/* roulang page: index */
:root{
  --bg-page:#050A14;
  --bg-deep:#0B1424;
  --bg-card:rgba(255,255,255,0.045);
  --bg-glass:rgba(255,255,255,0.04);
  --bg-solid:rgba(10,18,30,0.6);
  --border-card:rgba(255,255,255,0.12);
  --border-light:rgba(148,168,195,0.18);
  --primary:#0EA5E9;
  --primary-deep:#2563EB;
  --energy:#00E59A;
  --cyan:#22D3EE;
  --text-main:#E8F0F8;
  --text-sub:#94A8C3;
  --text-weak:#5B6D88;
  --radius-lg:18px;
  --radius-md:12px;
  --radius-sm:8px;
  --radius-full:999px;
  --shadow-card:0 12px 40px rgba(0,0,0,0.35);
  --shadow-btn:0 0 20px rgba(0,229,154,0.30);
  --font:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","HarmonyOS Sans SC","Noto Sans SC","Segoe UI",sans-serif;
}
*{
  margin:0;padding:0;box-sizing:border-box;
}
html{
  scroll-behavior:smooth;
}
body{
  font-family:var(--font);
  background:linear-gradient(135deg,#050A14 0%,#0B1424 45%,#081020 100%);
  color:var(--text-main);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
}
a{
  color:inherit;text-decoration:none;
  transition:color 0.25s ease;
}
img{
  max-width:100%;display:block;
}
button,input{
  font-family:inherit;font-size:inherit;outline:none;border:none;
}
/* ====== layout ====== */
.site-layout{
  display:flex;
  min-height:100vh;
}
.sidebar{
  width:248px;
  position:fixed;
  top:0;left:0;bottom:0;
  background:rgba(8,15,30,0.75);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-right:1px solid var(--border-light);
  display:flex;
  flex-direction:column;
  padding:28px 20px 24px;
  z-index:100;
  overflow-y:auto;
}
.content-wrap{
  margin-left:248px;
  width:calc(100% - 248px);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.main-container{
  flex:1;
  padding:0 56px;
  max-width:1240px;
  width:100%;
  margin:0 auto;
}
/* ====== sidebar brand ====== */
.side-brand{
  display:flex;
  align-items:center;
  gap:12px;
  padding:6px 0 28px;
  border-bottom:1px solid var(--border-light);
  margin-bottom:24px;
}
.brand-logo{
  width:44px;height:44px;
  border-radius:50%;
  background:linear-gradient(135deg,rgba(0,229,154,0.16),rgba(14,165,233,0.18));
  border:1px solid rgba(34,211,238,0.45);
  display:flex;align-items:center;justify-content:center;
  color:var(--energy);
  font-size:19px;
  position:relative;
  flex-shrink:0;
}
.brand-logo::after{
  content:'';
  position:absolute;
  width:10px;height:10px;
  background:radial-gradient(circle,var(--cyan),rgba(34,211,238,0));
  border-radius:50%;
  bottom:-1px;right:-1px;
  z-index:2;
}
.brand-logo .logo-dot{
  position:absolute;
  width:14px;height:8px;
  border-bottom:2px solid var(--cyan);
  border-left:2px solid var(--cyan);
  border-radius:0 0 0 8px;
  bottom:-5px;left:8px;
  opacity:0.55;
}
.brand-text{
  display:flex;flex-direction:column;line-height:1.25;
}
.brand-name{
  font-size:17px;font-weight:700;color:var(--text-main);letter-spacing:0.2px;
}
.brand-en{
  font-size:11px;color:var(--text-weak);letter-spacing:1.5px;text-transform:uppercase;font-weight:500;
}
/* ====== sidebar nav ====== */
.side-nav{
  display:flex;flex-direction:column;gap:6px;
  flex:1;
}
.nav-item{
  display:flex;align-items:center;gap:12px;
  padding:13px 14px;
  border-radius:14px;
  color:var(--text-sub);
  font-size:15px;font-weight:500;
  position:relative;
  transition:background 0.25s ease,color 0.25s ease,transform 0.2s ease;
}
.nav-item i{
  width:20px;text-align:center;font-size:16px;
}
.nav-item:hover{
  background:rgba(14,165,233,0.08);
  color:var(--text-main);
}
.nav-item.active{
  background:rgba(14,165,233,0.10);
  color:#fff;
  font-weight:600;
}
.nav-item.active::before{
  content:'';
  position:absolute;
  left:-14px;top:50%;
  transform:translateY(-50%);
  width:3px;height:22px;
  background:var(--energy);
  border-radius:0 4px 4px 0;
}
/* sidebar cta */
.side-cta{
  margin-top:16px;
  padding-top:20px;
  border-top:1px solid var(--border-light);
  display:flex;flex-direction:column;gap:14px;
}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:linear-gradient(135deg,#00E59A,#22D3EE);
  color:#04130D;
  font-size:15px;font-weight:600;
  padding:14px 32px;
  border-radius:var(--radius-full);
  box-shadow:var(--shadow-btn);
  cursor:pointer;
  transition:all 0.3s ease;
  border:none;
  line-height:1.2;
}
.btn-primary:hover{
  filter:brightness(1.08);
  box-shadow:0 0 28px rgba(0,229,154,0.5);
  transform:translateY(-2px);
}
.btn-primary:active{
  transform:translateY(0);
  box-shadow:0 0 12px rgba(0,229,154,0.2);
}
.btn-primary:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
}
.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:rgba(255,255,255,0.04);
  border:1px solid rgba(34,211,238,0.4);
  color:var(--text-main);
  font-size:15px;font-weight:500;
  padding:14px 32px;
  border-radius:var(--radius-full);
  cursor:pointer;
  transition:all 0.3s ease;
}
.btn-secondary:hover{
  border-color:var(--cyan);
  background:rgba(34,211,238,0.08);
  transform:translateY(-2px);
}
.btn-secondary:active{
  transform:translateY(0);
  background:rgba(34,211,238,0.12);
}
.btn-secondary:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
}
.btn-small{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 20px;
  font-size:13px;font-weight:500;
  border-radius:var(--radius-full);
  background:rgba(255,255,255,0.04);
  border:1px solid rgba(34,211,238,0.3);
  color:var(--text-sub);
  cursor:pointer;
  transition:all 0.25s ease;
}
.btn-small:hover{
  border-color:var(--cyan);
  color:#fff;
  background:rgba(34,211,238,0.08);
}
.side-contact{
  display:flex;flex-direction:column;gap:8px;
}
.side-contact a{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-sub);
  transition:color 0.2s ease;
}
.side-contact a:hover{
  color:var(--cyan);
}
.side-contact i{
  font-size:14px;width:16px;text-align:center;
}
/* ====== mobile header ====== */
.mobile-header{
  display:none;
  height:64px;
  background:#08101F;
  border-bottom:1px solid var(--border-light);
  align-items:center;
  justify-content:space-between;
  padding:0 20px;
  position:sticky;
  top:0;
  z-index:90;
}
.mobile-brand{
  display:flex;align-items:center;gap:8px;
  font-weight:600;font-size:16px;color:var(--text-main);
}
.mobile-brand i{
  color:var(--energy);font-size:18px;
}
.menu-btn{
  width:40px;height:40px;
  background:rgba(255,255,255,0.04);
  border-radius:10px;
  color:var(--text-main);
  font-size:17px;
  cursor:pointer;
  display:flex;align-items:center;justify-content:center;
}
.menu-btn:hover{
  background:rgba(255,255,255,0.08);
}
.mobile-cta{
  padding:9px 16px;
  font-size:13px;
  background:linear-gradient(135deg,#00E59A,#22D3EE);
  color:#04130D;
  border-radius:var(--radius-full);
  font-weight:600;
  cursor:pointer;
  transition:filter 0.2s;
}
.mobile-cta:hover{
  filter:brightness(1.1);
}
/* ====== mobile drawer ====== */
.mobile-drawer{
  position:fixed;
  top:0;left:0;right:0;bottom:0;
  background:rgba(10,18,34,0.95);
  backdrop-filter:blur(20px);
  z-index:200;
  padding:24px;
  display:flex;
  flex-direction:column;
  transform:translateX(-100%);
  transition:transform 0.35s cubic-bezier(0.77,0,0.175,1);
}
.mobile-drawer.open{
  transform:translateX(0);
}
.drawer-header{
  display:flex;align-items:center;justify-content:space-between;
  padding-bottom:20px;
  border-bottom:1px solid var(--border-light);
  margin-bottom:24px;
}
.drawer-brand{
  display:flex;align-items:center;gap:10px;
  font-size:18px;font-weight:700;
}
.drawer-brand i{
  color:var(--energy);
}
.drawer-close{
  width:38px;height:38px;
  background:rgba(255,255,255,0.05);
  border-radius:50%;
  color:var(--text-main);
  font-size:16px;
  cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:background 0.2s;
}
.drawer-close:hover{
  background:rgba(255,255,255,0.12);
}
.drawer-nav{
  display:flex;flex-direction:column;gap:6px;
  flex:1;
}
.drawer-nav a{
  padding:14px 16px;
  border-radius:14px;
  font-size:16px;
  color:var(--text-sub);
  display:flex;align-items:center;gap:12px;
  transition:all 0.2s ease;
}
.drawer-nav a i{
  width:20px;text-align:center;
}
.drawer-nav a.active{
  background:rgba(14,165,233,0.12);
  color:#fff;
}
.drawer-cta{
  padding:20px 0;
}
.drawer-contact{
  display:flex;gap:16px;
  padding-top:14px;
  border-top:1px solid var(--border-light);
}
.drawer-contact a{
  color:var(--text-sub);
  font-size:14px;
  display:flex;align-items:center;gap:6px;
}
.drawer-contact i{
  color:var(--cyan);
}
/* ====== hero ====== */
.hero-section{
  position:relative;
  min-height:78vh;
  display:flex;
  align-items:center;
  padding:80px 0 100px;
  overflow:hidden;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
}
.hero-section::before{
  content:'';
  position:absolute;
  top:0;left:0;right:0;bottom:0;
  background:linear-gradient(105deg,#050A14 16%,rgba(5,10,20,0.55) 44%,rgba(14,165,233,0.18) 100%);
  z-index:1;
}
.hero-section::after{
  content:'';
  position:absolute;
  top:0;left:0;right:0;bottom:0;
  background-image:
    linear-gradient(rgba(14,165,233,0.08) 1px,transparent 1px),
    linear-gradient(90deg,rgba(14,165,233,0.08) 1px,transparent 1px);
  background-size:44px 44px;
  opacity:0.4;
  z-index:1;
  pointer-events:none;
}
.hero-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.05fr 0.95fr;
  gap:48px;
  align-items:center;
  max-width:1240px;
  margin:0 auto;
  padding:0 56px;
  width:100%;
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 18px;
  background:rgba(255,255,255,0.06);
  border:1px solid rgba(34,211,238,0.35);
  border-radius:var(--radius-full);
  color:var(--cyan);
  font-size:13px;
  font-weight:500;
  margin-bottom:24px;
  letter-spacing:0.3px;
}
.hero-badge i{
  font-size:12px;
}
.hero-title{
  font-size:52px;
  font-weight:800;
  line-height:1.25;
  color:#fff;
  margin-bottom:20px;
  letter-spacing:-0.5px;
}
.hero-title .grad{
  background:linear-gradient(135deg,#00E59A,#22D3EE);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero-sub{
  font-size:17px;
  color:var(--text-sub);
  line-height:1.75;
  max-width:440px;
  margin-bottom:36px;
}
.hero-actions{
  display:flex;
  gap:16px;
  flex-wrap:wrap;
  margin-bottom:28px;
}
.hero-note{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-weak);
}
.hero-note i{
  color:var(--energy);
}
.hero-visual{
  position:relative;
}
.hero-visual-img{
  border-radius:22px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,0.14);
  box-shadow:0 24px 80px rgba(0,0,0,0.5);
  position:relative;
}
.hero-visual-img img{
  width:100%;
  height:320px;
  object-fit:cover;
  display:block;
}
.hero-visual-card{
  position:absolute;
  bottom:24px;
  left:-32px;
  background:rgba(10,18,30,0.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid rgba(34,211,238,0.3);
  border-radius:16px;
  padding:16px 20px;
  display:flex;
  align-items:center;
  gap:12px;
  box-shadow:var(--shadow-card);
}
.hero-visual-card .hvc-icon{
  width:36px;height:36px;
  border-radius:50%;
  background:rgba(0,229,154,0.12);
  border:1px solid rgba(0,229,154,0.3);
  display:flex;align-items:center;justify-content:center;
  color:var(--energy);font-size:14px;
}
.hero-visual-card .hvc-text{
  font-size:13px;color:var(--text-main);font-weight:500;
  line-height:1.4;
}
.hero-visual-card .hvc-text small{
  display:block;
  color:var(--text-weak);
  font-size:11px;
  font-weight:400;
}
/* ====== stats ====== */
.stats-section{
  padding:24px 56px 48px;
  max-width:1240px;
  margin:-48px auto 0;
  position:relative;
  z-index:10;
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  background:rgba(255,255,255,0.04);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--border-card);
  border-radius:var(--radius-lg);
  padding:32px 36px;
  box-shadow:var(--shadow-card);
}
.stat-item{
  text-align:center;
  padding:8px 12px;
}
.stat-num{
  font-size:36px;
  font-weight:800;
  color:var(--energy);
  line-height:1.2;
  letter-spacing:-0.5px;
}
.stat-label{
  font-size:13px;
  color:var(--text-weak);
  margin-top:6px;
  letter-spacing:0.5px;
}
/* ====== section common ====== */
.section-block{
  padding:88px 56px;
  max-width:1240px;
  margin:0 auto;
  width:100%;
}
.section-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:40px;
}
.section-title-wrap{
  display:flex;
  align-items:center;
  gap:12px;
}
.section-bar{
  width:4px;
  height:28px;
  background:var(--energy);
  border-radius:4px;
}
.section-title{
  font-size:30px;
  font-weight:800;
  color:var(--text-main);
  letter-spacing:-0.3px;
  line-height:1.3;
}
.section-link{
  font-size:14px;
  color:var(--text-sub);
  display:inline-flex;
  align-items:center;
  gap:6px;
  transition:color 0.2s;
}
.section-link:hover{
  color:var(--cyan);
}
.section-link i{
  font-size:12px;
  transition:transform 0.2s;
}
.section-link:hover i{
  transform:translateX(4px);
}
/* ====== story ====== */
.story-section{
  background:linear-gradient(to right,rgba(0,229,154,0.03),rgba(14,165,233,0.04));
  border-top:1px solid var(--border-light);
  border-bottom:1px solid var(--border-light);
}
.story-grid{
  display:grid;
  grid-template-columns:0.95fr 1.05fr;
  gap:72px;
  align-items:center;
}
.story-tag{
  font-size:13px;
  font-weight:600;
  color:var(--energy);
  letter-spacing:2px;
  text-transform:uppercase;
  margin-bottom:16px;
  display:flex;
  align-items:center;
  gap:8px;
}
.story-tag::before{
  content:'';
  width:24px;height:2px;
  background:var(--energy);
  border-radius:2px;
}
.story-title{
  font-size:32px;
  font-weight:800;
  color:var(--text-main);
  line-height:1.3;
  margin-bottom:20px;
  letter-spacing:-0.3px;
}
.story-text{
  color:var(--text-sub);
  font-size:15px;
  line-height:1.85;
  margin-bottom:24px;
}
.story-more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  transition:gap 0.25s,color 0.25s;
}
.story-more:hover{
  gap:12px;
  color:var(--cyan);
}
.story-visual{
  position:relative;
}
.story-visual-img{
  border-radius:22px;
  overflow:hidden;
  border:1px solid var(--border-card);
  box-shadow:var(--shadow-card);
}
.story-visual-img img{
  width:100%;
  height:420px;
  object-fit:cover;
}
.story-float-card{
  position:absolute;
  top:32px;
  right:-28px;
  background:rgba(10,18,30,0.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid rgba(34,211,238,0.28);
  border-radius:16px;
  padding:14px 18px;
  font-size:13px;
  color:var(--text-main);
  display:flex;align-items:center;gap:10px;
  box-shadow:var(--shadow-card);
}
.story-float-card i{
  color:var(--energy);
  font-size:18px;
}
/* ====== featured cards ====== */
.featured-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.feature-card{
  background:var(--bg-card);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border:1px solid var(--border-card);
  border-radius:18px;
  overflow:hidden;
  box-shadow:0 8px 28px rgba(0,0,0,0.28);
  transition:transform 0.3s ease,border-color 0.3s ease,box-shadow 0.3s ease;
  display:flex;
  flex-direction:column;
}
.feature-card:hover{
  transform:translateY(-4px);
  border-color:rgba(34,211,238,0.5);
  box-shadow:0 16px 48px rgba(0,0,0,0.4),0 0 0 1px rgba(34,211,238,0.08);
}
.feature-img{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/9;
}
.feature-img img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform 0.4s ease;
}
.feature-card:hover .feature-img img{
  transform:scale(1.04);
}
.feature-badge{
  position:absolute;
  top:12px;
  left:12px;
  padding:5px 12px;
  background:rgba(8,15,30,0.65);
  backdrop-filter:blur(8px);
  border:1px solid rgba(34,211,238,0.35);
  border-radius:var(--radius-full);
  color:var(--cyan);
  font-size:12px;
  font-weight:600;
  letter-spacing:0.3px;
}
.feature-body{
  padding:20px 22px 22px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.feature-title{
  font-size:18px;
  font-weight:700;
  color:var(--text-main);
  line-height:1.4;
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.feature-desc{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.6;
  margin-bottom:18px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  flex:1;
}
.feature-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  border-top:1px solid var(--border-light);
  padding-top:16px;
  font-size:13px;
  color:var(--text-weak);
}
.feature-meta a{
  color:var(--text-sub);
  font-weight:500;
  display:inline-flex;
  align-items:center;
  gap:4px;
  transition:color 0.2s;
}
.feature-meta a:hover{
  color:var(--cyan);
}
.feature-meta a i{
  font-size:11px;
  transition:transform 0.2s;
}
.feature-meta a:hover i{
  transform:translateX(3px);
}
/* ====== news section ====== */
.news-section{
  background:linear-gradient(to right,rgba(14,165,233,0.02),rgba(0,229,154,0.02));
  border-top:1px solid var(--border-light);
  border-bottom:1px solid var(--border-light);
}
.news-list{
  display:flex;
  flex-direction:column;
  border-radius:18px;
  background:var(--bg-card);
  border:1px solid var(--border-card);
  overflow:hidden;
}
.news-item{
  display:grid;
  grid-template-columns:64px 96px minmax(200px,1.2fr) minmax(220px,1.8fr) 24px;
  gap:16px;
  align-items:center;
  padding:20px 24px;
  border-bottom:1px dashed var(--border-light);
  transition:background 0.25s ease;
}
.news-item:last-child{
  border-bottom:none;
}
.news-item:hover{
  background:rgba(14,165,233,0.06);
}
.news-date{
  display:flex;
  flex-direction:column;
  align-items:center;
  padding:8px 0;
  border-radius:12px;
  background:rgba(14,165,233,0.06);
  border:1px solid rgba(34,211,238,0.18);
  line-height:1.2;
}
.date-day{
  font-size:22px;
  font-weight:800;
  color:var(--energy);
}
.date-month{
  font-size:11px;
  color:var(--text-sub);
  margin-top:2px;
  font-weight:500;
}
.news-cat{
  font-size:12px;
  font-weight:500;
  color:var(--cyan);
  background:rgba(14,165,233,0.08);
  border:1px solid rgba(34,211,238,0.18);
  padding:5px 12px;
  border-radius:var(--radius-full);
  justify-self:start;
  white-space:nowrap;
}
.news-title{
  font-size:16px;
  font-weight:600;
  color:var(--text-main);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
  transition:color 0.2s;
}
.news-item:hover .news-title{
  color:var(--cyan);
}
.news-desc{
  font-size:14px;
  color:var(--text-weak);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.news-arrow{
  color:var(--text-weak);
  font-size:14px;
  transition:transform 0.25s ease,color 0.2s;
}
.news-item:hover .news-arrow{
  transform:translateX(4px);
  color:var(--cyan);
}
/* empty state */
.news-empty{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  padding:80px 24px;
  gap:16px;
  text-align:center;
  background:var(--bg-card);
  border:1px solid var(--border-card);
  border-radius:18px;
}
.empty-icon{
  width:52px;
  height:52px;
  border-radius:50%;
  background:rgba(0,229,154,0.08);
  border:1px solid rgba(0,229,154,0.25);
  display:flex;align-items:center;justify-content:center;
  color:var(--energy);
  font-size:20px;
}
.news-empty p{
  color:var(--text-sub);
  font-size:15px;
}
/* ====== trust ====== */
.trust-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.trust-item{
  background:var(--bg-card);
  border:1px solid var(--border-card);
  border-radius:18px;
  padding:32px 24px;
  text-align:center;
  transition:border-color 0.3s,transform 0.3s;
}
.trust-item:hover{
  border-color:rgba(34,211,238,0.4);
  transform:translateY(-3px);
}
.trust-icon{
  width:48px;
  height:48px;
  margin:0 auto 16px;
  border-radius:14px;
  background:rgba(14,165,233,0.08);
  border:1px solid rgba(34,211,238,0.2);
  display:flex;align-items:center;justify-content:center;
  color:var(--cyan);
  font-size:20px;
}
.trust-num{
  font-size:28px;
  font-weight:800;
  color:#fff;
  line-height:1.2;
}
.trust-label{
  font-size:13px;
  color:var(--text-weak);
  margin-top:6px;
}
/* ====== subscribe ====== */
.subscribe-section{
  background:linear-gradient(135deg,rgba(0,229,154,0.05),rgba(14,165,233,0.06));
  border-top:1px solid var(--border-light);
  border-bottom:1px solid var(--border-light);
}
.subscribe-inner{
  max-width:820px;
  margin:0 auto;
  text-align:center;
  padding:80px 0;
}
.subscribe-inner h2{
  font-size:30px;
  font-weight:800;
  color:var(--text-main);
  margin-bottom:14px;
}
.subscribe-inner p{
  color:var(--text-sub);
  font-size:15px;
  margin-bottom:36px;
}
.subscribe-form{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:12px;
  flex-wrap:wrap;
}
.subscribe-form input{
  width:320px;
  max-width:100%;
  padding:14px 22px;
  background:rgba(255,255,255,0.04);
  border:1px solid rgba(255,255,255,0.14);
  border-radius:14px;
  color:var(--text-main);
  font-size:15px;
  transition:border-color 0.25s,box-shadow 0.25s;
}
.subscribe-form input::placeholder{
  color:var(--text-weak);
}
.subscribe-form input:focus{
  border-color:var(--cyan);
  box-shadow:0 0 0 3px rgba(34,211,238,0.12);
}
/* ====== faq ====== */
.faq-list{
  max-width:860px;
  margin:0 auto;
  display:flex;
  flex-direction:column;
  gap:16px;
}
.faq-item{
  background:var(--bg-card);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border:1px solid var(--border-card);
  border-radius:16px;
  overflow:hidden;
  transition:border-color 0.25s;
}
.faq-item:hover{
  border-color:rgba(34,211,238,0.3);
}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 24px;
  cursor:pointer;
  font-size:16px;
  font-weight:600;
  color:var(--text-main);
  list-style:none;
  transition:color 0.2s;
}
.faq-item summary::-webkit-details-marker{
  display:none;
}
.faq-item summary::after{
  content:'\f067';
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:14px;
  color:var(--cyan);
  width:28px;height:28px;
  border-radius:50%;
  background:rgba(14,165,233,0.1);
  border:1px solid rgba(34,211,238,0.2);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
  transition:all 0.3s ease;
}
.faq-item[open] summary::after{
  content:'\f068';
  background:rgba(0,229,154,0.15);
  border-color:rgba(0,229,154,0.3);
  color:var(--energy);
}
.faq-item[open] summary{
  color:#fff;
}
.faq-answer{
  padding:0 24px 20px;
  background:rgba(10,18,30,0.35);
  border-radius:0 0 12px 12px;
  color:var(--text-sub);
  font-size:14px;
  line-height:1.8;
}
/* ====== footer ====== */
.site-footer{
  border-top:1px solid var(--border-light);
  background:rgba(6,12,24,0.6);
  padding:60px 56px 28px;
  margin-top:auto;
}
.footer-grid{
  max-width:1240px;
  margin:0 auto;
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr;
  gap:48px;
  padding-bottom:36px;
}
.footer-brand h3{
  font-size:20px;
  font-weight:700;
  color:var(--text-main);
  margin-bottom:14px;
}
.footer-brand p{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.75;
  max-width:360px;
}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  color:var(--text-main);
  margin-bottom:16px;
}
.footer-col a{
  display:block;
  font-size:14px;
  color:var(--text-sub);
  padding:6px 0;
  transition:color 0.2s;
}
.footer-col a:hover{
  color:var(--cyan);
}
.footer-bottom{
  max-width:1240px;
  margin:0 auto;
  border-top:1px solid var(--border-light);
  padding-top:22px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
}
.footer-bottom p{
  font-size:13px;
  color:var(--text-weak);
}
/* ====== responsive ====== */
@media (max-width:1280px){
  .main-container,.section-block,.stats-section{
    padding-left:40px;
    padding-right:40px;
  }
  .hero-inner{
    padding-left:40px;
    padding-right:40px;
  }
  .site-footer{
    padding-left:40px;
    padding-right:40px;
  }
}
@media (max-width:1024px){
  .sidebar{
    display:none;
  }
  .content-wrap{
    margin-left:0;
    width:100%;
  }
  .mobile-header{
    display:flex;
  }
  .main-container,.section-block,.stats-section{
    padding-left:24px;
    padding-right:24px;
  }
  .hero-inner{
    padding-left:24px;
    padding-right:24px;
    grid-template-columns:1fr;
    gap:32px;
  }
  .hero-section{
    min-height:auto;
    padding:60px 0 70px;
  }
  .hero-visual{
    max-width:560px;
  }
  .stats-grid{
    padding:24px 20px;
    gap:16px;
  }
  .stat-num{
    font-size:30px;
  }
  .story-grid{
    grid-template-columns:1fr;
    gap:40px;
  }
  .featured-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .news-item{
    grid-template-columns:60px 84px minmax(160px,1fr) 20px;
    gap:14px;
  }
  .news-desc{
    display:none;
  }
  .trust-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .footer-grid{
    grid-template-columns:1fr 1fr;
  }
}
@media (max-width:768px){
  .hero-title{
    font-size:36px;
  }
  .hero-sub{
    font-size:15px;
  }
  .hero-actions .btn-primary,.hero-actions .btn-secondary{
    width:100%;
  }
  .section-block{
    padding:64px 20px;
  }
  .stats-section{
    padding:0 20px 40px;
    margin-top:-32px;
  }
  .stats-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .section-title{
    font-size:24px;
  }
  .featured-grid{
    grid-template-columns:1fr;
  }
  .news-item{
    grid-template-columns:52px 74px 20px;
    padding:16px;
    gap:10px;
  }
  .news-title{
    font-size:14px;
  }
  .news-desc{
    display:none;
  }
  .news-cat{
    font-size:11px;
    padding:4px 8px;
  }
  .date-day{
    font-size:18px;
  }
  .trust-grid{
    grid-template-columns:1fr;
  }
  .subscribe-inner h2{
    font-size:24px;
  }
  .subscribe-form input{
    width:100%;
  }
  .subscribe-form .btn-primary{
    width:100%;
  }
  .footer-grid{
    grid-template-columns:1fr;
    gap:32px;
  }
  .footer-bottom{
    flex-direction:column;
    text-align:center;
  }
  .site-footer{
    padding:48px 20px 24px;
  }
  .feature-card{
    max-width:100%;
  }
  .hero-visual-card{
    left:12px;
    bottom:12px;
  }
  .story-float-card{
    right:12px;
    top:12px;
  }
  .story-visual-img img{
    height:300px;
  }
  .section-block,.stats-section,.main-container{
    padding-left:16px;
    padding-right:16px;
  }
  .hero-inner{
    padding-left:16px;
    padding-right:16px;
  }
}
@media (max-width:520px){
  .hero-title{
    font-size:30px;
  }
  .hero-actions .btn-primary,.hero-actions .btn-secondary{
    padding:12px 20px;
    font-size:14px;
  }
  .stat-num{
    font-size:26px;
  }
  .stat-label{
    font-size:12px;
  }
  .news-item{
    grid-template-columns:48px 1fr 20px;
    padding:14px;
  }
  .news-cat{
    grid-column:2;
    grid-row:1;
    justify-self:start;
  }
  .news-title{
    grid-column:2;
    grid-row:2;
    white-space:normal;
    display:-webkit-box;
    -webkit-line-clamp:1;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .news-arrow{
    grid-column:3;
    grid-row:1 / span 2;
  }
  .news-date{
    grid-column:1;
    grid-row:1 / span 2;
  }
  .section-title{
    font-size:20px;
  }
  .mobile-cta{
    display:none;
  }
  .faq-item summary{
    padding:16px 16px;
    font-size:14px;
  }
  .faq-answer{
    padding:0 16px 16px;
    font-size:13px;
  }
  .section-head{
    flex-direction:column;
    align-items:flex-start;
    gap:12px;
  }
}

