/* roulang page: index */
:root{
  --ink-900:#060B12;
  --ink-800:#0B131D;
  --surface:#101A26;
  --surface-2:#16222F;
  --brand:#21E0B0;
  --brand-deep:#12B894;
  --brand-2:#7A5CFF;
  --accent:#FFB44D;
  --text:#E8F1F4;
  --text-2:#A6B7C4;
  --text-3:#6E8091;
  --line:rgba(255,255,255,.08);
  --glow:rgba(33,224,176,.35);
  --danger:#FF6B6B;
  --shadow:0 18px 48px rgba(0,0,0,.45),0 0 0 1px rgba(255,255,255,.06);
  --shadow-hover:0 26px 60px rgba(0,0,0,.55),0 0 0 1px rgba(33,224,176,.28);
  --radius:18px;
  --radius-sm:14px;
  --radius-btn:12px;
  --ease:.24s cubic-bezier(.22,.61,.36,1);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --mono:"Inter",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  background:var(--ink-900);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:3px solid var(--glow);outline-offset:2px;border-radius:8px}
::selection{background:rgba(33,224,176,.28)}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:#16222F}
::-webkit-scrollbar-thumb{background:#21E0B0;border-radius:8px}
*{scrollbar-color:#21E0B0 #16222F;scrollbar-width:thin}

.container{max-width:1240px;margin:0 auto;padding:0 24px;width:100%}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;letter-spacing:.2px;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#21E0B0,#12B894);
  color:#04140F;
  box-shadow:0 10px 30px rgba(33,224,176,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px rgba(33,224,176,.42)}
.btn-primary:active{transform:translateY(0);box-shadow:0 8px 20px rgba(33,224,176,.3)}
.btn-glass{
  background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  border:1px solid var(--line);
  color:var(--text);
  backdrop-filter:blur(14px) saturate(140%);
}
.btn-glass:hover{transform:translateY(-2px);border-color:rgba(33,224,176,.45);box-shadow:0 14px 34px rgba(0,0,0,.4)}
.btn-ghost{background:transparent;color:var(--brand);padding:0 8px;height:auto}
.btn-ghost:hover{color:#5CF0C8}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.btn-sm{height:40px;padding:0 18px;font-size:15px}

/* ============ 头部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  height:72px;
  background:rgba(6,11,18,.35);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:height var(--ease),background var(--ease),box-shadow var(--ease);
}
.site-header.is-stuck{
  height:60px;
  background:rgba(11,19,29,.92);
  box-shadow:0 14px 34px rgba(0,0,0,.45);
}
.nav{height:100%;display:flex;align-items:center;gap:28px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:30px;height:30px;border-radius:9px;
  background:linear-gradient(135deg,#21E0B0,#12B894);
  box-shadow:0 0 18px rgba(33,224,176,.45);
  display:grid;place-items:center;
  font-family:var(--mono);font-weight:700;font-size:14px;color:#04140F;
}
.logo-text{font-size:18px;font-weight:700;letter-spacing:.5px;line-height:1}
.logo-text small{display:block;font-size:11px;font-weight:400;color:var(--text-3);letter-spacing:1.6px;margin-top:3px}
.nav-list{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;display:block;padding:8px 12px;font-size:15px;font-weight:500;color:var(--text-2);
  border-radius:9px;transition:color var(--ease),background var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--text)}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,#21E0B0,#12B894);
  box-shadow:0 0 12px rgba(33,224,176,.7);
}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.icon-btn{
  width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--text-2);
  transition:color var(--ease),border-color var(--ease),background var(--ease);
}
.icon-btn:hover{color:var(--brand);border-color:rgba(33,224,176,.45);background:rgba(33,224,176,.06)}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);place-items:center;color:var(--text)}
.nav-toggle:hover{border-color:rgba(33,224,176,.45);color:var(--brand)}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;visibility:hidden;
  transition:opacity var(--ease);z-index:130;backdrop-filter:blur(2px);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);z-index:140;
  background:var(--ink-800);border-left:1px solid var(--line);
  transform:translateX(105%);transition:transform .3s cubic-bezier(.22,.61,.36,1);
  padding:22px 20px 32px;display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:12px}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);display:grid;place-items:center;color:var(--text-2)}
.drawer-close:hover{color:var(--brand);border-color:rgba(33,224,176,.45)}
.drawer-link{
  display:block;padding:13px 14px;border-radius:12px;font-size:16px;color:var(--text-2);
  border:1px solid transparent;transition:all var(--ease);
}
.drawer-link:hover,.drawer-link.is-active{background:rgba(33,224,176,.07);border-color:rgba(33,224,176,.28);color:var(--text)}
.drawer .btn{margin-top:16px;width:100%}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  min-height:min(88vh,760px);
  display:flex;align-items:center;
  padding:150px 0 72px;
  background-image:linear-gradient(90deg,rgba(6,11,18,.92),rgba(6,11,18,.30)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center right;
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:64px 64px;opacity:.5;
}
.hero::after{
  content:"";position:absolute;width:520px;height:520px;right:-140px;top:-120px;border-radius:50%;
  background:radial-gradient(circle,rgba(122,92,255,.28),transparent 68%);pointer-events:none;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center;width:100%}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:999px;
  background:rgba(33,224,176,.08);border:1px solid rgba(33,224,176,.3);
  color:var(--brand);font-size:13px;font-weight:500;margin-bottom:20px;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px var(--brand)}
h1,.hero h1{
  font-size:clamp(30px,5vw,54px);line-height:1.22;font-weight:700;letter-spacing:-.5px;
  margin-bottom:16px;
}
.hero h1 span{
  background:linear-gradient(135deg,#21E0B0,#12B894);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:18px;line-height:1.8;color:var(--text-2);max-width:520px;margin-bottom:28px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:38px}
.hero-stats{display:flex;gap:38px;flex-wrap:wrap;padding-top:24px;border-top:1px solid var(--line)}
.hero-stat b{display:block;font-family:var(--mono);font-size:26px;font-weight:700;color:var(--brand);text-shadow:0 0 22px rgba(33,224,176,.45);line-height:1.2}
.hero-stat span{font-size:13px;color:var(--text-3)}
.hero-visual{position:relative}
.hero-visual .frame{
  position:relative;border-radius:22px;overflow:hidden;
  border:1px solid rgba(255,255,255,.1);
  box-shadow:0 30px 70px rgba(0,0,0,.55),0 0 0 1px rgba(33,224,176,.14);
  aspect-ratio:16/11;background:var(--surface);
}
.hero-visual .frame img{width:100%;height:100%;object-fit:cover}
.hero-visual .glow{
  position:absolute;inset:auto -20px -26px -20px;height:120px;border-radius:50%;
  background:radial-gradient(ellipse at center,rgba(33,224,176,.30),transparent 70%);
  filter:blur(20px);z-index:-1;
}
.hero-chip{
  position:absolute;left:-18px;bottom:26px;
  display:flex;align-items:center;gap:10px;
  padding:12px 16px;border-radius:14px;
  background:linear-gradient(180deg,rgba(255,255,255,.10),rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.12);backdrop-filter:blur(14px) saturate(140%);
  box-shadow:0 16px 40px rgba(0,0,0,.45);
}
.hero-chip .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent)}
.hero-chip b{font-size:14px;font-weight:600}
.hero-chip small{display:block;font-size:12px;color:var(--text-3);line-height:1.5}

/* ============ 板块通用 ============ */
.section{padding:96px 0;position:relative}
.section + .section{border-top:1px solid var(--line)}
.section--soft{background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(255,255,255,0))}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head .eyebrow{
  display:block;font-size:13px;letter-spacing:2px;color:var(--brand);margin-bottom:10px;font-weight:500;
}
h2,.section-title{font-size:clamp(24px,3.2vw,34px);line-height:1.3;font-weight:700;letter-spacing:-.3px}
.section-sub{font-size:16px;color:var(--text-2);margin-top:12px;max-width:640px}
.link-more{font-size:15px;color:var(--brand);display:inline-flex;align-items:center;gap:6px;transition:gap var(--ease),color var(--ease)}
.link-more:hover{gap:10px;color:#5CF0C8}

/* ============ 焦点区 ============ */
.focus-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px}
.focus-card{
  position:relative;display:flex;flex-direction:column;
  border-radius:var(--radius);overflow:hidden;
  background:var(--surface);border:1px solid var(--line);
  box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.focus-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(33,224,176,.45)}
.focus-card--main .focus-media{aspect-ratio:16/9;overflow:hidden}
.focus-card--main .focus-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.focus-card--main:hover .focus-media img{transform:scale(1.04)}
.focus-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.focus-card h3{font-size:20px;line-height:1.4;font-weight:600}
.focus-card p{font-size:15px;line-height:1.8;color:var(--text-2)}
.focus-card--side{background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));backdrop-filter:blur(14px) saturate(140%)}
.focus-card--side .focus-body{justify-content:space-between}
.focus-side-icon{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  background:rgba(33,224,176,.1);border:1px solid rgba(33,224,176,.28);color:var(--brand);
}
.focus-num{font-family:var(--mono);font-size:13px;color:var(--text-3);letter-spacing:1px}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:500;color:var(--brand);
  background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  border:1px solid rgba(33,224,176,.28);
  width:fit-content;
}
.badge--accent{color:var(--accent);border-color:rgba(255,180,77,.35)}
.badge--violet{color:#B5A4FF;border-color:rgba(122,92,255,.35)}

/* ============ 服务要点卡 ============ */
.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.service-card{
  border-radius:var(--radius);overflow:hidden;background:var(--surface);
  border:1px solid var(--line);box-shadow:var(--shadow);
  display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(33,224,176,.45)}
.service-card .thumb{aspect-ratio:4/3;overflow:hidden;position:relative}
.service-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.service-card:hover .thumb img{transform:scale(1.05)}
.service-card .thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(6,11,18,.75))}
.service-card .svc-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.service-card h3{font-size:18px;font-weight:600;line-height:1.4}
.service-card p{font-size:15px;line-height:1.8;color:var(--text-2)}
.svc-link{margin-top:auto;font-size:15px;color:var(--brand);display:inline-flex;align-items:center;gap:6px;transition:gap var(--ease)}
.service-card:hover .svc-link{gap:10px}

/* ============ 最新信息 ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);
  box-shadow:var(--shadow);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(33,224,176,.45)}
.post-card__link{display:flex;flex-direction:column;gap:12px;padding:22px;height:100%}
.post-card__title{font-size:18px;font-weight:600;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card__desc{font-size:15px;line-height:1.8;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card__meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3)}
.post-card__read{color:var(--brand);font-size:14px;display:inline-flex;align-items:center;gap:6px;transition:transform var(--ease)}
.post-card:hover .post-card__read{transform:translateX(2px)}
.empty-state{
  grid-column:1/-1;text-align:center;padding:56px 24px;border-radius:var(--radius);
  border:1px dashed rgba(255,255,255,.14);background:rgba(255,255,255,.02);
  display:flex;flex-direction:column;align-items:center;gap:16px;
}
.empty-state svg{color:var(--brand);opacity:.8}
.empty-state p{color:var(--text-2);font-size:16px}

/* ============ 评价轮播 ============ */
.rail-wrap{position:relative}
.rail-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 22px;scrollbar-width:none;-ms-overflow-style:none;cursor:grab;
}
.rail-track::-webkit-scrollbar{display:none}
.rail-track.is-dragging{cursor:grabbing;scroll-snap-type:none}
.review-card{
  flex:0 0 360px;scroll-snap-align:start;
  border-radius:var(--radius);padding:22px;
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow);transition:border-color var(--ease),transform var(--ease);
  display:flex;flex-direction:column;gap:14px;
}
.review-card:hover{border-color:rgba(33,224,176,.45);transform:translateY(-4px)}
.review-head{display:flex;align-items:center;gap:12px}
.avatar{
  width:44px;height:44px;border-radius:999px;flex-shrink:0;display:grid;place-items:center;
  font-weight:700;font-size:16px;color:#04140F;
  background:linear-gradient(135deg,#21E0B0,#7A5CFF);
}
.review-head b{font-size:15px;font-weight:600;display:block;line-height:1.4}
.review-head small{font-size:13px;color:var(--text-3)}
.stars{color:var(--accent);letter-spacing:2px;font-size:15px;margin-left:auto}
.review-card p{font-size:15px;line-height:1.8;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.review-time{font-size:13px;color:var(--text-3);margin-top:auto}
.rail-nav{display:flex;gap:10px;justify-content:flex-end}
.rail-btn{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--text-2);background:rgba(255,255,255,.03);
  transition:all var(--ease);
}
.rail-btn:hover{color:var(--brand);border-color:rgba(33,224,176,.45);background:rgba(33,224,176,.07)}
.rail-btn:active{transform:scale(.96)}

