify-content:flex-end;gap:16px}
.logo{display:inline-flex;align-items:baseline;gap:6px;white-space:nowrap}
.logo-main{font-size:20px;font-weight:800;letter-spacing:-.01em;color:var(--text-1)}
.logo-sub{
  font-size:11px;font-weight:600;letter-spacing:.06em;
  color:var(--accent);padding:2px 7px;border-radius:var(--r-badge);
  background:rgba(166,255,63,.1);border:1px solid rgba(166,255,63,.22);
}
.nav-menu{display:flex;align-items:center;gap:26px}
.nav-link{
  position:relative;font-size:15px;color:var(--text-2);
  padding:6px 0;transition:color .18s ease-out,transform .18s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;
  background:var(--accent);border-radius:2px;transition:width .2s ease-out;
}
.nav-link:hover{color:var(--text-1);transform:translateY(-1px)}
.nav-link.active{color:var(--accent)}
.nav-link.active::after{width:100%}
.nav-search{position:relative;display:flex;align-items:center}
.search-toggle{
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--stroke);background:var(--panel-2);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--text-2);transition:all .18s ease-out;
}
.search-toggle:hover{color:var(--accent);border-color:var(--stroke-strong)}
.search-box{
  position:absolute;right:48px;top:50%;transform:translateY(-50%);
  width:0;opacity:0;pointer-events:none;overflow:hidden;
  transition:width .26s ease-out,opacity .2s ease-out;
}
.search-box.open{width:240px;opacity:1;pointer-events:auto}
.search-box input{
  width:100%;height:40px;padding:0 14px;
  border-radius:var(--r-btn);
  background:var(--panel);border:1px solid var(--stroke);
  color:var(--text-1);font-size:14px;
  backdrop-filter:blur(14px);
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.search-box input::placeholder{color:var(--text-3)}
.search-box input:focus{
  outline:none;border-color:var(--accent);
  box-shadow:0 0 0 2px rgba(166,255,63,.25);
}
.nav-cta{padding:11px 22px;font-size:14px}
.hamburger{
  display:none;width:42px;height:42px;border-radius:var(--r-btn);
  border:1px solid var(--stroke);background:var(--panel-2);
  color:var(--text-1);align-items:center;justify-content:center;font-size:17px;
}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:340px;z-index:200;
  background:rgba(8,14,24,.96);backdrop-filter:blur(18px);
  border-left:1px solid var(--stroke);
  transform:translateX(100%);transition:transform .28s ease-out;
  padding:22px 22px 34px;display:flex;flex-direction:column;gap:8px;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{
  width:38px;height:38px;border-radius:var(--r-btn);
  border:1px solid var(--stroke);color:var(--text-2);
  display:inline-flex;align-items:center;justify-content:center;
}
.drawer-close:hover{color:var(--accent);border-color:var(--stroke-strong)}
.drawer-link{
  padding:13px 14px;border-radius:var(--r-btn);
  border:1px solid transparent;color:var(--text-2);font-size:15px;
  display:flex;align-items:center;justify-content:space-between;
  transition:all .18s ease-out;
}
.drawer-link:hover{background:var(--panel-2);color:var(--text-1);border-color:var(--stroke)}
.drawer-link.active{color:var(--accent);border-color:rgba(166,255,63,.28);background:rgba(166,255,63,.08)}
.drawer-foot{margin-top:auto;padding-top:22px;border-top:1px solid var(--stroke);display:grid;gap:12px}
.scrim{
  position:fixed;inset:0;background:rgba(3,6,10,.62);
  z-index:150;opacity:0;pointer-events:none;transition:opacity .26s ease-out;
}
.scrim.open{opacity:1;pointer-events:auto}
/* ========== Hero ========== */
.hero{
  position:relative;
  padding:calc(var(--nav-h) + 64px) 0 88px;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;top:-160px;left:-8%;
  width:720px;height:720px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,211,197,.14),transparent 66%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;bottom:-220px;right:-10%;
  width:640px;height:640px;border-radius:50%;
  background:radial-gradient(circle,rgba(166,255,63,.1),transparent 68%);
  pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:5.5fr 6.5fr;gap:48px;align-items:center;
}
.hero-copy{max-width:560px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--accent-2);
  padding:6px 12px;border-radius:var(--r-badge);
  background:rgba(34,211,197,.08);border:1px solid rgba(34,211,197,.2);
  margin-bottom:22px;
}
.hero h1{
  font-size:clamp(32px,5vw,56px);line-height:1.15;font-weight:700;
  letter-spacing:-.01em;margin-bottom:20px;
}
.hero h1 em{font-style:normal;color:var(--accent);position:relative}
.hero-lead{font-size:17px;color:var(--text-2);line-height:1.85;max-width:520px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-points{display:grid;gap:12px}
.hero-points li{
  display:flex;align-items:flex-start;gap:12px;
  font-size:15px;color:var(--text-2);
}
.hero-points i{
  color:var(--accent);font-size:14px;margin-top:6px;width:16px;text-align:center;flex:0 0 16px;
}
.hero-visual{
  position:relative;border-radius:22px;overflow:hidden;
  border:1px solid var(--stroke);box-shadow:var(--shadow-card);
  min-height:470px;background:var(--bg-1);
}
.hero-visual img{
  width:100%;height:100%;min-height:470px;object-fit:cover;border-radius:0;
}
.hero-veil{
  position:absolute;inset:0;pointer-events:none;
  background:
    linear-gradient(180deg,rgba(5,9,15,.4),rgba(5,9,15,.66)),
    repeating-linear-gradient(0deg,rgba(140,190,220,.07) 0 1px,transparent 1px 44px),
    repeating-linear-gradient(90deg,rgba(140,190,220,.05) 0 1px,transparent 1px 44px);
}
.hero-chip{
  position:absolute;right:20px;bottom:20px;z-index:3;
  padding:15px 18px;border-radius:14px;
  background:var(--panel);backdrop-filter:blur(14px);
  border:1px solid var(--stroke);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
  min-width:186px;
}
.hero-chip .chip-label{font-size:12px;color:var(--text-3);letter-spacing:.06em;display:block;margin-bottom:6px}
.hero-chip .chip-value{
  font-family:var(--font-mono);font-size:22px;font-weight:700;color:var(--accent);line-height:1.2;
}
.hero-chip .chip-note{font-size:12px;color:var(--text-2);margin-top:4px;display:block}
/* ========== Bento 卖点 ========== */
.bento{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch}
.card{
  background:var(--panel);backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--stroke);border-radius:var(--r-card);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
  transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.card:hover{transform:translateY(-4px);border-color:var(--stroke-strong)}
.bento-main{padding:38px 36px;display:flex;flex-direction:column;gap:18px;justify-content:space-between}
.bento-icon{
  width:52px;height:52px;border-radius:14px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:21px;color:var(--accent);
  background:rgba(166,255,63,.1);border:1px solid rgba(166,255,63,.22);
}
.bento-main h3{font-size:24px;line-height:1.4}
.bento-main p{color:var(--text-2);font-size:15px;line-height:1.85;margin:0}
.bento-list{display:grid;gap:24px}
.bento-strip{
  display:flex;align-items:center;gap:20px;
  padding:26px 28px;text-decoration:none;
}
.bento-strip .num{
  font-family:var(--font-mono);font-size:20px;font-weight:700;
  color:var(--accent);flex:0 0 auto;
}
.bento-strip .strip-body{flex:1;min-width:0}
.bento-strip .strip-body strong{display:block;font-size:16px;margin-bottom:4px}
.bento-strip .strip-body span{font-size:14px;color:var(--text-2);line-height:1.7;display:block}
.bento-strip i{color:var(--text-3);transition:transform .2s ease-out,color .2s ease-out}
.bento-strip:hover i{color:var(--accent);transform:translateX(4px)}
/* ========== 流程 ========== */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.flow::before{
  content:"";position:absolute;top:30px;left:6%;right:6%;height:1px;
  background-image:linear-gradient(90deg,var(--stroke) 0 8px,transparent 8px 16px);
  background-size:16px 1px;background-repeat:repeat-x;
  z-index:0;
}
.flow-step{position:relative;z-index:1;padding-top:0}
.flow-dot{
  width:60px;height:60px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:18px;font-weight:700;
  background:var(--bg-1);border:1px solid var(--stroke);
  color:var(--accent-2);margin-bottom:20px;
  transition:all .22s ease-out;
}
.flow-step:hover .flow-dot{
  color:var(--accent-ink);background:var(--accent);border-color:var(--accent);
  box-shadow:0 0 0 6px rgba(166,255,63,.12);
}
.flow-step h3{font-size:18px;margin-bottom:10px}
.flow-step p{font-size:14px;color:var(--text-2);line-height:1.8;margin:0}
/* ========== 数据条 ========== */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--stroke);border-radius:var(--r-card);
  background:var(--panel);backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
  overflow:hidden;
}
.stat{padding:32px 28px;border-right:1px solid var(--stroke)}
.stat:last-child{border-right:0}
.stat .stat-value{
  font-family:var(--font-mono);font-size:clamp(26px,3vw,34px);font-weight:700;
  color:var(--accent);line-height:1.1;display:block;margin-bottom:8px;
}
.stat .stat-label{font-size:14px;color:var(--text-2);display:block}
/* ========== 评价横滑 ========== */
.quote-scroll{
  display:flex;gap:20px;overflow-x:auto;padding:4px 4px 20px;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
}
.quote-scroll::-webkit-scrollbar{height:6px}
.quote-scroll::-webkit-scrollbar-thumb{background:var(--stroke);border-radius:999px}
.quote-card{
  flex:0 0 320px;scroll-snap-align:start;
  padding:28px 26px;display:flex;flex-direction:column;gap:16px;
}
.quote-card:hover{transform:translateY(-4px)}
.quote-card .quote-text{font-size:15px;color:var(--text-2);line-height:1.85;margin:0}
.quote-user{display:flex;align-items:center;gap:12px;margin-top:auto}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:0 0 40px;
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:14px;font-weight:700;
  background:rgba(34,211,197,.14);color:var(--accent-2);
  border:1px solid rgba(34,211,197,.24);
}
.quote-user strong{display:block;font-size:14px}
.quote-user span{font-size:12px;color:var(--text-3)}
/* ========== 最新信息 CMS ========== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--panel);backdrop-filter:blur(14px);
  border:1px solid var(--stroke);border-radius:var(--r-card);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
  transition:transform .18s ease-out,border-color .18s ease-out;
}
.news-card:hover{transform:translateY(-4px);border-color:var(--stroke-strong)}
.news-cover{overflow:hidden;aspect-ratio:16/9;background:var(--bg-1)}
.news-cover img{
  width:100%;height:100%;object-fit:cover;border-radius:0;
  transition:transform .3s ease-out;
}
.news-card:hover .news-cover img{transform:scale(1.03)}
.news-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-title{
  font-size:17px;line-height:1.55;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-excerpt{
  font-size:14px;color:var(--text-2);line-height:1.75;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:14px;border-top:1px solid var(--stroke);
}
.news-time{font-family:var(--font-mono);font-size:13px;color:var(--text-3)}
.news-more{font-size:13px;color:var(--accent-2);display:inline-flex;align-items:center;gap:6px}
.news-card:hover .news-more i{transform:translateX(3px)}
.news-more i{transition:transform .2s ease-out;font-size:11px}
.empty-state{
  grid-column:1/-1;text-align:center;padding:60px 24px;
  border:1px dashed var(--stroke);border-radius:var(--r-card);
  background:var(--panel-2);
}
.empty-state i{font-size:34px;color:var(--text-3);margin-bottom:16px;display:block}
.empty-state p{color:var(--text-2);margin-bottom:20px}
/* ========== 服务档位 ========== */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.plan{
  position:relative;padding:34px 30px;display:flex;flex-direction:column;gap:20px;
}
.plan-featured{
  border-color:var(--stroke-strong);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),0 0 0 1px var(--stroke-strong),0 22px 60px -26px rgba(166,255,63,.4);
  transform:translateY(-8px);
}
.plan-featured:hover{transform:translateY(-12px)}
.plan-flag{
  position:absolute;top:-12px;left:28px;
  padding:5px 12px;border-radius:var(--r-badge);
  background:var(--accent);color:var(--accent-ink);
  font-size:12px;font-weight:700;letter-spacing:.04em;
}
.plan h3{font-size:19px;margin:0}
.plan .plan-sub{font-size:13px;color:var(--text-3);margin:6px 0 0}
.plan-price{
  font-family:var(--font-mono);font-size:34px;font-weight:700;color:var(--text-1);line-height:1;
  display:flex;align-items:baseline;gap:6px;
}
.plan-price small{font-size:13px;font-weight:500;color:var(--text-3);font-family:var(--font-cn)}
.plan-list{display:grid;gap:12px;margin:0;padding:0;list-style:none;flex:1}
.plan-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7;align-items:flex-start}
.plan-list i{color:var(--accent);font-size:12px;margin-top:7px;flex:0 0 14px}
/* ========== FAQ ========== */
.faq-list{display:grid;gap:14px}
.faq-item{
  background:var(--panel);backdrop-filter:blur(14px);
  border:1px solid var(--stroke);border-radius:var(--r-card);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  overflow:hidden;transition:border-color .18s ease-out;
}
.faq-item:hover{border-color:var(--stroke-strong)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 26px;text-align:left;font-size:16px;font-weight:600;
  color:var(--text-1);position:relative;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:20px;border-radius:2px;background:var(--stroke);
  transition:background .2s ease-out,box-shadow .2s ease-out;
}
.faq-item.open .faq-q::before{background:var(--accent);box-shadow:0 0 14px rgba(166,255,63,.5)}
.faq-q span{padding-left:14px}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--stroke);color:var(--text-2);
  font-size:14px;transition:transform .24s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.faq-item.open .faq-icon{
  transform:rotate(45deg);color:var(--accent-ink);
  background:var(--accent);border-color:var(--accent);
}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s ease-out;
}
.faq-a p{
  padding:0 26px 24px 40px;margin:0;
  font-size:15px;line-height:1.85;color:var(--text-2);
}
/* ========== 底部 CTA ========== */
.cta-panel{
  display:grid;grid-template-columns:1fr 420px;gap:48px;
  padding:52px 48px;border-radius:22px;
  background:var(--panel);backdrop-filter:blur(16px);
  border:1px solid var(--stroke);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-float);
  align-items:start;
}
.cta-copy h2{font-size:clamp(24px,2.6vw,32px);line-height:1.35;margin-bottom:16px}
.cta-copy p{color:var(--text-2);font-size:15px;line-height:1.85;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.form-grid{display:grid;gap:16px}
.field{display:grid;gap:8px}
.field label{font-size:13px;color:var(--text-2);letter-spacing:.02em}
.field input,.field textarea{
  width:100%;padding:13px 14px;border-radius:var(--r-btn);
  background:var(--panel-2);border:1px solid var(--stroke);
  color:var(--text-1);font-size:14px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out,background .18s ease-out;
}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);
  box-shadow:0 0 0 2px rgba(166,255,63,.25);
  background:rgba(255,255,255,.05);
}
.field textarea{resize:vertical;min-height:96px;line-height:1.7}
.field.error input,.field.error textarea{border-color:var(--warn);box-shadow:0 0 0 2px rgba(255,122,69,.18)}
.field-msg{font-size:13px;color:var(--warn);display:none;align-items:center;gap:6px}
.field.error .field-msg{display:flex}
.form-note{font-size:12px;color:var(--text-3);line-height:1.7;margin:0}
.form-ok{
  display:none;padding:12px 14px;border-radius:var(--r-btn);
  background:rgba(166,255,63,.1);border:1px solid rgba(166,255,63,.28);
  color:var(--accent);font-size:13px;line-height:1.7;
}
.form-ok.show{display:block}
/* ========== 页脚 ========== */
.site-footer{
  background:var(--bg-1);border-top:1px solid var(--stroke);
  padding:68px 0 0;margin-top:0;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:52px;
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.85;max-width:320px;margin-bottom:18px}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:var(--text-1);margin-bottom:18px;font-weight:700}
.footer-links{display:grid;gap:12px}
.footer-links a{font-size:14px;color:var(--text-2);transition:color .18s ease-out,transform .18s ease-out;display:inline-block}
.footer-links a:hover{color:var(--accent-2);transform:translateX(2px)}
.footer-contact{display:grid;gap:14px}
.footer-contact li{display:flex;gap:12px;font-size:14px;color:var(--text-2);line-height:1.7}
.footer-contact i{color:var(--accent-2);margin-top:6px;font-size:13px;flex:0 0 14px}
.footer-bottom{
  border-top:1px solid var(--stroke);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
}
.footer-bottom p{margin:0;font-size:13px;color:var(--text-3)}
.footer-bottom .tech{font-family:var(--font-mono);font-size:12px;color:var(--text-3)}
/* ========== 浮动 CTA ========== */
.float-stack{
  position:fixed;right:24px;bottom:24px;z-index:130;
  display:flex;flex-direction:column;align-items:flex-end;gap:12px;
}
.to-top{
  width:44px;height:44px;border-radius:50%;
  background:var(--panel);backdrop-filter:blur(14px);
  border:1px solid var(--stroke);color:var(--text-2);
  display:inline-flex;align-items:center;justify-content:center;
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .2s ease-out,transform .2s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.to-top.is-visible{opacity:1;transform:translateY(0);pointer-events:auto}
.to-top:hover{color:var(--accent);border-color:var(--stroke-strong)}
.float-cta{
  padding:13px 22px;border-radius:999px;
  background:var(--accent);color:var(--accent-ink);
  font-size:14px;font-weight:700;
  display:inline-flex;align-items:center;gap:8px;
  box-shadow:0 14px 34px -14px rgba(166,255,63,.6);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta:hover{box-shadow:0 0 0 1px var(--stroke-strong),0 16px 40px -12px rgba(166,255,63,.5)}
/* ========== 响应式 ========== */
@media (min-width:1441px){
  :root{--maxw:1320px}
}
@media (max-width:1024px){
  .section{padding:72px 0}
  .hero{padding:calc(var(--nav-h) + 44px) 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:38px}
  .hero-copy{max-width:none}
  .hero-visual{min-height:360px}
  .hero-visual img{min-height:360px}
  .bento{grid-template-columns:1fr}
  .flow{grid-template-columns:repeat(2,1fr);gap:30px}
  .flow::before{display:none}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--stroke)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .plans{grid-template-columns:1fr;gap:28px}
  .plan-featured{transform:none}
  .plan-featured:hover{transform:translateY(-4px)}
  .cta-panel{grid-template-columns:1fr;gap:34px;padding:40px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .nav-menu{display:none}
  .hamburger{display:inline-flex}
  .nav-inner{grid-template-columns:auto 1fr}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .sec-head{margin-bottom:30px}
  .news-grid{grid-template-columns:1fr}
  .quote-card{flex:0 0 82vw}
  .hero-chip{right:14px;bottom:14px;padding:12px 14px;min-width:160px}
  .cta-panel{padding:32px 22px;border-radius:18px}
  .faq-q{padding:18px 20px;font-size:15px}
  .faq-a p{padding:0 20px 20px 34px}
  .search-box{display:none}
  .float-stack{
    right:0;left:0;bottom:0;gap:0;align-items:stretch;
    padding:10px 14px calc(10px + env(safe-area-inset-bottom));
    background:rgba(5,9,15,.86);backdrop-filter:blur(14px);
    border-top:1px solid var(--stroke);
    flex-direction:row;justify-content:space-between;
  }
  .float-cta{flex:1;justify-content:center;padding:13px 18px}
  .to-top{width:46px;height:46px;flex:0 0 46px;background:var(--panel-2)}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .hero h1{font-size:30px}
  .hero-actions .btn{width:100%}
  .stats{grid-template-columns:1fr}
  .stat{border-right:0;border-bottom:1px solid var(--stroke);padding:26px 22px}
  .stat:last-child{border-bottom:0}
  .flow{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .bento-main{padding:28px 24px}
  .bento-strip{padding:22px 22px;gap:14px}
  .drawer{width:88vw}
}