/* roulang page: category1 */
:root {
  --bg-deep: #050A14;
  --bg-body: #0B1424;
  --bg-card: rgba(255, 255, 255, 0.045);
  --bg-card-inner: rgba(10, 18, 30, 0.6);
  --border-card: rgba(255, 255, 255, 0.10);
  --primary: #0EA5E9;
  --primary-deep: #2563EB;
  --energy: #00E59A;
  --cyan: #22D3EE;
  --text-main: #E8F0F8;
  --text-sub: #94A8C3;
  --text-weak: #5B6D88;
  --divider: rgba(148, 168, 195, 0.18);
  --radius-card: 18px;
  --radius-btn: 999px;
  --radius-tag: 999px;
  --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(255, 255, 255, 0.03);
  --shadow-energy: 0 0 20px rgba(0, 229, 154, 0.30);
  --font-main: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans SC", "Segoe UI", sans-serif;
  --side-width: 248px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: var(--bg-deep);
  background-image: radial-gradient(ellipse at 20% 0%, rgba(14, 165, 233, 0.18) 0%, transparent 45%), radial-gradient(ellipse at 90% 80%, rgba(0, 229, 154, 0.05) 0%, transparent 40%);
  color: var(--text-main);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color 0.25s ease; }
a:hover { color: var(--cyan); }
button { font-family: var(--font-main); cursor: pointer; border: none; background: none; color: inherit; }
input, textarea { font-family: var(--font-main); }