/* ============ 保障条 ============ */
.assure-bar{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-radius:var(--radius);border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.01));
  overflow:hidden;
}
.assure-item{
  display:flex;align-items:center;gap:14px;padding:26px 24px;
  border-right:1px solid var(--line);
}
.assure-item:last-child{border-right:0}
.assure-item svg{color:var(--brand);flex-shrink:0}
.assure-item b{display:block;font-size:16px;font-weight:600;line-height:1.5}
.assure-item span{font-size:13px;color:var(--text-3)}

/* ============ CTA ============ */
.cta-panel{
  position:relative;overflow:hidden;border-radius:22px;
  padding:48px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.1);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow);
}
.cta-panel::before{
  content:"";position:absolute;inset:0;opacity:.06;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,rgba(33,224,176,.9) 0 2px,transparent 2px 14px),
                   repeating-linear-gradient(-45deg,rgba(122,92,255,.9) 0 2px,transparent 2px 14px);
}
.cta-panel > *{position:relative;z-index:2}
.cta-panel h2{font-size:clamp(22px,2.8vw,30px);max-width:600px}
.cta-panel p{font-size:16px;color:var(--text-2);margin-top:10px;max-width:620px}

/* ============ FAQ ============ */
.faq-list{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{
  border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--surface);
  overflow:hidden;transition:border-color var(--ease),background var(--ease);
}
.faq-item:hover{border-color:rgba(255,255,255,.16)}
.faq-item.is-open{border-color:rgba(33,224,176,.4);background:var(--surface-2)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;font-size:16px;font-weight:600;text-align:left;color:var(--text);
  transition:color var(--ease);
}
.faq-q:hover{color:var(--brand)}
.faq-q .chev{flex-shrink:0;transition:transform var(--ease);color:var(--brand)}
.faq-item.is-open .faq-q .chev{transform:rotate(180deg)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .3s cubic-bezier(.22,.61,.36,1);
}
.faq-item.is-open .faq-a{max-height:360px}
.faq-a p{padding:0 22px 22px;font-size:15px;line-height:1.9;color:var(--text-2)}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-900);border-top:1px solid var(--line);
  padding:64px 0 0;position:relative;
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:48px 48px;
}
.footer-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand p{font-size:15px;color:var(--text-3);line-height:1.8;margin-top:16px;max-width:300px}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:18px;color:var(--text)}
.footer-col li{margin-bottom:12px}
.footer-col a{font-size:15px;color:var(--text-3);transition:color var(--ease),padding-left var(--ease)}
.footer-col a:hover{color:var(--brand);padding-left:4px}
.footer-bottom{
  position:relative;z-index:2;border-top:1px solid var(--line);
  padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:var(--text-3);flex-wrap:wrap;
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .service-grid{grid-template-columns:repeat(2,1fr)}
  .focus-grid{grid-template-columns:1fr 1fr}
  .focus-card--main{grid-column:1/-1}
  .hero-inner{gap:36px}
}
@media (max-width:991px){
  .nav-list{display:none}
  .nav-toggle{display:grid}
  .hero{padding:130px 0 64px;min-height:auto}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-sub{max-width:none}
  .section{padding:72px 0}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .assure-bar{grid-template-columns:repeat(2,1fr)}
  .assure-item:nth-child(2){border-right:0}
  .assure-item:nth-child(1),.assure-item:nth-child(2){border-bottom:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  body{font-size:16px}
  .hero{padding:116px 0 56px}
  .hero-visual .frame{aspect-ratio:16/12}
  .hero-chip{left:8px;bottom:-14px;position:relative;margin-top:16px;width:fit-content}
  .hero-stats{gap:24px}
  .hero-stat b{font-size:22px}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px}
  .focus-grid{grid-template-columns:1fr}
  .service-grid{grid-template-columns:1fr}
  .post-grid{grid-template-columns:1fr}
  .review-card{flex:0 0 min(86vw,340px)}
  .assure-bar{grid-template-columns:1fr}
  .assure-item{border-right:0;border-bottom:1px solid var(--line)}
  .assure-item:last-child{border-bottom:0}
  .cta-panel{flex-direction:column;align-items:flex-start;padding:30px 24px}
  .cta-panel .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .hero-cta .btn{width:100%}
  .faq-q{padding:18px;font-size:15px}
  .faq-a p{padding:0 18px 18px}
}
@media (max-width:479px){
  h1,.hero h1{font-size:clamp(26px,7.5vw,34px)}
  .logo-text{font-size:16px}
  .hero-cta{gap:10px}
}

/* roulang page: article */
:root{
  --ink-900:#060B12;
  --ink-800:#0B131D;
  --surface:#101A26;
  --surface-2:#16222F;
  --brand:#21E0B0;
  --brand-deep:#12B894;
  --brand-2:#7A5CFF;
  --accent:#FFB44D;
  --text:#E8F1F4;
  --text-2:#A6B7C4;
  --text-3:#6E8091;
  --line:rgba(255,255,255,.08);
  --glow:rgba(33,224,176,.35);
  --radius:18px;
  --radius-sm:14px;
  --radius-btn:12px;
  --shadow:0 18px 48px rgba(0,0,0,.45), 0 0 0 1px rgba(255,255,255,.06);
  --shadow-hover:0 26px 60px rgba(0,0,0,.55);
  --ease:0.24s cubic-bezier(.22,.61,.36,1);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"Inter",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:var(--font);
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::selection{background:var(--glow);color:#04140f;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color var(--ease),opacity var(--ease);}
a:hover{color:var(--brand);}
button,input,textarea,select{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;}
p{margin:0 0 1.1em;}
:focus-visible{outline:none;box-shadow:0 0 0 3px var(--glow);border-radius:8px;}
::-webkit-scrollbar{width:8px;height:8px;}
::-webkit-scrollbar-track{background:var(--surface-2);}
::-webkit-scrollbar-thumb{background:var(--brand);border-radius:999px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
  white-space:nowrap;border:1px solid transparent;
}
.btn-primary{
  background:linear-gradient(135deg,#21E0B0 0%,#12B894 100%);
  color:#04140F;box-shadow:0 10px 28px rgba(33,224,176,.28);
}
.btn-primary:hover{transform:translateY(-2px);color:#04140F;box-shadow:0 16px 40px rgba(33,224,176,.45);}
.btn-primary:active{transform:translateY(0);}
.btn-glass{
  background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  border-color:var(--line);color:var(--text);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.btn-glass:hover{border-color:rgba(33,224,176,.45);color:var(--brand);transform:translateY(-2px);}
.btn-ghost{color:var(--brand);padding:0 8px;height:auto;}
.btn-ghost:hover{color:#5bf3cd;transform:translateX(2px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn:disabled,.btn[disabled]{opacity:.45;pointer-events:none;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;height:72px;
  background:rgba(6,11,18,.42);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:height var(--ease),background var(--ease),box-shadow var(--ease);
}
.site-header.is-stuck{
  height:60px;background:rgba(11,19,29,.94);
  box-shadow:0 12px 34px rgba(0,0,0,.5);
}
.nav{display:flex;align-items:center;gap:28px;height:100%;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;border-radius:999px;display:grid;place-items:center;
  background:linear-gradient(135deg,#21E0B0,#7A5CFF);
  color:#04140F;font-weight:800;font-size:16px;
  box-shadow:0 0 0 1px rgba(255,255,255,.14),0 6px 18px rgba(33,224,176,.3);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;font-size:16px;font-weight:700;color:var(--text);}
.logo-text small{font-size:11px;font-weight:400;color:var(--text-3);letter-spacing:.14em;}
.nav-list{display:flex;align-items:center;gap:26px;margin-left:auto;}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);padding:6px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,#21E0B0,#12B894);transform:scaleX(0);transform-origin:left;
  transition:transform var(--ease);box-shadow:0 0 12px var(--glow);
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:40px;height:40px;border-radius:999px;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--text-2);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
}
.icon-btn:hover{color:var(--brand);border-color:rgba(33,224,176,.45);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;place-items:center;
  border:1px solid var(--line);color:var(--text);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
}
.nav-toggle:hover{color:var(--brand);border-color:rgba(33,224,176,.45);}

/* ---------- 阅读进度 ---------- */
.read-progress{
  position:fixed;top:0;left:0;height:2px;width:0;z-index:120;
  background:linear-gradient(90deg,#21E0B0,#7A5CFF);
  box-shadow:0 0 12px var(--glow);
  transition:width .1s linear;
}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;padding:132px 0 46px;overflow:hidden;
  background-image:linear-gradient(90deg,rgba(6,11,18,.94) 0%,rgba(6,11,18,.72) 55%,rgba(6,11,18,.34) 100%),url(/assets/images/backpic/back-3.webp);
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:64px 64px;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px;}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--text-3);opacity:.6;}
.cat-label{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  border:1px solid var(--line);color:var(--brand);font-size:13px;font-weight:600;letter-spacing:.04em;
}
.article-hero h2{font-size:clamp(18px,2vw,22px);color:var(--text-2);font-weight:600;margin-top:16px;}

/* ---------- 文章主体 ---------- */
.article-main{padding:64px 0 56px;}
.article-wrap{max-width:760px;margin:0 auto;}
.article-title{font-size:clamp(30px,5vw,44px);line-height:1.22;font-weight:700;letter-spacing:-.01em;}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin:20px 0 8px;
  font-size:13px;color:var(--text-3);
}
.article-meta .dot{width:4px;height:4px;border-radius:999px;background:var(--text-3);opacity:.6;}
.article-meta .pill{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  border:1px solid rgba(33,224,176,.32);color:var(--brand);font-size:12px;background:rgba(33,224,176,.08);
}
.divider{height:1px;background:var(--line);margin:28px 0 36px;}

.article-body{font-size:17px;line-height:1.9;color:var(--text-2);}
.article-body p{margin:0 0 1.6em;color:var(--text-2);}
.article-body strong{color:var(--text);font-weight:600;}
.article-body h2{
  position:relative;font-size:clamp(22px,2.6vw,28px);color:var(--text);
  margin:40px 0 16px;padding-left:16px;line-height:1.35;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,#21E0B0,#12B894);box-shadow:0 0 12px var(--glow);
}
.article-body h3{font-size:20px;color:var(--text);margin:28px 0 12px;font-weight:600;line-height:1.4;}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(33,224,176,.35);}
.article-body a:hover{color:#5bf3cd;}
.article-body ul,.article-body ol{margin:0 0 1.6em;padding-left:2px;}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-bottom:10px;color:var(--text-2);}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.75em;width:8px;height:8px;border-radius:2px;
  background:linear-gradient(135deg,#21E0B0,#12B894);
}
.article-body ol{counter-reset:item;}
.article-body ol li{counter-increment:item;}
.article-body ol li::before{
  content:counter(item);position:absolute;left:0;top:.2em;width:16px;text-align:left;
  color:var(--brand);font-family:var(--font-num);font-size:13px;font-weight:700;
}
.article-body blockquote{
  margin:28px 0;padding:20px 24px;border-radius:var(--radius-sm);
  border-left:3px solid var(--brand);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--radius-sm);margin:24px 0 8px;width:100%;height:auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:4px;}
.article-body .table-scroll{overflow-x:auto;margin:26px 0;border-radius:var(--radius-sm);border:1px solid var(--line);}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px;}
.article-body th{
  background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  color:var(--text);font-weight:600;text-align:left;padding:14px 18px;border-bottom:1px solid var(--line);
}
.article-body td{padding:13px 18px;border-bottom:1px solid var(--line);color:var(--text-2);}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.025);}
.article-body tbody tr:hover{background:rgba(33,224,176,.06);}
.article-body code{
  font-family:var(--font-num);font-size:14px;background:var(--surface-2);
  padding:2px 7px;border-radius:6px;color:var(--brand);
}

/* ---------- 文末 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:44px 0 8px;padding-top:28px;border-top:1px solid var(--line);}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  font-size:13px;color:var(--text-2);border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  transition:all var(--ease);
}
.tag:hover{color:var(--brand);border-color:rgba(33,224,176,.45);transform:translateY(-2px);}

.section{padding:64px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.section-head h2{font-size:clamp(22px,2.8vw,30px);color:var(--text);}
.section-head .more{font-size:14px;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.section-head .more:hover{transform:translateX(2px);color:#5bf3cd;}

.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rel-card{
  display:flex;flex-direction:column;border-radius:var(--radius);overflow:hidden;
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(33,224,176,.45);}
.rel-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--surface-2);}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.rel-card:hover .thumb img{transform:scale(1.04);}
.rel-card .body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.badge{
  align-self:flex-start;display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;color:var(--brand);
  background:rgba(33,224,176,.1);border:1px solid rgba(33,224,176,.28);
}
.rel-card h3{font-size:18px;font-weight:600;color:var(--text);line-height:1.45;}
.rel-card:hover h3{color:var(--brand);}
.rel-card .meta{margin-top:auto;font-size:13px;color:var(--text-3);display:flex;align-items:center;justify-content:space-between;}
.rel-card .meta .go{color:var(--brand);display:inline-flex;align-items:center;gap:4px;transition:transform var(--ease);}
.rel-card:hover .meta .go{transform:translateX(2px);}

