/* roulang page: index */
:root{
  --primary:#3B82F6;
  --primary-dark:#2563EB;
  --primary-soft:#EFF6FF;
  --primary-soft2:#E3F0FF;
  --accent:#F59E0B;
  --accent-soft:#FEF3E2;
  --bg-body:#ffffff;
  --bg-section:#F7FAFF;
  --surface-card:#ffffff;
  --ink-title:#17233B;
  --ink-body:#3D4856;
  --ink-muted:#8492A6;
  --line:#E5EAF2;
  --ok:#12B981;
  --radius:12px;
  --radius-lg:16px;
  --radius-xl:22px;
  --shadow-sm:0 4px 14px rgba(59,130,246,.08);
  --shadow-md:0 8px 26px rgba(59,130,246,.13);
  --shadow-lg:0 18px 44px rgba(59,130,246,.20);
  --transition:.25s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",system-ui,-apple-system,sans-serif;
  background:var(--bg-body);
  color:var(--ink-body);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{padding:0;margin:0;list-style:none}
h1,h2,h3,h4,h5,h6{margin:0;color:var(--ink-title);line-height:1.35;font-weight:800}
p{margin:0}
button,input,textarea{font-family:inherit}
.container{max-width:1240px;margin:0 auto;padding:0 28px}
.section{padding:88px 0}
.section-alt{background:var(--bg-section)}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;background:var(--primary-soft);color:var(--primary-dark);
 padding:6px 16px;border-radius:999px;font-size:13px;font-weight:600;letter-spacing:.02em;
}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:34px;flex-wrap:wrap}
.section-head .left-title h2{font-size:33px;letter-spacing:-.2px;margin-top:10px}
.section-head .left-title h2 small{display:block;font-size:14px;color:var(--primary);margin-bottom:6px;font-weight:600;letter-spacing:.08em}
.section-head .left-title p{color:var(--ink-muted);font-size:15px;margin-top:8px}
.text-link{display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-weight:600;font-size:15px;transition:var(--transition)}
.text-link i{transition:transform var(--transition)}
.text-link:hover{color:var(--primary-dark)}
.text-link:hover i{transform:translateX(4px)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;padding:13px 30px;font-weight:700;font-size:15px;border:1px solid transparent;cursor:pointer;transition:var(--transition);line-height:1.2;outline:none}
.btn:focus-visible{outline:3px solid rgba(59,130,246,.35);outline-offset:2px}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(59,130,246,.20)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 12px 28px rgba(59,130,246,.28)}
.btn-outline{background:#fff;color:var(--primary-dark);border-color:#c7dcff}
.btn-outline:hover{background:var(--primary-soft);border-color:var(--primary);transform:translateY(-2px)}
.btn-white{background:#fff;color:var(--primary-dark)}
.btn-white:hover{background:var(--primary-soft2);transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.10)}
.btn-sm{padding:10px 20px;font-size:14px}
.chip{display:inline-block;padding:5px 14px;border-radius:999px;background:var(--primary-soft);color:var(--primary-dark);font-size:13px;font-weight:600}
.chip-accent{background:var(--accent-soft);color:#d97706}

/* ======= Header ======= */
.site-header{
  position:sticky;top:14px;z-index:120;padding:0 22px;transition:var(--transition)
}
.site-header.is-sticky{top:8px}
.header-inner{
  max-width:1240px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:rgba(255,255,255,.92);backdrop-filter:blur(14px);
  box-shadow:var(--shadow-sm);border:1px solid var(--line);
  border-radius:999px;padding:12px 20px 12px 26px;transition:var(--transition)
}
.site-header.is-sticky .header-inner{box-shadow:var(--shadow-md)}
.logo{display:flex;align-items:center;gap:12px;min-width:max-content}
.logo-mark{
  width:42px;height:42px;background:linear-gradient(135deg,#60A5FA,#2563EB);border-radius:14px;
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:20px;
  box-shadow:0 8px 18px rgba(59,130,246,.28);transform:rotate(-6deg)
}
.logo-text{font-size:19px;font-weight:800;color:var(--ink-title);letter-spacing:-.2px;line-height:1.2}
.logo-text small{display:block;font-size:11px;color:var(--ink-muted);font-weight:500;letter-spacing:.3px}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav .nav-link{padding:9px 17px;border-radius:999px;font-size:15px;font-weight:600;color:var(--ink-title);transition:var(--transition);position:relative;white-space:nowrap}
.main-nav .nav-link i{font-size:13px;opacity:.75;margin-right:5px}
.main-nav .nav-link:hover{background:var(--primary-soft);color:var(--primary)}
.main-nav .nav-link.active{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(59,130,246,.20)}
.header-actions{display:flex;align-items:center;gap:10px;min-width:max-content}
.header-actions .btn{padding:10px 20px;font-size:14px}
.menu-toggle{display:none;width:44px;height:44px;border:0;background:var(--primary-soft);border-radius:50%;cursor:pointer;position:relative}
.menu-toggle span{display:block;width:20px;height:2px;background:var(--ink-title);margin:5px auto;border-radius:2px;transition:var(--transition)}
.menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* mobile drawer nav */
.mobile-nav{
  display:none;position:fixed;top:0;left:0;right:0;bottom:0;z-index:110;
  background:rgba(23,35,59,.45);backdrop-filter:blur(4px)
}
.mobile-nav .drawer{
  position:absolute;top:0;right:0;width:min(86%,330px);height:100%;background:#fff;
  padding:24px 20px;box-shadow:-10px 0 40px rgba(23,35,59,.2);overflow-y:auto
}
.mobile-nav.open{display:block}
.drawer .drawer-title{display:flex;align-items:center;gap:10px;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:10px}
.drawer .drawer-title .logo-text{font-size:16px}
.drawer-actions{display:grid;gap:12px;margin-top:24px}
.drawer-actions .btn{width:100%}
.drawer-nav{display:grid;gap:6px}
.drawer-nav a{padding:13px 18px;border-radius:12px;background:var(--bg-section);color:var(--ink-title);font-weight:600;display:flex;align-items:center;gap:10px}
.drawer-nav a i{color:var(--primary);width:20px;text-align:center}
.drawer-nav a.active{background:var(--primary);color:#fff}

/* ======= Hero ======= */
.hero{
  position:relative;padding:64px 0 76px;overflow:hidden;background:linear-gradient(150deg,#F3F9FF 0%,#E3F0FF 58%,#E8F3FF 100%);
}
.hero::before{
  content:"";position:absolute;background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center 20%;opacity:.12;inset:0;pointer-events:none
}
.hero-bg-layer{position:absolute;top:-90px;right:-120px;width:520px;height:520px;background:radial-gradient(closest-side,rgba(147,197,253,.34),transparent);border-radius:50%;pointer-events:none}
.hero-bg-layer-left{position:absolute;left:-160px;bottom:-140px;width:460px;height:460px;background:radial-gradient(closest-side,rgba(96,165,250,.20),transparent);border-radius:50%;pointer-events:none}
.hero-inner{position:relative;z-index:3;display:grid;grid-template-columns:1.2fr .8fr;align-items:center;gap:48px}
.hero-copy{max-width:620px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid rgba(99,120,180,.12);padding:7px 16px;border-radius:999px;font-size:13px;color:var(--primary-dark);font-weight:600;box-shadow:0 6px 18px rgba(59,130,246,.14);margin-bottom:24px}
.hero-badge i{color:var(--accent)}
.hero-copy h1{font-size:clamp(32px,4.7vw,54px);letter-spacing:-1.2px;line-height:1.25;font-weight:800;margin-bottom:20px}
.hero-copy h1 em{font-style:normal;color:var(--primary);position:relative}
.hero-copy h1 em::after{content:"";position:absolute;left:0;bottom:2px;width:100%;height:8px;background:rgba(245,158,11,.22);border-radius:10px;z-index:-1}
.hero-desc{font-size:17px;color:#45546b;line-height:1.9;margin-bottom:30px;max-width:510px}
.hero-desc strong{color:var(--primary-dark);font-weight:700}
.hero-cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:22px}
.hero-note{display:flex;flex-wrap:wrap;gap:18px;color:var(--ink-muted);font-size:13px}
.hero-note span{display:inline-flex;align-items:center;gap:6px}
.hero-note i{color:var(--ok)}
.hero-visual{position:relative}
.device-card{
  position:relative;background:#fff;border-radius:26px;padding:18px 18px 0;
  box-shadow:var(--shadow-lg);border:1px solid rgba(255,255,255,.7);
  max-width:470px;margin:0 auto;transform:rotate(.5deg);
}
.device-top{display:flex;align-items:center;gap:8px;padding:4px 2px 13px}
.device-top .dot{width:10px;height:10px;border-radius:50%}
.device-top .dot:nth-child(1){background:#ff5f57}
.device-top .dot:nth-child(2){background:#febc2e}
.device-top .dot:nth-child(3){background:#28c840}
.device-top .top-text{margin-left:8px;font-size:14px;color:#334e70;font-weight:600}
.device-screen{background:#F0F8FF;border-radius:18px;padding:12px;border:1px solid rgba(150,190,230,.25);min-height:300px;position:relative;overflow:hidden}
.screen-hero{position:relative;height:110px;border-radius:14px;overflow:hidden;margin-bottom:14px;background:linear-gradient(132deg,#7db3fb,#4a87f5);display:flex;flex-direction:column;justify-content:flex-end;padding:16px}
.screen-hero::after{content:"";position:absolute;right:-16px;top:-24px;width:120px;height:120px;background:rgba(255,255,255,.18);border-radius:40%;transform:rotate(30deg)}
.screen-hero h4{color:#fff;font-size:18px;line-height:1.4}
.screen-hero span{color:rgba(255,255,255,.8);font-size:12px}
.screen-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.screen-item{height:48px;border-radius:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-size:10px;color:#17345e;background:#fff;box-shadow:0 3px 8px rgba(23,52,94,.06);font-weight:600}
.screen-item i{color:var(--primary);font-size:15px}
.screen-item.accent i{color:var(--accent)}
.float-badge{position:absolute;display:flex;align-items:center;gap:8px;background:#fff;border-radius:14px;box-shadow:var(--shadow-md);padding:10px 15px;right:-10px;top:-20px;font-size:13px;color:var(--ink-title);font-weight:700;border:1px solid #F1F7FF;animation:float 4s infinite ease-in-out}
.float-badge i{color:var(--ok)}
.float-badge.b2{left:-24px;right:auto;top:118px;animation-delay:1.6s}
.float-badge.b2 i{color:var(--accent)}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}
.hero-light{position:absolute;z-index:0;width:340px;height:340px;border-radius:50%;background:rgba(59,130,246,.14);filter:blur(70px);bottom:-10px;right:-20px}

/* Hero anchor tabs on the bottom */
.hero-anchors{position:relative;z-index:5;margin-top:54px}
.anchor-row{display:flex;gap:12px;flex-wrap:wrap}
.anchor-card{
  flex:1;min-width:180px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:16px 20px;display:flex;align-items:center;gap:14px;transition:var(--transition);cursor:pointer;
}
.anchor-card i{width:42px;height:42px;border-radius:14px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:18px}
.anchor-card b{display:block;font-size:14px;color:var(--ink-title);font-weight:700}
.anchor-card small{color:var(--ink-muted);font-size:12px}
.anchor-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);border-color:#B6D6FF}
.anchor-card:hover i{background:var(--primary);color:#fff}

/* ======= Quick Service Cards ======= */
.quick-card-wrap{margin-top:10px}
.service-card-item{
  display:flex;align-items:center;gap:18px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:22px 24px;transition:var(--transition);position:relative;overflow:hidden;cursor:pointer;height:100%
}
.service-card-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--primary);transform:scaleY(0);transition:transform .25s ease}
.service-card-item:hover::before{transform:scaleY(1)}
.service-card-item:hover{box-shadow:var(--shadow-md);translate:0 -3px;border-color:#C5DAFF}
.service-icon{width:54px;height:54px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0}
.si-blue{background:#EAF3FF;color:var(--primary)}
.si-orange{background:#FFF3E0;color:var(--accent)}
.si-green{background:#E6F9F1;color:var(--ok)}
.si-purple{background:#F0EBFF;color:#7C5CE0}
.service-card-text{flex:1}
.service-card-text h3{font-size:16px;font-weight:700;margin-bottom:4px}
.service-card-text p{font-size:13px;color:var(--ink-muted);line-height:1.6}
.service-card-arrow{width:28px;height:28px;border-radius:50%;background:var(--primary-soft);display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:12px;flex-shrink:0;transition:var(--transition)}
.service-card-item:hover .service-card-arrow{background:var(--primary);color:#fff;transform:rotate(-45deg)}

/* ======= Hot grid ======= */
.hot-grid-card{
  background:#fff;border-radius:var(--radius-lg);border:1px solid var(--line);overflow:hidden;
  box-shadow:var(--shadow-sm);transition:var(--transition);height:100%;display:flex;flex-direction:column
}
.hot-grid-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-5px)}
.hot-media{position:relative;height:168px;overflow:hidden;background:var(--primary-soft)}
.hot-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.hot-grid-card:hover .hot-media img{transform:scale(1.07)}
.hot-media::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(18,35,56,.32),transparent 70%);opacity:0;transition:var(--transition)}
.hot-grid-card:hover .hot-media::after{opacity:1}
.hot-badge{position:absolute;left:12px;top:12px;z-index:2;border-radius:8px;padding:4px 12px;font-size:12px;font-weight:700}
.hot-grid-body{padding:18px 16px;display:flex;flex-direction:column;flex:1;gap:8px}
.hot-grid-body h3{font-size:18px;font-weight:800}
.hot-desc{font-size:13px;color:var(--ink-muted);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.hot-meta{display:flex;align-items:center;gap:8px;margin-top:auto;flex-wrap:wrap}
.star-score{color:var(--accent);font-size:12px;letter-spacing:1px}
.game-tags{display:flex;gap:6px}
.game-tags span{background:var(--bg-section);border:1px solid var(--line);color:var(--ink-muted);border-radius:6px;padding:2px 9px;font-size:11px;font-weight:600}
.hot-enter{position:absolute;right:14px;bottom:36px;width:34px;height:34px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;opacity:0;transform:scale(.8);transition:all .3s ease;z-index:3}
.hot-grid-card:hover .hot-enter{opacity:1;transform:scale(1)}

