/* roulang page: index */
:root{
  --bg-0:#0A0D11;
  --bg-1:#121820;
  --brand:#FF6A1A;
  --brand-dark:#C94F08;
  --brand-light:#FF8A47;
  --accent:#2BD9A8;
  --accent-dim:#1B8F72;
  --danger:#FF5A5F;
  --text:#E6EAEF;
  --text-2:#A3ADB8;
  --text-3:#6E7883;
  --line:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.045);
  --glass-line:rgba(255,255,255,.14);
  --card-solid:#141A23;
  --r-cta:10px;
  --r:16px;
  --r-lg:20px;
  --glow:0 24px 56px -24px rgba(255,106,26,.4);
  --font-num:'Inter','DIN Alternate',ui-monospace,SFMono-Regular,Menlo,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Source Han Sans SC',system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(1100px 560px at 50% -12%, rgba(255,106,26,.08), transparent 62%),
    linear-gradient(180deg,#0A0D11 0%,#121820 100%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:12px}
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,figure,blockquote{margin:0}
::selection{background:rgba(255,106,26,.35);color:#fff}

::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0C1015}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:8px;border:2px solid #0C1015}
::-webkit-scrollbar-thumb:hover{background:rgba(255,106,26,.55)}

.shell{width:100%;max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px}
@media (min-width:768px){.shell{padding-left:24px;padding-right:24px}}
@media (min-width:1024px){.shell{padding-left:32px;padding-right:32px}}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  border-bottom:1px solid transparent;
  transition:background .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,0),rgba(255,255,255,.16),rgba(255,255,255,0));
  transition:background .2s ease;
}
.site-header.is-scrolled{
  background:rgba(10,13,17,.74);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:0 14px 34px -26px rgba(0,0,0,.95);
}
.site-header.is-scrolled::after{
  background:linear-gradient(90deg,rgba(255,106,26,0),rgba(255,138,71,.55),rgba(255,106,26,0));
}
.nav-shell{position:relative;display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px}
.nav-left,.nav-right{display:flex;align-items:center;gap:26px}
.nav-link{
  position:relative;font-size:15px;color:var(--text-2);padding:6px 2px;white-space:nowrap;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:-2px;height:2px;border-radius:2px;
  background:var(--brand);transition:left .22s ease,right .22s ease;
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{left:0;right:0}
.nav-link.is-active{color:var(--brand)}
.nav-link.is-active::after{left:0;right:0}

.brand{display:flex;align-items:center;gap:10px;white-space:nowrap}
@media (min-width:1024px){
  .brand{position:absolute;left:50%;transform:translateX(-50%);}
}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  height:34px;padding:0 11px;border-radius:10px;
  font-family:var(--font-num);font-weight:700;font-size:15px;letter-spacing:.02em;
  color:#0A0D11;background:linear-gradient(135deg,#FF8A47,#FF6A1A);
  box-shadow:0 10px 26px -14px rgba(255,106,26,.95);
}
.brand-text{font-size:16px;font-weight:600;letter-spacing:.01em}
.brand-text em{font-style:normal;color:var(--brand);margin-left:2px}

.icon-btn{
  display:none;width:40px;height:40px;border-radius:12px;
  align-items:center;justify-content:center;font-size:15px;
  border:1px solid var(--glass-line);background:rgba(255,255,255,.04);color:var(--text);
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);background:rgba(255,106,26,.08)}

@media (max-width:1023.98px){
  .nav-shell{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:12px}
  .nav-left,.nav-right{display:none}
  .brand{grid-column:2;justify-self:center;position:static;transform:none}
  .menu-btn{grid-column:1;display:inline-flex}
  .cta-icon{grid-column:3;display:inline-flex}
}

/* 移动端抽屉 */
.drawer{
  position:fixed;top:0;left:0;right:0;z-index:55;
  padding:84px 20px 24px;
  background:rgba(12,16,22,.97);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(255,106,26,.28);
  box-shadow:0 30px 60px -30px rgba(0,0,0,.95);
  transform:translateY(-102%);
  transition:transform .26s ease;
}
.drawer.is-open{transform:translateY(0)}
.drawer-nav{display:flex;flex-direction:column}
.drawer-link{
  font-size:16px;line-height:52px;color:var(--text-2);
  border-bottom:1px solid var(--line);
  transition:color .2s ease,padding-left .2s ease;
}
.drawer-link:hover,.drawer-link.is-active{color:var(--brand)}
.drawer-link:hover{padding-left:4px}
.drawer-cta{width:100%;margin-top:20px}
.drawer-contact{margin-top:14px;font-size:13px;color:var(--text-3);text-align:center}
@media (min-width:1024px){.drawer{display:none}}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-size:15px;font-weight:600;padding:12px 26px;
  white-space:nowrap;
  transition:transform .2s ease,background .2s ease,box-shadow .2s ease,color .2s ease,border-color .2s ease;
}
.btn-sm{padding:9px 20px;font-size:14px}
.btn-primary{background:var(--brand);color:#0A0D11;box-shadow:0 14px 34px -16px rgba(255,106,26,.9)}
.btn-primary:hover{background:var(--brand-light);box-shadow:0 20px 44px -16px rgba(255,106,26,1);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 8px 20px -14px rgba(255,106,26,.85)}
.btn-ghost{background:transparent;border:1px solid var(--glass-line);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand);background:rgba(255,106,26,.07);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;
}

.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;color:var(--brand);font-weight:600;
  border-bottom:1px dashed rgba(255,106,26,.6);padding-bottom:2px;
  transition:border-color .2s ease,color .2s ease;
}
.text-link i{font-size:12px;transition:transform .2s ease}
.text-link:hover{border-bottom-style:solid;color:var(--brand-light)}
.text-link:hover i{transform:translateX(2px)}

/* ============ 徽章 / 卡片 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;letter-spacing:.06em;
  padding:5px 12px;border-radius:999px;line-height:1.4;
}
.badge-brand{background:rgba(255,106,26,.12);color:var(--brand-light);border:1px solid rgba(255,106,26,.3)}
.badge-accent{background:rgba(43,217,168,.12);color:var(--accent);border:1px solid rgba(43,217,168,.26)}

.card-glass{
  position:relative;
  background:var(--glass);
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--r-lg);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.card-glass:hover{transform:translateY(-4px);border-color:rgba(255,106,26,.35);box-shadow:var(--glow)}
.card-solid{
  position:relative;
  background:var(--card-solid);
  border:1px solid var(--line);
  border-radius:var(--r);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.05);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.card-solid:hover{transform:translateY(-4px);border-color:rgba(255,106,26,.35);box-shadow:var(--glow)}

/* ============ 区块节奏 ============ */
.section{position:relative;padding:96px 0}
@media (max-width:1023.98px){.section{padding:72px 0}}
@media (max-width:767.98px){.section{padding:48px 0}}
.tone-glass{background:linear-gradient(180deg,rgba(255,255,255,.028),rgba(255,255,255,0))}
.tone-grid{
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:28px 28px;
}
.tone-grid::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(90% 70% at 50% 40%,rgba(10,13,17,.55),#0A0D11 78%);
}

.section-head{max-width:760px;margin-bottom:40px;position:relative;z-index:1}
@media (max-width:767.98px){.section-head{margin-bottom:28px}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.1em;color:var(--brand);
}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--brand)}
.section-head h2{
  margin-top:12px;
  font-size:clamp(24px,2.6vw,36px);
  line-height:1.3;font-weight:700;color:#fff;
}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px;max-width:640px}
.section-head-row{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:20px;flex-wrap:wrap;margin-bottom:36px;position:relative;z-index:1;
}
.section-head-row .section-head{margin-bottom:0}

/* ============ Hero ============ */
.hero{position:relative;padding:168px 0 96px;overflow:hidden}
.hero-bg{
  position:absolute;inset:0;
  background-position:center;background-size:cover;background-repeat:no-repeat;
  opacity:.42;
}
.hero-mask{
  position:absolute;inset:0;
  background:
    radial-gradient(110% 80% at 12% 6%, rgba(255,106,26,.16), transparent 55%),
    linear-gradient(180deg,rgba(10,13,17,.78) 0%,rgba(10,13,17,.93) 58%,#0A0D11 100%);
}
.hero-grid{
  position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:28px 28px;
  -webkit-mask-image:radial-gradient(70% 60% at 50% 32%,#000,transparent 82%);
  mask-image:radial-gradient(70% 60% at 50% 32%,#000,transparent 82%);
}
.hero-inner{position:relative;z-index:1;display:grid;gap:44px;grid-template-columns:1fr}
@media (min-width:1024px){
  .hero-inner{grid-template-columns:7fr 5fr;gap:56px;align-items:center}
}
.hero-copy h1{
  margin-top:20px;
  font-size:clamp(30px,4.2vw,54px);
  line-height:1.2;font-weight:700;color:#fff;
}
.hero-sub{
  margin-top:18px;font-size:17px;line-height:1.8;color:var(--text-2);max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-stats{
  display:flex;flex-wrap:wrap;margin-top:38px;padding-top:22px;
  border-top:1px solid var(--line);
}
.hero-stat{
  flex:1 1 50%;min-width:120px;padding:0 16px 14px 0;position:relative;
}
.hero-stat::after{
  content:"";position:absolute;right:0;top:4px;bottom:18px;width:1px;
  background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(255,255,255,.16),rgba(255,255,255,.02));
}
@media (min-width:640px){
  .hero-stat{flex:1 1 0;padding:0 18px}
  .hero-stat:first-child{padding-left:0}
  .hero-stat:last-child{padding-right:0}
}
.hero-stat:last-child::after{display:none}
.hero-stat b{
  display:block;font-family:var(--font-num);font-size:26px;font-weight:700;
  letter-spacing:-.01em;color:#fff;
}
.hero-stat b span{font-size:13px;font-weight:500;color:var(--text-2);margin-left:3px;letter-spacing:0}
.hero-stat i{display:block;font-style:normal;font-size:12.5px;color:var(--text-3);margin-top:6px}

.hero-card{padding:26px 24px;position:relative;overflow:hidden}
.hero-card::after{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,138,71,.7),transparent);
}
.hero-card-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.hero-card-num{font-family:var(--font-num);font-size:12px;color:var(--text-3);letter-spacing:.08em}
.hero-points{margin-top:20px;display:grid;gap:14px}
.hero-points li{display:flex;gap:10px;font-size:15px;color:var(--text-2);line-height:1.7}
.hero-points li i{color:var(--accent);font-size:14px;margin-top:5px;flex:0 0 auto}
.hero-thumb{margin-top:22px}
.hero-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;border:1px solid var(--line)}
.hero-thumb figcaption{margin-top:8px;font-size:12.5px;color:var(--text-3);text-align:center}

