/* roulang page: index */
/* ===== Design Tokens ===== */
:root{
  --c-primary:#0B1F3A;
  --c-primary-light:#16345A;
  --c-primary-grad:linear-gradient(135deg,#0B1F3A 0%,#14325A 55%,#1D4B79 100%);
  --c-accent:#00B4D8;
  --c-accent-2:#06D6A0;
  --c-accent-grad:linear-gradient(135deg,#00B4D8 0%,#06D6A0 100%);
  --c-accent-soft:rgba(0,180,216,.1);
  --c-accent-softer:rgba(0,180,216,.06);
  --c-warm:#FFB703;
  --c-bg:#F6F8FB;
  --c-card:#FFFFFF;
  --c-text:#0B1F3A;
  --c-text-body:#334155;
  --c-text-muted:#64748B;
  --c-border:#E5E7EB;
  --c-dark-border:rgba(255,255,255,.12);
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --sh-sm:0 4px 12px rgba(2,12,27,.06);
  --sh-md:0 12px 24px rgba(2,12,27,.10);
  --sh-lg:0 20px 44px rgba(2,12,27,.16);
  --sp-xs:8px;
  --sp-sm:16px;
  --sp-md:24px;
  --sp-lg:40px;
  --sp-xl:64px;
  --sp-xxl:96px;
  --container:1200px;
  --font-sans:'PingFang SC','Microsoft YaHei','Noto Sans SC','Inter','Helvetica Neue',Arial,sans-serif;
  --transition:all .25s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font-sans);
  background:var(--c-bg);
  color:var(--c-text-body);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;}
a{text-decoration:none;color:inherit;transition:var(--transition);}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:3px solid rgba(0,180,216,.45);
  outline-offset:2px;
  border-radius:4px;
}
ul,ol{list-style:none;}
button{font-family:inherit;cursor:pointer;background:none;border:none;}
input{font-family:inherit;border:none;outline:none;background:none;}

.container{max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 28px;
  border-radius:12px;
  font-size:15px;
  font-weight:600;
  line-height:1.4;
  cursor:pointer;
  transition:var(--transition);
  white-space:nowrap;
}
.btn-sm{padding:9px 22px;font-size:14px;border-radius:10px;}
.btn-lg{padding:16px 44px;font-size:17px;border-radius:var(--r-pill);}
.btn-primary{
  background:var(--c-accent-grad);
  color:#fff;
  box-shadow:0 6px 16px rgba(0,180,216,.25);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 10px 26px rgba(0,180,216,.38);
  filter:brightness(1.06);
  color:#fff;
}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(0,180,216,.22);}
.btn-ghost{
  background:transparent;
  color:#fff;
  border:1.5px solid rgba(255,255,255,.75);
}
.btn-ghost:hover{
  background:rgba(255,255,255,.12);
  border-color:#fff;
  color:#fff;
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(0);}
.btn-outline{
  background:var(--c-card);
  color:var(--c-primary);
  border:1.5px solid var(--c-accent);
}
.btn-outline:hover{
  background:var(--c-accent-soft);
  color:var(--c-primary);
  transform:translateY(-2px);
  box-shadow:var(--sh-sm);
}
.btn-outline:active{transform:translateY(0);}
.btn-white{
  background:#fff;
  color:var(--c-primary);
  box-shadow:0 8px 28px rgba(0,0,0,.18);
}
.btn-white:hover{
  transform:translateY(-2px);
  box-shadow:0 14px 36px rgba(0,0,0,.24);
  color:var(--c-primary);
}
.btn-white:active{transform:translateY(0);}

/* ===== Section Helpers ===== */
.section{padding:var(--sp-xxl) 0;}
.section-light{background:var(--c-card);}
.section-gray{background:var(--c-bg);}
.section-head{
  text-align:center;
  max-width:720px;
  margin:0 auto var(--sp-xl);
  padding:0 16px;
}
.section-tag{
  display:inline-block;
  padding:6px 16px;
  background:var(--c-accent-soft);
  color:var(--c-accent);
  border-radius:var(--r-pill);
  font-size:13px;
  font-weight:600;
  letter-spacing:.4px;
  margin-bottom:16px;
}
.section-tag-warm{
  background:rgba(255,183,3,.12);
  color:var(--c-warm);
}
.section-title{
  font-size:34px;
  font-weight:800;
  color:var(--c-text);
  line-height:1.3;
  letter-spacing:-.5px;
  margin-bottom:14px;
}
.section-desc{
  font-size:16px;
  color:var(--c-text-muted);
  line-height:1.8;
}

/* ===== Header ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(229,231,235,.8);
  box-shadow:0 2px 12px rgba(2,12,27,.04);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:36px;
  height:74px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-icon{
  width:36px;
  height:36px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  background:var(--c-primary);
  box-shadow:0 4px 12px rgba(11,31,58,.35);
}
.brand-name{
  font-size:21px;
  font-weight:800;
  color:var(--c-text);
  letter-spacing:-.3px;
  display:flex;
  align-items:center;
  gap:5px;
}
.brand-name .en{color:var(--c-accent);}
.brand-suffix{
  font-size:11px;
  font-weight:600;
  background:linear-gradient(135deg,#00B4D8,#06D6A0);
  color:#fff;
  border-radius:6px;
  padding:3px 7px;
  margin-left:2px;
  letter-spacing:1px;
}
.main-nav{
  flex:1;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.nav-links{
  display:flex;
  gap:6px;
}
.nav-link{
  position:relative;
  padding:10px 16px;
  font-size:15px;
  font-weight:500;
  color:var(--c-text-body);
  border-radius:8px;
  transition:var(--transition);
}
.nav-link::after{
  content:'';
  position:absolute;
  left:16px;
  right:16px;
  bottom:4px;
  height:2px;
  background:var(--c-accent-grad);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .28s ease;
}
.nav-link:hover{
  color:var(--c-primary);
  background:var(--c-accent-softer);
}
.nav-link:hover::after,.nav-link.active::after{
  transform:scaleX(1);
}
.nav-link.active{
  color:var(--c-primary);
  font-weight:600;
}
.header-actions{
  display:flex;
  align-items:center;
  gap:14px;
  flex-shrink:0;
}
.search-box{
  display:flex;
  align-items:center;
  gap:8px;
  background:#F2F5F9;
  border:1px solid transparent;
  border-radius:var(--r-pill);
  padding:8px 16px;
  width:190px;
  transition:var(--transition);
}
.search-box:focus-within{
  border-color:var(--c-accent);
  background:#fff;
  box-shadow:0 0 0 3px rgba(0,180,216,.12);
  width:220px;
}
.search-icon{width:16px;height:16px;color:var(--c-text-muted);flex-shrink:0;}
.search-box input{
  width:100%;
  font-size:14px;
  color:var(--c-text);
  background:transparent;
}
.search-box input::placeholder{color:var(--c-text-muted);}
.search-box input::-webkit-search-cancel-button{display:none;}
.btn-login{
  font-size:14px;
  font-weight:500;
  color:var(--c-text-body);
  padding:8px 12px;
  border-radius:8px;
}
.btn-login:hover{color:var(--c-accent);background:var(--c-accent-softer);}
.hamburger{
  display:none;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  width:42px;
  height:42px;
  border-radius:10px;
  background:var(--c-accent-softer);
  gap:5px;
  flex-shrink:0;
  transition:var(--transition);
}
.hamburger span{
  display:block;
  width:20px;
  height:2px;
  border-radius:2px;
  background:var(--c-text);
  transition:var(--transition);
}
.hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger.active span:nth-child(2){opacity:0;}
.hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ===== Hero ===== */
.hero{
  position:relative;
  min-height:75vh;
  display:flex;
  align-items:center;
  background:var(--c-primary-grad);
  overflow:hidden;
  isolation:isolate;
}
.hero-bg{
  position:absolute;
  inset:0;
  z-index:-2;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  opacity:.22;
}
.hero-overlay{
  position:absolute;
  inset:0;
  z-index:-1;
  background:
    linear-gradient(90deg, rgba(11,31,58,.96) 0%, rgba(11,31,58,.86) 55%, rgba(16,45,69,.72) 100%),
    radial-gradient(ellipse at 70% 50%, rgba(0,180,216,.16) 0%, transparent 55%);
}
.hero::before{
  content:'';
  position:absolute;
  inset:0;
  z-index:-1;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size:60px 60px;
  pointer-events:none;
}
.hero-wave{
  position:absolute;
  right:-120px;
  bottom:-120px;
  width:480px;
  height:480px;
  border-radius:50%;
  border:1px solid rgba(0,180,216,.22);
  pointer-events:none;
  z-index:-1;
}
.hero-wave::before,.hero-wave::after{
  content:'';
  position:absolute;
  inset:60px;
  border-radius:50%;
  border:1px solid rgba(0,180,216,.16);
}
.hero-wave::after{
  inset:130px;
  border-color:rgba(6,214,160,.14);
}
.hero-inner{
  display:grid;
  grid-template-columns:1.25fr .75fr;
  gap:64px;
  align-items:center;
  padding:88px 24px;
  width:100%;
  max-width:var(--container);
  margin:0 auto;
}
.hero-content{
  max-width:680px;
}
.hero-h1{
  font-size:44px;
  font-weight:800;
  color:#fff;
  line-height:1.28;
  letter-spacing:-.5px;
  margin-bottom:22px;
}
.hero-h1 .highlight{
  color:transparent;
  background:linear-gradient(135deg,#00B4D8,#06D6A0);
  -webkit-background-clip:text;
  background-clip:text;
}
.hero-subtitle{
  font-size:18px;
  line-height:1.8;
  color:rgba(255,255,255,.78);
  margin-bottom:34px;
  max-width:540px;
}
.hero-actions{
  display:flex;
  gap:16px;
  flex-wrap:wrap;
}
.hero-badges{
  display:flex;
  flex-direction:column;
  gap:18px;
}
.badge-item{
  display:flex;
  align-items:center;
  gap:18px;
  background:rgba(255,255,255,.09);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-pill);
  padding:18px 26px;
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  box-shadow:0 10px 32px rgba(0,0,0,.18);
  transition:var(--transition);
}
.badge-item:hover{
  transform:translateX(6px);
  background:rgba(255,255,255,.14);
  border-color:rgba(0,180,216,.35);
}
.badge-icon{
  width:44px;
  height:44px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  background:rgba(0,180,216,.16);
  flex-shrink:0;
}
.badge-number{
  font-size:28px;
  font-weight:800;
  color:#fff;
  line-height:1;
  letter-spacing:-.5px;
}
.badge-number em{
  font-style:normal;
  color:var(--c-accent);
}
.badge-label{
  font-size:14px;
  color:rgba(255,255,255,.72);
  line-height:1.4;
  margin-top:3px;
}