/* roulang page: article */
:root{
  --bg-0:#05090F;
  --bg-1:#0A121D;
  --panel:rgba(18,30,46,.62);
  --panel-2:rgba(255,255,255,.045);
  --stroke:rgba(140,190,220,.14);
  --stroke-strong:rgba(166,255,63,.35);
  --accent:#A6FF3F;
  --accent-ink:#06110A;
  --accent-2:#22D3C5;
  --warn:#FF7A45;
  --text-1:#EAF2FA;
  --text-2:#9FB0C4;
  --text-3:#64768C;
  --radius-card:18px;
  --radius-card-sm:14px;
  --radius-btn:12px;
  --radius-pill:999px;
  --radius-img:14px;
  --radius-badge:6px;
  --shadow-card:0 12px 40px -18px rgba(0,0,0,.75);
  --shadow-pop:0 24px 60px -24px rgba(0,0,0,.8);
  --glow:0 0 0 1px var(--stroke-strong),0 10px 32px -10px rgba(166,255,63,.45);
  --inset-hi:inset 0 1px 0 rgba(255,255,255,.06);
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"SF Mono",Consolas,monospace;
  --container:1200px;
  --sec-pad:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(900px 520px at 82% -8%,rgba(34,211,197,.10),transparent 65%),
    radial-gradient(760px 460px at 4% 6%,rgba(166,255,63,.07),transparent 62%);
  z-index:0;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:inherit;text-decoration:none;}
p{margin:0 0 1.2em;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;color:var(--text-1);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;box-shadow:0 0 0 4px rgba(166,255,63,.18);border-radius:8px;}
::selection{background:rgba(166,255,63,.28);color:#fff;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}
@media (min-width:1441px){:root{--container:1320px;}}
.section{padding:var(--sec-pad) 0;position:relative;}
.section--alt{background:var(--bg-1);border-top:1px solid var(--stroke);border-bottom:1px solid var(--stroke);}
.section-head{margin-bottom:40px;display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.section-title{
  font-size:clamp(26px,3.2vw,36px);
  line-height:1.25;
  padding-left:16px;
  position:relative;
}
.section-title::before{
  content:"";
  position:absolute;
  left:0;top:.18em;
  width:2px;height:18px;
  background:var(--accent);
  border-radius:2px;
  box-shadow:0 0 14px rgba(166,255,63,.55);
}
.section-sub{color:var(--text-2);font-size:15px;max-width:640px;margin-top:12px;padding-left:16px;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  height:68px;
  background:linear-gradient(180deg,rgba(5,9,15,.92),rgba(5,9,15,.45));
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:rgba(10,18,29,.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--stroke);
}
.header-inner{
  height:68px;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.header-left{display:flex;align-items:center;gap:36px;min-width:0;}
.header-right{display:flex;align-items:center;gap:12px;}
.logo{display:flex;align-items:baseline;gap:6px;white-space:nowrap;}
.logo-main{font-size:19px;font-weight:700;letter-spacing:.01em;color:var(--text-1);}
.logo-sub{
  font-size:11px;
  letter-spacing:.06em;
  color:var(--accent);
  padding:2px 6px;
  border:1px solid var(--stroke-strong);
  border-radius:var(--radius-badge);
  background:rgba(166,255,63,.08);
}
.nav-menu{display:flex;align-items:center;gap:26px;}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--text-2);
  padding:6px 0;
  transition:color .18s ease,transform .18s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  height:2px;width:0;
  background:var(--accent);
  border-radius:2px;
  transition:width .2s ease;
}
.nav-link:hover{color:var(--text-1);transform:translateY(-1px);}
.nav-link.active{color:var(--accent);}
.nav-link.active::after{width:18px;}
.nav-search{
  display:flex;
  align-items:center;
  gap:8px;
}
.search-toggle{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:var(--radius-btn);
  border:1px solid var(--stroke);
  color:var(--text-2);
  background:var(--panel-2);
  transition:.18s ease;
}
.search-toggle:hover{color:var(--accent);border-color:var(--stroke-strong);}
.search-field{
  width:0;
  opacity:0;
  overflow:hidden;
  transition:width .24s ease,opacity .24s ease;
}
.nav-search.is-open .search-field{width:240px;opacity:1;}
.search-field input{
  width:100%;
  height:40px;
  padding:0 14px;
  border-radius:var(--radius-btn);
  border:1px solid var(--stroke);
  background:var(--panel);
  color:var(--text-1);
  font-size:14px;
  outline:none;
  transition:.18s ease;
}
.search-field input::placeholder{color:var(--text-3);}
.search-field input:focus{border-color:var(--accent);box-shadow:0 0 0 2px rgba(166,255,63,.22);}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  padding:12px 22px;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:var(--accent-ink);}
.btn-primary:hover{background:#b6ff5c;transform:translateY(-2px);box-shadow:var(--glow);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{
  background:transparent;
  border:1px solid var(--stroke);
  color:var(--text-1);
}
.btn-ghost:hover{border-color:rgba(34,211,197,.6);background:rgba(255,255,255,.04);transform:translateY(-2px);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-pill{border-radius:var(--radius-pill);}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--accent-2);
  font-size:14px;
  font-weight:600;
  position:relative;
  padding-bottom:2px;
}
.btn-link::after{
  content:"";
  position:absolute;left:0;bottom:0;
  width:0;height:1px;background:var(--accent-2);
  transition:width .2s ease;
}
.btn-link:hover::after{width:100%;}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:var(--radius-btn);
  border:1px solid var(--stroke);
  color:var(--text-1);
  background:var(--panel-2);
}
.drawer{
  position:fixed;
  top:0;right:0;
  width:82vw;
  max-width:360px;
  height:100%;
  background:rgba(10,18,29,.96);
  backdrop-filter:blur(16px);
  border-left:1px solid var(--stroke);
  padding:88px 24px 32px;
  transform:translateX(105%);
  transition:transform .28s ease;
  z-index:90;
  display:flex;
  flex-direction:column;
  gap:18px;
}
.drawer.is-open{transform:translateX(0);}
.drawer .nav-link{font-size:17px;padding:12px 0;border-bottom:1px solid var(--stroke);}
.drawer .nav-link.active::after{width:24px;bottom:8px;}
.drawer-close{
  position:absolute;top:20px;right:20px;
  width:40px;height:40px;border-radius:var(--radius-btn);
  border:1px solid var(--stroke);color:var(--text-2);
}
.scrim{
  position:fixed;inset:0;
  background:rgba(3,6,10,.6);
  backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;
  transition:.24s ease;
  z-index:85;
}
.scrim.is-open{opacity:1;visibility:visible;}

/* ---------- 面包屑 & 文章头 ---------- */
.page-top{padding:120px 0 0;}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--text-2);transition:color .18s ease;}
.breadcrumb a:hover{color:var(--accent-2);}
.crumb-sep{color:var(--text-3);}
.crumb-current{color:var(--text-1);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-hero{padding-bottom:34px;border-bottom:1px solid var(--stroke);}
.article-hero h1{
  font-size:clamp(32px,5vw,52px);
  line-height:1.16;
  letter-spacing:-.01em;
  margin-bottom:20px;
}
.meta-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--text-3);}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  padding:4px 10px;
  border-radius:var(--radius-badge);
  background:rgba(166,255,63,.12);
  color:var(--accent);
  border:1px solid var(--stroke-strong);
}
.badge--soft{
  background:var(--panel-2);
  color:var(--text-2);
  border-color:var(--stroke);
}
.meta-dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);}
.lede{
  margin-top:22px;
  font-size:17px;
  color:var(--text-2);
  max-width:760px;
}