/* 布局容器 */
.layout-container { display: flex; min-height: 100vh; }

/* 左侧竖向导航 */
.side-nav {
  width: var(--side-width);
  min-height: 100vh;
  background: rgba(8, 15, 30, 0.75);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-right: 1px solid rgba(148, 168, 195, 0.12);
  position: fixed;
  left: 0; top: 0; bottom: 0;
  display: flex;
  flex-direction: column;
  z-index: 120;
}
.side-nav .brand {
  padding: 28px 24px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--divider);
}
.brand-logo {
  width: 42px; height: 42px;
  background: linear-gradient(145deg, rgba(37, 99, 235, 0.35), rgba(14, 165, 233, 0.18));
  border: 1px solid rgba(34, 211, 238, 0.3);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 19px; color: var(--energy);
  box-shadow: 0 0 18px rgba(0, 229, 154, 0.12);
}
.brand-name {
  font-size: 19px; font-weight: 600;
  letter-spacing: 0.5px;
  background: linear-gradient(90deg, #E8F0F8, #9FE8FF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.side-nav .nav-links { flex: 1; padding: 20px 12px; display: flex; flex-direction: column; gap: 4px; }
.nav-item {
  display: flex; align-items: center; gap: 14px;
  height: 46px; padding: 0 16px;
  color: var(--text-sub);
  font-size: 15px; font-weight: 500;
  border-radius: 12px;
  position: relative;
  transition: all 0.25s ease;
}
.nav-item i { width: 18px; font-size: 16px; text-align: center; opacity: 0.85; }
.nav-item:hover { color: var(--text-main); background: rgba(14, 165, 233, 0.07); }
.nav-item.active { color: #fff; background: rgba(14, 165, 233, 0.10); font-weight: 600; }
.nav-item.active::before {
  content: ""; position: absolute; left: -12px; top: 50%; transform: translateY(-50%);
  width: 3px; height: 20px; border-radius: 4px;
  background: var(--energy);
  box-shadow: 0 0 12px rgba(0, 229, 154, 0.5);
}
.side-nav .side-bottom { padding: 16px; border-top: 1px solid var(--divider); }
.side-cta {
  display: block; width: 100%; padding: 12px 16px;
  background: linear-gradient(135deg, #00E59A, #22D3EE);
  color: #04130D; font-weight: 600; font-size: 14px;
  border-radius: var(--radius-btn);
  text-align: center;
  box-shadow: var(--shadow-energy);
  transition: all 0.25s ease;
}
.side-cta:hover { filter: brightness(1.08); box-shadow: 0 0 28px rgba(0, 229, 154, 0.5); transform: translateY(-2px); color: #04130D; }
.side-cta:active { transform: translateY(0); box-shadow: 0 0 12px rgba(0, 229, 154, 0.25); }
.side-cta:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }
.side-service { margin-top: 12px; display: flex; flex-direction: column; gap: 6px; }
.side-service a { font-size: 12.5px; color: var(--text-weak); display: flex; align-items: center; gap: 8px; padding: 4px 8px; border-radius: 8px; }
.side-service a:hover { color: var(--text-sub); background: rgba(255, 255, 255, 0.03); }

/* 主内容区 */
.main-content { flex: 1; margin-left: var(--side-width); padding: 0 56px; display: flex; flex-direction: column; min-height: 100vh; }
.container { max-width: 1240px; width: 100%; margin: 0 auto; }
main { flex: 1; padding: 40px 0 24px; }

/* 面包屑 */
.breadcrumb {
  font-size: 13px; color: var(--text-weak);
  padding: 8px 0 24px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-sub); }
.breadcrumb a:hover { color: var(--cyan); }
.breadcrumb .sep { color: var(--text-weak); opacity: 0.6; }
.breadcrumb .current { color: var(--text-sub); }

/* 页面 H1 区域 */
.page-header { padding: 16px 0 32px; position: relative; }
.page-header::after { content: ""; display: block; width: 48px; height: 4px; background: var(--energy); border-radius: 4px; margin-top: 20px; box-shadow: 0 0 16px rgba(0, 229, 154, 0.4); }
.page-title {
  font-size: 38px; font-weight: 800; line-height: 1.3;
  color: var(--text-main); letter-spacing: 0.5px;
}
.page-title em { font-style: normal; color: var(--energy); }
.page-subtitle { margin-top: 12px; font-size: 16px; color: var(--text-sub); max-width: 720px; line-height: 1.8; }

/* 引导区：两栏交错 */
.intro-section { padding: 48px 0 56px; }
.intro-grid { display: grid; grid-template-columns: 45% 55%; gap: 64px; align-items: center; }
.intro-copy .section-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--cyan); background: rgba(14, 165, 233, 0.10);
  border: 1px solid rgba(34, 211, 238, 0.2); border-radius: var(--radius-tag);
  padding: 6px 16px; margin-bottom: 20px; letter-spacing: 0.5px;
}
.intro-copy h2 { font-size: 30px; font-weight: 800; line-height: 1.35; color: var(--text-main); margin-bottom: 20px; }
.intro-copy p { color: var(--text-sub); font-size: 15px; line-height: 1.8; margin-bottom: 16px; }
.intro-copy .link-more { font-size: 14px; color: var(--energy); display: inline-flex; align-items: center; gap: 8px; margin-top: 8px; }
.intro-copy .link-more:hover { color: #9FF5D8; }
.intro-media { position: relative; }
.intro-image-wrap { border-radius: var(--radius-card); overflow: hidden; position: relative; box-shadow: var(--shadow-card); border: 1px solid var(--border-card); }
.intro-image-wrap img { width: 100%; height: auto; min-height: 260px; object-fit: cover; transition: transform 0.6s ease; }
.intro-image-wrap::after { content: ""; position: absolute; inset: 0; background: linear-gradient(200deg, transparent 60%, rgba(5, 10, 20, 0.4) 100%); }
.intro-float-card {
  position: absolute; left: -18px; bottom: 24px;
  background: rgba(10, 18, 30, 0.85);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(34, 211, 238, 0.25);
  border-radius: 14px;
  padding: 16px 20px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  display: flex; align-items: center; gap: 12px;
  z-index: 2;
}
.intro-float-card .float-icon { width: 34px; height: 34px; border-radius: 8px; background: rgba(0, 229, 154, 0.15); display: flex; align-items: center; justify-content: center; color: var(--energy); font-size: 15px; }
.intro-float-card p { font-size: 13px; color: var(--text-main); font-weight: 500; line-height: 1.4; }
.intro-float-card span { font-size: 11.5px; color: var(--text-sub); }

