/* roulang page: index */
/* ========== 设计变量 ========== */
:root{
  --bg-primary:#050B1E;
  --bg-secondary:#0A1633;
  --brand-blue:#00B4FF;
  --brand-orange:#FF7A1A;
  --brand-orange-light:#FF9D45;
  --success-green:#00E58A;
  --warning-gold:#FFC63D;
  --text-primary:#F0F6FF;
  --text-secondary:#94A3B8;
  --text-muted:#64748B;
  --glass-bg:rgba(255,255,255,0.04);
  --glass-hover:rgba(255,255,255,0.08);
  --glass-border:rgba(255,255,255,0.10);
  --glass-blur:blur(16px);
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --radius-pill:999px;
  --shadow-card:0 10px 30px rgba(0,0,0,0.25);
  --shadow-hover:0 16px 40px rgba(0,0,0,0.35);
  --glow-blue:0 0 24px rgba(0,180,255,0.35);
  --glow-orange:0 0 24px rgba(255,122,26,0.35);
  --transition-base:all 0.3s cubic-bezier(0.4,0,0.2,1);
  --container-max:1200px;
  --nav-h:72px;
}

/* ========== Reset & 基础 ========== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.7;color:var(--text-primary);
  background:linear-gradient(180deg,var(--bg-primary) 0%,var(--bg-secondary) 100%);
  min-height:100vh;-webkit-font-smoothing:antialiased;
}
a{color:var(--brand-blue);text-decoration:none;transition:var(--transition-base)}
a:hover{color:var(--brand-blue)}
img{max-width:100%;display:block}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;border:none;outline:none;background:none}
button{cursor:pointer}
i{line-height:1}

/* ========== 容器 / 板块 ========== */
.container{max-width:var(--container-max);margin:0 auto;padding:0 24px}
.section{padding:80px 0;position:relative}
.section-head{text-align:center;margin-bottom:48px}
.section-head .section-tag{display:inline-block;font-size:13px;font-weight:500;color:var(--brand-blue);letter-spacing:.04em;background:rgba(0,180,255,.1);border:1px solid rgba(0,180,255,.25);padding:4px 16px;border-radius:var(--radius-pill);margin-bottom:12px}
.section-head h2{font-size:34px;font-weight:700;line-height:1.25;color:var(--text-primary);margin-bottom:10px}
.section-head p{font-size:15px;color:var(--text-secondary);max-width:640px;margin:0 auto}

/* ========== 玻璃卡片 ========== */
.glass{
  background:var(--glass-bg);
  backdrop-filter:var(--glass-blur);
  -webkit-backdrop-filter:var(--glass-blur);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-lg);
  transition:var(--transition-base);
}
.glass:hover{
  background:var(--glass-hover);
  border-color:rgba(255,255,255,0.16);
  box-shadow:var(--shadow-hover);
  transform:translateY(-4px);
}
@supports not (backdrop-filter:blur(16px)){
  .glass{background:rgba(10,20,40,0.85)}
}

/* ========== 按钮 ========== */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:linear-gradient(135deg,var(--brand-orange),var(--brand-orange-light));
  color:#0A0F1F;font-weight:600;font-size:15px;height:48px;line-height:48px;
  padding:0 32px;border-radius:10px;cursor:pointer;white-space:nowrap;
  box-shadow:var(--glow-orange);transition:var(--transition-base);text-decoration:none;
}
.btn-primary:hover{
  color:#0A0F1F;transform:translateY(-2px);
  box-shadow:0 0 32px rgba(255,122,26,0.45);text-decoration:none;
}
.btn-primary:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(0,180,255,0.4)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 16px rgba(255,122,26,0.3)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.15);
  color:var(--text-primary);font-weight:500;font-size:15px;height:48px;line-height:48px;
  padding:0 28px;border-radius:10px;cursor:pointer;white-space:nowrap;
  transition:var(--transition-base);text-decoration:none;
}
.btn-ghost:hover{background:rgba(255,255,255,0.10);color:#fff;transform:translateY(-2px);text-decoration:none}
.btn-ghost:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(0,180,255,0.4)}
.btn-ghost:active{transform:translateY(0)}
.btn-lg{height:56px;line-height:56px;padding:0 40px;font-size:17px;border-radius:12px}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand-blue);
  font-size:14px;font-weight:500;transition:var(--transition-base);text-decoration:none;
}
.btn-link i{transition:transform 0.3s cubic-bezier(0.4,0,0.2,1)}
.btn-link:hover{color:var(--brand-blue);text-decoration:none}
.btn-link:hover i{transform:translateX(4px)}

/* ========== 徽章 / 标签 ========== */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:500;padding:4px 12px;border-radius:var(--radius-pill);letter-spacing:.02em}
.badge-blue{background:rgba(0,180,255,0.12);color:var(--brand-blue);border:1px solid rgba(0,180,255,0.25)}
.badge-orange{background:rgba(255,122,26,0.12);color:var(--brand-orange);border:1px solid rgba(255,122,26,0.25)}
.badge-gold{background:rgba(255,198,61,0.12);color:var(--warning-gold);border:1px solid rgba(255,198,61,0.25)}
.badge-green{background:rgba(0,229,138,0.12);color:var(--success-green);border:1px solid rgba(0,229,138,0.25)}
.dot{display:inline-block;width:6px;height:6px;border-radius:50%}
.dot-green{background:var(--success-green);box-shadow:0 0 8px rgba(0,229,138,0.8)}
.dot-orange{background:var(--brand-orange);box-shadow:0 0 8px rgba(255,122,26,0.8)}
.dot-blue{background:var(--brand-blue);box-shadow:0 0 8px rgba(0,180,255,0.8)}