/* ============ 功能分组 2+1 ============ */
.feature-grid{display:grid;grid-template-columns:1fr;gap:20px;position:relative;z-index:1}
@media (min-width:1024px){
  .feature-grid{grid-template-columns:7fr 5fr;gap:24px;align-items:stretch}
}
.feature-main{display:flex;flex-direction:column;overflow:hidden}
@media (min-width:768px){
  .feature-main{flex-direction:row;align-items:stretch}
}
.feature-main-body{padding:28px 26px;flex:1 1 55%}
.feature-main h3,.mini-card h3{
  margin-top:14px;font-size:20px;line-height:1.4;font-weight:600;color:#fff;
}
.feature-media{flex:1 1 45%;min-height:220px;position:relative}
.feature-media img{width:100%;height:100%;object-fit:cover;border-radius:0}
@media (max-width:767.98px){.feature-media img{border-radius:0 0 var(--r-lg) var(--r-lg)}}
@media (min-width:768px){.feature-media img{border-radius:0 var(--r-lg) var(--r-lg) 0}}

.feature-list{margin-top:22px;display:grid;gap:18px}
.feature-list li{display:flex;gap:12px}
.feature-list li > i{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;color:var(--brand);
  background:rgba(255,106,26,.1);border:1px solid rgba(255,106,26,.24);
}
.feature-list strong{display:block;font-size:15.5px;font-weight:600;color:var(--text)}
.feature-list span{display:block;font-size:14.5px;color:var(--text-2);line-height:1.7;margin-top:4px}

.feature-side{display:grid;gap:20px;grid-template-columns:1fr}
@media (min-width:768px) and (max-width:1023.98px){
  .feature-side{grid-template-columns:1fr 1fr}
}
.mini-card{padding:24px 22px}
.mini-card p{margin-top:10px;font-size:14.5px;color:var(--text-2);line-height:1.75}

.pill-row{
  display:flex;gap:10px;margin-top:30px;padding:4px 0 6px;
  overflow-x:auto;scrollbar-width:none;position:relative;z-index:1;
}
.pill-row::-webkit-scrollbar{display:none}
.pill{
  flex:0 0 auto;padding:9px 18px;border-radius:999px;font-size:14px;
  color:var(--text-2);border:1px solid var(--glass-line);background:rgba(255,255,255,.03);
  transition:color .2s ease,background .2s ease,border-color .2s ease,transform .2s ease;
}
.pill:hover{color:var(--text);border-color:rgba(255,106,26,.42)}
.pill.is-active{background:var(--brand);border-color:var(--brand);color:#0A0D11;font-weight:600}
.pill:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.pill-panel{
  margin-top:18px;padding:22px 24px;border-radius:var(--r);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  min-height:96px;position:relative;z-index:1;
}
.pill-panel p{font-size:16px;color:var(--text-2);line-height:1.8}

/* ============ 使用场景 交错 ============ */
.scene-list{position:relative;z-index:1}
.scene-row{
  display:grid;grid-template-columns:1fr;gap:24px;align-items:center;
  padding:34px 0;border-bottom:1px solid var(--line);
}
.scene-row:last-child{border-bottom:0}
@media (min-width:900px){
  .scene-row{grid-template-columns:1fr 1fr;gap:56px;padding:44px 0}
  .scene-row.reverse .scene-media{order:2}
}
.scene-media{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line)}
.scene-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0}
.scene-num{
  position:absolute;left:14px;top:6px;
  font-family:var(--font-num);font-size:78px;font-weight:800;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(255,255,255,.16);
  pointer-events:none;user-select:none;
}
.scene-body h3{font-size:22px;line-height:1.4;font-weight:600;color:#fff}
.scene-body p{margin-top:14px;font-size:16px;color:var(--text-2);line-height:1.85;max-width:520px}
.scene-body .text-link{margin-top:18px}

/* ============ 案例 ============ */
.case-grid{display:grid;grid-template-columns:1fr;gap:20px;position:relative;z-index:1}
@media (min-width:1024px){.case-grid{grid-template-columns:8fr 4fr}}
.case-main{overflow:hidden;display:flex;flex-direction:column}
.case-media{position:relative;overflow:hidden}
.case-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0}
.case-tag{position:absolute;left:16px;top:16px}
.case-body{padding:26px 26px 28px}
.case-body h3{font-size:22px;font-weight:600;color:#fff;line-height:1.4}
.case-body > p{margin-top:12px;font-size:15.5px;color:var(--text-2);line-height:1.8}
.case-metrics{
  display:flex;flex-wrap:wrap;gap:0;margin-top:22px;padding-top:20px;
  border-top:1px solid var(--line);
}
.case-metrics div{flex:1 1 0;min-width:110px;padding-right:16px;position:relative}
.case-metrics div::after{
  content:"";position:absolute;right:0;top:2px;bottom:2px;width:1px;
  background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(255,255,255,.16),rgba(255,255,255,.02));
}
.case-metrics div:last-child::after{display:none}
.case-metrics b{display:block;font-family:var(--font-num);font-size:24px;font-weight:700;color:var(--accent)}
.case-metrics b span{font-size:12.5px;color:var(--text-2);margin-left:3px;font-weight:500}
.case-metrics i{display:block;font-style:normal;font-size:12.5px;color:var(--text-3);margin-top:4px}
.case-main blockquote{
  margin-top:22px;padding:14px 18px;font-size:14.5px;color:var(--text-2);
  border-left:3px solid var(--brand);border-radius:0 12px 12px 0;
  background:rgba(255,255,255,.04);
}
.case-mini-wrap{display:grid;gap:20px;grid-template-columns:1fr}
@media (min-width:640px) and (max-width:1023.98px){.case-mini-wrap{grid-template-columns:1fr 1fr}}
.case-mini{display:flex;flex-direction:column;justify-content:space-between;min-height:150px}
.case-mini b{font-family:var(--font-num);font-size:22px;color:var(--accent)}

.cert-row{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;position:relative;z-index:1;
}
.cert-row span{
  font-size:13px;color:var(--text-3);padding:8px 16px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.025);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.cert-row span:hover{color:var(--accent);border-color:rgba(43,217,168,.4);background:rgba(43,217,168,.06)}

/* ============ 方案价格 ============ */
.plan-grid{display:grid;grid-template-columns:1fr;gap:20px;position:relative;z-index:1}
@media (min-width:1024px){.plan-grid{grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}}
.plan-card{
  display:flex;flex-direction:column;padding:30px 26px;border-radius:var(--r-lg);
  background:var(--card-solid);border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.05);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.plan-card:hover{transform:translateY(-4px);border-color:rgba(255,106,26,.35);box-shadow:var(--glow)}
.plan-card.is-featured{
  background:linear-gradient(180deg,rgba(255,106,26,.1),rgba(255,255,255,.03));
  border-color:rgba(255,106,26,.55);
  box-shadow:0 26px 60px -30px rgba(255,106,26,.65);
  position:relative;
}
@media (min-width:1024px){.plan-card.is-featured{transform:scale(1.04)}}
.plan-card.is-featured::before{
  content:"常用选择";position:absolute;top:-12px;left:26px;
  padding:4px 13px;border-radius:999px;background:var(--brand);color:#0A0D11;
  font-size:12px;font-weight:700;letter-spacing:.06em;
}
.plan-name{font-size:19px;font-weight:700;color:#fff}
.plan-for{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.7}
.plan-list{margin-top:22px;display:grid;gap:12px;flex:1}
.plan-list li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2);line-height:1.7}
.plan-list li i{color:var(--accent);font-size:13px;margin-top:5px;flex:0 0 auto}
.plan-price{margin-top:24px;padding-top:18px;border-top:1px solid var(--line)}
.plan-price b{display:block;font-family:var(--font-num);font-size:20px;color:#fff;font-weight:700}
.plan-price i{display:block;font-style:normal;font-size:12.5px;color:var(--text-3);margin-top:4px}
.plan-card .btn{margin-top:20px;width:100%}

/* ============ 最新信息 ============ */
.news-grid{display:grid;grid-template-columns:1fr;gap:20px;position:relative;z-index:1}
@media (min-width:1024px){.news-grid{grid-template-columns:7fr 5fr;gap:24px}}
.news-lead{display:block;overflow:hidden}
.news-lead-media{position:relative;overflow:hidden}
.news-lead-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0}
.news-badge{position:absolute;left:16px;top:16px}
.news-lead-body{padding:24px 24px 26px}
.news-lead-body h3{font-size:20px;font-weight:600;color:#fff;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-lead-body p{margin-top:12px;font-size:15px;color:var(--text-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:18px;flex-wrap:wrap;
}
.news-date{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-num);font-size:13px;color:var(--accent);
}
.news-date i{font-size:12px;color:var(--accent-dim)}

.news-list{display:grid;gap:14px;align-content:start}
.news-item{
  display:grid;grid-template-columns:96px 1fr;gap:14px;padding:14px;
  border-radius:var(--r);background:var(--card-solid);border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.05);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.news-item:hover{transform:translateY(-4px);border-color:rgba(255,106,26,.35);box-shadow:var(--glow)}
.news-item img{width:96px;height:72px;object-fit:cover;border-radius:10px}
.news-item-body{display:flex;flex-direction:column;justify-content:space-between;min-width:0}
.news-item-body h4{
  font-size:15px;font-weight:600;color:var(--text);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-item .news-meta{margin-top:8px;justify-content:flex-start;gap:10px}
.news-item .badge{padding:3px 9px;font-size:11px}

