/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --brand:#5B21B6;
  --brand-d:#4C1D95;
  --brand-l:#F1ECFE;
  --lime:#A3E635;
  --lime-d:#65A30D;
  --amber:#F59E0B;
  --ink:#171A2B;
  --ink-2:#5A5F76;
  --ink-3:#8B90A6;
  --bg:#FFFFFF;
  --bg-2:#F4F4F8;
  --bg-3:#EEF0FF;
  --dark:#0E0F1A;
  --line:#E6E7F2;
  --line-2:#E3E4EF;
  --r-sm:10px;
  --r:12px;
  --r-lg:16px;
  --sh:0 2px 6px rgba(23,26,43,.05);
  --sh-h:0 10px 24px rgba(91,33,182,.14);
  --wrap:1180px;
  --sidebar:252px;
  --t:180ms ease;
}
/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.86;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color var(--t)}
img{display:block;max-width:100%;height:auto;border:0}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
table{border-collapse:collapse}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 16px;z-index:200}
.skip-link:focus{left:12px;top:12px}
/* ============ 布局容器 ============ */
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 28px}
.app-main{margin-left:var(--sidebar);min-height:100vh;display:flex;flex-direction:column;background:var(--bg)}
main{flex:1 0 auto}
/* ============ 左侧 App Shell 侧边栏 ============ */
.app-sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar);
  background:var(--dark);color:#fff;z-index:80;
  display:flex;flex-direction:column;
  padding:24px 16px 20px;
  border-right:1px solid rgba(255,255,255,.07);
}
.sidebar-brand{padding:0 8px 22px}
.sidebar-brand a{display:flex;align-items:center;gap:11px;color:#fff}
.brand-mark{
  flex:0 0 auto;width:38px;height:38px;border-radius:11px;
  background:linear-gradient(135deg,#5B21B6,#7C3AED 70%,#A3E635 160%);
  display:grid;place-items:center;font-size:17px;font-weight:800;color:#fff;
}
.brand-text{font-size:18.5px;font-weight:800;letter-spacing:-.01em;line-height:1.2}
.brand-sub{display:block;font-size:12px;color:rgba(255,255,255,.42);font-weight:400;letter-spacing:.02em;margin-top:3px}
.sidebar-nav{display:flex;flex-direction:column;gap:4px;margin-top:6px}
.nav-label{font-size:11.5px;letter-spacing:.16em;color:rgba(255,255,255,.34);padding:14px 14px 8px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  padding:11px 14px;border-radius:var(--r-sm);
  font-size:15px;color:rgba(255,255,255,.72);
  transition:background var(--t),color var(--t);
}
.nav-item .dot{width:6px;height:6px;border-radius:50%;background:rgba(255,255,255,.28);flex:0 0 auto;transition:background var(--t)}
.nav-item:hover{background:rgba(91,33,182,.38);color:#fff}
.nav-item:hover .dot{background:var(--lime)}
.nav-item.active{background:var(--brand);color:#fff;font-weight:600}
.nav-item.active .dot{background:var(--lime)}
.nav-item.active::before{content:"";position:absolute;left:-16px;top:50%;transform:translateY(-50%);width:3px;height:22px;background:var(--lime);border-radius:2px}
.sidebar-foot{margin-top:auto;padding:16px 14px 0;border-top:1px solid rgba(255,255,255,.09)}
.sidebar-foot p{font-size:12.5px;color:rgba(255,255,255,.42);line-height:1.7}
.sidebar-foot strong{color:var(--lime);font-weight:600}
/* ============ 移动端顶栏 + 抽屉 ============ */
.mobile-bar{
  display:none;position:sticky;top:0;z-index:90;
  height:60px;align-items:center;gap:12px;padding:0 16px;
  background:rgba(14,15,26,.98);color:#fff;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.burger{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;background:rgba(255,255,255,.08)}
.burger span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.mobile-bar .brand-text{font-size:17px;color:#fff}
.drawer-mask{display:none;position:fixed;inset:0;background:rgba(14,15,26,.55);z-index:70}
.drawer-mask.on{display:block}
.sidebar-close{display:none}
/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-sm);font-size:15px;font-weight:600;
  transition:background var(--t),color var(--t),box-shadow var(--t),transform var(--t),border-color var(--t);
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 4px 14px rgba(91,33,182,.24)}
.btn-primary:hover{background:var(--brand-d);transform:translateY(-2px);box-shadow:0 10px 22px rgba(91,33,182,.3)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{border:1.5px solid var(--brand);color:var(--brand);background:transparent}
.btn-outline:hover{background:var(--brand-l);transform:translateY(-2px)}
.btn-ghost{border:1.5px solid rgba(255,255,255,.34);color:#fff;background:rgba(255,255,255,.06)}
.btn-ghost:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.6);transform:translateY(-2px)}
.btn-lime{background:var(--lime);color:#1A2410;font-weight:700}
.btn-lime:hover{background:#BEF264;transform:translateY(-2px);box-shadow:0 10px 22px rgba(163,230,53,.3)}