/* ---------- 文章布局 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,760px) 260px;
  gap:56px;
  align-items:start;
  padding:56px 0 96px;
}
.article-main{min-width:0;}
.article-cover{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:var(--radius-img);
  border:1px solid var(--stroke);
  margin-bottom:36px;
  box-shadow:var(--shadow-card);
}
.prose{font-size:16px;line-height:1.9;color:#D8E4F0;}
.prose > *:first-child{margin-top:0;}
.prose p{margin:0 0 1.2em;}
.prose h2{
  font-size:26px;
  line-height:1.35;
  margin:2.1em 0 .8em;
  padding-left:14px;
  position:relative;
  scroll-margin-top:100px;
}
.prose h2::before{
  content:"";
  position:absolute;left:0;top:.2em;
  width:3px;height:20px;border-radius:3px;
  background:var(--accent);
  box-shadow:0 0 12px rgba(166,255,63,.5);
}
.prose h3{
  font-size:20px;
  margin:1.7em 0 .6em;
  color:var(--text-1);
}
.prose ul,.prose ol{margin:0 0 1.4em;padding-left:2px;}
.prose ul li{
  position:relative;
  padding-left:20px;
  margin-bottom:10px;
  color:#D8E4F0;
}
.prose ul li::before{
  content:"";
  position:absolute;left:4px;top:.72em;
  width:6px;height:6px;border-radius:50%;
  background:var(--accent-2);
  box-shadow:0 0 10px rgba(34,211,197,.5);
}
.prose ol{counter-reset:li;}
.prose ol li{
  position:relative;
  padding-left:34px;
  margin-bottom:12px;
  counter-increment:li;
}
.prose ol li::before{
  content:counter(li,decimal-leading-zero);
  position:absolute;left:0;top:.15em;
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--accent);
}
.prose blockquote{
  margin:1.6em 0;
  padding:18px 22px;
  background:var(--panel-2);
  border-left:3px solid var(--accent);
  border-radius:0 var(--radius-btn) var(--radius-btn) 0;
  color:var(--text-2);
}
.prose blockquote p:last-child{margin-bottom:0;}
.prose img{border-radius:var(--radius-img);margin:1.4em 0 .6em;}
.prose figure{margin:1.6em 0;}
.prose figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px;}
.prose a{color:var(--accent-2);border-bottom:1px solid rgba(34,211,197,.35);}
.prose a:hover{color:#5ee7db;border-bottom-color:#5ee7db;}
.prose table{
  width:100%;
  border-collapse:collapse;
  margin:1.6em 0;
  font-size:14px;
  display:block;
  overflow-x:auto;
  border:1px solid var(--stroke);
  border-radius:var(--radius-btn);
}
.prose th,.prose td{
  padding:12px 14px;
  border-bottom:1px solid var(--stroke);
  text-align:left;
  white-space:nowrap;
}
.prose th{background:var(--panel-2);color:var(--text-1);font-weight:600;}
.prose tbody tr:nth-child(even){background:rgba(255,255,255,.02);}
.prose hr{border:0;border-top:1px solid var(--stroke);margin:2.4em 0;}
.prose code{
  font-family:var(--font-mono);
  font-size:13px;
  padding:2px 6px;
  border-radius:var(--radius-badge);
  background:rgba(34,211,197,.1);
  color:var(--accent-2);
}

/* 目录 */
.toc{
  position:sticky;
  top:100px;
  background:var(--panel);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--stroke);
  border-radius:var(--radius-card);
  padding:22px 20px;
  box-shadow:var(--shadow-card),var(--inset-hi);
}
.toc-title{
  font-size:13px;
  letter-spacing:.08em;
  color:var(--text-3);
  margin-bottom:14px;
  display:flex;align-items:center;gap:8px;
}
.toc-title i{color:var(--accent);}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;
  font-size:14px;
  line-height:1.6;
  color:var(--text-2);
  padding:7px 10px;
  border-left:2px solid transparent;
  border-radius:0 8px 8px 0;
  transition:.18s ease;
}
.toc-list a:hover{background:var(--panel-2);color:var(--text-1);}
.toc-list a.is-active{
  color:var(--accent);
  border-left-color:var(--accent);
  background:rgba(166,255,63,.06);
}
.toc-list a.toc-h3{padding-left:22px;font-size:13px;color:var(--text-3);}

/* 空态 */
.empty-state{
  text-align:center;
  padding:72px 24px;
  border:1px dashed var(--stroke);
  border-radius:var(--radius-card);
  background:var(--panel-2);
}
.empty-state i{font-size:34px;color:var(--text-3);margin-bottom:16px;display:block;}
.empty-state p{color:var(--text-2);margin-bottom:20px;}

/* ---------- 上下篇 / 相关 ---------- */
.adjacent{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
  margin:8px 0 56px;
}
.adj-card{
  display:block;
  background:var(--panel);
  border:1px solid var(--stroke);
  border-radius:var(--radius-card);
  padding:22px;
  transition:.18s ease;
  box-shadow:var(--inset-hi);
}
.adj-card:hover{transform:translateY(-4px);border-color:var(--stroke-strong);box-shadow:var(--shadow-card);}
.adj-label{font-size:12px;color:var(--text-3);letter-spacing:.08em;display:block;margin-bottom:10px;}
.adj-title{font-size:16px;font-weight:600;color:var(--text-1);line-height:1.6;}
.adj-card span.arrow{color:var(--accent-2);font-size:13px;margin-top:12px;display:inline-flex;align-items:center;gap:6px;}

.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.card{
  display:flex;
  flex-direction:column;
  background:var(--panel);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--stroke);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card),var(--inset-hi);
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--stroke-strong);box-shadow:var(--shadow-pop);}
.card-media{overflow:hidden;aspect-ratio:16/9;background:var(--bg-1);}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-title{font-size:17px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-desc{
  font-size:14px;
  line-height:1.75;
  color:var(--text-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin:0;
}
.card-meta{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--text-3);margin-top:auto;}

/* ---------- CTA ---------- */
.cta-block{
  background:linear-gradient(120deg,rgba(166,255,63,.07),rgba(34,211,197,.06));
  border:1px solid var(--stroke);
  border-radius:var(--radius-card);
  padding:52px;
  display:grid;
  grid-template-columns:1.4fr .9fr;
  gap:40px;
  align-items:center;
  box-shadow:var(--shadow-card),var(--inset-hi);
}
.cta-block h2{font-size:clamp(24px,2.6vw,32px);line-height:1.3;margin-bottom:14px;}
.cta-block p{color:var(--text-2);margin-bottom:26px;max-width:520px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-side{
  background:var(--panel-2);
  border:1px solid var(--stroke);
  border-radius:var(--radius-card-sm);
  padding:24px;
}
.cta-side h3{font-size:16px;margin-bottom:16px;}
.cta-side ul{display:flex;flex-direction:column;gap:12px;}
.cta-side li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7;}
.cta-side i{color:var(--accent);margin-top:5px;}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--stroke);
  background:var(--bg-1);
  padding:72px 0 0;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:52px;
}
.footer-brand p{color:var(--text-2);font-size:14px;margin:18px 0 18px;max-width:320px;}
.footer-brand .logo{margin-bottom:4px;}
.footer-col h4{font-size:15px;margin-bottom:18px;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{color:var(--text-2);font-size:14px;transition:color .18s ease,transform .18s ease;display:inline-block;}
.footer-links a:hover{color:var(--accent-2);transform:translateX(2px);}
.footer-contact{display:flex;flex-direction:column;gap:14px;}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7;}
.footer-contact i{color:var(--accent-2);margin-top:5px;}
.link-more{display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-size:14px;font-weight:600;}
.link-more i{transition:transform .18s ease;}
.link-more:hover i{transform:translateX(3px);}
.footer-bottom{
  border-top:1px solid var(--stroke);
  padding:22px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--text-3);margin:0;}
.footer-bottom .tech{font-family:var(--font-mono);font-size:13px;color:var(--text-3);}

/* ---------- 浮动 CTA ---------- */
.float-bar{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:70;
  display:flex;
  flex-direction:column;
  align-items:flex-end;
  gap:12px;
  opacity:0;
  transform:translateY(14px);
  pointer-events:none;
  transition:opacity .22s ease,transform .22s ease;
}
.float-bar.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.to-top{
  width:42px;height:42px;
  border-radius:50%;
  border:1px solid var(--stroke);
  background:var(--panel);
  backdrop-filter:blur(12px);
  color:var(--text-2);
  display:grid;place-items:center;
  transition:.18s ease;
}
.to-top:hover{color:var(--accent);border-color:var(--stroke-strong);transform:translateY(-2px);}

@media (max-width:1024px){
  :root{--sec-pad:72px;}
  .nav-menu{display:none;}
  .nav-toggle{display:grid;place-items:center;}
  .nav-search.is-open .search-field{width:180px;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .toc{display:none;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
  .cta-block{grid-template-columns:1fr;padding:40px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:768px){
  :root{--sec-pad:56px;}
  .container{padding:0 18px;}
  .page-top{padding-top:100px;}
  .header-right .btn-primary{display:none;}
  .search-toggle{display:none;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .adjacent{grid-template-columns:minmax(0,1fr);}
  .card{border-radius:var(--radius-card-sm);}
  .cta-block{padding:28px;}
  .float-bar{
    right:0;left:0;bottom:0;
    flex-direction:row-reverse;
    justify-content:space-between;
    align-items:center;
    padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    background:rgba(10,18,29,.92);
    backdrop-filter:blur(14px);
    border-top:1px solid var(--stroke);
    gap:10px;
  }
  .float-bar .btn{flex:1;}
  .to-top{width:38px;height:38px;flex:none;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .article-hero h1{margin-bottom:16px;}
  .prose h2{font-size:22px;}
  .prose h3{font-size:18px;}
}
@media (max-width:480px){
  .logo-main{font-size:17px;}
  .logo-sub{font-size:10px;}
  .article-layout{padding-bottom:72px;}
}

/* roulang page: category1 */
:root{
  --bg-0:#05090F;
  --bg-1:#0A121D;
  --panel:rgba(18,30,46,.62);
  --panel-2:rgba(255,255,255,.045);
  --stroke:rgba(140,190,220,.14);
  --stroke-strong:rgba(166,255,63,.35);
  --accent:#A6FF3F;
  --accent-ink:#06110A;
  --accent-2:#22D3C5;
  --warn:#FF7A45;
  --text-1:#EAF2FA;
  --text-2:#9FB0C4;
  --text-3:#64768C;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:14px;
  --radius-badge:6px;
  --shadow-card:0 12px 40px -18px rgba(0,0,0,.75);
  --shadow-float:0 24px 60px -24px rgba(0,0,0,.8);
  --inset-hi:inset 0 1px 0 rgba(255,255,255,.06);
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"SF Mono",Consolas,monospace;
  --container:1200px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(900px 520px at 78% -8%, rgba(34,211,197,.08), transparent 62%),
    radial-gradient(760px 480px at 8% 4%, rgba(166,255,63,.06), transparent 60%);
  z-index:0;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit;color:inherit}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.25}
p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;position:relative;z-index:1}
@media (min-width:1441px){.container{max-width:1320px}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(5,9,15,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease;
}
.site-header.scrolled{background:rgba(5,9,15,.9);border-bottom-color:var(--stroke)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.header-left{display:flex;align-items:center;gap:26px;min-width:0}
.header-right{display:flex;align-items:center;gap:12px}
.logo{display:inline-flex;align-items:baseline;gap:6px;font-weight:700;font-size:17px;white-space:nowrap}
.logo-main{color:var(--text-1)}
.logo-sub{font-size:11.5px;font-weight:500;color:var(--accent);letter-spacing:.02em}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;padding:8px 12px;border-radius:8px;
  font-size:14.5px;color:var(--text-2);
  transition:color .18s ease,transform .18s ease;
}
.nav-link:hover{color:var(--text-1);transform:translateY(-1px)}
.nav-link.active{color:var(--accent)}
.nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--accent);border-radius:2px;
}
.search-wrap{display:flex;align-items:center;gap:0}
.search-toggle{
  width:38px;height:38px;border-radius:10px;border:1px solid transparent;
  background:transparent;color:var(--text-2);cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
  transition:color .18s,border-color .18s,background .18s;
}
.search-toggle:hover{color:var(--text-1);border-color:var(--stroke);background:var(--panel-2)}
.search-box{width:0;overflow:hidden;transition:width .28s ease}
.search-box.open{width:240px}
.search-input{
  width:100%;padding:9px 14px;border-radius:var(--radius-btn);
  background:var(--panel);border:1px solid var(--stroke);color:var(--text-1);
  backdrop-filter:blur(14px);box-shadow:var(--inset-hi);
}
.search-input::placeholder{color:var(--text-3)}
.search-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px rgba(166,255,63,.25)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;border-radius:var(--radius-btn);
  cursor:pointer;white-space:nowrap;
  transition:transform .18s ease-out,background .18s ease,border-color .18s ease,box-shadow .18s ease,color .18s ease;
}
.btn-primary{background:var(--accent);color:var(--accent-ink);border-radius:999px}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px var(--stroke-strong),0 10px 32px -10px rgba(166,255,63,.45);background:#B6FF5C}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--stroke);color:var(--text-1);border-radius:999px}
.btn-ghost:hover{border-color:var(--accent-2);background:rgba(255,255,255,.04);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-block{width:100%}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--accent-2);font-size:14px;font-weight:600;position:relative;cursor:pointer}
.link-more::after{content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:var(--accent-2);transition:width .25s ease}
.link-more:hover::after{width:100%}
.link-more i{transition:transform .2s ease}
.link-more:hover i{transform:translateX(3px)}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--stroke);background:var(--panel-2);color:var(--text-1);
  cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:var(--accent-2)}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:82vw;max-width:350px;
  background:var(--bg-1);border-left:1px solid var(--stroke);
  padding:22px 20px;transform:translateX(100%);transition:transform .3s ease;
  z-index:200;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--stroke);background:transparent;color:var(--text-2);cursor:pointer}
.drawer-close:hover{color:var(--text-1);border-color:var(--accent-2)}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-nav a{padding:12px 10px;border-radius:10px;color:var(--text-2);font-size:15px;transition:.18s}
.drawer-nav a:hover{background:var(--panel-2);color:var(--text-1)}
.drawer-nav a.active{color:var(--accent);background:rgba(166,255,63,.08)}
.drawer-extra{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.drawer-search{width:100%;padding:11px 14px;border-radius:var(--radius-btn);background:var(--panel-2);border:1px solid var(--stroke);color:var(--text-1)}
.backdrop{position:fixed;inset:0;background:rgba(2,5,9,.62);backdrop-filter:blur(2px);opacity:0;visibility:hidden;transition:.28s;z-index:190}
.backdrop.open{opacity:1;visibility:visible}