.post-nav{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:40px;}
.post-nav a{
  display:block;padding:22px 24px;border-radius:var(--radius-sm);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);transition:all var(--ease);
}
.post-nav a:hover{transform:translateY(-4px);border-color:rgba(33,224,176,.45);box-shadow:var(--shadow);}
.post-nav .label{font-size:12px;color:var(--text-3);letter-spacing:.12em;display:block;margin-bottom:8px;}
.post-nav .title{font-size:16px;font-weight:600;color:var(--text);}
.post-nav a:hover .title{color:var(--brand);}
.post-nav .right{text-align:right;}

.back-row{display:flex;justify-content:center;margin-top:36px;}

.empty-state{
  text-align:center;padding:72px 24px;border-radius:var(--radius);
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);
}
.empty-state h2{font-size:24px;color:var(--text);margin-bottom:12px;}
.empty-state p{color:var(--text-2);margin-bottom:24px;}

.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius);
  padding:44px 48px;margin:8px 0 0;
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line);box-shadow:var(--shadow);
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
}
.cta-band::after{
  content:"";position:absolute;inset:0;opacity:.05;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.8) 0 1px,transparent 1px 14px),
                   repeating-linear-gradient(-45deg,rgba(255,255,255,.8) 0 1px,transparent 1px 14px);
}
.cta-band h2{font-size:clamp(21px,2.6vw,28px);color:var(--text);margin-bottom:8px;position:relative;}
.cta-band p{margin:0;color:var(--text-2);font-size:15px;position:relative;}
.cta-band .actions{position:relative;display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:72px;background:var(--ink-900);border-top:1px solid var(--line);
  padding:64px 0 28px;position:relative;
}
.site-footer::before{
  content:"";position:absolute;inset:0;opacity:.04;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:72px 72px;
}
.footer-grid{position:relative;display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;}
.footer-brand p{color:var(--text-2);font-size:14px;line-height:1.8;margin-top:16px;max-width:320px;}
.footer-col h4{font-size:15px;color:var(--text);margin-bottom:18px;font-weight:600;}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul a{font-size:14px;color:var(--text-2);}
.footer-col ul a:hover{color:var(--brand);}
.footer-bottom{
  position:relative;margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-list{gap:18px;}
  .nav-link{font-size:14px;}
  .rel-grid{gap:18px;}
}
@media (max-width:991px){
  .nav-list{display:none;}
  .nav-toggle{display:grid;}
  .nav-actions .icon-btn{display:none;}
  body.nav-open::before{
    content:"";position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:95;
  }
  body.nav-open .nav-list{
    display:flex;flex-direction:column;align-items:flex-start;gap:6px;
    position:fixed;top:0;right:0;width:min(82vw,320px);height:100vh;
    padding:92px 26px 32px;margin:0;
    background:rgba(11,19,29,.98);border-left:1px solid var(--line);
    z-index:110;box-shadow:-24px 0 60px rgba(0,0,0,.5);
    overflow-y:auto;
    animation:drawer .26s cubic-bezier(.22,.61,.36,1);
  }
  body.nav-open .nav-link{display:block;padding:12px 0;font-size:16px;width:100%;border-bottom:1px solid var(--line);}
  @keyframes drawer{from{transform:translateX(100%);}to{transform:translateX(0);}}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .article-hero{padding-top:118px;}
  .section{padding:56px 0;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .article-main{padding:44px 0 40px;}
  .rel-grid{grid-template-columns:1fr;}
  .post-nav{grid-template-columns:1fr;}
  .post-nav .right{text-align:left;}
  .cta-band{padding:32px 24px;flex-direction:column;align-items:flex-start;}
  .cta-band .actions{width:100%;}
  .cta-band .actions .btn{width:100%;}
  .section{padding:48px 0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .logo-text{font-size:15px;}
}
@media (max-width:479px){
  .article-title{font-size:26px;}
  .article-meta{gap:10px;}
  .btn{width:100%;}
  .back-row .btn,.section-head .more{width:auto;}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --ink-900:#060B12;
  --ink-800:#0B131D;
  --surface:#101A26;
  --surface-2:#16222F;
  --brand:#21E0B0;
  --brand-deep:#12B894;
  --brand-2:#7A5CFF;
  --accent:#FFB44D;
  --text:#E8F1F4;
  --text-2:#A6B7C4;
  --text-3:#6E8091;
  --line:rgba(255,255,255,.08);
  --glow:rgba(33,224,176,.35);
  --grad-btn:linear-gradient(135deg,#21E0B0 0%,#12B894 100%);
  --shadow:0 18px 48px rgba(0,0,0,.45),0 0 0 1px rgba(255,255,255,.06);
  --shadow-hover:0 26px 60px rgba(0,0,0,.55),0 0 0 1px rgba(33,224,176,.30);
  --r-card:18px;
  --r-sm:14px;
  --r-btn:12px;
  --t:.24s cubic-bezier(.22,.61,.36,1);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --mono:"Inter",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  background:var(--ink-900);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button,input{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
svg{display:block;}
::selection{background:var(--glow);color:#04120E;}
::-webkit-scrollbar{width:8px;height:8px;}
::-webkit-scrollbar-track{background:var(--surface-2);}
::-webkit-scrollbar-thumb{background:var(--brand);border-radius:999px;}
:focus-visible{outline:3px solid var(--glow);outline-offset:2px;border-radius:6px;}

/* ============ 容器与通用 ============ */
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
.section{padding:96px 0;position:relative;}
.section + .section{border-top:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:clamp(24px,3.2vw,34px);line-height:1.3;font-weight:700;letter-spacing:.2px;}
.section-head p{margin-top:16px;color:var(--text-2);font-size:15px;line-height:1.9;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.16em;color:var(--brand);
  text-transform:uppercase;margin-bottom:14px;font-family:var(--mono);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);opacity:.7;}
.muted{color:var(--text-2);}
.small{font-size:14px;line-height:1.7;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  transition:transform var(--t),box-shadow var(--t),background var(--t),border-color var(--t),color var(--t);
  white-space:nowrap;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-primary{background:var(--grad-btn);color:#04120E;box-shadow:0 10px 26px rgba(33,224,176,.24);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 38px rgba(33,224,176,.42);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 18px rgba(33,224,176,.3);}
.btn-ghost{
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);color:var(--text);
  backdrop-filter:blur(14px) saturate(140%);
}
.btn-ghost:hover{border-color:rgba(33,224,176,.45);color:var(--brand);transform:translateY(-2px);}
.btn-text{color:var(--brand);height:auto;padding:0;font-weight:600;}
.btn-text:hover{transform:translateX(2px);}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;pointer-events:none;}

/* ============ 头部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  background:rgba(6,11,18,.42);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background var(--t),box-shadow var(--t),height var(--t);
}
.site-header.is-stuck{background:rgba(11,19,29,.94);box-shadow:0 14px 40px rgba(0,0,0,.45);}
.nav{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:72px;transition:height var(--t);
}
.site-header.is-stuck .nav{height:60px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;border-radius:11px;
  display:grid;place-items:center;
  background:var(--grad-btn);color:#04120E;
  font-weight:800;font-size:17px;
  box-shadow:0 8px 20px rgba(33,224,176,.32);
}
.logo-text{display:flex;flex-direction:column;font-size:16px;font-weight:700;line-height:1.15;letter-spacing:.01em;}
.logo-text small{font-size:11px;font-weight:400;color:var(--text-3);letter-spacing:.18em;margin-top:3px;}
.nav-list{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;display:block;padding:9px 12px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--text-2);
  transition:color var(--t),background var(--t);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05);}
.nav-link.is-active{color:var(--text);}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px var(--glow);
}
.nav-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  color:var(--text-2);border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.01));
  transition:color var(--t),border-color var(--t),transform var(--t);
}
.icon-btn:hover{color:var(--brand);border-color:rgba(33,224,176,.45);transform:translateY(-1px);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  place-items:center;color:var(--text);border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.01));
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;visibility:hidden;
  transition:opacity var(--t),visibility var(--t);z-index:95;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:96;
  background:var(--ink-800);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform var(--t);
  display:flex;flex-direction:column;padding:20px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-close{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--text-2);
}
.drawer-close:hover{color:var(--brand);border-color:rgba(33,224,176,.45);}
.drawer nav ul{display:flex;flex-direction:column;gap:4px;}
.drawer nav a{
  display:block;padding:13px 14px;border-radius:12px;font-size:15px;
  color:var(--text-2);border:1px solid transparent;transition:all var(--t);
}
.drawer nav a:hover,.drawer nav a.is-active{
  color:var(--text);background:rgba(255,255,255,.05);border-color:var(--line);
}
.drawer nav a.is-active{color:var(--brand);border-color:rgba(33,224,176,.35);}
.drawer .btn{margin-top:22px;width:100%;}

/* ============ 面包屑 + 分类横幅 ============ */
.crumb-bar{padding:100px 0 0;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);padding:18px 0 0;}
.breadcrumb a{color:var(--text-2);transition:color var(--t);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb span.sep{color:var(--text-3);opacity:.7;}
.breadcrumb .current{color:var(--brand);}

.cat-hero{
  position:relative;margin-top:22px;border-radius:24px;overflow:hidden;
  border:1px solid var(--line);
  background-image:linear-gradient(90deg,rgba(6,11,18,.94) 0%,rgba(6,11,18,.62) 48%,rgba(6,11,18,.30) 100%),url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  box-shadow:var(--shadow);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:52px 52px;
}
.cat-hero-inner{position:relative;z-index:2;padding:56px 48px;max-width:760px;}
.cat-hero h1{
  font-size:clamp(30px,5vw,50px);line-height:1.22;font-weight:700;letter-spacing:.4px;
}
.cat-hero h1 em{font-style:normal;color:var(--brand);}
.cat-hero p.lead{margin-top:18px;font-size:16px;line-height:1.9;color:var(--text-2);max-width:620px;}
.cat-hero .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;font-size:13px;
  color:var(--brand);background:rgba(33,224,176,.08);
  border:1px solid rgba(33,224,176,.25);
}
.cat-hero .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.stat-bar{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  border-top:1px solid var(--line);margin-top:36px;position:relative;z-index:2;
}
.stat-bar .stat{padding:20px 8px 0;}
.stat-bar .stat + .stat{border-left:1px solid var(--line);padding-left:26px;}
.stat b{
  display:block;font-family:var(--mono);font-size:26px;font-weight:700;color:var(--brand);
  text-shadow:0 0 18px var(--glow);line-height:1.2;
}
.stat span{display:block;margin-top:6px;font-size:13px;color:var(--text-3);}

/* ============ 主体：粘性目录 + 内容区 ============ */
.cat-shell{
  display:grid;grid-template-columns:240px minmax(0,1fr);
  gap:48px;align-items:start;padding:72px 0 96px;
}
.cat-side{position:sticky;top:96px;}
.cat-side h2{
  font-size:13px;letter-spacing:.18em;color:var(--text-3);font-weight:600;
  font-family:var(--mono);text-transform:uppercase;margin-bottom:16px;
}
.toc{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--line);}
.toc a{
  position:relative;display:block;padding:10px 0 10px 18px;
  font-size:14px;color:var(--text-3);transition:color var(--t),padding var(--t);
}
.toc a::before{
  content:"";position:absolute;left:-1px;top:50%;transform:translateY(-50%);
  width:2px;height:0;background:var(--brand);border-radius:2px;
  box-shadow:0 0 12px var(--glow);transition:height var(--t);
}
.toc a:hover{color:var(--text-2);}
.toc a.is-current{color:var(--brand);padding-left:22px;}
.toc a.is-current::before{height:64%;}
.side-card{
  margin-top:28px;padding:20px;border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);backdrop-filter:blur(14px) saturate(140%);
}
.side-card h3{font-size:15px;font-weight:600;margin-bottom:10px;}
.side-card p{font-size:13px;line-height:1.8;color:var(--text-2);}
.side-card .btn{margin-top:16px;width:100%;}

.cat-main > section + section{margin-top:64px;padding-top:56px;border-top:1px solid var(--line);}
.cat-main h2.block-title{
  font-size:clamp(22px,2.4vw,28px);line-height:1.35;font-weight:700;margin-bottom:14px;
  display:flex;align-items:center;gap:12px;
}
.cat-main h2.block-title::before{
  content:"";width:3px;height:24px;border-radius:3px;background:var(--brand);
  box-shadow:0 0 14px var(--glow);flex-shrink:0;
}
.cat-main .block-desc{color:var(--text-2);font-size:15px;line-height:1.9;max-width:720px;margin-bottom:28px;}