/* ======= Guarantee Bar ======= */
.guarantee-bar{
  background:linear-gradient(135deg,#F4F9FF,#E9F4FF);border-radius:var(--radius-xl);
  padding:38px 26px;display:grid;grid-template-columns:repeat(4,1fr);gap:22px;border:1px solid #DDECFC
}
.g-item{display:flex;align-items:center;gap:16px;justify-content:center;padding:8px 10px;border-right:1px solid #D5E7FB}
.g-item:last-child{border-right:0}
.g-icon{width:52px;height:52px;border-radius:16px;background:#fff;box-shadow:var(--shadow-sm);display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--primary)}
.g-icon .fa-solid.fa-shield-halved{color:var(--ok)}
.g-text b{display:block;font-size:17px;color:var(--ink-title);font-weight:800}
.g-text span{font-size:13px;color:var(--ink-muted)}
.g-number b{font-size:22px;color:var(--primary)}
/* ======= Testimonials ======= */
.testi-section{background:#F2F7FD;position:relative;overflow:hidden}
.testi-section::before{content:"";position:absolute;top:-70px;right:20px;width:240px;height:240px;background:rgba(59,130,246,.10);border-radius:40%;transform:rotate(22deg);pointer-events:none}
.testi-wrap{max-width:960px;margin:0 auto;position:relative}
.testi-panel{background:#fff;border-radius:24px;padding:38px 42px 30px;box-shadow:var(--shadow-lg);border:1px solid #EBF1FA;position:relative;overflow:hidden}
.testi-panel::before{content:"\201C";position:absolute;left:4px;top:-36px;font-family:Georgia,serif;font-size:150px;color:rgba(59,130,246,.09);line-height:1}
.testi-item{display:none}
.testi-item.active{display:block;animation:fadeUp .35s ease}
.testi-quote{font-size:17px;line-height:2;color:#33455e;color:var(--ink-body);font-weight:500;margin-bottom:22px}
.testi-author{display:flex;align-items:center;gap:14px}
.testi-avatar{width:46px;height:46px;border-radius:50%;background:linear-gradient(135deg,#93C5FD,#376BE0);display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px;opacity:.8}
.testi-name b{font-size:15px;color:var(--ink-title);display:block}
.testi-name span{font-size:12px;color:var(--ink-muted)}
.testi-stars{color:var(--accent);font-size:13px;margin-top:6px}
.testi-pagination{display:flex;justify-content:center;gap:10px;margin-top:24px}
.page-dot{width:10px;height:10px;border-radius:999px;background:#C9DDF2;cursor:pointer;border:0;transition:var(--transition)}
.page-dot.active{width:30px;background:var(--primary)}
.testi-arrow{position:absolute;top:50%;width:42px;height:42px;border-radius:50%;background:#fff;border:1px solid var(--line);color:var(--primary);cursor:pointer;box-shadow:var(--shadow-sm);display:flex;align-items:center;justify-content:center;transition:var(--transition)}
.testi-arrow:hover{background:var(--primary);color:#fff}
.testi-arrow.prev{left:-20px}
.testi-arrow.next{right:-20px}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
/* ======= News / CMS section ======= */
.news-feature-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);height:100%;transition:var(--transition)}
.news-feature-card:hover{box-shadow:var(--shadow-md)}
.news-feature-media{height:190px;overflow:hidden;position:relative}
.news-feature-media img{width:100%;height:100%;object-fit:cover}
.news-feature-label{position:absolute;left:12px;top:12px;background:var(--primary);color:#fff;font-size:12px;padding:5px 14px;border-radius:999px;font-weight:600}
.news-feature-body{padding:20px}
.news-feature-body h3{font-size:21px;line-height:1.55;margin-bottom:10px}
.news-feature-body h3 a:hover{color:var(--primary)}
.news-feature-body p{font-size:14px;color:var(--ink-muted);line-height:1.8}
.news-feature-meta{display:flex;align-items:center;gap:16px;margin-top:16px;color:var(--ink-muted);font-size:13px}
.news-feature-meta i{margin-right:5px;color:var(--primary)}
.news-list-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;
  display:flex;gap:14px;align-items:flex-start;transition:var(--transition);cursor:pointer;margin-bottom:12px;height:auto
}
.news-list-card:hover{box-shadow:var(--shadow-sm);border-color:#BFD9FF;transform:translateX(4px)}
.news-list-icon{width:42px;height:42px;min-width:42px;border-radius:12px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:16px}
.news-list-content{min-width:0}
.news-list-content span{background:var(--primary-soft);color:var(--primary-dark);border-radius:6px;padding:2px 9px;font-size:11px;font-weight:600;margin-bottom:7px;display:inline-block}
.news-list-content h4{font-size:15px;color:var(--ink-title);font-weight:700;margin-bottom:5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.news-list-content p{font-size:13px;color:var(--ink-muted);display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.news-margin{margin-bottom:12px}
.news-list-card.small-h{padding:13px 14px}
.news-list-card.small-h .news-list-icon{width:36px;height:36px;min-width:36px;border-radius:10px;font-size:14px}
.news-list-card.small-h .news-list-content h4{font-size:14px}
.news-map-placeholder{padding:36px;text-align:center}
.empty-state{background:#fff;border:1px dashed #D9E6F5;border-radius:var(--radius-lg);padding:46px 20px;text-align:center}
.empty-icon{width:64px;height:64px;border-radius:50%;background:var(--primary-soft);display:flex;align-items:center;justify-content:center;margin:0 auto 14px;color:var(--primary);font-size:24px}
.empty-state p{color:var(--ink-muted);font-size:14px}
/* ======= FAQ ======= */
.faq-wrap{max-width:980px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);margin-bottom:14px;overflow:hidden;transition:box-shadow var(--transition)}
.faq-item:hover{border-color:#CCDFFA}
.faq-item.active{box-shadow:var(--shadow-md);border-color:#BFD9FF}
.faq-q{
  display:flex;gap:16px;align-items:center;padding:20px 22px;cursor:pointer;user-select:none
}
.faq-q-icon{width:28px;height:28px;min-width:28px;border-radius:9px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:14px}
.faq-q-text{font-size:16px;font-weight:700;color:var(--ink-title);flex:1}
.faq-q-toggle{width:28px;height:28px;border-radius:50%;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:16px;transition:var(--transition);background:#fff}
.faq-item.active .faq-q-toggle{background:var(--primary);color:#fff;transform:rotate(45deg);border-color:var(--primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-content{padding:0 22px 22px 66px;color:var(--ink-body);line-height:1.85;font-size:15px}
.faq-extra{text-align:center;margin-top:24px;font-size:14px;color:var(--ink-muted)}
.faq-extra a{color:var(--primary);font-weight:600;margin-left:4px}
/* ======= CTA band ======= */
.cta-band{padding:16px 20px 88px}
.cta-inner{
  background:linear-gradient(115deg,#3b82f6,#2f6ceb 60%,#2f6ceb);
  border-radius:28px;padding:58px 40px;text-align:center;position:relative;overflow:hidden
}
.cta-inner::before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 14% 30%,rgba(255,255,255,.18) 0,transparent 35%),radial-gradient(circle at 85% 60%,rgba(255,255,255,.14) 0,transparent 30%)}
.cta-inner h2{color:#fff;font-size:clamp(26px,3.6vw,40px);letter-spacing:-.8px;margin-bottom:14px}
.cta-inner p{color:rgba(255,255,255,.85);font-size:15px;margin-bottom:26px;line-height:1.8}
/* ======= Footer ======= */
.footer{background:#10233D;padding:70px 0 0;color:#A7B9CE;position:relative}
.footer-top-line{height:3px;background:linear-gradient(90deg,#60A5FA,#3B82F6 20%,#F59E0B 80%);width:100%;position:absolute;top:0;left:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px;padding-bottom:50px}
.footer .logo-text{color:#fff}
.footer .logo-mark{font-size:19px}
.footer-brand-desc{margin:18px 0 20px;font-size:13px;line-height:1.8;color:#8FA6BF;max-width:300px}
.footer-title{font-size:16px;color:#fff;font-weight:700;margin-bottom:18px}
.footer-link{list-style:none;display:grid;gap:11px}
.footer-link a{color:#93A9BF;font-size:14px;transition:var(--transition);display:inline-flex;align-items:center;gap:7px}
.footer-link a::before{content:"\f054";font-family:"Font Awesome 6 Free";font-weight:900;font-size:8px;color:#5f7fa3}
.footer-link a:hover{color:#fff;padding-left:4px}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:#93A9BF;padding-bottom:12px}
.footer-contact i{margin-top:4px;width:18px;color:#5a9bf5}
.footer-qr{width:128px;border-radius:14px;overflow:hidden;background:#fff;padding:6px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:18px 0;display:flex;justify-content:space-between;gap:12px;font-size:12.5px;color:#87a2bd;flex-wrap:wrap}
.footer-bottom .dot{color:#3D5A7C}
.footer-bottom a{color:#89b3f5}
/* responsiveness */
@media(max-width:1023px){
  .main-nav,.header-actions .btn{display:none}
  .menu-toggle{display:block}
  .hero{padding:44px 0 56px}
  .hero-inner{grid-template-columns:1fr;gap:30px}
  .hero-visual{max-width:520px;margin:0 auto}
  .hero-anchors{margin-top:36px}
  .anchor-row{flex-wrap:wrap}
  .anchor-card{min-width:200px;flex:1 1 30%}
  .guarantee-bar{grid-template-columns:1fr 1fr;gap:12px}
  .g-item{border-right:0;border-bottom:1px solid rgba(220,235,255,.4);padding-bottom:14px}
  .g-item:nth-child(odd){border-left:0}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:767px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .section-head h2{font-size:27px}
  .hero-copy h1{font-size:34px}
  .hero-desc{font-size:15px}
  .float-badge{right:-4px;top:-12px;padding:8px 12px;font-size:12px}
  .float-badge.b2{left:-10px;top:90px}
  .service-card-wrap{padding:0 12px}
  .guarantee-bar{padding:20px 12px}
  .g-item{flex-direction:column;text-align:center;gap:8px;padding:6px 2px}
  .g-icon{width:44px;height:44px}
  .g-item:nth-child(2n){border-left:0}
  .testi-panel{padding:24px 18px}
  .testi-arrow.prev{left:4px}
  .testi-arrow.next{right:4px}
  .news-feature-body h3{font-size:18px}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:28px}
  .footer-bottom{flex-direction:column;text-align:center;gap:6px}
  .cta-inner{padding:42px 22px;border-radius:20px}
  .btn{padding:12px 22px;font-size:14px}
}
@media(max-width:400px){
  .hero-copy h1{font-size:29px}
  .hero-anchors .anchor-card{min-width:100%}
  .header-actions{gap:4px}
  .header-inner{padding:10px 12px 10px 16px}
  .logo-text{font-size:15px}
}

/* roulang page: category1 */
:root {
  --primary: #3B82F6;
  --primary-dark: #2563EB;
  --primary-soft: #EFF6FF;
  --accent: #F59E0B;
  --accent-soft: #FEF3C7;
  --bg-body: #FFFFFF;
  --bg-section: #F7FAFF;
  --surface-card: #FFFFFF;
  --ink-title: #17233B;
  --ink-body: #3D4856;
  --ink-muted: #8492A6;
  --line: #E5EAF2;
  --ok: #12B981;
  --radius: 16px;
  --radius-card: 12px;
  --radius-btn: 999px;
  --shadow-card: 0 6px 24px rgba(59, 130, 246, .08);
  --shadow-hover: 0 16px 36px rgba(37, 99, 235, .14);
  --header-h: 82px;
  --space-section: 92px;
  --container-w: 1200px;
}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:var(--bg-body);color:var(--ink-body);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none;transition:color .22s ease, background .22s ease, border-color .22s ease}
a:hover{color:var(--primary-dark)}
ul,ol{list-style:none}
img{max-width:100%;display:block}
button,input,select{font-family:inherit;font-size:inherit}
i.fa-solid,i.fa-regular,i.fa-brands{line-height:1}
.container{max-width:var(--container-w);margin:0 auto;padding:0 24px;width:100%}
main{display:block;min-height:70vh}
.section{padding:calc(var(--space-section) - 12px) 0}
.section-tight{padding:56px 0}
.text-center{text-align:center}
.bg-soft{background:var(--bg-section)}
.bg-primary-soft{background:var(--primary-soft)}

/* ========== Header / Nav 卡片化 ========== */
.site-header{position:fixed;top:14px;left:0;right:0;z-index:200;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-radius:22px;box-shadow:0 10px 36px rgba(23,35,59,.10);margin:0 clamp(12px,3vw,42px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:74px;padding:0 20px 0 24px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;min-width:0}
.logo-mark{width:40px;height:40px;min-width:40px;border-radius:12px;background:linear-gradient(135deg,#3B82F6,#60A5FA);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:19px;box-shadow:0 6px 14px rgba(59,130,246,.28)}
.logo-text{font-weight:800;font-size:19px;color:var(--ink-title);letter-spacing:.02em;white-space:nowrap}
.logo-text small{font-size:12px;color:var(--ink-muted);font-weight:500;display:block;line-height:1.3;margin-top:1px}
.nav-panel{background:var(--primary-soft);border-radius:999px;padding:5px 6px;display:flex;align-items:center;gap:2px}
.main-nav{display:flex;align-items:center;gap:2px}
.nav-link{color:var(--ink-body);font-weight:600;font-size:15px;padding:8px 17px;border-radius:999px;display:inline-flex;align-items:center;gap:8px;white-space:nowrap;transition:all .22s ease}
.nav-link i{font-size:14px;color:var(--primary);opacity:.85}
.nav-link:hover{background:#fff;color:var(--primary-dark);box-shadow:0 4px 12px rgba(59,130,246,.10)}
.nav-link.active{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(59,130,246,.30);position:relative}
.nav-link.active i{color:#fff;opacity:1}
.nav-link.active::after{content:'';position:absolute;bottom:-11px;left:50%;transform:translateX(-50%);width:7px;height:7px;border-radius:50%;background:#fff;box-shadow:0 0 0 3px var(--primary)}
.header-cta{display:flex;align-items:center;gap:10px;flex-shrink:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;border-radius:var(--radius-btn);border:1px solid transparent;cursor:pointer;padding:10px 24px;font-size:15px;transition:all .25s ease;line-height:1.4;letter-spacing:.01em;text-align:center;background:none}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(59,130,246,.30)}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(37,99,235,.35)}
.btn-secondary{background:#fff;color:var(--primary);border-color:#C7DBFF}
.btn-secondary:hover{background:var(--primary-soft);border-color:var(--primary);color:var(--primary-dark);transform:translateY(-1px)}
.btn-ghost-white{background:#fff;color:var(--primary-dark);box-shadow:0 6px 18px rgba(23,35,59,.10)}
.btn-ghost-white:hover{background:var(--primary-soft);color:var(--primary-dark);transform:translateY(-2px);box-shadow:0 10px 24px rgba(23,35,59,.14)}
.btn-lg{padding:14px 34px;font-size:16px}
.header-placeholder{height:calc(74px + 30px)}

/* ========== Page Hero ========== */
.page-hero{position:relative;background:linear-gradient(135deg,#EAF3FF 0%,#D6E9FF 60%,#EEF6FF 100%);padding:80px 0 64px;overflow:hidden;margin-top:0}
.page-hero::before{content:'';position:absolute;inset:0;background-image:radial-gradient(circle at 30% 30%, rgba(255,255,255,.95) 0%, transparent 40%),linear-gradient(rgba(59,130,246,.05) 1px, transparent 1px),linear-gradient(90deg,rgba(59,130,246,.05) 1px,transparent 1px);background-size:auto,44px 44px,44px 44px;pointer-events:none}
.page-hero .container{position:relative;z-index:2}
.hero-inner{display:flex;gap:48px;align-items:center;min-height:340px}
.hero-copy{flex:1.15;padding:24px 0}
.hero-media{flex:1;display:flex;justify-content:flex-end;align-items:center}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--ink-muted);margin-bottom:22px}
.breadcrumb a{color:var(--ink-muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb i{font-size:10px;color:#A5B4C8}
.page-h1{font-size:42px;line-height:1.3;font-weight:800;color:var(--ink-title);letter-spacing:.01em;margin-bottom:18px}
.page-h1 .badge-line{display:inline-block;vertical-align:middle;background:var(--accent);color:#fff;font-size:15px;font-weight:700;padding:4px 14px;border-radius:999px;margin-left:12px;letter-spacing:.04em}
.hero-lead{font-size:17px;line-height:2;color:var(--ink-body);max-width:600px;margin-bottom:28px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.hero-tag{background:#fff;border:1px solid #D7E5FA;color:var(--ink-body);font-size:13px;font-weight:500;padding:5px 14px;border-radius:999px;display:inline-flex;align-items:center;gap:7px;box-shadow:0 2px 8px rgba(59,130,246,.05)}
.hero-tag i{color:var(--primary)}
.hero-cta-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-note{width:100%;font-size:13px;color:var(--ink-muted);margin-top:16px;display:flex;algin-items:center;gap:7px}
.hero-card-deco{width:min(420px,100%);background:#fff;border-radius:22px;padding:20px;box-shadow:0 24px 60px rgba(37,99,235,.18),0 4px 12px rgba(23,35,59,.06);border:1px solid rgba(255,255,255,.8);transform:rotate(1deg)}
.hero-card-deco img{border-radius:14px;width:100%;aspect-ratio:16/11;object-fit:cover}
.deco-overlay{position:absolute;bottom:-18px;left:-14px;right:-14px;height:60%;background:linear-gradient(180deg,transparent,rgba(255,255,255,.26));border-radius:20px;pointer-events:none}

