/* roulang page: index */
:root{
  --brand:#6C4CF1;
  --brand-deep:#4B2FD6;
  --signal:#18C7B6;
  --amber:#F6B73C;
  --success:#1FA97A;
  --warn:#D9485F;
  --bg:#F6F5FA;
  --surface:#FFFFFF;
  --dark:#171226;
  --text:#1D1A2B;
  --muted:#5E5A70;
  --line:#E4E1F0;
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:12px;
  --shadow-sm:0 6px 18px rgba(23,18,38,.06);
  --shadow-md:0 12px 30px rgba(23,18,38,.08);
  --shadow-lg:0 24px 60px rgba(23,18,38,.14);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,opacity .2s ease;}
a:hover{color:var(--brand);}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;color:var(--text);}
p{margin:0;}
:focus-visible{outline:3px solid rgba(24,199,182,.55);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.section{padding:96px 0;}
.section-sm{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--brand);text-transform:uppercase;
  background:rgba(108,76,241,.09);
  border:1px solid rgba(108,76,241,.18);
  padding:6px 14px;border-radius:999px;margin-bottom:18px;
}
h1{font-size:clamp(2.25rem,6vw,4.4rem);line-height:1.12;font-weight:800;letter-spacing:-.02em;}
h2{font-size:clamp(1.5rem,3.2vw,2.5rem);line-height:1.2;}
h3{font-size:1.25rem;line-height:1.35;}
.lead{font-size:clamp(1rem,1.6vw,1.125rem);color:var(--muted);line-height:1.8;}

/* ------- 顶部导航 ------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 10px 28px rgba(23,18,38,.09);}
.nav-wrap{
  min-height:76px;
  display:flex;align-items:center;gap:20px;justify-content:space-between;
}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:17px;letter-spacing:-.01em;white-space:nowrap;}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 60%,var(--signal) 100%);
  display:grid;place-items:center;color:#fff;font-size:15px;font-weight:800;
  box-shadow:0 8px 18px rgba(108,76,241,.35);
}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;padding:10px 14px;border-radius:12px;
  font-size:15px;font-weight:600;color:var(--muted);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.nav-link:hover{color:var(--brand);background:rgba(108,76,241,.07);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-cta{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.drawer-backdrop{
  position:fixed;inset:0;background:rgba(23,18,38,.45);opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;z-index:70;
}
.drawer-backdrop.open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);
  background:#fff;z-index:80;padding:26px 22px;
  transform:translateX(105%);transition:transform .28s ease;
  display:flex;flex-direction:column;gap:18px;box-shadow:var(--shadow-lg);
  overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);font-size:20px;line-height:1;color:var(--muted);}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 16px;border-radius:14px;border:1px solid var(--line);
  font-weight:600;color:var(--text);
}
.drawer-link:hover{background:rgba(108,76,241,.07);color:var(--brand);border-color:rgba(108,76,241,.3);}

/* ------- 按钮 ------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-weight:700;font-size:15px;
  height:48px;padding:0 24px;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 12px 26px rgba(108,76,241,.3);}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:0 18px 34px rgba(75,47,214,.34);}
.btn-primary:active{transform:translateY(0);box-shadow:0 8px 18px rgba(75,47,214,.3);}
.btn-outline{background:#fff;color:var(--brand);border:1px solid rgba(108,76,241,.5);}
.btn-outline:hover{background:rgba(108,76,241,.08);color:var(--brand-deep);border-color:var(--brand);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--brand);border:1px solid rgba(108,76,241,.3);}
.btn-ghost:hover{background:rgba(108,76,241,.08);}
.btn-light{background:#fff;color:var(--brand);}
.btn-light:hover{background:#EDE8FF;color:var(--brand-deep);transform:translateY(-1px);}
.btn-lg{height:58px;padding:0 32px;font-size:16.5px;}
.btn-sm{height:44px;padding:0 20px;font-size:15px;}
.btn-block{width:100%;}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;}

/* ------- 徽章与标签 ------- */
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:700;
  background:rgba(108,76,241,.1);color:var(--brand);
  border:1px solid rgba(108,76,241,.2);
}
.badge-cyan{background:rgba(24,199,182,.12);color:#0E8C80;border-color:rgba(24,199,182,.28);}
.badge-amber{background:rgba(246,183,60,.16);color:#A26A05;border-color:rgba(246,183,60,.35);}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;
  font-size:12.5px;font-weight:700;letter-spacing:.02em;
  background:rgba(108,76,241,.09);color:var(--brand);
  border:1px solid rgba(108,76,241,.16);
}

/* ------- Hero ------- */
.hero{position:relative;overflow:hidden;padding:72px 0 88px;}
.hero-bg{position:absolute;inset:0;z-index:0;}
.hero-bg img{width:100%;height:100%;object-fit:cover;}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(900px 480px at 12% 10%, rgba(108,76,241,.16), transparent 62%),
    linear-gradient(180deg, rgba(246,245,250,.93) 0%, rgba(246,245,250,.97) 62%, var(--bg) 100%);
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;
}
.hero-copy h1{margin:20px 0 20px;}
.hero-sub{
  font-size:clamp(1.05rem,1.7vw,1.25rem);
  color:var(--muted);font-weight:500;max-width:560px;margin-bottom:30px;
}
.hero-actions{margin-bottom:34px;}
.trust-list{display:flex;flex-wrap:wrap;gap:14px 26px;}
.trust-list li{display:flex;align-items:center;gap:9px;font-size:14.5px;color:var(--muted);font-weight:600;}
.trust-dot{
  width:22px;height:22px;border-radius:50%;flex:0 0 22px;
  background:rgba(31,169,122,.14);color:var(--success);
  display:grid;place-items:center;font-size:12px;font-weight:800;
}

/* ------- 登录卡 ------- */
.panel{
  background:var(--surface);border-radius:var(--radius-lg);
  border:1px solid rgba(108,76,241,.12);
  box-shadow:var(--shadow-lg);
  padding:26px;position:relative;overflow:hidden;
}
.panel::before{
  content:"";position:absolute;top:-70px;right:-70px;width:180px;height:180px;border-radius:50%;
  background:radial-gradient(circle,rgba(24,199,182,.24),transparent 68%);
}
.panel-head{position:relative;display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.panel-title{font-size:1.15rem;font-weight:800;}
.panel-sub{font-size:13.5px;color:var(--muted);}
.tabs{
  position:relative;display:grid;grid-template-columns:1fr 1fr;gap:6px;
  background:var(--bg);border-radius:999px;padding:6px;margin-bottom:22px;
}
.tab{
  height:44px;border-radius:999px;font-weight:700;font-size:15px;color:var(--muted);
  transition:background-color .22s ease,color .22s ease,box-shadow .22s ease;
}
.tab:hover{color:var(--brand);}
.tab.is-active{background:#fff;color:var(--brand);box-shadow:var(--shadow-sm);}
.pane{display:none;}
.pane.is-active{display:block;animation:fadeUp .28s ease;}
@keyframes fadeUp{from{opacity:0;transform:translateY(6px);}to{opacity:1;transform:translateY(0);}}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:700;margin-bottom:7px;}
.field input,.field textarea{
  width:100%;height:48px;padding:0 15px;
  border:1px solid var(--line);border-radius:var(--radius-sm);
  background:#fff;transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:auto;min-height:112px;padding:13px 15px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:#A9A5BC;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,76,241,.2);
}
.field-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:4px 0 18px;font-size:14px;}
.check{display:flex;align-items:flex-start;gap:9px;font-size:13.5px;color:var(--muted);line-height:1.6;}
.check input{width:18px;height:18px;flex:0 0 18px;margin-top:2px;accent-color:var(--brand);}
.link-inline{color:var(--brand);font-weight:700;}
.link-inline:hover{color:var(--brand-deep);text-decoration:underline;}
.form-msg{font-size:14px;font-weight:600;margin-top:12px;min-height:0;}
.form-msg.ok{color:var(--success);}
.form-msg.err{color:var(--warn);}
.panel-foot{
  margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);
  font-size:13px;color:var(--muted);display:flex;gap:8px;align-items:flex-start;
}