.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}

.card{
  position:relative;display:flex;flex-direction:column;
  border-radius:var(--r-card);overflow:hidden;
  background:var(--surface);border:1px solid var(--line);
  box-shadow:var(--shadow);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(33,224,176,.35);}
.card:hover::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(33,224,176,.85),transparent);
}
.card-figure{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--surface-2);}
.card-figure img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.22,.61,.36,1);}
.card:hover .card-figure img{transform:scale(1.04);}
.card-figure .badge{
  position:absolute;left:14px;top:14px;
  padding:5px 12px;border-radius:999px;font-size:12px;font-weight:600;color:var(--brand);
  background:rgba(6,11,18,.72);border:1px solid rgba(33,224,176,.35);
  backdrop-filter:blur(8px);
}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{font-size:18px;line-height:1.45;font-weight:600;}
.card-body p{font-size:15px;line-height:1.8;color:var(--text-2);}
.card-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  gap:12px;padding-top:12px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.card-foot .go{color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:6px;transition:transform var(--t);}
.card:hover .card-foot .go{transform:translateX(2px);}

/* 紧凑列表卡（无图） */
.mini-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.mini-card{
  padding:22px;border-radius:var(--r-sm);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);backdrop-filter:blur(14px) saturate(140%);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.mini-card:hover{transform:translateY(-4px);border-color:rgba(33,224,176,.45);box-shadow:var(--shadow);}
.mini-card .num{
  font-family:var(--mono);font-size:13px;color:var(--brand);letter-spacing:.14em;margin-bottom:10px;display:block;
}
.mini-card h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.mini-card p{font-size:14px;line-height:1.8;color:var(--text-2);}

/* 指标面板 */
.hud{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
}
.hud-cell{background:var(--surface);padding:26px 22px;transition:background var(--t);}
.hud-cell:hover{background:var(--surface-2);}
.hud-cell b{
  display:block;font-family:var(--mono);font-size:30px;font-weight:700;color:var(--brand);
  line-height:1.15;text-shadow:0 0 20px var(--glow);
}
.hud-cell span{display:block;margin-top:8px;font-size:13px;color:var(--text-3);line-height:1.7;}

/* 步骤条 */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;counter-reset:st;}
.step{position:relative;padding:24px 20px;border-radius:var(--r-sm);background:var(--surface);border:1px solid var(--line);}
.step::before{
  counter-increment:st;content:"0" counter(st);
  font-family:var(--mono);font-size:13px;color:var(--brand);letter-spacing:.14em;display:block;margin-bottom:12px;
}
.step h3{font-size:16px;font-weight:600;margin-bottom:8px;}
.step p{font-size:14px;line-height:1.8;color:var(--text-2);}

/* FAQ */
.faq{display:flex;flex-direction:column;gap:12px;max-width:880px;}
.faq-item{
  border-radius:var(--r-sm);border:1px solid var(--line);background:var(--surface);
  overflow:hidden;transition:border-color var(--t),background var(--t);
}
.faq-item.is-open{border-color:rgba(33,224,176,.35);background:var(--surface-2);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:16px;font-weight:600;text-align:left;color:var(--text);
}
.faq-q:hover{color:var(--brand);}
.faq-q .chev{flex-shrink:0;transition:transform var(--t);color:var(--brand);}
.faq-item.is-open .chev{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height var(--t);}
.faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.9;color:var(--text-2);}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;border-radius:24px;
  padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line);backdrop-filter:blur(14px) saturate(140%);
}
.cta-band::after{
  content:"";position:absolute;inset:0;opacity:.06;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.6) 0 1px,transparent 1px 12px);
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);line-height:1.4;font-weight:700;}
.cta-band p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:620px;}
.cta-band .cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-900);border-top:1px solid var(--line);
  padding:72px 0 0;position:relative;
}
.site-footer::before{
  content:"";position:absolute;inset:0 0 auto 0;height:240px;pointer-events:none;opacity:.05;
  background-image:radial-gradient(circle at 20% 0%,var(--brand) 0,transparent 60%);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;position:relative;z-index:2;
}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:var(--text-2);max-width:340px;}
.footer-col h4{font-size:14px;font-weight:600;letter-spacing:.08em;margin-bottom:16px;color:var(--text);}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-2);transition:color var(--t),transform var(--t);display:inline-block;}
.footer-col a:hover{color:var(--brand);transform:translateX(2px);}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);padding:22px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .cat-shell{grid-template-columns:212px minmax(0,1fr);gap:32px;}
}
@media (max-width:991px){
  .nav-list{display:none;}
  .nav-toggle{display:grid;}
  .icon-btn{display:none;}
  .section{padding:72px 0;}
  .cat-shell{grid-template-columns:1fr;gap:28px;padding:48px 0 72px;}
  .cat-side{position:static;}
  .toc{
    flex-direction:row;overflow-x:auto;border-left:0;
    border-bottom:1px solid var(--line);padding-bottom:10px;gap:16px;
  }
  .toc a{padding:6px 0;white-space:nowrap;}
  .toc a::before{left:0;right:0;top:auto;bottom:0;width:0;height:2px;transform:none;}
  .toc a.is-current{padding-left:0;color:var(--brand);}
  .toc a.is-current::before{width:100%;height:2px;}
  .side-card{display:none;}
  .hud{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cat-hero-inner{padding:44px 32px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .grid-2,.mini-list{grid-template-columns:1fr;}
  .crumb-bar{padding:84px 0 0;}
  .cat-hero{border-radius:18px;}
  .cat-hero-inner{padding:34px 22px;}
  .cat-hero .hero-actions .btn{width:100%;}
  .stat-bar{grid-template-columns:1fr;}
  .stat-bar .stat + .stat{border-left:0;border-top:1px solid var(--line);padding-left:8px;margin-top:16px;padding-top:16px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 24px;border-radius:18px;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:479px){
  body{font-size:16px;}
  .hud{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .logo-text small{display:none;}
}

/* roulang page: category2 */
/* ============ 设计令牌 ============ */
:root{
  --ink-900:#060B12;
  --ink-800:#0B131D;
  --surface:#101A26;
  --surface-2:#16222F;
  --brand:#21E0B0;
  --brand-deep:#12B894;
  --brand-2:#7A5CFF;
  --accent:#FFB44D;
  --text:#E8F1F4;
  --text-2:#A6B7C4;
  --text-3:#6E8091;
  --line:rgba(255,255,255,.08);
  --glow:rgba(33,224,176,.35);
  --danger:#FF6B6B;

  --r-card:18px;
  --r-sm:14px;
  --r-btn:12px;
  --r-pill:999px;

  --shadow:0 18px 48px rgba(0,0,0,.45),0 0 0 1px rgba(255,255,255,.06);
  --shadow-hover:0 26px 60px rgba(0,0,0,.55),0 0 0 1px rgba(33,224,176,.45);

  --glass:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  --ease:cubic-bezier(.22,.61,.36,1);

  --pad-section:96px;
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"Inter",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

/* ============ Reset / Base ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1{font-size:clamp(30px,5vw,54px);line-height:1.22;font-weight:700;letter-spacing:-.5px;}
h2{font-size:clamp(24px,3.2vw,34px);line-height:1.3;font-weight:700;letter-spacing:-.3px;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
strong{color:var(--text);font-weight:600;}
::selection{background:rgba(33,224,176,.28);}

:focus-visible{
  outline:none;
  box-shadow:0 0 0 3px rgba(33,224,176,.35);
  border-radius:8px;
}

::-webkit-scrollbar{width:8px;height:8px;}
::-webkit-scrollbar-track{background:#16222F;}
::-webkit-scrollbar-thumb{background:var(--brand);border-radius:999px;}
::-webkit-scrollbar-thumb:hover{background:var(--brand-deep);}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:.2px;
  white-space:nowrap;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,#21E0B0,#12B894);
  color:#04140F;
  box-shadow:0 10px 30px rgba(33,224,176,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px rgba(33,224,176,.42);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 18px rgba(33,224,176,.3);}
.btn-ghost{
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--text);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.btn-ghost:hover{
  transform:translateY(-2px);
  border-color:rgba(33,224,176,.45);
  box-shadow:0 14px 34px rgba(0,0,0,.4);
}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;border-radius:10px;}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}

/* ============ 导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  height:72px;
  display:flex;
  align-items:center;
  background:rgba(11,19,29,.28);
  border-bottom:1px solid rgba(255,255,255,.06);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  transition:height .24s var(--ease),background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-stuck{
  height:60px;
  background:rgba(11,19,29,.92);
  box-shadow:0 12px 34px rgba(0,0,0,.5);
}
.nav{
  display:flex;
  align-items:center;
  gap:24px;
  width:100%;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.logo-mark{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(135deg,rgba(33,224,176,.95),rgba(122,92,255,.85));
  color:#04140F;
  font-weight:800;
  font-size:18px;
  box-shadow:0 6px 20px rgba(33,224,176,.3);
}
.logo-text{
  display:flex;
  flex-direction:column;
  font-size:16px;
  font-weight:700;
  line-height:1.15;
  letter-spacing:.2px;
}
.logo-text small{
  font-size:11px;
  font-weight:400;
  color:var(--text-3);
  letter-spacing:1.6px;
}
.nav-list{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  font-weight:500;
  color:var(--text-2);
  border-radius:8px;
  transition:color .24s var(--ease),background .24s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-link.is-active{color:var(--text);}
.nav-link.is-active::after{transform:scaleX(1);box-shadow:0 0 10px var(--glow);}
.nav-actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.icon-btn{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:10px;
  border:1px solid var(--line);
  background:var(--glass);
  color:var(--text-2);
  transition:color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
}
.icon-btn:hover{color:var(--brand);border-color:rgba(33,224,176,.45);transform:translateY(-2px);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  place-items:center;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--glass);
  color:var(--text);
}
.nav-toggle:hover{border-color:rgba(33,224,176,.45);color:var(--brand);}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(0,0,0,.6);
  opacity:0;visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);
  z-index:90;
  backdrop-filter:blur(2px);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;
  top:0;right:0;
  width:min(340px,86vw);
  height:100%;
  background:var(--ink-800);
  border-left:1px solid var(--line);
  box-shadow:-24px 0 60px rgba(0,0,0,.6);
  transform:translateX(102%);
  transition:transform .3s var(--ease);
  z-index:100;
  display:flex;
  flex-direction:column;
  padding:20px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding-bottom:16px;
  margin-bottom:12px;
  border-bottom:1px solid var(--line);
}
.drawer-close{
  width:44px;height:44px;
  display:grid;place-items:center;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--glass);
  color:var(--text-2);
}
.drawer-close:hover{color:var(--brand);border-color:rgba(33,224,176,.45);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{
  display:block;
  padding:13px 14px;
  border-radius:12px;
  font-size:16px;
  color:var(--text-2);
  border:1px solid transparent;
  transition:all .24s var(--ease);
}
.drawer-nav a:hover{color:var(--text);background:rgba(255,255,255,.05);border-color:var(--line);}
.drawer-nav a.is-active{color:var(--brand);background:rgba(33,224,176,.08);border-color:rgba(33,224,176,.28);}
.drawer-cta{margin-top:auto;padding-top:20px;display:grid;gap:10px;}

/* ============ Hero ============ */
.cat-hero{
  position:relative;
  padding:148px 0 72px;
  border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(90deg,rgba(6,11,18,.94) 0%,rgba(6,11,18,.78) 45%,rgba(6,11,18,.30) 100%),
    url(/assets/images/backpic/back-1.webp);
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.cat-hero::after{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.5;
  pointer-events:none;
  mask-image:radial-gradient(ellipse at 20% 40%,#000 10%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse at 20% 40%,#000 10%,transparent 78%);
}
.cat-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:20px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--text-2);transition:color .24s var(--ease);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb span.sep{opacity:.5;}
.breadcrumb .current{color:var(--brand);}

.hero-grid{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:48px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:30px;
  padding:0 14px;
  border-radius:var(--r-pill);
  background:var(--glass);
  border:1px solid rgba(33,224,176,.28);
  color:var(--brand);
  font-size:13px;
  font-weight:600;
  letter-spacing:.4px;
  margin-bottom:18px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.eyebrow::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 10px var(--brand);
}
.cat-hero h1{margin-bottom:18px;}
.cat-hero h1 em{
  font-style:normal;
  background:linear-gradient(120deg,#21E0B0,#7A5CFF);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  font-size:17px;
  color:var(--text-2);
  max-width:520px;
  margin-bottom:28px;
}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:34px;}
.stat-row{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:18px;
  padding-top:24px;
  border-top:1px solid var(--line);
  max-width:520px;
}
.stat-num{
  font-family:var(--font-mono);
  font-size:26px;
  font-weight:700;
  color:var(--brand);
  text-shadow:0 0 22px var(--glow);
  line-height:1.2;
  letter-spacing:-.5px;
}
.stat-label{font-size:13px;color:var(--text-3);}