.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  min-height:180px;padding:32px 24px;text-align:center;
  border-radius:var(--r-lg);border:1px dashed rgba(255,255,255,.16);
  background:rgba(255,255,255,.02);grid-column:1 / -1;
}
.empty-state i{font-size:28px;color:var(--text-3)}
.empty-state p{font-size:15px;color:var(--text-2)}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:1fr;gap:14px;position:relative;z-index:1}
@media (min-width:900px){.faq-grid{grid-template-columns:1fr 1fr;gap:16px}}
.faq-item{
  border-radius:var(--r);background:rgba(255,255,255,.035);border:1px solid var(--line);
  overflow:hidden;transition:border-color .2s ease,background .2s ease;
}
.faq-item:hover{border-color:rgba(255,255,255,.2)}
.faq-item.is-open{border-color:rgba(255,106,26,.38);background:rgba(255,255,255,.055)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;min-height:60px;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);line-height:1.5;
  transition:color .2s ease;
}
.faq-q:hover{color:#fff}
.faq-icon{flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform .24s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px}
.faq-icon::before{left:0;top:10px;width:22px;height:2px}
.faq-icon::after{left:10px;top:0;width:2px;height:22px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.is-open .faq-a{max-height:420px}
.faq-a p{padding:0 20px 20px;font-size:15.5px;color:var(--text-2);line-height:1.8}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  border:1px solid var(--glass-line);background:rgba(255,255,255,.045);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  padding:34px 30px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cta-band::before,.cta-band::after{
  content:"";position:absolute;width:320px;height:320px;border-radius:50%;pointer-events:none;
  background:radial-gradient(circle,rgba(255,106,26,.18),transparent 70%);
}
.cta-band::before{left:-130px;top:-150px}
.cta-band::after{right:-140px;bottom:-170px}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;color:#fff;line-height:1.35}
.cta-band p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;margin-top:0;padding:72px 0 0;
  background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(0,0,0,.36));
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,106,26,.55),transparent);
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px}
@media (min-width:768px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}}
.footer-title{font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--brand);margin-bottom:16px}
.footer-brand .brand{margin-bottom:16px;position:static;transform:none}
.footer-desc{font-size:14px;color:var(--text-2);line-height:1.8;max-width:340px}
.footer-links a{
  display:block;font-size:14.5px;color:var(--text-2);padding:6px 0;
  transition:color .2s ease,transform .2s ease;
}
.footer-links a:hover{color:var(--brand);transform:translateX(-2px)}
.footer-info li{
  display:flex;gap:10px;font-size:14px;color:var(--text-2);padding:6px 0;line-height:1.7;
}
.footer-info li i{color:var(--brand);font-size:13px;margin-top:6px;flex:0 0 auto}
.footer-bottom{
  margin-top:52px;padding:20px 0 26px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
}
.footer-bottom p{font-size:12.5px;color:var(--text-3)}
.to-top{
  display:inline-flex;align-items:center;gap:7px;font-size:12.5px;color:var(--text-2);
  padding:7px 14px;border-radius:999px;border:1px solid var(--line);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.to-top:hover{color:var(--brand);border-color:rgba(255,106,26,.5);background:rgba(255,106,26,.07)}

/* ============ 进场动画 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal,.reveal.is-visible{opacity:1;transform:none;transition:none}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* roulang page: article */
:root{
  --bg-0:#0A0D11;
  --bg-1:#121820;
  --brand:#FF6A1A;
  --brand-deep:#C94F08;
  --brand-light:#FF8A47;
  --accent:#2BD9A8;
  --accent-dim:#1B8F72;
  --danger:#FF5A5F;
  --text:#E6EAEF;
  --text-2:#A3ADB8;
  --text-3:#6E7883;
  --line:rgba(255,255,255,0.08);
  --line-strong:rgba(255,255,255,0.14);
  --glass:rgba(255,255,255,0.045);
  --solid:rgba(18,24,32,0.72);
  --radius:16px;
  --radius-lg:20px;
  --radius-sm:12px;
  --glow:0 24px 56px -24px rgba(255,106,26,0.4);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --mono:"Inter","DIN Alternate",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:104px}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:linear-gradient(180deg,#0A0D11 0%,#121820 60%,#0C1015 100%) fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,0.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,0.045) 1px,transparent 1px);
  background-size:24px 24px;
  -webkit-mask-image:radial-gradient(circle at 50% 0%,#000 0%,rgba(0,0,0,0.35) 45%,transparent 78%);
  mask-image:radial-gradient(circle at 50% 0%,#000 0%,rgba(0,0,0,0.35) 45%,transparent 78%);
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
a,button{transition:color .2s ease-out,background-color .2s ease-out,border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:rgba(255,106,26,0.35);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0B0F14}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,0.12);border-radius:999px}
::-webkit-scrollbar-thumb:hover{background:rgba(255,106,26,0.55)}

.shell{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;position:relative;z-index:2}

/* ===== header ===== */
.site-header{position:fixed;top:0;left:0;right:0;z-index:60;background:transparent;border-bottom:1px solid transparent;transition:background-color .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,0.12),transparent)}
.site-header.is-scrolled{background:rgba(10,13,17,0.78);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-bottom-color:var(--line-strong);box-shadow:0 14px 34px -22px rgba(0,0,0,0.95)}
.header-inner{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;height:76px}
.nav-left{display:flex;align-items:center;gap:26px;justify-self:start}
.nav-right{display:flex;align-items:center;gap:20px;justify-self:end}
.nav-link{position:relative;padding:8px 2px;font-size:15px;color:var(--text-2);white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;border-radius:2px;background:var(--brand);transform:translateX(-50%);transition:width .22s ease-out}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after,.nav-link.is-active::after{width:100%}
.nav-link.is-active{color:var(--text);font-weight:600}
.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center;white-space:nowrap;padding:0 24px}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;height:34px;padding:0 12px;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--brand-deep));color:#141A20;font-weight:800;font-size:15px;letter-spacing:0.06em;box-shadow:0 0 26px -10px rgba(255,106,26,0.9)}
.brand-text{font-size:17px;font-weight:700;color:var(--text);letter-spacing:0.01em}
.brand-text em{font-style:normal;color:var(--brand-light)}
.hamburger{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line-strong);background:var(--glass);flex-direction:column;justify-content:center;align-items:center;gap:4px;cursor:pointer;justify-self:start}
.hamburger span{display:block;width:16px;height:2px;border-radius:2px;background:var(--text);transition:transform .2s ease-out,opacity .2s ease-out}
.hamburger.is-active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.hamburger.is-active span:nth-child(2){opacity:0}
.hamburger.is-active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.btn-cta-icon{display:none;width:40px;height:40px;border-radius:999px;align-items:center;justify-content:center;background:var(--brand);color:#141A20;font-size:15px;justify-self:end;box-shadow:0 12px 28px -14px rgba(255,106,26,0.9)}
.btn-cta-icon:hover{background:var(--brand-light);transform:translateY(-1px)}

.mobile-drawer{display:none;position:fixed;top:64px;left:0;right:0;z-index:55;background:rgba(9,12,16,0.98);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border-bottom:1px solid var(--line-strong);padding:10px 16px 22px;opacity:0;visibility:hidden;transform:translateY(-10px);transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s}
.mobile-drawer.is-open{opacity:1;visibility:visible;transform:none}
.drawer-link{display:flex;align-items:center;justify-content:space-between;font-size:16px;line-height:52px;color:var(--text-2);border-bottom:1px solid var(--line)}
.drawer-link:hover{color:var(--brand-light)}
.drawer-link.is-active{color:var(--brand-light);font-weight:600}
.drawer-cta{display:flex;width:100%;margin-top:18px}
.drawer-contact{margin-top:14px;display:flex;flex-wrap:wrap;gap:6px 18px;font-size:13px;color:var(--text-3)}

/* ===== buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:999px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;white-space:nowrap}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--brand);color:#141A20;box-shadow:0 14px 32px -16px rgba(255,106,26,0.9)}
.btn-primary:hover{background:var(--brand-light);transform:translateY(-1px);box-shadow:0 20px 44px -18px rgba(255,138,71,0.95)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 8px 18px -12px rgba(255,106,26,0.8)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:rgba(255,106,26,0.55);background:rgba(255,106,26,0.06);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand-light);font-size:14px;font-weight:600;border-bottom:1px dashed rgba(255,138,71,0.6);padding-bottom:2px}
.link-arrow i{transition:transform .2s ease-out}
.link-arrow:hover{border-bottom-style:solid;border-bottom-color:var(--brand-light)}
.link-arrow:hover i{transform:translateX(3px)}

/* ===== layout ===== */
.page-main{position:relative;z-index:2;padding-top:118px}
.section{padding:56px 0}
.section-head{margin-bottom:28px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:0.08em;color:var(--brand-light);text-transform:uppercase}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--brand)}
.section-title{margin:10px 0 0;font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.3}
.section-sub{margin:12px 0 0;color:var(--text-2);font-size:15.5px;max-width:760px}

/* ===== breadcrumb ===== */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);min-width:0}
.breadcrumb a{color:var(--text-3);white-space:nowrap}
.breadcrumb a:hover{color:var(--brand-light)}
.breadcrumb .sep{color:rgba(255,255,255,0.2)}
.breadcrumb .current{color:var(--brand-light);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}

/* ===== article head ===== */
.article-head{padding:22px 0 4px}
.badge{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:rgba(255,106,26,0.12);color:var(--brand-light);font-size:12px;font-weight:600;letter-spacing:0.06em;border:1px solid rgba(255,106,26,0.22)}
.badge-accent{background:rgba(43,217,168,0.12);color:var(--accent);border-color:rgba(43,217,168,0.24)}
.article-title{margin:16px 0 0;font-size:clamp(28px,3.6vw,44px);font-weight:700;line-height:1.24;letter-spacing:0}
.article-meta{margin-top:16px;display:flex;flex-wrap:wrap;align-items:center;gap:6px 12px;font-size:13.5px;color:var(--text-3)}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-meta .dot{color:rgba(255,255,255,0.18)}
.article-meta i{color:var(--accent-dim)}