/* ===== Stats Band ===== */
.stats-band{
  background:var(--c-card);
  border-bottom:1px solid var(--c-border);
  padding:52px 0;
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:32px;
  text-align:center;
}
.stat-item{
  position:relative;
  padding:8px 0;
}
.stat-item + .stat-item::before{
  content:'';
  position:absolute;
  left:-16px;
  top:20%;
  bottom:20%;
  width:1px;
  background:var(--c-border);
}
.stat-number{
  font-size:36px;
  font-weight:800;
  color:var(--c-primary);
  letter-spacing:-1px;
  line-height:1;
}
.stat-number span{color:var(--c-accent);}
.stat-label{
  font-size:14px;
  color:var(--c-text-muted);
  margin-top:8px;
  font-weight:500;
}

/* ===== Timeline ===== */
.timeline-section{
  position:relative;
  background:var(--c-bg);
  overflow:hidden;
}
.timeline{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:26px;
  position:relative;
}
.timeline::before{
  content:'';
  position:absolute;
  top:36px;
  left:6%;
  right:6%;
  height:2px;
  background:linear-gradient(90deg,var(--c-accent) 0%,var(--c-accent-2) 100%);
  opacity:.3;
  border-radius:2px;
}
.timeline-item{
  position:relative;
  background:var(--c-card);
  border-radius:var(--r-md);
  padding:28px 24px 24px;
  box-shadow:var(--sh-sm);
  border:1px solid var(--c-border);
  transition:var(--transition);
  text-align:left;
}
.timeline-item:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-md);
  border-color:rgba(0,180,216,.35);
}
.timeline-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:42px;
  height:42px;
  border-radius:50%;
  background:var(--c-accent-grad);
  color:#fff;
  font-size:15px;
  font-weight:800;
  margin-bottom:18px;
  position:relative;
  box-shadow:0 6px 16px rgba(0,180,216,.3);
}
.timeline-title{
  font-size:18px;
  font-weight:700;
  color:var(--c-text);
  margin-bottom:8px;
}
.timeline-desc{
  font-size:14px;
  color:var(--c-text-muted);
  line-height:1.7;
}

/* ===== Features ===== */
.features-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:26px;
}
.feature-card{
  position:relative;
  background:var(--c-card);
  border:1px solid var(--c-border);
  border-radius:var(--r-md);
  padding:32px 28px 28px;
  box-shadow:var(--sh-sm);
  overflow:hidden;
  transition:var(--transition);
}
.feature-card::before{
  content:'';
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:4px;
  background:var(--c-accent-grad);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .3s ease;
}
.feature-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--sh-md);
}
.feature-card:hover::before{
  transform:scaleX(1);
}
.feature-card.has-image{
  padding:0;
}
.feature-card-media{
  position:relative;
  height:200px;
  overflow:hidden;
}
.feature-card-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .45s ease;
}
.feature-card:hover .feature-card-media img{
  transform:scale(1.05);
}
.feature-card-media .media-tag{
  position:absolute;
  left:16px;
  bottom:16px;
  background:rgba(11,31,58,.82);
  color:#fff;
  font-size:12px;
  font-weight:600;
  padding:6px 14px;
  border-radius:var(--r-pill);
  backdrop-filter:blur(6px);
}
.feature-card-body{
  padding:28px;
}
.feature-icon{
  width:50px;
  height:50px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:14px;
  background:var(--c-accent-soft);
  margin-bottom:18px;
  transition:var(--transition);
}
.feature-card:hover .feature-icon{
  background:var(--c-accent-grad);
  transform:scale(1.05);
}
.feature-card:hover .feature-icon svg path,
.feature-card:hover .feature-icon svg circle,
.feature-card:hover .feature-icon svg line{
  stroke:#fff;
}
.feature-title{
  font-size:19px;
  font-weight:700;
  color:var(--c-text);
  margin-bottom:10px;
}
.feature-desc{
  font-size:14px;
  color:var(--c-text-muted);
  line-height:1.75;
}

/* ===== Plans ===== */
.plans-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:26px;
  align-items:stretch;
}
.plan-card{
  display:flex;
  flex-direction:column;
  background:var(--c-card);
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  padding:38px 32px;
  box-shadow:var(--sh-sm);
  transition:var(--transition);
  position:relative;
}
.plan-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--sh-md);
}
.plan-card.featured{
  background:var(--c-primary);
  border-color:var(--c-primary);
  padding:46px 34px;
  box-shadow:0 18px 40px rgba(11,31,58,.35);
}
.plan-card.featured:hover{
  transform:translateY(-8px) scale(1.02);
  box-shadow:0 24px 52px rgba(11,31,58,.42);
}
.plan-badge{
  position:absolute;
  top:-14px;
  left:50%;
  transform:translateX(-50%);
  background:var(--c-accent-grad);
  color:#fff;
  font-size:12px;
  font-weight:700;
  padding:6px 18px;
  border-radius:var(--r-pill);
  box-shadow:0 6px 16px rgba(0,180,216,.35);
  letter-spacing:.5px;
}
.plan-name{
  font-size:22px;
  font-weight:800;
  color:var(--c-text);
  margin-bottom:4px;
}
.featured .plan-name{color:#fff;}
.plan-target{
  font-size:13px;
  color:var(--c-text-muted);
  margin-bottom:22px;
  font-weight:500;
}
.featured .plan-target{color:rgba(255,255,255,.65);}
.plan-price{
  font-size:34px;
  font-weight:800;
  color:var(--c-primary);
  margin-bottom:26px;
  letter-spacing:-1px;
}
.featured .plan-price{color:var(--c-accent);}
.plan-price small{
  font-size:14px;
  font-weight:500;
  color:var(--c-text-muted);
  margin-left:4px;
  letter-spacing:0;
}
.featured .plan-price small{color:rgba(255,255,255,.6);}
.plan-list{
  flex:1;
  margin-bottom:28px;
}
.plan-list li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14px;
  color:var(--c-text-body);
  padding:7px 0;
  line-height:1.6;
}
.featured .plan-list li{color:rgba(255,255,255,.85);}
.plan-check{
  width:18px;
  height:18px;
  border-radius:50%;
  background:var(--c-accent-soft);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
  margin-top:3px;
}
.featured .plan-check{
  background:rgba(0,214,160,.2);
}
.plan-check svg{width:10px;height:10px;color:var(--c-accent);}
.featured .plan-check svg{color:var(--c-accent-2);}
.plan-cta{
  width:100%;
}

/* ===== News ===== */
.news-section{
  background:var(--c-bg);
}
.news-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:26px;
}
.news-card{
  background:var(--c-card);
  border-radius:var(--r-md);
  border:1px solid var(--c-border);
  box-shadow:var(--sh-sm);
  overflow:hidden;
  transition:var(--transition);
  display:flex;
  flex-direction:column;
}
.news-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--sh-md);
  border-color:rgba(0,180,216,.3);
}
.news-media{
  position:relative;
  height:185px;
  overflow:hidden;
  background:var(--c-bg);
}
.news-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .45s ease;
}
.news-card:hover .news-media img{
  transform:scale(1.06);
}
.news-body{
  display:flex;
  flex-direction:column;
  flex:1;
  padding:22px 24px 20px;
}
.tag{
  display:inline-block;
  padding:5px 14px;
  background:var(--c-accent-soft);
  color:var(--c-accent);
  font-size:12px;
  font-weight:600;
  border-radius:var(--r-pill);
  align-self:flex-start;
  margin-bottom:12px;
  transition:var(--transition);
}
.news-card:hover .tag{
  background:var(--c-accent-grad);
  color:#fff;
}
.news-title{
  font-size:17px;
  font-weight:700;
  color:var(--c-text);
  line-height:1.5;
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-excerpt{
  font-size:13px;
  color:var(--c-text-muted);
  line-height:1.7;
  flex:1;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:14px;
}
.news-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  border-top:1px solid #F0F2F6;
  padding-top:13px;
}
.news-date{
  font-size:12px;
  color:var(--c-text-muted);
  display:flex;
  align-items:center;
  gap:6px;
}
.news-date svg{width:13px;height:13px;}
.read-more{
  font-size:13px;
  font-weight:600;
  color:var(--c-accent);
}
.read-more:hover{
  color:var(--c-accent-2);
}
.news-empty{
  grid-column:1/-1;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:16px;
  padding:80px 0;
  background:var(--c-card);
  border:1px dashed var(--c-border);
  border-radius:var(--r-md);
  color:var(--c-text-muted);
  font-size:15px;
}
.news-empty-icon{
  width:56px;
  height:56px;
  border-radius:50%;
  background:var(--c-bg);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--c-text-muted);
}
.news-empty-icon svg{width:24px;height:24px;}