/* ------- 权益矩阵 ------- */
.matrix-shell{
  background:#fff;border-radius:var(--radius-lg);
  border:1px solid rgba(108,76,241,.12);box-shadow:var(--shadow-md);
  overflow:hidden;
}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}
.matrix{width:100%;min-width:820px;border-collapse:separate;border-spacing:0;}
.matrix th,.matrix td{padding:18px 20px;text-align:left;vertical-align:middle;}
.matrix thead th{
  font-size:14px;font-weight:800;color:var(--text);
  background:#FBFAFF;border-bottom:1px solid var(--line);
}
.matrix thead th:first-child{font-size:14px;color:var(--muted);}
.matrix tbody td{border-bottom:1px solid var(--line);font-size:15px;color:var(--text);}
.matrix tbody tr:last-child td{border-bottom:none;}
.matrix tbody td:first-child{font-weight:700;color:var(--muted);font-size:14.5px;}
.col-featured{background:rgba(108,76,241,.055);}
.matrix thead th.col-featured{
  background:#F1EDFF;
  box-shadow:inset 2px 0 0 var(--brand),inset -2px 0 0 var(--brand),inset 0 4px 0 var(--brand);
}
.matrix tbody td.col-featured{
  background:rgba(108,76,241,.075);
  box-shadow:inset 2px 0 0 var(--brand),inset -2px 0 0 var(--brand);
}
.matrix tbody tr:last-child td.col-featured{box-shadow:inset 2px 0 0 var(--brand),inset -2px 0 0 var(--brand),inset 0 -2px 0 var(--brand);}
.plan-name{display:flex;align-items:center;gap:10px;font-size:16.5px;font-weight:800;}
.plan-price{font-size:13px;color:var(--muted);font-weight:600;margin-top:4px;}
.mark-yes{color:var(--success);font-weight:800;}
.mark-no{color:#B4B0C4;font-weight:700;}
.mark-mid{color:var(--amber);font-weight:800;}
.matrix-cta-row td{padding-top:22px;}
.matrix-note{margin-top:18px;font-size:13.5px;color:var(--muted);text-align:center;}

/* ------- 等级亮点 ------- */
.levels-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;align-items:start;}
.level-card{
  position:relative;background:#fff;border-radius:var(--radius-lg);
  border:1px solid rgba(108,76,241,.12);box-shadow:var(--shadow-md);
  padding:30px 26px 26px;overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.level-card::before{content:"";position:absolute;top:0;left:0;right:0;height:5px;background:var(--brand);}
.level-card.lv-2::before{background:var(--signal);}
.level-card.lv-3::before{background:var(--amber);}
.level-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(108,76,241,.3);}
.level-card.lift-1{margin-top:34px;}
.level-card.lift-2{margin-top:0;}
.level-card.lift-3{margin-top:68px;}
.level-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px;}
.level-badge{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12.5px;font-weight:800;letter-spacing:.04em;
  padding:5px 12px;border-radius:999px;
  background:rgba(108,76,241,.1);color:var(--brand);
}
.lv-2 .level-badge{background:rgba(24,199,182,.13);color:#0E8C80;}
.lv-3 .level-badge{background:rgba(246,183,60,.18);color:#A26A05;}
.level-code{font-size:12.5px;color:var(--muted);font-weight:700;letter-spacing:.1em;}
.level-card h3{margin-bottom:6px;}
.level-cap{font-size:14px;color:var(--muted);margin-bottom:18px;}
.level-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--muted);padding:8px 0;border-bottom:1px dashed var(--line);}
.level-list li:last-child{border-bottom:none;}
.level-list b{color:var(--text);font-weight:700;}
.tick{color:var(--brand);font-weight:800;flex:0 0 auto;}
.lv-2 .tick{color:#0E8C80;}
.lv-3 .tick{color:#A26A05;}
.level-foot{margin-top:22px;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.level-meta{font-size:13px;color:var(--muted);font-weight:600;}

/* ------- 内容预览 ------- */
.preview-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr;gap:24px;}
.preview-card{
  display:flex;flex-direction:column;background:#fff;border-radius:var(--radius-lg);
  border:1px solid rgba(108,76,241,.12);box-shadow:var(--shadow-sm);overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.preview-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(108,76,241,.3);}
.preview-thumb{position:relative;overflow:hidden;aspect-ratio:16/10;background:#EFECFA;}
.preview-card.feature .preview-thumb{aspect-ratio:16/9;}
.preview-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.preview-card:hover .preview-thumb img{transform:scale(1.04);}
.thumb-tag{position:absolute;top:14px;left:14px;background:rgba(23,18,38,.72);color:#fff;border:none;}
.preview-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.preview-body h3{font-size:1.15rem;}
.preview-card.feature .preview-body h3{font-size:1.5rem;line-height:1.3;}
.preview-body p{font-size:14.5px;color:var(--muted);line-height:1.7;}
.preview-meta{margin-top:auto;font-size:13px;color:var(--muted);display:flex;gap:14px;flex-wrap:wrap;font-weight:600;}

/* ------- 最新信息（列表卡片） ------- */
.posts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  display:flex;flex-direction:column;background:#fff;border-radius:var(--radius-lg);
  border:1px solid rgba(108,76,241,.12);box-shadow:var(--shadow-sm);overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(108,76,241,.3);}
.post-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:#EFECFA;}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.post-card:hover .post-thumb img{transform:scale(1.03);}
.post-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-body h3{font-size:1.125rem;line-height:1.45;}
.post-body p{font-size:14.5px;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{margin-top:auto;display:flex;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--muted);font-weight:600;}
.empty-state{
  grid-column:1/-1;text-align:center;padding:64px 24px;
  background:#fff;border:1px dashed rgba(108,76,241,.3);border-radius:var(--radius-lg);
}
.empty-icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:20px;
  background:rgba(108,76,241,.1);color:var(--brand);
  display:grid;place-items:center;font-size:26px;font-weight:800;
}
.empty-state p{color:var(--muted);margin-bottom:20px;}

/* ------- 数据条 ------- */
.stats-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  background:#fff;border-radius:var(--radius-lg);
  border:1px solid rgba(108,76,241,.12);box-shadow:var(--shadow-sm);
  padding:30px 26px;
}
.stat{text-align:center;}
.stat b{display:block;font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:800;color:var(--brand);letter-spacing:-.02em;line-height:1.2;}
.stat span{font-size:13.5px;color:var(--muted);font-weight:600;}

/* ------- FAQ ------- */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  margin-bottom:14px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.open{border-color:rgba(108,76,241,.45);box-shadow:var(--shadow-sm);border-left:3px solid var(--brand);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;text-align:left;font-size:17px;font-weight:700;color:var(--text);
}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  background:rgba(108,76,241,.1);color:var(--brand);
  display:grid;place-items:center;font-size:16px;font-weight:800;
  transition:transform .25s ease,background-color .25s ease;
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--brand);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease;}
.faq-a p{padding:0 22px 20px;color:var(--muted);font-size:15.5px;line-height:1.8;}