/* ===== article grid ===== */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:52px;align-items:start;margin-top:32px}
.article-main{min-width:0}
.article-aside{position:sticky;top:104px;display:flex;flex-direction:column;gap:18px}
.side-card{background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);padding:20px;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);box-shadow:inset 0 1px 0 rgba(255,255,255,0.08)}
.side-title{margin:0 0 14px;font-size:12px;font-weight:700;letter-spacing:0.08em;color:var(--brand-light)}
.toc-list{display:flex;flex-direction:column;max-height:46vh;overflow:auto}
.toc-link{display:block;padding:7px 10px;font-size:14px;line-height:1.5;color:var(--text-2);border-left:2px solid var(--line)}
.toc-link.is-sub{padding-left:24px;font-size:13px;color:var(--text-3)}
.toc-link:hover{color:var(--text);border-left-color:rgba(255,106,26,0.5)}
.toc-link.is-active{color:var(--brand-light);border-left-color:var(--brand);background:linear-gradient(90deg,rgba(255,106,26,0.12),transparent)}
.toc-empty{margin:0;font-size:13px;color:var(--text-3)}
.rel-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px}
.rel-item{display:flex;gap:12px;align-items:flex-start}
.rel-item img{width:64px;height:48px;object-fit:cover;border-radius:8px;background:#161C24;border:1px solid var(--line)}
.rel-item .rel-title{font-size:14px;line-height:1.45;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-item:hover .rel-title{color:var(--brand-light)}
.rel-item .rel-tag{font-size:12px;color:var(--text-3);margin-top:4px}
.side-cta{background:linear-gradient(140deg,rgba(255,106,26,0.14),rgba(43,217,168,0.06)),rgba(255,255,255,0.03);border-color:rgba(255,106,26,0.28)}
.side-cta p{margin:0 0 14px;font-size:14px;line-height:1.7;color:var(--text-2)}

/* ===== article body ===== */
.article-body{font-size:17px;line-height:1.9;color:var(--text);max-width:800px}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em;color:var(--text)}
.article-body h2{position:relative;margin:2.5em 0 1em;padding-left:16px;font-size:clamp(20px,2vw,26px);font-weight:700;line-height:1.4;color:var(--text)}
.article-body h2::before{content:"";position:absolute;left:0;top:0.28em;width:4px;height:1em;border-radius:2px;background:var(--brand);box-shadow:0 0 16px rgba(255,106,26,0.6)}
.article-body.is-long h2{margin-top:3.2em;padding-top:1.8em;border-top:1px solid var(--line);border-top-width:1px}
.article-body h3{position:relative;margin:2em 0 0.8em;padding-left:20px;font-size:20px;font-weight:600;line-height:1.5}
.article-body h3::before{content:"";position:absolute;left:2px;top:0.62em;width:8px;height:8px;background:var(--accent);transform:rotate(45deg)}
.article-body blockquote{margin:1.8em 0;padding:18px 20px;border-left:3px solid var(--brand);border-radius:0 12px 12px 0;background:var(--glass);color:var(--text-2);font-size:16px}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.4em}
.article-body li{margin:0.5em 0}
.article-body ul li::marker{color:var(--brand)}
.article-body ol li::marker{color:var(--brand-light);font-family:var(--mono)}
.article-body a{color:var(--brand-light);border-bottom:1px dashed rgba(255,138,71,0.6)}
.article-body a:hover{border-bottom-style:solid}
.article-body img{margin:1.6em 0;border-radius:12px;border:1px solid var(--line);width:100%;background:#161C24}
.article-body figure{margin:1.6em 0}
.article-body figcaption{margin-top:10px;text-align:center;font-size:13px;color:var(--text-3)}
.article-body strong{color:#fff;font-weight:600}
.article-body hr{margin:2.4em 0;border:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,0.14),transparent)}
.article-body table{width:100%;margin:1.6em 0;border-collapse:collapse;font-size:15px;background:rgba(255,255,255,0.03);border:1px solid var(--line-strong);border-radius:12px;overflow:hidden}
.article-body th,.article-body td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
.article-body th{background:rgba(255,106,26,0.12);color:var(--brand-light);font-weight:600;font-size:14px}
.article-body tr:last-child td{border-bottom:0}
.table-wrap{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}

.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:280px;padding:44px 24px;border:1px dashed var(--line-strong);border-radius:var(--radius-lg);background:var(--glass);text-align:center}
.empty-state i{font-size:30px;color:var(--brand-light)}
.empty-state p{margin:16px 0 6px;font-size:18px;font-weight:600}
.empty-state .empty-sub{margin:0 0 20px;font-size:14px;color:var(--text-3);font-weight:400}

/* ===== prev / next ===== */
.prev-next{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:52px}
.pn-card{display:block;padding:20px 22px;border-radius:var(--radius);border:1px solid var(--line);background:rgba(18,24,32,0.6);transition:border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out}
.pn-card:hover{border-color:rgba(255,106,26,0.35);transform:translateY(-4px);box-shadow:var(--glow)}
.pn-label{font-size:12px;letter-spacing:0.08em;color:var(--accent);font-weight:700}
.pn-title{margin-top:10px;font-size:16px;font-weight:600;line-height:1.5;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pn-card:hover .pn-title{color:var(--brand-light)}
.pn-next{text-align:right}

/* ===== related cards ===== */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{display:flex;flex-direction:column;border-radius:var(--radius);border:1px solid var(--line);background:rgba(18,24,32,0.62);overflow:hidden;transition:border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out}
.rel-card:hover{border-color:rgba(255,106,26,0.35);transform:translateY(-4px);box-shadow:var(--glow)}
.rel-card .thumb{position:relative;aspect-ratio:16/9;background:linear-gradient(140deg,#161C24,#0E1319);overflow:hidden}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover}
.rel-card .thumb .badge{position:absolute;left:12px;top:12px}
.rel-card .body{padding:18px 20px 20px}
.rel-card h3{margin:0 0 8px;font-size:16.5px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card p{margin:0 0 14px;font-size:14px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.rel-card .foot{display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--text-3)}
.back-row{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:40px}

/* ===== CTA band ===== */
.cta-band{margin:88px 0 0;position:relative;overflow:hidden;border-radius:var(--radius-lg);border:1px solid var(--line-strong);background:linear-gradient(120deg,rgba(255,106,26,0.13),rgba(43,217,168,0.05)),rgba(255,255,255,0.03);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);padding:40px;display:flex;align-items:center;justify-content:space-between;gap:28px;box-shadow:inset 0 1px 0 rgba(255,255,255,0.08)}
.cta-band::before,.cta-band::after{content:"";position:absolute;width:280px;height:280px;border-radius:50%;pointer-events:none}
.cta-band::before{left:-100px;top:-120px;background:radial-gradient(circle,rgba(255,106,26,0.18),transparent 70%)}
.cta-band::after{right:-110px;bottom:-140px;background:radial-gradient(circle,rgba(43,217,168,0.14),transparent 70%)}
.cta-band h2{margin:0 0 10px;font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.32}
.cta-band p{margin:0;font-size:15px;color:var(--text-2)}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px;position:relative;z-index:1}
.cta-copy{position:relative;z-index:1;max-width:640px}

/* ===== footer ===== */
.site-footer{position:relative;z-index:2;margin-top:96px;background:linear-gradient(180deg,rgba(10,13,17,0) 0%,rgba(9,12,16,0.92) 42%,#080B0F 100%);border-top:1px solid var(--line)}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,106,26,0.55),transparent)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding:64px 0 40px}
.footer-brand .brand{justify-self:start;padding:0}
.footer-desc{margin:18px 0 0;font-size:14px;line-height:1.8;color:var(--text-3);max-width:320px}
.footer-title{margin:0 0 16px;font-size:12px;font-weight:700;letter-spacing:0.08em;color:var(--brand-light)}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:var(--text-2)}
.footer-links a:hover{color:var(--brand-light);transform:translateX(-2px)}
.footer-info{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.footer-info li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.6}
.footer-info i{color:var(--accent-dim);margin-top:4px}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding:20px 0 28px;border-top:1px solid var(--line);font-size:12.5px;color:var(--text-3)}
.to-top{display:inline-flex;align-items:center;gap:8px;color:var(--text-2)}
.to-top:hover{color:var(--brand-light)}

.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease-out,transform .5s ease-out}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* ===== responsive ===== */
@media (max-width:1023px){
  .shell{padding:0 24px}
  .header-inner{height:70px}
  .article-layout{grid-template-columns:1fr;gap:40px}
  .article-aside{position:static}
  .article-body{max-width:none}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 32px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px}
}
@media (max-width:767px){
  .shell{padding:0 16px}
  .nav-left,.nav-right{display:none}
  .hamburger{display:flex}
  .btn-cta-icon{display:inline-flex}
  .mobile-drawer{display:block}
  .header-inner{height:64px}
  .brand{padding:0 12px}
  .brand-text{font-size:15px}
  .brand-mark{height:30px;padding:0 10px;font-size:13px}
  .page-main{padding-top:92px}
  .section{padding:40px 0}
  .article-layout{margin-top:24px;gap:32px}
  .article-title{font-size:26px}
  .article-body{font-size:16px;line-height:1.85}
  .prev-next{grid-template-columns:1fr}
  .pn-next{text-align:left}
  .rel-grid{grid-template-columns:1fr}
  .cta-band{margin-top:60px;padding:26px 20px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding:44px 0 28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (min-width:1024px){
  .mobile-drawer{display:none !important}
}

/* roulang page: category1 */
:root{
    --bg-0:#0A0D11;
    --bg-1:#121820;
    --bg-2:#0E1319;
    --primary:#FF6A1A;
    --primary-deep:#C94F08;
    --primary-light:#FF8A47;
    --accent:#2BD9A8;
    --accent-dim:#1B8F72;
    --text:#E6EAEF;
    --text-2:#A3ADB8;
    --text-3:#6E7883;
    --line:rgba(255,255,255,.08);
    --line-strong:rgba(255,255,255,.14);
    --glass:rgba(255,255,255,.045);
    --glass-soft:rgba(255,255,255,.028);
    --danger:#FF5A5F;
    --r-sm:10px;
    --r:16px;
    --r-lg:20px;
    --pill:999px;
    --shell:1200px;
    --header-h:76px;
    --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
    --font-num:"Inter","DIN Alternate",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
    --glow:0 24px 56px -24px rgba(255,106,26,.4);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    padding-top:var(--header-h);
    font-family:var(--font-cn);
    font-size:16.5px;
    line-height:1.8;
    color:var(--text);
    background:linear-gradient(180deg,var(--bg-0) 0%,#0D1218 45%,var(--bg-1) 100%);
    background-attachment:fixed;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  body::before{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    z-index:0;
    background-image:
      repeating-linear-gradient(90deg, rgba(255,255,255,.05) 0 1px, transparent 1px 24px),
      repeating-linear-gradient(0deg, rgba(255,255,255,.05) 0 1px, transparent 1px 24px);
    opacity:.55;
    mask-image:radial-gradient(120% 90% at 50% 0%, #000 20%, transparent 88%);
    -webkit-mask-image:radial-gradient(120% 90% at 50% 0%, #000 20%, transparent 88%);
  }
  img{max-width:100%;display:block;border-style:none;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  input,select,textarea{font:inherit;color:inherit;}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  ul,ol{padding:0;list-style:none;}
  ::selection{background:rgba(255,106,26,.35);color:#fff;}
  ::-webkit-scrollbar{width:10px;height:10px;}
  ::-webkit-scrollbar-track{background:#0A0D11;}
  ::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#2A3340,#171E26);border-radius:8px;border:2px solid #0A0D11;}
  ::-webkit-scrollbar-thumb:hover{background:linear-gradient(180deg,#3A4553,#1E262F);}