/* ===== FAQ ===== */
.faq-list{
  max-width:820px;
  margin:0 auto;
}
.faq-item{
  background:var(--c-card);
  border:1px solid var(--c-border);
  border-radius:var(--r-md);
  margin-bottom:16px;
  overflow:hidden;
  box-shadow:var(--sh-sm);
  transition:var(--transition);
}
.faq-item:hover{
  border-color:rgba(0,180,216,.28);
  box-shadow:var(--sh-md);
}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:22px 26px;
  font-size:16px;
  font-weight:600;
  color:var(--c-text);
  cursor:pointer;
  list-style:none;
  transition:var(--transition);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:'＋';
  font-size:20px;
  font-weight:400;
  color:var(--c-accent);
  transition:transform .3s ease;
  flex-shrink:0;
}
.faq-item[open] summary::after{
  transform:rotate(45deg);
}
.faq-item[open] summary{
  color:var(--c-accent);
}
.faq-answer{
  padding:0 26px 24px;
  color:var(--c-text-body);
  font-size:14px;
  line-height:1.9;
  border-top:1px solid #F0F2F6;
  margin:0 26px 0;
  padding-top:12px;
  padding-left:0;
  padding-right:0;
}

/* ===== CTA ===== */
.cta-section{
  position:relative;
  background:var(--c-primary-grad);
  padding:96px 0;
  overflow:hidden;
  text-align:center;
  isolation:isolate;
}
.cta-section::before{
  content:'';
  position:absolute;
  inset:0;
  z-index:-1;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  opacity:.16;
}
.cta-section::after{
  content:'';
  position:absolute;
  width:420px;
  height:420px;
  border-radius:50%;
  border:1px solid rgba(0,180,216,.2);
  top:-100px;
  right:-100px;
  z-index:-1;
  box-shadow:
    0 0 0 70px rgba(0,180,216,.05),
    0 0 0 140px rgba(0,180,216,.03);
}
.cta-title{
  font-size:36px;
  font-weight:800;
  color:#fff;
  letter-spacing:-.5px;
  line-height:1.35;
  margin-bottom:16px;
}
.cta-desc{
  font-size:16px;
  color:rgba(255,255,255,.75);
  max-width:560px;
  margin:0 auto 36px;
  line-height:1.8;
}
.cta-actions{
  display:flex;
  gap:18px;
  justify-content:center;
  flex-wrap:wrap;
}

/* ===== Footer ===== */
.site-footer{
  background:var(--c-primary);
  color:rgba(255,255,255,.72);
  padding-top:72px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1.2fr;
  gap:56px;
  padding-bottom:56px;
}
.footer-brand .brand{
  margin-bottom:16px;
}
.footer-brand .brand-name{
  color:#fff;
  font-size:22px;
}
.footer-brand .brand-suffix{
  background:var(--c-accent-grad);
}
.footer-about{
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.62);
  max-width:340px;
  margin-top:16px;
}
.footer-title{
  font-size:16px;
  font-weight:700;
  color:#fff;
  margin-bottom:22px;
  position:relative;
  padding-bottom:10px;
}
.footer-title::after{
  content:'';
  position:absolute;
  left:0;
  bottom:0;
  width:28px;
  height:2px;
  background:var(--c-accent-grad);
  border-radius:2px;
}
.footer-links li{
  margin-bottom:10px;
}
.footer-links a{
  font-size:14px;
  color:rgba(255,255,255,.66);
  transition:var(--transition);
  position:relative;
  padding-left:14px;
}
.footer-links a::before{
  content:'›';
  position:absolute;
  left:0;
  color:var(--c-accent);
  font-weight:700;
}
.footer-links a:hover{
  color:#fff;
  padding-left:18px;
}
.footer-contact li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14px;
  color:rgba(255,255,255,.66);
  margin-bottom:13px;
  line-height:1.7;
}
.footer-contact .f-icon{
  flex-shrink:0;
  color:var(--c-accent);
  margin-top:2px;
}
.footer-contact a{
  color:rgba(255,255,255,.66);
}
.footer-contact a:hover{color:#fff;}
.icp-placeholder{
  display:block;
  font-size:12px;
  color:rgba(255,255,255,.42);
  margin-top:12px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:24px 0;
  text-align:center;
}
.footer-bottom .copyright{
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ===== Responsive ===== */
@media (max-width:1023px){
  .header-inner{gap:20px;}
  .search-box{width:150px;}
  .search-box:focus-within{width:170px;}
  .nav-link{padding:10px 10px;font-size:14px;}
  .btn-login{display:none;}
  .btn-sm{padding:9px 16px;}
  .hero-inner{
    grid-template-columns:1fr;
    gap:40px;
    padding:60px 24px 70px;
  }
  .hero-badges{
    flex-direction:row;
    flex-wrap:wrap;
    justify-content:center;
  }
  .hero-content{text-align:center;margin:0 auto;}
  .hero-actions{justify-content:center;}
  .hero-subtitle{margin-left:auto;margin-right:auto;}
  .hero-h1{font-size:38px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:24px;}
  .stat-item + .stat-item::before{display:none;}
  .timeline{grid-template-columns:repeat(2,1fr);gap:20px;}
  .timeline::before{display:none;}
  .features-grid{grid-template-columns:repeat(2,1fr);gap:22px;}
  .plans-grid{grid-template-columns:1fr;gap:24px;max-width:560px;margin:0 auto;}
  .plan-card.featured{padding:38px 32px;}
  .news-grid{grid-template-columns:repeat(2,1fr);gap:22px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
}
@media (max-width:767px){
  .section{padding:56px 0;}
  .section-title{font-size:27px;}
  .section-desc{font-size:15px;}
  .section-head{margin-bottom:36px;}
  .site-header{position:sticky;}
  .header-inner{height:64px;gap:12px;position:relative;}
  .brand-icon{width:32px;height:32px;border-radius:8px;}
  .brand-name{font-size:19px;}
  .header-actions{display:none;}
  .hamburger{display:flex;}
  .main-nav{
    display:none;
    position:absolute;
    top:64px;
    left:0;
    right:0;
    background:#fff;
    flex-direction:column;
    align-items:stretch;
    padding:20px 24px;
    border-bottom:1px solid var(--c-border);
    box-shadow:0 18px 32px rgba(2,12,27,.12);
    z-index:999;
    border-radius:0 0 20px 20px;
  }
  .main-nav.open{
    display:flex;
    animation:fadeInDown .3s ease;
  }
  @keyframes fadeInDown{
    from{opacity:0;transform:translateY(-12px);}
    to{opacity:1;transform:translateY(0);}
  }
  .nav-links{
    flex-direction:column;
    gap:4px;
    margin-bottom:18px;
  }
  .nav-link{
    padding:12px 14px;
    font-size:16px;
    border-radius:10px;
    border-bottom:1px solid #F2F5F9;
  }
  .nav-link:last-child{border-bottom:none;}
  .nav-link::after{display:none;}
  .nav-link:hover,.nav-link.active{
    background:var(--c-accent-softer);
    color:var(--c-primary);
  }
  .nav-mobile-actions{
    display:flex;
    flex-direction:column;
    gap:12px;
  }
  .nav-mobile-actions .search-box{
    width:100%;
    background:#F2F5F9;
    border-radius:10px;
  }
  .nav-mobile-actions .search-box:focus-within{width:100%;}
  .nav-mobile-btns{
    display:flex;
    gap:12px;
  }
  .nav-mobile-btns .btn{
    flex:1;
    justify-content:center;
  }
  .btn-login{
    display:inline-flex;
    justify-content:center;
    border:1px solid var(--c-border);
    background:#fff;
  }
  .hero{min-height:72vh;padding-bottom:20px;}
  .hero-inner{
    grid-template-columns:1fr;
    gap:36px;
    padding:48px 20px 54px;
  }
  .hero-h1{
    font-size:30px;
    line-height:1.35;
  }
  .hero-subtitle{
    font-size:15px;
    line-height:1.8;
    margin-bottom:26px;
  }
  .hero-actions{
    flex-direction:column;
    align-items:stretch;
  }
  .hero-actions .btn{width:100%;}
  .hero-badges{
    flex-direction:column;
    gap:14px;
  }
  .badge-item{
    padding:14px 20px;
  }
  .badge-number{font-size:24px;}
  .badge-label{font-size:13px;}
  .stats-grid{
    grid-template-columns:repeat(2,1fr);
    gap:28px 16px;
    padding:0 8px;
  }
  .stat-number{font-size:28px;}
  .timeline{
    grid-template-columns:1fr;
    gap:18px;
  }
  .timeline-item{
    padding:22px 20px;
  }
  .features-grid{
    grid-template-columns:1fr;
    gap:18px;
  }
  .feature-card{
    padding:26px 22px;
  }
  .plans-grid{
    grid-template-columns:1fr;
    gap:28px;
    max-width:420px;
  }
  .plan-card,.plan-card.featured{
    padding:32px 24px;
  }
  .news-grid{
    grid-template-columns:1fr;
    gap:18px;
  }
  .news-media{height:170px;}
  .news-title{font-size:16px;}
  .faq-item summary{
    padding:18px 20px;
    font-size:15px;
    line-height:1.5;
  }
  .faq-answer{
    margin:0 20px;
    padding:12px 0 20px;
    font-size:14px;
  }
  .cta-section{padding:64px 0;}
  .cta-title{font-size:27px;}
  .cta-desc{font-size:15px;padding:0 20px;}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;}
  .footer-grid{
    grid-template-columns:1fr;
    gap:36px;
    padding-bottom:40px;
  }
  .footer-brand .brand{justify-content:center;}
  .footer-title{text-align:left;}
  .footer-about{max-width:100%;}
}
@media (max-width:480px){
  .container{padding:0 16px;}
  .hero-h1{font-size:26px;}
  .badge-item{padding:12px 16px;}
  .badge-icon{width:36px;height:36px;}
  .feature-card-media{height:160px;}
  .stats-grid{gap:24px 14px;}
  .nav-mobile-btns{flex-direction:column;}
}