/* 区块标题 */
.section-head { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 32px; gap: 16px; }
.section-head .head-left { display: flex; align-items: center; gap: 12px; }
.section-head .head-bar { width: 4px; height: 24px; background: var(--energy); border-radius: 4px; box-shadow: 0 0 12px rgba(0, 229, 154, 0.4); }
.section-head h2 { font-size: 28px; font-weight: 800; color: var(--text-main); line-height: 1.4; }
.section-head .section-link { font-size: 14px; color: var(--text-sub); display: inline-flex; align-items: center; gap: 6px; transition: color 0.25s ease; }
.section-head .section-link:hover { color: var(--cyan); }

/* 资讯卡片区 */
.cards-section { padding: 32px 0 56px; }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.info-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all 0.35s ease;
  position: relative;
}
.info-card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 60%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent);
  z-index: 1; pointer-events: none;
}
.info-card:hover { transform: translateY(-4px); border-color: rgba(34, 211, 238, 0.5); box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(34, 211, 238, 0.1); }
.card-media { position: relative; overflow: hidden; aspect-ratio: 16 / 9; }
.card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.info-card:hover .card-media img { transform: scale(1.04); }
.card-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 60%, rgba(5, 10, 20, 0.25) 100%); }
.card-badge {
  position: absolute; top: 12px; left: 12px; z-index: 3;
  background: rgba(8, 15, 30, 0.7);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(34, 211, 238, 0.3);
  color: var(--cyan);
  font-size: 12px; font-weight: 500;
  padding: 4px 14px; border-radius: var(--radius-tag);
}
.card-body { padding: 20px 20px 22px; }
.card-body h3 { font-size: 19px; font-weight: 700; color: var(--text-main); line-height: 1.45; margin-bottom: 10px; transition: color 0.25s ease; }
.info-card:hover .card-body h3 { color: var(--cyan); }
.card-body p { font-size: 14px; color: var(--text-sub); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 14px; }
.card-meta { display: flex; align-items: center; justify-content: space-between; padding-top: 12px; border-top: 1px solid var(--divider); }
.card-meta .date { font-size: 12.5px; color: var(--text-weak); display: flex; align-items: center; gap: 6px; }
.card-meta .date i { font-size: 11px; }
.card-link { font-size: 13px; color: var(--energy); display: inline-flex; align-items: center; gap: 4px; transition: all 0.25s ease; }
.card-link:hover { color: #9FF5D8; gap: 8px; }

/* 数据指标带 */
.stats-section { padding: 24px 0 56px; }
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
  background: var(--bg-card); backdrop-filter: blur(12px) saturate(140%);
  border: 1px solid var(--border-card); border-radius: var(--radius-card);
  padding: 32px 24px; box-shadow: var(--shadow-card);
}
.stat-item { text-align: center; padding: 8px; }
.stat-number { font-size: 36px; font-weight: 800; color: var(--energy); line-height: 1.2; letter-spacing: 0.5px; text-shadow: 0 0 24px rgba(0, 229, 154, 0.25); }
.stat-item + .stat-item { border-left: 1px solid var(--divider); }
.stat-label { font-size: 13px; color: var(--text-sub); margin-top: 8px; }

/* 服务流程区 */
.process-section { padding: 48px 0 56px; }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.process-step {
  background: var(--bg-card); backdrop-filter: blur(12px) saturate(140%);
  border: 1px solid var(--border-card); border-radius: var(--radius-card);
  padding: 28px 24px; position: relative; overflow: hidden;
  transition: all 0.35s ease;
}
.process-step:hover { transform: translateY(-4px); border-color: rgba(34, 211, 238, 0.35); box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35); }
.step-number {
  font-size: 40px; font-weight: 800; color: rgba(14, 165, 233, 0.15);
  position: absolute; top: 12px; right: 16px; line-height: 1; font-family: var(--font-main);
}
.process-step h3 { font-size: 17px; font-weight: 700; color: var(--text-main); margin-bottom: 10px; }
.process-step p { font-size: 13.5px; color: var(--text-sub); line-height: 1.65; }
.process-step::before { content: ""; position: absolute; top: 0; left: 24px; width: 28px; height: 3px; background: var(--energy); border-radius: 4px; box-shadow: 0 0 12px rgba(0, 229, 154, 0.35); }

/* FAQ 区域 */
.faq-section { padding: 32px 0 48px; }
.faq-list { display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: var(--bg-card); backdrop-filter: blur(12px) saturate(140%);
  border: 1px solid var(--border-card); border-radius: 14px;
  overflow: hidden; transition: all 0.3s ease;
}
.faq-item:hover { border-color: rgba(34, 211, 238, 0.25); }
.faq-item summary {
  list-style: none; cursor: pointer;
  display: flex; align-items: center; gap: 14px;
  padding: 18px 22px; font-size: 16px; font-weight: 600; color: var(--text-main);
  transition: color 0.25s ease;
  position: relative;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--cyan); }
.faq-item summary .faq-btn {
  width: 24px; height: 24px; flex-shrink: 0;
  border-radius: 50%; background: rgba(14, 165, 233, 0.12);
  border: 1px solid rgba(34, 211, 238, 0.3);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; color: var(--cyan); transition: all 0.3s ease;
}
.faq-item[open] summary .faq-btn { transform: rotate(45deg); background: rgba(0, 229, 154, 0.15); border-color: var(--energy); color: var(--energy); }
.faq-answer { padding: 0 22px 20px 60px; font-size: 14px; color: var(--text-sub); line-height: 1.8; }
.faq-answer .answer-inner { background: rgba(10, 18, 30, 0.5); border-radius: 8px; padding: 14px 16px; }

/* CTA 区域 */
.cta-section { padding: 48px 0 56px; }
.cta-inner {
  background: var(--bg-body);
  background-image: radial-gradient(ellipse at 80% 120%, rgba(0, 229, 154, 0.08) 0%, transparent 50%), radial-gradient(ellipse at 10% 10%, rgba(14, 165, 233, 0.10) 0%, transparent 45%);
  border: 1px solid rgba(34, 211, 238, 0.15); border-radius: 22px;
  padding: 56px 48px; text-align: center; position: relative; overflow: hidden;
  box-shadow: var(--shadow-card);
}
.cta-inner::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px); background-size: 44px 44px; pointer-events: none; }
.cta-inner h2 { font-size: 30px; font-weight: 800; color: var(--text-main); margin-bottom: 14px; position: relative; }
.cta-inner h2 em { font-style: normal; color: var(--energy); }
.cta-inner p { font-size: 15px; color: var(--text-sub); margin-bottom: 28px; position: relative; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; position: relative; }

/* 按钮 */
.btn-primary {
  display: inline-block; padding: 14px 36px;
  background: linear-gradient(135deg, #00E59A, #22D3EE);
  color: #04130D; font-weight: 600; font-size: 15px;
  border-radius: var(--radius-btn); border: none; cursor: pointer;
  box-shadow: var(--shadow-energy);
  transition: all 0.3s ease; text-decoration: none; text-align: center;
}
.btn-primary:hover { filter: brightness(1.08); box-shadow: 0 0 28px rgba(0, 229, 154, 0.5); transform: translateY(-2px); color: #04130D; }
.btn-primary:active { transform: translateY(0); box-shadow: 0 0 12px rgba(0, 229, 154, 0.25); }
.btn-primary:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }
.btn-outline {
  display: inline-block; padding: 14px 36px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(34, 211, 238, 0.4);
  color: var(--text-main); font-weight: 500; font-size: 15px;
  border-radius: var(--radius-btn); cursor: pointer; text-decoration: none; text-align: center;
  transition: all 0.3s ease;
}
.btn-outline:hover { border-color: var(--cyan); background: rgba(34, 211, 238, 0.08); color: #fff; }
.btn-outline:active { background: rgba(34, 211, 238, 0.12); }
.btn-outline:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

/* 页脚 */
.site-footer { margin-top: 56px; border-top: 1px solid var(--divider); padding: 56px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; margin-bottom: 40px; }
.footer-brand h3 { font-size: 20px; font-weight: 700; color: var(--text-main); margin-bottom: 16px; display: flex; align-items: center; }
.footer-brand p { font-size: 14px; color: var(--text-sub); line-height: 1.8; max-width: 420px; }
.footer-col h4 { font-size: 15px; font-weight: 600; color: var(--text-main); margin-bottom: 16px; letter-spacing: 0.3px; }
.footer-col a { display: block; font-size: 13.5px; color: var(--text-sub); padding: 6px 0; transition: all 0.25s ease; }
.footer-col a:hover { color: var(--energy); padding-left: 4px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 24px; border-top: 1px solid var(--divider); flex-wrap: wrap; gap: 12px; }
.footer-bottom p { font-size: 12.5px; color: var(--text-weak); }

/* 移动端顶部栏 */
.mobile-header {
  display: none;
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  height: 64px; background: #08101F; border-bottom: 1px solid var(--divider);
  align-items: center; justify-content: space-between; padding: 0 20px;
}
.mobile-brand { font-size: 18px; font-weight: 600; color: var(--text-main); display: flex; align-items: center; gap: 10px; }
.mobile-brand i { color: var(--energy); }
.mobile-toggle { width: 40px; height: 40px; border-radius: 10px; background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.1); color: var(--text-main); font-size: 18px; display: flex; align-items: center; justify-content: center; transition: all 0.3s ease; }
.mobile-toggle:hover { border-color: var(--cyan); color: var(--cyan); }
.mobile-toggle:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

/* 移动端抽屉菜单 */
.mobile-menu {
  display: none;
  position: fixed; inset: 64px 0 0 0; z-index: 190;
  background: rgba(10, 18, 34, 0.95);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  padding: 32px 24px 40px;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.35s ease;
  overflow-y: auto;
}
.mobile-menu.open { transform: translateX(0); }
.mobile-menu .nav-item { font-size: 16px; height: 52px; padding: 0 12px; }
.mobile-menu .nav-item.active { background: rgba(14, 165, 233, 0.12); }
.mobile-menu .side-cta { margin-top: 24px; }
.mobile-menu .side-service { margin-top: 16px; }

/* 响应式 */
@media (max-width: 1024px) {
  .side-nav { display: none; }
  .mobile-header { display: flex; }
  .mobile-menu { display: flex; }
  .main-content { margin-left: 0; padding: 64px 20px 0; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid .stat-item:nth-child(3) { border-left: none; }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .intro-grid { grid-template-columns: 1fr; gap: 40px; }
  .intro-float-card { left: 12px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .container { max-width: 100%; }
}
@media (max-width: 768px) {
  .main-content { padding: 64px 16px 0; }
  .page-title { font-size: 30px; }
  .section-head h2 { font-size: 24px; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 12px; }
  .card-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; padding: 24px 16px; }
  .stat-number { font-size: 30px; }
  .process-grid { grid-template-columns: 1fr; }
  .cta-inner { padding: 40px 20px; }
  .cta-inner h2 { font-size: 25px; }
  .btn-primary, .btn-outline { width: 100%; max-width: 320px; }
  .cta-actions { flex-direction: column; align-items: center; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .intro-float-card { position: static; margin-top: 16px; align-self: flex-start; }
}
@media (max-width: 520px) {
  .main-content { padding: 64px 14px 0; }
  .page-title { font-size: 27px; }
  .card-body h3 { font-size: 17px; }
  .stat-item { padding: 6px; }
  .stat-number { font-size: 26px; }
  .stat-label { font-size: 12px; }
  .faq-item summary { font-size: 15px; padding: 16px 16px; }
  .faq-answer { padding: 0 16px 18px 48px; }
}

/* 工具类 */
.text-gradient {
  background: linear-gradient(90deg, var(--energy), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* roulang page: article */
:root {
            --bg-deep: #050A14;
            --bg-base: #0B1424;
            --primary: #0EA5E9;
            --primary-deep: #2563EB;
            --energy: #00E59A;
            --cyan: #22D3EE;
            --card-bg: rgba(255, 255, 255, 0.045);
            --card-border: rgba(255, 255, 255, 0.12);
            --text-main: #E8F0F8;
            --text-sub: #94A8C3;
            --text-weak: #5B6D88;
            --divider: rgba(148, 168, 195, 0.18);
            --radius-card: 18px;
            --radius-btn: 999px;
            --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.35);
            --font-main: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans SC", "Segoe UI", sans-serif;
            --side-nav-w: 248px;
            --content-padding: 56px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            background: var(--bg-deep);
            color: var(--text-main);
            line-height: 1.75;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .25s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        .layout-wrapper {
            display: flex;
            min-height: 100vh;
        }