/* ------- 深色 CTA ------- */
.cta-band{
  background:var(--dark);color:#fff;border-radius:28px;
  padding:clamp(34px,5vw,60px);position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;top:-120px;right:-80px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,76,241,.55),transparent 65%);
}
.cta-band::after{
  content:"";position:absolute;bottom:-140px;left:-90px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(24,199,182,.35),transparent 66%);
}
.cta-inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;}
.cta-band h2{color:#fff;margin-bottom:16px;}
.cta-band p{color:#C9C3DE;font-size:16px;max-width:520px;}
.cta-points{margin:24px 0 28px;display:grid;gap:10px;}
.cta-points li{display:flex;gap:10px;align-items:flex-start;color:#DCD7EE;font-size:15px;}
.cta-points .tick{color:var(--signal);}
.cta-form{
  position:relative;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);border-radius:22px;
  padding:24px;backdrop-filter:blur(8px);
}
.cta-form .field label{color:#EDEAF8;}
.cta-form .field input,.cta-form .field textarea{
  background:rgba(255,255,255,.94);border-color:rgba(255,255,255,.3);
}
.cta-form .check{color:#C9C3DE;}
.cta-form .form-msg.ok{color:#6FE3C6;}
.cta-form .form-msg.err{color:#FF9BA9;}

/* ------- 页脚 ------- */
.site-footer{background:var(--dark);color:#CFCADF;margin-top:96px;padding:66px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:38px;}
.footer-brand{display:flex;align-items:center;gap:12px;font-weight:800;color:#fff;font-size:16.5px;margin-bottom:16px;}
.footer-brand .brand-mark{box-shadow:none;}
.site-footer p{font-size:14px;line-height:1.85;color:#A9A2C4;max-width:340px;}
.footer-title{font-size:14px;font-weight:800;color:#fff;letter-spacing:.04em;margin-bottom:16px;}
.footer-list li{margin-bottom:10px;}
.footer-list a{font-size:14px;color:#CFCADF;}
.footer-list a:hover{color:var(--signal);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8E88AC;
}
.footer-bottom a{color:#8E88AC;}
.footer-bottom a:hover{color:var(--signal);}

/* ------- 响应式 ------- */
@media (max-width:1024px){
  .section{padding:72px 0;}
  .hero{padding:56px 0 72px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-sub{max-width:none;}
  .levels-grid{grid-template-columns:1fr;gap:20px;}
  .level-card.lift-1,.level-card.lift-2,.level-card.lift-3{margin-top:0;}
  .preview-grid{grid-template-columns:1fr 1fr;}
  .preview-card.feature{grid-column:1/-1;}
  .posts-grid{grid-template-columns:repeat(2,1fr);}
  .cta-inner{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:flex;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .brand-text{font-size:15px;}
  .stats-strip{grid-template-columns:1fr 1fr;gap:24px 16px;}
  .posts-grid{grid-template-columns:1fr;}
  .section{padding:60px 0;}
  .hero{padding:44px 0 60px;}
  .panel{padding:22px;}
  .btn-row .btn{flex:1 1 auto;}
}
@media (max-width:520px){
  .preview-grid{grid-template-columns:1fr;}
  .btn-lg{width:100%;}
  .trust-list{gap:10px 18px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-form{padding:20px;}
}

/* roulang page: article */
:root{
  --primary:#6C4CF1;
  --primary-deep:#4B2FD6;
  --primary-soft:rgba(108,76,241,.08);
  --primary-line:rgba(108,76,241,.12);
  --primary-line-strong:rgba(108,76,241,.3);
  --cyan:#18C7B6;
  --amber:#F6B73C;
  --success:#1FA97A;
  --danger:#D9485F;
  --bg:#F6F5FA;
  --surface:#FFFFFF;
  --dark:#171226;
  --dark-2:#221A38;
  --text:#1D1A2B;
  --muted:#5E5A70;
  --border:#E4E1F0;
  --radius-sm:12px;
  --radius-md:18px;
  --radius-lg:24px;
  --shadow-sm:0 6px 18px rgba(23,18,38,.06);
  --shadow-md:0 12px 30px rgba(23,18,38,.08);
  --shadow-lg:0 22px 48px rgba(23,18,38,.14);
  --gap-section:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{
  outline:none;
  box-shadow:0 0 0 3px rgba(24,199,182,.35);
  border-radius:10px;
}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}
.section{padding:var(--gap-section) 0;}
.section-tight{padding:64px 0;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--primary);
  text-transform:uppercase;
}
.eyebrow::before{
  content:"";
  width:22px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--cyan));
}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{
  font-size:clamp(1.5rem,3.2vw,2.5rem);
  line-height:1.2;
  font-weight:800;
  letter-spacing:-.01em;
  margin:14px 0 12px;
}
.section-head p{color:var(--muted);font-size:16px;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 28px rgba(23,18,38,.09);}
.nav-wrap{
  height:78px;
  display:flex;align-items:center;gap:18px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:42px;height:42px;flex-shrink:0;
  display:grid;place-items:center;
  border-radius:13px;
  background:linear-gradient(140deg,var(--primary),var(--primary-deep) 62%,#2A1B72);
  color:#fff;font-weight:800;font-size:17px;letter-spacing:.02em;
  box-shadow:0 10px 22px rgba(108,76,241,.32);
  transform:skewX(-6deg);
}
.brand-text{
  font-weight:800;font-size:17px;letter-spacing:-.01em;
  white-space:nowrap;
}
.nav-links{
  display:flex;align-items:center;gap:6px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  padding:9px 15px;
  border-radius:999px;
  font-size:15px;font-weight:600;
  color:var(--muted);
}
.nav-link::after{
  content:"";
  position:absolute;left:15px;right:15px;bottom:5px;height:2px;
  border-radius:2px;background:var(--primary);
  transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.nav-link:hover{color:var(--primary);background:var(--primary-soft);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--primary);background:var(--primary-soft);}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-cta{display:flex;align-items:center;gap:10px;margin-left:10px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;
  border:1px solid transparent;
  border-radius:999px;
  font-size:15px;font-weight:700;
  letter-spacing:.01em;
  transition:transform .2s ease,background-color .2s ease,color .2s ease,box-shadow .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--primary);color:#fff;
  box-shadow:0 12px 26px rgba(108,76,241,.3);
}
.btn-primary:hover{background:var(--primary-deep);transform:translateY(-1px);box-shadow:0 16px 32px rgba(108,76,241,.38);}
.btn-primary:active{transform:translateY(0);box-shadow:0 8px 18px rgba(108,76,241,.28);}
.btn-ghost{
  background:transparent;color:var(--primary);border-color:var(--primary);
}
.btn-ghost:hover{background:var(--primary-soft);transform:translateY(-1px);}
.btn-dark{
  background:var(--dark);color:#fff;
}
.btn-dark:hover{background:#2A2044;transform:translateY(-1px);}
.btn-sm{height:42px;padding:0 20px;font-size:14px;}
.btn-lg{height:58px;padding:0 32px;font-size:16px;}
.btn-block{width:100%;}
.nav-toggle{
  display:none;
  width:46px;height:46px;border:1px solid var(--border);
  border-radius:14px;background:#fff;
  align-items:center;justify-content:center;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  display:block;width:20px;height:2px;border-radius:2px;background:var(--text);
  transition:transform .25s ease,opacity .2s ease;
}
.nav-toggle span{position:relative;}
.nav-toggle span::before{content:"";position:absolute;top:-6px;left:0;}
.nav-toggle span::after{content:"";position:absolute;top:6px;left:0;}
.nav-toggle.is-open span{background:transparent;}
.nav-toggle.is-open span::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span::after{transform:translateY(-6px) rotate(-45deg);}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(88vw,340px);
  background:#fff;border-left:1px solid var(--border);
  box-shadow:-20px 0 50px rgba(23,18,38,.18);
  transform:translateX(102%);
  transition:transform .3s ease;
  z-index:80;
  padding:26px 22px;
  display:flex;flex-direction:column;gap:8px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.drawer-title{font-weight:800;font-size:16px;}
.drawer-close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--border);
  background:#fff;font-size:20px;line-height:1;color:var(--muted);
}
.drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 16px;border-radius:14px;
  font-weight:600;color:var(--text);background:#FAF9FE;
  border:1px solid transparent;
}
.drawer a.drawer-link:hover{border-color:var(--primary-line-strong);color:var(--primary);}
.drawer-foot{margin-top:auto;display:grid;gap:10px;padding-top:18px;}
.overlay{
  position:fixed;inset:0;background:rgba(23,18,38,.42);
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;z-index:70;
}
.overlay.is-open{opacity:1;visibility:visible;}