/* ========== Quick Anchor Bar ========== */
.anchor-strip{position:relative;z-index:6;margin-top:-34px;margin-bottom:24px}
.anchor-card{background:#fff;border-radius:20px;box-shadow:0 12px 40px rgba(23,35,59,.10);padding:20px 22px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;border:1px solid rgba(229,234,242,.7)}
.anchor-label{display:inline-flex;align-items:center;gap:8px;font-weight:800;color:var(--ink-title);font-size:15px;margin-right:8px}
.anchor-label i{color:var(--primary)}
.anchor-chip{display:inline-flex;align-items:center;gap:7px;padding:8px 18px;border-radius:999px;background:var(--primary-soft);border:1px solid transparent;font-size:14px;font-weight:600;color:var(--ink-body);transition:all .22s ease}
.anchor-chip i{color:var(--primary);font-size:13px}
.anchor-chip:hover{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 6px 16px rgba(59,130,246,.25)}
.anchor-chip:hover i{color:#fff}
.anchor-chip.active{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ========== Section Header ========== */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;flex-wrap:wrap;margin-bottom:36px;position:relative;gap:16px}
.section-title-wrap{position:relative;padding-left:20px}
.section-title-wrap::before{content:'';position:absolute;left:0;top:5px;bottom:5px;width:5px;border-radius:9px;background:linear-gradient(180deg,var(--primary),#7DB5FF)}
.section-title{font-size:32px;font-weight:800;color:var(--ink-title);line-height:1.35;margin:0 0 8px}
.section-sub{font-size:15px;color:var(--ink-muted);line-height:1.75;max-width:640px}
.more-link{display:inline-flex;align-items:center;gap:7px;font-weight:600;color:var(--primary);background:var(--primary-soft);padding:9px 20px;border-radius:999px;font-size:14px}
.more-link:hover{background:var(--primary);color:#fff;transform:translateY(-2px);box-shadow:0 8px 18px rgba(59,130,246,.25)}
.more-link i{font-size:12px}

/* ========== Layout article variant A ========== */
.layout-two{display:grid;grid-template-columns:1fr 340px;gap:32px;align-items:start}
.list-feed{display:flex;flex-direction:column;gap:22px}
.post-card{display:flex;gap:22px;background:var(--surface-card);border-radius:18px;box-shadow:0 4px 18px rgba(23,35,59,.05);border:1px solid rgba(229,234,242,.8);padding:16px;transition:all .3s ease;overflow:hidden;position:relative}
.post-card::after{content:'';position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--primary);opacity:0;transition:opacity .25s ease}
.post-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.post-card:hover::after{opacity:1}
.post-thumb{width:220px;min-width:220px;aspect-ratio:16/11;border-radius:13px;overflow:hidden;background:var(--primary-soft);position:relative}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.post-card:hover .post-thumb img{transform:scale(1.05)}
.post-thumb .thumb-badge{position:absolute;top:10px;left:10px;z-index:2;background:rgba(255,255,255,.92);backdrop-filter:blur(4px);color:var(--primary-dark);font-size:12px;padding:3px 10px;border-radius:999px;font-weight:700;box-shadow:0 2px 6px rgba(23,35,59,.08)}
.post-body{flex:1;display:flex;flex-direction:column;min-width:0}
.post-cat{display:inline-flex;align-items:center;gap:6px;background:var(--primary-soft);color:var(--primary-dark);font-size:12px;padding:3px 11px;border-radius:999px;font-weight:700;margin-bottom:10px;align-self:flex-start}
.post-title{font-size:20px;font-weight:800;color:var(--ink-title);line-height:1.5;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-title a{color:inherit}
.post-title a:hover{color:var(--primary)}
.post-excerpt{font-size:14px;color:var(--ink-muted);line-height:1.75;margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{display:flex;align-items:center;gap:16px;margin-top:auto;font-size:13px;color:var(--ink-muted);flex-wrap:wrap}
.post-meta span{display:inline-flex;align-items:center;gap:6px}
.post-meta i{color:var(--primary);font-size:13px}
.post-meta .post-popular{color:var(--accent);font-weight:600}

/* ========== Sidebar ========== */
.side-panel{display:flex;flex-direction:column;gap:24px;position:sticky;top:112px}
.side-card{background:#fff;border-radius:18px;border:1px solid rgba(229,234,242,.8);box-shadow:0 4px 18px rgba(23,35,59,.05);padding:22px;overflow:hidden}
.side-card-title{font-size:18px;font-weight:800;color:var(--ink-title);display:flex;align-items:center;gap:10px;margin-bottom:18px}
.side-card-title i{width:30px;height:30px;border-radius:9px;background:var(--primary-soft);color:var(--primary);display:inline-flex;align-items:center;justify-content:center;font-size:14px}
.side-list-item{display:flex;gap:14px;padding:12px 0;border-bottom:1px dashed var(--line);align-items:center}
.side-list-item:last-child{border-bottom:0;padding-bottom:0}
.side-rank{width:26px;height:26px;min-width:26px;border-radius:9px;background:var(--primary-soft);color:var(--primary);font-weight:800;font-size:13px;display:inline-flex;align-items:center;justify-content:center}
.side-rank.rank-1{background:var(--accent-soft);color:#D97706}
.side-rank.rank-2{background:#F1F5F9;color:#64748B}
.side-rank.rank-3{background:#E5E7EB;color:#92400E}
.side-text{min-width:0}
.side-text strong{font-size:14px;color:var(--ink-title);display:block;line-height:1.5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:3px}
.side-text strong a{color:inherit}
.side-text strong a:hover{color:var(--primary)}
.side-text small{font-size:12px;color:var(--ink-muted)}
.side-tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-item{display:inline-flex;align-items:center;gap:5px;background:#F1F5FB;color:#475569;padding:6px 12px;border-radius:7px;font-size:12px;font-weight:600;transition:all .20s ease;border:1px solid transparent}
.tag-item:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.tag-item i{font-size:10px;color:var(--primary)}
.tag-item:hover i{color:#fff}
.side-contact{background:linear-gradient(135deg,#EAF3FF,#F7FBFF);border:1px solid #D7E5FA;border-radius:18px;padding:22px;text-align:center}
.side-contact i{display:inline-flex;width:46px;height:46px;border-radius:14px;background:var(--primary);color:#fff;align-items:center;justify-content:center;font-size:20px;margin-bottom:14px;box-shadow:0 8px 16px rgba(59,130,246,.3)}
.side-contact h4{font-size:18px;font-weight:800;color:var(--ink-title);margin-bottom:8px}
.side-contact p{font-size:13px;color:var(--ink-muted);margin-bottom:16px;line-height:1.7}
.side-contact .btn{display:flex;width:100%}

/* ========== Pagination ========== */
.pagination-wrap{display:flex;justify-content:center;margin-top:38px}
.page-numbers{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.page-number{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;background:#fff;color:var(--ink-body);font-weight:600;font-size:14px;border:1px solid var(--line);transition:all .22s ease}
.page-number:hover{background:var(--primary-soft);color:var(--primary);border-color:#C7DBFF;transform:translateY(-2px)}
.page-number.current{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 6px 14px rgba(59,130,246,.25)}
.page-number.dots{background:none;border:0;cursor:default}

/* ========== Topic Guide Section ========== */
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.topic-card{background:#fff;border-radius:var(--radius-card);padding:24px;border:1px solid var(--line);box-shadow:0 4px 14px rgba(23,35,59,.04);transition:all .28s ease;position:relative;overflow:hidden}
.topic-card::before{content:'';position:absolute;width:110px;height:110px;right:-36px;top:-36px;border-radius:50%;background:var(--primary-soft);opacity:.9}
.topic-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:#CFE1FF}
.topic-icon{width:48px;height:48px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;font-size:20px;position:relative;z-index:2;color:#fff;margin-bottom:16px}
.topic-icon.c1{background:linear-gradient(135deg,#3B82F6,#6EA8FF)}
.topic-icon.c2{background:linear-gradient(135deg,#F59E0B,#FBBF46)}
.topic-icon.c3{background:linear-gradient(135deg,#12B981,#45D6A5)}
.topic-card h3{font-size:18px;font-weight:800;color:var(--ink-title);margin-bottom:8px;position:relative;z-index:2}
.topic-card p{font-size:14px;color:var(--ink-muted);line-height:1.7;margin-bottom:16px;position:relative;z-index:2}
.topic-card a{font-size:13px;font-weight:700;color:var(--primary);display:inline-flex;align-items:center;gap:6px;position:relative;z-index:2}
.topic-card a i{font-size:11px;transition:transform .2s ease}
.topic-card:hover a i{transform:translateX(3px)}

/* ========== Feature Steps ========== */
.steps-wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:48px}
.step-item{text-align:center;position:relative;padding:20px 12px}
.step-item::after{content:'→';position:absolute;right:-16px;top:50%;transform:translateY(-50%);color:#B6C7E0;font-weight:700;font-size:20px}
.step-item:last-child::after{display:none}
.step-icon{width:64px;height:64px;border-radius:20px;margin:0 auto 16px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:26px;box-shadow:0 8px 18px rgba(59,130,246,.12)}
.step-item h4{font-size:16px;font-weight:800;color:var(--ink-title);margin-bottom:7px}
.step-item p{font-size:13px;color:var(--ink-muted);line-height:1.7;max-width:200px;margin:0 auto}

/* ========== CTA banner ========== */
.cta-banner{background:linear-gradient(120deg,#3B82F6,#2E6FE0);border-radius:24px;padding:48px 40px;position:relative;overflow:hidden;color:#fff;margin:48px 0}
.cta-banner::before{content:'';position:absolute;width:360px;height:360px;border-radius:50%;background:rgba(255,255,255,.12);top:-180px;right:-80px}
.cta-banner::after{content:'';position:absolute;width:220px;height:220px;border-radius:50%;background:rgba(255,255,255,.08);bottom:-120px;left:10%}
.cta-inner{position:relative;z-index:2;display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.cta-left{max-width:680px}
.cta-left h2{font-size:32px;font-weight:800;line-height:1.4;margin-bottom:10px}
.cta-left p{font-size:16px;opacity:.9;line-height:1.8}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}

/* ========== FAQ ========== */
.faq-section{background:#F2F7FC;border-radius:32px;padding:64px 32px;margin:56px 0}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:36px}
.faq-item{background:#fff;border-radius:16px;padding:22px;border:1px solid #E5EDF7;transition:all .25s ease;cursor:pointer;box-shadow:0 2px 10px rgba(23,35,59,.03)}
.faq-item:hover{box-shadow:0 8px 24px rgba(59,130,246,.12);border-color:#C7DBFF}
.faq-q{display:flex;align-items:flex-start;gap:12px}
.faq-icon{width:34px;height:34px;min-width:34px;border-radius:10px;background:var(--primary-soft);color:var(--primary);display:inline-flex;align-items:center;justify-content:center}
.faq-q strong{font-size:16px;color:var(--ink-title);font-weight:700;line-height:1.6}
.faq-a{display:none;padding:14px 6px 0 46px;font-size:15px;color:var(--ink-muted);line-height:1.9;border-top:1px dashed var(--line);margin-top:14px}
.faq-item.open .faq-a{display:block}
.faq-item.open .fa-plus{background:#E3F0FF;color:var(--primary)}
.faq-item.open .fa-chevron-down{transform:rotate(180deg)}
.faq-chevron{margin-left:auto;font-size:14px;color:var(--primary);background:var(--primary-soft);width:28px;height:28px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;transition:transform .3s ease}

/* ========== Footer ========== */
.footer{background:#122A44;color:#B6C9E0;padding:64px 0 0;position:relative;overflow:hidden}
.footer-top-line{height:4px;background:linear-gradient(90deg,#3B82F6,#789DF2,#D4A13E);border-radius:4px;position:absolute;top:0;left:0;right:0}
.footer .container{padding-bottom:12px}
.footer-grid{display:grid;grid-template-columns:1.3fr .8fr 1fr 1fr;gap:36px;padding-bottom:44px}
.footer-brand .logo{color:#fff}
.footer-brand .logo-text{color:#fff}
.footer-brand-desc{font-size:14px;line-height:1.9;color:#8FA6BF;margin:16px 0 20px;max-width:300px}
.footer-title{font-size:16px;color:#fff;font-weight:700;margin-bottom:16px;letter-spacing:.03em}
.footer-grid ul li{margin-bottom:10px}
.footer-grid ul a{color:#8FA6BF;font-size:14px;transition:all .2s}
.footer-grid ul a:hover{color:#fff;padding-left:4px}
.footer-contact li{display:flex;gap:10px;font-size:14px;line-height:1.8;color:#8FA6BF;margin-bottom:12px}
.footer-contact i{color:#5E9DFF;font-size:15px;margin-top:3px}
.footer-qr{width:130px;height:130px;border-radius:12px;padding:4px;background:#1A3450;border:1px solid #2D4B6B}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:20px;padding-bottom:24px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:13px}
.footer-bottom span{color:#6C87A3;display:inline-flex;align-items:center;gap:6px}
.chip{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:600;padding:5px 12px;border-radius:999px;background:rgba(255,255,255,.1);color:#CFE2FF}

/* ========== Mobile nav ========== */
.mobile-toggle{width:42px;height:42px;border-radius:12px;background:var(--primary-soft);color:var(--primary);border:0;font-size:19px;display:none;align-items:center;justify-content:center;cursor:pointer}
.mobile-toggle:hover{background:var(--primary);color:#fff}
.mobile-nav{display:none;position:fixed;top:14px;right:12px;left:12px;background:#fff;border-radius:20px;box-shadow:0 24px 60px rgba(23,35,59,.25);padding:18px;z-index:300;border:1px solid var(--line)}
.mobile-nav.open{display:block}
.mobile-nav-a{display:flex;align-items:center;gap:12px;padding:13px 14px;border-radius:13px;background:#fff;color:var(--ink-title);font-weight:700;font-size:15px;border:1px solid transparent}
.mobile-nav-a:hover,.mobile-nav-a.active{background:var(--primary-soft);color:var(--primary)}
.mobile-nav-a i{width:30px;height:30px;background:#fff;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;color:var(--primary);box-shadow:0 2px 6px rgba(23,35,59,.05);font-size:14px}
.mobile-nav .btn{width:100%;margin-top:8px}
.backdrop{position:fixed;inset:0;background:rgba(23,35,59,.28);backdrop-filter:blur(3px);z-index:240;display:none}
.backdrop.open{display:block}

/* ========== Responsive ========== */
@media (max-width:1023px) {
  :root{--space-section:66px}
  .header-inner{height:68px}
  .site-header{top:10px}
  .header-placeholder{height:calc(68px + 24px)}
  .nav-panel{display:none}
  .header-cta .btn-secondary{display:none}
  .mobile-toggle{display:inline-flex}
  .layout-two{grid-template-columns:1fr}
  .side-panel{position:static;display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
  .topic-grid{grid-template-columns:repeat(2,1fr)}
  .steps-wrap{grid-template-columns:repeat(2,1fr);row-gap:36px}
  .step-item:nth-child(2)::after{display:none}
  .faq-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero-inner{flex-direction:column}
  .hero-media{justify-content:center;padding-top:12px}
  .hero-card-deco{transform:none;max-width:380px}
  .page-h1{font-size:34px}
}