        /* ===== Side Nav (Desktop) ===== */
        .side-nav {
            position: fixed;
            left: 0;
            top: 0;
            bottom: 0;
            width: var(--side-nav-w);
            background: rgba(8, 15, 30, 0.75);
            backdrop-filter: blur(14px) saturate(140%);
            -webkit-backdrop-filter: blur(14px) saturate(140%);
            border-right: 1px solid var(--divider);
            display: flex;
            flex-direction: column;
            z-index: 100;
            padding: 28px 20px 24px;
        }
        .side-nav .brand {
            padding-bottom: 32px;
            border-bottom: 1px solid var(--divider);
            margin-bottom: 20px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-main);
        }
        .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(0, 229, 154, 0.2), rgba(34, 211, 238, 0.15));
            border: 1px solid rgba(0, 229, 154, 0.35);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--energy);
            flex-shrink: 0;
        }
        .brand-text {
            font-size: 18px;
            font-weight: 600;
            letter-spacing: .5px;
            color: var(--text-main);
        }
        .side-nav .nav-items {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }
        .side-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 14px;
            border-radius: 12px;
            color: var(--text-sub);
            font-size: 15px;
            font-weight: 500;
            position: relative;
            transition: background .25s, color .25s;
            border-left: 3px solid transparent;
        }
        .side-nav .nav-item i {
            width: 18px;
            text-align: center;
            font-size: 16px;
        }
        .side-nav .nav-item:hover {
            background: rgba(14, 165, 233, 0.08);
            color: var(--text-main);
        }
        .side-nav .nav-item.active {
            background: rgba(14, 165, 233, 0.10);
            color: #ffffff;
            border-left-color: var(--energy);
        }
        .side-nav .nav-item.active::before {
            content: '';
            position: absolute;
            left: -20px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--energy);
            border-radius: 0 3px 3px 0;
        }
        .side-footer {
            margin-top: auto;
            padding-top: 20px;
            border-top: 1px solid var(--divider);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: none;
            cursor: pointer;
            font-weight: 600;
            border-radius: var(--radius-btn);
            transition: transform .25s, box-shadow .25s, background .25s, border-color .25s, opacity .25s;
            text-decoration: none;
            padding: 14px 32px;
            font-size: 15px;
            line-height: 1.4;
        }
        .btn:focus-visible {
            outline: 2px solid var(--cyan);
            outline-offset: 3px;
        }
        .btn-primary {
            background: linear-gradient(135deg, #00E59A, #22D3EE);
            color: #04130D;
            box-shadow: 0 0 20px rgba(0, 229, 154, 0.30);
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, #00e6a5, #36e5f5);
            box-shadow: 0 0 28px rgba(0, 229, 154, 0.5);
            transform: translateY(-2px);
            color: #04130D;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 12px rgba(0, 229, 154, 0.25);
        }
        .btn-secondary {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(34, 211, 238, 0.4);
            color: var(--text-main);
        }
        .btn-secondary:hover {
            border-color: var(--cyan);
            background: rgba(34, 211, 238, 0.08);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            background: rgba(34, 211, 238, 0.12);
            transform: translateY(0);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 13px;
        }
        .btn-block {
            width: 100%;
        }
        .contact-link {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-sub);
            font-size: 14px;
            padding: 8px 6px;
            border-radius: 8px;
            transition: background .2s, color .2s;
        }
        .contact-link:hover {
            background: rgba(14, 165, 233, 0.06);
            color: var(--text-main);
        }
        .contact-link i {
            width: 18px;
            text-align: center;
            color: var(--cyan);
        }

        /* ===== Main Area ===== */
        .main-area {
            margin-left: var(--side-nav-w);
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
            background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-base) 100%);
        }
        .content {
            flex: 1;
            padding: var(--content-padding);
            max-width: 1240px;
            width: 100%;
            margin: 0 auto;
        }

        /* ===== Mobile Header ===== */
        .mobile-header {
            display: none;
            position: sticky;
            top: 0;
            z-index: 90;
            height: 64px;
            background: #08101F;
            border-bottom: 1px solid var(--divider);
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
        }
        .mobile-header .hamburger {
            background: transparent;
            border: none;
            color: var(--text-main);
            font-size: 20px;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
        }
        .mobile-header .mobile-brand {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .mobile-header .mobile-brand i {
            color: var(--energy);
        }

        /* ===== Mobile Menu Overlay ===== */
        .mobile-menu-overlay {
            display: none;
            position: fixed;
            inset: 0;
            z-index: 200;
            background: rgba(10, 18, 34, 0.95);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            flex-direction: column;
            padding: 24px;
        }
        .mobile-menu-overlay.open {
            display: flex;
        }
        .overlay-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 40px;
        }
        .overlay-header .close-btn {
            background: transparent;
            border: none;
            color: var(--text-main);
            font-size: 22px;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
        }
        .overlay-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
        }
        .overlay-brand i {
            color: var(--energy);
        }
        .overlay-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            margin-bottom: 40px;
        }
        .overlay-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 16px;
            margin-bottom: 8px;
            border-radius: 14px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.06);
            color: var(--text-main);
            font-size: 16px;
            font-weight: 500;
            text-decoration: none;
            transition: background .25s, border-color .25s;
        }
        .overlay-nav .nav-item i {
            width: 20px;
            text-align: center;
            color: var(--cyan);
        }
        .overlay-nav .nav-item.active {
            background: rgba(14, 165, 233, 0.12);
            border-color: rgba(14, 165, 233, 0.35);
            color: #fff;
        }
        .overlay-nav .nav-item.active i {
            color: var(--energy);
        }
        .overlay-foot {
            margin-top: auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-weak);
            margin-bottom: 24px;
        }
        .breadcrumb a {
            color: var(--text-sub);
            transition: color .2s;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: var(--text-weak);
            margin: 0 2px;
        }
        .breadcrumb .current {
            color: var(--text-weak);
            max-width: 260px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* ===== Post Header ===== */
        .post {
            margin-bottom: 64px;
        }
        .post-header {
            margin-bottom: 40px;
        }
        .post-header h1 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: .5px;
        }
        .post-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
            align-items: center;
            font-size: 13px;
            color: var(--text-weak);
            margin-bottom: 24px;
        }
        .post-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .post-meta i {
            font-size: 13px;
            color: var(--text-weak);
        }
        .post-meta .meta-cat {
            background: rgba(14, 165, 233, 0.12);
            border: 1px solid rgba(14, 165, 233, 0.25);
            color: var(--cyan);
            border-radius: var(--radius-btn);
            padding: 2px 14px;
            font-size: 12px;
            font-weight: 500;
        }
        .post-summary {
            background: rgba(11, 20, 36, 0.75);
            border-left: 3px solid var(--energy);
            padding: 18px 22px;
            border-radius: 10px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-sub);
            margin-top: 8px;
        }

        /* ===== Article Body ===== */
        .article-body {
            max-width: 760px;
            margin: 0 auto 48px;
        }
        .article-body p {
            margin-bottom: 20px;
            line-height: 1.8;
            font-size: 16px;
            color: var(--text-main);
        }
        .article-body h2 {
            font-size: 26px;
            font-weight: 700;
            margin: 40px 0 16px;
            color: var(--text-main);
            line-height: 1.4;
            position: relative;
            padding-left: 14px;
        }
        .article-body h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 4px;
            bottom: 4px;
            width: 4px;
            border-radius: 4px;
            background: linear-gradient(180deg, var(--energy), var(--cyan));
        }
        .article-body h3 {
            font-size: 20px;
            font-weight: 700;
            margin: 28px 0 12px;
            color: var(--text-main);
            line-height: 1.4;
        }
        .article-body h4 {
            font-size: 17px;
            font-weight: 600;
            margin: 20px 0 10px;
            color: var(--text-main);
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 20px 20px;
            line-height: 1.8;
            color: var(--text-main);
            font-size: 16px;
        }
        .article-body li {
            margin-bottom: 6px;
        }
        .article-body blockquote {
            border-left: 3px solid var(--primary);
            background: rgba(14, 165, 233, 0.06);
            padding: 16px 20px;
            border-radius: 8px;
            margin: 24px 0;
            color: var(--text-sub);
            font-style: normal;
            line-height: 1.75;
        }
        .article-body blockquote p {
            margin-bottom: 0;
        }
        .article-body code {
            background: rgba(255, 255, 255, 0.08);
            border-radius: 4px;
            padding: 2px 6px;
            font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
            font-size: 14px;
            color: var(--cyan);
        }
        .article-body pre {
            background: rgba(8, 15, 30, 0.8);
            border: 1px solid var(--card-border);
            border-radius: 12px;
            padding: 20px;
            overflow-x: auto;
            margin: 24px 0;
            line-height: 1.6;
        }
        .article-body pre code {
            background: transparent;
            padding: 0;
            color: var(--text-main);
            font-size: 14px;
        }
        .article-body img {
            max-width: 100%;
            border-radius: 12px;
            margin: 20px 0;
            height: auto;
        }
        .article-body a {
            color: var(--cyan);
            border-bottom: 1px solid rgba(34, 211, 238, 0.3);
            transition: border-color .2s;
        }
        .article-body a:hover {
            border-color: var(--cyan);
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 15px;
        }
        .article-body th,
        .article-body td {
            border: 1px solid var(--divider);
            padding: 10px 14px;
            text-align: left;
        }
        .article-body th {
            background: rgba(14, 165, 233, 0.08);
            font-weight: 600;
            color: var(--text-main);
        }
        .article-body tr:nth-child(even) td {
            background: rgba(255, 255, 255, 0.02);
        }
        .article-body hr {
            border: none;
            height: 1px;
            background: var(--divider);
            margin: 32px 0;
        }

        /* ===== Empty State ===== */
        .empty-state {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 60px 24px;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 16px;
            box-shadow: var(--shadow-card);
        }
        .empty-icon {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: rgba(0, 229, 154, 0.08);
            border: 2px solid rgba(0, 229, 154, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: var(--energy);
        }
        .empty-state p {
            color: var(--text-sub);
            font-size: 16px;
        }
        .empty-state .btn {
            margin-top: 8px;
        }

        /* ===== Tags ===== */
        .post-tags {
            max-width: 760px;
            margin: 0 auto 48px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
        }
        .tag-label {
            font-size: 14px;
            color: var(--text-weak);
            margin-right: 4px;
        }
        .tag {
            display: inline-block;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-sub);
            font-size: 13px;
            border-radius: var(--radius-btn);
            padding: 5px 16px;
            transition: background .2s, border-color .2s, color .2s;
        }
        .tag:hover {
            background: rgba(14, 165, 233, 0.08);
            border-color: rgba(14, 165, 233, 0.35);
            color: var(--cyan);
        }

        /* ===== Related Posts ===== */
        .related-posts {
            margin-bottom: 56px;
        }
        .related-posts h2 {
            font-size: 26px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 30px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .related-posts h2::before {
            content: '';
            width: 4px;
            height: 22px;
            border-radius: 4px;
            background: var(--energy);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: transform .3s, box-shadow .3s, border-color .3s;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
            border-color: rgba(34, 211, 238, 0.5);
        }
        .related-card .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
            background: linear-gradient(135deg, #0B1A2E, #132742);
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .related-card:hover .card-img img {
            transform: scale(1.04);
        }
        .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(8, 15, 30, 0.7);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(34, 211, 238, 0.3);
            color: var(--cyan);
            font-size: 12px;
            font-weight: 500;
            padding: 3px 12px;
            border-radius: var(--radius-btn);
        }
        .related-card .card-body {
            padding: 20px 22px 24px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }
        .related-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.4;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin: 0;
        }
        .related-card .card-foot {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: auto;
            padding-top: 12px;
            border-top: 1px solid rgba(148, 168, 195, 0.12);
            font-size: 13px;
            color: var(--text-weak);
        }
        .related-card .card-foot a {
            font-size: 13px;
            color: var(--cyan);
            font-weight: 500;
            transition: gap .2s;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .related-card .card-foot a:hover {
            gap: 8px;
        }

        /* ===== Post Actions ===== */
        .post-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            max-width: 760px;
            margin: 0 auto 56px;
        }