/* ========== 顶部导航 ========== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--nav-h);
  background:rgba(5,11,30,0.60);backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(255,255,255,0.06);
  transition:var(--transition-base);
}
.site-header.scrolled{
  background:rgba(5,11,30,0.88);box-shadow:0 8px 32px rgba(0,0,0,0.3);
}
.nav-wrap{max-width:var(--container-max);height:var(--nav-h);margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand-logo{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0}
.brand-icon{
  width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand-blue),#0077B6);color:#fff;font-size:18px;
  box-shadow:var(--glow-blue);
}
.brand-text{display:flex;align-items:baseline;gap:6px;line-height:1}
.brand-name{font-size:18px;font-weight:400;color:var(--text-primary);letter-spacing:.02em}
.brand-sub{font-size:18px;font-weight:700;color:var(--brand-blue);letter-spacing:.02em}
.nav-center{display:flex;align-items:center;gap:4px}
.nav-center a{
  position:relative;display:block;padding:8px 16px;font-size:15px;color:var(--text-secondary);
  border-radius:8px;transition:var(--transition-base);text-decoration:none;font-weight:400;
}
.nav-center a:hover{color:var(--text-primary);background:rgba(255,255,255,0.06);text-decoration:none}
.nav-center a.active{color:var(--text-primary);font-weight:500}
.nav-center a.active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:2px;height:2px;
  background:var(--brand-blue);border-radius:2px;box-shadow:var(--glow-blue);
}
.nav-right{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-search{
  display:flex;align-items:center;gap:8px;height:38px;width:180px;
  background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.10);
  border-radius:8px;padding:0 10px 0 12px;transition:var(--transition-base);
}
.nav-search i.fa-search{font-size:13px;color:var(--text-muted)}
.nav-search input{flex:1;min-width:0;font-size:13px;color:var(--text-primary);background:transparent;border:none;outline:none}
.nav-search input::placeholder{color:var(--text-muted)}
.nav-search:focus-within{
  width:260px;border-color:rgba(0,180,255,0.5);
  box-shadow:0 0 0 3px rgba(0,180,255,0.15);
}
.search-kbd{
  font-size:11px;color:var(--text-muted);background:rgba(255,255,255,0.08);
  border:1px solid rgba(255,255,255,0.10);border-radius:4px;padding:2px 5px;
  font-family:"Inter",sans-serif;white-space:nowrap;
}
.nav-login{font-size:14px;color:var(--text-secondary);padding:6px 10px;border-radius:8px;transition:var(--transition-base);text-decoration:none}
.nav-login:hover{color:var(--brand-blue);background:rgba(0,180,255,0.08);text-decoration:none}
.nav-cta{
  display:inline-flex;align-items:center;gap:6px;height:38px;line-height:38px;padding:0 18px;
  font-size:14px;font-weight:600;color:#0A0F1F;background:linear-gradient(135deg,var(--brand-orange),var(--brand-orange-light));
  border-radius:8px;box-shadow:var(--glow-orange);transition:var(--transition-base);text-decoration:none;
}
.nav-cta:hover{color:#0A0F1F;transform:translateY(-1px);box-shadow:0 0 28px rgba(255,122,26,0.45);text-decoration:none}
.nav-toggle{display:none;width:42px;height:42px;border-radius:8px;background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.10);flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-primary);border-radius:2px;transition:var(--transition-base)}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-menu{
  position:fixed;top:var(--nav-h);right:0;bottom:0;z-index:999;width:280px;
  background:rgba(5,11,30,0.97);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-left:1px solid rgba(255,255,255,0.08);padding:24px;
  transform:translateX(105%);transition:transform 0.35s cubic-bezier(0.4,0,0.2,1);
  display:flex;flex-direction:column;gap:16px;
}
.mobile-menu.open{transform:translateX(0)}
.mobile-menu a{display:block;padding:12px 14px;font-size:15px;color:var(--text-secondary);border-radius:8px;transition:var(--transition-base);text-decoration:none}
.mobile-menu a:hover{color:var(--text-primary);background:rgba(255,255,255,0.06);text-decoration:none}
.mobile-menu a.active{color:var(--brand-blue);background:rgba(0,180,255,0.08);font-weight:500}
.mobile-menu .mobile-search{display:flex;align-items:center;gap:8px;height:42px;background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.10);border-radius:8px;padding:0 12px;margin-bottom:8px}
.mobile-menu .mobile-search input{flex:1;font-size:14px;color:var(--text-primary)}
.mobile-menu .mobile-search input::placeholder{color:var(--text-muted)}
.mobile-actions{display:flex;gap:12px;margin-top:auto}
.mobile-actions .btn-primary,.mobile-actions .btn-ghost{flex:1;height:44px;line-height:44px;font-size:14px}

/* ========== Hero ========== */
.hero{
  position:relative;min-height:78vh;display:flex;align-items:center;text-align:center;
  background:linear-gradient(180deg,rgba(5,11,30,0.4) 0%,rgba(5,11,30,0.85) 100%),url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  padding:120px 0 80px;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(ellipse at 80% 20%,rgba(0,180,255,0.15),transparent 60%),
             radial-gradient(ellipse at 20% 80%,rgba(255,122,26,0.10),transparent 50%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:840px;margin:0 auto}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:500;color:var(--text-primary);
  background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.15);
  padding:6px 18px;border-radius:var(--radius-pill);margin-bottom:24px;
}
.hero h1{
  font-size:54px;font-weight:800;line-height:1.15;color:var(--text-primary);
  letter-spacing:.02em;margin-bottom:20px;text-shadow:0 4px 24px rgba(0,0,0,0.4);
}
.hero-sub{
  max-width:680px;margin:0 auto 36px;text-align:center;position:relative;padding-left:18px;
}
.hero-sub p{
  font-size:17px;line-height:1.8;color:var(--text-secondary);
  text-align:left;
}
.hero-sub::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:4px;
  background:linear-gradient(180deg,var(--brand-blue),var(--brand-orange));
  border-radius:2px;
}
.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.hero-focus-card{
  position:absolute;right:32px;bottom:32px;z-index:3;min-width:220px;
  padding:16px 20px;border-radius:14px;
}
.hero-focus-card .focus-row{display:flex;align-items:center;gap:10px;padding:5px 0;font-size:13px;color:var(--text-secondary)}
.hero-focus-card .focus-row strong{margin-left:auto;font-size:15px;color:var(--text-primary);font-family:"Inter","DIN Alternate",sans-serif}

/* ========== 实时数据条 ========== */
.data-bar{
  position:relative;z-index:5;margin-top:-50px;padding-bottom:10px;
}
.data-bar .row{max-width:var(--container-max);margin:0 auto}
.stat-card{
  display:flex;align-items:center;gap:16px;padding:22px 24px;
  border-radius:var(--radius-lg);background:var(--glass-bg);
  backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  border:1px solid var(--glass-border);
  box-shadow:var(--shadow-card);
  transition:var(--transition-base);
}
.stat-card:hover{
  background:var(--glass-hover);border-color:rgba(255,255,255,0.16);
  box-shadow:var(--shadow-hover);transform:translateY(-4px);
}
.stat-icon{
  width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:20px;flex-shrink:0;
}
.stat-icon.blue{background:rgba(0,180,255,0.12);color:var(--brand-blue);border:1px solid rgba(0,180,255,0.2)}
.stat-icon.orange{background:rgba(255,122,26,0.12);color:var(--brand-orange);border:1px solid rgba(255,122,26,0.2)}
.stat-icon.green{background:rgba(0,229,138,0.12);color:var(--success-green);border:1px solid rgba(0,229,138,0.2)}
.stat-info{min-width:0}
.stat-info .stat-label{font-size:13px;color:var(--text-secondary)}
.stat-info .stat-value{font-size:24px;font-weight:700;color:var(--text-primary);font-family:"Inter","DIN Alternate",sans-serif;line-height:1.2}
.stat-info .stat-value small{font-size:13px;font-weight:400;color:var(--text-muted)}
.stat-live{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--success-green);margin-top:2px}

/* ========== 玩法介绍 ========== */
.step-grid{margin-top:48px}
.step-card{
  position:relative;height:100%;padding:32px 28px 28px;border-radius:var(--radius-lg);
  overflow:hidden;text-align:left;
}
.step-num{
  position:absolute;top:14px;right:20px;font-size:56px;font-weight:800;
  color:rgba(255,255,255,0.06);line-height:1;font-family:"Inter","DIN Alternate",sans-serif;
  transition:var(--transition-base);
}
.step-card:hover .step-num{color:rgba(0,180,255,0.20)}
.step-icon{
  width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  font-size:22px;background:rgba(0,180,255,0.10);color:var(--brand-blue);
  border:1px solid rgba(0,180,255,0.2);margin-bottom:20px;
  transition:var(--transition-base);
}
.step-card:hover .step-icon{
  background:rgba(0,180,255,0.18);box-shadow:var(--glow-blue);
}
.step-card h3{font-size:19px;font-weight:600;color:var(--text-primary);margin-bottom:10px}
.step-card p{font-size:14px;color:var(--text-secondary);line-height:1.7}