/* ---------- article top ---------- */
.article-hero{
  position:relative;
  padding:46px 0 56px;
  background:
    linear-gradient(115deg,rgba(23,18,38,.94),rgba(52,36,122,.92) 58%,rgba(108,76,241,.88)),
    url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  color:#fff;
  overflow:hidden;
}
.article-hero::after{
  content:"";
  position:absolute;right:-120px;top:-90px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(24,199,182,.35),transparent 68%);
  pointer-events:none;
}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:rgba(255,255,255,.72);margin-bottom:22px;
}
.crumbs a{color:rgba(255,255,255,.86);}
.crumbs a:hover{color:var(--cyan);}
.crumbs span.sep{opacity:.5;}
.article-hero h1{
  font-size:clamp(2rem,4.6vw,3.4rem);
  line-height:1.16;
  font-weight:800;
  letter-spacing:-.015em;
  max-width:900px;
  margin-bottom:20px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:14px;color:rgba(255,255,255,.8);
}
.meta-chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.22);
  font-weight:600;
}
.meta-chip.accent{background:rgba(24,199,182,.2);border-color:rgba(24,199,182,.45);color:#C9FFF7;}
.article-lead{
  max-width:820px;
  margin-top:24px;
  font-size:17px;
  line-height:1.8;
  color:rgba(255,255,255,.82);
}

/* ---------- layout ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 330px;
  gap:48px;
  align-items:start;
  padding:72px 0 40px;
}
.article-main{
  background:var(--surface);
  border:1px solid var(--primary-line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-md);
  padding:44px clamp(22px,4vw,56px);
  max-width:820px;
  width:100%;
}
.article-body{font-size:17px;line-height:1.85;color:#2B2740;}
.article-body > * + *{margin-top:1.25em;}
.article-body h2{
  font-size:clamp(1.3rem,2.4vw,1.7rem);
  font-weight:800;line-height:1.3;
  color:var(--text);
  margin-top:2em;padding-left:16px;
  border-left:4px solid var(--primary);
}
.article-body h3{
  font-size:1.2rem;font-weight:700;line-height:1.4;
  color:var(--text);margin-top:1.8em;
}
.article-body p{color:#3A3550;}
.article-body strong{color:var(--text);font-weight:700;}
.article-body ul,.article-body ol{padding-left:0;display:grid;gap:10px;}
.article-body ul li,.article-body ol li{
  position:relative;padding-left:26px;color:#3A3550;
}
.article-body ul li::before{
  content:"";position:absolute;left:6px;top:12px;
  width:8px;height:8px;border-radius:3px;
  background:linear-gradient(135deg,var(--primary),var(--cyan));
}
.article-body ol{counter-reset:item;}
.article-body ol li{counter-increment:item;}
.article-body ol li::before{
  content:counter(item);
  position:absolute;left:0;top:4px;
  width:20px;height:20px;border-radius:7px;
  display:grid;place-items:center;
  background:var(--primary-soft);color:var(--primary);
  font-size:12px;font-weight:800;
}
.article-body blockquote{
  margin-top:1.6em;
  padding:20px 24px;
  border-radius:var(--radius-md);
  background:linear-gradient(120deg,rgba(108,76,241,.07),rgba(24,199,182,.08));
  border-left:4px solid var(--cyan);
  color:#332E52;font-weight:500;
}
.article-body img{
  border-radius:16px;
  box-shadow:var(--shadow-sm);
  margin-top:1.6em;
}
.article-body figure figcaption{
  font-size:13px;color:var(--muted);text-align:center;margin-top:10px;
}
.article-body table{
  width:100%;border-collapse:separate;border-spacing:0;
  border:1px solid var(--border);border-radius:16px;overflow:hidden;
  font-size:15px;
}
.article-body thead th{
  background:#F1EFFB;color:var(--text);font-weight:700;
  padding:14px 16px;text-align:left;
}
.article-body tbody td{
  padding:13px 16px;border-top:1px solid var(--border);color:#3A3550;
}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(108,76,241,.35);}
.article-body a:hover{color:var(--primary-deep);border-color:var(--primary-deep);}
.empty-state{
  text-align:center;
  padding:64px 24px;
  border:1px dashed var(--border);
  border-radius:var(--radius-md);
  background:#FAF9FE;
  display:grid;gap:14px;justify-items:center;
}
.empty-state .empty-icon{
  width:58px;height:58px;border-radius:18px;
  display:grid;place-items:center;
  background:var(--primary-soft);color:var(--primary);
  font-size:24px;font-weight:800;
}
.empty-state h2{font-size:1.25rem;font-weight:800;}
.empty-state p{color:var(--muted);font-size:15px;max-width:420px;}

/* ---------- sidebar ---------- */
.side-col{display:grid;gap:22px;position:sticky;top:100px;}
.side-card{
  background:var(--surface);
  border:1px solid var(--primary-line);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-sm);
  padding:24px;
}
.side-card h3{font-size:1.05rem;font-weight:800;margin-bottom:10px;}
.side-card p{color:var(--muted);font-size:14.5px;}
.side-card-dark{
  background:
    linear-gradient(150deg,var(--dark),#2A1E56 70%),
    url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  color:#EFEBFF;
  border-color:transparent;
  box-shadow:var(--shadow-lg);
}
.side-card-dark h3{color:#fff;}
.side-card-dark p{color:rgba(239,235,255,.78);}
.side-card-dark .side-actions{margin-top:16px;display:grid;gap:10px;}
.side-list{display:grid;gap:10px;margin-top:12px;}
.side-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.5px;color:var(--muted);
}
.side-list li b{color:var(--text);}
.dot{
  width:8px;height:8px;border-radius:3px;flex-shrink:0;margin-top:8px;
  background:linear-gradient(135deg,var(--primary),var(--cyan));
}
.side-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:11px 14px;border-radius:12px;
  font-size:14.5px;font-weight:600;color:var(--muted);
  border:1px solid transparent;background:#FAF9FE;
}
.side-nav a + a{margin-top:8px;}
.side-nav a:hover{color:var(--primary);border-color:var(--primary-line-strong);}
.side-nav a span.arrow{color:var(--primary);}