.btn-sm{padding:9px 16px;font-size:14px}
/* ============ 标签 / 徽章 ============ */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:var(--bg-3);color:var(--brand);
}
.tag-lime{background:rgba(163,230,53,.18);color:var(--lime-d)}
.tag-amber{background:rgba(245,158,11,.14);color:#B45309}
.tag-dark{background:rgba(255,255,255,.12);color:#fff}
.tag-line{background:transparent;border:1px solid var(--line);color:var(--ink-2);font-weight:500}
.badge-hot{
  position:absolute;top:12px;left:12px;z-index:2;
  background:var(--amber);color:#3A2400;font-size:12px;font-weight:700;
  padding:3px 9px;border-radius:8px;
}
/* ============ 板块通用 ============ */
.section{padding:80px 0;border-top:1px solid var(--line-2)}
.section--tint{background:var(--bg-2)}
.section--lilac{background:var(--bg-3)}
.section--dark{background:var(--dark);color:#fff;border-top:0}
.section-head{max-width:760px;margin-bottom:38px}
.section-head h2{
  font-size:clamp(24px,2.6vw,31px);font-weight:800;letter-spacing:-.01em;
  line-height:1.4;position:relative;padding-left:16px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.32em;bottom:.28em;width:5px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--lime));
}
.section-head p{margin-top:14px;color:var(--ink-2);font-size:16px;line-height:1.9}
.section--dark .section-head p{color:rgba(255,255,255,.66)}
.section--dark .section-head h2{color:#fff}
.section-head--center{max-width:720px;margin-left:auto;margin-right:auto;text-align:center}
.section-head--center h2{padding-left:0}
.section-head--center h2::before{display:none}
/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;background:var(--dark);color:#fff}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.jpg');
  background-size:cover;background-position:center;
  opacity:.34;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(14,15,26,.95) 0%,rgba(30,16,64,.86) 48%,rgba(91,33,182,.42) 100%);
}
.hero-inner{position:relative;z-index:2;padding:78px 0 84px}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:52px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;
  background:rgba(163,230,53,.14);color:var(--lime);border:1px solid rgba(163,230,53,.32);
}
.hero h1{
  margin-top:20px;
  font-size:clamp(29px,4vw,45px);
  line-height:1.24;font-weight:800;letter-spacing:-.015em;
}
.hero-lead{margin-top:20px;font-size:16.5px;line-height:1.92;color:rgba(255,255,255,.76);max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:28px}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.68)}
.hero-points li::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--lime);flex:0 0 auto}
/* Hero 右侧预告卡 */
.hero-preview{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-lg);overflow:hidden;backdrop-filter:blur(2px);
}
.hero-preview img{width:100%;aspect-ratio:16/9;object-fit:cover}
.preview-body{padding:20px 22px 24px}
.preview-title{font-size:19px;font-weight:700;margin-top:12px;line-height:1.5}
.preview-desc{font-size:14px;color:rgba(255,255,255,.62);margin-top:8px;line-height:1.8}
.countdown{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:18px}
.cd-cell{
  background:rgba(14,15,26,.6);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-sm);padding:10px 6px;text-align:center;
}
.cd-cell b{display:block;font-size:22px;font-weight:800;color:var(--lime);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.cd-cell span{display:block;font-size:12px;color:rgba(255,255,255,.52);margin-top:2px}
.remind-form{margin-top:18px;display:flex;gap:10px}
.remind-form input{
  flex:1 1 auto;min-width:0;height:46px;padding:0 14px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.08);color:#fff;font-size:14.5px;
  transition:border-color var(--t),box-shadow var(--t);
}
.remind-form input::placeholder{color:rgba(255,255,255,.42)}
.remind-form input:focus{outline:none;border-color:var(--lime);box-shadow:0 0 0 3px rgba(163,230,53,.2)}
.remind-form .btn{height:46px;padding:0 18px;font-size:14.5px}
.form-msg{margin-top:9px;font-size:13px;color:var(--amber);min-height:19px;line-height:1.6}
.form-msg.ok{color:var(--lime)}
/* ============ 卡片 ============ */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--sh);padding:24px;
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);
  height:100%;
}
.card:hover{box-shadow:var(--sh-h);transform:translateY(-3px);border-color:#DCD7F5}
.card-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:var(--brand-l);color:var(--brand);font-size:19px;font-weight:800;margin-bottom:16px;
}
.card h3{font-size:17.5px;font-weight:700;line-height:1.55}
.card p{margin-top:9px;color:var(--ink-2);font-size:14.8px;line-height:1.85}
/* ============ Tabs ============ */