@media (max-width:639px) {
  :root{--space-section:50px}
  .container{padding:0 16px}
  .site-header{margin:0 8px}
  .header-inner{padding:0 12px;height:62px;gap:8px}
  .header-placeholder{height:calc(62px + 20px)}
  .logo-text{font-size:15px}
  .logo-mark{width:34px;height:34px;min-width:34px;font-size:16px;border-radius:10px}
  .header-cta .btn{padding:8px 16px;font-size:13px}
  .header-cta .btn-ghost-white{display:none}
  .page-hero{padding:28px 0 32px}
  .page-h1{font-size:27px;line-height:1.4}
  .page-h1 .badge-line{display:inline-block;margin:8px 0 0 0;font-size:12px}
  .hero-lead{font-size:15px;line-height:1.85}
  .hero-tags{gap:6px}
  .hero-cta-row .btn{width:calc(50% - 6px)}
  .hero-cta-row .btn i{margin-right:2px}
  .anchor-strip{margin-top:0}
  .anchor-card{overflow-x:auto;flex-wrap:nowrap;align-items:center;padding:14px;gap:8px;scrollbar-width:none}
  .anchor-card::-webkit-scrollbar{display:none}
  .anchor-chip{flex-shrink:0;padding:7px 13px;font-size:13px}
  .anchor-label{display:none}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:24px}
  .section-title{font-size:25px}
  .section-title-wrap{padding-left:14px}
  .post-card{flex-direction:column;padding:12px}
  .post-thumb{width:100%;aspect-ratio:16/8}
  .post-title{font-size:17px}
  .topic-grid{grid-template-columns:1fr}
  .steps-wrap{grid-template-columns:1fr}
  .step-item::after{display:none}
  .cta-banner{padding:32px 20px;margin:20px 0 36px}
  .cta-left h2{font-size:24px}
  .cta-actions .btn{width:100%}
  .faq-section{border-radius:20px;padding:32px 14px}
  .faq-item{padding:16px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;text-align:center}
  .side-panel{grid-template-columns:1fr}
  .btn-lg{width:100%;justify-content:center}
}

/* roulang page: article */
:root {
  --primary: #3B82F6;
  --primary-dark: #2563EB;
  --primary-soft: #EFF6FF;
  --accent: #F59E0B;
  --bg-body: #F7FAFF;
  --surface-card: #FFFFFF;
  --ink-title: #17233B;
  --ink-body: #3D4856;
  --ink-muted: #8492A6;
  --line: #E5EAF2;
  --ok: #12B981;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-pill: 999px;
  --shadow-sm: 0 4px 14px rgba(59,130,246,.07);
  --shadow-md: 0 10px 30px rgba(59,130,246,.10);
  --shadow-lg: 0 16px 44px rgba(37,99,235,.13);
  --transition: .25s ease;
  --container-width: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-body);
  color: var(--ink-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: inline-block; vertical-align: middle; }
a { text-decoration: none; color: inherit; transition: color var(--transition), background var(--transition), box-shadow var(--transition), transform var(--transition); }
ul, ol, p, h1, h2, h3, h4, h5, h6, blockquote, figure { margin: 0; padding: 0; }
ul, ol { list-style: none; }
button { font-family: inherit; }
a:focus-visible, button:focus-visible { outline: 3px solid rgba(59,130,246,.45); outline-offset: 2px; border-radius: 8px; }

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-pill);
  padding: 12px 26px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn i { font-size: 14px; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 8px 20px rgba(59,130,246,.18); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 12px 28px rgba(37,99,235,.25); }
.btn-outline { background: #fff; color: var(--primary); border-color: rgba(59,130,246,.4); }
.btn-outline:hover { background: var(--primary-soft); border-color: var(--primary); transform: translateY(-2px); }
.btn-block { width: 100%; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: var(--radius-pill);
  padding: 5px 13px;
  font-size: 12px;
  font-weight: 600;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(229,234,242,.8);
  box-shadow: 0 8px 24px rgba(37,99,235,.05);
}
.header-inner { display: flex; align-items: center; gap: 20px; height: 76px; }
.logo { display: inline-flex; align-items: center; gap: 12px; flex-shrink: 0; }
.logo-mark {
  width: 42px;
  height: 42px;
  border-radius: 13px;
  background: linear-gradient(135deg, #4C95FF, var(--primary-dark));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 19px;
  box-shadow: 0 8px 18px rgba(37,99,235,.28);
}
.logo-text { font-size: 21px; font-weight: 800; color: var(--ink-title); letter-spacing: .5px; }

.main-nav { display: flex; align-items: center; gap: 2px; margin-left: auto; }
.main-nav .nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-body);
}
.main-nav .nav-link i { color: var(--primary); font-size: 13px; opacity: .8; }
.main-nav .nav-link:hover, .main-nav .nav-link.active { background: var(--primary); color: #fff; box-shadow: 0 6px 16px rgba(59,130,246,.22); }
.main-nav .nav-link:hover i, .main-nav .nav-link.active i { color: #fff; }
.main-nav .nav-link.active::after {
  content: "";
  position: absolute;
  top: 5px;
  right: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 0 2px rgba(255,255,255,.35);
}

.header-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }
.header-actions .btn { padding: 10px 22px; font-size: 14px; }

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 12px;
  background: var(--primary-soft);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--primary); border-radius: 4px; transition: all var(--transition); }

.mobile-drawer {
  position: fixed;
  top: 0;
  right: -88vw;
  width: 82vw;
  max-width: 360px;
  height: 100vh;
  background: #fff;
  z-index: 70;
  padding: 24px 20px 30px;
  transition: right .3s ease;
  box-shadow: -20px 0 50px rgba(23,35,59,.15);
  overflow-y: auto;
}
.mobile-drawer .drawer-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.mobile-drawer .drawer-close {
  width: 38px;
  height: 38px;
  border: 0;
  border-radius: 10px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 16px;
  cursor: pointer;
}
.mobile-drawer nav { display: flex; flex-direction: column; gap: 8px; }
.mobile-drawer .nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 14px;
  border-radius: 12px;
  font-weight: 700;
  color: var(--ink-title);
  background: #F7FAFF;
}
.mobile-drawer .nav-link i { color: var(--primary); width: 20px; }
.mobile-drawer .nav-link.active { background: var(--primary); color: #fff; }
.mobile-drawer .nav-link.active i { color: #fff; }
.mobile-drawer .drawer-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.mobile-drawer .drawer-actions .btn { flex: 1; }
.drawer-mask {
  position: fixed;
  inset: 0;
  background: rgba(15,26,44,.45);
  z-index: 65;
  opacity: 0;
  visibility: hidden;
  transition: all .3s ease;
}
body.nav-open { overflow: hidden; }
body.nav-open .mobile-drawer { right: 0; }
body.nav-open .drawer-mask { opacity: 1; visibility: visible; }

.article-banner {
  position: relative;
  background: linear-gradient(120deg, rgba(255,255,255,.96), rgba(239,246,255,.90)), url('/assets/images/backpic/back-1.png') center/cover;
  padding: 34px 0 12px;
  border-bottom: 1px solid var(--line);
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--ink-muted);
}
.breadcrumb a { color: var(--primary); font-weight: 600; }
.breadcrumb a:hover { color: var(--primary-dark); }
.breadcrumb span { display: inline-flex; align-items: center; gap: 6px; }
.breadcrumb i { color: var(--accent); font-size: 11px; }

.article-layout { padding: 30px 0 60px; }
.article-column-left, .article-column-right { margin-bottom: 20px; }
.card-panel {
  background: var(--surface-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.article-head { padding: 30px 34px 10px; }
.crumb-category {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(245,158,11,.14);
  color: #B45309;
  border-radius: var(--radius-pill);
  padding: 5px 13px;
  font-size: 13px;
  font-weight: 700;
}
.article-title {
  font-size: 34px;
  line-height: 1.4;
  color: var(--ink-title);
  font-weight: 800;
  margin: 14px 0 14px;
  letter-spacing: .2px;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 18px;
  color: var(--ink-muted);
  font-size: 14px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-meta i { color: var(--primary); opacity: .65; }
.article-meta .author { font-weight: 600; color: var(--ink-title); }

.article-body { padding: 28px 34px 24px; }
.article-entry { font-size: 16px; line-height: 1.88; color: var(--ink-body); }
.article-entry p { margin-bottom: 20px; }
.article-entry h2, .article-entry h3 { color: var(--ink-title); font-weight: 800; line-height: 1.45; }
.article-entry h2 {
  font-size: 24px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  margin: 38px 0 16px;
}
.article-entry h3 { font-size: 19px; margin: 28px 0 12px; }
.article-entry a { color: var(--primary); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }
.article-entry a:hover { color: var(--primary-dark); }
.article-entry img { border-radius: 12px; box-shadow: var(--shadow-sm); }
.article-entry blockquote {
  background: var(--primary-soft);
  border-left: 4px solid var(--accent);
  padding: 16px 20px;
  border-radius: 0 12px 12px 0;
  margin: 24px 0;
  color: #344;
}
.article-entry ul, .article-entry ol { margin: 0 0 20px; padding-left: 22px; }
.article-entry ul { list-style: square; }
.article-entry ol { list-style: decimal; }
.article-entry li { margin-bottom: 8px; }
.article-entry table { width: 100%; border-collapse: collapse; margin-bottom: 22px; font-size: 15px; }
.article-entry th, .article-entry td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; }
.article-entry th { background: var(--primary-soft); font-weight: 700; }

.article-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 18px 34px 26px;
}
.tag-label { font-size: 14px; font-weight: 700; color: var(--ink-title); margin-right: 4px; }
.tag-link {
  display: inline-block;
  background: var(--primary-soft);
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  transition: all var(--transition);
}
.tag-link:hover { background: var(--primary); color: #fff; }

.post-nav {
  margin: 26px auto 0;
  padding: 0 34px 30px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
@media (min-width: 640px) {
  .post-nav { flex-direction: row; }
}
.post-nav a {
  flex: 1;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px 18px;
  background: #F8FBFF;
  transition: all var(--transition);
}
.post-nav a:hover { border-color: var(--primary); background: var(--primary-soft); box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.post-nav .nav-label { display: block; font-size: 12px; color: var(--ink-muted); margin-bottom: 5px; }
.post-nav .nav-title { display: block; font-size: 15px; font-weight: 700; color: var(--ink-title); line-height: 1.5; }
.post-nav .post-next { text-align: right; }

.empty-state {
  text-align: center;
  padding: 70px 24px 80px;
}
.empty-icon {
  width: 92px;
  height: 92px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  box-shadow: inset 0 0 0 6px rgba(255,255,255,.7);
}
.empty-state h1 { font-size: 28px; font-weight: 800; color: var(--ink-title); margin-bottom: 8px; }
.empty-state h2 { font-size: 21px; font-weight: 700; color: var(--primary-dark); margin: 14px 0 8px; }
.empty-state p { color: var(--ink-muted); margin-bottom: 22px; }
.empty-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.article-side { display: flex; flex-direction: column; gap: 20px; }
.side-card { padding: 22px; }
.side-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--ink-title);
  margin-bottom: 16px;
  padding-left: 11px;
  border-left: 4px solid var(--primary);
}
.toc-nav { display: flex; flex-direction: column; gap: 8px; }
.toc-link {
  border-radius: 10px;
  padding: 8px 10px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink-body);
  display: flex;
  align-items: flex-start;
  gap: 8px;
  transition: all var(--transition);
}
.toc-link i { color: var(--primary); font-size: 13px; margin-top: 5px; }
.toc-link:hover { background: var(--primary-soft); color: var(--primary-dark); }
.toc-sub { padding-left: 28px; }

.rec-list { display: flex; flex-direction: column; gap: 12px; }
.rec-item {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 10px;
  border-radius: 12px;
  border: 1px solid transparent;
  transition: all var(--transition);
}
.rec-item:hover { background: #F8FBFF; border-color: var(--line); box-shadow: var(--shadow-sm); transform: translateY(-1px); }
.rec-thumb {
  width: 86px;
  height: 62px;
  border-radius: 9px;
  object-fit: cover;
  flex-shrink: 0;
  box-shadow: 0 3px 10px rgba(23,35,59,.08);
}
.rec-info { min-width: 0; }
.rec-title {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink-title);
  line-height: 1.5;
  margin-bottom: 4px;
}
.rec-meta { font-size: 12px; color: var(--ink-muted); }

.support-card { position: relative; overflow: hidden; }
.support-card::after {
  content: "\f1b0";
  font-family: "Font Awesome 6 Free";
  font-weight: 600;
  position: absolute;
  right: -8px;
  bottom: -10px;
  font-size: 90px;
  color: rgba(59,130,246,.05);
  transform: rotate(-10deg);
}
.support-card h3 { font-size: 19px; font-weight: 800; color: var(--ink-title); margin-bottom: 8px; }
.support-card p { font-size: 14px; color: var(--ink-muted); line-height: 1.7; margin-bottom: 16px; }
.support-card .btn { margin-bottom: 10px; }

.footer { margin-top: 40px; background: #10243F; color: #CFE2FF; position: relative; }
.footer-top-line { height: 3px; background: linear-gradient(90deg, transparent, var(--accent), var(--primary), var(--accent), transparent); }
.footer .container { padding-top: 54px; padding-bottom: 22px; }
.footer-grid {
  display: grid;
  grid-template-columns: 2.2fr 1fr 1.2fr 1.1fr;
  gap: 36px;
}
.footer-brand .logo-text { color: #fff; font-size: 20px; }
.footer-brand-desc { color: #8FA6BF; font-size: 14px; line-height: 1.8; margin: 16px 0 18px; }
.chip i { color: var(--ok); }
.footer-title { color: #fff; font-size: 17px; font-weight: 700; margin-bottom: 18px; }
.footer-link, .footer-contact { display: flex; flex-direction: column; gap: 12px; }
.footer-link a { color: #AFC3D8; font-size: 14px; display: inline-flex; align-items: center; gap: 6px; transition: all .2s ease; }
.footer-link a::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--primary); opacity: .55; }
.footer-link a:hover { color: #fff; text-decoration: underline; text-underline-offset: 4px; }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; color: #AFC3D8; font-size: 14px; line-height: 1.7; }
.footer-contact i { color: var(--primary); margin-top: 4px; width: 18px; text-align: center; }
.footer-qr { width: 116px; border-radius: 12px; padding: 4px; background: #fff; }
.footer-bottom {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 13px;
  color: #6E8DB0;
}

@media (max-width: 1100px) {
  .main-nav .nav-link { padding: 8px 11px; font-size: 14px; gap: 5px; }
  .header-actions .btn { padding: 9px 14px; }
  .header-actions .btn-outline { display: none; }
}

@media (max-width: 880px) {
  .main-nav { display: none; }
  .header-actions { display: none; }
  .nav-toggle { display: inline-flex; margin-left: auto; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
}