.hero-visual{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  aspect-ratio:16/10;
  background:var(--surface);
}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,18,.05) 40%,rgba(6,11,18,.75));
}
.hero-visual .float-card{
  position:absolute;
  left:20px;right:20px;bottom:20px;
  z-index:2;
  display:flex;
  align-items:center;
  gap:14px;
  padding:14px 18px;
  border-radius:var(--r-sm);
  background:rgba(16,26,38,.72);
  border:1px solid rgba(255,255,255,.1);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.hero-visual .float-card .dot{
  width:10px;height:10px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 12px rgba(255,180,77,.7);
  flex-shrink:0;
}
.hero-visual .float-card p{font-size:14px;color:var(--text-2);line-height:1.6;}
.hero-visual .float-card strong{display:block;font-size:15px;color:var(--text);margin-bottom:2px;}

/* ============ 板块通用 ============ */
.section{padding:var(--pad-section) 0;}
.section + .section{border-top:1px solid var(--line);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:36px;
  flex-wrap:wrap;
}
.section-head p{
  font-size:15px;
  color:var(--text-3);
  max-width:560px;
  margin-top:10px;
}
.section-head .more{
  font-size:15px;
  font-weight:600;
  color:var(--brand);
  display:inline-flex;
  align-items:center;
  gap:6px;
  transition:gap .24s var(--ease),color .24s var(--ease);
}
.section-head .more:hover{gap:10px;color:#3df3c5;}

/* ============ 筛选标签条 ============ */
.filter-bar{
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px;
  margin-bottom:32px;
  border-radius:var(--r-pill);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  overflow-x:auto;
  scrollbar-width:none;
}
.filter-bar::-webkit-scrollbar{display:none;}
.filter-chip{
  flex:0 0 auto;
  height:38px;
  padding:0 18px;
  border-radius:var(--r-pill);
  font-size:14px;
  font-weight:600;
  color:var(--text-2);
  border:1px solid transparent;
  transition:all .24s var(--ease);
}
.filter-chip:hover{color:var(--text);background:rgba(255,255,255,.06);border-color:var(--line);}
.filter-chip.is-active{
  color:#04140F;
  background:linear-gradient(135deg,#21E0B0,#12B894);
  box-shadow:0 8px 24px rgba(33,224,176,.3);
}
.filter-count{
  margin-left:auto;
  padding-left:16px;
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--text-3);
  white-space:nowrap;
  flex:0 0 auto;
}

/* ============ 瀑布流 ============ */
.masonry{
  columns:3;
  column-gap:24px;
}
.res-card{
  break-inside:avoid;
  margin-bottom:24px;
  border-radius:var(--r-card);
  overflow:hidden;
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
  display:block;
}
.res-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(33,224,176,.45);
}
.res-card.is-hidden{display:none;}
.res-media{
  position:relative;
  overflow:hidden;
  background:var(--surface-2);
}
.res-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s var(--ease);
}
.res-card:hover .res-media img{transform:scale(1.04);}
.ar-16x9{aspect-ratio:16/9;}
.ar-4x3{aspect-ratio:4/3;}
.ar-3x2{aspect-ratio:3/2;}
.ar-1x1{aspect-ratio:1/1;}
.res-media .tag{
  position:absolute;
  top:12px;left:12px;
  height:26px;
  padding:0 12px;
  display:inline-flex;
  align-items:center;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:600;
  color:var(--brand);
  background:rgba(9,15,23,.72);
  border:1px solid rgba(33,224,176,.32);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.res-body{padding:20px 22px 22px;}
.res-body h3{
  font-size:18px;
  font-weight:600;
  line-height:1.45;
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.res-body p{
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:16px;
}
.res-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
.res-foot .go{
  color:var(--brand);
  font-weight:600;
  display:inline-flex;
  align-items:center;
  gap:5px;
  transition:gap .24s var(--ease);
}
.res-card:hover .res-foot .go{gap:9px;}

/* 空态 */
.empty-state{
  display:none;
  padding:56px 20px;
  text-align:center;
  border-radius:var(--r-card);
  border:1px dashed var(--line);
  background:rgba(255,255,255,.02);
  color:var(--text-3);
}
.empty-state.is-show{display:block;}
.empty-state svg{margin:0 auto 14px;color:var(--brand);opacity:.7;}
.empty-state p{font-size:15px;margin-bottom:16px;}

/* ============ 入口速查 ============ */
.entry-list{
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--glass);
  overflow:hidden;
  box-shadow:var(--shadow);
}
.entry-row{
  display:grid;
  grid-template-columns:56px minmax(160px,1.1fr) 2fr auto;
  align-items:center;
  gap:20px;
  padding:20px 24px;
  border-bottom:1px solid var(--line);
  transition:background .24s var(--ease),border-color .24s var(--ease);
}
.entry-row:last-child{border-bottom:0;}
.entry-row:hover{background:rgba(33,224,176,.05);}
.entry-idx{
  font-family:var(--font-mono);
  font-size:14px;
  color:var(--brand);
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:10px;
  border:1px solid rgba(33,224,176,.28);
  background:rgba(33,224,176,.07);
}
.entry-row h3{font-size:16px;font-weight:600;}
.entry-row .desc{font-size:14px;color:var(--text-2);line-height:1.75;}
.entry-row .arrow{
  color:var(--text-3);
  transition:color .24s var(--ease),transform .24s var(--ease);
}
.entry-row:hover .arrow{color:var(--brand);transform:translateX(3px);}

/* ============ 更新说明条 ============ */
.notice-band{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
}
.notice-item{
  background:var(--ink-800);
  padding:26px 24px;
  transition:background .24s var(--ease);
}
.notice-item:hover{background:var(--surface);}
.notice-item .ico{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:12px;
  border:1px solid rgba(33,224,176,.28);
  color:var(--brand);
  margin-bottom:14px;
}
.notice-item h3{font-size:16px;margin-bottom:8px;}
.notice-item p{font-size:14px;color:var(--text-2);line-height:1.75;}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:var(--glass);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.faq-item:hover{border-color:rgba(33,224,176,.28);}
.faq-item.is-open{border-color:rgba(33,224,176,.45);box-shadow:0 0 0 1px rgba(33,224,176,.12);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  transition:color .24s var(--ease);
}
.faq-q:hover{color:var(--brand);}
.faq-q .chev{
  flex-shrink:0;
  transition:transform .28s var(--ease),color .24s var(--ease);
  color:var(--text-3);
}
.faq-item.is-open .faq-q .chev{transform:rotate(180deg);color:var(--brand);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .32s var(--ease);
}
.faq-a p{
  padding:0 22px 20px;
  font-size:15px;
  line-height:1.9;
  color:var(--text-2);
}

/* ============ CTA ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-card);
  border:1px solid rgba(33,224,176,.24);
  background:
    linear-gradient(120deg,rgba(33,224,176,.10),rgba(122,92,255,.10)),
    var(--surface);
  box-shadow:var(--shadow);
  padding:44px 46px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  background-image:
    repeating-linear-gradient(45deg,rgba(255,255,255,.05) 0 1px,transparent 1px 14px),
    repeating-linear-gradient(-45deg,rgba(255,255,255,.05) 0 1px,transparent 1px 14px);
  opacity:.5;
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);margin-bottom:8px;}
.cta-band p{font-size:15px;color:var(--text-2);max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-900);
  border-top:1px solid var(--line);
  padding:72px 0 0;
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(33,224,176,.35),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.8;max-width:320px;}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  margin-bottom:16px;
  color:var(--text);
}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{
  font-size:14px;
  color:var(--text-3);
  transition:color .24s var(--ease),padding-left .24s var(--ease);
}
.footer-col a:hover{color:var(--brand);padding-left:4px;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:22px 0;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--pad-section:80px;}
  .masonry{columns:2;}
  .entry-row{grid-template-columns:48px minmax(140px,1fr) 1.6fr auto;gap:16px;}
}
@media (max-width:991px){
  :root{--pad-section:72px;}
  .nav-list{display:none;}
  .nav-actions .icon-btn{display:none;}
  .nav-toggle{display:grid;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-sub{max-width:none;}
  .stat-row{max-width:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .notice-band{grid-template-columns:1fr;}
  .entry-row{grid-template-columns:auto 1fr;grid-template-areas:"idx title" "desc desc" "arrow arrow";gap:12px;padding:18px 20px;}
  .entry-row .entry-idx{grid-area:idx;}
  .entry-row h3{grid-area:title;}
  .entry-row .desc{grid-area:desc;}
  .entry-row .arrow{grid-area:arrow;justify-self:end;}
}
@media (max-width:767px){
  :root{--pad-section:56px;}
  body{font-size:16px;}
  .container{padding:0 18px;}
  .nav{gap:12px;}
  .logo-text{font-size:15px;}
  .logo-text small{display:none;}
  .nav-actions .btn{display:none;}
  .cat-hero{padding:120px 0 56px;}
  .hero-grid{gap:30px;}
  .hero-actions .btn{width:100%;}
  .stat-row{grid-template-columns:1fr 1fr;gap:14px;}
  .stat-num{font-size:22px;}
  .masonry{columns:1;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .cta-band{padding:30px 24px;flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:479px){
  .hero-visual .float-card{left:12px;right:12px;bottom:12px;padding:12px 14px;}
  .stat-row{grid-template-columns:1fr;}
  .filter-chip{height:34px;padding:0 14px;font-size:13px;}
}

/* roulang page: category3 */
:root{
  --ink-900:#060B12;
  --ink-800:#0B131D;
  --surface:#101A26;
  --surface-2:#16222F;
  --brand:#21E0B0;
  --brand-deep:#12B894;
  --brand-2:#7A5CFF;
  --accent:#FFB44D;
  --text:#E8F1F4;
  --text-2:#A6B7C4;
  --text-3:#6E8091;
  --line:rgba(255,255,255,.08);
  --glow:rgba(33,224,176,.35);
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow:0 18px 48px rgba(0,0,0,.45), 0 0 0 1px rgba(255,255,255,.06);
  --shadow-hover:0 26px 60px rgba(0,0,0,.55), 0 0 0 1px rgba(33,224,176,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-mono:"Inter",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  background:var(--ink-900);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body.drawer-open{overflow:hidden}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .24s var(--ease)}
a:hover{color:#5BF0CC}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit}
::selection{background:rgba(33,224,176,.28);color:#fff}

::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:#16222F}
::-webkit-scrollbar-thumb{background:#21E0B0;border-radius:999px}
::-webkit-scrollbar-thumb:hover{background:#12B894}
*{scrollbar-color:#21E0B0 #16222F;scrollbar-width:thin}

:focus-visible{outline:none;box-shadow:0 0 0 3px var(--glow);border-radius:8px}

.container{max-width:1240px;margin:0 auto;padding:0 24px}

/* ==== header ==== */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:120;
  background:linear-gradient(180deg,rgba(6,11,18,.74),rgba(6,11,18,.28));
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-stuck{
  background:rgba(11,19,29,.92);
  box-shadow:0 12px 34px rgba(0,0,0,.5);
}
.nav{
  display:flex;
  align-items:center;
  gap:26px;
  height:72px;
  transition:height .24s var(--ease);
}
.site-header.is-stuck .nav{height:60px}

.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  display:grid;place-items:center;
  font-size:17px;font-weight:700;color:#04120E;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 18px rgba(33,224,176,.35);
}
.logo-text{
  display:flex;flex-direction:column;
  font-size:15px;font-weight:700;line-height:1.25;color:var(--text);
  letter-spacing:.2px;white-space:nowrap;
}
.logo-text small{font-size:11px;font-weight:400;color:var(--text-3);letter-spacing:.8px}

.nav-list{display:flex;align-items:center;gap:24px;margin-left:auto}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 2px;
  font-size:15px;font-weight:500;
  color:var(--text-2);
}
.nav-link::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;
  height:2px;border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 12px var(--glow);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-link:hover,.nav-link.is-active{color:var(--text)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}

.nav-actions{display:flex;align-items:center;gap:12px;flex:none}
.icon-btn{
  width:40px;height:40px;border-radius:10px;
  display:grid;place-items:center;
  color:var(--text-2);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  transition:all .24s var(--ease);
}
.icon-btn:hover{color:var(--brand);border-color:rgba(33,224,176,.45);transform:translateY(-2px)}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  color:var(--text);
  cursor:pointer;
  place-items:center;
  transition:all .24s var(--ease);
}
.nav-toggle:hover{border-color:rgba(33,224,176,.45);color:var(--brand)}

/* ==== buttons ==== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;
  border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  text-align:center;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,#21E0B0,#12B894);
  color:#04120E;
  box-shadow:0 10px 26px rgba(18,184,148,.30);
}
.btn-primary:hover{
  color:#04120E;
  transform:translateY(-2px);
  box-shadow:0 16px 36px rgba(33,224,176,.48);
}
.btn-ghost{
  background:rgba(255,255,255,.05);
  border-color:var(--line);
  color:var(--text);
  backdrop-filter:blur(10px);
}
.btn-ghost:hover{
  color:var(--brand);
  border-color:rgba(33,224,176,.45);
  transform:translateY(-2px);
}
.btn-sm{height:38px;padding:0 18px;font-size:14px;border-radius:10px}
.btn:active{transform:translateY(0)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