        /* ===== Footer ===== */
        .site-footer {
            border-top: 1px solid var(--divider);
            background: rgba(5, 10, 20, 0.6);
            padding: 56px 56px 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            max-width: 1200px;
            margin: 0 auto 40px;
        }
        .footer-brand h3 {
            font-size: 20px;
            color: var(--text-main);
            margin-bottom: 14px;
            font-weight: 700;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-sub);
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-sub);
            margin-bottom: 10px;
            transition: color .2s, padding-left .2s;
        }
        .footer-col a:hover {
            color: var(--cyan);
            padding-left: 4px;
        }
        .footer-bottom {
            max-width: 1200px;
            margin: 0 auto;
            border-top: 1px solid var(--divider);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-weak);
        }
        .footer-bottom p {
            margin: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1199px) {
            .content {
                padding: 40px 32px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 1023px) {
            .side-nav {
                display: none;
            }
            .main-area {
                margin-left: 0;
            }
            .mobile-header {
                display: flex;
            }
            .content {
                padding: 28px 20px;
            }
            .post-header h1 {
                font-size: 30px;
            }
            .site-footer {
                padding: 40px 20px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 767px) {
            .content {
                padding: 20px 16px;
            }
            .breadcrumb {
                font-size: 12px;
                margin-bottom: 18px;
            }
            .breadcrumb .current {
                max-width: 160px;
            }
            .post-header h1 {
                font-size: 24px;
                line-height: 1.35;
            }
            .post-meta {
                gap: 8px 14px;
                font-size: 12px;
                margin-bottom: 18px;
            }
            .post-summary {
                padding: 14px 16px;
                font-size: 14px;
                line-height: 1.7;
            }
            .article-body p {
                font-size: 15px;
                line-height: 1.8;
            }
            .article-body h2 {
                font-size: 22px;
            }
            .article-body h3 {
                font-size: 18px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .post-actions {
                flex-direction: column;
            }
            .post-actions .btn {
                width: 100%;
                margin: 0;
            }
            .btn-block-mobile {
                width: 100%;
                margin: 0 16px;
            }
            .post-tags {
                gap: 8px;
            }
            .tag {
                font-size: 12px;
                padding: 4px 12px;
            }
            .mobile-header {
                padding: 0 16px;
            }
            .mobile-header .btn-sm {
                padding: 6px 16px;
                font-size: 12px;
            }
        }
        @media (max-width: 520px) {
            .post-header h1 {
                font-size: 21px;
            }
            .post-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .post-summary {
                font-size: 13px;
            }
            .related-card .card-body {
                padding: 16px 18px 20px;
            }
            .related-card .card-body h3 {
                font-size: 16px;
            }
            .footer-grid {
                gap: 20px;
            }
            .footer-brand p {
                font-size: 13px;
            }
            .footer-bottom {
                font-size: 12px;
            }
        }

/* roulang page: category2 */
/* ========== 设计变量 ========== */
:root {
  --bg-deep: #050A14;
  --bg-base: #0B1424;
  --primary: #0EA5E9;
  --primary-deep: #2563EB;
  --energy: #00E59A;
  --accent: #22D3EE;
  --card-bg: rgba(255,255,255,0.04);
  --card-border: rgba(255,255,255,0.10);
  --text-main: #E8F0F8;
  --text-sub: #94A8C3;
  --text-weak: #5B6D88;
  --divider: rgba(148,168,195,0.18);
  --radius-card: 18px;
  --radius-btn: 999px;
  --radius-tag: 999px;
  --radius-icon: 12px;
  --shadow-card: 0 12px 40px rgba(0,0,0,0.35);
  --shadow-glow: 0 0 20px rgba(0,229,154,0.30);
  --font-main: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans SC", "Segoe UI", sans-serif;
  --sidebar-w: 248px;
  --spacing-section: 88px;
  --spacing-mobile: 56px;
}

/* ========== Reset ========== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: linear-gradient(135deg, #050A14 0%, #0B1424 50%, #0A1220 100%);
  color: var(--text-main);
  line-height: 1.75;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; transition: color .25s ease; }
a:hover { color: var(--accent); }
img { max-width: 100%; display: block; object-fit: cover; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
ul, ol { list-style: none; }

/* ========== 容器 ========== */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 40px;
}

/* ========== 左侧导航（桌面 ≥1024px） ========== */
.side-nav {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-w);
  background: rgba(8,15,30,0.88);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-right: 1px solid rgba(148,168,195,0.12);
  display: flex;
  flex-direction: column;
  z-index: 1000;
  padding: 24px 16px 20px;
}
.side-nav::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 0%, rgba(14,165,233,0.10) 0%, transparent 60%);
  pointer-events: none;
}
.brand-area {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 8px 28px;
  border-bottom: 1px solid var(--divider);
  margin-bottom: 20px;
}
.logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--energy) 0%, var(--accent) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #04130D;
  font-size: 18px;
  box-shadow: 0 0 18px rgba(0,229,154,0.35);
  flex-shrink: 0;
}
.logo-text {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: 0.5px;
}
.side-nav-links {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-sub);
  position: relative;
  transition: all .25s ease;
  border-left: 3px solid transparent;
}
.nav-item i {
  width: 18px;
  font-size: 15px;
  text-align: center;
  color: var(--text-weak);
  transition: color .25s ease;
}
.nav-item:hover {
  background: rgba(14,165,233,0.08);
  color: var(--text-main);
}
.nav-item:hover i {
  color: var(--accent);
}
.nav-item.active {
  background: rgba(14,165,233,0.10);
  border-left-color: var(--energy);
  color: #fff;
  font-weight: 600;
}
.nav-item.active i {
  color: var(--energy);
}
.side-nav-bottom {
  padding-top: 20px;
  border-top: 1px solid var(--divider);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.nav-cta {
  display: block;
  text-align: center;
  padding: 12px 20px;
  border-radius: var(--radius-btn);
  background: linear-gradient(135deg, var(--energy) 0%, var(--accent) 100%);
  color: #04130D;
  font-size: 14px;
  font-weight: 600;
  box-shadow: var(--shadow-glow);
  transition: all .3s ease;
}
.nav-cta:hover {
  color: #04130D;
  transform: translateY(-2px);
  box-shadow: 0 0 28px rgba(0,229,154,0.5);
}
.nav-support {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.nav-support a {
  font-size: 13px;
  color: var(--text-weak);
  padding: 6px 10px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all .2s ease;
}
.nav-support a:hover {
  color: var(--accent);
  background: rgba(14,165,233,0.06);
}

/* ========== 主内容区 ========== */
.main-wrapper {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.page-content {
  flex: 1;
  padding: 40px 56px 0;
}

/* ========== 面包屑 ========== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-weak);
  margin-bottom: 28px;
}
.breadcrumb a {
  color: var(--text-weak);
  transition: color .2s ease;
}
.breadcrumb a:hover {
  color: var(--accent);
}
.breadcrumb-sep {
  color: var(--text-weak);
}

/* ========== 页面标题区 ========== */
.page-header {
  position: relative;
  padding: 40px 0 48px;
  margin-bottom: 48px;
  background: radial-gradient(ellipse at 80% 50%, rgba(14,165,233,0.10) 0%, transparent 60%);
  border-bottom: 1px solid var(--divider);
}
.page-header h1 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.3;
  color: #fff;
  margin-bottom: 14px;
  letter-spacing: 1px;
}
.page-subtitle {
  font-size: 15px;
  color: var(--text-sub);
  max-width: 560px;
  line-height: 1.7;
}

/* ========== 通用板块头部 ========== */
.section-head {
  margin-bottom: 40px;
  position: relative;
}
.section-head h2 {
  font-size: 30px;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.3;
  margin-bottom: 10px;
  position: relative;
  padding-left: 16px;
}
.section-head h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 22px;
  border-radius: 2px;
  background: var(--energy);
}
.section-head p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.6;
}

/* ========== 品牌故事区 ========== */
.story-section {
  display: grid;
  grid-template-columns: 45% 55%;
  gap: 48px;
  align-items: center;
  padding: 32px 0 64px;
  margin-bottom: 48px;
}
.story-text .section-tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: var(--radius-tag);
  background: rgba(255,255,255,0.08);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.story-text h2 {
  font-size: 30px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  line-height: 1.35;
}
.story-text p {
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 16px;
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  transition: all .25s ease;
}
.text-link i {
  font-size: 12px;
  transition: transform .25s ease;
}
.text-link:hover {
  color: var(--energy);
}
.text-link:hover i {
  transform: translateX(4px);
}
.story-visual {
  position: relative;
}
.story-visual img {
  width: 100%;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--card-border);
  aspect-ratio: 16/11;
  object-fit: cover;
}
.floating-card {
  position: absolute;
  bottom: 24px;
  left: -30px;
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 14px;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.30);
}
.floating-icon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: rgba(0,229,154,0.20);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--energy);
  font-size: 14px;
}
.floating-card p {
  font-size: 13px;
  color: var(--text-main);
  font-weight: 500;
  margin: 0;
}

/* ========== 发展里程碑 ========== */
.timeline-section {
  padding: 64px 0;
  border-top: 1px solid var(--divider);
  margin-bottom: 32px;
}
.timeline-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.timeline-item {
  position: relative;
  padding-top: 32px;
}
.timeline-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, rgba(0,229,154,0.4), rgba(14,165,233,0.15));
  border-radius: 1px;
}
.timeline-dot {
  position: absolute;
  top: -5px;
  left: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--energy);
  border: 2px solid rgba(0,229,154,0.25);
  box-shadow: 0 0 12px rgba(0,229,154,0.5);
}
.timeline-year {
  font-size: 28px;
  font-weight: 800;
  color: var(--energy);
  margin-bottom: 8px;
  letter-spacing: 1px;
}
.timeline-card {
  background: var(--card-bg);
  backdrop-filter: blur(10px) saturate(120%);
  -webkit-backdrop-filter: blur(10px) saturate(120%);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  padding: 18px 20px;
  transition: all .3s ease;
}
.timeline-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}
.timeline-card p {
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.65;
}
.timeline-card:hover {
  border-color: rgba(34,211,238,0.4);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

/* ========== 品牌价值 ========== */
.values-section {
  padding: 64px 0;
  border-top: 1px solid var(--divider);
  margin-bottom: 48px;
}
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: start;
}
.value-card {
  background: var(--card-bg);
  backdrop-filter: blur(12px) saturate(130%);
  -webkit-backdrop-filter: blur(12px) saturate(130%);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  transition: all .3s ease;
  position: relative;
  overflow: hidden;
}
.value-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,229,154,0.5), transparent);
  opacity: 0;
  transition: opacity .3s ease;
}
.value-card:hover {
  background: rgba(255,255,255,0.055);
  border-color: rgba(34,211,238,0.35);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}
.value-card:hover::after {
  opacity: 1;
}
.value-card:nth-child(2) {
  transform: translateY(20px);
}
.value-card:nth-child(2):hover {
  transform: translateY(16px);
}
.value-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(0,229,154,0.18), rgba(34,211,238,0.12));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--energy);
  margin-bottom: 18px;
}
.value-card h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}
.value-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
}

/* ========== 数据指标 ========== */
.stats-section {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding: 40px 0;
  margin-bottom: 48px;
  border-top: 1px solid var(--divider);
  border-bottom: 1px solid var(--divider);
}
.stat-item {
  text-align: center;
  padding: 24px 16px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all .3s ease;
}
.stat-item:hover {
  border-color: rgba(34,211,238,0.35);
  transform: translateY(-3px);
}
.stat-number {
  font-size: 38px;
  font-weight: 800;
  color: var(--energy);
  line-height: 1.2;
  margin-bottom: 8px;
  letter-spacing: 1px;
}
.stat-label {
  font-size: 13px;
  color: var(--text-sub);
  letter-spacing: 0.5px;
}

/* ========== FAQ ========== */
.faq-section {
  padding: 64px 0;
  border-top: 1px solid var(--divider);
  margin-bottom: 32px;
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 860px;
}
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  backdrop-filter: blur(10px) saturate(120%);
  -webkit-backdrop-filter: blur(10px) saturate(120%);
  transition: all .3s ease;
}
.faq-item:hover {
  border-color: rgba(34,211,238,0.3);
}
.faq-item summary {
  padding: 18px 24px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  list-style: none;
  user-select: none;
  transition: background .2s;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::before {
  content: "";
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(14,165,233,0.12);
  border: 1px solid rgba(34,211,238,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--accent);
  transition: all .3s ease;
  flex-shrink: 0;
}
.faq-item[open] summary::before {
  content: "-";
  background: var(--energy);
  color: #04130D;
  border-color: var(--energy);
}
.faq-item summary:not([open])::before {
  content: "+";
}
.faq-answer {
  padding: 0 24px 20px 64px;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.75;
}
.faq-answer p {
  margin-bottom: 8px;
}
.faq-answer p:last-child {
  margin-bottom: 0;
}