@media (max-width: 639px) {
  .container { padding: 0 16px; }
  .header-inner { height: 66px; }
  .logo-mark { width: 38px; height: 38px; border-radius: 11px; font-size: 16px; }
  .logo-text { font-size: 17px; }
  .article-banner { padding: 24px 0 6px; }
  .article-head { padding: 22px 18px 8px; }
  .article-body { padding: 22px 18px 18px; }
  .article-title { font-size: 25px; }
  .article-meta { font-size: 13px; gap: 10px; }
  .article-entry { font-size: 15px; line-height: 1.85; }
  .article-entry h2 { font-size: 21px; }
  .article-tags { padding: 16px 18px 20px; }
  .post-nav { padding: 0 18px 24px; }
  .article-side { gap: 16px; }
  .side-card { padding: 18px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* roulang page: category2 */
:root {
  --primary: #3B82F6;
  --primary-dark: #2563EB;
  --primary-soft: #EFF6FF;
  --primary-softer: #F4F9FF;
  --accent: #F59E0B;
  --accent-soft: #FFF4DC;
  --body-bg: #FFFFFF;
  --section-bg: #F7FAFF;
  --surface-card: #FFFFFF;
  --ink-title: #17233B;
  --ink-body: #3D4856;
  --ink-muted: #8492A6;
  --line: #E5EAF2;
  --success: #12B981;
  --radius-card: 16px;
  --radius-box: 24px;
  --radius-round: 999px;
  --shadow-card: 0 4px 18px rgba(59, 130, 246, .08);
  --shadow-hover: 0 14px 34px rgba(59, 130, 246, .13);
  --font-main: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  background: var(--body-bg);
  color: var(--ink-body);
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
a {
  color: inherit;
  text-decoration: none;
}
ul,
ol {
  list-style: none;
}
button,
input {
  font-family: inherit;
  font-size: inherit;
}
button {
  cursor: pointer;
}
h1,
h2,
h3,
h4,
h5 {
  color: var(--ink-title);
  line-height: 1.35;
  font-weight: 800;
}
h1 {
  font-size: clamp(30px, 4.2vw, 48px);
}
h2 {
  font-size: clamp(26px, 3vw, 36px);
  margin-bottom: 14px;
}
h3 {
  font-size: 20px;
}
p {
  color: var(--ink-body);
}
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid rgba(59, 130, 246, .5);
  outline-offset: 3px;
  border-radius: 8px;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.grid-container {
  max-width: 1200px;
  padding-left: 24px;
  padding-right: 24px;
}
.section {
  padding: 84px 0;
}
.section-alt {
  background: var(--section-bg);
}
.section-head {
  max-width: 720px;
  margin: 0 auto 52px;
  text-align: center;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  padding: 6px 14px;
  background: var(--primary-soft);
  border: 1px solid rgba(59, 130, 246, .12);
  border-radius: var(--radius-round);
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .4px;
}
.section-head h2 {
  margin-bottom: 10px;
}
.section-head p {
  color: var(--ink-muted);
  font-size: 16px;
  line-height: 1.75;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 120;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(229, 234, 242, .8);
  box-shadow: 0 4px 24px rgba(59, 130, 246, .06);
}
.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 14px;
  min-height: 74px;
  padding: 12px 24px;
  max-width: 1240px;
  margin: 0 auto;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(145deg, #4DA3FF, #2563EB);
  color: #fff;
  font-size: 20px;
  box-shadow: 0 6px 16px rgba(59, 130, 246, .22);
}
.logo-text {
  color: var(--ink-title);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: .4px;
  white-space: nowrap;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  padding: 6px;
  background: #F2F7FC;
  border: 1px solid rgba(229, 234, 242, .8);
  border-radius: var(--radius-round);
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 15px;
  border-radius: var(--radius-round);
  font-size: 14px;
  font-weight: 600;
  color: #2B3A55;
  white-space: nowrap;
  transition: all .22s ease;
}
.nav-link i {
  color: #6686A8;
  font-size: 13px;
  transition: color .22s ease;
}
.nav-link:hover {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: 0 3px 12px rgba(59, 130, 246, .1);
}
.nav-link:hover i {
  color: var(--primary-dark);
}
.nav-link.active {
  background: var(--primary-dark);
  color: #fff;
  box-shadow: 0 5px 14px rgba(37, 99, 235, .25);
}
.nav-link.active i {
  color: #fff;
}
.header-tools {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  margin-left: 8px;
}
.header-tools .btn-header {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: var(--radius-round);
  font-size: 13px;
  font-weight: 700;
  transition: all .22s ease;
  white-space: nowrap;
}
.btn-header-secondary {
  background: #fff;
  border: 1px solid var(--line);
  color: var(--primary-dark);
}
.btn-header-secondary:hover {
  background: var(--primary-soft);
  border-color: rgba(59, 130, 246, .35);
}
.btn-header-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 5px 14px rgba(59, 130, 246, .2);
}
.btn-header-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(59, 130, 246, .25);
}
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--ink-title);
  font-size: 16px;
  margin-left: auto;
  transition: background .2s ease;
}
.nav-toggle:hover {
  background: var(--primary-soft);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--radius-round);
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 15px;
  line-height: 1.3;
  transition: all .22s ease;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 7px 18px rgba(59, 130, 246, .25);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(37, 99, 235, .3);
}
.btn-outline {
  background: #fff;
  border-color: rgba(59, 130, 246, .4);
  color: var(--primary-dark);
}
.btn-outline:hover {
  background: var(--primary-soft);
  border-color: var(--primary);
  transform: translateY(-2px);
}
.btn-white {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: 0 6px 16px rgba(255, 255, 255, .3);
}
.btn-white:hover {
  background: #F0F6FF;
  transform: translateY(-2px);
}
.btn-lg {
  padding: 16px 32px;
  font-size: 16px;
}

/* ===== Hero category ===== */
.hero-category {
  position: relative;
  overflow: hidden;
  padding: 82px 0 72px;
  background:
    radial-gradient(circle at 84% 18%, rgba(59, 130, 246, .16), transparent 320px),
    radial-gradient(circle at 10% 78%, rgba(245, 158, 11, .13), transparent 280px),
    linear-gradient(150deg, #EDF5FF 0%, #F8FBFF 58%, #FFFFFF 100%);
}
.hero-category:before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(37, 99, 235, .05) 1px, transparent 1px), linear-gradient(90deg, rgba(37, 99, 235, .05) 1px, transparent 1px);
  background-size: 42px 42px;
  pointer-events: none;
  mask-image: linear-gradient(to bottom, #000, transparent 72%);
  -webkit-mask-image: linear-gradient(to bottom, #000, transparent 72%);
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, .88);
  border: 1px solid rgba(59, 130, 246, .14);
  border-radius: var(--radius-round);
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 700;
  padding: 7px 14px;
  box-shadow: 0 3px 10px rgba(59, 130, 246, .08);
  margin-bottom: 18px;
}
.hero-badge i {
  color: var(--accent);
}
.hero-category h1 {
  position: relative;
  margin-bottom: 16px;
  font-size: clamp(34px, 5.2vw, 60px);
  letter-spacing: 1px;
}
.hero-lead {
  position: relative;
  max-width: 565px;
  color: var(--ink-body);
  font-size: 17px;
  line-height: 1.8;
  margin-bottom: 30px;
}
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 22px;
}
.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  align-items: center;
  color: var(--ink-muted);
  font-size: 14px;
}
.hero-trust span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.hero-trust span i {
  color: var(--success);
}
.hero-preview {
  position: relative;
  margin: 10px 0 10px auto;
  max-width: 520px;
  padding: 12px;
  background: rgba(255, 255, 255, .82);
  border: 1px solid rgba(229, 234, 242, .9);
  border-radius: 28px;
  box-shadow: 0 18px 46px rgba(59, 130, 246, .16);
  transform: rotate(.4deg);
}
.hero-preview img {
  width: 100%;
  border-radius: 18px;
  object-fit: cover;
}
.hero-chip {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid rgba(229, 234, 242, .8);
  border-radius: var(--radius-round);
  box-shadow: 0 8px 20px rgba(59, 130, 246, .16);
  padding: 9px 14px;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-title);
  white-space: nowrap;
}
.hero-chip i {
  color: var(--primary);
}
.hero-chip-first {
  top: 22px;
  left: -34px;
}
.hero-chip-second {
  right: -22px;
  bottom: 54px;
}
.hero-chip-third {
  left: 24px;
  bottom: -18px;
}

/* ===== Quick anchors ===== */
.quick-anchor-wrap {
  margin-top: 42px;
  position: relative;
  z-index: 4;
}
.anchor-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-box);
  box-shadow: var(--shadow-card);
  padding: 16px;
  margin-top: 18px;
}
.anchor-chip {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 16px;
  background: #F7FAFF;
  border-radius: var(--radius-card);
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 15px;
  color: var(--ink-title);
  transition: all .22s ease;
}
.anchor-chip i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: var(--primary-soft);
  border-radius: 10px;
  color: var(--primary);
  font-size: 15px;
  flex: 0 0 auto;
  transition: all .22s ease;
}
.anchor-chip:hover {
  background: var(--primary);
  color: #fff;
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: 0 8px 22px rgba(59, 130, 246, .22);
}
.anchor-chip:hover i {
  background: rgba(255, 255, 255, .2);
  color: #fff;
}

/* ===== Card ===== */
.map-card {
  height: 100%;
  background: var(--surface-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-box);
  box-shadow: var(--shadow-card);
  padding: 26px 22px;
  transition: all .26s ease;
  display: flex;
  flex-direction: column;
}
.map-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(59, 130, 246, .18);
}
.map-card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  background: var(--primary-soft);
  color: var(--primary-dark);
  border-radius: 17px;
  font-size: 23px;
  margin-bottom: 18px;
  transition: all .26s ease;
}
.map-card:hover .map-card-icon {
  background: var(--primary);
  color: #fff;
  transform: rotate(-4deg) scale(1.03);
}
.map-card h3 {
  margin-bottom: 10px;
}
.map-card p {
  color: var(--ink-muted);
  font-size: 14px;
  line-height: 1.75;
  margin-bottom: 14px;
  flex: 1;
}
.map-card ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 4px;
}
.map-card ul li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ink-body);
  font-size: 13px;
  line-height: 1.6;
}
.map-card ul li i {
  color: var(--success);
  font-size: 12px;
}

/* ===== Steps ===== */
.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
}
.process-card {
  height: 100%;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-box);
  box-shadow: var(--shadow-card);
  padding: 24px 18px;
  position: relative;
  transition: all .26s ease;
}
.process-card:hover {
  border-color: rgba(59, 130, 246, .2);
  box-shadow: var(--shadow-hover);
  transform: translateY(-5px);
}
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, #60A5FA, #2563EB);
  color: #fff;
  border-radius: 11px;
  font-size: 14px;
  font-weight: 800;
  margin-bottom: 16px;
}
.process-card h3 {
  font-size: 17px;
  margin-bottom: 10px;
}
.process-card p {
  color: var(--ink-muted);
  font-size: 13.5px;
  line-height: 1.75;
}

/* ===== Scene area ===== */
.scene-wrap {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 40px;
  align-items: center;
}
.scene-media {
  border-radius: var(--radius-box);
  overflow: hidden;
  box-shadow: var(--shadow-hover);
}
.scene-media img {
  width: 100%;
  height: 100%;
  min-height: 330px;
  object-fit: cover;
}
.scene-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.scene-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 20px;
  transition: all .22s ease;
}
.scene-item:hover {
  border-color: rgba(59, 130, 246, .25);
  box-shadow: var(--shadow-hover);
  transform: translateX(4px);
}
.scene-item-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  border-radius: 13px;
  background: var(--accent-soft);
  color: #C87F08;
  font-weight: 800;
  font-size: 14px;
}
.scene-item h3 {
  font-size: 17px;
  margin-bottom: 6px;
}
.scene-item p {
  color: var(--ink-muted);
  font-size: 14px;
  line-height: 1.7;
}

/* ===== Safety strip ===== */
.safety-wrap {
  padding: 44px 0;
}
.safety-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-box);
  box-shadow: var(--shadow-card);
  padding: 18px 0;
}
.safety-point {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 24px;
  border-right: 1px solid #EEF2F8;
}
.safety-point:last-child {
  border-right: 0;
}
.safety-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: var(--primary-soft);
  color: var(--primary-dark);
  font-size: 19px;
  flex: 0 0 auto;
}
.safety-point h4 {
  color: var(--ink-title);
  font-size: 16px;
  margin-bottom: 3px;
}
.safety-point p {
  color: var(--ink-muted);
  font-size: 13px;
  line-height: 1.6;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 880px;
  margin: 0 auto;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow-card);
  padding: 0;
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.faq-item.active {
  border-color: rgba(59, 130, 246, .25);
  box-shadow: var(--shadow-hover);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  background: transparent;
  border: 0;
  padding: 19px 20px;
  text-align: left;
  color: var(--ink-title);
  font-size: 16px;
  font-weight: 700;
  transition: background .2s ease;
}
.faq-question:hover {
  background: #F9FBFF;
}
.faq-q-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 14px;
  flex: 0 0 auto;
}
.faq-plus {
  position: relative;
  width: 22px;
  height: 22px;
  margin-left: auto;
  flex: 0 0 auto;
}
.faq-plus:before,
.faq-plus:after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 14px;
  height: 2px;
  background: #7A8DA6;
  border-radius: 3px;
  transform: translate(-50%, -50%);
  transition: all .24s ease;
}
.faq-plus:after {
  transform: translate(-50%, -50%) rotate(90deg);
}
.faq-item.active .faq-plus:before {
  background: var(--primary-dark);
}
.faq-item.active .faq-plus:after {
  transform: translate(-50%, -50%) rotate(0deg);
  background: var(--primary-dark);
}
.faq-answer {
  display: none;
  padding: 0 22px 22px 66px;
  color: var(--ink-body);
  font-size: 15px;
  line-height: 1.85;
}
.faq-item.active .faq-answer {
  display: block;
}
.faq-more {
  text-align: center;
  margin-top: 24px;
}
.faq-more a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary-dark);
  font-weight: 700;
  font-size: 15px;
  padding: 8px 16px;
  border-radius: var(--radius-round);
  transition: all .2s ease;
}
.faq-more a:hover {
  background: var(--primary-soft);
}

/* ===== CTA area ===== */
.cta-zone {
  padding: 40px 0 84px;
}
.cta-box {
  position: relative;
  overflow: hidden;
  text-align: center;
  border-radius: 30px;
  background: linear-gradient(135deg, #3C8CFF, #2E6FE0);
  padding: 54px 24px;
  color: #fff;
  box-shadow: 0 22px 48px rgba(37, 99, 235, .25);
}
.cta-box:after {
  content: "";
  position: absolute;
  right: -40px;
  top: -40px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .1);
}
.cta-box h2 {
  position: relative;
  color: #fff;
  margin-bottom: 12px;
  font-size: clamp(26px, 3.2vw, 36px);
}
.cta-box p {
  position: relative;
  color: rgba(255, 255, 255, .86);
  margin-bottom: 28px;
  font-size: 16px;
}
.cta-box .btn-white {
  position: relative;
  z-index: 2;
  border: 0;
}
.cta-tip {
  position: relative;
  display: block;
  color: rgba(255, 255, 255, .72);
  font-size: 13px;
  margin-top: 16px;
}

/* ===== Footer ===== */
.footer {
  background: #122A44;
  color: #AFC0D2;
  font-size: 14px;
  padding: 58px 0 26px;
}
.footer-top-line {
  height: 2px;
  background: linear-gradient(90deg, #3B82F6, rgba(255, 255, 255, .25), #3B82F6);
  margin-top: -58px;
  margin-bottom: 54px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2.1fr 1fr 1.35fr 1.2fr;
  gap: 40px;
  margin-bottom: 36px;
}
.footer-brand-desc {
  color: #9CB4CF;
  line-height: 1.8;
  margin: 18px 0 16px;
  max-width: 330px;
  font-size: 14px;
}
.footer .logo-text {
  color: #fff;
}
.footer-title {
  color: #fff;
  font-size: 16px;
  margin-bottom: 16px;
  font-weight: 700;
}
.footer-link li {
  margin-bottom: 10px;
}
.footer-link li a {
  color: #AFC0D2;
  line-height: 1.6;
  transition: all .2s ease;
}
.footer-link li a:hover {
  color: #fff;
}
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: #AFC0D2;
  margin-bottom: 13px;
  line-height: 1.7;
}
.footer-contact li i {
  color: #6FA3E8;
  margin-top: 4px;
}
.footer-qr {
  width: 126px;
  padding: 8px;
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 5px 18px rgba(0, 0, 0, .12);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .09);
  padding-top: 22px;
  margin-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  color: #8197AE;
  font-size: 13px;
}