/* ========== 奖励预览 ========== */
.rewards{background:linear-gradient(180deg,rgba(5,11,30,0) 0%,rgba(10,22,51,0.5) 100%)}
.reward-grid{display:flex;gap:24px;align-items:stretch}
.reward-main{
  position:relative;flex:0 0 66.6667%;display:flex;overflow:hidden;min-height:280px;
  border-radius:var(--radius-lg);
  background:linear-gradient(120deg,rgba(0,40,80,0.6) 0%,rgba(10,22,51,0.7) 60%,rgba(255,122,26,0.15) 100%);
  backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  border:1px solid var(--glass-border);
  transition:var(--transition-base);
}
.reward-main:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px);border-color:rgba(255,122,26,0.25)}
.reward-main-content{flex:1.2;padding:36px 32px;display:flex;flex-direction:column;justify-content:center;min-width:0}
.reward-main-content .badge{margin-bottom:14px;align-self:flex-start}
.reward-main-content h3{font-size:26px;font-weight:700;color:var(--text-primary);margin-bottom:12px}
.reward-main-content p{font-size:14px;color:var(--text-secondary);line-height:1.7;margin-bottom:22px;max-width:380px}
.reward-main-img{flex:1;position:relative;overflow:hidden;min-width:0}
.reward-main-img img{width:100%;height:100%;object-fit:cover;border-radius:0 14px 14px 0}
.reward-main-img::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,22,51,0.4),transparent)}
.reward-sub-wrap{flex:0 0 33.3333%;display:flex;flex-direction:column;gap:24px}
.reward-sub{
  flex:1;display:flex;align-items:center;gap:18px;padding:24px;
  border-radius:var(--radius-lg);overflow:hidden;position:relative;
}
.reward-sub>i{
  width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:19px;flex-shrink:0;
}
.reward-sub:nth-child(1)>i{background:rgba(255,198,61,0.12);color:var(--warning-gold);border:1px solid rgba(255,198,61,0.2)}
.reward-sub:nth-child(2)>i{background:rgba(0,180,255,0.12);color:var(--brand-blue);border:1px solid rgba(0,180,255,0.2)}
.reward-sub .sub-info{flex:1;min-width:0}
.reward-sub h4{font-size:16px;font-weight:600;color:var(--text-primary);margin-bottom:4px}
.reward-sub p{font-size:13px;color:var(--text-secondary);line-height:1.5}
.reward-sub .btn-link{flex-shrink:0}

/* ========== 任务进度 ========== */
.task-panel{display:flex;gap:24px;align-items:stretch}
.task-list{padding:28px;border-radius:var(--radius-lg);flex:1.1}
.task-item{
  display:flex;align-items:center;gap:14px;padding:14px 10px;
  border-bottom:1px solid rgba(255,255,255,0.06);
  transition:var(--transition-base);
}
.task-item:last-child{border-bottom:none}
.task-item:hover{background:rgba(255,255,255,0.02)}
.task-check{
  width:24px;height:24px;border-radius:50%;border:2px solid rgba(255,255,255,0.25);
  display:flex;align-items:center;justify-content:center;font-size:11px;color:transparent;
  flex-shrink:0;cursor:pointer;transition:var(--transition-base);
}
.task-item.done .task-check{
  background:var(--success-green);border-color:var(--success-green);color:#050B1E;
  box-shadow:0 0 12px rgba(0,229,138,0.3);
}
.task-name{font-size:15px;color:var(--text-primary);flex:1}
.task-item.done .task-name{color:var(--text-muted);text-decoration:line-through}
.task-points{font-size:14px;font-weight:600;color:var(--brand-orange);font-family:"Inter","DIN Alternate",sans-serif}
.progress-panel{flex:0.9;padding:32px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;border-radius:var(--radius-lg)}
.progress-ring-wrap{position:relative;width:150px;height:150px;margin-bottom:16px}
.progress-ring{transform:rotate(-90deg)}
.progress-ring circle{fill:none;stroke-width:8;stroke-linecap:round}
.progress-ring .ring-track{stroke:rgba(255,255,255,0.08)}
.progress-ring .ring-value{
  stroke:url(#ringGradient);transition:stroke-dashoffset 0.5s ease;
}
.progress-percent{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  font-size:36px;font-weight:800;color:var(--text-primary);
  font-family:"Inter","DIN Alternate",sans-serif;
}
.progress-percent small{font-size:16px;font-weight:400;color:var(--text-muted);margin-top:12px}
.progress-note{font-size:13px;color:var(--text-secondary)}

/* ========== 最新资讯 ========== */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:40px}
.news-head .section-tag{margin-bottom:8px}
.news-head h2{font-size:32px;font-weight:700;color:var(--text-primary);line-height:1.25}
.news-head .btn-link{font-size:15px}
.news-list{display:flex;flex-direction:column;gap:16px}
.news-card{
  display:flex;align-items:center;gap:20px;padding:18px 20px;border-radius:var(--radius-lg);
  background:var(--glass-bg);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  border:1px solid var(--glass-border);
  transition:var(--transition-base);text-decoration:none;
}
.news-card:hover{
  background:var(--glass-hover);border-color:rgba(255,255,255,0.16);
  box-shadow:var(--shadow-hover);transform:translateY(-3px);text-decoration:none;
}
.news-thumb{
  width:120px;height:90px;border-radius:10px;overflow:hidden;flex-shrink:0;
  background:rgba(255,255,255,0.04);
}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s cubic-bezier(0.4,0,0.2,1)}
.news-card:hover .news-thumb img{transform:scale(1.06)}
.news-info{flex:1;min-width:0}
.news-cat{display:inline-block;font-size:12px;color:var(--brand-blue);background:rgba(0,180,255,0.08);border:1px solid rgba(0,180,255,0.2);padding:2px 10px;border-radius:var(--radius-pill);margin-bottom:6px}
.news-title{display:block;font-size:18px;font-weight:600;color:var(--text-primary);line-height:1.5;margin-bottom:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.news-desc{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:14px;color:var(--text-secondary);line-height:1.6}
.news-meta{display:flex;gap:16px;margin-top:8px;font-size:12px;color:var(--text-muted)}
.news-meta i{margin-right:4px}
.news-go{flex-shrink:0;width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;background:rgba(0,180,255,0.08);color:var(--brand-blue);transition:var(--transition-base)}
.news-card:hover .news-go{background:rgba(0,180,255,0.18);transform:translateX(4px)}
.news-empty{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:64px 24px;border-radius:var(--radius-lg);text-align:center;
  background:var(--glass-bg);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  border:1px dashed rgba(255,255,255,0.12);
}
.news-empty i{font-size:42px;color:var(--text-muted);margin-bottom:16px}
.news-empty p{font-size:15px;color:var(--text-secondary)}

/* ========== 平台亮点 ========== */
.highlight-row{
  display:flex;align-items:center;gap:48px;margin-bottom:80px;
}
.highlight-row:last-child{margin-bottom:0}
.highlight-row.reverse{flex-direction:row-reverse}
.highlight-text{flex:1;min-width:0}
.highlight-text .badge{margin-bottom:16px}
.highlight-text h3{font-size:28px;font-weight:700;color:var(--text-primary);line-height:1.3;margin-bottom:16px}
.highlight-text p{font-size:15px;color:var(--text-secondary);line-height:1.8;margin-bottom:24px;max-width:520px}
.highlight-features{display:flex;flex-direction:column;gap:12px}
.highlight-feature{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-secondary)}
.highlight-feature i{color:var(--success-green);font-size:15px}
.highlight-img{
  flex:1;position:relative;border-radius:var(--radius-lg);overflow:hidden;
  min-height:320px;box-shadow:var(--shadow-card);
}
.highlight-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.6s cubic-bezier(0.4,0,0.2,1)}
.highlight-img:hover img{transform:scale(1.03)}
.highlight-img::after{
  content:"";position:absolute;inset:0;border-radius:var(--radius-lg);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,0.08);
}

/* ========== FAQ ========== */
.faq-list{max-width:820px;margin:0 auto;padding:8px 24px;border-radius:var(--radius-lg)}
.faq-item{border-bottom:1px solid rgba(255,255,255,0.06)}
.faq-item:last-child{border-bottom:none}
.faq-q{
  display:flex;align-items:center;gap:14px;width:100%;padding:18px 8px;text-align:left;
  font-size:15px;font-weight:500;color:var(--text-primary);cursor:pointer;
  transition:var(--transition-base);
}
.faq-q:hover{color:var(--brand-blue)}
.faq-q .faq-icon{
  width:24px;height:24px;border-radius:6px;background:rgba(0,180,255,0.10);
  display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--brand-blue);
  flex-shrink:0;transition:transform 0.3s ease;
}
.faq-item.active .faq-icon{transform:rotate(45deg)}
.faq-a{display:none;padding:0 8px 20px 46px;font-size:14px;color:var(--text-secondary);line-height:1.8}
.faq-item.active .faq-a{display:block}