/* roulang page: category1 */
:root {
  --primary: #0B1F3A;
  --primary-2: #102A43;
  --accent: #00B4D8;
  --accent-2: #06D6A0;
  --warm: #FFB703;
  --bg: #F4F7FB;
  --card: #FFFFFF;
  --text: #1E2A3A;
  --muted: #5B6B7F;
  --border: #E3E9F0;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 2px 8px rgba(2, 12, 27, 0.06);
  --shadow-md: 0 8px 24px rgba(2, 12, 27, 0.08);
  --shadow-lg: 0 16px 40px rgba(2, 12, 27, 0.12);
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, "Segoe UI", Arial, sans-serif;
  --space-sm: 16px;
  --space-md: 32px;
  --space-lg: 64px;
  --space-xl: 96px;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input {
  font-family: inherit;
  outline: none;
}

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

/* ===================== Header ===================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, rgba(0, 180, 216, 0.12), rgba(6, 214, 160, 0.12));
  border-radius: 10px;
  border: 1px solid rgba(0, 180, 216, 0.25);
}

.brand-name {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.3px;
}

.brand-name .en {
  color: var(--accent);
  font-style: normal;
}

.brand-name .brand-suffix {
  font-size: 13px;
  font-weight: 600;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  margin-left: 4px;
  letter-spacing: 1px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  position: relative;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--muted);
  border-radius: 8px;
  transition: color 0.2s, background 0.2s;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  opacity: 0;
  transform: scaleX(0.4);
  transition: opacity 0.2s, transform 0.2s;
}

.nav-link:hover {
  color: var(--primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  opacity: 1;
  transform: scaleX(1);
}

.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}

.nav-mobile-actions {
  display: none;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 12px;
  width: 16px;
  height: 16px;
  color: var(--muted);
  pointer-events: none;
}

.search-box input {
  width: 180px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0 14px 0 36px;
  font-size: 14px;
  color: var(--text);
  background: #F1F5F9;
  transition: width 0.25s ease, border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.search-box input::placeholder {
  color: #94A3B8;
}

.search-box input:focus {
  width: 216px;
  border-color: var(--accent);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.14);
}

.btn-login {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  padding: 8px 4px;
  transition: color 0.2s;
}

.btn-login:hover {
  color: var(--accent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  border-radius: 10px;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.btn-sm {
  height: 38px;
  padding: 0 20px;
  font-size: 14px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #164067 60%, var(--accent));
  color: #fff;
  box-shadow: 0 4px 14px rgba(0, 180, 216, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 180, 216, 0.35);
  filter: brightness(1.08);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(0, 180, 216, 0.25);
}

.btn-ghost-light {
  border: 1px solid rgba(255, 255, 255, 0.55);
  color: #fff;
  background: transparent;
}

.btn-ghost-light:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
}

.btn-ghost {
  border: 1px solid rgba(0, 180, 216, 0.6);
  color: var(--accent);
  background: transparent;
}

.btn-ghost:hover {
  background: rgba(0, 180, 216, 0.08);
  border-color: var(--accent);
}

.btn-white {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 8px 30px rgba(255, 255, 255, 0.2);
}

.btn-white:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 40px rgba(255, 255, 255, 0.28);
  filter: brightness(0.98);
}

.btn-lg {
  height: 52px;
  padding: 0 40px;
  font-size: 16px;
  border-radius: 999px;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  padding: 10px;
  background: #F1F5F9;
}

.hamburger span {
  display: block;
  height: 2px;
  width: 22px;
  border-radius: 2px;
  background: var(--primary);
  transition: transform 0.3s, opacity 0.3s;
}

.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===================== Page KV ===================== */
.page-hero {
  position: relative;
  background-color: var(--primary);
  background-image: linear-gradient(135deg, rgba(11, 31, 58, 0.88), rgba(16, 42, 67, 0.78)), url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  color: #fff;
  padding: 80px 0 96px;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  top: -60%;
  right: -20%;
  width: 640px;
  height: 640px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 180, 216, 0.18), transparent 65%);
  pointer-events: none;
}

.page-hero::after {
  content: "";
  position: absolute;
  bottom: -80px;
  left: 10%;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(6, 214, 160, 0.12), transparent 70%);
  pointer-events: none;
}

.page-hero .container {
  position: relative;
  z-index: 2;
  max-width: 900px;
  text-align: center;
}

.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 24px;
}

.breadcrumb a:hover {
  color: #fff;
}

.breadcrumb span {
  color: rgba(255, 255, 255, 0.9);
}

.page-hero h1 {
  font-size: 44px;
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.25;
  margin-bottom: 18px;
}

.page-hero h1 .gradient-text {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.page-hero .lead {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.82);
  max-width: 640px;
  margin: 0 auto 36px;
  line-height: 1.8;
}

.hero-btns {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 56px;
  flex-wrap: wrap;
}

.stat-badge {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 140px;
  padding: 16px 22px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 18px;
  backdrop-filter: blur(6px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.stat-badge strong {
  font-size: 30px;
  font-weight: 800;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  letter-spacing: -0.5px;
}

.stat-badge span {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.72);
  margin-top: 2px;
}

/* ===================== Section Common ===================== */
.section {
  padding: var(--space-xl) 0;
}

.section-soft {
  background: #FFFFFF;
}

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto var(--space-lg);
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(0, 180, 216, 0.08);
  border: 1px solid rgba(0, 180, 216, 0.16);
  border-radius: 999px;
  padding: 5px 16px;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}

.section-head h2 {
  font-size: 34px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
  line-height: 1.3;
  margin-bottom: 14px;
}

.section-head p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.75;
}

/* ===================== Capability Cards ===================== */
.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.cap-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
  position: relative;
  overflow: hidden;
}

.cap-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.cap-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(0, 180, 216, 0.3);
}

.cap-card:hover::before {
  transform: scaleX(1);
}

.cap-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(0, 180, 216, 0.1), rgba(6, 214, 160, 0.1));
  border: 1px solid rgba(0, 180, 216, 0.18);
  margin-bottom: 20px;
  color: var(--accent);
}

.cap-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}

.cap-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
}

/* ===================== Scenario Cards ===================== */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.scenario-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 36px 32px;
  display: flex;
  gap: 20px;
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}

.scenario-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0, 180, 216, 0.25);
}

.scenario-num {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  color: var(--accent);
  background: rgba(0, 180, 216, 0.08);
  border-radius: 12px;
  border: 1px solid rgba(0, 180, 216, 0.16);
}

.scenario-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.scenario-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
}

/* ===================== Process Timeline ===================== */
.process-section {
  background: var(--primary);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.process-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, transparent, rgba(0, 180, 216, 0.35), rgba(6, 214, 160, 0.35), transparent);
  opacity: 0.5;
}

.process-section .section-tag {
  color: var(--warm);
  background: rgba(255, 183, 3, 0.1);
  border-color: rgba(255, 183, 3, 0.25);
}

.process-section .section-head h2 {
  color: #fff;
}

.process-section .section-head p {
  color: rgba(255, 255, 255, 0.6);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

.process-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  transition: transform 0.25s, background 0.25s, border-color 0.25s;
  position: relative;
}

.process-card:hover {
  transform: translateY(-8px);
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.22);
}

.process-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: var(--primary);
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 18px;
  box-shadow: 0 0 0 6px rgba(0, 180, 216, 0.15), 0 6px 20px rgba(0, 180, 216, 0.3);
}

.process-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.process-card p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.65;
}

/* ===================== Plan Compare ===================== */
.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.plan-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 34px;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}

.plan-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(0, 180, 216, 0.3);
}

.plan-card.featured {
  background: linear-gradient(150deg, var(--primary), var(--primary-2) 70%);
  border-color: transparent;
  color: #fff;
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.plan-card.featured::before {
  content: "";
  position: absolute;
  top: -40px;
  right: -40px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 180, 216, 0.22), transparent 70%);
}

.plan-card.featured:hover {
  transform: scale(1.04);
  box-shadow: 0 20px 50px rgba(2, 12, 27, 0.24);
}

.plan-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--warm);
  background: rgba(255, 183, 3, 0.1);
  border: 1px solid rgba(255, 183, 3, 0.25);
  border-radius: 999px;
  padding: 4px 14px;
  margin-bottom: 14px;
  align-self: flex-start;
  letter-spacing: 0.5px;
}

.plan-card h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 6px;
}

.plan-card.featured h3 {
  color: #fff;
}

.plan-price {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 24px;
}

.plan-card.featured .plan-price {
  color: rgba(255, 255, 255, 0.65);
}

.plan-list {
  list-style: none;
  margin-bottom: 32px;
  flex-grow: 1;
}

.plan-list li {
  position: relative;
  padding: 7px 0 7px 26px;
  font-size: 14px;
  color: var(--text);
  line-height: 1.6;
}

.plan-card.featured .plan-list li {
  color: rgba(255, 255, 255, 0.85);
}

.plan-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 15px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.12);
}

.plan-card.featured .plan-list li::before {
  background: var(--warm);
  box-shadow: 0 0 0 3px rgba(255, 183, 3, 0.18);
}

.plan-card .btn {
  width: 100%;
}

/* ===================== Service Cards Grid (coverpic) ===================== */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(0, 180, 216, 0.25);
}