/* ===== Responsive ===== */
@media (max-width: 1240px) {
  .main-nav {
    gap: 4px;
    padding: 5px;
  }
  .nav-link {
    padding: 8px 11px;
  }
}
@media (max-width: 1100px) {
  .header-tools {
    display: none;
  }
  .hero-chip-first {
    left: -12px;
  }
}
@media (max-width: 1023px) {
  .section {
    padding: 56px 0;
  }
  .process-steps {
    grid-template-columns: repeat(3, 1fr);
  }
  .safety-strip {
    grid-template-columns: repeat(2, 1fr);
  }
  .safety-point:nth-child(2) {
    border-right: 0;
  }
  .safety-point:nth-child(-n+2) {
    border-bottom: 1px solid #EEF2F8;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .scene-wrap {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .scene-media img {
    min-height: auto;
  }
}
@media (max-width: 900px) {
  .main-nav {
    margin-left: auto;
  }
}
@media (max-width: 767px) {
  .header-inner {
    flex-wrap: nowrap;
    padding: 10px 16px;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    left: 16px;
    right: 16px;
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 20px;
    box-shadow: 0 16px 42px rgba(23, 35, 59, .16);
    padding: 14px;
    z-index: 150;
  }
  .main-nav.open {
    display: flex;
  }
  .nav-link {
    padding: 13px 16px;
    width: 100%;
    font-size: 15px;
    background: #F7FAFF;
  }
  .nav-link + .nav-link {
    margin-top: 5px;
  }
  .nav-link.active {
    background: var(--primary-dark);
  }
  .header-tools {
    display: none;
  }
  .hero-category {
    padding: 50px 0 54px;
  }
  .hero-category h1 {
    margin-top: 4px;
  }
  .hero-lead {
    font-size: 15.5px;
  }
  .hero-preview {
    margin: 40px auto 12px;
  }
  .hero-chip-first {
    left: -8px;
  }
  .hero-chip-second {
    right: -6px;
  }
  .anchor-strip {
    grid-template-columns: 1fr 1fr;
  }
  .quick-anchor-wrap {
    margin-top: 28px;
  }
  .safety-strip {
    grid-template-columns: 1fr;
  }
  .safety-point {
    border-right: 0;
    border-bottom: 1px solid #EEF2F8;
  }
  .safety-point:last-child {
    border-bottom: 0;
  }
  .cta-zone {
    padding: 24px 0 60px;
  }
  .cta-box {
    padding: 40px 18px;
    border-radius: 24px;
  }
  .footer {
    padding-top: 44px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}
@media (max-width: 639px) {
  .hero-category .grid-x {
    row-gap: 28px;
  }
  .process-steps {
    grid-template-columns: 1fr;
  }
  .map-card {
    padding: 22px;
  }
  .section-head {
    margin-bottom: 34px;
  }
}

/* roulang page: category3 */
:root {
  --primary: #3B82F6;
  --primary-dark: #2563EB;
  --primary-soft: #EFF6FF;
  --accent: #F59E0B;
  --ok: #12B981;
  --bg-body: #FFFFFF;
  --bg-section: #F7FAFF;
  --card: #FFFFFF;
  --ink-title: #17233B;
  --ink-body: #3D4856;
  --ink-muted: #8492A6;
  --line: #E5EAF2;
  --radius: 12px;
  --radius-lg: 18px;
  --shadow-card: 0 6px 18px rgba(59, 130, 246, .06), 0 1px 4px rgba(15, 23, 42, .04);
  --shadow-hover: 0 16px 34px rgba(59, 130, 246, .12);
  --header-h: 78px;
  --space: clamp(60px, 8vw, 96px);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
  background: var(--bg-body);
  color: var(--ink-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
ul, ol, p, h1, h2, h3, h4, h5, figure, dl, dd { margin: 0; }
ul { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; transition: color .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
.container, .grid-container { max-width: 1200px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }
main { overflow: hidden; }

/* Button system */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  padding: 12px 28px;
  font-weight: 700;
  font-size: 15px;
  line-height: 1;
  border: 1px solid transparent;
  transition: all .2s ease;
  min-height: 44px;
}
.btn i { font-size: 14px; }
.btn-sm { padding: 9px 20px; font-size: 14px; min-height: 40px; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 8px 20px rgba(59, 130, 246, .22); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 12px 28px rgba(37, 99, 235, .26); color: #fff; }
.btn-outline { background: #fff; color: var(--primary); border-color: rgba(59, 130, 246, .4); }
.btn-outline:hover { background: var(--primary-soft); border-color: var(--primary); transform: translateY(-2px); }
.btn-white { background: #fff; color: var(--primary-dark); box-shadow: 0 10px 24px rgba(15, 23, 42, .12); }
.btn-white:hover { background: #F0F6FF; transform: translateY(-2px); color: var(--primary-dark); }
.btn:focus-visible, .nav-link:focus-visible, .faq-q:focus-visible, .menu-toggle:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(229, 234, 242, .7);
  box-shadow: 0 4px 16px rgba(15, 23, 42, .02);
}
.header-inner { display: flex; align-items: center; gap: 20px; min-height: var(--header-h); }
.logo { display: inline-flex; align-items: center; gap: 11px; flex-shrink: 0; }
.logo-mark {
  width: 42px; height: 42px; border-radius: 13px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(145deg, #3B82F6, #2563EB);
  color: #fff; font-size: 20px;
  box-shadow: 0 6px 14px rgba(37, 99, 235, .24);
}
.logo-text { font-size: 20px; font-weight: 800; color: var(--ink-title); letter-spacing: .02em; }
.main-nav { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.nav-link {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 9px 14px; border-radius: 999px;
  color: #33415A; font-weight: 600; font-size: 15px;
  white-space: nowrap;
  position: relative;
}
.nav-link i { color: var(--primary); transition: color .2s ease; }
.nav-link:hover { background: var(--primary-soft); color: var(--primary); }
.nav-link.active { background: var(--primary); color: #fff; box-shadow: 0 8px 18px rgba(59, 130, 246, .28); }
.nav-link.active i { color: #fff; }
.head-cta { display: flex; align-items: center; gap: 10px; margin-left: 10px; }
.menu-toggle { display: none; width: 44px; height: 44px; border-radius: 12px; background: var(--primary-soft); color: var(--primary); font-size: 20px; align-items: center; justify-content: center; }
.mobile-menu { display: none; }
.mobile-menu-card { display: none; }

/* Hero */
.page-hero {
  position: relative;
  padding: clamp(64px, 8vw, 100px) 0 70px;
  background: linear-gradient(135deg, #F7FAFF 0%, #EAF4FF 58%, #E4F0FF 100%);
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  opacity: .16;
  pointer-events: none;
}
.page-hero::after {
  content: "";
  position: absolute; right: -80px; top: -80px;
  width: 320px; height: 320px; border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 130, 246, .18), transparent 66%);
  pointer-events: none;
}
.hero-grid {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1.06fr .94fr; gap: 56px; align-items: center;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 15px; border-radius: 999px 999px 999px 6px;
  background: rgba(255, 255, 255, .9); color: var(--primary-dark);
  font-size: 13px; font-weight: 700;
  border: 1px solid rgba(59, 130, 246, .16);
  box-shadow: 0 6px 16px rgba(59, 130, 246, .08);
  margin-bottom: 20px;
}
.hero-badge i { color: var(--accent); }
h1 {
  font-size: clamp(30px, 4.2vw, 44px);
  line-height: 1.24;
  color: var(--ink-title);
  font-weight: 800;
  letter-spacing: -0.02em;
}
.hero-copy p { margin-top: 22px; font-size: 17px; line-height: 1.9; color: #47586D; max-width: 580px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.hero-proof { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.hero-proof-item {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--ink-muted); font-size: 13px; font-weight: 600;
}
.hero-proof-item i { color: var(--ok); }

/* Hero visual */
.hero-visual { position: relative; }
.browser-card {
  background: #fff;
  border: 1px solid rgba(229, 234, 242, .9);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 28px 60px rgba(37, 99, 235, .16);
  transform: rotate(.6deg);
}
.browser-head {
  display: flex; align-items: center; gap: 8px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
}
.browser-head span {
  width: 9px; height: 9px; border-radius: 50%;
}
.browser-head .d1 { background: #F87171; }
.browser-head .d2 { background: #FBBF24; }
.browser-head .d3 { background: #34D399; }
.browser-head .d4 {
  margin-left: 10px;
  width: auto; height: auto; border-radius: 9px;
  padding: 3px 12px;
  background: #F4F7FB;
  color: #8492A6; font-size: 12px;
}
.browser-thumb { position: relative; aspect-ratio: 16 / 10; }
.browser-thumb img { width: 100%; height: 100%; object-fit: cover; }
.browser-thumb::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 58%, rgba(15, 23, 42, .46));
}
.browser-tag {
  position: absolute; left: 16px; bottom: 14px; z-index: 2;
  color: #fff; font-weight: 800; font-size: 17px;
  background: rgba(23, 35, 59, .4);
  padding: 5px 12px; border-radius: 10px;
  backdrop-filter: blur(4px);
}
.browser-bottom {
  display: flex; align-items: center; justify-content: space-between;
  padding: 13px 18px; color: var(--ink-muted); font-size: 13px;
  font-weight: 600;
}
.browser-bottom i { color: var(--primary); margin-right: 5px; }

/* sections */
.section { padding: var(--space) 0; }
.bg-soft { background: var(--bg-section); }
.section-head { margin-bottom: 36px; }
.section-head.center { text-align: center; max-width: 700px; margin-left: auto; margin-right: auto; }
.section-kicker {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--primary); font-weight: 800; font-size: 14px;
  letter-spacing: .1em;
}
.section-kicker::before {
  content: ""; width: 22px; height: 4px; border-radius: 99px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}
.section-head.center .section-kicker::after { display: none; }
.sec-title { font-size: clamp(26px, 3vw, 34px); font-weight: 800; color: var(--ink-title); margin-top: 8px; line-height: 1.3; }
.sec-sub { font-size: 15.5px; color: var(--ink-muted); margin-top: 12px; max-width: 640px; }

/* topic cards */
.topic-grid { row-gap: 24px; }
.topic-card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 26px 24px; height: 100%;
  box-shadow: var(--shadow-card);
  transition: all .25s ease;
  position: relative;
}
.topic-card::after {
  content: ""; position: absolute; left: 0; top: 20%; bottom: 20%;
  width: 3px; border-radius: 0 6px 6px 0;
  background: transparent; transition: background .2s ease;
}
.topic-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); border-color: rgba(59, 130, 246, .22); }
.topic-card:hover::after { background: var(--primary); }
.topic-icon {
  width: 54px; height: 54px; border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 23px; margin-bottom: 18px;
}
.topic-icon.t1 { background: #FFF6E9; color: #F59E0B; }
.topic-icon.t2 { background: #E9F4FF; color: #3B82F6; }
.topic-icon.t3 { background: #EAF9F3; color: #12B981; }
.topic-icon.t4 { background: #F3EFFF; color: #7C6BE7; }
.topic-card h3 { font-size: 19px; font-weight: 800; color: var(--ink-title); }
.topic-card p { font-size: 13.5px; line-height: 1.75; color: var(--ink-muted); margin: 10px 0 16px; }
.topic-link { font-weight: 700; font-size: 14px; color: var(--primary); display: inline-flex; align-items: center; gap: 5px; }
.topic-link i { transition: transform .2s ease; }
.topic-card:hover .topic-link i { transform: translateX(3px); }

/* event feature grid */
.feature-grid { row-gap: 26px; }
.event-feature {
  height: 100%;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: box-shadow .25s ease, transform .25s ease;
}
.event-feature:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.feature-media { position: relative; aspect-ratio: 16 / 9.5; overflow: hidden; }
.feature-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.event-feature:hover .feature-media img { transform: scale(1.04); }
.media-flag {
  position: absolute; left: 16px; top: 16px;
  background: var(--accent); color: #fff;
  font-size: 12px; font-weight: 800;
  padding: 5px 12px; border-radius: 999px;
  box-shadow: 0 6px 14px rgba(245, 158, 11, .35);
}
.feature-body { padding: 26px 28px 28px; }
.chip { display: inline-flex; align-items: center; gap: 6px; padding: 4px 11px; border-radius: 999px; font-size: 12.5px; font-weight: 700; }
.chip-primary { background: var(--primary-soft); color: var(--primary); }
.chip-soft { background: #FFF3DF; color: #E07B00; }
.feature-body h3 { font-size: 22px; font-weight: 800; color: var(--ink-title); margin: 12px 0 10px; line-height: 1.4; }
.feature-body p { color: #506175; font-size: 15px; line-height: 1.8; }
.feature-meta { display: flex; flex-wrap: wrap; gap: 12px; margin: 18px 0; color: var(--ink-muted); font-size: 13px; }
.feature-meta span { display: inline-flex; align-items: center; gap: 6px; }
.feature-meta i { color: var(--primary); }

/* side event cards */
.side-event-list { display: flex; flex-direction: column; gap: 26px; height: 100%; }
.side-event {
  flex: 1;
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 14px;
  box-shadow: var(--shadow-card);
  transition: all .25s ease;
}
.side-event:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: rgba(59, 130, 246, .2); }
.side-event-img { border-radius: 10px; overflow: hidden; }
.side-event-img img { width: 110px; height: 110px; object-fit: cover; }
.side-event-body { display: flex; flex-direction: column; justify-content: center; }
.side-event-body h3 { font-size: 17px; font-weight: 800; color: var(--ink-title); line-height: 1.5; }
.side-event-body p { font-size: 13px; color: var(--ink-muted); margin-top: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.side-event-time { margin-top: 10px; font-size: 12px; color: var(--ink-muted); }
.side-event-time i { color: var(--primary); margin-right: 4px; }

/* popular game event grid */
.event-grid-card {
  height: 100%;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-card);
  transition: all .25s ease;
}
.event-grid-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
.event-grid-thumb { position: relative; aspect-ratio: 16 / 9.6; overflow: hidden; }
.event-grid-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.event-grid-card:hover .event-grid-thumb img { transform: scale(1.05); }
.thumb-badge {
  position: absolute; left: 14px; top: 14px;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .92);
  color: var(--primary-dark);
  font-size: 12.5px; font-weight: 800;
}
.event-grid-body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.tag-line { display: flex; flex-wrap: wrap; gap: 7px; }
.tag-item {
  background: #F1F5FA;
  color: #4E6485;
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 999px;
  font-weight: 600;
}
.tag-item.hot { background: #FFF1E0; color: #B86100; }
.event-grid-body h3 { font-size: 19px; font-weight: 800; color: var(--ink-title); margin: 12px 0 8px; line-height: 1.45; }
.event-grid-body p { font-size: 14px; line-height: 1.75; color: var(--ink-muted); flex: 1; margin-bottom: 18px; }
.card-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 6px; }
.rate { display: inline-flex; align-items: center; gap: 3px; font-size: 13px; color: #F59E0B; font-weight: 700; }
.event-btn {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--primary); color: #fff;
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 14px; font-weight: 700;
  box-shadow: 0 8px 16px rgba(59, 130, 246, .2);
  transition: all .2s ease;
}
.event-btn:hover { background: var(--primary-dark); color: #fff; transform: translateX(3px); }

/* process section */
.process-section { background: #F7FAFF; border-block: 1px solid #E7EDF6; }
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
  box-shadow: var(--shadow-card);
  position: relative;
}
.step-num {
  width: 44px; height: 44px; margin: 0 auto 14px;
  background: linear-gradient(145deg, #3B82F6, #2563EB);
  color: #fff;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 800;
  box-shadow: 0 8px 18px rgba(37, 99, 235, .2);
}
.step-card h3 { font-size: 18px; font-weight: 800; color: var(--ink-title); }
.step-card p { font-size: 14px; color: var(--ink-muted); line-height: 1.8; margin-top: 10px; }