  .shell{
    position:relative;
    z-index:1;
    width:100%;
    max-width:var(--shell);
    margin:0 auto;
    padding-left:32px;
    padding-right:32px;
  }

  /* ---------- 头部导航 ---------- */
  .site-header{
    position:fixed;
    top:0;left:0;right:0;
    z-index:80;
    border-bottom:1px solid transparent;
    background:transparent;
    transition:background-color .2s ease, border-color .2s ease, box-shadow .2s ease, backdrop-filter .2s ease;
  }
  .site-header::before{
    content:"";
    position:absolute;
    left:0;right:0;bottom:-1px;
    height:1px;
    background:linear-gradient(90deg,transparent,rgba(255,255,255,.16) 20%,rgba(255,255,255,.16) 80%,transparent);
    opacity:.6;
    transition:opacity .2s ease;
  }
  .site-header.is-scrolled{
    background:rgba(10,13,17,.74);
    -webkit-backdrop-filter:blur(16px) saturate(140%);
    backdrop-filter:blur(16px) saturate(140%);
    border-bottom-color:var(--line-strong);
    box-shadow:0 14px 34px -22px rgba(0,0,0,.95);
  }
  .site-header.is-scrolled::before{opacity:0;}
  .header-inner{
    display:grid;
    grid-template-columns:1fr auto 1fr;
    align-items:center;
    gap:20px;
    min-height:var(--header-h);
  }
  .nav-side{display:flex;align-items:center;min-width:0;}
  .nav-side-left{justify-self:start;}
  .nav-side-right{justify-self:end;gap:10px;}
  .nav-left{display:flex;align-items:center;gap:4px;}
  .nav-link{
    position:relative;
    display:inline-block;
    padding:9px 12px;
    font-size:14px;
    color:var(--text-2);
    border-radius:10px;
    white-space:nowrap;
    transition:color .2s ease, background-color .2s ease;
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:50%;right:50%;
    bottom:3px;
    height:2px;
    border-radius:2px;
    background:var(--primary);
    transition:left .22s ease-out, right .22s ease-out;
  }
  .nav-link:hover{color:var(--text);}
  .nav-link:hover::after{left:12px;right:12px;}
  .nav-link.is-active{color:var(--text);font-weight:600;}
  .nav-link.is-active::after{left:12px;right:12px;}
  .brand{
    justify-self:center;
    display:inline-flex;
    align-items:center;
    gap:10px;
    padding:0 24px;
  }
  .brand-mark{
    font-family:var(--font-num);
    font-weight:700;
    font-size:17px;
    letter-spacing:.02em;
    color:#0A0D11;
    background:linear-gradient(135deg,var(--primary-light),var(--primary));
    padding:5px 10px;
    border-radius:10px;
    box-shadow:inset 0 1px 0 rgba(255,255,255,.4), 0 10px 24px -14px rgba(255,106,26,.9);
  }
  .brand-text{
    font-size:17px;
    font-weight:700;
    letter-spacing:.01em;
    color:var(--text);
    white-space:nowrap;
  }
  .brand-text em{font-style:normal;color:var(--primary);}
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    border-radius:var(--pill);
    font-size:14px;
    font-weight:600;
    padding:11px 22px;
    white-space:nowrap;
    transition:transform .2s ease-out, background-color .2s ease-out, box-shadow .2s ease-out, border-color .2s ease-out, color .2s ease-out;
  }
  .btn-primary{
    background:linear-gradient(135deg,var(--primary-light),var(--primary));
    color:#0A0D11;
    box-shadow:0 12px 30px -16px rgba(255,106,26,.75), inset 0 1px 0 rgba(255,255,255,.32);
  }
  .btn-primary:hover{
    background:linear-gradient(135deg,#FF9C61,var(--primary-light));
    box-shadow:0 20px 44px -16px rgba(255,106,26,.95), inset 0 1px 0 rgba(255,255,255,.4);
    transform:translateY(-1px);
  }
  .btn-primary:active{transform:translateY(1px);box-shadow:0 8px 18px -14px rgba(255,106,26,.7);}
  .btn-ghost{
    background:rgba(255,255,255,.025);
    border:1px solid var(--line-strong);
    color:var(--text);
  }
  .btn-ghost:hover{
    border-color:rgba(255,106,26,.55);
    background:rgba(255,106,26,.07);
    transform:translateY(-1px);
  }
  .btn-ghost:active{transform:translateY(1px);}
  .btn:focus-visible,.icon-btn:focus-visible,.faq-q:focus-visible,.menu-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
  .btn-sm{padding:9px 18px;font-size:13.5px;}
  .btn-block{width:100%;}
  .icon-btn{
    width:40px;height:40px;
    display:inline-flex;align-items:center;justify-content:center;
    border-radius:12px;
    border:1px solid var(--line-strong);
    background:rgba(255,255,255,.03);
    color:var(--text);
    transition:border-color .2s ease, color .2s ease, background-color .2s ease, transform .2s ease;
  }
  .icon-btn:hover{border-color:rgba(255,106,26,.55);color:var(--primary);background:rgba(255,106,26,.08);}
  .menu-toggle{display:none;width:40px;height:40px;align-items:center;justify-content:center;border-radius:12px;border:1px solid var(--line-strong);background:rgba(255,255,255,.03);color:var(--text);}
  .menu-toggle:hover{border-color:rgba(255,106,26,.55);color:var(--primary);}
  .nav-cta-icon{display:none;}

  .drawer{
    position:fixed;
    top:var(--header-h);
    left:0;right:0;
    z-index:79;
    padding:18px 16px 24px;
    background:rgba(9,12,16,.985);
    -webkit-backdrop-filter:blur(18px);
    backdrop-filter:blur(18px);
    border-bottom:1px solid var(--line-strong);
    box-shadow:0 26px 60px -30px rgba(0,0,0,1);
    opacity:0;
    transform:translateY(-14px);
    pointer-events:none;
    transition:opacity .22s ease-out, transform .22s ease-out;
  }
  .drawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
  .drawer-nav{display:flex;flex-direction:column;}
  .drawer-link{
    display:flex;
    align-items:center;
    min-height:52px;
    font-size:16px;
    color:var(--text-2);
    border-bottom:1px solid var(--line);
    transition:color .2s ease, padding-left .2s ease;
  }
  .drawer-link:hover,.drawer-link.is-active{color:var(--primary);padding-left:4px;}
  .drawer-cta{margin-top:18px;width:100%;}
  .drawer-meta{
    margin-top:14px;
    font-size:13px;
    color:var(--text-3);
    display:flex;
    align-items:center;
    gap:8px;
  }
  .drawer-meta i{color:var(--accent);}

  /* ---------- 通用板块 ---------- */
  .section{padding:96px 0;position:relative;}
  .section-tight{padding:72px 0;}
  .bg-glass{
    background:linear-gradient(180deg,rgba(255,255,255,.032),rgba(255,255,255,.008));
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .bg-grid{position:relative;}
  .bg-grid::after{
    content:"";
    position:absolute;inset:0;
    pointer-events:none;
    background-image:
      repeating-linear-gradient(90deg, rgba(255,255,255,.05) 0 1px, transparent 1px 24px),
      repeating-linear-gradient(0deg, rgba(255,255,255,.05) 0 1px, transparent 1px 24px);
    opacity:.5;
    mask-image:linear-gradient(180deg,transparent,#000 30%,#000 70%,transparent);
    -webkit-mask-image:linear-gradient(180deg,transparent,#000 30%,#000 70%,transparent);
  }
  .sec-label{
    display:inline-flex;
    align-items:center;
    gap:9px;
    font-size:12px;
    font-weight:600;
    letter-spacing:.18em;
    color:var(--primary);
  }
  .sec-label::before{content:"";width:2px;height:13px;border-radius:2px;background:var(--primary);box-shadow:0 0 10px rgba(255,106,26,.9);}
  .sec-title{
    margin-top:12px;
    font-size:clamp(24px,2.6vw,36px);
    font-weight:700;
    line-height:1.3;
    letter-spacing:0;
    color:var(--text);
  }
  .sec-sub{margin-top:14px;font-size:15.5px;color:var(--text-2);max-width:720px;}
  .sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
  p.body{font-size:16.5px;line-height:1.85;color:#D8DFE7;}
  p.body + p.body{margin-top:18px;}
  .body-muted{color:var(--text-2);font-size:15px;line-height:1.8;}

  .text-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:14.5px;
    font-weight:600;
    color:var(--primary);
    border-bottom:1px dashed rgba(255,106,26,.55);
    padding-bottom:2px;
    transition:color .2s ease, border-color .2s ease;
  }
  .text-link i{transition:transform .2s ease-out;}
  .text-link:hover{border-bottom-style:solid;color:var(--primary-light);}
  .text-link:hover i{transform:translateX(3px);}

  .badge{
    display:inline-flex;
    align-items:center;
    gap:7px;
    font-size:12px;
    font-weight:600;
    letter-spacing:.06em;
    padding:5px 12px;
    border-radius:var(--pill);
    background:rgba(255,106,26,.12);
    color:var(--primary-light);
    border:1px solid rgba(255,106,26,.26);
  }
  .badge-accent{background:rgba(43,217,168,.12);color:var(--accent);border-color:rgba(43,217,168,.26);}