.service-cover {
  position: relative;
  height: 220px;
  overflow: hidden;
}

.service-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.service-card:hover .service-cover img {
  transform: scale(1.05);
}

.service-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(11, 31, 58, 0.35));
}

.service-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  font-size: 12px;
  font-weight: 600;
  color: #fff;
  background: rgba(11, 31, 58, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(6px);
  padding: 4px 14px;
  border-radius: 999px;
  letter-spacing: 0.3px;
}

.service-body {
  padding: 26px 24px 10px;
}

.service-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.service-body p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 12px;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  padding-bottom: 18px;
  transition: gap 0.2s, color 0.2s;
}

.service-link:hover {
  gap: 10px;
  color: var(--primary);
}

.service-link svg {
  transition: transform 0.2s;
}

/* ===================== FAQ ===================== */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.faq-item:hover {
  border-color: rgba(0, 180, 216, 0.28);
}

.faq-item.open {
  border-color: rgba(0, 180, 216, 0.35);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 22px 26px;
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  text-align: left;
  background: transparent;
  transition: color 0.2s;
}

.faq-question:hover {
  color: var(--accent);
}

.faq-icon {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(0, 180, 216, 0.08);
  border: 1px solid rgba(0, 180, 216, 0.16);
  transition: transform 0.3s, background 0.3s;
  color: var(--accent);
}

.faq-icon svg {
  width: 14px;
  height: 14px;
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
  background: rgba(0, 180, 216, 0.14);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.32s ease, padding 0.32s ease;
}

.faq-item.open .faq-answer {
  max-height: 240px;
}

.faq-answer p {
  padding: 0 26px 24px;
  font-size: 15px;
  color: var(--muted);
  line-height: 1.8;
  border-top: 1px solid var(--border);
  padding-top: 18px;
}

/* ===================== CTA ===================== */
.cta-banner {
  position: relative;
  background: linear-gradient(135deg, var(--primary), var(--primary-2) 65%, #0E3B52);
  color: #fff;
  text-align: center;
  padding: 88px 0;
  overflow: hidden;
}

.cta-banner::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 640px;
  height: 640px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.07);
  pointer-events: none;
}

.cta-banner::after {
  content: "";
  position: absolute;
  top: -60px;
  right: 15%;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 180, 216, 0.12), transparent 70%);
  pointer-events: none;
}

.cta-banner .container {
  position: relative;
  z-index: 2;
}

.cta-banner h2 {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}

.cta-banner p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 36px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-banner .btn-lg {
  padding: 0 56px;
}

/* ===================== Footer ===================== */
.site-footer {
  background: var(--primary);
  color: rgba(255, 255, 255, 0.7);
  padding: 72px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 1fr;
  gap: 48px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .brand {
  margin-bottom: 16px;
}

.footer-brand .brand-name {
  color: #fff;
}

.footer-brand .brand-name .en {
  color: var(--accent);
}

.footer-about {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  max-width: 340px;
  margin-bottom: 20px;
}

.icp-placeholder {
  display: inline-block;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.35);
}

.footer-title {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.2s, padding-left 0.2s;
}

.footer-links a:hover {
  color: var(--accent);
  padding-left: 6px;
}

.footer-contact {
  list-style: none;
}

.footer-contact li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 16px;
  line-height: 1.5;
}

.footer-contact a {
  color: rgba(255, 255, 255, 0.65);
}

.footer-contact a:hover {
  color: var(--accent);
}

.f-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--accent);
}

.footer-bottom {
  text-align: center;
  padding: 24px 0 28px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.35);
}

.footer-bottom strong {
  color: rgba(255, 255, 255, 0.5);
  font-weight: 600;
}

/* ===================== Responsive ===================== */
@media (max-width: 1024px) {
  .capability-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .process-section::before {
    display: none;
  }

  .scenario-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .plan-grid {
    grid-template-columns: repeat(1, 1fr);
    max-width: 560px;
    margin: 0 auto;
  }

  .plan-card.featured {
    transform: none;
    order: -1;
  }

  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .header-actions {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 20px 24px 28px;
    box-shadow: 0 20px 40px rgba(2, 12, 27, 0.12);
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    transition: transform 0.3s ease;
    max-height: calc(100vh - 72px);
    overflow-y: auto;
  }

  .main-nav.open {
    transform: translateY(0);
  }

  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .nav-link {
    padding: 12px 16px;
    font-size: 16px;
  }

  .nav-link::after {
    display: none;
  }

  .nav-link.active {
    background: rgba(0, 180, 216, 0.06);
  }

  .nav-mobile-actions {
    display: block;
    margin-top: 16px;
  }

  .search-box input {
    width: 100%;
  }

  .search-box input:focus {
    width: 100%;
  }

  .nav-mobile-btns {
    display: flex;
    gap: 12px;
    margin-top: 16px;
  }

  .btn-login {
    padding: 10px 20px;
    border: 1px solid var(--border);
    border-radius: 10px;
    text-align: center;
    flex: 1;
  }

  .nav-mobile-btns .btn {
    flex: 1;
  }
}

@media (max-width: 767px) {
  .container {
    padding: 0 18px;
  }

  .page-hero {
    padding: 60px 0 72px;
  }

  .page-hero h1 {
    font-size: 30px;
  }

  .page-hero .lead {
    font-size: 15px;
  }

  .hero-stats {
    gap: 10px;
  }

  .stat-badge {
    min-width: 100px;
    padding: 14px 16px;
  }

  .stat-badge strong {
    font-size: 24px;
  }

  .stat-badge span {
    font-size: 12px;
  }

  .section {
    padding: 56px 0;
  }

  .section-head {
    margin-bottom: 40px;
  }

  .section-head h2 {
    font-size: 26px;
  }

  .capability-grid,
  .scenario-grid,
  .service-grid {
    grid-template-columns: 1fr;
  }

  .process-grid {
    grid-template-columns: 1fr;
  }

  .cap-card {
    padding: 26px 22px;
  }

  .scenario-card {
    padding: 24px 20px;
    flex-direction: column;
    gap: 14px;
  }

  .service-cover {
    height: 190px;
  }

  .plan-card {
    padding: 30px 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .cta-banner {
    padding: 64px 0;
  }

  .cta-banner h2 {
    font-size: 26px;
  }

  .page-hero .hero-btns .btn {
    width: calc(50% - 8px);
  }
}

@media (max-width: 480px) {
  .page-hero h1 {
    font-size: 26px;
  }

  .section-head h2 {
    font-size: 24px;
  }

  .stat-badge {
    min-width: 88px;
    padding: 12px 12px;
  }

  .stat-badge strong {
    font-size: 20px;
  }

  .stat-badge span {
    font-size: 11px;
  }

  .cap-card h3,
  .scenario-card h3,
  .service-body h3 {
    font-size: 17px;
  }

  .faq-question {
    font-size: 15px;
    padding: 18px 20px;
  }

  .faq-answer p {
    padding: 0 20px 20px;
    font-size: 14px;
  }
}

/* roulang page: article */
:root {
  --primary-dark: #0B1F3A;
  --primary-darker: #071526;
  --signal-cyan: #00B4D8;
  --signal-green: #06D6A0;
  --accent-amber: #FFB703;
  --bg-main: #F6F8FB;
  --bg-white: #FFFFFF;
  --text-main: #334155;
  --text-dark: #102A43;
  --text-weak: #7B8CA6;
  --border-light: #E5E7EB;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-card: 0 4px 12px rgba(2, 12, 27, 0.06);
  --shadow-hover: 0 12px 24px rgba(2, 12, 27, 0.10);
  --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Inter", Arial, sans-serif;
  --space-section: 80px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-stack);
  background: var(--bg-main);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
input, button, textarea { font-family: inherit; }
button { cursor: pointer; border: none; background: none; color: inherit; }
.container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
:focus-visible { outline: 2px solid var(--signal-cyan); outline-offset: 2px; border-radius: 4px; }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
}
.header-inner { display: flex; align-items: center; height: 72px; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-icon {
  width: 38px; height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, #0B1F3A, #123B5C);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 10px rgba(0, 180, 216, 0.18);
}
.brand-name { font-size: 20px; font-weight: 800; color: var(--primary-dark); letter-spacing: 0.4px; }
.brand-name .en { color: var(--signal-cyan); }
.brand-suffix { font-size: 12px; font-weight: 600; color: var(--signal-green); margin-left: 2px; vertical-align: super; letter-spacing: 1px; }
.main-nav { flex: 1; display: flex; align-items: center; justify-content: space-between; }
.nav-links { display: flex; gap: 32px; }
.nav-link {
  font-size: 15px; font-weight: 500; color: #3F506E;
  padding: 8px 2px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
  position: relative;
}
.nav-link:hover { color: var(--signal-cyan); border-bottom-color: var(--signal-cyan); }
.nav-link.active { color: var(--primary-dark); border-bottom-color: var(--signal-cyan); font-weight: 600; }
.header-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.search-box { position: relative; display: flex; align-items: center; }
.search-icon { position: absolute; left: 12px; width: 16px; height: 16px; color: #9AA8B8; pointer-events: none; }
.search-box input {
  width: 180px; height: 40px;
  border-radius: 20px;
  border: 1px solid var(--border-light);
  background: #F2F5F9;
  padding: 0 16px 0 36px;
  font-size: 14px;
  color: var(--text-main);
  transition: all 0.25s ease;
}
.search-box input::placeholder { color: #A5B2C3; }
.search-box input:focus {
  outline: none;
  border-color: var(--signal-cyan);
  background: #FFFFFF;
  width: 215px;
  box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.12);
}
.btn-login { font-size: 14px; color: var(--text-dark); font-weight: 500; padding: 8px 10px; border-radius: 8px; transition: color 0.2s, background 0.2s; }
.btn-login:hover { color: var(--signal-cyan); background: rgba(0, 180, 216, 0.08); }
.btn-login:active { transform: scale(0.97); }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  border-radius: var(--radius-md);
  padding: 12px 24px;
  font-size: 15px; font-weight: 600;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  white-space: nowrap;
}
.btn-sm { padding: 9px 18px; font-size: 14px; }
.btn-primary {
  background: linear-gradient(135deg, var(--primary-dark), var(--signal-cyan));
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(0, 180, 216, 0.22);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 22px rgba(0, 180, 216, 0.32);
  filter: brightness(1.08);
}
.btn-primary:active { transform: translateY(0); box-shadow: 0 4px 10px rgba(0, 180, 216, 0.2); }
.btn-ghost {
  border: 1.5px solid var(--signal-cyan);
  color: var(--signal-cyan);
  background: transparent;
}
.btn-ghost:hover {
  background: rgba(0, 180, 216, 0.08);
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(0, 180, 216, 0.14);
}
.btn-ghost:active { transform: translateY(0); }
.hamburger { display: none; flex-direction: column; gap: 5px; width: 40px; height: 40px; align-items: center; justify-content: center; border-radius: 8px; transition: background 0.2s; }
.hamburger:hover { background: rgba(0, 180, 216, 0.08); }
.hamburger span { width: 20px; height: 2px; background: var(--text-dark); border-radius: 2px; transition: transform 0.3s ease, opacity 0.3s ease; }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.nav-mobile-actions { display: none; }