/* ========== 最终 CTA ========== */
.cta-final{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,#0A1633 0%,#1A3A66 55%,#2B4F8C 100%);
  padding:72px 24px;text-align:center;border-radius:var(--radius-lg);
  background:linear-gradient(120deg,#0A1633 0%,#1A3A66 55%,#2B4F8C 100%),
             radial-gradient(circle at 80% 50%,rgba(255,122,26,0.25),transparent 50%);
}
.cta-inner{max-width:720px;margin:0 auto}
.cta-final h2{font-size:34px;font-weight:700;color:var(--text-primary);margin-bottom:14px}
.cta-final p{font-size:16px;color:var(--text-secondary);margin-bottom:32px}
.cta-final .btn-primary{box-shadow:0 0 40px rgba(255,122,26,0.45)}

/* ========== 页脚 ========== */
.site-footer{background:#030812;border-top:1px solid rgba(255,255,255,0.06);padding:64px 0 24px;margin-top:80px}
.footer-grid{display:flex;gap:48px;flex-wrap:wrap;margin-bottom:40px}
.footer-brand{flex:1.4;min-width:260px}
.footer-brand .brand-logo{margin-bottom:16px}
.footer-brand-desc{font-size:14px;color:var(--text-secondary);line-height:1.7;max-width:320px;margin-bottom:20px}
.footer-social{display:flex;gap:10px}
.footer-social a{
  width:36px;height:36px;border-radius:8px;background:rgba(255,255,255,0.05);
  border:1px solid rgba(255,255,255,0.10);display:flex;align-items:center;justify-content:center;
  font-size:14px;color:var(--text-secondary);transition:var(--transition-base);text-decoration:none;
}
.footer-social a:hover{color:var(--brand-blue);border-color:rgba(0,180,255,0.3);background:rgba(0,180,255,0.08);text-decoration:none}
.footer-col{flex:1;min-width:150px}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text-primary);margin-bottom:16px}
.footer-col a{display:block;font-size:14px;color:var(--text-secondary);padding:5px 0;transition:var(--transition-base);text-decoration:none}
.footer-col a:hover{color:var(--brand-blue);padding-left:4px;text-decoration:none}
.footer-disclaimer{font-size:12px;color:var(--text-muted);line-height:1.7;border-top:1px solid rgba(255,255,255,0.05);padding-top:24px;text-align:center}
.footer-copyright{font-size:13px;color:var(--text-muted);text-align:center;margin-top:16px}

/* ========== 动画 ========== */
@keyframes fadeInUp{
  from{opacity:0;transform:translateY(24px)}
  to{opacity:1;transform:translateY(0)}
}
.hero-inner>*{animation:fadeInUp 0.6s cubic-bezier(0.4,0,0.2,1) both}
.hero-inner>*:nth-child(1){animation-delay:0.1s}
.hero-inner>*:nth-child(2){animation-delay:0.2s}
.hero-inner>*:nth-child(3){animation-delay:0.3s}
.hero-inner>*:nth-child(4){animation-delay:0.4s}
.reveal{opacity:0;transform:translateY(24px);transition:opacity 0.6s ease,transform 0.6s ease}
.reveal.visible{opacity:1;transform:translateY(0)}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:0.01ms !important;transition-duration:0.01ms !important;scroll-behavior:auto !important}
}

/* ========== 响应式 ========== */
@media (max-width:1024px){
  .nav-center{gap:2px}
  .nav-center a{padding:8px 12px;font-size:14px}
  .nav-search{width:150px}
  .nav-search:focus-within{width:200px}
  .reward-main{flex:0 0 60%}
  .reward-sub-wrap{flex:0 0 40%}
  .highlight-row{gap:32px}
  .highlight-text h3{font-size:24px}
  .hero h1{font-size:44px}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .nav-center,.nav-search,.nav-login,.nav-cta{display:none}
  .nav-toggle{display:flex}
  .hero{min-height:auto;padding:120px 16px 64px;text-align:center}
  .hero h1{font-size:36px}
  .hero-sub p{font-size:15px;text-align:center}
  .hero-sub::before{left:50%;right:auto;top:auto;bottom:-12px;width:60px;height:3px;transform:translateX(-50%)}
  .hero-sub{margin-bottom:32px}
  .hero-actions{flex-direction:column;align-items:center}
  .hero-actions .btn-primary,.hero-actions .btn-ghost{width:100%;max-width:280px}
  .hero-focus-card{position:static;margin:24px auto 0;max-width:280px}
  .data-bar{margin-top:32px}
  .stat-card{margin-bottom:16px}
  .step-card{margin-bottom:16px}
  .reward-grid{flex-direction:column}
  .reward-main,.reward-sub-wrap{flex:0 0 auto}
  .reward-main{flex-direction:column-Reverse}
  .reward-main-img{min-height:180px}
  .reward-main-img img{border-radius:0 0 14px 14px}
  .reward-sub-wrap{gap:16px;flex-direction:row}
  .reward-sub{flex-direction:column;text-align:center;gap:12px}
  .reward-sub .btn-link{align-self:center}
  .task-panel{flex-direction:column}
  .progress-panel{padding:40px 24px}
  .news-head{flex-direction:column;align-items:flex-start;gap:12px}
  .news-card{flex-wrap:wrap}
  .news-thumb{width:72px;height:72px}
  .news-title{font-size:16px;white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
  .news-go{display:none}
  .highlight-row,.highlight-row.reverse{flex-direction:column;gap:24px;margin-bottom:56px}
  .highlight-img{min-height:220px;width:100%}
  .highlight-text h3{font-size:22px}
  .cta-final{padding:48px 16px}
  .cta-final h2{font-size:26px}
  .footer-grid{gap:32px}
  .footer-grid > div{flex:0 0 100%}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .section{padding:44px 0}
  .section-head h2{font-size:26px}
  .hero h1{font-size:30px}
  .nav-wrap{padding:0 16px}
  .news-card{padding:14px;gap:14px}
  .footer-social a{width:40px;height:40px}
  .reward-sub-wrap{flex-direction:column}
  .reward-sub{flex-direction:row;text-align:left;width:100%}
  .reward-sub .btn-link{align-self:flex-start}
}