  /* ---------- 页头 ---------- */
  .page-head{
    position:relative;
    padding:clamp(44px,6vw,74px) 0 clamp(40px,5.4vw,66px);
    overflow:hidden;
    border-bottom:1px solid var(--line);
  }
  .page-head .head-bg{
    position:absolute;inset:0;z-index:0;
    background-image:
      linear-gradient(180deg,rgba(10,13,17,.86),rgba(10,13,17,.94) 55%,rgba(10,13,17,.99)),
      url('/assets/images/backpic/back-1.webp');
    background-size:cover;
    background-position:center;
  }
  .page-head .head-bg::after{
    content:"";
    position:absolute;inset:0;
    background-image:
      repeating-linear-gradient(90deg, rgba(255,255,255,.05) 0 1px, transparent 1px 22px),
      repeating-linear-gradient(0deg, rgba(255,255,255,.05) 0 1px, transparent 1px 22px);
    opacity:.6;
    mask-image:linear-gradient(180deg,#000,transparent 85%);
    -webkit-mask-image:linear-gradient(180deg,#000,transparent 85%);
  }
  .breadcrumb{
    display:flex;
    align-items:center;
    gap:10px;
    font-size:13px;
    color:var(--text-3);
    margin-bottom:20px;
    flex-wrap:wrap;
  }
  .breadcrumb a{color:var(--text-2);transition:color .2s ease;}
  .breadcrumb a:hover{color:var(--primary);}
  .breadcrumb .cur{color:var(--primary);font-weight:600;}
  .page-head h1{
    margin-top:16px;
    font-size:clamp(26px,3.6vw,44px);
    font-weight:700;
    line-height:1.24;
    letter-spacing:0;
    color:#fff;
    max-width:20em;
  }
  .lede{
    margin-top:20px;
    max-width:760px;
    font-size:16.5px;
    line-height:1.85;
    color:var(--text-2);
  }
  .head-stats{
    display:flex;
    flex-wrap:wrap;
    margin-top:34px;
    border-top:1px solid var(--line);
    padding-top:24px;
  }
  .stat{
    padding:0 26px;
    border-left:1px solid var(--line-strong);
  }
  .stat:first-child{padding-left:0;border-left:0;}
  .stat b{
    display:block;
    font-family:var(--font-num);
    font-size:clamp(20px,2.4vw,27px);
    font-weight:700;
    color:var(--text);
    letter-spacing:-.01em;
    line-height:1.2;
  }
  .stat b .unit{font-size:12px;font-weight:500;color:var(--text-3);margin-left:4px;}
  .stat span{display:block;margin-top:5px;font-size:12.5px;color:var(--text-3);}

  /* ---------- 两栏内容 ---------- */
  .content-col h2{margin-top:12px;}
  .content-col h3{margin-top:32px;font-size:20px;font-weight:600;line-height:1.4;color:var(--text);}
  .content-col p.body{margin-top:20px;}
  .figure{margin-top:32px;}
  .figure .media{
    position:relative;
    border-radius:var(--r);
    overflow:hidden;
    border:1px solid var(--line-strong);
    background:linear-gradient(135deg,#161C24,#0D1218);
    aspect-ratio:16/9;
  }
  .figure .media img{width:100%;height:100%;object-fit:cover;}
  .figure figcaption{margin-top:12px;font-size:13px;color:var(--text-3);text-align:center;}
  .point-list{margin-top:26px;display:grid;gap:12px;}
  .point-list li{
    display:flex;
    gap:12px;
    align-items:flex-start;
    padding:14px 18px;
    border-radius:var(--r);
    border:1px solid var(--line);
    background:var(--bg-2);
    font-size:15.5px;
    color:#D8DFE7;
    transition:border-color .2s ease, transform .2s ease-out, box-shadow .2s ease-out;
  }
  .point-list li:hover{border-color:rgba(255,106,26,.35);transform:translateY(-3px);box-shadow:var(--glow);}
  .point-list i{color:var(--accent);margin-top:5px;font-size:14px;}

  .spec-card{
    position:relative;
    border-radius:var(--r-lg);
    border:1px solid var(--line-strong);
    background:var(--glass);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
    padding:26px 24px;
  }
  .spec-card::before{
    content:"";
    position:absolute;
    inset:0;
    border-radius:var(--r-lg);
    pointer-events:none;
    background:linear-gradient(135deg,rgba(255,106,26,.14),transparent 42%);
    opacity:.55;
  }
  .spec-title{
    font-size:13px;
    font-weight:600;
    letter-spacing:.08em;
    color:var(--primary);
    margin-bottom:6px;
    position:relative;
  }
  .spec-note{font-size:13px;color:var(--text-3);margin-bottom:12px;position:relative;}
  .spec-row{
    position:relative;
    display:flex;
    align-items:flex-start;
    justify-content:space-between;
    gap:18px;
    padding:13px 0;
    border-bottom:1px solid var(--line);
    font-size:14.5px;
  }
  .spec-row:last-of-type{border-bottom:0;}
  .spec-row span{color:var(--text-3);flex:0 0 auto;}
  .spec-row b{color:var(--text);font-weight:600;text-align:right;line-height:1.6;}
  .spec-card .btn{margin-top:22px;position:relative;}

  /* ---------- 场景矩阵 ---------- */
  .scene-card{
    position:relative;
    display:flex;
    flex-direction:column;
    border-radius:var(--r-lg);
    border:1px solid var(--line);
    background:var(--bg-2);
    padding:26px;
    height:100%;
    overflow:hidden;
    transition:transform .22s ease-out, border-color .22s ease-out, box-shadow .22s ease-out;
  }
  .scene-card:hover{transform:translateY(-4px);border-color:rgba(255,106,26,.35);box-shadow:var(--glow);}
  .scene-card h3{margin-top:16px;font-size:19px;font-weight:600;line-height:1.45;color:var(--text);}
  .scene-card p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--text-2);}
  .scene-card .media{
    margin-top:22px;
    border-radius:var(--r);
    overflow:hidden;
    border:1px solid var(--line);
    aspect-ratio:16/9;
    background:linear-gradient(135deg,#161C24,#0D1218);
  }
  .scene-card .media img{width:100%;height:100%;object-fit:cover;}
  .scene-index{
    font-family:var(--font-num);
    font-size:12.5px;
    letter-spacing:.1em;
    color:var(--primary);
  }
  .scene-card-wide{background:linear-gradient(150deg,rgba(255,106,26,.07),rgba(255,255,255,.02) 46%,var(--bg-2));}

  /* ---------- 时间轴 ---------- */
  .timeline{
    position:relative;
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:26px;
    margin-top:44px;
  }
  .timeline::before{
    content:"";
    position:absolute;
    top:7px;left:0;right:0;
    height:1px;
    background:linear-gradient(90deg,transparent,rgba(255,255,255,.16) 8%,rgba(255,255,255,.16) 92%,transparent);
  }
  .tl-item{position:relative;padding-top:34px;}
  .tl-item::before{
    content:"";
    position:absolute;
    top:0;left:0;
    width:15px;height:15px;
    border-radius:50%;
    background:#0A0D11;
    border:2px solid var(--primary);
    box-shadow:0 0 0 4px rgba(255,106,26,.12);
  }
  .tl-time{
    font-family:var(--font-num);
    font-size:12.5px;
    letter-spacing:.06em;
    color:var(--accent);
  }
  .tl-item h3{margin-top:10px;font-size:18px;font-weight:600;color:var(--text);line-height:1.45;}
  .tl-item p{margin-top:10px;font-size:14.6px;line-height:1.8;color:var(--text-2);}

  /* ---------- 推荐链接 ---------- */
  .rec-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
  .rec-item{
    display:flex;
    align-items:flex-start;
    gap:16px;
    padding:20px 22px;
    border-radius:var(--r);
    border:1px solid var(--line);
    background:var(--bg-2);
    transition:transform .22s ease-out, border-color .22s ease-out, box-shadow .22s ease-out, background-color .22s ease-out;
  }
  .rec-item:hover{
    transform:translateY(-4px);
    border-color:rgba(255,106,26,.35);
    box-shadow:var(--glow);
    background:#11171E;
  }
  .rec-num{
    flex:0 0 auto;
    font-family:var(--font-num);
    font-size:13px;
    font-weight:700;
    color:var(--primary);
    padding-top:3px;
    letter-spacing:.04em;
  }
  .rec-body{flex:1 1 auto;min-width:0;}
  .rec-body h3{font-size:16.5px;font-weight:600;color:var(--text);}
  .rec-body p{margin-top:7px;font-size:14px;line-height:1.7;color:var(--text-2);}
  .rec-arrow{color:var(--text-3);padding-top:3px;transition:color .2s ease, transform .2s ease-out;}
  .rec-item:hover .rec-arrow{color:var(--primary);transform:translateX(3px);}

  /* ---------- FAQ ---------- */
  .faq-wrap{max-width:900px;}
  .faq-item{
    border:1px solid var(--line);
    border-radius:var(--r);
    background:rgba(255,255,255,.03);
    overflow:hidden;
    transition:border-color .2s ease, background-color .2s ease;
  }
  .faq-item + .faq-item{margin-top:13px;}
  .faq-item.is-open{border-color:rgba(255,106,26,.4);background:rgba(255,106,26,.045);}
  .faq-q{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    width:100%;
    min-height:62px;
    padding:0 22px;
    font-size:16px;
    font-weight:600;
    text-align:left;
    color:var(--text);
    transition:color .2s ease;
  }
  .faq-q:hover{color:var(--primary-light);}
  .faq-icon{
    flex:0 0 auto;
    color:var(--primary);
    font-size:15px;
    transition:transform .25s ease-out;
  }
  .faq-item.is-open .faq-icon{transform:rotate(45deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease-out;}
  .faq-a p{padding:0 22px 22px;font-size:15.5px;line-height:1.8;color:var(--text-2);}

  /* ---------- CTA 条 ---------- */
  .cta-band{
    position:relative;
    overflow:hidden;
    border-top:1px solid var(--line-strong);
    border-bottom:1px solid var(--line-strong);
    background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02));
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
  }
  .cta-band::before,.cta-band::after{
    content:"";
    position:absolute;
    width:420px;height:420px;
    border-radius:50%;
    pointer-events:none;
    filter:blur(10px);
  }
  .cta-band::before{left:-160px;top:-180px;background:radial-gradient(circle,rgba(255,106,26,.18),transparent 68%);}
  .cta-band::after{right:-180px;bottom:-200px;background:radial-gradient(circle,rgba(43,217,168,.14),transparent 68%);}
  .cta-inner{
    position:relative;
    z-index:1;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:34px;
    padding:52px 0;
    flex-wrap:wrap;
  }
  .cta-inner h2{font-size:clamp(22px,2.4vw,32px);font-weight:700;line-height:1.35;color:var(--text);}
  .cta-inner p{margin-top:12px;font-size:15.5px;color:var(--text-2);max-width:640px;}
  .cta-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap;}