/* remind */
.remind-box {
  background: linear-gradient(120deg, #EEF6FF, #E7F1FF);
  border: 1px solid rgba(59, 130, 246, .14);
  border-radius: 20px;
  padding: 28px 32px;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  box-shadow: inset 0 0 0 6px rgba(255,255,255,.45), 0 14px 30px rgba(59, 130, 246, .08);
}
.remind-icon {
  width: 60px; height: 60px;
  background: #fff;
  border-radius: 18px;
  color: var(--primary);
  font-size: 25px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 18px rgba(37, 99, 235, .16);
  flex-shrink: 0;
}
.remind-info { flex: 1; min-width: 220px; }
.remind-info h3 { font-size: 22px; color: var(--ink-title); }
.remind-info p { font-size: 15px; color: #4D637B; margin-top: 8px; }

/* faq */
.faq-section { background: #F2F7FC; }
.faq-list { max-width: 940px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: box-shadow .2s ease;
}
.faq-item.open { box-shadow: var(--shadow-hover); border-color: rgba(59, 130, 246, .3); }
.faq-q {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 14px;
  text-align: left;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-title);
}
.faq-q i {
  width: 34px; height: 34px; border-radius: 10px;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; flex-shrink: 0;
}
.faq-a { display: none; padding: 0 24px 22px 72px; }
.faq-a-inner { font-size: 15px; line-height: 1.9; color: #516072; }
.faq-icon {
  margin-left: auto;
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: #F4F7FB;
  color: var(--primary);
  font-size: 15px;
  transition: transform .3s ease, background .2s ease, color .2s;
  flex-shrink: 0;
}
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-more { text-align: center; margin-top: 34px; }
.faq-more a { display: inline-flex; align-items: center; gap: 7px; color: var(--primary-dark); font-weight: 700; }
.faq-more a:hover { color: var(--primary); }

/* CTA */
.cta-section { padding: 30px 0 0; }
.cta-band {
  background: linear-gradient(120deg, #3D8BFD, #2E6FE0);
  border-radius: 24px;
  padding: 60px 36px;
  text-align: center;
  position: relative;
  color: #fff;
  box-shadow: 0 24px 50px rgba(37, 99, 235, .2);
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute;
  top: -100px; right: -80px;
  width: 260px; height: 260px;
  border-radius: 50%;
  border: 30px solid rgba(255,255,255,.08);
  pointer-events: none;
}
.cta-band::after {
  content: "";
  position: absolute;
  bottom: -70px; left: -50px;
  width: 180px; height: 180px;
  border-radius: 50%;
  background: rgba(255,255,255,.07);
  pointer-events: none;
}
.cta-band h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; color: #fff; position: relative; z-index: 1; }
.cta-band p { max-width: 620px; margin: 14px auto 28px; color: #DDEBFF; font-size: 15px; position: relative; z-index: 1; }
.cta-actions { display: flex; justify-content: center; gap: 13px; flex-wrap: wrap; position: relative; z-index: 1; }

/* footer from shared block */
.footer {
  background: #122A44;
  padding-top: 72px;
  margin-top: 96px;
  color: #AFBFD1;
  font-size: 14px;
}
.footer-top-line {
  height: 5px;
  background: linear-gradient(90deg, #122A44, #3B82F6 28%, #F59E0B 72%, #122A44);
  margin-bottom: 46px;
}
.container {}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1.3fr 1.2fr; gap: 42px; }
.footer .logo-text { color: #fff; }
.footer .logo-mark { box-shadow: none; }
.footer-brand-desc { margin: 18px 0 16px; font-size: 14.5px; line-height: 1.9; color: #8FA6BF; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 600;
}
.footer-title {
  font-size: 16px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 18px;
  position: relative;
}
.footer-title::after {
  content: ""; display: block;
  width: 32px; height: 3px; border-radius: 4px;
  background: var(--primary);
  margin-top: 12px;
}
.footer-link li { margin-bottom: 10px; }
.footer-link a, .footer-contact a, .footer-contact { color: #9FB4CA; transition: all .2s; }
.footer-link a { display: inline-flex; gap: 6px; padding: 3px 0; }
.footer-link a:hover { color: #fff; padding-left: 5px; }
.footer-contact li { display: flex; gap: 10px; margin-bottom: 16px; line-height: 1.7; color: #9FB4CA; }
.footer-contact i { color: #6DA9FF; margin-top: 3px; }
.footer-qr { width: 120px; border-radius: 12px; overflow: hidden; border: 1px solid rgba(255, 255, 255, .14); }
.footer-bottom {
  margin-top: 50px;
  border-top: 1px solid rgba(255, 255, 255, .12);
  padding: 23px 0 27px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  font-size: 13px;
  flex-wrap: wrap;
  color: #778FA7;
}
.footer-bottom i { color: #F59E0B; }

@media (max-width: 1023px) {
  .container, .grid-container { padding-left: 20px; padding-right: 20px; }
  .main-nav, .head-cta { display: none; }
  .menu-toggle { display: inline-flex; }
  .header-inner { justify-content: space-between; }
  .mobile-menu { display: block; }
  .mobile-menu-card {
    display: flex; flex-direction: column; gap: 14px;
    position: fixed;
    top: 98px;
    right: 16px; left: 16px;
    z-index: 70;
    background: rgba(255,255,255,.98);
    backdrop-filter: blur(12px);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 20px;
    box-shadow: 0 24px 50px rgba(15, 23, 42, .18);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .2s ease, transform .2s ease;
  }
  .mobile-menu.open .mobile-menu-card { opacity: 1; visibility: visible; transform: translateY(0); }
  .mobile-menu-card .nav-link {
    padding: 14px 18px;
    font-size: 16px;
    border-radius: 14px;
    width: 100%;
    justify-content: flex-start;
  }
  .mobile-menu-card .mobile-nav-list { display: flex; flex-direction: column; gap: 6px; }
  .mobile-menu-card .mobile-cta { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 6px; }
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { max-width: 720px; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .remind-box { flex-direction: column; text-align: center; }
  .remind-info p { margin-right: auto; margin-left: auto; }
  .remind-actions { width: 100%; justify-content: center; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 34px; }
}
@media (max-width: 639px) {
  .container, .grid-container { padding-left: 16px; padding-right: 16px; }
  body { font-size: 15px; }
  .site-header { min-height: 64px; }
  .header-inner { min-height: 64px; gap: 12px; }
  .logo-text { font-size: 18px; }
  .logo-mark { width: 38px; height: 38px; border-radius: 12px; }
  .page-hero { padding: 52px 0 56px; }
  .hero-grid { gap: 38px; }
  .hero-copy p { font-size: 15.5px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  .section { padding: 58px 0; }
  .sec-title { font-size: 24px; }
  .section-kicker { font-size: 12.5px; }
  .steps-grid { grid-template-columns: 1fr; gap: 18px; }
  .side-event { grid-template-columns: 88px 1fr; padding: 11px; }
  .side-event-img img { width: 88px; height: 88px; }
  .remind-box { padding: 24px; border-radius: 16px; }
  .mobile-menu-card { top: 90px; }
  .event-feature-body, .feature-body { padding: 20px; }
  .faq-a { padding: 0 18px 20px 64px; }
  .faq-q { padding: 17px 16px; font-size: 15px; }
  .cta-band { padding: 44px 20px; border-radius: 18px; }
  .cta-actions .btn { width: 100%; }
  .footer { margin-top: 70px; padding-top: 46px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* roulang page: category4 */
:root{
  --primary:#3B82F6;
  --primary-dark:#2563EB;
  --primary-soft:#EFF6FF;
  --accent:#F59E0B;
  --accent-bg:#FFF4E0;
  --bg-body:#FFFFFF;
  --bg-section:#F4F8FE;
  --surface-card:#FFFFFF;
  --ink-title:#17233B;
  --ink-body:#3D4856;
  --ink-muted:#7A8AA5;
  --line:#E5EAF2;
  --safe:#12B981;
  --radius-card:14px;
  --radius-lg:18px;
  --radius-btn:999px;
  --shadow-sm:0 4px 14px rgba(59,130,246,.08);
  --shadow-md:0 12px 30px rgba(59,130,246,.12);
  --shadow-lg:0 18px 44px rgba(59,130,246,.14);
  --font:'PingFang SC','Microsoft YaHei',-apple-system,'Helvetica Neue',sans-serif;
}
*,*::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(--ink-body);
  background:var(--bg-body);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,select,textarea{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section-pd{padding:80px 0}
.section-alt{background:var(--bg-section)}
.section-title{
  font-size:30px;
  font-weight:800;
  color:var(--ink-title);
  letter-spacing:-.5px;
  margin-bottom:10px;
}
.section-sub{
  color:var(--ink-muted);
  font-size:15px;
  margin-bottom:36px;
  max-width:600px;
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  flex-wrap:wrap;
  margin-bottom:32px;
}
.section-head .more-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  border-radius:var(--radius-btn);
  padding:8px 18px;
  background:var(--primary-soft);
  color:var(--primary-dark);
  font-size:14px;
  font-weight:600;
  transition:.2s;
}
.section-head .more-link:hover{
  background:var(--primary);
  color:#fff;
}

/* ===== 公共头部（卡片化导航） ===== */
.header {
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(255,255,255,.6);
  box-shadow:0 6px 24px rgba(44,96,180,.06);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:80px;
  gap:16px;
}
.header-scroll .header-inner{height:64px}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.logo-mark{
  width:40px;height:40px;
  border-radius:12px;
  background:var(--primary);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:19px;
  box-shadow:0 6px 14px rgba(59,130,246,.35);
}
.logo-text{
  font-weight:800;
  font-size:20px;
  color:var(--ink-title);
  letter-spacing:.5px;
}
.nav-wrap{
  background:#fff;
  border:1px solid var(--line);
  border-radius:999px;
  padding:6px 8px;
  display:flex;
  align-items:center;
  gap:2px;
  box-shadow:var(--shadow-sm);
  flex-wrap:wrap;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:2px;
}
.nav-link{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:9px 15px;
  border-radius:999px;
  font-size:14px;
  font-weight:600;
  color:#334155;
  transition:all .22s;
  white-space:nowrap;
}
.nav-link:hover{
  background:var(--primary-soft);
  color:var(--primary-dark);
}
.nav-link.active{
  background:var(--primary);
  color:#fff;
  box-shadow:0 4px 12px rgba(59,130,246,.35);
}
.nav-link i{font-size:13px;opacity:.8}
.nav-link.active i{opacity:1}
.header-cta{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--radius-btn);
  padding:9px 20px;
  font-size:14px;
  font-weight:600;
  transition:all .2s ease;
  border:1px solid transparent;
  white-space:nowrap;
}
.btn-primary{
  background:var(--primary);
  color:#fff;
  box-shadow:0 4px 12px rgba(59,130,246,.25);
}
.btn-primary:hover{
  background:var(--primary-dark);
  transform:translateY(-1px);
  box-shadow:0 8px 20px rgba(59,130,246,.35);
}
.btn-outline{
  background:#fff;
  color:var(--primary);
  border-color:var(--primary);
}
.btn-outline:hover{
  background:var(--primary-soft);
}
.btn-white{
  background:#fff;
  color:var(--primary-dark);
}
.btn-white:hover{
  background:var(--primary-soft);
  transform:translateY(-1px);
  box-shadow:var(--shadow-md);
}
.btn-lg{padding:13px 32px;font-size:16px}
.btn-accent{
  background:var(--accent);
  color:#fff;
  box-shadow:0 5px 16px rgba(245,158,11,.3);
}
.btn-accent:hover{
  transform:translateY(-1px);
  background:#e78a08;
}
.fa-arrow-right{font-size:12px;transition:transform .2s}
.btn:hover .fa-arrow-right{transform:translateX(3px)}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  background:var(--primary-soft);
  color:var(--primary-dark);
  align-items:center;
  justify-content:center;
  font-size:20px;
}

/* ===== Hero区域 ===== */
.download-hero{
  background:linear-gradient(130deg,#EAF3FF 0%,#DFEDFF 50%,#F2F6FC 100%);
  position:relative;
  overflow:hidden;
  padding:90px 0 70px;
}
.download-hero::before{
  content:'';
  position:absolute;
  width:420px;height:420px;
  background:radial-gradient(circle,rgba(255,255,255,.65),transparent 70%);
  top:-40px;right:60px;
  border-radius:50%;
}
.download-hero::after{
  content:'';
  position:absolute;
  width:280px;height:280px;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity:.08;
  bottom:0;left:0;
  border-radius:20px 0 0 0;
}
.hero-grid{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:48px;
  align-items:center;
  position:relative;
  z-index:2;
}
.hero-content .hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(255,255,255,.7);
  color:var(--primary-dark);
  border:1px solid rgba(255,255,255,.9);
  padding:6px 16px;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  margin-bottom:20px;
}
.hero-title{
  font-size:40px;
  line-height:1.3;
  font-weight:800;
  color:var(--ink-title);
  margin-bottom:16px;
  letter-spacing:-1px;
}
.hero-title .text-accent{
  color:var(--primary);
  position:relative;
}
.hero-desc{
  font-size:16px;
  color:#5B6B82;
  max-width:520px;
  margin-bottom:28px;
  line-height:1.9;
}
.hero-ctas{
  display:flex;
  align-items:center;
  gap:14px;
  flex-wrap:wrap;
  margin-bottom:24px;
}
.hero-safe-tips{
  display:flex;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:#76879E;
}
.hero-safe-tips span{
  display:inline-flex;
  align-items:center;
  gap:5px;
}
.hero-safe-tips i{color:var(--safe);font-size:14px}
.hero-visual{
  background:#fff;
  border-radius:var(--radius-lg);
  padding:18px;
  box-shadow:var(--shadow-lg);
  border:1px solid rgba(255,255,255,.9);
}
.download-stage{
  background:linear-gradient(145deg,#1B3A66,#122A44);
  border-radius:14px;
  overflow:hidden;
  position:relative;
  min-height:280px;
  display:flex;
  flex-direction:column;
}
.download-stage-top{
  padding:18px 20px;
  background:rgba(255,255,255,.08);
  display:flex;
  align-items:center;
  gap:12px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.dot-group{display:flex;gap:6px}
.dot{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.25)}
.dot.red{background:#FF5F57}
.dot.yellow{background:#FEBC2E}
.dot.green{background:#28C840}
.stage-search{
  flex:1;
  height:32px;
  border-radius:8px;
  background:rgba(255,255,255,.15);
  border:1px solid rgba(255,255,255,.08);
  padding:0 12px;
  font-size:12px;
  color:rgba(255,255,255,.8);
  display:flex;
  align-items:center;
  gap:6px;
}
.stage-content{
  padding:24px 22px;
  display:flex;
  flex-direction:column;
  gap:12px;
  flex:1;
}
.stage-title{
  color:#fff;
  font-size:20px;
  font-weight:700;
}
.stage-toolbar{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}
.tool-chip{
  padding:6px 14px;
  border-radius:999px;
  font-size:12px;
  background:rgba(255,255,255,.12);
  color:rgba(255,255,255,.86);
  border:1px solid rgba(255,255,255,.1);
}
.download-progress{
  margin-top:8px;
  background:rgba(255,255,255,.12);
  border-radius:8px;
  height:8px;
  overflow:hidden;
}
.download-progress span{
  display:block;
  height:100%;
  width:72%;
  background:linear-gradient(90deg,#38BDF8,#3B82F6);
  border-radius:8px;
}
.stage-btns{
  display:flex;
  gap:10px;
  margin-top:auto;
}
.stage-btn{
  flex:1;
  padding:10px;
  text-align:center;
  border-radius:8px;
  font-size:13px;
  font-weight:600;
}
.stage-btn-main{background:var(--primary);color:#fff}
.stage-btn-soft{background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.2)}
.hero-stats{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-top:14px;
  background:rgba(59,130,246,.04);
  border-radius:10px;
  padding:12px 16px;
  border:1px solid var(--line);
}
.hero-stat{text-align:center}
.hero-stat b{
  font-size:20px;
  font-weight:800;
  color:var(--ink-title);
  display:block;
  line-height:1.2;
}
.hero-stat i{
  font-style:normal;
  font-size:12px;
  color:var(--ink-muted);
}
.hero-tabbar{
  margin-top:50px;
  display:flex;
  gap:14px;
  flex-wrap:wrap;
  justify-content:center;
  position:relative;
  z-index:3;
}
.hero-tab{
  flex:1;
  min-width:170px;
  background:#fff;
  border-radius:14px;
  padding:18px 22px;
  display:flex;
  align-items:center;
  gap:14px;
  box-shadow:var(--shadow-sm);
  border:1px solid #fff;
  cursor:pointer;
  transition:.25s;
}
.hero-tab:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-md);
}
.hero-tab-icon{
  width:44px;height:44px;
  flex-shrink:0;
  border-radius:13px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:18px;
}
.hero-tab-icon.t-blue{background:#E2EFFF;color:#2E6FE0}
.hero-tab-icon.t-orange{background:#FFF2D8;color:#D98C07}
.hero-tab-icon.t-green{background:#E1F7EF;color:#0DA574}
.hero-tab b{
  display:block;
  font-size:14px;
  color:var(--ink-title);
  margin-bottom:2px;
}
.hero-tab span{font-size:12px;color:var(--ink-muted)}