.tab-nav{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.tab-btn{
  padding:10px 20px;border-radius:999px;font-size:14.5px;font-weight:600;
  border:1px solid var(--line);background:#fff;color:var(--ink-2);
  transition:all var(--t);
}
.tab-btn:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-l)}
.tab-btn.active{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(91,33,182,.22)}
.tab-panel{display:none}
.tab-panel.active{display:block;animation:fadeUp .32s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
/* ============ 功能矩阵对比条 ============ */
.matrix{display:flex;flex-direction:column;gap:14px}
.matrix-row{
  display:grid;grid-template-columns:190px 1fr 62px;gap:22px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:18px 22px;transition:box-shadow var(--t),transform var(--t);
}
.matrix-row:hover{box-shadow:var(--sh-h);transform:translateX(3px)}
.matrix-name{font-size:15px;font-weight:700}
.matrix-desc{font-size:14.2px;color:var(--ink-2);line-height:1.75}
.matrix-val{font-size:15px;font-weight:700;color:var(--brand);text-align:right;font-variant-numeric:tabular-nums}
.bar{margin-top:8px;height:6px;border-radius:4px;background:var(--bg-3);overflow:hidden}
.bar i{display:block;height:100%;border-radius:4px;background:linear-gradient(90deg,var(--brand),var(--lime))}
/* ============ 内容卡片（封面） ============ */
.media-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  overflow:hidden;height:100%;box-shadow:var(--sh);
  transition:box-shadow var(--t),transform var(--t);
  display:flex;flex-direction:column;
}
.media-card:hover{box-shadow:var(--sh-h);transform:translateY(-3px)}
.media-thumb{position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--bg-2)}
.media-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .32s ease}
.media-card:hover .media-thumb img{transform:scale(1.03)}
.media-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1 1 auto}
.media-body h3{font-size:16.5px;font-weight:700;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.media-body p{margin-top:9px;font-size:14.2px;color:var(--ink-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.media-meta{
  margin-top:auto;padding-top:14px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums;
}
.media-meta .sep{width:3px;height:3px;border-radius:50%;background:var(--line-2)}
/* ============ 横向滚动画廊 ============ */
.rail{
  display:flex;gap:20px;overflow-x:auto;padding:6px 4px 22px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.rail::-webkit-scrollbar{height:8px}
.rail::-webkit-scrollbar-track{background:var(--bg-3);border-radius:8px}
.rail::-webkit-scrollbar-thumb{background:#C9C6E4;border-radius:8px}
.rail-item{flex:0 0 268px;scroll-snap-align:start}
/* ============ 入口矩阵 ============ */
.entry-card{
  display:flex;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r);padding:20px 22px;box-shadow:var(--sh);
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);height:100%;
}
.entry-card:hover{box-shadow:var(--sh-h);transform:translateY(-3px);border-color:#DCD7F5}
.entry-icon{
  flex:0 0 auto;width:46px;height:46px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand),#7C3AED);color:#fff;font-weight:800;font-size:16px;
}
.entry-card h3{font-size:16.5px;font-weight:700}
.entry-card span{display:block;font-size:13.5px;color:var(--ink-2);margin-top:5px;line-height:1.7}
/* ============ 演示区 ============ */
.demo-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.demo-shot{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:0 18px 40px rgba(23,26,43,.12);background:#fff;
}
.demo-shot img{width:100%;aspect-ratio:16/10;object-fit:cover}
.demo-list{display:flex;flex-direction:column;gap:18px;margin-top:24px}
.demo-item{display:flex;gap:14px}
.demo-num{
  flex:0 0 auto;width:30px;height:30px;border-radius:9px;background:var(--brand-l);color:var(--brand);
  display:grid;place-items:center;font-size:13.5px;font-weight:800;font-variant-numeric:tabular-nums;
}
.demo-item h3{font-size:16px;font-weight:700}
.demo-item p{font-size:14.4px;color:var(--ink-2);margin-top:5px;line-height:1.8}
/* ============ 案例卡 ============ */
.story{
  display:grid;grid-template-columns:200px 1fr;gap:0;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh);
  transition:box-shadow var(--t),transform var(--t);height:100%;
}
.story:hover{box-shadow:var(--sh-h);transform:translateY(-3px)}
.story img{width:100%;height:100%;object-fit:cover;min-height:180px}
.story-body{padding:24px 24px 22px}
.story-body h3{font-size:17.5px;font-weight:700;line-height:1.5}
.story-quote{
  margin-top:12px;font-size:14.8px;color:var(--ink-2);line-height:1.85;