  /* ---------- 页脚 ---------- */
  .site-footer{
    position:relative;
    border-top:1px solid transparent;
    background:linear-gradient(180deg,rgba(255,255,255,.02),transparent 30%),var(--bg-0);
  }
  .site-footer::before{
    content:"";
    position:absolute;
    top:-1px;left:0;right:0;
    height:1px;
    background:linear-gradient(90deg,transparent,rgba(255,106,26,.55) 25%,rgba(255,106,26,.55) 75%,transparent);
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr 1.25fr;
    gap:40px;
    padding:64px 0 44px;
  }
  .footer-brand .brand{padding:0;justify-self:start;}
  .footer-desc{margin-top:18px;font-size:14.5px;line-height:1.85;color:var(--text-2);max-width:340px;}
  .footer-title{font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--primary);margin-bottom:16px;}
  .footer-links a{
    display:block;
    font-size:14px;
    color:var(--text-2);
    padding:6px 0;
    transition:color .2s ease, transform .2s ease-out;
  }
  .footer-links a:hover{color:var(--primary);transform:translateX(-2px);}
  .footer-info li{
    display:flex;
    gap:10px;
    align-items:flex-start;
    font-size:14px;
    color:var(--text-2);
    padding:6px 0;
    line-height:1.7;
  }
  .footer-info i{color:var(--accent);margin-top:5px;font-size:13px;}
  .footer-bottom{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    flex-wrap:wrap;
    padding:20px 0 26px;
    border-top:1px solid var(--line);
    font-size:13px;
    color:var(--text-3);
  }
  .to-top{display:inline-flex;align-items:center;gap:8px;color:var(--text-2);transition:color .2s ease;}
  .to-top:hover{color:var(--primary);}

  /* ---------- 滚动进场 ---------- */
  .reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease-out, transform .6s ease-out;}
  .reveal.is-in{opacity:1;transform:none;}

  /* ---------- 响应式 ---------- */
  @media (max-width:1023px){
    :root{--header-h:64px;}
    .shell{padding-left:24px;padding-right:24px;}
    .nav-left{display:none;}
    .menu-toggle{display:inline-flex;}
    .nav-cta{display:none;}
    .nav-cta-icon{display:inline-flex;}
    .section{padding:72px 0;}
    .section-tight{padding:56px 0;}
    .brand{padding:0 12px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 36px;}
    .timeline{grid-template-columns:repeat(2,1fr);}
    .timeline::before{display:none;}
    .tl-item{padding-top:26px;}
    .rec-list{grid-template-columns:1fr;}
    .head-stats{margin-top:28px;}
  }
  @media (max-width:767px){
    body{font-size:16px;}
    .shell{padding-left:16px;padding-right:16px;}
    .section{padding:48px 0;}
    .section-tight{padding:44px 0;}
    .brand-text{font-size:15.5px;}
    .brand-mark{font-size:15px;padding:4px 8px;}
    .brand{padding:0 6px;}
    .head-stats{display:grid;grid-template-columns:1fr 1fr;gap:18px 0;padding-top:20px;}
    .stat{padding:0 16px;border-left:1px solid var(--line-strong);}
    .stat:nth-child(odd){padding-left:0;border-left:0;}
    .stat:nth-child(3){padding-left:0;border-left:0;}
    .timeline{grid-template-columns:1fr;}
    .cta-inner{padding:40px 0;flex-direction:column;align-items:flex-start;}
    .cta-actions{width:100%;}
    .cta-actions .btn{width:100%;}
    .footer-grid{grid-template-columns:1fr;gap:30px;padding:44px 0 30px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
    .spec-card{padding:22px 18px;}
    .spec-row{flex-direction:column;gap:4px;}
    .spec-row b{text-align:left;}
  }
  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto;}
    .reveal{opacity:1;transform:none;transition:none;}
    *{transition-duration:.01ms !important;}
  }

.reveal{opacity:1;transform:none}.faq-a{max-height:none !important;overflow:visible}

/* roulang page: category2 */
:root{
  --bg-1:#0A0D11;
  --bg-2:#121820;
  --primary:#FF6A1A;
  --primary-deep:#C94F08;
  --primary-light:#FF8A47;
  --accent:#2BD9A8;
  --accent-dim:#1B8F72;
  --text:#E6EAEF;
  --text-2:#A3ADB8;
  --text-3:#6E7883;
  --line:rgba(255,255,255,0.08);
  --edge:rgba(255,255,255,0.14);
  --glass:rgba(255,255,255,0.045);
  --solid:#0F141A;
  --radius:16px;
  --radius-lg:20px;
  --shadow-glow:0 24px 56px -24px rgba(255,106,26,0.40);
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","DIN Alternate",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:linear-gradient(180deg,var(--bg-1) 0%,var(--bg-2) 100%);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
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;}
p{margin:0;}
h1,h2,h3{margin:0;font-weight:700;line-height:1.3;}
::selection{background:rgba(255,106,26,0.32);color:#fff;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#0B0F14;}
::-webkit-scrollbar-thumb{background:rgba(255,106,26,0.42);border-radius:999px;border:2px solid #0B0F14;}
::-webkit-scrollbar-thumb:hover{background:rgba(255,138,71,0.7);}

.shell{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
@media (max-width:1023px){.shell{padding:0 24px;}}
@media (max-width:767px){.shell{padding:0 16px;}}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  border-bottom:1px solid transparent;
  background:transparent;
  transition:background-color .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out,backdrop-filter .2s ease-out;
}
.site-header::before{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent 0%,rgba(255,106,26,0.55) 50%,transparent 100%);
  opacity:.6;transition:opacity .2s ease-out;
}
.site-header.is-scrolled{
  background:rgba(10,13,17,0.74);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-bottom-color:rgba(255,255,255,0.10);
  box-shadow:0 14px 40px -26px rgba(0,0,0,0.95);
}
.site-header.is-scrolled::before{opacity:1;}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  height:74px;gap:24px;position:relative;
}
.nav-left{display:flex;align-items:center;gap:26px;justify-self:start;}
.nav-right{display:flex;align-items:center;gap:20px;justify-self:end;}
.nav-link{
  position:relative;font-size:15px;color:var(--text-2);padding:6px 2px;
  transition:color .2s ease-out;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;border-radius:2px;
  background:var(--primary);transition:left .22s ease-out,right .22s ease-out;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{left:0;right:0;}
.nav-link.is-active{color:var(--primary);font-weight:600;}
.nav-link.is-active::after{left:0;right:0;}
.nav-link:focus-visible{outline:2px solid var(--accent);outline-offset:4px;border-radius:4px;}

.brand{display:inline-flex;align-items:baseline;gap:8px;justify-self:center;padding:0 24px;transition:opacity .2s ease-out;}
.brand:hover{opacity:.88;}
.brand:focus-visible{outline:2px solid var(--accent);outline-offset:4px;border-radius:8px;}
.brand-mark{
  font-family:var(--font-num);font-weight:800;font-size:21px;letter-spacing:.01em;
  background:linear-gradient(135deg,#FF8A47 0%,#FF6A1A 58%,#C94F08 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.brand-text{font-size:16px;font-weight:600;letter-spacing:.02em;color:var(--text);}
.brand-text em{font-style:normal;color:var(--primary);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;padding:12px 24px;white-space:nowrap;
  transition:transform .2s ease-out,background-color .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out,color .2s ease-out;
}
.btn-primary{
  background:var(--primary);color:#1A0A02;
  box-shadow:0 10px 30px -14px rgba(255,106,26,0.75);
}
.btn-primary:hover{background:var(--primary-light);transform:translateY(-1px);box-shadow:0 18px 42px -14px rgba(255,138,71,0.78);}
.btn-primary:active{background:var(--primary-deep);transform:translateY(1px);box-shadow:0 6px 16px -10px rgba(255,106,26,0.7);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,0.16);color:var(--text);}
.btn-ghost:hover{border-color:var(--primary);background:rgba(255,106,26,0.07);transform:translateY(-1px);color:#fff;}
.btn-ghost:active{transform:translateY(1px);background:rgba(255,106,26,0.12);}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.btn-sm{padding:9px 18px;font-size:14px;}

.menu-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,0.04);color:var(--text);
  transition:border-color .2s ease-out,background-color .2s ease-out;
}
.menu-toggle:hover{border-color:var(--primary);background:rgba(255,106,26,0.10);}
.menu-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

.drawer{
  display:none;position:fixed;top:74px;left:0;right:0;z-index:79;
  background:#0B0F14;
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  border-bottom:1px solid var(--edge);
  box-shadow:0 30px 60px -30px rgba(0,0,0,0.95);
  padding:12px 16px 22px;
}
.drawer.is-open{display:block;}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  font-size:16px;line-height:52px;color:var(--text-2);
  border-bottom:1px solid var(--line);
  transition:color .18s ease-out,padding-left .18s ease-out;
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--primary);padding-left:6px;}
.drawer-cta{width:100%;margin-top:18px;}
.drawer-foot{margin-top:14px;font-size:13px;color:var(--text-3);}

@media (max-width:767px){
  .nav-left,.nav-right .nav-link{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-inner{grid-template-columns:44px 1fr auto;height:66px;gap:12px;}
  .drawer{top:66px;}
  .brand{padding:0 8px;}
  .brand-mark{font-size:19px;}
  .brand-text{font-size:15px;}
  .nav-right .btn{padding:9px 16px;font-size:13.5px;}
}

/* ============ 通栏 banner ============ */
.page-banner{
  position:relative;overflow:hidden;
  padding:158px 0 72px;
  min-height:360px;display:flex;align-items:center;
}
.page-banner-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  transform:scale(1.02);
}
.page-banner-bg::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(120% 90% at 12% 8%,rgba(255,106,26,0.16) 0%,transparent 58%),
    linear-gradient(180deg,rgba(10,13,17,0.86) 0%,rgba(10,13,17,0.90) 52%,#0A0D11 100%);
}
.page-banner-grid{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,0.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,0.05) 1px,transparent 1px);
  background-size:24px 24px;opacity:.32;
}
.page-banner .shell{position:relative;z-index:2;}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px;}
.crumbs a{color:var(--text-2);transition:color .18s ease-out;}
.crumbs a:hover{color:var(--primary);}
.crumbs span.sep{color:var(--text-3);}
.crumbs span.current{color:var(--primary);}
.page-banner h1{
  font-size:clamp(30px,4.2vw,52px);font-weight:700;line-height:1.2;
  max-width:820px;letter-spacing:0;
}
.page-banner h1 em{font-style:normal;color:var(--primary);}
.banner-sub{
  margin-top:20px;max-width:660px;font-size:17px;color:var(--text-2);line-height:1.85;
}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;letter-spacing:.06em;
  color:var(--primary);background:rgba(255,106,26,0.12);
  border:1px solid rgba(255,106,26,0.22);
  padding:6px 14px;border-radius:999px;
}
.tag--accent{color:var(--accent);background:rgba(43,217,168,0.10);border-color:rgba(43,217,168,0.22);}
@media (max-width:767px){
  .page-banner{padding:120px 0 52px;min-height:320px;}
  .banner-sub{font-size:16px;}
}