/* ---------- related ---------- */
.related{padding:24px 0 8px;}
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.card{
  background:var(--surface);
  border:1px solid var(--primary-line);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-sm);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--primary-line-strong);}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-badge{
  position:absolute;left:14px;top:14px;
  padding:5px 12px;border-radius:999px;
  background:rgba(23,18,38,.78);color:#fff;
  font-size:12px;font-weight:700;letter-spacing:.02em;
  backdrop-filter:blur(6px);
}
.card-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:1.05rem;font-weight:700;line-height:1.45;}
.card-body p{font-size:14.5px;color:var(--muted);}
.card-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.card-meta .go{color:var(--primary);font-weight:700;}

/* ---------- cta ---------- */
.cta-band{
  margin:72px 0 0;
  border-radius:28px;
  padding:clamp(32px,5vw,60px);
  background:
    linear-gradient(120deg,rgba(23,18,38,.95),rgba(43,29,102,.92)),
    url("/assets/images/backpic/back-3.png") center/cover no-repeat;
  color:#fff;
  display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  gap:36px;align-items:center;
}
.cta-band h2{
  font-size:clamp(1.5rem,3vw,2.2rem);
  line-height:1.25;font-weight:800;margin-bottom:14px;
}
.cta-band p{color:rgba(255,255,255,.78);font-size:16px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:24px;}
.cta-panel{
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.18);
  border-radius:20px;
  padding:22px;
}
.cta-panel h3{font-size:1rem;font-weight:800;margin-bottom:12px;}
.cta-panel ul{display:grid;gap:10px;}
.cta-panel li{display:flex;gap:10px;font-size:14.5px;color:rgba(255,255,255,.82);}
.tick{
  width:18px;height:18px;border-radius:6px;flex-shrink:0;margin-top:5px;
  display:grid;place-items:center;
  background:rgba(24,199,182,.22);color:var(--cyan);
  font-size:11px;font-weight:900;
}
.back-row{
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;
  margin-top:26px;
}
.back-row .hint{font-size:14px;color:var(--muted);}

/* ---------- footer ---------- */
.site-footer{
  margin-top:96px;
  background:var(--dark);
  color:#CFCADF;
  padding:64px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
}
.footer-brand{
  display:flex;align-items:center;gap:12px;
  font-weight:800;font-size:16px;color:#fff;
  margin-bottom:14px;
}
.site-footer p{font-size:14.5px;line-height:1.8;color:#B9B3CD;}
.footer-title{
  font-size:14px;font-weight:800;color:#fff;
  margin-bottom:16px;letter-spacing:.04em;
}
.footer-list{display:grid;gap:10px;}
.footer-list a{font-size:14.5px;color:#CFCADF;}
.footer-list a:hover{color:var(--cyan);}
.footer-bottom{
  margin-top:44px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:#9E98B6;
}
.footer-bottom a{color:#CFCADF;}
.footer-bottom a:hover{color:var(--cyan);}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px;}
  .side-col{position:static;grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:1024px){
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  :root{--gap-section:76px;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .nav-wrap{height:70px;}
  .brand-text{font-size:15.5px;}
  .article-layout{padding:48px 0 24px;}
  .article-main{padding:26px 20px;border-radius:20px;}
  .side-col{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-band{border-radius:22px;padding:30px 22px;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .brand-text{font-size:14.5px;}
  .article-hero{padding:34px 0 42px;}
  .article-hero h1{font-size:1.75rem;}
  .btn{width:100%;}
  .nav-cta .btn,.cta-actions .btn{width:100%;}
  .cta-actions{flex-direction:column;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}

/* roulang page: category1 */
:root{
  --brand:#6C4CF1;
  --brand-dark:#4B2FD6;
  --cyan:#18C7B6;
  --amber:#F6B73C;
  --ok:#1FA97A;
  --warn:#D9485F;
  --bg:#F6F5FA;
  --surface:#FFFFFF;
  --ink:#1D1A2B;
  --muted:#5E5A70;
  --line:#E4E1F0;
  --dark:#171226;
  --radius-lg:24px;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 12px 30px rgba(23,18,38,.08);
  --shadow-lg:0 22px 48px rgba(23,18,38,.14);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
img{max-width:100%;display:block;}
button,input,textarea,select{font:inherit;color:inherit;}
:focus-visible{outline:3px solid rgba(24,199,182,.45);outline-offset:2px;border-radius:8px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section-alt{background:#FFFFFF;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 26px rgba(23,18,38,.08);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:76px;}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:17px;letter-spacing:-.01em;color:var(--ink);}
.brand:hover{color:var(--brand);}
.brand-mark{
  width:38px;height:38px;border-radius:13px;flex:none;
  background:linear-gradient(135deg,#6C4CF1 0%,#4B2FD6 100%);
  color:#fff;display:grid;place-items:center;font-size:14px;font-weight:800;letter-spacing:-.03em;
  box-shadow:0 8px 18px rgba(108,76,241,.3);
}
.brand-text{white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;padding:10px 15px;border-radius:999px;
  font-size:15px;font-weight:600;color:var(--muted);
  transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:4px;width:0;height:2px;border-radius:2px;
  background:var(--brand);transform:translateX(-50%);transition:width .22s ease;
}
.nav-link:hover{color:var(--brand);background:rgba(108,76,241,.08);}
.nav-link:hover::after{width:18px;}
.nav-link.is-active{color:var(--brand);background:rgba(108,76,241,.1);}
.nav-link.is-active::after{width:18px;}
.nav-cta{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:13px;border:1px solid var(--line);
  background:#fff;align-items:center;justify-content:center;cursor:pointer;
  transition:border-color .2s ease,background .2s ease;
}
.nav-toggle:hover{border-color:rgba(108,76,241,.4);background:rgba(108,76,241,.06);}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;transition:background .2s ease;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);transition:transform .2s ease,top .2s ease;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.site-header.nav-open .nav-toggle span{background:transparent;}
.site-header.nav-open .nav-toggle span::before{top:0;transform:rotate(45deg);}
.site-header.nav-open .nav-toggle span::after{top:0;transform:rotate(-45deg);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px rgba(108,76,241,.28);}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 16px 30px rgba(75,47,214,.32);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(75,47,214,.3);}
.btn-ghost{background:#fff;color:var(--brand);border-color:rgba(108,76,241,.45);}
.btn-ghost:hover{background:rgba(108,76,241,.08);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);background:rgba(108,76,241,.14);}
.btn-light{background:#fff;color:var(--dark);}
.btn-light:hover{transform:translateY(-1px);box-shadow:0 16px 30px rgba(0,0,0,.28);}
.btn-sm{height:42px;padding:0 18px;font-size:14px;}
.btn-lg{height:58px;padding:0 32px;font-size:16px;}
.btn-block{width:100%;}

/* 通用文字与标签 */
.h1{font-size:clamp(2.25rem,5.2vw,4rem);font-weight:800;line-height:1.12;letter-spacing:-.025em;}
.h2{font-size:clamp(1.5rem,3.2vw,2.5rem);font-weight:800;line-height:1.2;letter-spacing:-.015em;}
.h3{font-size:1.25rem;font-weight:700;line-height:1.35;}
.lead{font-size:clamp(1rem,1.3vw,1.125rem);line-height:1.8;color:var(--muted);}
.muted{color:var(--muted);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;
  font-size:13px;font-weight:700;letter-spacing:.02em;
  background:rgba(108,76,241,.1);color:var(--brand);
}
.badge-cyan{background:rgba(24,199,182,.14);color:#0E8C7F;}
.badge-amber{background:rgba(246,183,60,.18);color:#9A6A05;}
.badge-ok{background:rgba(31,169,122,.14);color:#158260;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  color:var(--brand);
}
.eyebrow::before{content:"";width:26px;height:2px;border-radius:2px;background:var(--brand);}