  border-left:3px solid var(--lime);padding-left:14px;
}
.story-stats{display:flex;flex-wrap:wrap;gap:8px 12px;margin-top:16px}
.story-stats span{font-size:12.5px;color:var(--brand);background:var(--brand-l);padding:3px 10px;border-radius:999px;font-variant-numeric:tabular-nums}
/* ============ 价格卡 ============ */
.price-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px 26px 30px;height:100%;display:flex;flex-direction:column;
  box-shadow:var(--sh);transition:box-shadow var(--t),transform var(--t),border-color var(--t);
}
.price-card:hover{box-shadow:var(--sh-h);transform:translateY(-3px)}
.price-card.featured{border:2px solid var(--brand);box-shadow:0 14px 34px rgba(91,33,182,.16)}
.price-card h3{font-size:18px;font-weight:800}
.price-tier{font-size:13px;color:var(--ink-3);margin-top:6px}
.price-amount{margin-top:18px;display:flex;align-items:baseline;gap:6px}
.price-amount b{font-size:34px;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.price-amount span{font-size:14px;color:var(--ink-2)}
.price-list{margin-top:20px;display:flex;flex-direction:column;gap:11px;flex:1 1 auto}
.price-list li{display:flex;gap:10px;font-size:14.4px;color:var(--ink-2);line-height:1.75}
.price-list li::before{content:"✓";color:var(--lime-d);font-weight:800;flex:0 0 auto}
.price-card .btn{margin-top:24px;width:100%}
/* ============ 评价墙 ============ */
.review{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px 22px;
  height:100%;box-shadow:var(--sh);transition:box-shadow var(--t),transform var(--t);
}
.review:hover{box-shadow:var(--sh-h);transform:translateY(-3px)}
.review-top{display:flex;align-items:center;gap:12px}
.avatar{
  width:38px;height:38px;border-radius:50%;flex:0 0 auto;display:grid;place-items:center;
  background:linear-gradient(140deg,#5B21B6,#A3E635 190%);color:#fff;font-size:14px;font-weight:700;
}
.review-name{font-size:14.6px;font-weight:700}
.review-role{font-size:12.5px;color:var(--ink-3);margin-top:1px}
.stars{margin-top:12px;color:var(--lime);letter-spacing:2px;font-size:13.5px}
.review p{margin-top:8px;font-size:14.4px;color:var(--ink-2);line-height:1.82}
/* ============ 数据条 ============ */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  background:var(--dark);border-radius:var(--r-lg);overflow:hidden;color:#fff;
}
.stat{padding:32px 24px;border-right:1px solid rgba(255,255,255,.09)}
.stat:last-child{border-right:0}
.stat b{display:block;font-size:clamp(26px,3.2vw,36px);font-weight:800;color:var(--lime);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.stat span{display:block;margin-top:8px;font-size:14.2px;color:rgba(255,255,255,.68);line-height:1.7}
/* ============ FAQ ============ */
.faq{display:flex;flex-direction:column;gap:12px}
.faq details{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:0 22px;transition:border-color var(--t),box-shadow var(--t);
}
.faq details[open]{border-color:#D6CDF3;box-shadow:0 8px 22px rgba(91,33,182,.09)}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:19px 0;font-size:16.2px;font-weight:700;line-height:1.6;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary .ic{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:var(--brand-l);color:var(--brand);
  display:grid;place-items:center;font-size:15px;font-weight:800;transition:transform var(--t),background var(--t);
}
.faq details[open] summary .ic{transform:rotate(180deg);background:var(--brand);color:#fff}
.faq-body{padding:0 0 20px;font-size:15px;line-height:1.88;color:var(--ink-2);border-top:1px solid var(--line-2);padding-top:16px}
/* ============ 资讯列表 ============ */
.news-list{display:flex;flex-direction:column;gap:16px}
.news-item{
  display:grid;grid-template-columns:196px 1fr;gap:22px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:16px;box-shadow:var(--sh);transition:box-shadow var(--t),transform var(--t);
}
.news-item:hover{box-shadow:var(--sh-h);transform:translateY(-3px)}
.news-item img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-sm)}
.news-item h3{font-size:16.6px;font-weight:700;line-height:1.55}
.news-item p{margin-top:8px;font-size:14.3px;color:var(--ink-2);line-height:1.8}
.news-meta{display:flex;align-items:center;gap:12px;margin-top:12px;font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums}
/* ============ 专题/标签云 ============ */
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;align-items:center;padding:8px 15px;border-radius:999px;
  border:1px solid var(--line);background:#fff;font-size:14px;color:var(--ink-2);
  transition:all var(--t);
}
.chip:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-l);transform:translateY(-2px)}
/* ============ CTA 通栏 ============ */