/* ==== drawer ==== */
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(0,0,0,.6);
  opacity:0;visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);
  z-index:130;
}
body.drawer-open .drawer-mask{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;
  width:300px;max-width:86vw;
  background:var(--ink-800);
  border-left:1px solid var(--line);
  z-index:140;
  padding:20px;
  display:flex;flex-direction:column;gap:20px;
  transform:translateX(102%);
  transition:transform .28s var(--ease);
  overflow-y:auto;
}
body.drawer-open .drawer{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-close{
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.05);
  color:var(--text);cursor:pointer;display:grid;place-items:center;
  transition:all .24s var(--ease);
}
.drawer-close:hover{color:var(--brand);border-color:rgba(33,224,176,.45)}
.drawer-nav{display:flex;flex-direction:column;gap:6px}
.drawer-nav a{
  padding:12px 14px;border-radius:12px;
  font-size:15px;color:var(--text-2);
  background:rgba(255,255,255,.03);
  border:1px solid transparent;
  transition:all .24s var(--ease);
}
.drawer-nav a:hover,.drawer-nav a.is-active{
  color:var(--text);background:rgba(33,224,176,.10);border-color:rgba(33,224,176,.28);
}

/* ==== page hero ==== */
.page-hero{
  position:relative;
  padding:148px 0 66px;
  background-image:linear-gradient(90deg,rgba(6,11,18,.94),rgba(6,11,18,.34)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);margin-bottom:22px;
}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span.sep{color:var(--text-3);opacity:.6}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  font-size:13px;color:var(--brand);
  background:rgba(33,224,176,.10);
  border:1px solid rgba(33,224,176,.28);
  margin-bottom:18px;
}
.eyebrow::before{
  content:"";width:6px;height:6px;border-radius:999px;
  background:var(--brand);box-shadow:0 0 10px var(--glow);
}
.page-hero h1{
  font-size:clamp(30px,5vw,54px);
  line-height:1.22;
  font-weight:700;
  letter-spacing:.4px;
  max-width:900px;
}
.page-hero .hero-sub{
  margin-top:16px;
  font-size:clamp(16px,2vw,19px);
  line-height:1.8;
  color:var(--text-2);
  max-width:700px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:44px;
  margin-top:36px;padding-top:26px;
  border-top:1px solid var(--line);
}
.hero-stats .stat{min-width:96px}
.stat-num{
  font-family:var(--font-mono);
  font-size:28px;font-weight:700;line-height:1.2;
  color:var(--brand);
  text-shadow:0 0 22px var(--glow);
}
.stat-label{font-size:13px;color:var(--text-3);margin-top:4px}

/* ==== sections ==== */
.section{padding:96px 0}
.section + .section{border-top:1px solid var(--line)}
.section-alt{background:var(--ink-800)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{
  font-size:clamp(24px,3.2vw,34px);
  line-height:1.3;font-weight:700;
}
.section-head p{margin-top:16px;color:var(--text-2);font-size:16px}
.section-head .kicker{
  display:block;font-size:13px;letter-spacing:2px;text-transform:uppercase;
  color:var(--brand);margin-bottom:12px;font-family:var(--font-mono);
}

/* ==== card ==== */
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:24px;
  box-shadow:var(--shadow);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(33,224,176,.35);
}
.glass{
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
}
.card h3{font-size:20px;line-height:1.4;font-weight:600;margin-bottom:10px}
.card p{font-size:15px;line-height:1.9;color:var(--text-2)}

.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tag{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:999px;
  font-size:12.5px;
  color:var(--brand);
  background:rgba(33,224,176,.10);
  border:1px solid rgba(33,224,176,.24);
}
.tag-purple{color:#B6A6FF;background:rgba(122,92,255,.12);border-color:rgba(122,92,255,.28)}
.tag-amber{color:var(--accent);background:rgba(255,180,77,.12);border-color:rgba(255,180,77,.28)}

/* ==== timeline ==== */
.timeline{position:relative;padding:8px 0}
.timeline::before{
  content:"";
  position:absolute;left:19px;top:10px;bottom:10px;
  width:2px;border-radius:2px;
  background:linear-gradient(180deg,rgba(33,224,176,.72),rgba(122,92,255,.42),rgba(255,255,255,.06));
}
.tl-item{position:relative;padding-left:64px;margin-bottom:26px}
.tl-item:last-child{margin-bottom:0}
.tl-node{
  position:absolute;left:1px;top:22px;
  width:38px;height:38px;border-radius:999px;
  display:grid;place-items:center;
  font-family:var(--font-mono);font-size:13px;font-weight:700;
  color:#04120E;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 0 4px rgba(6,11,18,.92),0 0 22px var(--glow);
  z-index:2;
}
.tl-body{display:grid;grid-template-columns:1.15fr .85fr;gap:20px;align-items:start}
.tl-main{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow);transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease)}
.tl-item:hover .tl-main{transform:translateY(-4px);border-color:rgba(33,224,176,.35);box-shadow:var(--shadow-hover)}
.tl-main h3{font-size:20px;font-weight:600;line-height:1.4;margin-bottom:10px}
.tl-main p{font-size:15.5px;line-height:1.9;color:var(--text-2)}
.tl-side{
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:20px;
}
.tl-side h4{
  font-size:13px;letter-spacing:1.6px;text-transform:uppercase;
  color:var(--brand);font-family:var(--font-mono);font-weight:600;
  margin-bottom:14px;
}
.tick-list li{
  position:relative;padding-left:18px;
  font-size:15px;line-height:1.85;color:var(--text-2);
}
.tick-list li + li{margin-top:8px}
.tick-list li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:6px;height:6px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 8px var(--glow);
}

/* ==== grid cards ==== */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.info-card{display:flex;flex-direction:column;height:100%}
.info-card .num{
  font-family:var(--font-mono);font-size:13px;color:var(--text-3);
  letter-spacing:1.5px;margin-bottom:14px;
}
.info-card h3{font-size:19px}
.info-card p{margin-top:8px}
.info-card .card-link{
  margin-top:auto;padding-top:18px;
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--brand);
}
.info-card .card-link:hover{gap:10px}

/* ==== split media ==== */
.split{display:grid;grid-template-columns:.9fr 1.1fr;gap:34px;align-items:center}
.media-card{
  border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);
  background:var(--surface);
  box-shadow:var(--shadow);
  margin:0;
}
.media-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.media-card figcaption{
  padding:14px 20px;font-size:13px;color:var(--text-3);text-align:center;
  border-top:1px solid var(--line);
}
.check-list{display:grid;gap:12px}
.check-list li{
  display:flex;gap:14px;
  padding:16px 20px;
  border-radius:var(--radius-md);
  background:var(--surface);
  border:1px solid var(--line);
  font-size:15.5px;line-height:1.8;color:var(--text-2);
  transition:border-color .24s var(--ease),transform .24s var(--ease);
}
.check-list li:hover{border-color:rgba(33,224,176,.4);transform:translateX(4px)}
.check-list li strong{color:var(--text);font-weight:600}
.check-list .mk{
  flex:none;width:22px;height:22px;border-radius:7px;margin-top:4px;
  display:grid;place-items:center;
  background:rgba(33,224,176,.14);
  border:1px solid rgba(33,224,176,.32);
  color:var(--brand);font-size:12px;
}

/* ==== faq ==== */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  background:var(--surface);
  overflow:hidden;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.faq-item.is-open{border-color:rgba(33,224,176,.35);box-shadow:0 14px 34px rgba(0,0,0,.35)}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;
  background:none;border:0;
  color:var(--text);
  font-size:16px;font-weight:600;line-height:1.6;
  text-align:left;cursor:pointer;
}
.faq-q svg{flex:none;color:var(--brand);transition:transform .3s var(--ease)}
.faq-item.is-open .faq-q svg{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .34s var(--ease)}
.faq-item.is-open .faq-a{max-height:380px}
.faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.9;color:var(--text-2)}

/* ==== cta ==== */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:20px;
  padding:44px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.05) 0 1px,transparent 1px 16px);
  opacity:.6;pointer-events:none;
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;margin-bottom:10px}
.cta-band p{color:var(--text-2);font-size:15.5px}
.cta-band .cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:none}

/* ==== footer ==== */
.site-footer{
  background:var(--ink-900);
  border-top:1px solid var(--line);
  padding:72px 0 0;
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle at 12% 0%,rgba(33,224,176,.06),transparent 42%);
  pointer-events:none;
}
.site-footer .container{position:relative;z-index:2}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:34px;
  padding-bottom:48px;
}
.footer-brand p{
  margin-top:16px;font-size:14.5px;line-height:1.9;color:var(--text-3);max-width:340px;
}
.footer-col h4{
  font-size:14px;font-weight:600;color:var(--text);
  letter-spacing:.6px;margin-bottom:16px;
}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14.5px;color:var(--text-3)}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 26px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ==== responsive ==== */
@media (max-width:1199px){
  .nav-list{gap:18px}
  .nav-link{font-size:14.5px}
  .split{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:991px){
  .nav-list{display:none}
  .nav-toggle{display:grid}
  .section{padding:72px 0}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .tl-body{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 18px}
  .section{padding:56px 0}
  .page-hero{padding:126px 0 54px}
  .hero-stats{gap:28px;margin-top:28px}
  .grid-3,.grid-2,.split{grid-template-columns:1fr}
  .timeline::before{left:16px}
  .tl-item{padding-left:46px;margin-bottom:20px}
  .tl-node{left:1px;top:20px;width:32px;height:32px;font-size:12px}
  .tl-main,.tl-side{padding:20px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px 22px}
  .cta-band .cta-actions{width:100%}
  .cta-band .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .footer-brand{grid-column:1 / -1}
  .icon-btn{display:none}
}
@media (max-width:479px){
  .hero-actions .btn{width:100%}
  .hero-stats{gap:20px}
  .stat-num{font-size:24px}
  .footer-grid{grid-template-columns:1fr}
  .logo-text{font-size:14px}
  .logo-text small{display:none}
}

/* roulang page: category4 */
:root{
  --ink-900:#060B12;
  --ink-800:#0B131D;
  --surface:#101A26;
  --surface-2:#16222F;
  --brand:#21E0B0;
  --brand-deep:#12B894;
  --brand-2:#7A5CFF;
  --accent:#FFB44D;
  --text:#E8F1F4;
  --text-2:#A6B7C4;
  --text-3:#6E8091;
  --line:rgba(255,255,255,.08);
  --glow:rgba(33,224,176,.35);
  --glass:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  --shadow:0 18px 48px rgba(0,0,0,.45),0 0 0 1px rgba(255,255,255,.06);
  --shadow-hover:0 26px 60px rgba(0,0,0,.55);
  --r-card:18px;
  --r-sm:14px;
  --r-btn:12px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1{font-size:clamp(30px,5vw,54px);line-height:1.22;font-weight:700;letter-spacing:-.01em}
h2{font-size:clamp(24px,3.2vw,34px);line-height:1.3;font-weight:700}
h3{font-size:20px;line-height:1.4;font-weight:600}
p{color:var(--text-2)}
::selection{background:rgba(33,224,176,.28)}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:var(--surface-2)}
::-webkit-scrollbar-thumb{background:var(--brand);border-radius:999px}
:focus-visible{outline:none;box-shadow:0 0 0 3px var(--glow);border-radius:6px}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:96px 0;position:relative}
.section + .section{border-top:1px solid var(--line)}
.section-head{margin-bottom:40px;max-width:760px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;text-transform:none;
  color:var(--brand);margin-bottom:14px;
}
.eyebrow::before{content:"";width:20px;height:1px;background:var(--brand);display:block}
.section-desc{margin-top:16px;font-size:16px;line-height:1.9}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#21E0B0,#12B894);
  color:#04170F;
  box-shadow:0 10px 30px rgba(33,224,176,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 38px rgba(33,224,176,.42)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 18px rgba(33,224,176,.3)}
.btn-ghost{
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--text);
  backdrop-filter:blur(14px) saturate(140%);
}
.btn-ghost:hover{border-color:rgba(33,224,176,.45);transform:translateY(-2px);box-shadow:0 14px 34px rgba(0,0,0,.4)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  height:72px;display:flex;align-items:center;
  background:rgba(6,11,18,.42);
  border-bottom:1px solid rgba(255,255,255,.06);
  backdrop-filter:blur(18px) saturate(140%);
  transition:height .24s var(--ease),background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-stuck{
  height:60px;
  background:rgba(11,19,29,.92);
  box-shadow:0 12px 34px rgba(0,0,0,.5);
}
.nav{display:flex;align-items:center;gap:28px;width:100%}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(33,224,176,.9),rgba(122,92,255,.85));
  color:#04170F;font-weight:700;font-size:17px;
  box-shadow:0 8px 22px rgba(33,224,176,.28);
}
.logo-text{display:flex;flex-direction:column;font-size:16px;font-weight:700;line-height:1.2;letter-spacing:.01em;color:var(--text)}
.logo-text small{font-size:11px;font-weight:400;color:var(--text-3);letter-spacing:.06em;margin-top:2px}
.nav-list{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;display:block;padding:8px 12px;
  font-size:15px;font-weight:500;color:var(--text-2);
  border-radius:8px;
  transition:color .24s var(--ease),background .24s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);
  transition:transform .24s var(--ease);box-shadow:0 0 12px var(--glow);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-link.is-active{color:var(--text)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;color:var(--text-2);
  border:1px solid var(--line);background:var(--glass);
  transition:color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
}
.icon-btn:hover{color:var(--brand);border-color:rgba(33,224,176,.45);transform:translateY(-2px)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  place-items:center;color:var(--text);
  border:1px solid var(--line);background:var(--glass);
}
.nav-toggle:hover{border-color:rgba(33,224,176,.45)}