/* roulang page: article */
:root {
    --bg-primary: #050B1E;
    --bg-secondary: #0A1633;
    --brand-primary: #00B4FF;
    --brand-secondary: #FF7A1A;
    --success: #00E58A;
    --warning: #FFC63D;
    --text-primary: #F0F6FF;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    --glass-bg: rgba(255,255,255,0.04);
    --glass-hover: rgba(255,255,255,0.08);
    --glass-border: rgba(255,255,255,0.10);
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --shadow-main: 0 10px 30px rgba(0,0,0,0.25);
    --shadow-hover: 0 16px 40px rgba(0,0,0,0.35);
    --glow-blue: 0 0 24px rgba(0,180,255,0.35);
    --glow-orange: 0 0 24px rgba(255,122,26,0.35);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
    background: linear-gradient(180deg, #050B1E 0%, #0A1633 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    font-size: 16px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    overflow-x: hidden;
}
img {
    max-width: 100%;
    display: block;
}
a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}
ul, ol {
    list-style: none;
}
button, input {
    font-family: inherit;
    outline: none;
    border: none;
    background: none;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
@media (max-width: 640px) {
    .container {
        padding: 0 16px;
    }
}
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--brand-primary), var(--brand-secondary));
    z-index: 1200;
    width: 0;
    transition: width 0.1s linear;
}
@supports not (backdrop-filter: blur(16px)) {
    .site-header, .article-header, .article-body, .pn-card, .related-card, .mobile-nav {
        background: rgba(10, 20, 40, 0.92);
    }
}
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 72px;
    z-index: 1000;
    background: rgba(5, 11, 30, 0.72);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--glass-border);
    transition: var(--transition);
}
.site-header.scrolled {
    background: rgba(5, 11, 30, 0.92);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}
.nav-wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}
.brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    text-decoration: none;
}
.brand-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, #00B4FF, #0077FF);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 17px;
    box-shadow: var(--glow-blue);
}
.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}
.brand-name {
    color: var(--text-primary);
    font-size: 17px;
    font-weight: 600;
    letter-spacing: 0.02em;
    white-space: nowrap;
}
.brand-sub {
    color: var(--brand-primary);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    white-space: nowrap;
}
.nav-center {
    display: flex;
    align-items: center;
    gap: 4px;
    margin: 0 auto;
}
.nav-center a {
    padding: 8px 16px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    border-radius: 8px;
    text-decoration: none;
    transition: var(--transition);
    position: relative;
}
.nav-center a:hover {
    color: var(--text-primary);
    background: rgba(255,255,255,0.06);
}
.nav-center a.active {
    color: var(--brand-primary);
    background: rgba(0,180,255,0.10);
}
.nav-center a.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 16px;
    right: 16px;
    height: 2px;
    background: var(--brand-primary);
    border-radius: 2px;
}
.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}
.nav-search {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 7px 12px;
    width: 180px;
    transition: all 0.3s ease;
    cursor: pointer;
}
.nav-search:focus-within {
    width: 260px;
    border-color: rgba(0,180,255,0.5);
    box-shadow: 0 0 16px rgba(0,180,255,0.20);
}
.nav-search i {
    color: var(--text-muted);
    font-size: 13px;
    flex-shrink: 0;
}
.nav-search input {
    width: 100%;
    color: var(--text-primary);
    font-size: 13px;
    background: transparent;
    border: none;
    outline: none;
}
.nav-search input::placeholder {
    color: var(--text-muted);
}
.search-kbd {
    background: rgba(255,255,255,0.10);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 11px;
    color: var(--text-secondary);
    white-space: nowrap;
    flex-shrink: 0;
}
.nav-login {
    color: var(--text-secondary);
    font-size: 14px;
    text-decoration: none;
    padding: 8px 4px;
    transition: var(--transition);
    white-space: nowrap;
}
.nav-login:hover {
    color: var(--brand-primary);
}
.nav-cta {
    display: inline-block;
    background: linear-gradient(135deg, #FF7A1A, #FF9D45);
    color: #0A0F1F;
    font-size: 14px;
    font-weight: 600;
    padding: 10px 20px;
    border-radius: 10px;
    text-decoration: none;
    box-shadow: var(--glow-orange);
    transition: var(--transition);
    white-space: nowrap;
    text-align: center;
}
.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 28px rgba(255,122,26,0.45);
    color: #0A0F1F;
}
.nav-cta:focus-visible {
    outline: 3px solid rgba(0,180,255,0.4);
    outline-offset: 2px;
}
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    padding: 8px;
    cursor: pointer;
    z-index: 1101;
}
.nav-toggle span {
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}
.nav-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.nav-toggle.open span:nth-child(2) {
    opacity: 0;
}
.nav-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}
.mobile-nav {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(8, 16, 38, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--glass-border);
    padding: 20px 24px 28px;
    flex-direction: column;
    gap: 12px;
    z-index: 999;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}
.mobile-nav.open {
    display: flex;
}
.mobile-nav a {
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 500;
    padding: 12px 4px;
    border-radius: 8px;
    transition: var(--transition);
    border-bottom: 1px solid rgba(255,255,255,0.04);
}
.mobile-nav a:hover {
    color: var(--brand-primary);
    background: rgba(0,180,255,0.05);
}
.mobile-nav a.active {
    color: var(--brand-primary);
    background: rgba(0,180,255,0.10);
}
.mobile-nav .mobile-search {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 10px 12px;
    margin-top: 8px;
}
.mobile-nav .mobile-search input {
    width: 100%;
    color: var(--text-primary);
    font-size: 14px;
    background: transparent;
}
.mobile-nav .mobile-search input::placeholder {
    color: var(--text-muted);
}
.mobile-nav .mobile-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #FF7A1A, #FF9D45);
    color: #0A0F1F;
    font-size: 15px;
    font-weight: 600;
    padding: 14px 24px;
    border-radius: 10px;
    text-decoration: none;
    box-shadow: var(--glow-orange);
    margin-top: 8px;
    border: none;
    cursor: pointer;
}
.article-main {
    padding-top: 72px;
    padding-bottom: 60px;
}
.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    padding: 36px 0 20px;
    font-size: 14px;
    color: var(--text-muted);
}
.breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}
.breadcrumb a:hover {
    color: var(--brand-primary);
}
.breadcrumb .sep {
    color: var(--text-muted);
    font-size: 12px;
}
.breadcrumb .current {
    color: var(--text-secondary);
    max-width: 360px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.article-header {
    position: relative;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 40px 40px 32px;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: var(--shadow-main);
    overflow: hidden;
    margin-bottom: 28px;
}
.article-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--brand-primary), var(--brand-secondary));
}
.article-header h1 {
    font-size: 34px;
    font-weight: 800;
    line-height: 1.3;
    color: var(--text-primary);
    margin-bottom: 18px;
    letter-spacing: 0.01em;
}
.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 14px;
    color: var(--text-secondary);
    font-size: 14px;
}
.meta-category {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(0,180,255,0.12);
    color: var(--brand-primary);
    border: 1px solid rgba(0,180,255,0.25);
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
}
.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.meta-item i {
    font-size: 13px;
    color: var(--text-muted);
}
.article-content-inner {
    max-width: 780px;
    margin: 0 auto;
}
.article-body {
    background: rgba(0, 0, 0, 0.20);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 44px 48px;
    color: var(--text-primary);
    font-size: 16px;
    line-height: 1.75;
    box-shadow: var(--shadow-main);
}
.article-body h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 40px 0 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    line-height: 1.3;
}
.article-body h2:first-child {
    margin-top: 0;
}
.article-body h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 28px 0 12px;
    line-height: 1.4;
}
.article-body p {
    margin-bottom: 16px;
    color: rgba(240, 246, 255, 0.88);
}
.article-body p:last-child {
    margin-bottom: 0;
}
.article-body a {
    color: var(--brand-primary);
    border-bottom: 1px solid rgba(0,180,255,0.3);
    transition: var(--transition);
}
.article-body a:hover {
    color: #4FCBFF;
    border-bottom-color: #4FCBFF;
}
.article-body blockquote {
    border-left: 4px solid var(--brand-primary);
    background: rgba(0,180,255,0.06);
    padding: 14px 20px;
    font-style: italic;
    color: var(--text-secondary);
    margin: 20px 0;
    border-radius: 0 10px 10px 0;
}
.article-body img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.3);
    margin: 24px 0;
}
.article-body figure {
    margin: 24px 0;
}
.article-body figcaption {
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
    padding-top: 8px;
}
.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 14px;
    border-radius: 8px;
    overflow: hidden;
}
.article-body table th {
    background: rgba(0,180,255,0.15);
    color: var(--text-primary);
    padding: 12px 14px;
    text-align: left;
    font-weight: 600;
}
.article-body table td {
    padding: 10px 14px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    color: rgba(240, 246, 255, 0.85);
}
.article-body table tr:nth-child(even) {
    background: rgba(255,255,255,0.02);
}
.article-body ul {
    margin: 16px 0;
    padding-left: 24px;
    list-style: disc;
}
.article-body ol {
    margin: 16px 0;
    padding-left: 24px;
    list-style: decimal;
}
.article-body li {
    margin-bottom: 8px;
    color: rgba(240, 246, 255, 0.85);
}
.article-empty {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 80px 40px;
    text-align: center;
    backdrop-filter: blur(16px);
}
.article-empty i {
    font-size: 48px;
    color: var(--text-muted);
    margin-bottom: 16px;
    display: block;
}
.article-empty p {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}
.article-empty .empty-sub {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 400;
    margin-bottom: 24px;
}
.article-empty .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 44px;
    padding: 10px 24px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
}
.article-empty .btn-primary {
    background: linear-gradient(135deg, #FF7A1A, #FF9D45);
    color: #0A0F1F;
    box-shadow: var(--glow-orange);
    margin-right: 8px;
}
.article-empty .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 28px rgba(255,122,26,0.45);
}
.article-empty .btn-ghost {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
}
.article-empty .btn-ghost:hover {
    background: var(--glass-hover);
    border-color: rgba(255,255,255,0.18);
}
.article-prev-next {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 40px;
}
.pn-card {
    display: flex;
    flex-direction: column;
    gap: 8px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 14px;
    padding: 22px 26px;
    text-decoration: none;
    backdrop-filter: blur(16px);
    transition: var(--transition);
    min-height: 100px;
}
.pn-card:hover {
    background: var(--glass-hover);
    border-color: rgba(255,255,255,0.16);
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}
.pn-card.pn-next {
    text-align: right;
}
.pn-label {
    font-size: 13px;
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.pn-card.pn-next .pn-label {
    justify-content: flex-end;
}
.pn-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.5;
}
.article-return {
    text-align: center;
    margin-top: 40px;
}
.return-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 44px;
    padding: 10px 28px;
    border-radius: 10px;
    background: rgba(0,180,255,0.10);
    border: 1px solid rgba(0,180,255,0.3);
    color: var(--brand-primary);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
}
.return-btn:hover {
    background: rgba(0,180,255,0.18);
    border-color: var(--brand-primary);
    box-shadow: 0 0 20px rgba(0,180,255,0.2);
    transform: translateY(-2px);
}
.related-posts {
    margin-top: 56px;
}
.section-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
}
.section-head h2 {
    font-size: 24px;
    font-weight: 700;
    position: relative;
    padding-left: 14px;
}
.section-head h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 4px;
    bottom: 4px;
    width: 4px;
    background: linear-gradient(180deg, var(--brand-primary), var(--brand-secondary));
    border-radius: 4px;
}
.section-head .view-all {
    color: var(--text-secondary);
    font-size: 14px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}
.section-head .view-all:hover {
    color: var(--brand-primary);
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.related-card {
    display: flex;
    flex-direction: column;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 14px;
    overflow: hidden;
    text-decoration: none;
    backdrop-filter: blur(16px);
    transition: var(--transition);
}
.related-card:hover {
    transform: translateY(-5px);
    background: var(--glass-hover);
    border-color: rgba(255,255,255,0.16);
    box-shadow: var(--shadow-hover);
}
.related-card:hover .related-thumb img {
    transform: scale(1.05);
}
.related-thumb {
    height: 160px;
    overflow: hidden;
    position: relative;
    background: #0A1633;
}
.related-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.related-card-body {
    padding: 18px 20px 20px;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.related-card-body h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.5;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.related-card-body p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.related-date {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: auto;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.site-footer {
    background: #030812;
    border-top: 1px solid var(--glass-border);
    padding: 60px 0 32px;
    margin-top: 60px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 40px;
    margin-bottom: 40px;
}
.footer-brand .brand-logo {
    margin-bottom: 16px;
}
.footer-brand-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 20px;
    max-width: 280px;
}
.footer-social {
    display: flex;
    gap: 10px;
}
.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 15px;
    text-decoration: none;
    transition: var(--transition);
}
.footer-social a:hover {
    background: rgba(0,180,255,0.10);
    border-color: rgba(0,180,255,0.4);
    color: var(--brand-primary);
    transform: translateY(-3px);
}
.footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: 0.02em;
}
.footer-col a {
    display: block;
    color: var(--text-muted);
    font-size: 14px;
    line-height: 2.2;
    text-decoration: none;
    transition: var(--transition);
}
.footer-col a:hover {
    color: var(--brand-primary);
    transform: translateX(4px);
}
.footer-disclaimer {
    border-top: 1px solid rgba(255,255,255,0.04);
    padding-top: 24px;
    margin-top: 32px;
    font-size: 13px;
    color: var(--text-muted);
    text-align: center;
    line-height: 1.7;
}
.footer-copyright {
    text-align: center;
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid rgba(255,255,255,0.03);
}
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .nav-search {
        display: none;
    }
    .article-header h1 {
        font-size: 30px;
    }
}
@media (max-width: 768px) {
    .nav-center {
        display: none;
    }
    .nav-login {
        display: none;
    }
    .nav-cta {
        display: none;
    }
    .nav-toggle {
        display: flex;
    }
    .nav-search {
        display: none;
    }
    .related-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .article-body {
        padding: 28px 20px;
    }
    .article-header {
        padding: 32px 24px 28px;
    }
    .article-header h1 {
        font-size: 26px;
    }
    .article-prev-next {
        grid-template-columns: 1fr;
        gap: 14px;
    }
    .pn-card.pn-next {
        text-align: left;
    }
    .pn-card.pn-next .pn-label {
        justify-content: flex-start;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .breadcrumb {
        padding-top: 28px;
    }
    .article-content-inner {
        max-width: 100%;
    }
    .article-body table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }
}
@media (max-width: 520px) {
    .nav-search {
        display: none;
    }
    .nav-wrap {
        padding: 0 16px;
    }
    .brand-name {
        font-size: 16px;
    }
    .article-body {
        padding: 24px 16px;
        font-size: 15px;
    }
    .article-body h2 {
        font-size: 20px;
    }
    .article-meta {
        gap: 10px;
        font-size: 13px;
    }
    .article-header {
        padding: 28px 20px 24px;
    }
    .article-header h1 {
        font-size: 22px;
    }
    .related-thumb {
        height: 130px;
    }
}