.cta-band{position:relative;overflow:hidden;background:var(--dark);color:#fff}
.cta-band .cta-bg{
  position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.jpg');
  background-size:cover;background-position:center;opacity:.22;
}
.cta-band-inner{position:relative;z-index:2;padding:70px 0;text-align:center}
.cta-band h2{font-size:clamp(24px,3vw,33px);font-weight:800;line-height:1.36;letter-spacing:-.01em}
.cta-band p{margin-top:16px;color:rgba(255,255,255,.7);font-size:16px;max-width:660px;margin-left:auto;margin-right:auto}
.cta-chips{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:24px}
.cta-chips span{
  font-size:13px;padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);color:rgba(255,255,255,.86);
}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:30px}
/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);margin-top:0;border-top:1px solid rgba(255,255,255,.08)}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px;
  padding:62px 0 42px;
}
.footer-brand{display:flex;align-items:center;gap:11px;color:#fff;margin-bottom:16px}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:10px;font-size:15px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-col p{font-size:14px;line-height:1.86;color:rgba(255,255,255,.6)}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14.2px;color:rgba(255,255,255,.68);transition:color var(--t),padding-left var(--t)}
.footer-col a:hover{color:var(--lime);padding-left:4px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.09);padding:22px 0;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13.2px;color:rgba(255,255,255,.46);
}
/* ============ 响应式 ============ */
@media (max-width:1080px){
  :root{--sidebar:224px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .demo-grid{grid-template-columns:1fr;gap:32px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid rgba(255,255,255,.09)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:900px){
  .app-sidebar{
    transform:translateX(-104%);width:272px;transition:transform .28s cubic-bezier(.4,0,.2,1);
    box-shadow:0 24px 60px rgba(0,0,0,.45);padding-top:20px;
  }
  .app-sidebar.open{transform:translateX(0)}
  .mobile-bar{display:flex}
  .app-main{margin-left:0}
  .sidebar-close{
    display:grid;place-items:center;position:absolute;top:16px;right:14px;
    width:34px;height:34px;border-radius:9px;background:rgba(255,255,255,.1);color:#fff;font-size:16px;
  }
  .section{padding:56px 0}
  .hero-inner{padding:52px 0 60px}
  .matrix-row{grid-template-columns:1fr;gap:8px}
  .matrix-val{text-align:left}
  .story{grid-template-columns:1fr}
  .story img{min-height:158px;aspect-ratio:16/9}
  .news-item{grid-template-columns:1fr;gap:14px}
  .rail-item{flex:0 0 232px}
}
@media (max-width:640px){
  :root{--wrap:100%}
  body{font-size:16px;line-height:1.85}
  .wrap{padding:0 18px}
  .hero h1{font-size:28px}
  .hero-actions{gap:12px}
  .hero-actions .btn{width:100%}
  .remind-form{flex-direction:column}
  .remind-form .btn{width:100%}
  .countdown{gap:8px}
  .cd-cell b{font-size:19px}
  .stats{grid-template-columns:1fr}
  .stat{border-right:0;border-bottom:1px solid rgba(255,255,255,.09)}
  .stat:last-child{border-bottom:0}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:44px 0 32px}
  .card{padding:20px}
  .price-card{padding:24px 20px}
  .cta-band-inner{padding:52px 0}
  .tab-btn{padding:9px 16px;font-size:14px}
}

/* roulang page: category1 */
/* ============ 设计系统变量（与首页一致） ============ */
:root{
 --brand:#5B21B6;
 --brand-d:#4C1D95;
 --brand-l:#F1ECFE;
 --lime:#A3E635;
 --lime-d:#65A30D;
 --amber:#F59E0B;
 --ink:#171A2B;
 --ink-2:#5A5F76;
 --ink-3:#8B90A6;
 --bg:#FFFFFF;
 --bg-2:#F4F4F8;
 --bg-3:#EEF0FF;
 --dark:#0E0F1A;
 --line:#E6E7F2;
 --line-2:#E3E4EF;
 --r-sm:10px;
 --r:12px;
 --r-lg:16px;
 --sh:0 2px 6px rgba(23,26,43,.05);
 --sh-h:0 10px 24px rgba(91,33,182,.14);
 --wrap:1180px;
 --sidebar:224px;
 --t:180ms ease;
}
/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
 margin:0;
 font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
 font-size:16.5px;
 line-height:1.86;
 color:var(--ink);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
 text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.42;color:var(--ink)}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color var(--t)}
img{display:block;max-width:100%;height:auto;border:0}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 32px;width:100%}
/* ============ App Shell 布局 ============ */
.app-main{margin-left:var(--sidebar);min-height:100vh;display:flex;flex-direction:column;background:var(--bg)}
main{flex:1 0 auto}
.sidebar{
 position:fixed;top:0;left:0;bottom:0;width:var(--sidebar);z-index:80;