/* ---------- 内页 Hero ---------- */
.page-hero{
  position:relative;
  min-height:320px;
  display:flex;align-items:center;
  padding:calc(68px + 54px) 0 54px;
  background-image:linear-gradient(180deg,rgba(5,9,15,.82) 0%,rgba(5,9,15,.6) 55%,rgba(5,9,15,.94) 100%),url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--stroke);
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(140,190,220,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(140,190,220,.05) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,transparent,#000 40%,transparent);
  -webkit-mask-image:linear-gradient(180deg,transparent,#000 40%,transparent);
}
.hero-inner{position:relative;z-index:1;max-width:780px}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px;flex-wrap:wrap}
.crumb a{color:var(--text-2);transition:color .18s}
.crumb a:hover{color:var(--accent-2)}
.crumb span.sep{color:var(--text-3)}
.crumb span.current{color:var(--text-2)}
.page-hero h1{
  font-size:clamp(30px,4.6vw,50px);
  line-height:1.15;
  letter-spacing:-.01em;
  font-weight:700;
  margin-bottom:16px;
}
.page-hero .lede{font-size:17px;color:var(--text-2);max-width:640px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 12px;font-size:12.5px;border-radius:var(--radius-badge);
  background:rgba(166,255,63,.12);color:var(--accent);
  border:1px solid rgba(166,255,63,.2);
}
.tag.muted{background:var(--panel-2);color:var(--text-2);border-color:var(--stroke)}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;position:relative}
.section.alt{background:var(--bg-1);border-top:1px solid var(--stroke);border-bottom:1px solid var(--stroke)}
.section-head{max-width:720px;margin-bottom:44px}
.section-head h2{
  font-size:clamp(24px,3.1vw,34px);
  padding-left:16px;position:relative;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.28em;width:2px;height:18px;background:var(--accent);border-radius:2px;
}
.section-head p{margin-top:12px;color:var(--text-2);font-size:15.5px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;
  color:var(--accent-2);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent-2);border-radius:2px}

/* ---------- 主体分栏 ---------- */
.split{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:48px;align-items:start}
.article-body p{color:var(--text-2);font-size:16px;line-height:1.9;max-width:38em}
.article-body p + p{margin-top:1.2em}
.article-body .lead-strong{color:var(--text-1);font-size:17.5px}
.block-title{font-size:20px;margin:40px 0 18px;display:flex;align-items:center;gap:10px}
.block-title::before{content:"";width:3px;height:16px;background:var(--accent);border-radius:2px}

.point-list{display:flex;flex-direction:column;gap:14px}
.point-row{
  display:flex;align-items:flex-start;gap:16px;
  padding:18px 20px;border-radius:var(--radius-img);
  background:var(--panel-2);border:1px solid var(--stroke);
  transition:border-color .18s ease,transform .18s ease,background .18s ease;
}
.point-row:hover{border-color:var(--stroke-strong);transform:translateX(3px);background:rgba(255,255,255,.06)}
.point-num{
  font-family:var(--font-mono);font-size:14px;color:var(--accent);
  padding-top:2px;min-width:26px;letter-spacing:.04em;
}
.point-text strong{display:block;font-size:15.5px;margin-bottom:4px;color:var(--text-1)}
.point-text span{font-size:14px;color:var(--text-2);line-height:1.75}

/* 流程 */
.steps{position:relative;padding-left:4px}
.step{position:relative;display:grid;grid-template-columns:60px minmax(0,1fr);gap:20px;padding-bottom:30px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:29px;top:44px;bottom:0;width:1px;
  background:linear-gradient(180deg,var(--stroke),transparent);
}
.step:last-child::before{display:none}
.step-no{
  width:44px;height:44px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:14px;
  background:var(--panel);border:1px solid var(--stroke);
  color:var(--accent);box-shadow:var(--inset-hi);
}
.step-body h3{font-size:16.5px;margin-bottom:6px}
.step-body p{font-size:14.5px;color:var(--text-2);line-height:1.8}

/* 右侧粘性卡 */
.sticky-card{position:sticky;top:96px}
.glass{
  background:var(--panel);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--stroke);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card),var(--inset-hi);
}
.side-card{padding:26px 24px}
.side-card h3{font-size:17px;margin-bottom:8px}
.side-card .side-desc{font-size:14px;color:var(--text-2);margin-bottom:20px}
.side-list{margin-top:22px;padding-top:20px;border-top:1px solid var(--stroke);display:flex;flex-direction:column;gap:12px}
.side-link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 14px;border-radius:12px;
  background:var(--panel-2);border:1px solid var(--stroke);
  font-size:14px;color:var(--text-2);
  transition:color .18s,border-color .18s,transform .18s;
}
.side-link:hover{color:var(--text-1);border-color:var(--accent-2);transform:translateX(3px)}
.side-link i{color:var(--accent-2);font-size:12px}
.side-note{margin-top:18px;font-size:13px;color:var(--text-3);line-height:1.7}

/* ---------- 适用场景 图文 ---------- */
.scene-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:56px;align-items:center}
.scene-figure{position:relative;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--stroke);box-shadow:var(--shadow-card)}
.scene-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11}
.scene-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,9,15,.15),rgba(5,9,15,.62));
}
.scene-figure figcaption{
  position:absolute;left:18px;bottom:16px;right:18px;z-index:2;
  font-size:13px;color:var(--text-2);
}
.scene-list{display:flex;flex-direction:column;gap:18px;margin-top:24px}
.scene-item{display:flex;gap:14px;align-items:flex-start}
.scene-item i{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(34,211,197,.12);color:var(--accent-2);font-size:14px;
  border:1px solid rgba(34,211,197,.22);
}
.scene-item strong{display:block;font-size:15.5px;margin-bottom:3px}
.scene-item span{font-size:14px;color:var(--text-2);line-height:1.75}

/* ---------- 异常处理列表 ---------- */
.trouble-list{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--stroke)}
.trouble-item{
  display:grid;grid-template-columns:220px minmax(0,1fr) auto;gap:24px;align-items:center;
  padding:22px 8px 22px 18px;border-bottom:1px solid var(--stroke);
  position:relative;transition:background .18s ease;
}
.trouble-item::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:2px;
  background:transparent;transition:background .18s ease;
}
.trouble-item:hover{background:var(--panel-2)}
.trouble-item:hover::before{background:var(--accent)}
.trouble-item h3{font-size:16px;display:flex;align-items:center;gap:9px}
.trouble-item h3 i{color:var(--warn);font-size:14px}
.trouble-item p{font-size:14px;color:var(--text-2);line-height:1.8}
.trouble-badge{
  font-family:var(--font-mono);font-size:12px;color:var(--accent-2);
  padding:5px 10px;border-radius:var(--radius-badge);
  background:var(--panel-2);border:1px solid var(--stroke);white-space:nowrap;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{
  background:var(--panel);
  backdrop-filter:blur(14px);
  border:1px solid var(--stroke);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card),var(--inset-hi);
  margin-bottom:14px;overflow:hidden;
  transition:border-color .2s ease;
}
.faq-item.open{border-color:var(--stroke-strong)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--text-1);position:relative;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:2px;
  background:var(--stroke);transition:background .2s ease;
}
.faq-item.open .faq-q::before{background:var(--accent)}
.faq-q i{color:var(--text-3);font-size:13px;transition:transform .25s ease,color .25s ease;flex:0 0 auto}
.faq-item.open .faq-q i{transform:rotate(90deg);color:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 22px 22px 22px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* ---------- CTA ---------- */
.cta-block{
  padding:52px 48px;
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:center;
  background:linear-gradient(120deg,rgba(18,30,46,.78),rgba(10,18,29,.62));
  backdrop-filter:blur(14px);
  border:1px solid var(--stroke);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-float),var(--inset-hi);
  position:relative;overflow:hidden;
}
.cta-block::before{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(166,255,63,.16),transparent 68%);
}
.cta-block h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px}
.cta-block p{color:var(--text-2);font-size:15px;max-width:46em}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:1}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--stroke);background:var(--bg-1);padding:64px 0 0;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:48px}
.footer-brand p{font-size:14px;color:var(--text-2);margin:16px 0 18px;max-width:34em;line-height:1.8}
.footer-brand .logo{font-size:18px}
.footer-col h4{font-size:14px;color:var(--text-1);margin-bottom:16px;letter-spacing:.02em}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--text-2);transition:color .18s,transform .18s;display:inline-block}
.footer-links a:hover{color:var(--accent-2);transform:translateX(3px)}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact li{display:flex;gap:10px;font-size:13.5px;color:var(--text-2);line-height:1.7}
.footer-contact i{color:var(--accent-2);margin-top:4px;font-size:13px}
.footer-bottom{
  border-top:1px solid var(--stroke);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p,.footer-bottom .tech{font-size:13px;color:var(--text-3)}
.footer-bottom .tech{font-family:var(--font-mono);letter-spacing:.04em}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-menu{display:none}
  .nav-toggle{display:inline-flex}
  .search-wrap{display:none}
  .split{grid-template-columns:minmax(0,1fr);gap:36px}
  .sticky-card{position:static}
  .scene-grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .trouble-item{grid-template-columns:180px minmax(0,1fr);gap:18px}
  .trouble-badge{grid-column:2;justify-self:start}
}
@media (max-width:768px){
  .section{padding:72px 0}
  .page-hero{padding:calc(68px + 38px) 0 40px;min-height:280px}
  .cta-block{grid-template-columns:minmax(0,1fr);padding:38px 26px}
  .header-right .btn-sm{display:none}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .trouble-item{grid-template-columns:minmax(0,1fr);padding:20px 6px 20px 16px}
  .trouble-badge{grid-column:1}
  .step{grid-template-columns:48px minmax(0,1fr);gap:16px}
  .step::before{left:23px;top:40px}
  .step-no{width:38px;height:38px;border-radius:10px}
}
@media (max-width:480px){
  .section{padding:56px 0}
  .container{padding:0 16px}
  .glass,.faq-item,.cta-block,.point-row{border-radius:14px}
  .page-hero h1{font-size:27px}
  .cta-actions{flex-direction:column;align-items:stretch}
  .cta-actions .btn{width:100%}
}

/* roulang page: category2 */
:root{
  --bg-0:#05090F;
  --bg-1:#0A121D;
  --panel:rgba(18,30,46,.62);
  --panel-2:rgba(255,255,255,.045);
  --stroke:rgba(140,190,220,.14);
  --stroke-strong:rgba(166,255,63,.35);
  --accent:#A6FF3F;
  --accent-ink:#06110A;
  --accent-2:#22D3C5;
  --warn:#FF7A45;
  --text-1:#EAF2FA;
  --text-2:#9FB0C4;
  --text-3:#64768C;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:14px;
  --radius-badge:6px;
  --shadow-card:0 12px 40px -18px rgba(0,0,0,.75);
  --shadow-float:0 24px 60px -24px rgba(0,0,0,.8);
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"SF Mono",Consolas,monospace;
  --nav-h:68px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(900px 520px at 12% -8%,rgba(34,211,197,.10),transparent 60%),
    radial-gradient(760px 460px at 92% 6%,rgba(166,255,63,.07),transparent 62%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:var(--accent-2);text-decoration:none;transition:color .18s ease-out;}
a:hover{color:var(--accent);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
button,input{font-family:inherit;font-size:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;box-shadow:0 0 0 4px rgba(166,255,63,.18);border-radius:6px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 24px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,border-color .18s ease-out,color .18s ease-out;
  white-space:nowrap;
}
.btn-primary{
  background:var(--accent);
  color:var(--accent-ink);
  border-radius:999px;
}
.btn-primary:hover{
  color:var(--accent-ink);
  transform:translateY(-2px);
  box-shadow:0 0 0 1px var(--stroke-strong),0 10px 32px -10px rgba(166,255,63,.45);
}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{
  background:transparent;
  border-color:var(--stroke);
  color:var(--text-1);
  border-radius:999px;
}
.btn-ghost:hover{
  border-color:rgba(34,211,197,.5);
  background:rgba(255,255,255,.04);
  color:var(--text-1);
  transform:translateY(-2px);
}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-block{width:100%;}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--accent-2);
  position:relative;
}
.link-more i{transition:transform .18s ease-out;}
.link-more:hover i{transform:translateX(4px);color:var(--accent);}
.link-underline{
  position:relative;
  font-size:14px;
  font-weight:600;
  color:var(--accent-2);
}
.link-underline::after{
  content:"";
  position:absolute;
  left:0;bottom:-3px;
  width:0;height:1px;
  background:var(--accent);
  transition:width .2s ease-out;
}
.link-underline:hover::after{width:100%;}