/* roulang page: category1 */
:root {
            --bg-deep: #050B1E;
            --bg-mid: #0A1633;
            --primary: #00B4FF;
            --primary-glow: rgba(0, 180, 255, 0.35);
            --accent: #FF7A1A;
            --accent-glow: rgba(255, 122, 26, 0.35);
            --success: #00E58A;
            --warning: #FFC63D;
            --text-main: #F0F6FF;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --glass-bg: rgba(255, 255, 255, 0.04);
            --glass-bg-hover: rgba(255, 255, 255, 0.08);
            --glass-border: rgba(255, 255, 255, 0.10);
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.35);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container: 1200px;
        }

        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-mid) 100%);
            color: var(--text-main);
            font-size: 16px;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; display: block; }
        button, input { font-family: inherit; }
        .container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
        main { padding-top: 72px; }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 180, 255, 0.4);
        }

        @supports not (backdrop-filter: blur(1px)) {
            .site-header,
            .mobile-menu,
            .guide-card,
            .step-card,
            .faq-wrap,
            .cta-bar,
            .scenario-item {
                background: rgba(10, 20, 40, 0.85);
            }
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 72px;
            background: rgba(5, 11, 30, 0.6);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background 0.3s ease, border-color 0.3s ease;
        }
        .site-header.scrolled {
            background: rgba(5, 11, 30, 0.88);
            border-bottom-color: rgba(255, 255, 255, 0.09);
        }
        .nav-wrap {
            max-width: var(--container);
            height: 72px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--text-main);
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), #0E4C8F);
            color: #fff;
            font-size: 17px;
            box-shadow: 0 0 18px rgba(0, 180, 255, 0.28);
        }
        .brand-text { display: flex; flex-direction: column; line-height: 1.15; }
        .brand-name { font-size: 18px; font-weight: 600; letter-spacing: 0.02em; }
        .brand-sub { font-size: 12px; font-weight: 700; color: var(--primary); letter-spacing: 0.04em; }
        .nav-center { display: flex; align-items: center; gap: 8px; margin: 0 auto; }
        .nav-center a {
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .nav-center a:hover { color: var(--text-main); background: rgba(255, 255, 255, 0.06); }
        .nav-center a.active {
            color: var(--primary);
            background: rgba(0, 180, 255, 0.08);
            box-shadow: inset 0 -2px 0 var(--primary);
        }
        .nav-right { display: flex; align-items: center; gap: 10px; }
        .nav-search {
            position: relative;
            display: flex;
            align-items: center;
            width: 180px;
            height: 38px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 8px;
            padding: 0 10px;
            transition: width 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
        }
        .nav-search:focus-within {
            width: 260px;
            border-color: rgba(0, 180, 255, 0.5);
            box-shadow: 0 0 0 3px rgba(0, 180, 255, 0.25);
        }
        .nav-search i { color: var(--text-muted); font-size: 13px; margin-right: 8px; }
        .nav-search input {
            flex: 1;
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-main);
            font-size: 13px;
            width: 100%;
            min-width: 0;
        }
        .nav-search input::placeholder { color: var(--text-muted); }
        .search-kbd {
            font-size: 11px;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.08);
            padding: 2px 6px;
            border-radius: 4px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            white-space: nowrap;
        }
        .nav-login { color: var(--text-secondary); font-size: 14px; font-weight: 500; padding: 8px 6px; }
        .nav-login:hover { color: var(--primary); }
        .nav-cta {
            height: 40px;
            padding: 0 20px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--accent), #FF9D45);
            color: #0A0F1F;
            font-size: 14px;
            font-weight: 700;
            border-radius: 10px;
            box-shadow: 0 0 20px var(--accent-glow);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 0 28px rgba(255, 122, 26, 0.45); color: #0A0F1F; }
        .nav-cta:active { transform: translateY(0); box-shadow: 0 0 18px rgba(255, 122, 26, 0.35); }
        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--glass-border);
            border-radius: 10px;
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-toggle:hover { background: rgba(255, 255, 255, 0.08); }
        .nav-toggle span { display: block; width: 20px; height: 2px; background: var(--text-main); border-radius: 2px; transition: var(--transition); }
        body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
        body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
        body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