/* 分类页 Hero */
.cat-hero{
  position:relative;overflow:hidden;
  padding:68px 0 76px;
  background:linear-gradient(180deg,#FFFFFF 0%,#F6F5FA 100%);
  border-bottom:1px solid var(--line);
}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center right;
  opacity:.16;
}
.cat-hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(246,245,250,.97) 0%,rgba(246,245,250,.82) 52%,rgba(246,245,250,.9) 100%);
}
.cat-hero .container{position:relative;z-index:2;}
.crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:22px;flex-wrap:wrap;}
.crumb a:hover{color:var(--brand);}
.crumb span.sep{color:#BEB9CE;}
.cat-hero h1{max-width:20ch;margin:14px 0 18px;}
.hero-lead{max-width:62ch;font-size:clamp(1rem,1.35vw,1.15rem);line-height:1.85;color:var(--muted);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.stat-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px;}
.stat-item{
  flex:1 1 200px;background:#fff;border:1px solid rgba(108,76,241,.12);
  border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow);
}
.stat-num{font-size:1.6rem;font-weight:800;color:var(--brand);line-height:1.2;letter-spacing:-.02em;}
.stat-label{font-size:14px;color:var(--muted);margin-top:4px;}

/* 权益矩阵 */
.matrix-intro{display:grid;grid-template-columns:1.4fr 1fr;gap:36px;align-items:end;margin-bottom:36px;}
.matrix-note{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 20px;font-size:14.5px;color:var(--muted);box-shadow:var(--shadow);
  border-left:3px solid var(--amber);
}
.matrix-wrap{
  overflow-x:auto;-webkit-overflow-scrolling:touch;
  background:#fff;border:1px solid var(--line);
  border-radius:22px;box-shadow:var(--shadow);
}
.matrix{width:100%;min-width:820px;border-collapse:collapse;}
.matrix th,.matrix td{padding:16px 18px;text-align:left;font-size:15px;border-bottom:1px solid var(--line);}
.matrix thead th{background:#FBFAFF;vertical-align:top;padding:22px 18px;}
.matrix tbody th{font-weight:700;color:var(--ink);background:#fff;font-size:15.5px;}
.matrix tbody td{color:var(--muted);}
.matrix tbody tr:hover th,.matrix tbody tr:hover td{background:#FCFBFF;}
.matrix th:first-child,.matrix td:first-child{
  position:sticky;left:0;z-index:3;
  box-shadow:1px 0 0 var(--line);
  min-width:160px;
}
.matrix thead th:first-child{background:#FBFAFF;}
.matrix tbody th:first-child{background:#fff;}
.matrix tfoot td{border-bottom:0;padding:18px;background:#FBFAFF;}
.matrix tfoot td:first-child{background:#FBFAFF;font-weight:700;color:var(--muted);font-size:14px;}
.matrix .is-featured{background:rgba(108,76,241,.07);}
.matrix tbody tr:hover .is-featured{background:rgba(108,76,241,.11);}
.matrix thead .is-featured{background:rgba(108,76,241,.12);}
.matrix tfoot .is-featured{background:rgba(108,76,241,.12);}
.tier-head{display:flex;flex-direction:column;gap:6px;}
.tier-name{font-size:1.35rem;font-weight:800;letter-spacing:-.01em;color:var(--ink);}
.tier-meta{font-size:13.5px;font-weight:500;color:var(--muted);line-height:1.6;}
.tier-price{font-size:13.5px;color:var(--brand);font-weight:700;margin-top:4px;}
.cell-yes{color:var(--ok);font-weight:700;}
.cell-no{color:#B4AFC6;}

/* 等级亮点 */
.level-figure{margin-top:32px;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);border:1px solid rgba(108,76,241,.12);}
.level-figure img{width:100%;height:230px;object-fit:cover;}
.level-stack{display:flex;flex-direction:column;gap:20px;}
.level-card{
  position:relative;background:#fff;border:1px solid rgba(108,76,241,.12);
  border-radius:var(--radius-lg);padding:26px 26px 24px;
  box-shadow:var(--shadow);overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.level-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--brand);}
.level-card.tier-cyan::before{background:linear-gradient(90deg,#18C7B6,#6C4CF1);}
.level-card.tier-amber::before{background:linear-gradient(90deg,#F6B73C,#6C4CF1);}
.level-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(108,76,241,.3);}
.level-card:nth-child(2){margin-left:34px;}
.level-card:nth-child(3){margin-left:68px;}
.level-top{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.level-name{font-size:1.3rem;font-weight:800;letter-spacing:-.01em;}
.level-list{margin-top:18px;display:grid;gap:10px;}
.level-list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--muted);}
.level-list li i{color:var(--cyan);margin-top:5px;font-size:13px;}
.level-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:22px;padding-top:18px;border-top:1px dashed var(--line);flex-wrap:wrap;}
.level-link{font-weight:700;color:var(--brand);font-size:15px;}
.level-link:hover{color:var(--brand-dark);}
.level-link i{font-size:12px;margin-left:4px;transition:transform .2s ease;}
.level-link:hover i{transform:translateX(3px);}

/* 使用场景 */
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.scene-media{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);border:1px solid rgba(108,76,241,.12);}
.scene-media img{width:100%;height:390px;object-fit:cover;}
.scene-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(23,18,38,0) 45%,rgba(23,18,38,.55) 100%);}
.scene-caption{position:absolute;left:22px;right:22px;bottom:20px;z-index:2;color:#fff;font-size:14px;line-height:1.6;}
.scene-list{display:grid;gap:16px;margin-top:28px;}
.scene-item{
  display:flex;gap:18px;background:#fff;border:1px solid rgba(108,76,241,.12);
  border-radius:var(--radius);padding:20px 22px;box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.scene-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(108,76,241,.3);}
.scene-idx{
  flex:none;width:42px;height:42px;border-radius:14px;display:grid;place-items:center;
  background:rgba(108,76,241,.1);color:var(--brand);font-weight:800;font-size:15px;
}
.scene-item h3{font-size:1.0625rem;font-weight:700;margin-bottom:5px;}
.scene-item p{font-size:14.5px;color:var(--muted);line-height:1.75;}

/* FAQ */
.faq-list{display:grid;gap:14px;max-width:940px;margin:38px auto 0;}
.faq-item{
  background:#fff;border:1px solid rgba(108,76,241,.14);
  border-radius:14px;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(108,76,241,.32);}
.faq-item.open{border-left:3px solid var(--brand);box-shadow:var(--shadow);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:19px 22px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:700;color:var(--ink);line-height:1.5;
}
.faq-q i{flex:none;color:var(--brand);font-size:14px;transition:transform .25s ease;}
.faq-item.open .faq-q i{transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .28s ease;
  padding:0 22px;font-size:15.5px;color:var(--muted);line-height:1.8;
}
.faq-item.open .faq-a{max-height:340px;padding-bottom:22px;}