.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 10px;
  border-radius:var(--radius-badge);
  font-size:12px;
  line-height:1;
  letter-spacing:.04em;
  color:var(--accent);
  background:rgba(166,255,63,.12);
  border:1px solid rgba(166,255,63,.22);
}
.badge-cyan{
  color:var(--accent-2);
  background:rgba(34,211,197,.12);
  border-color:rgba(34,211,197,.25);
}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:90;
  height:var(--nav-h);
  background:rgba(5,9,15,.55);
  backdrop-filter:blur(10px);
  transition:background .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(8,14,23,.86);
  backdrop-filter:blur(14px);
  border-bottom-color:var(--stroke);
  box-shadow:0 10px 30px -22px rgba(0,0,0,.9);
}
.nav-wrap{
  height:var(--nav-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.logo{
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  white-space:nowrap;
  color:var(--text-1);
}
.logo:hover{color:var(--text-1);}
.logo-main{
  font-size:19px;
  font-weight:700;
  letter-spacing:.02em;
}
.logo-sub{
  font-size:12px;
  font-weight:500;
  color:var(--accent);
  letter-spacing:.08em;
}
.logo-mark{
  width:26px;height:26px;
  border-radius:8px;
  background:var(--accent);
  color:var(--accent-ink);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:13px;
  font-weight:800;
  transform:translateY(2px);
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:24px;
}
.nav-link{
  position:relative;
  padding:8px 12px;
  font-size:14.5px;
  font-weight:500;
  color:var(--text-2);
  border-radius:8px;
  transition:color .18s ease-out,transform .18s ease-out;
}
.nav-link:hover{color:var(--text-1);transform:translateY(-1px);}
.nav-link.active{color:var(--accent);}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--accent);
}
.nav-left{display:flex;align-items:center;min-width:0;}
.nav-right{display:flex;align-items:center;gap:12px;}
.search-btn{
  width:38px;height:38px;
  border-radius:10px;
  border:1px solid var(--stroke);
  color:var(--text-2);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:color .18s ease-out,border-color .18s ease-out,background .18s ease-out;
}
.search-btn:hover{color:var(--accent);border-color:var(--stroke-strong);background:rgba(255,255,255,.04);}
.search-box{
  width:0;
  opacity:0;
  overflow:hidden;
  transition:width .24s ease-out,opacity .24s ease-out;
}
.search-box.open{width:240px;opacity:1;}
.search-box input{
  width:100%;
  padding:10px 14px;
  border-radius:var(--radius-btn);
  border:1px solid var(--stroke);
  background:rgba(18,30,46,.72);
  color:var(--text-1);
  font-size:14px;
}
.search-box input::placeholder{color:var(--text-3);}
.search-box input:focus{outline:none;border-color:var(--stroke-strong);box-shadow:0 0 0 3px rgba(166,255,63,.16);}
.menu-btn{
  display:none;
  width:40px;height:40px;
  border-radius:10px;
  border:1px solid var(--stroke);
  color:var(--text-1);
  font-size:16px;
  align-items:center;
  justify-content:center;
}
.mobile-drawer{
  position:fixed;
  top:0;right:0;
  width:82vw;
  max-width:340px;
  height:100vh;
  background:rgba(9,16,26,.97);
  backdrop-filter:blur(16px);
  border-left:1px solid var(--stroke);
  padding:24px 22px 40px;
  transform:translateX(105%);
  transition:transform .28s ease-out;
  z-index:120;
  overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:22px;
}
.drawer-close{
  width:36px;height:36px;
  border-radius:10px;
  border:1px solid var(--stroke);
  color:var(--text-1);
}
.drawer-links{display:flex;flex-direction:column;gap:4px;margin-bottom:22px;}
.drawer-links a{
  padding:12px 14px;
  border-radius:10px;
  color:var(--text-2);
  font-size:15px;
  border-left:3px solid transparent;
}
.drawer-links a:hover,.drawer-links a.active{
  color:var(--text-1);
  background:var(--panel-2);
  border-left-color:var(--accent);
}
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(3,6,11,.68);
  opacity:0;
  visibility:hidden;
  transition:opacity .24s ease-out,visibility .24s ease-out;
  z-index:110;
}
.drawer-mask.open{opacity:1;visibility:visible;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  min-height:320px;
  padding:calc(var(--nav-h) + 58px) 0 56px;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(5,9,15,.86) 0%,rgba(5,9,15,.72) 55%,var(--bg-0) 100%);
}
.hero-grid-lines{
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(140,190,220,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(140,190,220,.07) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(60% 70% at 30% 40%,#000 20%,transparent 100%);
  opacity:.7;
}
.hero-inner{position:relative;z-index:2;max-width:820px;}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:18px;
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--accent-2);}
.breadcrumb .sep{color:var(--text-3);}
.hero h1{
  font-size:clamp(30px,4.4vw,48px);
  line-height:1.18;
  margin-bottom:16px;
}
.hero h1 em{
  font-style:normal;
  color:var(--accent);
}
.hero-sub{
  font-size:16.5px;
  color:var(--text-2);
  max-width:640px;
  margin-bottom:24px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}

/* ---------- 板块 ---------- */
.section{padding:96px 0;position:relative;}
.section.alt{background:var(--bg-1);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.12em;
  color:var(--accent-2);
  margin-bottom:14px;
  text-transform:uppercase;
}
.eyebrow::before{
  content:"";
  width:2px;height:18px;
  border-radius:2px;
  background:var(--accent);
}
.section-head.center .eyebrow{justify-content:center;}
.section h2{
  font-size:clamp(24px,3vw,34px);
  line-height:1.3;
  margin-bottom:14px;
}
.section-head p{color:var(--text-2);font-size:15.5px;max-width:38em;}
.section-title-bar{display:flex;align-items:center;gap:12px;}
.section-title-bar::before{
  content:"";
  width:2px;height:18px;
  background:var(--accent);
  border-radius:2px;
  flex:none;
}

/* ---------- 卡片 ---------- */
.guard-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.guard-card{
  background:var(--panel);
  backdrop-filter:blur(14px);
  border:1px solid var(--stroke);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  padding:28px 26px;
  transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
  display:flex;
  flex-direction:column;
}
.guard-card:hover{
  transform:translateY(-4px);
  border-color:var(--stroke-strong);
  box-shadow:0 18px 46px -20px rgba(0,0,0,.8),0 0 0 1px rgba(166,255,63,.22),inset 0 1px 0 rgba(255,255,255,.06);
}
.guard-icon{
  width:52px;height:52px;
  border-radius:14px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:20px;
  color:var(--accent-2);
  background:rgba(34,211,197,.10);
  border:1px solid rgba(34,211,197,.24);
  margin-bottom:20px;
}
.guard-card h3{font-size:20px;margin-bottom:10px;}
.guard-card p{color:var(--text-2);font-size:15px;margin-bottom:18px;}
.guard-card .card-foot{margin-top:auto;}

/* ---------- 图文分栏 ---------- */
.split{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:36px;
  align-items:start;
}
.figure-block{
  position:relative;
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--stroke);
  box-shadow:var(--shadow-card);
}
.figure-block img{
  width:100%;
  height:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:0;
}
.figure-caption{
  font-size:13px;
  color:var(--text-3);
  margin-top:12px;
}

/* ---------- 清单 ---------- */
.checklist{display:grid;gap:14px;}
.checklist li{
  display:grid;
  grid-template-columns:40px 1fr;
  gap:16px;
  align-items:start;
  padding:18px 20px;
  border-radius:14px;
  background:var(--panel-2);
  border:1px solid var(--stroke);
  border-left:3px solid transparent;
  transition:border-color .18s ease-out,background .18s ease-out,transform .18s ease-out;
}
.checklist li:hover{
  border-left-color:var(--accent);
  background:rgba(255,255,255,.06);
  transform:translateX(2px);
}
.checklist .num{
  font-family:var(--font-mono);
  font-size:14px;
  color:var(--accent);
  padding-top:3px;
  letter-spacing:.04em;
}
.checklist h3{font-size:16.5px;margin-bottom:6px;}
.checklist p{font-size:14.5px;color:var(--text-2);margin:0;}

/* ---------- 粘性卡 ---------- */
.sticky-card{
  position:sticky;
  top:calc(var(--nav-h) + 24px);
  background:var(--panel);
  backdrop-filter:blur(14px);
  border:1px solid var(--stroke);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  padding:28px 26px;
}
.sticky-card h3{font-size:19px;margin-bottom:10px;}
.sticky-card > p{font-size:14.5px;color:var(--text-2);margin-bottom:20px;}
.sticky-list{display:grid;gap:12px;margin:20px 0 22px;padding-top:20px;border-top:1px solid var(--stroke);}
.sticky-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text-2);line-height:1.7;}
.sticky-list i{color:var(--accent);font-size:12px;margin-top:7px;flex:none;}
.sticky-links{display:grid;gap:10px;font-size:14px;}

/* ---------- 步骤 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
  position:relative;
}
.steps::before{
  content:"";
  position:absolute;
  top:26px;left:8%;right:8%;
  height:1px;
  border-top:1px dashed var(--stroke);
}
.step{
  position:relative;
  background:var(--panel);
  backdrop-filter:blur(14px);
  border:1px solid var(--stroke);
  border-radius:var(--radius-card);
  padding:26px 24px;
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .18s ease-out,border-color .18s ease-out;
}
.step:hover{transform:translateY(-4px);border-color:var(--stroke-strong);}
.step .step-num{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.16em;
  color:var(--accent);
  display:inline-block;
  padding:5px 10px;
  border-radius:6px;
  background:rgba(166,255,63,.10);
  border:1px solid rgba(166,255,63,.22);
  margin-bottom:16px;
}
.step h3{font-size:18px;margin-bottom:8px;}
.step p{font-size:14.5px;color:var(--text-2);margin:0;}

/* ---------- 数据条 ---------- */
.stats{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1px;
  background:var(--stroke);
  border:1px solid var(--stroke);
  border-radius:var(--radius-card);
  overflow:hidden;
}
.stat{
  background:var(--bg-1);
  padding:28px 24px;
  transition:background .18s ease-out;
}
.stat:hover{background:rgba(18,30,46,.9);}
.stat .value{
  font-family:var(--font-mono);
  font-size:clamp(24px,2.6vw,32px);
  font-weight:700;
  color:var(--accent);
  line-height:1.2;
  display:block;
  margin-bottom:8px;
}
.stat .label{font-size:14px;color:var(--text-2);}
.stat .sub{font-size:12.5px;color:var(--text-3);margin-top:4px;display:block;}

/* ---------- 警示条 ---------- */
.notice{
  display:grid;
  grid-template-columns:52px 1fr;
  gap:18px;
  align-items:start;
  padding:24px 26px;
  border-radius:var(--radius-card);
  background:rgba(255,122,69,.07);
  border:1px solid rgba(255,122,69,.28);
  margin-top:32px;
}
.notice i{font-size:22px;color:var(--warn);margin-top:4px;}
.notice h3{font-size:17px;margin-bottom:8px;color:var(--text-1);}
.notice p{font-size:14.5px;color:var(--text-2);margin:0;}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;gap:12px;max-width:900px;}
.faq-item{
  background:var(--panel);
  backdrop-filter:blur(14px);
  border:1px solid var(--stroke);
  border-radius:14px;
  overflow:hidden;
  transition:border-color .18s ease-out;
}
.faq-item.open{border-color:var(--stroke-strong);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 22px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--text-1);
  border-left:3px solid transparent;
  transition:border-color .18s ease-out,color .18s ease-out;
}
.faq-item.open .faq-q{border-left-color:var(--accent);color:var(--accent);}
.faq-q:hover{color:var(--accent);}
.faq-q .ico{
  flex:none;
  width:24px;height:24px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:var(--accent);
  font-size:14px;
  transition:transform .22s ease-out;
}
.faq-item.open .faq-q .ico{transform:rotate(90deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease-out;
}
.faq-a p{
  padding:0 22px 22px 25px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
  margin:0;
}