/* ========== CTA ========== */
.cta-section {
  position: relative;
  padding: 64px 48px;
  background: linear-gradient(135deg, rgba(8,15,30,0.9), rgba(11,20,36,0.85));
  border: 1px solid var(--card-border);
  border-radius: 24px;
  text-align: center;
  margin-bottom: 64px;
  overflow: hidden;
  backdrop-filter: blur(12px);
}
.cta-section::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,229,154,0.15) 0%, transparent 70%);
  pointer-events: none;
}
.cta-section::after {
  content: "";
  position: absolute;
  bottom: -40px;
  left: -40px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34,211,238,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.cta-section h2 {
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}
.cta-section p {
  font-size: 15px;
  color: var(--text-sub);
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
}
.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all .3s ease;
  line-height: 1.4;
}
.btn-primary {
  background: linear-gradient(135deg, #00E59A 0%, #22D3EE 100%);
  color: #04130D;
  box-shadow: var(--shadow-glow);
}
.btn-primary:hover {
  color: #04130D;
  transform: translateY(-2px);
  box-shadow: 0 0 28px rgba(0,229,154,0.5);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 0 12px rgba(0,229,154,0.3);
}
.btn-primary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.btn-outline {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(34,211,238,0.4);
  color: var(--text-main);
}
.btn-outline:hover {
  background: rgba(34,211,238,0.08);
  border-color: var(--accent);
  color: var(--text-main);
  transform: translateY(-2px);
}
.btn-outline:active {
  background: rgba(34,211,238,0.12);
  transform: translateY(0);
}
.btn-outline:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ========== 页脚 ========== */
.site-footer {
  border-top: 1px solid var(--divider);
  background: rgba(6,12,24,0.5);
  padding: 48px 56px 24px;
  margin-top: auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 0.8fr 0.8fr;
  gap: 40px;
  max-width: 1240px;
  margin: 0 auto 36px;
}
.footer-brand h3 {
  font-size: 20px;
  color: var(--text-main);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.75;
  max-width: 400px;
}
.footer-col h4 {
  font-size: 16px;
  color: var(--text-main);
  font-weight: 600;
  margin-bottom: 14px;
}
.footer-col a {
  display: flex;
  align-items: center;
  font-size: 14px;
  color: var(--text-sub);
  margin-bottom: 10px;
  transition: color .2s ease;
}
.footer-col a:hover {
  color: var(--accent);
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 20px;
  border-top: 1px solid var(--divider);
  max-width: 1240px;
  margin: 0 auto;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-weak);
}

/* ========== 移动端顶栏 ========== */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(8,16,31,0.96);
  border-bottom: 1px solid var(--divider);
  z-index: 999;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  backdrop-filter: blur(10px);
}
.menu-toggle {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-main);
  font-size: 18px;
  transition: background .2s;
}
.menu-toggle:hover {
  background: rgba(255,255,255,0.06);
}
.mobile-brand {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-main);
}
.mobile-cta {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border-radius: var(--radius-btn);
  background: linear-gradient(135deg, var(--energy), var(--accent));
  color: #04130D;
  font-size: 13px;
  font-weight: 600;
  transition: all .2s ease;
}
.mobile-cta:hover {
  color: #04130D;
  transform: scale(1.03);
}

/* ========== 移动端抽屉 ========== */
.mobile-drawer {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 300px;
  background: #0A1222;
  z-index: 1100;
  transform: translateX(-100%);
  transition: transform .3s ease;
  display: flex;
  flex-direction: column;
  padding: 20px;
  border-right: 1px solid var(--divider);
  box-shadow: 20px 0 50px rgba(0,0,0,0.4);
}
.mobile-drawer.open {
  transform: translateX(0);
}
.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--divider);
  margin-bottom: 20px;
}
.drawer-brand {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-main);
}
.drawer-close {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-sub);
  font-size: 16px;
  transition: background .2s;
}
.drawer-close:hover {
  background: rgba(255,255,255,0.06);
  color: var(--text-main);
}
.drawer-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.drawer-nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 12px;
  border-radius: 12px;
  font-size: 15px;
  color: var(--text-sub);
  border-left: 3px solid transparent;
  transition: all .2s ease;
}
.drawer-nav-item i {
  width: 18px;
  text-align: center;
  color: var(--text-weak);
}
.drawer-nav-item:hover {
  background: rgba(14,165,233,0.08);
  color: var(--text-main);
}
.drawer-nav-item.active {
  background: rgba(14,165,233,0.10);
  border-left-color: var(--energy);
  color: #fff;
  font-weight: 600;
}
.drawer-nav-item.active i {
  color: var(--energy);
}
.drawer-bottom {
  padding-top: 16px;
  border-top: 1px solid var(--divider);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 1050;
  opacity: 0;
  visibility: hidden;
  transition: all .3s ease;
}
.drawer-overlay.show {
  opacity: 1;
  visibility: visible;
}

/* ========== 响应式 ========== */
@media (max-width: 1200px) {
  .page-content {
    padding: 32px 32px 0;
  }
  .site-footer {
    padding: 40px 32px 20px;
  }
}

@media (max-width: 1023px) {
  .side-nav {
    display: none;
  }
  .main-wrapper {
    margin-left: 0;
  }
  .mobile-header {
    display: flex;
  }
  .page-content {
    padding: 84px 20px 0;
  }
  .site-footer {
    padding: 40px 20px 20px;
  }
  .story-section {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .story-visual img {
    max-height: 360px;
  }
  .floating-card {
    left: 16px;
  }
  .timeline-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .value-card:nth-child(2) {
    transform: none;
  }
  .value-card:nth-child(2):hover {
    transform: translateY(-4px);
  }
  .value-card:nth-child(3) {
    grid-column: 1 / -1;
    max-width: 480px;
    margin: 0 auto;
  }
  .stats-section {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
  .cta-section {
    padding: 48px 24px;
  }
  .cta-section h2 {
    font-size: 24px;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }
  .page-header {
    padding: 28px 0 36px;
    margin-bottom: 36px;
  }
  .page-header h1 {
    font-size: 28px;
  }
  .page-subtitle {
    font-size: 14px;
  }
  .section-head h2 {
    font-size: 24px;
  }
  .timeline-grid {
    grid-template-columns: 1fr;
  }
  .values-grid {
    grid-template-columns: 1fr;
  }
  .value-card:nth-child(3) {
    grid-column: auto;
    max-width: none;
    margin: 0;
  }
  .stats-section {
    grid-template-columns: 1fr 1fr;
  }
  .stat-number {
    font-size: 28px;
  }
  .stat-label {
    font-size: 12px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-brand {
    grid-column: auto;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 4px;
  }
  .cta-section {
    padding: 40px 20px;
    margin-bottom: 40px;
  }
  .cta-section h2 {
    font-size: 22px;
  }
  .cta-buttons {
    flex-direction: column;
    gap: 12px;
  }
  .cta-buttons .btn {
    width: calc(100% - 32px);
    margin: 0 16px;
  }
  .floating-card {
    left: 12px;
    bottom: 12px;
    padding: 10px 14px;
  }
  .floating-icon {
    width: 28px;
    height: 28px;
    font-size: 12px;
  }
  .floating-card p {
    font-size: 12px;
  }
  .timeline-card {
    padding: 14px 16px;
  }
  .timeline-year {
    font-size: 22px;
  }
  .faq-item summary {
    padding: 14px 16px;
    font-size: 14px;
  }
  .faq-answer {
    padding: 0 16px 16px 52px;
    font-size: 13px;
  }
  .story-section {
    padding-top: 16px;
  }
  .story-text h2 {
    font-size: 24px;
  }
  .story-text p {
    font-size: 14px;
  }
}

@media (max-width: 520px) {
  .mobile-header {
    padding: 0 12px;
  }
  .mobile-cta {
    padding: 6px 12px;
    font-size: 12px;
  }
  .mobile-drawer {
    width: 280px;
  }
  .stats-section {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .stat-item {
    padding: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    text-align: left;
  }
  .stat-number {
    font-size: 26px;
    margin-bottom: 0;
  }
  .stat-label {
    font-size: 13px;
  }
  .breadcrumb {
    font-size: 12px;
    flex-wrap: wrap;
  }
  .page-header h1 {
    font-size: 24px;
    line-height: 1.35;
  }
  .timeline-grid {
    gap: 16px;
  }
  .story-visual img {
    aspect-ratio: 4/3;
  }
  .cta-section {
    padding: 32px 16px;
  }
  .cta-section p {
    font-size: 14px;
  }
  .btn {
    padding: 12px 24px;
    font-size: 14px;
  }
  .values-grid {
    gap: 20px;
  }
}

/* roulang page: category3 */
:root {
  --bg-dark: #050A14;
  --bg-deep: #0B1424;
  --bg-panel: rgba(8, 15, 30, 0.75);
  --primary: #0EA5E9;
  --deep-primary: #2563EB;
  --energy: #00E59A;
  --cyan: #22D3EE;
  --text: #E8F0F8;
  --text-sub: #94A8C3;
  --text-weak: #5B6D88;
  --card-bg: rgba(255, 255, 255, 0.045);
  --card-border: rgba(255, 255, 255, 0.10);
  --divider: rgba(148, 168, 195, 0.18);
  --radius-card: 18px;
  --radius-btn: 999px;
  --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.35);
  --shadow-cta: 0 0 20px rgba(0, 229, 154, 0.30);
  --font: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans SC", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: radial-gradient(ellipse at 20% 0%, #0B1424 0%, #050A14 58%), var(--bg-dark);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, textarea { font-family: inherit; }
ul, ol { list-style: none; }
.container { max-width: 1240px; margin: 0 auto; padding: 0 40px; }
.section-block { padding: 88px 0; }
.section-block + .section-block { border-top: 1px solid var(--divider); }
.section-title { font-size: 30px; font-weight: 800; letter-spacing: -0.5px; line-height: 1.3; display: flex; align-items: center; gap: 14px; }
.section-title::before { content: ""; width: 4px; height: 26px; background: linear-gradient(180deg, var(--energy), var(--cyan)); border-radius: 4px; flex-shrink: 0; }
.section-sub { color: var(--text-sub); font-size: 15px; margin-top: 10px; max-width: 720px; }

/* 左侧固定导航 */
.side-nav-wrap {
  position: fixed;
  top: 0;
  left: 0;
  width: 248px;
  height: 100vh;
  background: var(--bg-panel);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-right: 1px solid rgba(148, 168, 195, 0.12);
  z-index: 200;
  display: flex;
  flex-direction: column;
}
.brand-area {
  padding: 34px 24px 22px;
  display: flex;
  align-items: center;
  gap: 14px;
  border-bottom: 1px solid var(--divider);
  margin-bottom: 18px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(0, 229, 154, 0.16), rgba(34, 211, 238, 0.10));
  border: 1px solid rgba(0, 229, 154, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--energy);
  font-size: 19px;
  font-weight: 800;
  box-shadow: 0 0 18px rgba(0, 229, 154, 0.15);
  position: relative;
  overflow: hidden;
}
.logo-icon::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  border: 1px dashed rgba(34, 211, 238, 0.3);
}
.brand-text {
  font-size: 21px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 1px;
  line-height: 1.2;
}
.brand-text small {
  display: block;
  font-size: 11px;
  color: var(--text-weak);
  font-weight: 400;
  letter-spacing: 1.2px;
  margin-top: 2px;
}

.side-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 6px 12px;
  flex: 1;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 18px;
  border-radius: 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-sub);
  transition: all 0.25s ease;
  position: relative;
  border: 1px solid transparent;
}
.nav-item i {
  width: 20px;
  text-align: center;
  font-size: 16px;
  color: var(--text-weak);
  transition: color 0.25s ease;
}
.nav-item:hover {
  color: var(--text);
  background: rgba(14, 165, 233, 0.08);
  border-color: rgba(34, 211, 238, 0.12);
}
.nav-item:hover i {
  color: var(--cyan);
}
.nav-item.active {
  color: #fff;
  background: rgba(14, 165, 233, 0.10);
  border-color: rgba(34, 211, 238, 0.20);
  font-weight: 600;
}
.nav-item.active::before {
  content: "";
  position: absolute;
  left: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 24px;
  background: var(--energy);
  border-radius: 0 4px 4px 0;
  box-shadow: 0 0 12px rgba(0, 229, 154, 0.5);
}
.nav-item.active i {
  color: var(--energy);
}