/* ===== Breadcrumb ===== */
.breadcrumb-bar {
  background: #F1F5F9;
  border-bottom: 1px solid var(--border-light);
  padding: 14px 0;
  font-size: 13px;
  color: var(--text-weak);
}
.breadcrumb-bar .container { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.breadcrumb-bar a { color: var(--signal-cyan); font-weight: 500; transition: color 0.2s; }
.breadcrumb-bar a:hover { color: var(--signal-green); text-decoration: underline; }
.breadcrumb-sep { color: #C0C9D6; margin: 0 2px; }
.breadcrumb-current { color: #64748B; font-weight: 500; max-width: 360px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ===== Article Header ===== */
.article-header { padding: 52px 0 10px; }
.article-header h1 {
  font-size: 42px;
  line-height: 1.3;
  font-weight: 800;
  color: var(--primary-dark);
  max-width: 920px;
  letter-spacing: -0.4px;
}
.article-meta { display: flex; align-items: center; gap: 16px; margin-top: 24px; flex-wrap: wrap; }
.article-tag {
  display: inline-flex; align-items: center;
  padding: 5px 14px;
  border-radius: 999px;
  background: rgba(0, 180, 216, 0.10);
  color: var(--signal-cyan);
  font-size: 13px; font-weight: 600;
}
.article-date, .article-author { font-size: 14px; color: var(--text-weak); display: inline-flex; align-items: center; gap: 6px; }
.article-divider { height: 1px; background: var(--border-light); margin-top: 32px; }

/* ===== Cover ===== */
.article-cover { margin: 32px auto 0; max-width: 1240px; }
.article-cover img { width: 100%; max-height: 480px; object-fit: cover; border-radius: var(--radius-lg); box-shadow: var(--shadow-card); }

/* ===== Article Body ===== */
.article-body { padding: 44px 0 64px; }
.article-content {
  max-width: 800px;
  margin: 0 auto;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 52px 56px;
  box-shadow: var(--shadow-card);
  font-size: 16.5px;
  line-height: 1.95;
  color: var(--text-main);
}
.article-content p { margin-bottom: 1.6em; }
.article-content h2 {
  font-size: 26px; font-weight: 700; color: var(--primary-dark);
  margin: 2em 0 0.85em;
  padding-left: 16px;
  border-left: 4px solid var(--signal-cyan);
  line-height: 1.4;
}
.article-content h3 { font-size: 20px; font-weight: 600; color: var(--text-dark); margin: 1.6em 0 0.7em; line-height: 1.5; }
.article-content img { border-radius: var(--radius-md); margin: 1.6em 0; }
.article-content blockquote {
  border-left: 4px solid var(--signal-green);
  background: #F6F8FB;
  padding: 18px 24px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.6em 0;
  color: #4B5A6C;
  font-style: normal;
}
.article-content ul, .article-content ol { margin: 1em 0 1.6em; padding-left: 1.7em; }
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin-bottom: 0.6em; }
.article-content li::marker { color: var(--signal-cyan); }
.article-content a { color: var(--signal-cyan); font-weight: 500; border-bottom: 1px solid transparent; transition: color 0.2s, border-color 0.2s; }
.article-content a:hover { color: var(--signal-green); border-bottom-color: var(--signal-green); }
.article-content strong { color: var(--text-dark); font-weight: 700; }
.article-content code { background: #F1F5F9; padding: 2px 8px; border-radius: 6px; font-size: 14px; color: #0F766E; }
.article-content pre { background: #0E1E38; color: #D7E4F5; padding: 22px 24px; border-radius: var(--radius-md); overflow-x: auto; margin: 1.6em 0; line-height: 1.7; }
.article-content pre code { background: transparent; color: inherit; padding: 0; font-size: 14px; }

/* ===== Not Found ===== */
.notfound-box {
  max-width: 800px;
  margin: 40px auto 0;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 72px 40px;
  text-align: center;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-light);
}
.notfound-box svg { color: #C0CBD9; margin-bottom: 18px; }
.notfound-box p { font-size: 18px; color: var(--text-weak); margin-bottom: 28px; }

/* ===== Related ===== */
.related-section {
  background: var(--bg-white);
  border-top: 1px solid var(--border-light);
  padding: 64px 0 72px;
}
.related-head { margin-bottom: 32px; }
.related-head h2 { font-size: 32px; font-weight: 700; color: var(--primary-dark); position: relative; padding-bottom: 14px; }
.related-head h2::after { content: ""; display: block; width: 48px; height: 4px; border-radius: 2px; background: linear-gradient(90deg, var(--signal-cyan), var(--signal-green)); margin-top: 10px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: rgba(0, 180, 216, 0.4); }
.related-card:active { transform: translateY(-2px); }
.related-thumb { aspect-ratio: 16 / 9; overflow: hidden; background: #E8EEF5; }
.related-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.related-card:hover .related-thumb img { transform: scale(1.04); }
.tag {
  display: inline-flex; align-items: center;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(0, 180, 216, 0.10);
  color: var(--signal-cyan);
  font-size: 12px; font-weight: 600;
  line-height: 1.4;
  align-self: flex-start;
}
.related-info { padding: 22px 22px 24px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.related-info h3 { font-size: 17px; font-weight: 600; color: var(--text-dark); line-height: 1.55; transition: color 0.2s; }
.related-card:hover .related-info h3 { color: var(--signal-cyan); }
.related-time { font-size: 13px; color: var(--text-weak); margin-top: auto; display: flex; align-items: center; gap: 6px; }
.back-btn-wrap { margin-top: 40px; }

/* ===== Footer ===== */
.site-footer { background: var(--primary-darker); color: rgba(255, 255, 255, 0.75); padding-top: 64px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1.4fr; gap: 48px; padding-bottom: 48px; }
.footer-brand .brand .brand-name { color: #EAF2F8; }
.footer-brand .brand .en { color: var(--signal-cyan); }
.footer-about { font-size: 14px; line-height: 1.9; margin-top: 20px; max-width: 360px; color: rgba(255, 255, 255, 0.62); }
.icp-placeholder { display: inline-block; margin-top: 20px; font-size: 12px; color: rgba(255, 255, 255, 0.35); }
.footer-title { font-size: 16px; font-weight: 600; color: #FFFFFF; margin-bottom: 18px; letter-spacing: 0.5px; }
.footer-links { display: flex; flex-direction: column; gap: 12px; }
.footer-links a { font-size: 14px; color: rgba(255, 255, 255, 0.62); transition: color 0.2s, padding-left 0.2s; }
.footer-links a:hover { color: var(--signal-cyan); padding-left: 6px; }
.footer-contact { display: flex; flex-direction: column; gap: 14px; }
.footer-contact li { display: flex; align-items: center; gap: 12px; font-size: 14px; color: rgba(255, 255, 255, 0.62); }
.footer-contact a { color: rgba(255, 255, 255, 0.62); transition: color 0.2s; }
.footer-contact a:hover { color: var(--signal-cyan); }
.f-icon {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: rgba(0, 180, 216, 0.12);
  display: flex; align-items: center; justify-content: center;
  color: var(--signal-cyan);
  flex-shrink: 0;
}
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.08); padding: 20px 0; font-size: 13px; color: rgba(255, 255, 255, 0.38); text-align: center; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .header-inner { gap: 16px; }
  .nav-links { gap: 18px; }
  .search-box input { width: 150px; }
  .search-box input:focus { width: 170px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .article-header h1 { font-size: 36px; }
}
@media (max-width: 800px) {
  .container { padding: 0 16px; }
  .header-inner { height: 64px; }
  .hamburger { display: flex; }
  .header-actions { display: none; }
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding: 24px 20px 32px;
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    z-index: 98;
    border-top: 1px solid var(--border-light);
  }
  .main-nav.open { transform: translateX(0); }
  .nav-links { flex-direction: column; gap: 2px; }
  .nav-link { font-size: 17px; padding: 14px 4px; border-bottom: 1px solid #EEF1F5; border-left: 3px solid transparent; border-radius: 0; }
  .nav-link:hover { color: var(--signal-cyan); border-left-color: var(--signal-cyan); border-bottom-color: #EEF1F5; }
  .nav-link.active { color: var(--signal-cyan); border-left-color: var(--signal-cyan); font-weight: 600; }
  .nav-mobile-actions { display: flex; flex-direction: column; gap: 16px; margin-top: 28px; padding-top: 20px; border-top: 1px solid #EEF1F5; }
  .nav-mobile-actions .search-box input { width: 100%; }
  .nav-mobile-actions .btn-login { text-align: center; padding: 10px; }
  .nav-mobile-actions .btn-primary { width: 100%; }
  body.menu-open { overflow: hidden; }
  .article-header { padding-top: 36px; }
  .article-header h1 { font-size: 30px; }
  .article-content { padding: 32px 24px; border-radius: var(--radius-md); }
  .related-section { padding: 48px 0 56px; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .site-footer { padding-top: 48px; }
  .footer-bottom { text-align: center; }
}
@media (max-width: 520px) {
  .article-header h1 { font-size: 26px; }
  .breadcrumb-current { max-width: 200px; }
  .article-meta { gap: 10px; }
  .article-date, .article-author { font-size: 13px; }
  .related-info { padding: 18px 16px 20px; }
  .related-info h3 { font-size: 16px; }
  .related-head h2 { font-size: 26px; }
  .notfound-box { padding: 52px 20px; }
}