/* CTA */
.cta-band{background:var(--dark);color:#fff;position:relative;overflow:hidden;}
.cta-band::before{
  content:"";position:absolute;right:-140px;top:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,76,241,.55) 0%,rgba(108,76,241,0) 70%);
}
.cta-band::after{
  content:"";position:absolute;left:-120px;bottom:-160px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(24,199,182,.35) 0%,rgba(24,199,182,0) 70%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;}
.cta-band h2{color:#fff;font-size:clamp(1.6rem,3vw,2.4rem);font-weight:800;line-height:1.22;letter-spacing:-.015em;}
.cta-band p{color:#CFCADF;font-size:1.03rem;line-height:1.85;margin-top:16px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.cta-form{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-lg);padding:28px;
  backdrop-filter:blur(6px);
}
.cta-form .form-row{display:grid;gap:14px;}
.cta-form label{display:block;font-size:14px;font-weight:700;color:#CFCADF;margin-bottom:7px;}
.cta-form input[type="text"],.cta-form input[type="tel"],.cta-form textarea{
  width:100%;height:48px;border-radius:12px;
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.07);color:#fff;padding:0 15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.cta-form textarea{height:92px;padding:12px 15px;resize:vertical;line-height:1.7;}
.cta-form input::placeholder,.cta-form textarea::placeholder{color:#8E88A8;}
.cta-form input:focus,.cta-form textarea:focus{
  outline:none;border-color:rgba(108,76,241,.8);box-shadow:0 0 0 3px rgba(108,76,241,.3);
}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:#CFCADF;margin:4px 0 18px;}
.check-row input{width:18px;height:18px;margin-top:4px;accent-color:var(--brand);}
.form-tip{display:none;margin-top:14px;font-size:14px;color:#7FE3D6;}

/* 页脚 */
.site-footer{background:var(--dark);color:#CFCADF;padding:72px 0 30px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:17px;color:#fff;margin-bottom:16px;}
.footer-brand .brand-mark{box-shadow:none;}
.site-footer p{font-size:14.5px;line-height:1.85;color:#A9A3C0;max-width:36ch;}
.footer-title{font-size:15px;font-weight:800;color:#fff;margin-bottom:16px;}
.footer-list{display:grid;gap:10px;font-size:14.5px;}
.footer-list a:hover{color:var(--cyan);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:#8E88A8;
}
.footer-bottom a{color:#B8B2D0;}
.footer-bottom a:hover{color:var(--cyan);}

/* 响应式 */
@media (max-width:1024px){
  .section{padding:76px 0;}
  .matrix-intro{grid-template-columns:1fr;gap:22px;}
  .scene-grid{grid-template-columns:1fr;gap:34px;}
  .scene-media img{height:320px;}
  .cta-inner{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:959px){
  .nav-links{
    position:fixed;top:76px;right:0;width:min(320px,88vw);height:calc(100vh - 76px);
    background:#fff;border-left:1px solid var(--line);
    box-shadow:-16px 0 40px rgba(23,18,38,.12);
    flex-direction:column;align-items:stretch;gap:6px;
    padding:22px 16px 120px;overflow-y:auto;
    transform:translateX(110%);transition:transform .3s ease;z-index:70;
  }
  .nav-links .nav-link{padding:14px 16px;border-radius:14px;font-size:16px;}
  .nav-links .nav-link::after{display:none;}
  .nav-cta{
    position:fixed;right:16px;bottom:22px;width:calc(min(320px,88vw) - 32px);
    flex-direction:column;z-index:71;
    transform:translateX(110%);opacity:0;pointer-events:none;
    transition:transform .3s ease,opacity .3s ease;
  }
  .nav-cta .btn{width:100%;}
  .site-header.nav-open .nav-links,
  .site-header.nav-open .nav-cta{transform:translateX(0);opacity:1;pointer-events:auto;}
  .nav-toggle{display:flex;}
  .level-card:nth-child(2),.level-card:nth-child(3){margin-left:0;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .cat-hero{padding:48px 0 56px;}
  .cat-hero h1{max-width:none;}
  .brand{font-size:15px;}
  .brand-text{white-space:normal;line-height:1.25;}
  .hero-actions .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .scene-media img{height:250px;}
  .level-card{padding:22px 20px;}
  .stat-item{flex:1 1 100%;}
  .matrix th,.matrix td{padding:14px 14px;}
}

/* roulang page: category2 */
:root{
  --primary:#6C4CF1;
  --primary-deep:#4B2FD6;
  --teal:#18C7B6;
  --amber:#F6B73C;
  --success:#1FA97A;
  --danger:#D9485F;
  --bg:#F6F5FA;
  --card:#FFFFFF;
  --dark:#171226;
  --ink:#1D1A2B;
  --ink-soft:#5E5A70;
  --line:#E4E1F0;
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:14px;
  --radius-xs:12px;
  --shadow-sm:0 6px 18px rgba(23,18,38,.06);
  --shadow:0 12px 30px rgba(23,18,38,.08);
  --shadow-lg:0 22px 48px rgba(23,18,38,.14);
  --container:1240px;
  --gap-section:104px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
a:hover{color:var(--primary);}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:3px solid rgba(24,199,182,.45);
  outline-offset:2px;
  border-radius:6px;
}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;font-weight:800;color:var(--ink);letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:28px;
  padding-right:28px;
}
.section{padding:var(--gap-section) 0;}
.section-tight{padding:72px 0;}
.section-dark{
  background:var(--dark);
  color:#EFECF9;
}
.section-dark h2,.section-dark h3{color:#fff;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--primary);
  background:rgba(108,76,241,.1);
  border:1px solid rgba(108,76,241,.18);
  padding:6px 14px;border-radius:999px;
  text-transform:uppercase;
}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{
  font-size:clamp(1.5rem,3.2vw,2.5rem);
  line-height:1.2;
  margin:16px 0 14px;
}
.section-head p{color:var(--ink-soft);font-size:17px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 26px rgba(23,18,38,.09);}
.nav-wrap{
  display:flex;align-items:center;gap:26px;
  min-height:76px;
}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#fff;font-size:15px;font-weight:800;letter-spacing:-.03em;
  box-shadow:0 8px 18px rgba(108,76,241,.32);
}
.brand-text{font-size:17px;font-weight:800;color:var(--ink);white-space:nowrap;}
.brand:hover .brand-text{color:var(--primary-deep);}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;
  padding:9px 15px;border-radius:999px;
  font-size:15.5px;font-weight:600;color:var(--ink-soft);
  transition:background-color .2s ease,color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:15px;right:15px;bottom:4px;height:2px;
  background:var(--primary);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.nav-link:hover{color:var(--primary-deep);background:rgba(108,76,241,.07);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--primary-deep);background:rgba(108,76,241,.1);}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-cta{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  background:#fff;border-radius:12px;position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--ink);
  border-radius:2px;transform:translateX(-50%);transition:.25s ease;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}
.nav-toggle.is-open span{background:transparent;}
.nav-toggle.is-open span::before{top:0;transform:rotate(45deg);}
.nav-toggle.is-open span::after{top:0;transform:rotate(-45deg);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border-radius:999px;
  font-size:16px;font-weight:700;border:1px solid transparent;
  transition:transform .18s ease,box-shadow .22s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-sm{height:42px;padding:0 20px;font-size:15px;}
.btn-lg{height:58px;padding:0 34px;font-size:17px;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 22px rgba(108,76,241,.28);}
.btn-primary:hover{background:var(--primary-deep);color:#fff;transform:translateY(-1px);box-shadow:0 14px 30px rgba(75,47,214,.34);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(75,47,214,.3);}
.btn-ghost{background:#fff;border-color:rgba(108,76,241,.4);color:var(--primary-deep);}
.btn-ghost:hover{background:rgba(108,76,241,.08);color:var(--primary-deep);border-color:var(--primary);transform:translateY(-1px);}
.btn-teal{background:var(--teal);color:#08201d;}
.btn-teal:hover{background:#12b3a4;color:#08201d;transform:translateY(-1px);}
.btn-block{width:100%;}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  padding:74px 0 68px;
  background:
    linear-gradient(115deg,rgba(246,245,250,.96) 0%,rgba(246,245,250,.86) 42%,rgba(23,18,38,.82) 100%),
    url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:auto -120px -160px auto;width:420px;height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(108,76,241,.28),rgba(108,76,241,0) 68%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:880px;}
.crumbs{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink-soft);margin-bottom:22px;}
.crumbs a{color:var(--ink-soft);}
.crumbs a:hover{color:var(--primary);}
.crumbs span.sep{color:#B7B2C8;}
.page-hero h1{
  font-size:clamp(2rem,5vw,3.55rem);
  line-height:1.14;font-weight:800;letter-spacing:-.02em;
  margin-bottom:20px;
}
.page-hero h1 em{
  font-style:normal;
  background:linear-gradient(120deg,var(--primary),var(--primary-deep));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.page-hero .lead{
  font-size:18px;color:var(--ink-soft);max-width:720px;margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:9px 18px;font-size:14.5px;font-weight:600;color:var(--ink-soft);
  box-shadow:var(--shadow-sm);
}
.pill i{width:9px;height:9px;border-radius:50%;background:var(--teal);display:inline-block;}
.pill.is-amber i{background:var(--amber);}
.pill.is-purple i{background:var(--primary);}