.nav-footer {
  padding: 14px 16px 30px;
  border-top: 1px solid var(--divider);
  margin-top: 10px;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, #00E59A, #22D3EE);
  color: #04130D;
  font-weight: 700;
  font-size: 15px;
  padding: 14px 32px;
  border-radius: var(--radius-btn);
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-cta);
  text-align: center;
  line-height: 1.4;
}
.btn-primary:hover {
  filter: brightness(1.08);
  transform: translateY(-2px);
  box-shadow: 0 0 28px rgba(0, 229, 154, 0.5);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 0 14px rgba(0, 229, 154, 0.3);
}
.btn-primary:focus-visible,
.btn-secondary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}
.btn-block { width: 100%; }
.btn-sm { padding: 10px 20px; font-size: 14px; }
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(34, 211, 238, 0.4);
  color: var(--text);
  font-weight: 600;
  font-size: 15px;
  padding: 14px 32px;
  border-radius: var(--radius-btn);
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
  line-height: 1.4;
}
.btn-secondary:hover {
  border-color: var(--cyan);
  background: rgba(34, 211, 238, 0.08);
  color: #fff;
  transform: translateY(-2px);
}
.btn-secondary:active {
  background: rgba(34, 211, 238, 0.12);
  transform: translateY(0);
}

.service-chips {
  display: flex;
  gap: 10px;
  margin-top: 14px;
}
.service-chips a {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--card-border);
  color: var(--text-sub);
  font-size: 13px;
  transition: all 0.25s ease;
}
.service-chips a:hover {
  color: var(--energy);
  border-color: rgba(0, 229, 154, 0.3);
  background: rgba(0, 229, 154, 0.06);
}

/* 移动端顶部栏 */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: #08101F;
  border-bottom: 1px solid rgba(148, 168, 195, 0.12);
  z-index: 300;
  align-items: center;
  padding: 0 20px;
  gap: 14px;
}
.hamburger {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--card-border);
  color: var(--text);
  font-size: 17px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}
.hamburger:hover {
  background: rgba(14, 165, 233, 0.10);
  border-color: rgba(34, 211, 238, 0.3);
}
.mobile-brand {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 6px;
  margin-right: auto;
}
.mobile-drawer {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 18, 34, 0.95);
  backdrop-filter: blur(20px);
  z-index: 290;
  padding: 84px 24px 40px;
  flex-direction: column;
  overflow-y: auto;
}
.mobile-drawer.open { display: flex; }
.drawer-brand {
  font-size: 20px;
  font-weight: 700;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--divider);
  margin-bottom: 16px;
  color: var(--text);
}
.drawer-nav .nav-item {
  padding: 15px 16px;
  font-size: 16px;
}
.drawer-nav .nav-item.active::before { left: -16px; }
.drawer-footer {
  margin-top: 24px;
  border-top: 1px solid var(--divider);
  padding-top: 20px;
}
.drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 280;
  backdrop-filter: blur(2px);
}
.drawer-overlay.open { display: block; }

/* 主内容区 */
.main-content {
  margin-left: 248px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.page-hero {
  position: relative;
  padding: 72px 56px 56px;
  background:
    linear-gradient(105deg, #050A14 16%, rgba(5, 10, 20, 0.62) 44%, rgba(14, 165, 233, 0.18)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  border-bottom: 1px solid var(--divider);
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(rgba(34, 211, 238, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 211, 238, 0.04) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}
.page-hero .hero-inner {
  position: relative;
  z-index: 2;
  max-width: 1240px;
  margin: 0 auto;
}
.breadcrumb {
  font-size: 13px;
  color: var(--text-weak);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-weak); transition: color 0.2s ease; }
.breadcrumb a:hover { color: var(--cyan); }
.breadcrumb .sep { opacity: 0.5; }
.breadcrumb .current { color: var(--text-sub); }
.page-h1 {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.5px;
  margin-bottom: 14px;
}
.page-h1 .accent {
  background: linear-gradient(135deg, var(--energy), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-desc {
  font-size: 16px;
  color: var(--text-sub);
  max-width: 720px;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 32px;
  flex-wrap: wrap;
}

/* 图文引导区 */
.about-split {
  display: grid;
  grid-template-columns: 45% 55%;
  gap: 48px;
  align-items: center;
  padding: 96px 56px;
}
.about-split-left .section-title { font-size: 28px; }
.about-split-left p {
  color: var(--text-sub);
  font-size: 15px;
  margin-top: 20px;
  line-height: 1.8;
}
.about-split-left p + p { margin-top: 12px; }
.about-split-right {
  position: relative;
}
.about-split-right .img-wrap {
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--card-border);
  margin-left: 24px;
}
.about-split-right .img-wrap img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.about-split-right:hover .img-wrap img { transform: scale(1.02); }
.float-card {
  position: absolute;
  right: -14px;
  bottom: -22px;
  background: rgba(10, 18, 30, 0.85);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(34, 211, 238, 0.25);
  border-radius: 16px;
  padding: 18px 22px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 260px;
}
.float-card .icon-circle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(0, 229, 154, 0.12);
  border: 1px solid rgba(0, 229, 154, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--energy);
  font-size: 16px;
  flex-shrink: 0;
}
.float-card p {
  font-size: 13px;
  color: var(--text);
  line-height: 1.5;
  font-weight: 500;
}
.float-card p small {
  display: block;
  color: var(--text-sub);
  font-weight: 400;
  margin-top: 2px;
}

/* 服务卡片 */
.service-section {
  padding: 88px 56px;
  background: linear-gradient(180deg, rgba(14, 165, 233, 0.04), transparent 40%);
}
.service-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 40px;
}
.service-card {
  background: var(--card-bg);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  padding: 26px 26px 28px;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}
.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 90px;
  height: 90px;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.08), transparent 70%);
  pointer-events: none;
}
.service-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 48px;
  background: linear-gradient(180deg, var(--energy), transparent);
  border-radius: 0 4px 4px 0;
  opacity: 0.7;
  transition: opacity 0.3s ease;
}
.service-card:hover {
  transform: translateY(-4px);
  border-color: rgba(34, 211, 238, 0.45);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.45);
}
.service-card:hover::after { opacity: 1; }
.service-card.featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 20px;
  align-items: center;
}
.service-card.featured .service-icon {
  width: 54px;
  height: 54px;
  font-size: 22px;
}
.service-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(0, 229, 154, 0.12), rgba(34, 211, 238, 0.08));
  border: 1px solid rgba(34, 211, 238, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--energy);
  font-size: 20px;
  margin-bottom: 16px;
  transition: all 0.3s ease;
}
.service-card:hover .service-icon {
  border-color: rgba(0, 229, 154, 0.4);
  box-shadow: 0 0 18px rgba(0, 229, 154, 0.12);
}
.service-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
.service-card p { color: var(--text-sub); font-size: 14px; line-height: 1.7; }

/* 流程区块 */
.steps-section { padding: 88px 56px; }
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 44px;
  counter-reset: steps;
}
.step-item {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  padding: 28px 22px;
  position: relative;
  transition: all 0.3s ease;
}
.step-item:hover {
  border-color: rgba(34, 211, 238, 0.35);
  transform: translateY(-4px);
}
.step-num {
  font-size: 34px;
  font-weight: 800;
  color: transparent;
  -webkit-text-stroke: 1px rgba(0, 229, 154, 0.5);
  line-height: 1;
  margin-bottom: 14px;
}
.step-item h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.step-item p { font-size: 13px; color: var(--text-sub); line-height: 1.7; }
.step-line {
  position: absolute;
  top: 38px;
  right: -20px;
  width: 20px;
  height: 2px;
  background: linear-gradient(90deg, rgba(0, 229, 154, 0.4), transparent);
}
.step-item:last-child .step-line { display: none; }

/* 数据带 */
.stats-band {
  padding: 72px 56px;
  background: linear-gradient(180deg, rgba(0, 229, 154, 0.05), transparent 70%);
  border-top: 1px solid var(--divider);
  border-bottom: 1px solid var(--divider);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.stat-item {
  text-align: center;
  padding: 28px 16px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  transition: all 0.3s ease;
}
.stat-item:hover {
  border-color: rgba(0, 229, 154, 0.3);
  transform: translateY(-3px);
}
.stat-num {
  font-size: 40px;
  font-weight: 800;
  color: var(--energy);
  line-height: 1.2;
  letter-spacing: -1px;
  font-variant-numeric: tabular-nums;
}
.stat-label {
  font-size: 13px;
  color: var(--text-weak);
  margin-top: 8px;
}
.stat-icon {
  font-size: 20px;
  color: var(--cyan);
  margin-bottom: 10px;
}

/* FAQ */
.faq-section {
  padding: 88px 56px;
  max-width: 980px;
}
.faq-list {
  margin-top: 36px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  overflow: hidden;
  transition: border-color 0.3s ease;
}
.faq-item[open] {
  border-color: rgba(34, 211, 238, 0.3);
}
.faq-item summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 22px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  list-style: none;
  transition: color 0.2s ease;
  position: relative;
  user-select: none;
}
.faq-item summary:hover { color: var(--cyan); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(14, 165, 233, 0.10);
  border: 1px solid rgba(34, 211, 238, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 400;
  color: var(--cyan);
  margin-left: auto;
  flex-shrink: 0;
  transition: all 0.3s ease;
}
.faq-item[open] summary::after {
  content: "−";
  background: rgba(0, 229, 154, 0.12);
  border-color: rgba(0, 229, 154, 0.3);
  color: var(--energy);
}
.faq-answer {
  padding: 4px 22px 20px 52px;
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.8;
  background: rgba(10, 18, 30, 0.4);
}
.faq-answer p + p { margin-top: 8px; }

/* CTA 横幅 */
.cta-banner {
  padding: 72px 56px;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 80% 120%, rgba(0, 229, 154, 0.08), transparent 50%),
    radial-gradient(ellipse at 10% 0%, rgba(34, 211, 238, 0.06), transparent 40%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-top: 1px solid var(--divider);
}
.cta-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(5, 10, 20, 0.85) 30%, rgba(5, 10, 20, 0.4));
  pointer-events: none;
}
.cta-inner {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}
.cta-inner h2 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 12px;
}
.cta-inner > p {
  color: var(--text-sub);
  font-size: 15px;
  margin-bottom: 30px;
}
.cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* 页脚 */
.site-footer {
  padding: 56px 56px 28px;
  background: rgba(5, 10, 20, 0.6);
  border-top: 1px solid var(--divider);
  margin-top: auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  max-width: 1240px;
  margin: 0 auto;
}
.footer-brand h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  margin-bottom: 14px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
  max-width: 400px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}
.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--text-sub);
  padding: 6px 0;
  transition: all 0.2s ease;
}
.footer-col a:hover {
  color: var(--cyan);
  padding-left: 4px;
}
.footer-bottom {
  max-width: 1240px;
  margin: 36px auto 0;
  padding-top: 22px;
  border-top: 1px solid var(--divider);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-weak);
}

/* 响应式 */
@media (max-width: 1240px) {
  .container { padding: 0 32px; }
  .page-hero, .about-split, .service-section,
  .steps-section, .stats-band, .faq-section, .cta-banner,
  .site-footer { padding-left: 40px; padding-right: 40px; }
}

@media (max-width: 1023px) {
  .side-nav-wrap { display: none; }
  .main-content { margin-left: 0; }
  .mobile-header { display: flex; }
  .page-hero {
    padding: 96px 24px 48px;
  }
  .about-split {
    grid-template-columns: 1fr;
    padding: 64px 24px;
    gap: 32px;
  }
  .about-split-right .img-wrap { margin-left: 0; }
  .about-split-right .img-wrap img { height: 320px; }
  .service-section, .steps-section, .stats-band, .faq-section, .cta-banner {
    padding: 64px 24px;
  }
  .steps-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .step-line { display: none; }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .site-footer { padding: 48px 24px 24px; }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .page-h1 { font-size: 30px; }
  .hero-actions .btn-primary,
  .hero-actions .btn-secondary {
    width: 100%;
    max-width: none;
  }
  .btn-primary, .btn-secondary { padding: 13px 24px; }
  .section-title { font-size: 25px; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card.featured { grid-template-columns: 1fr; gap: 4px; }
  .service-card.featured .service-icon { margin-bottom: 12px; }
  .steps-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .stat-num { font-size: 34px; }
  .cta-inner h2 { font-size: 28px; }
  .cta-actions .btn-primary,
  .cta-actions .btn-secondary {
    width: 100%;
    max-width: none;
  }
  .about-split {
    padding: 56px 20px;
  }
  .float-card {
    right: 8px;
    bottom: -18px;
  }
}

@media (max-width: 520px) {
  .mobile-header { padding: 0 16px; }
  .mobile-brand .fa-fish { display: none; }
  .page-hero { padding: 84px 18px 40px; }
  .service-section, .steps-section, .stats-band, .faq-section, .cta-banner {
    padding: 52px 18px;
  }
  .faq-item summary { font-size: 15px; padding: 18px 16px; }
  .faq-answer { padding: 4px 16px 16px 30px; font-size: 14px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}