/* roulang page: category2 */
:root{
  --primary:#0B1F3A;
  --primary-2:#102A43;
  --accent:#00B4D8;
  --accent-2:#06D6A0;
  --warm:#FFB703;
  --bg:#F6F8FB;
  --white:#FFFFFF;
  --text:#334155;
  --muted:#64748B;
  --border:#E5E7EB;
  --radius-sm:8px;
  --radius-md:14px;
  --radius-lg:22px;
  --shadow-sm:0 4px 12px rgba(2,12,27,0.06);
  --shadow-md:0 12px 28px rgba(2,12,27,0.10);
  --shadow-hero:0 20px 50px rgba(2,12,27,0.28);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --space-sm:24px;
  --space-md:56px;
  --space-lg:88px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:all .25s ease}
button{font-family:inherit;cursor:pointer;border:none;background:none}
ul,ol{list-style:none}
input{font-family:inherit}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:600;line-height:1;
  padding:12px 24px;border-radius:12px;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease;
  white-space:nowrap;
}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:10px}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;
  box-shadow:0 6px 16px rgba(0,180,216,0.25);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 12px 26px rgba(0,180,216,0.38);
  filter:brightness(1.06);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 12px rgba(0,180,216,0.2)}
.btn-outline{
  background:transparent;color:var(--accent);
  border:1px solid rgba(0,180,216,0.65);
}
.btn-outline:hover{background:rgba(0,180,216,0.10);transform:translateY(-2px)}
.btn-outline:active{transform:translateY(0)}
.btn-ghost{
  background:transparent;color:var(--accent);
  border:1px solid var(--accent);
}
.btn-ghost:hover{background:rgba(0,180,216,0.08)}
.btn-white{
  background:#fff;color:var(--primary);
  border-radius:999px;padding:14px 38px;
  font-size:16px;font-weight:600;
  box-shadow:0 8px 24px rgba(2,12,27,0.16);
}
.btn-white:hover{transform:translateY(-3px);box-shadow:0 16px 36px rgba(2,12,27,0.22)}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,0.92);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(135deg,rgba(0,180,216,0.16),rgba(6,214,160,0.16));
  border:1px solid rgba(0,180,216,0.3);
}
.brand-name{
  font-size:21px;font-weight:800;color:var(--primary);
  letter-spacing:.5px;line-height:1;
}
.brand-name .en{font-weight:800;color:var(--accent)}
.brand-suffix{
  font-size:12px;font-weight:500;color:var(--muted);
  background:var(--bg);border:1px solid var(--border);
  padding:3px 8px;border-radius:999px;margin-left:6px;
  letter-spacing:1px;
}
.main-nav{display:flex;align-items:center;gap:20px;flex:1;justify-content:center}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;padding:10px 16px;font-size:15px;font-weight:500;
  color:var(--text);border-radius:9px;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;
  height:2px;border-radius:2px;background:linear-gradient(90deg,var(--accent),var(--accent-2));
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-link:hover{color:var(--accent)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--accent);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.search-box{
  display:flex;align-items:center;gap:8px;
  background:var(--bg);border:1px solid var(--border);
  border-radius:999px;padding:8px 14px;width:190px;
  transition:border-color .25s ease,box-shadow .25s ease,width .25s ease;
}
.search-box:focus-within{
  border-color:var(--accent);box-shadow:0 0 0 3px rgba(0,180,216,0.14);
  width:210px;
}
.search-icon{width:16px;height:16px;color:var(--muted);flex-shrink:0}
.search-box input{
  border:none;background:transparent;outline:none;
  width:100%;font-size:14px;color:var(--text);
}
.search-box input::placeholder{color:var(--muted)}
.btn-login{
  font-size:14px;font-weight:600;color:var(--text);
  padding:9px 12px;border-radius:9px;
}
.btn-login:hover{color:var(--accent);background:rgba(0,180,216,0.06)}
.hamburger{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;border-radius:10px;
  background:var(--bg);border:1px solid var(--border);
  align-items:center;
}
.hamburger span{
  display:block;width:20px;height:2px;border-radius:2px;
  background:var(--primary);transition:transform .3s ease,opacity .3s ease;
}
.hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-mobile-actions{display:none}

/* ===== Hero ===== */
.hero{
  position:relative;
  background:linear-gradient(135deg,#071527 0%,#0B1F3A 55%,#16324A 100%);
  background-image:linear-gradient(135deg,rgba(7,21,39,0.94),rgba(11,31,58,0.86),rgba(22,50,74,0.90)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  padding:120px 0 100px;color:#fff;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(circle at 20% 30%,rgba(0,180,216,0.18),transparent 42%),
    linear-gradient(rgba(255,255,255,0.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,0.05) 1px,transparent 1px);
  background-size:auto,44px 44px,44px 44px;
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2}
.hero-kicker{
  display:inline-flex;align-items:center;gap:10px;
  background:rgba(255,255,255,0.10);
  border:1px solid rgba(255,255,255,0.16);
  border-radius:999px;padding:8px 18px;
  font-size:14px;font-weight:500;color:rgba(255,255,255,0.92);
  margin-bottom:28px;backdrop-filter:blur(6px);
}
.hero-kicker .dot{width:7px;height:7px;border-radius:50%;background:var(--accent-2);box-shadow:0 0 12px rgba(6,214,160,0.8)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:center}
.hero-copy{max-width:640px}
.hero-title{
  font-size:46px;line-height:1.2;font-weight:800;
  color:#fff;letter-spacing:1px;margin-bottom:22px;
}
.hero-title .accent-text{color:var(--accent)}
.hero-subtitle{
  font-size:17px;line-height:1.85;color:rgba(255,255,255,0.82);
  margin-bottom:36px;max-width:560px;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.badge-stack{display:flex;justify-content:flex-end;gap:18px;flex-wrap:wrap}
.data-badge{
  background:rgba(255,255,255,0.10);
  border:1px solid rgba(255,255,255,0.18);
  border-radius:999px;padding:18px 28px;
  display:flex;align-items:center;gap:14px;
  backdrop-filter:blur(8px);
  min-width:190px;
  box-shadow:0 10px 30px rgba(2,12,27,0.22);
}
.badge-icon{
  width:38px;height:38px;border-radius:10px;
  background:rgba(0,180,216,0.18);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.badge-icon svg{width:19px;height:19px;color:var(--accent)}
.badge-num{
  font-size:26px;font-weight:800;color:#fff;line-height:1.2;
  display:flex;align-items:baseline;gap:2px;
}
.badge-num .unit{font-size:15px;font-weight:600;color:var(--warm)}
.badge-label{font-size:13px;color:rgba(255,255,255,0.68);line-height:1.4;margin-top:2px}

/* ===== Section ===== */
.section{padding:var(--space-lg) 0}
.section-head{
  text-align:center;max-width:760px;margin:0 auto 48px;
}
.section-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--accent);
  background:rgba(0,180,216,0.08);
  border:1px solid rgba(0,180,216,0.2);
  padding:7px 16px;border-radius:999px;margin-bottom:16px;
}
.section-tag::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--accent);
}
.section-title{
  font-size:34px;font-weight:800;color:var(--primary);
  line-height:1.3;margin-bottom:14px;
}
.section-desc{
  font-size:16px;color:var(--muted);line-height:1.8;
}

/* ===== Product grid ===== */
.product-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:28px;
}
.product-card{
  background:var(--white);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
  display:flex;flex-direction:column;
}
.product-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-md);
  border-color:rgba(0,180,216,0.35);
}
.product-cover{position:relative;height:200px;overflow:hidden}
.product-cover img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .45s ease;
}
.product-card:hover .product-cover img{transform:scale(1.05)}
.product-tag{
  position:absolute;top:14px;left:14px;
  background:rgba(11,31,58,0.82);
  color:#fff;font-size:12px;font-weight:500;
  padding:5px 12px;border-radius:999px;
  backdrop-filter:blur(4px);
  letter-spacing:.5px;
}
.product-body{padding:24px;display:flex;flex-direction:column;flex:1}
.product-name{font-size:20px;font-weight:700;color:var(--primary);margin-bottom:10px}
.product-text{
  font-size:14px;color:var(--muted);line-height:1.8;flex:1;
  margin-bottom:16px;
}
.product-link{
  font-size:14px;font-weight:600;color:var(--accent);
  display:inline-flex;align-items:center;gap:6px;
}
.product-link:hover{gap:10px}
.product-link::after{content:"→";transition:transform .25s ease}