/* ---------- CTA ---------- */
.cta-block{
  background:linear-gradient(120deg,rgba(18,30,46,.85),rgba(10,18,29,.9));
  backdrop-filter:blur(14px);
  border:1px solid var(--stroke);
  border-radius:24px;
  box-shadow:var(--shadow-float),inset 0 1px 0 rgba(255,255,255,.06);
  padding:52px 48px;
  display:grid;
  grid-template-columns:1.25fr .75fr;
  gap:40px;
  align-items:center;
  position:relative;
  overflow:hidden;
}
.cta-block::before{
  content:"";
  position:absolute;
  right:-80px;top:-80px;
  width:280px;height:280px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(166,255,63,.16),transparent 70%);
}
.cta-block h2{font-size:clamp(24px,2.8vw,32px);margin-bottom:14px;}
.cta-block p{color:var(--text-2);font-size:15.5px;margin-bottom:0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.cta-side{display:grid;gap:14px;position:relative;z-index:2;}
.mini-card{
  background:var(--panel-2);
  border:1px solid var(--stroke);
  border-radius:14px;
  padding:16px 18px;
  font-size:14px;
  color:var(--text-2);
  display:flex;
  gap:12px;
  align-items:flex-start;
}
.mini-card i{color:var(--accent-2);margin-top:5px;font-size:13px;}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--stroke);
  background:var(--bg-1);
  padding:64px 0 0;
  margin-top:0;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:44px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:32em;margin-bottom:16px;}
.footer-col h4{
  font-size:14px;
  color:var(--text-1);
  margin-bottom:16px;
  letter-spacing:.04em;
}
.footer-links{display:grid;gap:10px;}
.footer-links a{font-size:14px;color:var(--text-2);}
.footer-links a:hover{color:var(--accent-2);}
.footer-contact{display:grid;gap:12px;}
.footer-contact li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:13.5px;
  color:var(--text-2);
  line-height:1.7;
}
.footer-contact i{color:var(--accent-2);margin-top:6px;font-size:12px;flex:none;}
.footer-bottom{
  border-top:1px solid var(--stroke);
  padding:20px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--text-3);margin:0;}
.footer-bottom .tech{
  font-family:var(--font-mono);
  font-size:12.5px;
  color:var(--text-3);
  letter-spacing:.06em;
}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  display:flex;
  flex-direction:column;
  align-items:flex-end;
  gap:12px;
  z-index:80;
  opacity:0;
  transform:translateY(14px);
  pointer-events:none;
  transition:opacity .2s ease-out,transform .2s ease-out;
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.to-top{
  width:44px;height:44px;
  border-radius:50%;
  border:1px solid var(--stroke);
  background:rgba(10,18,29,.85);
  backdrop-filter:blur(10px);
  color:var(--text-2);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:color .18s ease-out,border-color .18s ease-out;
}
.to-top:hover{color:var(--accent);border-color:var(--stroke-strong);}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .section{padding:72px 0;}
  .split{grid-template-columns:1fr;gap:28px;}
  .sticky-card{position:static;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px;}
  .cta-block{grid-template-columns:1fr;padding:40px 32px;}
  .steps{grid-template-columns:1fr;gap:18px;}
  .steps::before{display:none;}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:860px){
  .nav-menu{display:none;}
  .menu-btn{display:inline-flex;}
  .search-box.open{width:170px;}
}
@media (max-width:768px){
  :root{--nav-h:56px;}
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .guard-grid{grid-template-columns:1fr;gap:16px;}
  .guard-card{border-radius:14px;padding:24px 20px;}
  .hero{min-height:260px;padding:calc(var(--nav-h) + 42px) 0 44px;}
  .hero-grid-lines{opacity:.45;}
  .cta-block{padding:32px 22px;border-radius:18px;}
  .cta-actions .btn{width:100%;}
  .float-cta{
    right:0;left:0;bottom:0;
    flex-direction:row;
    align-items:center;
    justify-content:space-between;
    padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    background:rgba(8,14,23,.94);
    border-top:1px solid var(--stroke);
    backdrop-filter:blur(14px);
    gap:10px;
  }
  .float-cta .btn{flex:1;}
  .site-footer{padding-bottom:64px;}
}
@media (max-width:520px){
  .logo-main{font-size:17px;}
  .logo-sub{font-size:11px;letter-spacing:.04em;}
  .stat{padding:22px 18px;}
  .stats{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .checklist li{grid-template-columns:32px 1fr;padding:16px;}
  .search-box{display:none;}
}

/* roulang page: category3 */
:root{
  --bg-0:#05090F;
  --bg-1:#0A121D;
  --panel:rgba(18,30,46,.62);
  --panel-2:rgba(255,255,255,.045);
  --stroke:rgba(140,190,220,.14);
  --stroke-strong:rgba(166,255,63,.35);
  --accent:#A6FF3F;
  --accent-ink:#06110A;
  --accent-2:#22D3C5;
  --warn:#FF7A45;
  --text-1:#EAF2FA;
  --text-2:#9FB0C4;
  --text-3:#64768C;
  --shadow-card:0 12px 40px -18px rgba(0,0,0,.75);
  --shadow-float:0 24px 60px -24px rgba(0,0,0,.8);
  --r-card:18px;
  --r-btn:12px;
  --r-input:12px;
  --r-img:14px;
  --r-badge:6px;
  --nav-h:68px;
  --sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,"SF Mono",Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(900px 520px at 82% -8%, rgba(34,211,197,.10), transparent 62%),
    radial-gradient(700px 420px at 6% 12%, rgba(166,255,63,.07), transparent 60%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;box-shadow:0 0 0 4px rgba(166,255,63,.22)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  height:var(--nav-h);
  z-index:80;
  display:flex;
  align-items:center;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(5,9,15,.78);
  backdrop-filter:blur(14px);
  border-bottom-color:var(--stroke);
}
.header-inner{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.header-left{display:flex;align-items:center;gap:34px;min-width:0}
.logo{display:inline-flex;align-items:baseline;gap:7px;white-space:nowrap;font-weight:700}
.logo-main{font-size:19px;letter-spacing:.01em;color:var(--text-1)}
.logo-sub{font-size:12px;color:var(--accent);letter-spacing:.08em}
.nav-menu{display:flex;align-items:center;gap:26px}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--text-2);
  padding:6px 0;
  transition:color .18s ease,transform .18s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:0;height:2px;
  background:var(--accent);
  transition:width .2s ease;
}
.nav-link:hover{color:var(--text-1);transform:translateY(-1px)}
.nav-link.active{color:var(--accent)}
.nav-link.active::after{width:18px}
.header-right{display:flex;align-items:center;gap:14px}
.search-wrap{display:flex;align-items:center;background:transparent;border:1px solid transparent;border-radius:999px;transition:border-color .2s ease,background .2s ease}
.search-wrap.open{border-color:var(--stroke);background:var(--panel-2)}
.search-btn{
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:0;border-radius:999px;
  color:var(--text-2);cursor:pointer;
  transition:color .18s ease;
}
.search-btn:hover{color:var(--accent)}
.search-input{
  width:0;opacity:0;padding:0;border:0;background:transparent;
  font-size:14px;color:var(--text-1);
  transition:width .22s ease,opacity .22s ease,padding .22s ease;
}
.search-input::placeholder{color:var(--text-3)}
.search-wrap.open .search-input{width:220px;opacity:1;padding:0 14px 0 4px}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--stroke);border-radius:var(--r-btn);
  color:var(--text-1);cursor:pointer;
}
.nav-toggle:hover{border-color:var(--stroke-strong);color:var(--accent)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:transform .18s ease,background .18s ease,border-color .18s ease,box-shadow .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:var(--accent-ink);border-radius:999px}
.btn-primary:hover{background:#b6ff5e;transform:translateY(-2px);box-shadow:0 0 0 1px var(--stroke-strong),0 10px 32px -10px rgba(166,255,63,.45)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:transparent;border-color:var(--stroke);color:var(--text-1)}
.btn-ghost:hover{border-color:rgba(34,211,197,.6);background:rgba(255,255,255,.04);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.link-more{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--accent-2);font-size:14px;font-weight:600;
  border-bottom:1px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.link-more:hover{color:var(--accent);border-bottom-color:var(--accent)}

/* ---------- badges & tags ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;
  font-size:12px;
  border-radius:var(--r-badge);
  background:rgba(166,255,63,.12);
  color:var(--accent);
  border:1px solid rgba(166,255,63,.22);
  letter-spacing:.02em;
}
.badge-cyan{background:rgba(34,211,197,.12);color:var(--accent-2);border-color:rgba(34,211,197,.25)}
.badge-muted{background:var(--panel-2);color:var(--text-2);border-color:var(--stroke)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  padding:8px 16px;
  font-size:14px;
  border-radius:999px;
  border:1px solid var(--stroke);
  background:var(--panel-2);
  color:var(--text-2);
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.tag:hover{border-color:rgba(34,211,197,.5);color:var(--text-1)}
.tag.active{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);font-weight:600}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  min-height:340px;
  display:flex;
  align-items:flex-end;
  padding:calc(var(--nav-h) + 42px) 0 48px;
  background-image:linear-gradient(rgba(5,9,15,.72),rgba(5,9,15,.9)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--stroke);
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(140,190,220,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(140,190,220,.06) 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.55;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;align-items:center;gap:10px;
  font-size:13px;color:var(--text-3);
  margin-bottom:18px;
}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:var(--text-3)}
.page-hero h1{
  font-size:clamp(30px,4.4vw,48px);
  line-height:1.16;
  max-width:22em;
  margin-bottom:16px;
}
.page-hero .hero-sub{
  max-width:640px;
  font-size:16px;
  color:var(--text-2);
  margin:0;
}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}

/* ---------- sections ---------- */
.section{padding:96px 0;position:relative;z-index:1}
.section-alt{background:var(--bg-1);border-top:1px solid var(--stroke);border-bottom:1px solid var(--stroke)}
.section-head{margin-bottom:40px;max-width:720px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.1em;color:var(--accent-2);
  margin-bottom:14px;text-transform:uppercase;
}
.section-title{
  position:relative;
  font-size:clamp(25px,3.1vw,34px);
  line-height:1.3;
  padding-left:16px;
  margin-bottom:14px;
}
.section-title::before{
  content:"";
  position:absolute;left:0;top:6px;
  width:2px;height:18px;
  background:var(--accent);
  border-radius:2px;
  box-shadow:0 0 12px rgba(166,255,63,.6);
}
.section-desc{color:var(--text-2);font-size:15.5px;margin:0}

/* ---------- stat strip ---------- */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--stroke);
  border:1px solid var(--stroke);
  border-radius:var(--r-card);
  overflow:hidden;
  margin-top:36px;
}
.stat-cell{
  background:var(--bg-0);
  padding:26px 24px;
}
.stat-num{
  font-family:var(--mono);
  font-size:30px;
  font-weight:700;
  color:var(--accent);
  line-height:1.1;
  margin-bottom:6px;
  letter-spacing:-.02em;
}
.stat-label{font-size:14px;color:var(--text-2)}

/* ---------- symptom bars ---------- */
.symptom-list{display:flex;flex-direction:column;gap:14px;margin-top:8px}
.symptom{
  display:grid;
  grid-template-columns:64px 1fr auto;
  align-items:center;
  gap:22px;
  padding:22px 26px;
  background:var(--panel);
  backdrop-filter:blur(14px);
  border:1px solid var(--stroke);
  border-radius:var(--r-card);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
  transition:transform .18s ease-out,border-color .18s ease-out;
}
.symptom:hover{transform:translateY(-4px);border-color:var(--stroke-strong)}
.symptom-num{
  font-family:var(--mono);
  font-size:22px;
  color:var(--accent-2);
  letter-spacing:-.02em;
}
.symptom-body h3{font-size:17px;margin-bottom:6px}
.symptom-body p{font-size:14.5px;color:var(--text-2);margin:0;max-width:60ch}
.symptom-go{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;color:var(--text-3);
  transition:color .18s ease,transform .18s ease;
}
.symptom:hover .symptom-go{color:var(--accent);transform:translateX(2px)}

/* ---------- faq layout ---------- */
.faq-layout{
  display:grid;
  grid-template-columns:minmax(0,8fr) minmax(0,4fr);
  gap:28px;
  align-items:start;
}
.faq-columns{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
  align-items:start;
}
.faq-col{display:flex;flex-direction:column;gap:16px;min-width:0}
.faq-item{
  background:var(--panel);
  backdrop-filter:blur(14px);
  border:1px solid var(--stroke);
  border-radius:var(--r-card);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
  overflow:hidden;
  transition:border-color .18s ease-out,transform .18s ease-out;
}
.faq-item:hover{border-color:var(--stroke-strong)}
.faq-item.open{border-color:var(--stroke-strong)}
.faq-q{
  position:relative;
  width:100%;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:16px;
  padding:20px 22px 20px 24px;
  background:transparent;
  border:0;
  text-align:left;
  cursor:pointer;
  font-size:15.5px;
  font-weight:600;
  line-height:1.6;
  color:var(--text-1);
}
.faq-q::before{
  content:"";
  position:absolute;
  left:0;top:20px;bottom:20px;
  width:3px;
  background:var(--stroke);
  border-radius:0 3px 3px 0;
  transition:background .2s ease,box-shadow .2s ease;
}
.faq-item.open .faq-q::before{background:var(--accent);box-shadow:0 0 14px rgba(166,255,63,.55)}
.faq-icon{
  flex-shrink:0;
  margin-top:3px;
  font-size:13px;
  color:var(--accent-2);
  transition:transform .25s ease,color .2s ease;
}
.faq-item.open .faq-icon{transform:rotate(90deg);color:var(--accent)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease,padding .3s ease;
  padding:0 24px 0 24px;
}
.faq-item.open .faq-a{padding-bottom:22px}
.faq-a p{font-size:15px;line-height:1.85;color:var(--text-2);margin:0}
.faq-a ul{margin-top:10px;display:flex;flex-direction:column;gap:8px}
.faq-a li{
  position:relative;
  padding-left:18px;
  font-size:14.5px;
  color:var(--text-2);
}
.faq-a li::before{
  content:"";
  position:absolute;left:2px;top:.72em;
  width:6px;height:6px;border-radius:50%;
  background:var(--accent-2);
}