/* ===== 面包屑小条 ===== */
.page-breadcrumb{
  background:var(--bg-body);
  padding:14px 0;
  border-bottom:1px solid var(--line);
  font-size:13px;
  color:var(--ink-muted);
}
.page-breadcrumb a{color:var(--primary)}
.page-breadcrumb a:hover{color:var(--primary-dark)}
.page-breadcrumb .sep{margin:0 8px;color:#B8C6DA}

/* ===== 搜索下载 / 热门游戏下载 ===== */
.download-search-section{
  margin-top:46px;
  border-radius:var(--radius-lg);
  background:linear-gradient(120deg,#F1F7FF,#E9F2FE);
  padding:34px;
  display:flex;
  align-items:center;
  gap:24px;
  border:1px solid #DBE9FE;
  flex-wrap:wrap;
  justify-content:space-between;
}
.search-title h3{
  font-size:20px;
  font-weight:700;
  color:var(--ink-title);
  margin-bottom:4px;
}
.search-title p{font-size:14px;color:var(--ink-muted)}
.search-input-group{
  display:flex;
  background:#fff;
  border-radius:var(--radius-btn);
  padding:5px;
  box-shadow:var(--shadow-md);
  min-width:360px;
  border:1px solid #fff;
}
.search-input-group input{
  flex:1;
  border:none;
  outline:none;
  padding:8px 16px;
  font-size:14px;
  color:var(--ink-title);
  background:transparent;
  border-radius:var(--radius-btn);
}
.search-input-group .btn{
  border-radius:var(--radius-btn);
  padding:9px 24px;
}

/* ===== 下载卡片大图 ===== */
.download-grid-b{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:24px;
}
.d-grid-6{grid-column:span 6}
.d-grid-3{grid-column:span 3}
.d-grid-4{grid-column:span 4}
.d-grid-12{grid-column:span 12}
.download-card{
  background:#fff;
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  border:1px solid var(--line);
  transition:all .28s ease;
  position:relative;
}
.download-card:hover{
  transform:translateY(-5px);
  box-shadow:var(--shadow-md);
}
.download-card-img{
  position:relative;
  overflow:hidden;
  border-radius:0;
}
.download-card-img img{
  width:100%;
  height:360px;
  object-fit:cover;
  transition:transform .45s ease;
}
.download-card:hover .download-card-img img{
  transform:scale(1.05);
}
.download-card-img::after{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 55%,rgba(10,24,49,.28));
  opacity:.8;
  transition:.3s;
}
.download-card:hover .download-card-img::after{
  opacity:1;
}
.card-badge{
  position:absolute;
  top:14px;left:14px;
  z-index:2;
  background:rgba(255,255,255,.92);
  border-radius:8px;
  padding:5px 13px;
  font-size:12px;
  font-weight:600;
  color:var(--primary-dark);
}
.card-badge.hot{
  background:#FFE8AE;
  color:#A76C00;
}
.card-badge.new{
  background:#DDF6EA;
  color:#0B8A5C;
}
.card-download-info{
  position:absolute;
  right:14px;bottom:10px;
  z-index:2;
}
.btn-card{
  background:#fff;
  border-radius:999px;
  padding:7px 17px;
  font-size:13px;
  font-weight:700;
  color:var(--primary-dark);
  display:inline-flex;
  align-items:center;
  gap:5px;
  box-shadow:0 4px 14px rgba(0,0,0,.15);
  transition:.2s;
  border:none;
}
.btn-card:hover{background:var(--primary);color:#fff}
.download-card-body{padding:22px}
.download-card-body h3{
  font-size:20px;
  font-weight:700;
  color:var(--ink-title);
  margin-bottom:8px;
}
.download-card-body p{
  font-size:14px;
  color:var(--ink-muted);
  line-height:1.7;
  margin:0 0 14px;
}
.card-meta{
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:4px;
  font-size:12px;
  padding:4px 11px;
  border-radius:999px;
  background:var(--primary-soft);
  color:var(--primary-dark);
  font-weight:500;
}
.tag.orange{background:var(--accent-bg);color:#B27A08}
.tag.green{background:#E2F6EE;color:#0E9C69}
.tag.gray{background:#F1F3F7;color:#72809B}
.game-size{
  margin-left:auto;
  font-size:12px;
  color:var(--ink-muted);
}

/* ===== 特色精选 ===== */
.feature-card-img{
  height:90px;
  background:linear-gradient(135deg,#EDF4FF,#DCEBFC);
  display:flex;
  align-items:center;
  justify-content:center;
  color:#2E6FE0;
  font-size:34px;
  position:relative;
  overflow:hidden;
}
.feature-card-img::before{
  content:'';
  position:absolute;
  width:180px;height:180px;
  border-radius:50%;
  background:rgba(59,130,246,.1);
  top:-60px;left:-40px;
}
.feature-card-img i{position:relative;z-index:2}

/* ===== 版本下载列表 ===== */
.version-list{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.version-item{
  display:flex;
  align-items:center;
  gap:16px;
  background:#fff;
  border-radius:14px;
  padding:18px 20px;
  box-shadow:var(--shadow-sm);
  border:1px solid var(--line);
  transition:.25s;
  cursor:pointer;
}
.version-item:hover{
  border-color:#93C2F4;
  box-shadow:var(--shadow-md);
  transform:translateY(-2px);
}
.version-icon{
  width:52px;height:52px;
  flex-shrink:0;
  border-radius:15px;
  background:var(--primary);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:22px;
}
.version-icon.android{background:#3BB06B}
.version-icon.ios{background:#64748B}
.version-icon.pc{background:#D98C07}
.version-info{flex:1}
.version-info b{
  font-size:15px;
  color:var(--ink-title);
  display:block;
  margin-bottom:2px;
}
.version-info span{
  font-size:12px;
  color:var(--ink-muted);
}
.btn-download{
  width:38px;height:38px;
  border-radius:50%;
  background:var(--primary-soft);
  color:var(--primary-dark);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:14px;
  transition:.2s;
  flex-shrink:0;
}
.version-item:hover .btn-download{
  background:var(--primary);
  color:#fff;
}

/* ===== 下载常见问题 ===== */
.faq-wrap{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
}
.faq-item{
  background:#fff;
  border-radius:var(--radius-card);
  padding:24px;
  border:1px solid var(--line);
  box-shadow:var(--shadow-sm);
  transition:.25s;
}
.faq-item:hover{
  box-shadow:var(--shadow-md);
  border-color:#C5DDF8;
}
.faq-q{
  display:flex;
  align-items:flex-start;
  gap:12px;
  font-size:16px;
  font-weight:700;
  color:var(--ink-title);
  line-height:1.5;
  margin-bottom:8px;
}
.faq-q-icon{
  width:30px;height:30px;
  flex-shrink:0;
  border-radius:9px;
  background:var(--primary-soft);
  color:var(--primary-dark);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:14px;
  font-weight:800;
}
.faq-a{
  margin-left:42px;
  font-size:14px;
  color:#66788F;
  line-height:1.8;
}

/* ===== CTA ===== */
.cta-section{
  padding:50px 0 90px;
}
.cta-banner{
  background:linear-gradient(120deg,#4D97FF,#2E6FE0 60%,#2563EB);
  border-radius:20px;
  padding:56px 60px;
  text-align:center;
  position:relative;
  overflow:hidden;
  box-shadow:0 20px 45px rgba(37,99,235,.25);
}
.cta-banner::before{
  content:'';
  position:absolute;
  width:400px;height:400px;
  background:radial-gradient(circle,rgba(255,255,255,.15),transparent 65%);
  top:-180px;right:-100px;
  border-radius:50%;
}
.cta-banner::after{
  content:'';
  position:absolute;
  width:260px;height:260px;
  background:radial-gradient(circle,rgba(255,255,255,.12),transparent 65%);
  bottom:-150px;left:-60px;
  border-radius:50%;
}
.cta-banner h2{
  font-size:30px;
  color:#fff;
  font-weight:800;
  margin-bottom:8px;
  position:relative;
  z-index:2;
}
.cta-banner p{
  color:rgba(255,255,255,.9);
  font-size:15px;
  margin-bottom:28px;
  position:relative;
  z-index:2;
}
.cta-banner .cta-btns{
  position:relative;
  z-index:2;
  display:flex;
  gap:14px;
  justify-content:center;
  flex-wrap:wrap;
}

/* ===== 下载步骤 ===== */
.steps-row{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  counter-reset:step;
}
.step-item{
  background:#fff;
  border:1px solid var(--line);
  box-shadow:var(--shadow-sm);
  border-radius:16px;
  padding:28px 22px;
  text-align:center;
  position:relative;
  transition:.25s;
}
.step-item:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
}
.step-icon{
  width:56px;height:56px;
  border-radius:18px;
  background:var(--primary-soft);
  color:var(--primary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:24px;
  margin:0 auto 18px;
  position:relative;
}
.step-icon::after{
  counter-increment:step;
  content:counter(step);
  position:absolute;
  top:-8px;right:-8px;
  background:var(--accent);
  color:#fff;
  width:24px;height:24px;
  border-radius:50%;
  font-size:12px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 3px 8px rgba(245,158,11,.3);
}
.step-item b{
  display:block;
  font-size:16px;
  color:var(--ink-title);
  margin-bottom:6px;
}
.step-item span{
  font-size:13px;
  color:var(--ink-muted);
  line-height:1.7;
}

/* ====== 页脚 ===== */
.footer{
  background:#122A44;
  color:#C2D0E2;
  position:relative;
  border-radius:28px 28px 0 0;
  margin-top:40px;
  overflow:hidden;
}
.footer::before{
  content:'';
  height:4px;
  background:linear-gradient(90deg,var(--primary),#60A5FA,var(--accent),var(--primary));
  position:absolute;
  top:0;left:0;right:0;
}
.footer-top-line{height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent)}
.container{padding:0 24px}
.footer .container{padding-top:52px;padding-bottom:30px}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1.2fr 1fr;
  gap:44px;
  padding-bottom:38px;
}
.footer-brand .logo-text{color:#fff}
.footer-brand-desc{
  font-size:13.5px;
  color:#8FA6BF;
  line-height:1.85;
  margin:18px 0 16px;
  max-width:320px;
}
.chip{
  display:inline-flex;
  gap:5px;
  padding:5px 12px;
  border-radius:999px;
  font-size:12px;
  align-items:center;
}
.footer-title{
  font-size:15px;
  color:#fff;
  font-weight:700;
  margin-bottom:20px;
  letter-spacing:.3px;
}
.footer-link li{
  margin-bottom:10px;
}
.footer-link a{
  color:#AFC1D7;
  font-size:14px;
  transition:.2s;
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.footer-link a:hover{
  color:#7EB6FF;
  transform:translateX(4px);
}
.footer-contact li{
  display:flex;
  gap:8px;
  font-size:13.5px;
  align-items:flex-start;
  margin-bottom:14px;
  line-height:1.5;
  color:#AFC1D7;
}
.footer-contact i{
  color:#5E86B5;
  padding-top:2px;
  width:20px;
  text-align:center;
}
.footer-qr{
  width:110px;
  border-radius:12px;
  overflow:hidden;
  border:2px solid rgba(255,255,255,.18);
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:8px;
  border-top:1px solid rgba(255,255,255,.1);
  padding-top:24px;
  font-size:13px;
  color:#789;
}

/* ===== 动画 ===== */
@keyframes fadeUp{
  from{opacity:0;transform:translateY(18px)}
  to{opacity:1;transform:translateY(0)}
}
.animate-fade-up{
  animation:fadeUp .55s ease-out both;
}
.delay-1{animation-delay:.1s}
.delay-2{animation-delay:.2s}

/* ===== 响应式断点 ===== */
@media screen and (max-width:1023px){
  .section-pd{padding:62px 0}
  .nav-wrap{
    display:none;
  }
  .nav-wrap.open{
    display:block;
    position:absolute;
    top:calc(100% + 10px);
    left:16px;right:16px;
    background:#fff;
    border-radius:18px;
    box-shadow:0 20px 45px rgba(30,64,120,.2);
    border:1px solid var(--line);
    padding:14px;
  }
  .main-nav{
    flex-direction:column;
    align-items:stretch;
  }
  .nav-link{
    padding:12px 16px;
    border-radius:12px;
    justify-content:flex-start;
  }
  .nav-toggle{
    display:flex;
  }
  .header-cta .btn-outline{display:none}
  .hero-title{font-size:34px}
  .hero-visual{margin-top:10px}
  .download-grid-b .d-lg-6{grid-column:span 6}
  .d-lg-4{grid-column:span 6}
  .d-md-4{grid-column:span 6}
  .d-md-3{grid-column:span 4}
  .version-list{grid-template-columns:repeat(2,1fr)}
  .steps-row{grid-template-columns:repeat(2,1fr)}
  .faq-wrap{grid-template-columns:repeat(1,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero-tabbar{flex-direction:column}
  .hero-tab{min-width:auto}
}
@media screen and (max-width:639px){
  .section-pd{padding:46px 0}
  .container{padding:0 16px}
  .header-cta .btn-outline{display:none}
  .header-inner{height:68px}
  .logo-text{font-size:17px}
  .logo-mark{width:34px;height:34px;font-size:15px;border-radius:10px}
  .btn{padding:8px 14px;font-size:13px}
  .hero-title{font-size:28px;margin-bottom:10px}
  .hero-desc{font-size:15px}
  .download-hero{padding:50px 0}
  .hero-ctas{flex-direction:column}
  .hero-ctas .btn{width:100%}
  .hero-visual{display:flex;flex-direction:column}
  .download-stage{min-height:220px}
  .stage-content{padding:18px}
  .hero-stats{margin-top:10px}
  .hero-tabbar{margin-top:26px}
  .hero-tab{padding:13px 15px}
  .section-title{font-size:25px}
  .search-input-group{min-width:0;width:100%}
  .download-search-section{padding:22px}
  .download-grid-b{display:block}
  .download-grid-b>*{margin-bottom:20px}
  .download-card-img img{height:240px}
  .card-meta{flex-direction:column;align-items:flex-start}
  .version-list{grid-template-columns:1fr}
  .steps-row{grid-template-columns:1fr}
  .d-grid-6,.d-grid-3,.d-grid-4{grid-column:span 12}
  .cta-banner{padding:34px 22px}
  .cta-banner h2{font-size:24px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;text-align:center}
  .footer .container{padding-top:40px}
}