/* ===== Why grid ===== */
.why-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.why-card{
  background:var(--white);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:32px 28px;
  transition:transform .25s ease,box-shadow .25s ease;
  position:relative;overflow:hidden;
}
.why-card::before{
  content:"";position:absolute;top:0;left:0;width:100%;height:3px;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  transform:scaleX(0);transform-origin:left;transition:transform .3s ease;
}
.why-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.why-card:hover::before{transform:scaleX(1)}
.why-icon{
  width:48px;height:48px;border-radius:13px;
  background:linear-gradient(135deg,rgba(0,180,216,0.14),rgba(6,214,160,0.14));
  display:flex;align-items:center;justify-content:center;
  margin-bottom:18px;
}
.why-icon svg{width:23px;height:23px;color:var(--accent)}
.why-title{font-size:18px;font-weight:700;color:var(--primary);margin-bottom:8px}
.why-text{font-size:14px;color:var(--muted);line-height:1.8}

/* ===== Compare ===== */
.compare-section{
  background:linear-gradient(180deg,var(--white),var(--bg));
}
.compare-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:24px;align-items:stretch;
}
.compare-card{
  background:var(--white);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:32px 28px;
  display:flex;flex-direction:column;
  box-shadow:var(--shadow-sm);
  transition:transform .3s ease,box-shadow .3s ease;
}
.compare-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.compare-card.compare-featured{
  background:linear-gradient(160deg,var(--primary),var(--primary-2));
  border-color:transparent;color:#fff;
  transform:scale(1.02);
  box-shadow:0 20px 40px rgba(11,31,58,0.30);
}
.compare-card.compare-featured:hover{transform:scale(1.02) translateY(-5px)}
.compare-badge{
  align-self:flex-start;
  background:var(--warm);color:var(--primary);
  font-size:12px;font-weight:700;
  padding:5px 14px;border-radius:999px;
  margin-bottom:16px;
}
.compare-name{font-size:21px;font-weight:700;color:var(--primary);margin-bottom:8px}
.compare-featured .compare-name{color:#fff}
.compare-desc{font-size:14px;color:var(--muted);margin-bottom:20px}
.compare-featured .compare-desc{color:rgba(255,255,255,0.7)}
.compare-list{display:flex;flex-direction:column;gap:12px;margin-bottom:28px;flex:1}
.compare-li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:14px;color:var(--text);
}
.compare-featured .compare-li{color:rgba(255,255,255,0.88)}
.compare-li svg{
  width:16px;height:16px;color:var(--accent);
  flex-shrink:0;margin-top:3px;
}
.compare-featured .compare-li svg{color:var(--warm)}

/* ===== Scenes ===== */
.scene-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.scene-card{
  background:var(--white);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:28px;
  display:flex;flex-direction:column;gap:10px;
  transition:transform .25s ease,box-shadow .25s ease;
}
.scene-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.scene-num{
  font-size:30px;font-weight:800;line-height:1;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
}
.scene-title{font-size:18px;font-weight:700;color:var(--primary)}
.scene-text{font-size:14px;color:var(--muted);line-height:1.8}

/* ===== Steps ===== */
.steps-wrap{
  background:var(--white);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:40px;
  box-shadow:var(--shadow-sm);
}
.steps{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:32px;position:relative;
}
.steps::before{
  content:"";position:absolute;top:28px;left:64px;right:64px;
  height:2px;background:linear-gradient(90deg,var(--accent),rgba(0,180,216,0.2));
  border-radius:2px;
}
.step{position:relative;text-align:center}
.step-dot{
  width:56px;height:56px;border-radius:50%;
  margin:0 auto 18px;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#fff;font-size:22px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 0 5px rgba(0,180,216,0.15);
  position:relative;z-index:2;
}
.step-title{font-size:17px;font-weight:700;color:var(--primary);margin-bottom:8px}
.step-text{font-size:14px;color:var(--muted);line-height:1.7}

/* ===== FAQ ===== */
.faq-wrap{
  max-width:860px;margin:0 auto;
}
.faq-item{
  background:var(--white);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  margin-bottom:16px;
  overflow:hidden;
  transition:box-shadow .3s ease,border-color .3s ease;
}
.faq-item.open{border-color:rgba(0,180,216,0.35);box-shadow:var(--shadow-sm)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;
  padding:22px 26px;
  font-size:16px;font-weight:600;color:var(--primary);
  text-align:left;gap:16px;
}
.faq-q .arrow{
  width:28px;height:28px;border-radius:50%;
  background:var(--bg);display:flex;align-items:center;justify-content:center;
  flex-shrink:0;transition:transform .3s ease,background .3s ease;
}
.faq-item.open .arrow{transform:rotate(90deg);background:rgba(0,180,216,0.12)}
.faq-q .arrow svg{width:14px;height:14px;color:var(--accent)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a-inner{padding:0 26px 24px;font-size:15px;color:var(--muted);line-height:1.85;border-top:1px dashed var(--border);margin:0 26px;padding-left:0;padding-right:0}

/* ===== CTA ===== */
.cta-banner{
  position:relative;
  background:linear-gradient(135deg,#071527,#0B1F3A 60%,#123B52);
  border-radius:var(--radius-lg);
  padding:64px 48px;text-align:center;color:#fff;
  overflow:hidden;
  margin-bottom:var(--space-lg);
}
.cta-banner::before{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(circle at 80% 20%,rgba(0,180,216,0.24),transparent 35%),
    radial-gradient(circle at 10% 90%,rgba(6,214,160,0.15),transparent 30%);
}
.cta-banner::after{
  content:"";position:absolute;top:-80px;right:-80px;
  width:220px;height:220px;border-radius:50%;
  border:1px solid rgba(255,255,255,0.1);
}
.cta-inner{position:relative;z-index:2}
.cta-title{font-size:32px;font-weight:800;margin-bottom:14px}
.cta-text{font-size:16px;color:rgba(255,255,255,0.78);margin-bottom:34px;max-width:560px;margin-left:auto;margin-right:auto}

/* ===== Footer ===== */
.site-footer{
  background:var(--primary);
  color:rgba(255,255,255,0.8);
  padding:64px 0 0;
}
.site-footer .brand-name{color:#fff}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1.2fr;
  gap:48px;padding-bottom:48px;
}
.footer-brand .brand{margin-bottom:18px}
.footer-about{
  font-size:14px;line-height:1.85;
  color:rgba(255,255,255,0.65);
  margin-bottom:20px;max-width:360px;
}
.icp-placeholder{
  display:inline-block;font-size:13px;
  color:rgba(255,255,255,0.45);
}
.footer-title{
  font-size:16px;font-weight:700;color:#fff;
  margin-bottom:20px;padding-bottom:12px;
  border-bottom:1px solid rgba(255,255,255,0.12);
}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{
  font-size:14px;color:rgba(255,255,255,0.7);
  display:inline-flex;align-items:center;gap:8px;
  transition:color .25s ease,padding-left .25s ease;
}
.footer-links a:hover{color:var(--accent);padding-left:6px}
.footer-contact{display:flex;flex-direction:column;gap:14px}
.footer-contact li{
  display:flex;align-items:center;gap:10px;
  font-size:14px;color:rgba(255,255,255,0.7);
}
.footer-contact a:hover{color:var(--accent)}
.f-icon{
  width:30px;height:30px;border-radius:8px;
  background:rgba(255,255,255,0.08);
  display:inline-flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.f-icon svg{color:var(--accent)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.1);
  padding:22px 0;text-align:center;
  font-size:14px;color:rgba(255,255,255,0.5);
}

/* ===== Responsive ===== */
@media (max-width:1023px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .badge-stack{justify-content:flex-start}
  .product-grid{grid-template-columns:repeat(2,1fr)}
  .why-grid{grid-template-columns:repeat(2,1fr)}
  .compare-grid{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);gap:40px}
  .steps::before{display:none}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .header-inner{height:64px}
  .main-nav{
    position:fixed;top:64px;left:0;right:0;bottom:0;
    background:var(--white);
    flex-direction:column;align-items:stretch;
    padding:24px 20px;
    transform:translateX(100%);
    transition:transform .35s ease;
    overflow-y:auto;
    z-index:99;
  }
  .main-nav.open{transform:translateX(0)}
  .nav-links{flex-direction:column;align-items:stretch;gap:6px}
  .nav-link{padding:14px 18px;font-size:16px}
  .nav-link.active{background:rgba(0,180,216,0.08)}
  .nav-link::after{display:none}
  .nav-mobile-actions{display:flex;flex-direction:column;gap:16px;margin-top:24px;padding-top:20px;border-top:1px solid var(--border)}
  .nav-mobile-btns{display:flex;flex-direction:column;gap:12px}
  .header-actions{display:none}
  .hamburger{display:flex}
  .nav-mobile-actions .search-box{width:100%}
  .hero{padding:84px 0 64px}
  .hero-title{font-size:32px}
  .hero-subtitle{font-size:15px}
  .badge-stack{flex-direction:column;width:100%;gap:12px}
  .data-badge{width:100%;min-width:0}
  .section{padding:56px 0}
  .section-title{font-size:27px}
  .product-grid{grid-template-columns:1fr}
  .why-grid{grid-template-columns:1fr}
  .compare-grid{grid-template-columns:1fr}
  .compare-card.compare-featured{transform:none}
  .compare-card.compare-featured:hover{transform:translateY(-5px)}
  .scene-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr;gap:36px}
  .cta-banner{padding:48px 24px}
  .cta-title{font-size:26px}
}
@media (max-width:480px){
  .brand-name{font-size:18px}
  .hero-title{font-size:27px}
  .hero-actions{flex-direction:column}
  .btn{width:100%}
  .section-title{font-size:23px}
  .product-name{font-size:18px}
}