/* ---------- sticky aside ---------- */
.sticky-aside{position:sticky;top:calc(var(--nav-h) + 24px);display:flex;flex-direction:column;gap:18px}
.help-card{
  background:var(--panel);
  backdrop-filter:blur(14px);
  border:1px solid var(--stroke);
  border-radius:var(--r-card);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
  padding:24px;
}
.help-card h3{font-size:17px;margin-bottom:10px}
.help-card p{font-size:14.5px;color:var(--text-2);margin-bottom:16px}
.help-cover{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:var(--r-img);
  margin-bottom:18px;
  border:1px solid var(--stroke);
}
.help-list{display:flex;flex-direction:column;gap:12px;margin:0 0 18px}
.help-list li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:14px;color:var(--text-2);
  line-height:1.7;
}
.help-list i{color:var(--accent-2);margin-top:5px;font-size:13px}
.help-card .btn{width:100%}
.help-card .btn + .btn{margin-top:10px}
.help-note{
  font-size:13px;
  color:var(--text-3);
  border-top:1px solid var(--stroke);
  padding-top:14px;
  margin-top:4px;
}

/* ---------- flow ---------- */
.flow-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  position:relative;
  margin-top:12px;
}
.flow-step{
  position:relative;
  padding:26px 22px;
  background:var(--panel-2);
  border:1px solid var(--stroke);
  border-radius:var(--r-card);
  transition:transform .18s ease-out,border-color .18s ease-out;
}
.flow-step:hover{transform:translateY(-4px);border-color:var(--stroke-strong)}
.flow-step::after{
  content:"";
  position:absolute;
  top:50%;right:-20px;
  width:20px;
  border-top:1px dashed var(--stroke);
}
.flow-step:last-child::after{display:none}
.flow-num{
  font-family:var(--mono);
  font-size:24px;
  color:var(--accent);
  letter-spacing:-.02em;
  margin-bottom:12px;
}
.flow-step h3{font-size:16.5px;margin-bottom:8px}
.flow-step p{font-size:14.5px;color:var(--text-2);margin:0}

/* ---------- checklist ---------- */
.check-panel{
  display:grid;
  grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:32px;
  align-items:center;
  background:var(--panel);
  backdrop-filter:blur(14px);
  border:1px solid var(--stroke);
  border-radius:var(--r-card);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
  padding:36px;
}
.check-panel h2{font-size:clamp(22px,2.6vw,28px);margin-bottom:12px;line-height:1.3}
.check-panel p{font-size:15px;color:var(--text-2);margin:0}
.check-list{display:flex;flex-direction:column;gap:12px}
.check-list li{
  display:flex;align-items:flex-start;gap:12px;
  padding:14px 18px;
  border-left:3px solid var(--stroke);
  background:var(--panel-2);
  border-radius:0 var(--r-btn) var(--r-btn) 0;
  font-size:14.5px;
  color:var(--text-2);
  transition:border-color .18s ease,color .18s ease,transform .18s ease;
}
.check-list li:hover{border-color:var(--accent);color:var(--text-1);transform:translateX(2px)}
.check-list i{color:var(--accent);margin-top:5px;font-size:13px}

/* ---------- cta ---------- */
.cta-panel{
  display:grid;
  grid-template-columns:minmax(0,6fr) minmax(0,6fr);
  gap:36px;
  background:var(--panel);
  backdrop-filter:blur(14px);
  border:1px solid var(--stroke);
  border-radius:var(--r-card);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-float);
  padding:44px;
  position:relative;
  overflow:hidden;
}
.cta-panel::before{
  content:"";
  position:absolute;
  top:-120px;right:-80px;
  width:320px;height:320px;
  background:radial-gradient(circle,rgba(166,255,63,.16),transparent 65%);
  pointer-events:none;
}
.cta-panel h2{font-size:clamp(23px,2.9vw,30px);line-height:1.3;margin-bottom:14px}
.cta-panel p{font-size:15px;color:var(--text-2);margin-bottom:22px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.form-grid{display:flex;flex-direction:column;gap:14px;position:relative;z-index:1}
.field{display:flex;flex-direction:column;gap:7px}
.field label{font-size:13.5px;color:var(--text-2)}
.field input,.field textarea{
  width:100%;
  padding:12px 14px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--stroke);
  border-radius:var(--r-input);
  color:var(--text-1);
  font-size:14.5px;
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:hover,.field textarea:hover{border-color:rgba(140,190,220,.3)}
.field input:focus,.field textarea:focus{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 2px rgba(166,255,63,.35);
  background:rgba(255,255,255,.06);
}
.field textarea{min-height:96px;resize:vertical}
.field.has-error input,.field.has-error textarea{border-color:var(--warn);box-shadow:0 0 0 2px rgba(255,122,69,.25)}
.field-error{font-size:13px;color:var(--warn);display:none}
.field.has-error .field-error{display:block}
.form-note{font-size:13px;color:var(--text-3);margin:0}
.form-ok{
  display:none;
  margin-top:12px;
  padding:12px 16px;
  font-size:14px;
  color:var(--accent);
  background:rgba(166,255,63,.1);
  border:1px solid rgba(166,255,63,.28);
  border-radius:var(--r-btn);
}
.form-ok.show{display:block}

/* ---------- floating cta ---------- */
.float-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:70;
  display:flex;
  flex-direction:column;
  align-items:flex-end;
  gap:10px;
  opacity:0;
  transform:translateY(14px);
  pointer-events:none;
  transition:opacity .2s ease,transform .2s ease;
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto}
.to-top{
  width:42px;height:42px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--panel);
  backdrop-filter:blur(14px);
  border:1px solid var(--stroke);
  border-radius:999px;
  color:var(--text-2);
  cursor:pointer;
  transition:color .18s ease,border-color .18s ease,transform .18s ease;
}
.to-top:hover{color:var(--accent);border-color:var(--stroke-strong);transform:translateY(-2px)}

/* ---------- footer ---------- */
.site-footer{
  background:var(--bg-1);
  border-top:1px solid var(--stroke);
  padding:64px 0 0;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:44px;
}
.footer-brand p{font-size:14px;color:var(--text-2);margin:16px 0 18px;max-width:34ch}
.footer-col h4{font-size:14px;color:var(--text-1);margin-bottom:16px;letter-spacing:.02em}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:var(--text-2);transition:color .18s ease,transform .18s ease}
.footer-links a:hover{color:var(--accent-2);transform:translateX(2px)}
.footer-contact{display:flex;flex-direction:column;gap:13px}
.footer-contact li{display:flex;gap:10px;font-size:13.5px;color:var(--text-2);line-height:1.7}
.footer-contact i{color:var(--accent-2);margin-top:5px;font-size:13px}
.footer-bottom{
  border-top:1px solid var(--stroke);
  padding:20px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--text-3);margin:0}
.footer-bottom .tech{font-family:var(--mono);font-size:12.5px;color:var(--text-3);letter-spacing:.04em}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;
  top:0;right:0;
  width:82vw;
  max-width:340px;
  height:100%;
  background:rgba(8,14,22,.97);
  backdrop-filter:blur(16px);
  border-left:1px solid var(--stroke);
  z-index:95;
  padding:88px 24px 32px;
  transform:translateX(104%);
  transition:transform .28s ease;
  display:flex;
  flex-direction:column;
  gap:18px;
}
.drawer.open{transform:translateX(0)}
.drawer .nav-link{font-size:16px;padding:10px 0;border-bottom:1px solid var(--stroke)}
.drawer .nav-link::after{display:none}
.drawer .nav-link.active{color:var(--accent)}
.drawer .btn{width:100%;margin-top:8px}
.drawer-search{
  display:flex;align-items:center;gap:10px;
  padding:10px 14px;
  background:var(--panel-2);
  border:1px solid var(--stroke);
  border-radius:var(--r-input);
}
.drawer-search input{
  flex:1;background:transparent;border:0;font-size:14px;color:var(--text-1);
}
.drawer-search input:focus{outline:none}
.drawer-search i{color:var(--text-3)}
.drawer-close{
  position:absolute;
  top:18px;right:20px;
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--stroke);border-radius:var(--r-btn);
  color:var(--text-2);cursor:pointer;
}
.drawer-close:hover{color:var(--accent);border-color:var(--stroke-strong)}
.overlay{
  position:fixed;inset:0;
  background:rgba(2,5,9,.6);
  z-index:90;
  opacity:0;pointer-events:none;
  transition:opacity .25s ease;
}
.overlay.show{opacity:1;pointer-events:auto}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-menu{display:none}
  .nav-toggle{display:inline-flex}
  .search-wrap{display:none}
  .header-right .btn{display:none}
  .faq-layout{grid-template-columns:1fr}
  .sticky-aside{position:static}
  .faq-columns{grid-template-columns:1fr 1fr}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .flow-step::after{display:none}
  .check-panel{grid-template-columns:1fr;padding:30px}
  .cta-panel{grid-template-columns:1fr;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .section{padding:72px 0}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .header-inner{padding:0 18px}
  .site-header{height:56px}
  :root{--nav-h:56px}
  .page-hero{padding:calc(var(--nav-h) + 34px) 0 36px;min-height:300px}
  .stat-strip{grid-template-columns:1fr 1fr}
  .faq-columns{grid-template-columns:1fr}
  .symptom{grid-template-columns:44px 1fr;gap:14px;padding:20px}
  .symptom-go{display:none}
  .flow-grid{grid-template-columns:1fr}
  .section{padding:56px 0}
  .faq-q{padding:18px 18px 18px 20px;font-size:15px}
  .faq-a{padding:0 20px}
  .float-cta{
    right:0;left:0;bottom:0;
    align-items:stretch;
    flex-direction:row-reverse;
    justify-content:space-between;
    padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    background:rgba(5,9,15,.92);
    backdrop-filter:blur(14px);
    border-top:1px solid var(--stroke);
    gap:12px;
  }
  .float-cta .btn{flex:1}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .logo-main{font-size:17px}
  .logo-sub{font-size:11px}
  .page-hero h1{font-size:27px}
  .stat-num{font-size:25px}
  .section-title{font-size:23px}
  .cta-panel{padding:24px}
  .check-panel{padding:24px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category4 */
:root{
  --bg-0:#05090F;
  --bg-1:#0A121D;
  --panel:rgba(18,30,46,.62);
  --panel-2:rgba(255,255,255,.045);
  --stroke:rgba(140,190,220,.14);
  --stroke-strong:rgba(166,255,63,.35);
  --accent:#A6FF3F;
  --accent-ink:#06110A;
  --accent-2:#22D3C5;
  --warn:#FF7A45;
  --text-1:#EAF2FA;
  --text-2:#9FB0C4;
  --text-3:#64768C;
  --shadow-card:0 12px 40px -18px rgba(0,0,0,.75);
  --shadow-pop:0 24px 60px -24px rgba(0,0,0,.8);
  --r-card:18px;
  --r-btn:12px;
  --r-img:14px;
  --r-badge:6px;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,"SF Mono",Consolas,Menlo,monospace;
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font: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(--accent);outline-offset:2px;box-shadow:0 0 0 4px rgba(166,255,63,.18);border-radius:8px;}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;}
@media (min-width:1441px){.container{max-width:1320px;}}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,border-color .18s ease-out,color .18s ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:var(--accent-ink);}
.btn-primary:hover{background:#b8ff63;transform:translateY(-2px);box-shadow:0 0 0 1px var(--stroke-strong),0 10px 32px -10px rgba(166,255,63,.45);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{background:transparent;border-color:var(--stroke);color:var(--text-1);}
.btn-ghost:hover{border-color:var(--accent-2);background:rgba(255,255,255,.04);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-pill{border-radius:999px;}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--accent-2);font-size:14px;font-weight:600;}
.link-more i{transition:transform .18s ease-out;}
.link-more:hover i{transform:translateX(3px);}
.link-underline{position:relative;color:var(--accent-2);font-size:14px;}
.link-underline::after{content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;background:var(--accent-2);transition:width .2s ease-out;}
.link-underline:hover::after{width:100%;}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:70;
  height:68px;background:rgba(5,9,15,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.site-header.is-scrolled{border-bottom-color:var(--stroke);box-shadow:0 12px 30px -24px rgba(0,0,0,.9);}
.header-inner{height:68px;display:flex;align-items:center;gap:28px;}
.logo{display:inline-flex;align-items:baseline;gap:6px;flex-shrink:0;}
.logo-main{font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--text-1);}
.logo-sub{font-size:11px;font-weight:600;color:var(--accent);letter-spacing:.06em;}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:14px;}
.nav-link{
  position:relative;padding:9px 12px;border-radius:10px;font-size:14.5px;color:var(--text-2);
  transition:color .18s ease-out,transform .18s ease-out,background .18s ease-out;
}
.nav-link:hover{color:var(--text-1);transform:translateY(-1px);background:rgba(255,255,255,.04);}
.nav-link.active{color:var(--accent);}
.nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--accent);
}
.header-tools{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-toggle{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--stroke);
  background:var(--panel-2);color:var(--text-2);cursor:pointer;
  transition:color .18s ease-out,border-color .18s ease-out,background .18s ease-out;
}
.search-toggle:hover{color:var(--accent);border-color:var(--stroke-strong);background:rgba(166,255,63,.08);}
.search-box{width:0;overflow:hidden;transition:width .22s ease-out;}
.search-box.is-open{width:240px;}
.search-box input{
  width:240px;height:38px;padding:0 14px;border-radius:var(--r-btn);
  background:var(--panel);border:1px solid var(--stroke);color:var(--text-1);
  backdrop-filter:blur(14px);
}
.search-box input::placeholder{color:var(--text-3);}
.search-box input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px rgba(166,255,63,.25);}
.nav-toggle{
  display:none;width:40px;height:38px;border-radius:10px;border:1px solid var(--stroke);
  background:var(--panel-2);cursor:pointer;padding:0;position:relative;
}
.nav-toggle span{
  position:absolute;left:11px;right:11px;height:2px;border-radius:2px;background:var(--text-1);
  transition:transform .22s ease-out,opacity .22s ease-out,top .22s ease-out;
}
.nav-toggle span:nth-child(1){top:13px;}
.nav-toggle span:nth-child(2){top:18px;}
.nav-toggle span:nth-child(3){top:23px;}
.nav-toggle.is-open span:nth-child(1){top:18px;transform:rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){top:18px;transform:rotate(-45deg);}