/* ============ 板块 ============ */
.section{position:relative;padding:96px 0;}
.section--base{background:transparent;}
.section--glass{background:rgba(255,255,255,0.018);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section--grid::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,0.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,0.05) 1px,transparent 1px);
  background-size:32px 32px;opacity:.28;
}
.section > .shell{position:relative;z-index:2;}
@media (max-width:1023px){.section{padding:72px 0;}}
@media (max-width:767px){.section{padding:48px 0;}}

.sec-head{max-width:760px;margin-bottom:44px;}
.sec-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--primary);background:rgba(255,106,26,0.12);
  border-radius:999px;padding:6px 14px;
}
.sec-tag i{font-size:11px;}
.sec-title{font-size:clamp(24px,2.6vw,36px);font-weight:700;line-height:1.3;margin-top:16px;}
.sec-desc{margin-top:16px;font-size:16px;color:var(--text-2);line-height:1.85;}

/* ============ 卡片 ============ */
.card{
  position:relative;border-radius:var(--radius-lg);
  border:1px solid rgba(255,255,255,0.10);
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.08);
  transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
  overflow:hidden;
}
.card:hover{
  transform:translateY(-4px);
  border-color:rgba(255,106,26,0.35);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.08),var(--shadow-glow);
}
.card--solid{
  background:var(--solid);
  -webkit-backdrop-filter:none;backdrop-filter:none;
  border-color:var(--line);
}
.card-body{padding:26px;}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,#141A22,#0C1116);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease-out;}
.card:hover .card-media img{transform:scale(1.04);}
.card-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(10,13,17,0.72) 100%);
}
.card h3{font-size:20px;font-weight:600;line-height:1.45;}
.card p{font-size:15.5px;color:var(--text-2);line-height:1.82;margin-top:12px;}
.card-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.card-list li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2);line-height:1.7;}
.card-list li i{color:var(--accent);font-size:13px;margin-top:5px;flex:0 0 auto;}
.card-index{
  font-family:var(--font-num);font-size:12px;font-weight:700;letter-spacing:.08em;
  color:var(--accent);
}
.card-icon{
  width:44px;height:44px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,106,26,0.12);border:1px solid rgba(255,106,26,0.24);
  color:var(--primary);font-size:18px;
}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--primary);
  border-bottom:1px dashed rgba(255,106,26,0.55);
  padding-bottom:3px;margin-top:20px;
  transition:color .2s ease-out,border-color .2s ease-out;
}
.link-arrow i{transition:transform .2s ease-out;}
.link-arrow:hover{color:var(--primary-light);border-bottom-style:solid;border-bottom-color:var(--primary-light);}
.link-arrow:hover i{transform:translateX(3px);}
.link-arrow:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}

/* ============ 标签胶囊条 ============ */
.chipbar{
  display:flex;gap:12px;overflow-x:auto;padding:4px 2px 14px;
  scrollbar-width:thin;scrollbar-color:rgba(255,106,26,0.5) transparent;
  -webkit-overflow-scrolling:touch;
}
.chipbar::-webkit-scrollbar{height:6px;}
.chipbar::-webkit-scrollbar-thumb{background:rgba(255,106,26,0.45);border-radius:999px;border:0;}
.chip{
  flex:0 0 auto;padding:10px 20px;border-radius:999px;font-size:14px;
  border:1px solid rgba(255,255,255,0.14);
  background:rgba(255,255,255,0.04);color:var(--text-2);
  transition:background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out,transform .2s ease-out;
}
.chip:hover{color:var(--text);border-color:rgba(255,106,26,0.45);transform:translateY(-1px);}
.chip.is-active{background:var(--primary);border-color:var(--primary);color:#1A0A02;font-weight:600;}
.chip:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.chip-panel{
  display:none;border-radius:var(--radius-lg);border:1px solid var(--line);
  background:var(--solid);padding:26px 28px;font-size:16px;color:var(--text-2);line-height:1.9;
}
.chip-panel.is-active{display:block;animation:fadeUp .28s ease-out;}
.chip-panel strong{color:var(--text);font-weight:600;}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:none;}}

/* ============ 对比区 ============ */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-panel{
  border-radius:var(--radius-lg);border:1px solid var(--line);
  background:var(--solid);padding:30px;
}
.compare-panel h3{font-size:20px;font-weight:600;display:flex;align-items:center;gap:10px;}
.compare-panel h3 i{font-size:16px;color:var(--text-3);}
.compare-panel ol{margin-top:20px;display:flex;flex-direction:column;gap:14px;}
.compare-panel li{
  display:flex;gap:12px;font-size:15px;color:var(--text-2);line-height:1.75;
  padding-bottom:14px;border-bottom:1px dashed var(--line);
}
.compare-panel li:last-child{border-bottom:0;padding-bottom:0;}
.compare-panel li span.dot{
  flex:0 0 auto;width:6px;height:6px;border-radius:2px;margin-top:10px;
  background:var(--text-3);
}
.compare-panel--now{
  border-color:rgba(255,106,26,0.45);
  background:linear-gradient(180deg,rgba(255,106,26,0.09) 0%,rgba(255,255,255,0.02) 100%);
  box-shadow:0 0 0 1px rgba(255,106,26,0.12),0 28px 64px -34px rgba(255,106,26,0.6);
}
.compare-panel--now h3 i{color:var(--primary);}
.compare-panel--now li span.dot{background:var(--accent);}
.compare-panel--now li{color:var(--text);}
@media (max-width:860px){.compare{grid-template-columns:1fr;}}

/* ============ 推荐链接列表 ============ */
.linkgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
.linkitem{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;border-radius:var(--radius);
  border:1px solid var(--line);background:var(--solid);
  transition:border-color .2s ease-out,transform .2s ease-out,background-color .2s ease-out;
}
.linkitem:hover{border-color:rgba(255,106,26,0.4);background:#121922;transform:translateY(-3px);}
.linkitem:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.linkitem .li-title{font-size:15.5px;font-weight:600;color:var(--text);}
.linkitem .li-sub{font-size:13px;color:var(--text-3);margin-top:6px;}
.linkitem i{color:var(--primary);font-size:14px;flex:0 0 auto;transition:transform .2s ease-out;}
.linkitem:hover i{transform:translateX(4px);}
@media (max-width:860px){.linkgrid{grid-template-columns:1fr;}}

/* ============ FAQ ============ */
.faq-list{display:grid;grid-template-columns:1fr;gap:14px;max-width:940px;}
.faq-item{border:1px solid var(--line);border-radius:var(--radius);background:var(--solid);overflow:hidden;transition:border-color .22s ease-out;}
.faq-item.is-open{border-color:rgba(255,106,26,0.38);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:14px 24px;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);
  transition:color .2s ease-out;
}
.faq-q:hover{color:var(--primary-light);}
.faq-q:focus-visible{outline:2px solid var(--accent);outline-offset:-2px;}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;position:relative;
  transition:transform .26s ease-out;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
}
.faq-icon::before{left:50%;top:4px;bottom:4px;width:1.5px;transform:translateX(-50%);}
.faq-icon::after{top:50%;left:4px;right:4px;height:1.5px;transform:translateY(-50%);}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease-out;}
.faq-a p{padding:0 24px 22px;font-size:15.5px;color:var(--text-2);line-height:1.85;}
.faq-item.is-open .faq-a{max-height:360px;}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:24px;
  border:1px solid rgba(255,255,255,0.10);
  background:rgba(255,255,255,0.05);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.08);
  padding:44px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
}
.cta-band::before,.cta-band::after{
  content:"";position:absolute;width:320px;height:320px;border-radius:50%;pointer-events:none;
}
.cta-band::before{left:-120px;top:-80px;background:radial-gradient(circle,rgba(255,106,26,0.18) 0%,transparent 68%);}
.cta-band::after{right:-120px;bottom:-120px;background:radial-gradient(circle,rgba(43,217,168,0.14) 0%,transparent 68%);}
.cta-band h2{font-size:clamp(22px,2.2vw,30px);font-weight:700;line-height:1.35;}
.cta-band p{margin-top:12px;font-size:15.5px;color:var(--text-2);max-width:600px;}
.cta-actions{display:flex;align-items:center;gap:20px;flex:0 0 auto;position:relative;z-index:2;}
.cta-band .shell-inner{position:relative;z-index:2;}
@media (max-width:860px){
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px 26px;}
  .cta-actions{flex-wrap:wrap;}
}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;margin-top:24px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,0.02) 0%,rgba(10,13,17,0.9) 100%);
  padding:72px 0 28px;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent 0%,rgba(255,106,26,0.6) 50%,transparent 100%);
}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .brand{justify-self:flex-start;padding:0;margin-bottom:18px;display:inline-flex;}
.footer-desc{font-size:14px;color:var(--text-2);line-height:1.85;max-width:330px;}
.footer-title{
  font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--primary);
  margin-bottom:18px;text-transform:none;
}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14px;color:var(--text-2);transition:color .18s ease-out,transform .18s ease-out;display:inline-block;}
.footer-links a:hover{color:var(--primary);transform:translateX(-2px);}
.footer-links a:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}
.footer-info{display:flex;flex-direction:column;gap:14px;}
.footer-info li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7;}
.footer-info li i{color:var(--primary);font-size:13px;margin-top:5px;flex:0 0 auto;}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);
}
.to-top{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;color:var(--text-2);
  transition:color .18s ease-out;
}
.to-top:hover{color:var(--primary);}
.to-top i{transition:transform .2s ease-out;}
.to-top:hover i{transform:translateY(-3px);}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:34px;}}
@media (max-width:640px){
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .site-footer{padding:52px 0 24px;}
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .55s ease-out,transform .55s ease-out;}
.reveal.is-visible{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}