 background:var(--dark);padding:26px 20px 30px;display:flex;flex-direction:column;
 overflow-y:auto;transition:transform 240ms ease;
}
.sidebar-brand{padding:0 6px 22px}
.sidebar-brand a{display:flex;align-items:center;gap:11px;color:#fff}
.brand-mark{
 flex:0 0 auto;width:38px;height:38px;border-radius:11px;
 background:linear-gradient(135deg,#5B21B6,#7C3AED 70%,#A3E635 160%);
 display:grid;place-items:center;font-size:17px;font-weight:800;color:#fff;
}
.brand-text{font-size:18.5px;font-weight:800;letter-spacing:-.01em;line-height:1.2}
.brand-sub{display:block;font-size:12px;color:rgba(255,255,255,.42);font-weight:400;letter-spacing:.02em;margin-top:3px}
.sidebar-nav{display:flex;flex-direction:column;gap:4px;margin-top:6px}
.nav-label{font-size:11.5px;letter-spacing:.16em;color:rgba(255,255,255,.34);padding:14px 14px 8px}
.nav-item{
 position:relative;display:flex;align-items:center;gap:10px;
 padding:11px 14px;border-radius:var(--r-sm);
 font-size:15px;color:rgba(255,255,255,.72);
 transition:background var(--t),color var(--t);
}
.nav-item .dot{width:6px;height:6px;border-radius:50%;background:rgba(255,255,255,.28);flex:0 0 auto;transition:background var(--t)}
.nav-item:hover{background:rgba(91,33,182,.38);color:#fff}
.nav-item:hover .dot{background:var(--lime)}
.nav-item.active{background:var(--brand);color:#fff;font-weight:600}
.nav-item.active .dot{background:var(--lime)}
.nav-item.active::before{content:"";position:absolute;left:-16px;top:50%;transform:translateY(-50%);width:3px;height:22px;background:var(--lime);border-radius:2px}
.sidebar-foot{margin-top:auto;padding:18px 14px 0;border-top:1px solid rgba(255,255,255,.1);font-size:12.5px;color:rgba(255,255,255,.4);line-height:1.8}
.sidebar-foot strong{color:rgba(255,255,255,.72);font-weight:600;display:block;font-size:13px;margin-bottom:4px}
.drawer-close{display:none;margin-left:auto;color:rgba(255,255,255,.7);font-size:22px;line-height:1;padding:6px 10px;border-radius:8px}
.drawer-close:hover{background:rgba(255,255,255,.12);color:#fff}
.mobile-bar{
 display:none;position:sticky;top:0;z-index:90;height:60px;align-items:center;gap:12px;
 padding:0 16px;background:rgba(14,15,26,.98);color:#fff;
 border-bottom:1px solid rgba(255,255,255,.08);
}
.mobile-bar .brand-text{font-size:17px;color:#fff}
.burger{display:flex;flex-direction:column;gap:4px;padding:8px;border-radius:8px}
.burger span{display:block;width:18px;height:2px;background:#fff;border-radius:2px}
.burger:hover{background:rgba(255,255,255,.12)}
.drawer-mask{display:none;position:fixed;inset:0;background:rgba(14,15,26,.55);z-index:70}
.drawer-mask.on{display:block}
/* ============ 按钮 ============ */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:12px 22px;border-radius:var(--r-sm);font-size:15px;font-weight:600;
 transition:background var(--t),color var(--t),box-shadow var(--t),transform var(--t),border-color var(--t);
 white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 4px 14px rgba(91,33,182,.24)}
.btn-primary:hover{background:var(--brand-d);transform:translateY(-2px);box-shadow:0 10px 22px rgba(91,33,182,.3)}
.btn-outline{border:1.5px solid var(--brand);color:var(--brand);background:transparent}
.btn-outline:hover{background:var(--brand-l);transform:translateY(-2px)}
.btn-lime{background:var(--lime);color:#1A2410;font-weight:700}
.btn-lime:hover{background:#BEF264;transform:translateY(-2px);box-shadow:0 10px 22px rgba(163,230,53,.3)}
.btn-ghost{border:1.5px solid rgba(255,255,255,.34);color:#fff;background:rgba(255,255,255,.06)}
.btn-ghost:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.6);transform:translateY(-2px)}
.btn-sm{padding:9px 16px;font-size:14px}
/* ============ 标签 ============ */
.tag{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:999px;font-size:12.5px;font-weight:600;background:var(--bg-3);color:var(--brand)}
.tag-lime{background:rgba(163,230,53,.2);color:var(--lime-d)}
.tag-amber{background:rgba(245,158,11,.16);color:#B45309}
.tag-line{background:transparent;border:1px solid var(--line);color:var(--ink-2);font-weight:500}
/* ============ 板块通用 ============ */
.section{padding:80px 0;border-top:1px solid var(--line-2)}
.section--tint{background:var(--bg-2)}
.section--lilac{background:var(--bg-3)}
.section-head{max-width:780px;margin-bottom:36px}
.section-head h2{font-size:clamp(24px,2.6vw,31px);font-weight:800;line-height:1.4;position:relative;padding-left:16px}
.section-head h2::before{content:"";position:absolute;left:0;top:.32em;bottom:.28em;width:5px;border-radius:3px;background:linear-gradient(180deg,var(--brand),var(--lime))}