/* ---------- Drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:200;
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:210;
  background:var(--ink-800);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .3s var(--ease);
  padding:22px;display:flex;flex-direction:column;gap:20px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;border:1px solid var(--line);color:var(--text-2)}
.drawer-close:hover{color:var(--brand);border-color:rgba(33,224,176,.45)}
.drawer-list{display:flex;flex-direction:column;gap:4px}
.drawer-list a{
  display:block;padding:12px 14px;border-radius:12px;
  color:var(--text-2);font-size:15px;border:1px solid transparent;
  transition:all .24s var(--ease);
}
.drawer-list a:hover{background:rgba(255,255,255,.04);color:var(--text)}
.drawer-list a.is-active{color:var(--brand);border-color:rgba(33,224,176,.35);background:rgba(33,224,176,.06)}
.drawer-cta{margin-top:auto}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:150px 0 76px;
  background-color:var(--ink-900);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  opacity:.5;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(6,11,18,.94) 0%,rgba(6,11,18,.72) 46%,rgba(6,11,18,.30) 100%);
}
.hero .container{position:relative;z-index:2}
.hero-grid{
  position:absolute;inset:0;z-index:1;pointer-events:none;opacity:.06;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:64px 64px;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px}
.breadcrumb a{color:var(--text-3);transition:color .24s var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span.sep{color:rgba(255,255,255,.2)}
.breadcrumb .current{color:var(--text-2)}
.hero-inner{max-width:820px}
.hero h1{margin-bottom:18px}
.hero h1 em{font-style:normal;color:var(--brand);text-shadow:0 0 26px rgba(33,224,176,.35)}
.hero-sub{font-size:18px;line-height:1.9;color:var(--text-2);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;
  margin-top:52px;padding-top:28px;border-top:1px solid var(--line);max-width:720px;
}
.stat-num{
  font-family:"Inter",ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:clamp(24px,3vw,32px);font-weight:700;color:var(--brand);
  text-shadow:0 0 22px rgba(33,224,176,.35);line-height:1.2;
}
.stat-num small{font-size:14px;color:var(--text-2);margin-left:4px;text-shadow:none;font-weight:500}
.stat-label{font-size:13px;color:var(--text-3);margin-top:6px}

/* ---------- Compare panels ---------- */
.compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.compare-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
  position:relative;overflow:hidden;
}
.compare-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(33,224,176,.7),transparent);
  opacity:0;transition:opacity .24s var(--ease);
}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(33,224,176,.45)}
.compare-card:hover::before{opacity:1}
.compare-card h3{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.compare-badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(33,224,176,.12);color:var(--brand);border:1px solid rgba(33,224,176,.28);
}
.compare-badge.purple{background:rgba(122,92,255,.14);color:#B9A8FF;border-color:rgba(122,92,255,.32)}
.compare-lead{font-size:15px;color:var(--text-3);margin-bottom:18px}
.compare-list{display:flex;flex-direction:column;gap:2px}
.compare-list li{
  display:grid;grid-template-columns:96px 1fr;gap:14px;
  padding:12px 0;border-top:1px solid var(--line);font-size:15px;
}
.compare-list li:first-child{border-top:0}
.compare-list .k{color:var(--text-3);font-size:14px}
.compare-list .v{color:var(--text)}
.compare-note{
  margin-top:18px;padding:12px 14px;border-radius:12px;
  background:rgba(255,180,77,.08);border:1px solid rgba(255,180,77,.22);
  font-size:14px;color:#FFD9A5;
}

/* ---------- Spec table ---------- */
.spec-wrap{
  border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.01));
  box-shadow:var(--shadow);
}
.spec-scroll{overflow-x:auto}
.spec-table{width:100%;border-collapse:collapse;font-size:15px;min-width:900px}
.spec-table thead th{
  background:linear-gradient(180deg,rgba(255,255,255,.10),rgba(255,255,255,.03));
  backdrop-filter:blur(10px);
  text-align:left;padding:16px 18px;font-size:14px;font-weight:600;color:var(--text);
  border-bottom:1px solid var(--line);white-space:nowrap;
}
.spec-table tbody tr{
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
  box-shadow:inset 0 0 0 1px rgba(33,224,176,0);
}
.spec-table tbody tr:nth-child(odd){background:rgba(255,255,255,.022)}
.spec-table tbody tr:hover{background:rgba(33,224,176,.07);box-shadow:inset 0 0 0 1px rgba(33,224,176,.45)}
.spec-table td{padding:16px 18px;color:var(--text-2);border-bottom:1px solid var(--line);vertical-align:top;line-height:1.7}
.spec-table tbody tr:last-child td{border-bottom:0}
.spec-table td:first-child{color:var(--text);font-weight:600;white-space:nowrap}
.spec-table .mono{font-family:"Inter",ui-monospace,Menlo,monospace;font-size:14px;color:var(--brand)}
.table-foot{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  padding:16px 18px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);
  background:rgba(255,255,255,.02);
}
.table-foot .link{color:var(--brand);transition:transform .24s var(--ease),color .24s var(--ease);display:inline-flex;gap:6px;align-items:center}
.table-foot .link:hover{transform:translateX(2px)}

/* ---------- Checklist ---------- */
.check-layout{display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:start}
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.check-item{
  display:flex;gap:14px;padding:18px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:var(--surface);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.check-item:hover{transform:translateY(-4px);border-color:rgba(33,224,176,.45);box-shadow:var(--shadow)}
.check-ico{
  flex:0 0 34px;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:rgba(33,224,176,.1);color:var(--brand);border:1px solid rgba(33,224,176,.28);
}
.check-item h3{font-size:16px;margin-bottom:4px}
.check-item p{font-size:14px;line-height:1.8;color:var(--text-3)}
.check-media{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow);background:var(--surface);
}
.check-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.check-media figcaption{padding:14px 16px;font-size:13px;color:var(--text-3);line-height:1.7}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;display:flex;flex-direction:column;gap:12px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-sm);
  background:var(--surface);overflow:hidden;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease);
}
.faq-item:hover{border-color:rgba(33,224,176,.35)}
.faq-item.is-open{border-color:rgba(33,224,176,.45);background:var(--surface-2);box-shadow:0 14px 36px rgba(0,0,0,.4)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;font-size:16px;font-weight:600;color:var(--text);
}
.faq-q .chev{flex:0 0 auto;color:var(--brand);transition:transform .24s var(--ease)}
.faq-item.is-open .faq-q .chev{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a p{padding:0 20px 20px;font-size:15px;line-height:1.9;color:var(--text-2)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:24px;
  border:1px solid var(--line);
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow);
  padding:38px 34px;
  display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:radial-gradient(circle at 20% 30%,rgba(33,224,176,.9) 0 2px,transparent 2px),radial-gradient(circle at 70% 70%,rgba(122,92,255,.9) 0 2px,transparent 2px);
  background-size:34px 34px;
}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);max-width:560px}
.cta-band p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:600px}

/* ---------- Footer ---------- */
.site-footer{
  position:relative;margin-top:0;
  background:var(--ink-900);border-top:1px solid var(--line);
  padding:64px 0 0;
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.04;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:48px 48px;
}
.site-footer .container{position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--text-3);max-width:320px}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text);margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--text-3);transition:color .24s var(--ease),transform .24s var(--ease);display:inline-block}
.footer-col a:hover{color:var(--brand);transform:translateX(2px)}
.footer-bottom{
  margin-top:48px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .nav-list{gap:0}
  .nav-link{padding:8px 9px;font-size:14px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
}
@media (max-width:991px){
  .nav-list,.icon-btn{display:none}
  .nav-toggle{display:grid}
  .section{padding:72px 0}
  .compare-grid{grid-template-columns:1fr}
  .check-layout{grid-template-columns:1fr}
  .hero{padding:132px 0 64px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 18px}
  .section{padding:56px 0}
  .hero{padding:118px 0 52px}
  .hero-stats{grid-template-columns:1fr;gap:16px;padding-top:22px}
  .hero-actions .btn{width:100%}
  .check-grid{grid-template-columns:1fr}
  .cta-band{padding:26px 20px;flex-direction:column;align-items:flex-start}
  .cta-band .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}

  /* 表格转卡片式键值对 */
  .spec-scroll{overflow:visible}
  .spec-table{min-width:0;display:block}
  .spec-table thead{display:none}
  .spec-table tbody{display:block}
  .spec-table tbody tr{
    display:block;border:1px solid var(--line);border-radius:var(--r-sm);
    background:var(--surface)!important;margin:14px;padding:6px 2px;
    box-shadow:none;
  }
  .spec-table tbody tr:hover{box-shadow:inset 0 0 0 1px rgba(33,224,176,.45)}
  .spec-table td{
    display:flex;justify-content:space-between;gap:16px;
    padding:10px 14px;border-bottom:1px solid rgba(255,255,255,.05);
    font-size:14px;
  }
  .spec-table td:last-child{border-bottom:0}
  .spec-table td::before{
    content:attr(data-label);flex:0 0 92px;color:var(--text-3);font-size:13px;line-height:1.7;
  }
  .spec-table td:first-child{
    padding-top:14px;font-size:15px;color:var(--brand);
  }
  .spec-table td:first-child::before{color:var(--text-3)}
  .table-foot{padding:14px 16px}
}
@media (max-width:479px){
  .hero-sub{font-size:16px}
  .compare-list li{grid-template-columns:1fr;gap:2px}
  .compare-list .k{font-size:13px}
  .logo-text{font-size:15px}
  .logo-text small{display:none}
}

/* roulang page: category5 */
/* ============ 设计变量 ============ */
:root{
  --ink-900:#060B12;
  --ink-800:#0B131D;
  --surface:#101A26;
  --surface-2:#16222F;
  --brand:#21E0B0;
  --brand-deep:#12B894;
  --brand-2:#7A5CFF;
  --accent:#FFB44D;
  --text:#E8F1F4;
  --text-2:#A6B7C4;
  --text-3:#6E8091;
  --line:rgba(255,255,255,.08);
  --glow:rgba(33,224,176,.35);
  --shadow:0 18px 48px rgba(0,0,0,.45), 0 0 0 1px rgba(255,255,255,.06);
  --shadow-hover:0 26px 60px rgba(0,0,0,.55), 0 0 0 1px rgba(33,224,176,.35);
  --r-lg:18px;
  --r-md:14px;
  --r-btn:12px;
  --r-pill:999px;
  --dur:.24s;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,"SFMono-Regular",Inter,Menlo,Consolas,monospace;
  --gutter:24px;
  --header-h:72px;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:var(--font);
  font-size:17px;
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease),opacity var(--dur) var(--ease);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.01em;}
p{margin:0;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
:focus-visible{outline:3px solid var(--glow);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(33,224,176,.28);color:#fff;}

::-webkit-scrollbar{width:8px;height:8px;}
::-webkit-scrollbar-track{background:#16222F;}
::-webkit-scrollbar-thumb{background:var(--brand);border-radius:999px;}
::-webkit-scrollbar-thumb:hover{background:var(--brand-deep);}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 var(--gutter);}