        .mobile-menu { display: none; }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 28px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            min-height: 44px;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent), #FF9D45);
            color: #0A0F1F;
            box-shadow: 0 0 24px var(--accent-glow);
        }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 32px rgba(255, 122, 26, 0.45); color: #0A0F1F; }
        .btn-primary:active { transform: translateY(0); box-shadow: 0 0 18px rgba(255, 122, 26, 0.35); }
        .btn-ghost {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-main);
        }
        .btn-ghost:hover { background: rgba(255, 255, 255, 0.10); color: var(--text-main); transform: translateY(-2px); }
        .btn-ghost:active { transform: translateY(0); }

        .page-hero {
            padding: 120px 0 64px;
            background: linear-gradient(180deg, rgba(10, 22, 51, 0.94), rgba(5, 11, 30, 0.86)), url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .hero-inner { max-width: 860px; }
        .page-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(0, 180, 255, 0.10);
            border: 1px solid rgba(0, 180, 255, 0.25);
            border-radius: 999px;
            padding: 6px 16px;
            margin-bottom: 20px;
            animation: fadeInUp 0.6s ease both;
        }
        .page-tag::before {
            content: '';
            width: 6px;
            height: 6px;
            background: var(--success);
            border-radius: 50%;
            box-shadow: 0 0 8px var(--success);
        }
        .page-hero h1 {
            font-size: 48px;
            line-height: 1.2;
            font-weight: 800;
            margin: 0 0 14px;
            letter-spacing: 0.01em;
            animation: fadeInUp 0.6s ease 0.1s both;
        }
        .page-hero p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            margin: 0 0 28px;
            animation: fadeInUp 0.6s ease 0.2s both;
        }
        .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; animation: fadeInUp 0.6s ease 0.3s both; }

        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: none; }
        }

        .category-tabs { padding: 48px 0 0; }
        .tabs-wrap { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; justify-content: center; }
        .tab-pill {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 44px;
            padding: 0 22px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.10);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
            min-height: 44px;
        }
        .tab-pill:hover {
            background: rgba(0, 180, 255, 0.08);
            color: var(--primary);
            border-color: rgba(0, 180, 255, 0.30);
        }
        .tab-pill.active {
            background: linear-gradient(135deg, rgba(0, 180, 255, 0.18), rgba(0, 180, 255, 0.06));
            border-color: rgba(0, 180, 255, 0.45);
            color: var(--primary);
            box-shadow: 0 0 18px rgba(0, 180, 255, 0.18);
        }

        .guide-grid { padding: 64px 0 80px; }
        .section-head { text-align: center; max-width: 760px; margin: 0 auto 48px; }
        .section-eyebrow {
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .section-head h2 { font-size: 32px; font-weight: 700; line-height: 1.25; margin: 0 0 12px; }
        .section-head p { color: var(--text-secondary); font-size: 15px; margin: 0; }

        .guide-row { display: flex; flex-wrap: wrap; }
        .guide-card-wrap { display: flex; margin-bottom: 24px; }
        .guide-card {
            width: 100%;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            position: relative;
            transition: var(--transition);
            backdrop-filter: blur(16px);
        }
        .guide-card:hover {
            transform: translateY(-6px);
            background: var(--glass-bg-hover);
            border-color: rgba(255, 255, 255, 0.16);
            box-shadow: var(--shadow-lg);
        }
        .guide-card-cover { position: relative; height: 200px; overflow: hidden; }
        .guide-card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
        .guide-card:hover .guide-card-cover img { transform: scale(1.05); }
        .guide-card-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(5, 11, 30, 0) 40%, rgba(5, 11, 30, 0.6) 100%);
        }
        .guide-card-label {
            position: absolute;
            left: 14px;
            top: 14px;
            z-index: 2;
            display: inline-flex;
            align-items: center;
            height: 28px;
            padding: 0 12px;
            border-radius: 999px;
            background: rgba(5, 11, 30, 0.55);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.18);
            font-size: 12px;
            font-weight: 600;
            color: #fff;
        }
        .guide-card-body {
            padding: 22px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
            border-left: 3px solid rgba(0, 180, 255, 0.6);
        }
        .guide-card-wrap:nth-child(even) .guide-card-body { border-left-color: var(--accent); }
        .guide-card-body h3 { font-size: 19px; font-weight: 700; margin: 0 0 10px; color: var(--text-main); }
        .guide-card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0 0 16px;
            line-height: 1.7;
            flex: 1;
        }
        .card-link { display: inline-flex; align-items: center; gap: 6px; color: var(--primary); font-size: 14px; font-weight: 600; }
        .card-link i { transition: transform 0.3s ease; }
        .card-link:hover i { transform: translateX(4px); }

        .steps-section {
            padding: 80px 0;
            background: linear-gradient(180deg, rgba(10, 22, 51, 0.55), rgba(5, 11, 30, 0.92)), url('/assets/images/backpic/back-3.webp') center / cover;
        }
        .steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .step-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius);
            padding: 28px 24px;
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(16px);
            transition: var(--transition);
        }
        .step-card:hover { background: var(--glass-bg-hover); transform: translateY(-4px); box-shadow: var(--shadow); }
        .step-num {
            font-size: 52px;
            font-weight: 800;
            line-height: 1;
            color: rgba(0, 180, 255, 0.18);
            font-family: 'DIN Alternate', 'Inter', sans-serif;
            margin-bottom: 16px;
            transition: color 0.3s ease;
        }
        .step-card:hover .step-num { color: rgba(0, 180, 255, 0.35); }
        .step-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 180, 255, 0.10);
            border: 1px solid rgba(0, 180, 255, 0.22);
            color: var(--primary);
            font-size: 20px;
            margin-bottom: 18px;
            transition: var(--transition);
        }
        .step-card:hover .step-icon { box-shadow: 0 0 18px rgba(0, 180, 255, 0.25); }
        .step-card h3 { font-size: 18px; font-weight: 700; margin: 0 0 8px; }
        .step-card p { font-size: 14px; color: var(--text-secondary); margin: 0; line-height: 1.7; }