.section-head p{margin-top:14px;color:var(--ink-2);font-size:16px;line-height:1.9}
/* ============ 板块01 分类 H1 区 ============ */
.cat-head{padding:34px 0 30px;background:var(--bg-2);border-top:0;border-bottom:1px solid var(--line-2)}
.cat-head-inner{display:flex;align-items:center;gap:34px;min-height:186px}
.cat-head-text{flex:1 1 auto;min-width:0}
.crumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-3);margin-bottom:14px}
.crumb a:hover{color:var(--brand)}
.crumb span.sep{color:#C3C6D6}
.cat-head h1{font-size:clamp(26px,3.1vw,38px);font-weight:800;letter-spacing:-.01em}
.cat-head h1 em{font-style:normal;color:var(--brand)}
.cat-head .lede{margin-top:14px;color:var(--ink-2);font-size:16.5px;line-height:1.9;max-width:720px}
.cat-head-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.cat-head-thumb{flex:0 0 268px;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh);background:#fff}
.cat-head-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover}
/* ============ 板块02 筛选条 ============ */
.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:18px 0 0}
.chip{
 display:inline-flex;align-items:center;gap:7px;padding:8px 16px;border-radius:999px;
 font-size:14px;font-weight:600;color:var(--ink-2);background:#fff;
 border:1px solid var(--line);cursor:pointer;transition:all var(--t);
}
.chip:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-l)}
.chip.on{background:var(--brand);color:#fff;border-color:var(--brand)}
.filter-note{margin-left:auto;font-size:13.5px;color:var(--ink-3)}
/* ============ 板块03 卡片列表主体 ============ */
.card-grid{margin-top:6px}
.v-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--r);
 box-shadow:var(--sh);overflow:hidden;height:100%;
 display:flex;flex-direction:column;
 transition:box-shadow var(--t),transform var(--t);
}
.v-card:hover{box-shadow:var(--sh-h);transform:translateY(-3px)}
.v-card-cover{position:relative;overflow:hidden;background:var(--bg-2)}
.v-card-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 320ms ease}
.v-card:hover .v-card-cover img{transform:scale(1.03)}
.v-card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto}
.v-card-body h3{font-size:17.5px;font-weight:700;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.v-card-body p{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.v-card-foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;gap:12px;font-size:13.5px;color:var(--ink-3);font-variant-numeric:tabular-nums}
.v-card-foot .dot-sep{width:4px;height:4px;border-radius:50%;background:#CFD2E1}
.v-card-foot .tag{margin-left:auto}
.badge-hot{position:absolute;top:12px;left:12px;z-index:2;background:var(--amber);color:#3A2400;font-size:12px;font-weight:700;padding:3px 9px;border-radius:8px}
.badge-lime{position:absolute;top:12px;left:12px;z-index:2;background:var(--lime);color:#1F2A0C;font-size:12px;font-weight:700;padding:3px 9px;border-radius:8px}
.duration{position:absolute;right:12px;bottom:12px;z-index:2;background:rgba(14,15,26,.78);color:#fff;font-size:12.5px;font-weight:600;padding:3px 9px;border-radius:8px;font-variant-numeric:tabular-nums}
.list-more{margin-top:34px;text-align:center}
/* ============ 板块04 精选推荐 ============ */
.feature-list{display:flex;flex-direction:column;gap:20px}
.feature-card{
 display:flex;gap:24px;align-items:stretch;background:#fff;border:1px solid var(--line);
 border-radius:var(--r-lg);box-shadow:var(--sh);overflow:hidden;
 transition:box-shadow var(--t),transform var(--t);
}
.feature-card:hover{box-shadow:var(--sh-h);transform:translateY(-3px)}
.feature-thumb{flex:0 0 320px;overflow:hidden;background:var(--bg-2)}
.feature-thumb img{width:100%;height:100%;min-height:190px;object-fit:cover;transition:transform 320ms ease}
.feature-card:hover .feature-thumb img{transform:scale(1.03)}
.feature-body{padding:24px 26px 24px 0;display:flex;flex-direction:column;justify-content:center}
.feature-body h3{font-size:19.5px;font-weight:700}
.feature-body p{margin-top:10px;color:var(--ink-2);font-size:15px;line-height:1.88}
.feature-meta{margin-top:16px;display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:13.5px;color:var(--ink-3);font-variant-numeric:tabular-nums}
/* ============ 板块05 标签云 ============ */
.tag-cloud{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}
.tag-cloud .chip{background:#fff}
.tag-cloud .chip:hover{background:var(--brand-l)}
/* ============ 板块06 FAQ ============ */
.faq{max-width:900px}
.faq details{
 background:#fff;border:1px solid var(--line);border-radius:var(--r);
 box-shadow:var(--sh);margin-bottom:12px;overflow:hidden;transition:box-shadow var(--t),border-color var(--t);
}
.faq details:hover{box-shadow:var(--sh-h)}