/* ============ 头部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  height:var(--header-h);
  display:flex;align-items:center;
  background:linear-gradient(180deg,rgba(6,11,18,.72),rgba(6,11,18,.28));
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:height var(--dur) var(--ease),background var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header.is-stuck{
  height:60px;
  background:rgba(11,19,29,.94);
  box-shadow:0 10px 30px rgba(0,0,0,.45);
}
.nav{display:flex;align-items:center;gap:24px;width:100%;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:36px;height:36px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04140F;font-weight:800;font-size:18px;
  box-shadow:0 0 0 1px rgba(33,224,176,.4),0 8px 22px rgba(33,224,176,.22);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;font-size:16px;font-weight:700;letter-spacing:.02em;}
.logo-text small{font-size:11px;font-weight:400;color:var(--text-3);letter-spacing:.14em;margin-top:2px;}
.nav-list{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-block;
  padding:8px 12px;font-size:15px;font-weight:500;color:var(--text-2);
  border-radius:10px;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur) var(--ease);box-shadow:0 0 10px var(--glow);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:#fff;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:8px;}
.icon-btn{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  color:var(--text-2);border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  transition:all var(--dur) var(--ease);
}
.icon-btn:hover{color:var(--brand);border-color:rgba(33,224,176,.45);transform:translateY(-2px);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;place-items:center;
  color:var(--text);border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:all var(--dur) var(--ease);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04140F;
  box-shadow:0 10px 26px rgba(33,224,176,.24),0 0 0 1px rgba(33,224,176,.4);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(33,224,176,.38),0 0 0 1px rgba(33,224,176,.6);}
.btn-primary:active{transform:translateY(0);}
.btn-glass{
  background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  border:1px solid var(--line);color:var(--text);
  backdrop-filter:blur(14px) saturate(140%);
}
.btn-glass:hover{border-color:rgba(33,224,176,.45);transform:translateY(-2px);color:var(--brand);}
.btn-ghost{color:var(--brand);padding:0 6px;height:auto;}
.btn-ghost:hover{color:#fff;}
.btn:disabled,.btn[disabled]{opacity:.45;pointer-events:none;}
.btn.is-loading{position:relative;color:transparent;background:#0E1622;box-shadow:none;pointer-events:none;}
.btn.is-loading::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-btn);
  background:linear-gradient(90deg,transparent,rgba(33,224,176,.35),transparent);
  animation:sweep 1.1s infinite;
}
@keyframes sweep{0%{transform:translateX(-100%);}100%{transform:translateX(100%);}}

/* ============ 面包屑与标签 ============ */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:var(--text-2);}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;color:var(--brand);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid rgba(33,224,176,.32);
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;color:var(--brand);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);
}
.badge-accent{color:var(--accent);border-color:rgba(255,180,77,.32);}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:calc(var(--header-h) + 62px) 0 84px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.5;
  z-index:0;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(6,11,18,.94),rgba(6,11,18,.62) 55%,rgba(6,11,18,.34));
}
.hero-grid-lines{
  position:absolute;inset:0;z-index:1;pointer-events:none;opacity:.06;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:64px 64px;
}
.hero-inner{position:relative;z-index:2;max-width:880px;}
.hero h1{
  font-size:clamp(30px,5vw,52px);
  line-height:1.22;font-weight:700;margin:20px 0 16px;
}
.hero h1 em{font-style:normal;color:var(--brand);text-shadow:0 0 26px rgba(33,224,176,.45);}
.hero-sub{font-size:18px;line-height:1.8;color:var(--text-2);max-width:640px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:18px;margin-top:26px;font-size:13px;color:var(--text-3);}
.hero-meta span{display:inline-flex;align-items:center;gap:8px;}
.hero-meta i{color:var(--brand);}

/* 搜索框 */
.search-form{
  margin-top:30px;max-width:640px;
  display:flex;gap:10px;align-items:center;
  padding:8px;border-radius:16px;
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.search-form:focus-within{border-color:rgba(33,224,176,.55);box-shadow:0 0 0 4px rgba(33,224,176,.14);}
.search-form .s-icon{display:grid;place-items:center;color:var(--text-3);padding-left:10px;}
.search-form input{
  flex:1;height:48px;border:0;background:transparent;outline:none;
  font-size:15px;color:var(--text);min-width:0;
}
.search-form input::placeholder{color:var(--text-3);}
.hot-words{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:16px;font-size:13px;color:var(--text-3);}
.hot-words a{
  padding:5px 12px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:rgba(255,255,255,.03);color:var(--text-2);font-size:13px;
}
.hot-words a:hover{color:var(--brand);border-color:rgba(33,224,176,.45);}

/* ============ 板块通用 ============ */
.section{padding:96px 0;}
.section-alt{background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{margin-bottom:40px;max-width:760px;}
.section-head h2{font-size:clamp(24px,3.2vw,34px);line-height:1.3;}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px;}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}

/* ============ 快捷问题卡 ============ */
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.quick-card{
  display:flex;flex-direction:column;gap:12px;
  padding:24px;border-radius:var(--r-lg);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  transition:all var(--dur) var(--ease);
}
.quick-card:hover{transform:translateY(-4px);border-color:rgba(33,224,176,.45);box-shadow:var(--shadow-hover);}
.quick-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  color:var(--brand);border:1px solid rgba(33,224,176,.3);
  background:rgba(33,224,176,.08);font-size:17px;
}
.quick-card h3{font-size:18px;line-height:1.5;}
.quick-card p{font-size:15px;line-height:1.8;color:var(--text-2);}
.quick-card .more{margin-top:auto;font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.quick-card:hover .more{gap:10px;}

/* ============ 分类图文卡 ============ */
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.topic-card{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--r-lg);background:var(--surface);
  border:1px solid var(--line);box-shadow:var(--shadow);
  transition:all var(--dur) var(--ease);
}
.topic-card:hover{transform:translateY(-4px);border-color:rgba(33,224,176,.45);box-shadow:var(--shadow-hover);}
.topic-media{position:relative;aspect-ratio:16/9;overflow:hidden;}
.topic-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.topic-card:hover .topic-media img{transform:scale(1.05);}
.topic-media .badge{position:absolute;left:14px;top:14px;background:rgba(6,11,18,.7);backdrop-filter:blur(8px);}
.topic-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.topic-body h3{font-size:18px;line-height:1.5;}
.topic-body p{font-size:15px;line-height:1.8;color:var(--text-2);}
.topic-body .more{margin-top:auto;font-size:14px;font-weight:600;color:var(--brand);}

/* ============ 自查步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative;}
.step{
  position:relative;padding:24px 22px;border-radius:var(--r-lg);
  background:var(--surface);border:1px solid var(--line);
  transition:all var(--dur) var(--ease);
}
.step:hover{border-color:rgba(33,224,176,.45);transform:translateY(-4px);}
.step-num{
  font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:.12em;
  color:var(--brand);text-shadow:0 0 14px rgba(33,224,176,.5);
}
.step h3{font-size:17px;margin:12px 0 8px;}
.step p{font-size:14px;line-height:1.8;color:var(--text-2);}
.step::after{
  content:"";position:absolute;right:-14px;top:46px;width:8px;height:8px;
  border-top:2px solid rgba(33,224,176,.5);border-right:2px solid rgba(33,224,176,.5);
  transform:rotate(45deg);
}
.step:last-child::after{display:none;}

/* ============ FAQ 分栏 ============ */
.faq-layout{display:grid;grid-template-columns:1.95fr 1fr;gap:28px;align-items:start;}
.faq-panel{
  padding:8px;border-radius:var(--r-lg);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  border:1px solid var(--line);box-shadow:var(--shadow);
}
.faq-note{padding:14px 18px 6px;font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:8px;}
.faq-note i{color:var(--brand);}
.faq-list{display:flex;flex-direction:column;gap:12px;padding:10px;}
.faq-item{
  border-radius:var(--r-md);
  background:var(--surface);
  border:1px solid var(--line);
  transition:all var(--dur) var(--ease);
  overflow:hidden;
}
.faq-item:hover{border-color:rgba(33,224,176,.32);}
.faq-item[open]{border-color:rgba(33,224,176,.45);background:var(--surface-2);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:16px;font-weight:600;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-chevron{
  flex-shrink:0;width:22px;height:22px;border-radius:50%;
  border:1px solid rgba(33,224,176,.4);position:relative;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease);
}
.faq-chevron::before{
  content:"";position:absolute;left:50%;top:46%;
  width:6px;height:6px;border-right:1.6px solid var(--brand);border-bottom:1.6px solid var(--brand);
  transform:translate(-50%,-50%) rotate(45deg);
}
.faq-item[open] .faq-chevron{transform:rotate(180deg);background:rgba(33,224,176,.14);}
.faq-answer{padding:0 20px 20px;font-size:15px;line-height:1.9;color:var(--text-2);}
.faq-answer p+p{margin-top:12px;}
.faq-answer a{color:var(--brand);}
.faq-empty{padding:26px;text-align:center;color:var(--text-3);font-size:14px;}

/* 联系卡 */
.contact-card{
  position:sticky;top:96px;
  padding:26px;border-radius:var(--r-lg);
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line);box-shadow:var(--shadow);
  backdrop-filter:blur(14px) saturate(140%);
}
.contact-card h3{font-size:20px;margin-bottom:10px;}
.contact-card .lead{font-size:14px;line-height:1.8;color:var(--text-2);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;color:var(--text-2);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;border-radius:var(--r-btn);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  color:var(--text);font-size:15px;
  padding:12px 14px;outline:none;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
}
.field input,.field select{height:48px;padding:0 14px;}
.field textarea{min-height:104px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);box-shadow:0 0 0 4px rgba(33,224,176,.14);background:rgba(255,255,255,.06);
}
.field.has-error input,.field.has-error textarea,.field.has-error select{border-color:#FF6B6B;box-shadow:0 0 0 4px rgba(255,107,107,.12);}
.field .err{display:none;margin-top:6px;font-size:13px;color:#FF6B6B;}
.field.has-error .err{display:block;}
.contact-card .btn{width:100%;}
.contact-tips{margin-top:18px;padding-top:18px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:10px;}
.contact-tips li{display:flex;gap:10px;font-size:13px;line-height:1.7;color:var(--text-3);}
.contact-tips i{color:var(--brand);margin-top:4px;font-size:12px;}
.form-status{margin-top:12px;font-size:13px;color:var(--brand);min-height:20px;}

/* ============ 全宽 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:24px;
  padding:48px;
  background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  backdrop-filter:blur(14px) saturate(140%);
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.05;pointer-events:none;
  background-image:radial-gradient(circle at 12% 30%,#21E0B0 0 2px,transparent 2px),
                   radial-gradient(circle at 62% 70%,#7A5CFF 0 2px,transparent 2px);
  background-size:48px 48px;
}
.cta-band .cta-text{position:relative;z-index:1;max-width:640px;}
.cta-band h2{font-size:clamp(22px,3vw,30px);line-height:1.35;}
.cta-band p{margin-top:12px;color:var(--text-2);font-size:16px;}
.cta-band .cta-actions{position:relative;z-index:1;display:flex;gap:12px;flex-shrink:0;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-900);
  border-top:1px solid var(--line);
  padding:64px 0 0;
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:180px;pointer-events:none;opacity:.05;
  background-image:linear-gradient(90deg,rgba(255,255,255,.7) 1px,transparent 1px);
  background-size:40px 100%;
}
.footer-grid{
  position:relative;
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;
  padding-bottom:44px;
}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:var(--text-3);max-width:300px;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text);}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-3);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  position:relative;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
  padding:20px 0;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ============ 移动端抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:90;
  opacity:0;pointer-events:none;transition:opacity var(--dur) var(--ease);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:100;
  width:min(84vw,340px);
  padding:20px;
  background:var(--ink-800);
  border-left:1px solid var(--line);
  transform:translateX(102%);
  transition:transform .3s var(--ease);
  display:flex;flex-direction:column;gap:6px;
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;margin-bottom:8px;border-bottom:1px solid var(--line);}
.drawer-head .logo-text{font-size:15px;}
.drawer-close{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--text-2);font-size:18px;
}
.drawer-close:hover{color:var(--brand);border-color:rgba(33,224,176,.45);}
.drawer-list{display:flex;flex-direction:column;gap:4px;margin-bottom:auto;}
.drawer-list a{
  display:block;padding:13px 14px;border-radius:12px;
  font-size:15px;color:var(--text-2);border:1px solid transparent;
}
.drawer-list a:hover{background:rgba(255,255,255,.04);color:var(--text);}
.drawer-list a.is-active{color:var(--brand);background:rgba(33,224,176,.08);border-color:rgba(33,224,176,.32);}
.drawer-cta{margin-top:18px;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .quick-grid,.topic-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .step::after{display:none;}
}
@media (max-width:991px){
  .nav-list{display:none;}
  .nav-toggle{display:grid;}
  .nav-actions{margin-left:auto;}
  .section{padding:72px 0;}
  .faq-layout{grid-template-columns:1fr;}
  .contact-card{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px;}
}
@media (max-width:767px){
  :root{--gutter:18px;}
  body{font-size:16px;}
  .hero{padding:calc(var(--header-h) + 42px) 0 56px;}
  .hero-sub{font-size:16px;}
  .section{padding:56px 0;}
  .quick-grid,.topic-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .search-form{flex-direction:column;align-items:stretch;gap:12px;padding:14px;}
  .search-form .s-icon{display:none;}
  .search-form .btn{width:100%;}
  .section-head--row{flex-direction:column;align-items:flex-start;}
  .cta-band .cta-actions{width:100%;flex-direction:column;}
  .cta-band .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{justify-content:flex-start;}
}
@media (max-width:479px){
  .hero h1{font-size:30px;}
  .faq-item summary{font-size:15px;padding:16px;}
  .icon-btn{display:none;}
}