/* ---------- Mobile drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(5,9,15,.6);backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;transition:opacity .22s ease-out,visibility .22s ease-out;z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:340px;z-index:90;
  background:var(--bg-1);border-left:1px solid var(--stroke);
  padding:86px 22px 32px;overflow-y:auto;
  transform:translateX(100%);transition:transform .26s ease-out;
}
.mobile-drawer.is-open{transform:translateX(0);}
.mobile-drawer .nav-link{display:block;padding:13px 4px;font-size:16px;border-bottom:1px solid var(--stroke);border-radius:0;}
.mobile-drawer .nav-link.active::after{display:none;}
.mobile-drawer .btn{width:100%;margin-top:20px;}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;margin-top:0;padding:68px 0 0;
  min-height:320px;display:flex;align-items:center;
  background:
    linear-gradient(180deg,rgba(5,9,15,.55) 0%,rgba(5,9,15,.86) 72%,var(--bg-0) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom:1px solid var(--stroke);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(140,190,220,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(140,190,220,.07) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.8),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.8),transparent 78%);
}
.page-hero .container{position:relative;z-index:2;padding-top:26px;padding-bottom:34px;}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:16px;}
.crumbs a{color:var(--text-3);}
.crumbs a:hover{color:var(--accent-2);}
.crumbs .sep{opacity:.6;}
.page-hero h1{
  font-size:clamp(32px,5vw,56px);line-height:1.15;font-weight:700;letter-spacing:-.01em;
  max-width:22ch;
}
.page-hero .lede{margin-top:16px;max-width:62ch;color:var(--text-2);font-size:16.5px;line-height:1.8;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}

/* ---------- Badges / tags ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-badge);font-size:12px;font-weight:600;
  background:rgba(166,255,63,.12);color:var(--accent);border:1px solid rgba(166,255,63,.2);
}
.badge-ghost{background:var(--panel-2);color:var(--text-2);border-color:var(--stroke);}
.badge-cyan{background:rgba(34,211,197,.12);color:var(--accent-2);border-color:rgba(34,211,197,.24);}

/* ---------- Sections ---------- */
.section{padding:96px 0;position:relative;}
.section-alt{background:var(--bg-1);border-top:1px solid var(--stroke);border-bottom:1px solid var(--stroke);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-title{
  position:relative;padding-left:16px;font-size:clamp(26px,3.2vw,36px);line-height:1.25;font-weight:700;
}
.section-title::before{
  content:"";position:absolute;left:0;top:.28em;width:2px;height:18px;border-radius:2px;background:var(--accent);
}
.section-sub{margin-top:14px;color:var(--text-2);font-size:15.5px;line-height:1.8;max-width:62ch;}

/* ---------- Filter tags ---------- */
.filter-bar{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  padding:14px;border-radius:var(--r-card);border:1px solid var(--stroke);
  background:var(--panel);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  margin-bottom:28px;
}
.filter-label{font-size:13px;color:var(--text-3);margin-right:4px;}
.chip{
  padding:7px 14px;border-radius:999px;border:1px solid var(--stroke);
  background:var(--panel-2);color:var(--text-2);font-size:13.5px;cursor:pointer;
  transition:color .18s ease-out,border-color .18s ease-out,background .18s ease-out,transform .18s ease-out;
}
.chip:hover{color:var(--text-1);border-color:var(--stroke-strong);transform:translateY(-1px);}
.chip.is-active{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);font-weight:600;}

/* ---------- Feed rows ---------- */
.feed{border-top:1px solid var(--stroke);}
.feed-row{
  display:grid;grid-template-columns:240px 1fr auto;gap:24px;align-items:center;
  padding:22px 18px;border-bottom:1px solid var(--stroke);border-radius:12px;
  transition:background .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.feed-row:hover{background:var(--panel-2);transform:translateY(-2px);}
.feed-row:hover .feed-thumb img{transform:scale(1.03);}
.feed-thumb{
  position:relative;width:240px;aspect-ratio:16/9;border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--stroke);background:var(--panel);
}
.feed-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease-out;}
.feed-thumb .tag-on{
  position:absolute;left:10px;bottom:10px;
  padding:3px 9px;border-radius:var(--r-badge);font-size:11.5px;font-weight:600;
  background:rgba(5,9,15,.72);color:var(--accent);border:1px solid rgba(166,255,63,.28);
  backdrop-filter:blur(8px);
}
.feed-body h3{font-size:19px;line-height:1.4;font-weight:600;margin:10px 0 8px;transition:color .18s ease-out;}
.feed-row:hover .feed-body h3{color:var(--accent);}
.feed-body p{color:var(--text-2);font-size:14.5px;line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.feed-meta{display:flex;flex-direction:column;align-items:flex-end;gap:14px;min-width:96px;}
.feed-meta .time{font-family:var(--mono);font-size:13px;color:var(--text-3);white-space:nowrap;}
.feed-meta .arrow{
  width:34px;height:34px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--stroke);color:var(--text-2);transition:transform .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.feed-row:hover .feed-meta .arrow{transform:translateX(3px);color:var(--accent);border-color:var(--stroke-strong);}
.feed-empty{
  display:none;flex-direction:column;align-items:center;gap:12px;
  padding:56px 20px;color:var(--text-2);text-align:center;
}
.feed-empty i{font-size:30px;color:var(--text-3);}

/* ---------- Rhythm timeline ---------- */
.rhythm{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;margin-top:8px;}
.rhythm::before{
  content:"";position:absolute;top:26px;left:6%;right:6%;height:1px;
  background:repeating-linear-gradient(90deg,var(--stroke) 0 8px,transparent 8px 16px);
}
.rhythm-item{position:relative;padding-top:60px;}
.rhythm-item .num{
  position:absolute;top:0;left:0;
  font-family:var(--mono);font-size:15px;font-weight:700;color:var(--accent);
  width:52px;height:52px;border-radius:50%;display:grid;place-items:center;
  background:var(--bg-0);border:1px solid var(--stroke-strong);
}
.rhythm-item h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.rhythm-item p{color:var(--text-2);font-size:14.5px;line-height:1.75;}

/* ---------- Info strips ---------- */
.strips{display:grid;gap:14px;}
.strip{
  display:grid;grid-template-columns:56px 1fr auto;gap:18px;align-items:center;
  padding:20px 22px;border-radius:var(--r-card);border:1px solid var(--stroke);
  background:var(--panel);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
  transition:transform .18s ease-out,border-color .18s ease-out;
}
.strip:hover{transform:translateY(-4px);border-color:var(--stroke-strong);}
.strip .snum{
  font-family:var(--mono);font-size:16px;font-weight:700;color:var(--accent);
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:rgba(166,255,63,.1);border:1px solid rgba(166,255,63,.22);
}
.strip h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.strip p{color:var(--text-2);font-size:14.5px;line-height:1.75;}
.strip .sarrow{color:var(--text-3);transition:transform .18s ease-out,color .18s ease-out;}
.strip:hover .sarrow{transform:translateX(3px);color:var(--accent);}

/* ---------- Cards grid ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  padding:26px;border-radius:var(--r-card);border:1px solid var(--stroke);
  background:var(--panel);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
  transition:transform .18s ease-out,border-color .18s ease-out;
}
.card:hover{transform:translateY(-4px);border-color:var(--stroke-strong);}
.card .ic{
  width:46px;height:46px;border-radius:12px;display:grid;place-items:center;
  background:rgba(34,211,197,.1);color:var(--accent-2);border:1px solid rgba(34,211,197,.22);
  font-size:18px;margin-bottom:18px;
}
.card h3{font-size:18px;font-weight:600;margin-bottom:10px;}
.card p{color:var(--text-2);font-size:14.5px;line-height:1.78;}

/* ---------- Notice banner ---------- */
.notice{
  display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center;
  padding:36px;border-radius:var(--r-card);
  border:1px solid var(--stroke);background:var(--panel);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
}
.notice h2{font-size:24px;font-weight:700;line-height:1.3;margin-bottom:12px;}
.notice p{color:var(--text-2);font-size:15px;line-height:1.8;}
.notice-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}
.notice-side{
  padding:22px;border-radius:14px;border:1px solid var(--stroke);background:var(--panel-2);
}
.notice-side .k{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--accent);}
.notice-side .l{font-size:13px;color:var(--text-3);margin-top:6px;}
.notice-side .rowdiv{height:1px;background:var(--stroke);margin:16px 0;}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:12px;}
.faq-item{
  border-radius:var(--r-card);border:1px solid var(--stroke);background:var(--panel);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  overflow:hidden;transition:border-color .18s ease-out;
}
.faq-item.is-open{border-color:var(--stroke-strong);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;text-align:left;
  padding:18px 20px;background:transparent;border:0;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--text-1);
}
.faq-q::before{content:"";width:3px;height:18px;border-radius:2px;background:var(--stroke);transition:background .18s ease-out;flex-shrink:0;}
.faq-item.is-open .faq-q::before{background:var(--accent);}
.faq-q .ico{margin-left:auto;color:var(--text-3);transition:transform .22s ease-out,color .18s ease-out;font-size:14px;}
.faq-item.is-open .faq-q .ico{transform:rotate(90deg);color:var(--accent);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease-out;}
.faq-a p{padding:0 20px 20px 37px;color:var(--text-2);font-size:15px;line-height:1.8;}

/* ---------- CTA ---------- */
.cta-block{
  position:relative;overflow:hidden;
  padding:52px 44px;border-radius:var(--r-card);border:1px solid var(--stroke);
  background:linear-gradient(135deg,rgba(18,30,46,.82),rgba(10,18,29,.9));
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-pop);
  display:grid;grid-template-columns:1.3fr 1fr;gap:36px;align-items:center;
}
.cta-block::before{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(166,255,63,.16),transparent 68%);
}
.cta-block h2{font-size:clamp(24px,2.6vw,32px);line-height:1.3;font-weight:700;position:relative;}
.cta-block p{color:var(--text-2);font-size:15px;margin-top:12px;position:relative;line-height:1.8;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;}
.cta-actions .btn{flex:1 1 auto;min-width:150px;}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--stroke);background:var(--bg-0);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px;}
.footer-brand p{color:var(--text-2);font-size:14px;line-height:1.8;margin:16px 0 18px;max-width:36ch;}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--text-1);}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:var(--text-2);font-size:14px;transition:color .18s ease-out,transform .18s ease-out;display:inline-block;}
.footer-links a:hover{color:var(--accent-2);transform:translateX(2px);}
.footer-contact{display:flex;flex-direction:column;gap:12px;}
.footer-contact li{display:flex;gap:10px;color:var(--text-2);font-size:13.5px;line-height:1.7;}
.footer-contact i{color:var(--accent-2);margin-top:4px;flex-shrink:0;}
.footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid var(--stroke);
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
}
.footer-bottom p,.footer-bottom .tech{font-size:13px;color:var(--text-3);}
.footer-bottom .tech{font-family:var(--mono);}

/* ---------- Float CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:60;
  display:flex;flex-direction:column;align-items:flex-end;gap:12px;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s ease-out;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top{
  width:42px;height:42px;border-radius:50%;border:1px solid var(--stroke);
  background:var(--panel);backdrop-filter:blur(14px);color:var(--text-2);cursor:pointer;
  transition:color .18s ease-out,border-color .18s ease-out,transform .18s ease-out;
}
.to-top:hover{color:var(--accent);border-color:var(--stroke-strong);transform:translateY(-2px);}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .nav-menu{display:none;}
  .nav-toggle{display:block;}
  .search-box.is-open{width:180px;}
  .search-box input{width:180px;}
  .section{padding:72px 0;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .rhythm{grid-template-columns:repeat(2,1fr);}
  .rhythm::before{display:none;}
  .notice{grid-template-columns:1fr;padding:28px;}
  .cta-block{grid-template-columns:1fr;padding:40px 28px;}
  .feed-row{grid-template-columns:200px 1fr;gap:18px;}
  .feed-thumb{width:200px;}
  .feed-meta{grid-column:2;flex-direction:row;align-items:center;justify-content:space-between;min-width:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .header-inner{gap:14px;}
  .header-tools .btn-pill{display:none;}
  .search-toggle,.search-box{display:none;}
  .section{padding:56px 0;}
  .page-hero{min-height:260px;}
  .page-hero .container{padding-top:14px;padding-bottom:26px;}
  .feed-row{grid-template-columns:1fr;padding:18px 12px;}
  .feed-thumb{width:100%;}
  .feed-meta{grid-column:1;}
  .grid-3{grid-template-columns:1fr;}
  .rhythm{grid-template-columns:1fr;gap:20px;}
  .strip{grid-template-columns:44px 1fr;padding:18px;row-gap:6px;}
  .strip .sarrow{display:none;}
  .cta-actions .btn{flex:1 1 100%;}
  .float-cta{left:0;right:0;bottom:0;align-items:stretch;padding:10px 14px calc(10px + env(safe-area-inset-bottom));background:rgba(5,9,15,.92);border-top:1px solid var(--stroke);backdrop-filter:blur(14px);flex-direction:row-reverse;gap:10px;}
  .float-cta .btn{flex:1;}
  .to-top{width:42px;flex-shrink:0;}
  .site-footer{padding-bottom:88px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .card{padding:22px;}
  .notice-side .k{font-size:22px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}