.faq details[open]{border-color:#D9CCF6}
.faq summary{
 list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;
 padding:18px 22px;font-size:16.5px;font-weight:700;line-height:1.6;color:var(--ink);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary .plus{
 flex:0 0 auto;margin-left:auto;width:22px;height:22px;border-radius:50%;
 background:var(--bg-3);color:var(--brand);display:grid;place-items:center;
 font-size:15px;font-weight:700;transition:transform var(--t),background var(--t);
}
.faq details[open] summary .plus{transform:rotate(180deg);background:var(--brand);color:#fff}
.faq .faq-body{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--ink-2)}
/* ============ 板块07 相关资讯 ============ */
.news-list{border-top:1px solid var(--line-2)}
.news-item{
 display:flex;align-items:center;gap:20px;padding:20px 4px;border-bottom:1px solid var(--line-2);
 transition:background var(--t),padding var(--t);
}
.news-item:hover{background:var(--bg-2);padding-left:14px;padding-right:14px}
.news-item .n-date{flex:0 0 96px;font-size:13.5px;color:var(--ink-3);font-variant-numeric:tabular-nums}
.news-item .n-title{font-size:16.5px;font-weight:600;flex:1 1 auto}
.news-item:hover .n-title{color:var(--brand)}
.news-item .tag{flex:0 0 auto}
/* ============ 板块08 订阅提示条 ============ */
.subscribe{
 position:relative;overflow:hidden;background:var(--dark);color:#fff;
 border-radius:var(--r-lg);padding:46px 48px;
}
.subscribe-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-4.jpg');background-size:cover;background-position:center;opacity:.22}
.subscribe::after{content:"";position:absolute;inset:0;background:linear-gradient(110deg,rgba(14,15,26,.94),rgba(60,24,120,.72))}
.subscribe-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;gap:28px}
.subscribe-text{flex:1 1 420px;min-width:0}
.subscribe-text h2{color:#fff;font-size:clamp(22px,2.4vw,28px)}
.subscribe-text p{margin-top:12px;color:rgba(255,255,255,.72);font-size:15.5px;line-height:1.85}
.subscribe-form{flex:0 0 auto;display:flex;flex-wrap:wrap;gap:12px;align-items:flex-start}
.subscribe-form input[type="email"]{
 height:46px;width:280px;max-width:100%;padding:0 16px;border-radius:var(--r-sm);
 border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.1);color:#fff;
 transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.subscribe-form input[type="email"]::placeholder{color:rgba(255,255,255,.5)}
.subscribe-form input[type="email"]:focus{outline:none;border-color:var(--lime);box-shadow:0 0 0 3px rgba(163,230,53,.24);background:rgba(255,255,255,.16)}
.form-msg{width:100%;font-size:13px;color:var(--amber);min-height:18px}
.form-msg.ok{color:var(--lime)}
/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:rgba(255,255,255,.7);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-col h4{color:#fff;font-size:14px;font-weight:700;letter-spacing:.02em;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.68)}
.footer-col a:hover{color:var(--lime)}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-col p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62)}
.footer-bottom{
 margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
 display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13.5px;color:rgba(255,255,255,.46);
}
/* ============ 响应式 ============ */
@media (max-width:1100px){
 :root{--sidebar:210px}
 .feature-thumb{flex:0 0 260px}
}
@media (max-width:900px){
 .sidebar{transform:translateX(-100%);box-shadow:0 0 42px rgba(0,0,0,.45);width:264px;padding-top:18px}
 .sidebar.open{transform:none}
 .drawer-close{display:block}
 .app-main{margin-left:0}
 .mobile-bar{display:flex}
 .wrap{padding:0 20px}
 .section{padding:56px 0}
 .cat-head{padding:26px 0 24px}
 .cat-head-inner{flex-direction:column;align-items:flex-start;gap:22px;min-height:0}
 .cat-head-thumb{flex:0 0 auto;width:100%}
 .feature-card{flex-direction:column}
 .feature-thumb{flex:0 0 auto}
 .feature-thumb img{min-height:0;aspect-ratio:16/9}
 .feature-body{padding:0 22px 24px}
 .subscribe{padding:34px 26px}
 .subscribe-form input[type="email"]{width:100%}
 .subscribe-form .btn{width:100%}
 .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
 .filter-note{margin-left:0;width:100%}
}
@media (max-width:640px){
 :root{--wrap:100%}
 body{font-size:16px}
 .cat-head h1{font-size:26px}
 .section-head h2{font-size:23px}
 .section{padding:44px 0}
 .news-item{flex-wrap:wrap;gap:10px}
 .news-item .n-date{flex:0 0 auto}
 .news-item .n-title{flex:1 1 100%;order:3}
 .footer-grid{grid-template-columns:1fr}
 .footer-bottom{flex-direction:column}
 .btn{width:100%}
 .chip{font-size:13.5px;padding:8px 13px}
 .list-more .btn{width:auto}
}