        .feature-section { padding: 80px 0; }
        .feature-block { display: flex; align-items: center; gap: 48px; margin-bottom: 64px; }
        .feature-block:last-child { margin-bottom: 0; }
        .feature-block.reverse .feature-media { order: 2; }
        .feature-block.reverse .feature-content { order: 1; }
        .feature-media {
            flex: 1;
            border-radius: var(--radius);
            overflow: hidden;
            position: relative;
            box-shadow: var(--shadow);
            border: 1px solid var(--glass-border);
        }
        .feature-media img { width: 100%; height: 340px; object-fit: cover; transition: transform 0.4s ease; }
        .feature-media:hover img { transform: scale(1.02); }
        .feature-content { flex: 1; padding-left: 30px; }
        .feature-block.reverse .feature-content { padding-left: 0; padding-right: 30px; }
        .feature-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(0, 180, 255, 0.08);
            border: 1px solid rgba(0, 180, 255, 0.20);
            border-radius: 999px;
            padding: 4px 14px;
            margin-bottom: 14px;
        }
        .feature-content h3 { font-size: 28px; font-weight: 700; margin: 0 0 14px; line-height: 1.3; }
        .feature-content p { color: var(--text-secondary); font-size: 15px; margin: 0 0 18px; }
        .feature-list { margin: 0; padding: 0; list-style: none; }
        .feature-list li { display: flex; gap: 10px; align-items: flex-start; padding: 8px 0; font-size: 15px; color: var(--text-secondary); }
        .feature-list li i { color: var(--success); margin-top: 5px; }

        .scenario-section { padding: 80px 0; }
        .scenario-list { max-width: 900px; margin: 0 auto; }
        .scenario-item {
            display: flex;
            align-items: center;
            gap: 24px;
            padding: 28px 32px;
            margin-bottom: 16px;
            background: var(--glass-bg);
            border-radius: var(--radius);
            border: 1px solid var(--glass-border);
            transition: var(--transition);
            backdrop-filter: blur(16px);
        }
        .scenario-item:hover { background: var(--glass-bg-hover); transform: translateX(6px); box-shadow: var(--shadow); }
        .scenario-num {
            font-family: 'DIN Alternate', 'Inter', sans-serif;
            font-size: 30px;
            font-weight: 800;
            color: rgba(0, 180, 255, 0.35);
            min-width: 44px;
        }
        .scenario-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 122, 26, 0.10);
            border: 1px solid rgba(255, 122, 26, 0.22);
            color: var(--accent);
            font-size: 18px;
            flex-shrink: 0;
        }
        .scenario-item h3 { font-size: 18px; font-weight: 700; margin: 0 0 4px; }
        .scenario-item p { font-size: 14px; color: var(--text-secondary); margin: 0; }

        .faq-section { padding: 80px 0; }
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius);
            overflow: hidden;
            backdrop-filter: blur(16px);
        }
        .faq-item { border-bottom: 1px solid rgba(255, 255, 255, 0.06); }
        .faq-item:last-child { border-bottom: none; }
        .faq-header {
            width: 100%;
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 0 24px;
            min-height: 56px;
            background: transparent;
            border: none;
            color: var(--text-main);
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            text-align: left;
            transition: background 0.3s ease;
        }
        .faq-header:hover { background: rgba(255, 255, 255, 0.03); }
        .faq-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: rgba(0, 180, 255, 0.12);
            border: 1px solid rgba(0, 180, 255, 0.3);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: transform 0.3s ease;
        }
        .faq-item.active .faq-icon { transform: rotate(45deg); background: rgba(0, 180, 255, 0.22); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer { max-height: 600px; padding: 0 24px 20px; }
        .faq-answer p { margin: 0; }

        .cta-bar-section { padding: 0 0 80px; }
        .cta-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            padding: 36px 40px;
            border-radius: 18px;
            background: linear-gradient(120deg, rgba(0, 180, 255, 0.10), rgba(255, 122, 26, 0.08)), rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(16px);
        }
        .cta-bar h3 { font-size: 24px; font-weight: 700; margin: 0 0 6px; }
        .cta-bar p { margin: 0; color: var(--text-secondary); font-size: 14px; }

        .site-footer {
            background: #030812;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 64px 0 0;
        }
        .footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.3fr; gap: 40px; padding-bottom: 36px; }
        .footer-brand .brand-logo { margin-bottom: 14px; }
        .footer-brand-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 14px 0 18px;
            max-width: 280px;
        }
        .footer-social { display: flex; gap: 10px; }
        .footer-social a {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--text-secondary);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-social a:hover { color: var(--primary); border-color: rgba(0, 180, 255, 0.3); transform: translateY(-2px); }
        .footer-col h4 { font-size: 16px; font-weight: 700; color: var(--text-main); margin: 0 0 16px; }
        .footer-col a { display: block; color: var(--text-secondary); font-size: 14px; padding: 5px 0; transition: color 0.3s ease; }
        .footer-col a:hover { color: var(--primary); }
        .footer-disclaimer {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 18px 0;
            text-align: center;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 18px 0;
            text-align: center;
            font-size: 13px;
            color: var(--text-muted);
        }

        .reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
        .reveal.show { opacity: 1; transform: none; }

        @media (max-width: 1024px) {
            .nav-center,
            .nav-right .nav-search,
            .nav-right .nav-login,
            .nav-right .nav-cta { display: none; }
            .nav-toggle { display: flex; }
            .mobile-menu {
                display: flex;
                position: fixed;
                top: 72px;
                left: 16px;
                right: 16px;
                flex-direction: column;
                gap: 4px;
                background: rgba(10, 22, 51, 0.97);
                backdrop-filter: blur(16px);
                border: 1px solid var(--glass-border);
                border-radius: 16px;
                padding: 16px;
                opacity: 0;
                transform: translateY(-10px);
                pointer-events: none;
                transition: var(--transition);
                z-index: 999;
                box-shadow: var(--shadow-lg);
            }
            body.nav-open .mobile-menu { opacity: 1; transform: translateY(0); pointer-events: auto; }
            .mobile-menu a {
                color: var(--text-secondary);
                font-size: 15px;
                font-weight: 500;
                padding: 12px 14px;
                border-radius: 10px;
                border-left: 2px solid transparent;
            }
            .mobile-menu a:hover,
            .mobile-menu a.active { color: var(--primary); background: rgba(0, 180, 255, 0.08); border-left-color: var(--primary); }
            .mobile-menu .nav-cta { margin-top: 12px; justify-content: center; }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .page-hero h1 { font-size: 40px; }
            .feature-block { flex-direction: column; gap: 24px; }
            .feature-media { width: 100%; }
            .feature-media img { height: 280px; }
            .feature-content { padding-left: 0; }
            .feature-block.reverse .feature-media { order: 1; }
            .feature-block.reverse .feature-content { order: 2; padding-right: 0; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            .container { padding: 0 16px; }
            .page-hero { padding: 100px 0 48px; }
            .page-hero h1 { font-size: 34px; }
            .hero-actions .btn { flex: 1; }
            .section-head h2 { font-size: 26px; }
            .guide-card-cover { height: 180px; }
            .cta-bar { flex-direction: column; align-items: flex-start; padding: 28px 24px; }
            .cta-bar .btn { width: 100%; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .scenario-item { padding: 22px 20px; gap: 16px; }
        }

        @media (max-width: 640px) {
            body { font-size: 15px; }
            .brand-name { font-size: 16px; }
            .brand-sub { font-size: 11px; }
            .page-hero h1 { font-size: 30px; }
            .page-hero p { font-size: 15px; }
            .guide-grid { padding: 48px 0 56px; }
            .steps-grid { grid-template-columns: 1fr; }
            .steps-section, .feature-section, .scenario-section, .faq-section { padding: 56px 0; }
            .scenario-item { flex-wrap: wrap; }
            .scenario-num { min-width: 34px; }
            .feature-media img { height: 220px; }
            .btn { width: auto; }
            .hero-actions { flex-direction: column; }
            .hero-actions .btn { width: 100%; }
            .footer-copyright { font-size: 12px; }
            .footer-disclaimer { font-size: 12px; }
            .footer-col a { font-size: 14px; }
        }

        @media (prefers-reduced-motion: reduce) {
            * { animation: none !important; transition: none !important; }
            .reveal { opacity: 1; transform: none; }
            html { scroll-behavior: auto; }
        }