/* ---------- prep grid ---------- */
.prep-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.prep-card{
  background:var(--card);border:1px solid rgba(108,76,241,.12);
  border-radius:var(--radius-md);padding:28px 26px;
  box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.prep-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(108,76,241,.3);}
.prep-icon{
  width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:rgba(108,76,241,.1);color:var(--primary-deep);font-weight:800;font-size:16px;margin-bottom:18px;
}
.prep-card h3{font-size:1.125rem;margin-bottom:10px;}
.prep-card p{color:var(--ink-soft);font-size:15.5px;}

/* ---------- timeline ---------- */
.timeline{position:relative;max-width:1000px;margin:0 auto;}
.timeline::before{
  content:"";position:absolute;left:31px;top:14px;bottom:14px;width:2px;
  background:linear-gradient(180deg,rgba(108,76,241,.55),rgba(24,199,182,.45),rgba(246,183,60,.35));
  border-radius:2px;
}
.step{position:relative;padding-left:92px;margin-bottom:30px;}
.step:last-child{margin-bottom:0;}
.step-num{
  position:absolute;left:0;top:6px;
  width:64px;height:64px;border-radius:20px;
  display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:800;color:#fff;
  background:linear-gradient(140deg,var(--primary),var(--primary-deep));
  box-shadow:0 12px 26px rgba(108,76,241,.3);
  border:4px solid var(--bg);
}
.step:nth-child(2n) .step-num{background:linear-gradient(140deg,#23d0bf,#12a99b);color:#05221f;box-shadow:0 12px 26px rgba(24,199,182,.3);}
.step:nth-child(3n) .step-num{background:linear-gradient(140deg,#f9c65c,#e0a01f);color:#3a2604;box-shadow:0 12px 26px rgba(246,183,60,.32);}
.step-card{
  background:var(--card);border:1px solid rgba(108,76,241,.12);
  border-radius:var(--radius-md);padding:26px 28px;
  box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(108,76,241,.3);}
.step-card h3{font-size:1.2rem;margin-bottom:10px;}
.step-card p{color:var(--ink-soft);font-size:16px;}
.step-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:700;padding:5px 12px;border-radius:999px;
  background:rgba(108,76,241,.09);color:var(--primary-deep);
}
.tag.tag-teal{background:rgba(24,199,182,.14);color:#0C7A70;}
.tag.tag-amber{background:rgba(246,183,60,.18);color:#8B5E05;}
.tag.tag-danger{background:rgba(217,72,95,.12);color:#A82338;}

/* ---------- security ---------- */
.security-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:26px;align-items:start;}
.sec-main{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-lg);padding:34px 32px;
}
.sec-main h3{font-size:1.4rem;margin-bottom:14px;}
.sec-main p{color:#CFCADF;font-size:16.5px;}
.sec-list{margin-top:22px;display:grid;gap:14px;}
.sec-list li{display:flex;gap:12px;align-items:flex-start;color:#E4E0F2;font-size:16px;}
.sec-dot{
  flex-shrink:0;width:24px;height:24px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(24,199,182,.2);color:var(--teal);font-size:13px;font-weight:800;margin-top:3px;
}
.sec-side{display:grid;gap:18px;}
.sec-card{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-md);padding:24px;
}
.sec-card.warn{border-color:rgba(217,72,95,.45);background:rgba(217,72,95,.12);}
.sec-card h4{font-size:1.05rem;margin-bottom:8px;}
.sec-card p{color:#CFCADF;font-size:15px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:940px;margin:0 auto;display:grid;gap:14px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.is-open{border-color:rgba(108,76,241,.4);box-shadow:var(--shadow-sm);border-left:3px solid var(--primary);}
.faq-q{
  width:100%;background:none;border:0;text-align:left;
  padding:20px 24px;font-size:17px;font-weight:700;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-q:hover{color:var(--primary-deep);}
.faq-q .chev{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  background:rgba(108,76,241,.1);color:var(--primary-deep);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:800;transition:transform .22s ease,background-color .22s ease;
}
.faq-item.is-open .chev{transform:rotate(45deg);background:var(--primary);color:#fff;}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .25s ease;
}
.faq-a p{padding:0 24px 22px;color:var(--ink-soft);font-size:16px;}

/* ---------- content preview ---------- */
.preview-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.preview-card{
  background:#fff;border:1px solid rgba(108,76,241,.12);border-radius:var(--radius-md);
  overflow:hidden;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.preview-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(108,76,241,.3);}
.preview-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#EDEAF7;}
.preview-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.preview-card:hover .preview-thumb img{transform:scale(1.04);}
.preview-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.preview-body h3{font-size:1.1rem;line-height:1.45;}
.preview-body p{color:var(--ink-soft);font-size:15.5px;}
.preview-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:14px;border-top:1px dashed var(--line);font-size:13.5px;color:#807B93;}
.badge-float{
  position:absolute;left:14px;top:14px;
  background:rgba(23,18,38,.82);color:#fff;
  font-size:12.5px;font-weight:700;padding:6px 13px;border-radius:999px;
  backdrop-filter:blur(6px);
}

/* ---------- CTA ---------- */
.cta-shell{
  border-radius:28px;padding:56px 46px;
  background:
    radial-gradient(900px 380px at 12% 0%,rgba(108,76,241,.42),rgba(108,76,241,0) 62%),
    radial-gradient(700px 340px at 92% 100%,rgba(24,199,182,.28),rgba(24,199,182,0) 60%),
    var(--dark);
  border:1px solid rgba(255,255,255,.1);
  display:grid;grid-template-columns:1.05fr 1fr;gap:44px;align-items:center;
}
.cta-shell h2{font-size:clamp(1.6rem,3vw,2.35rem);line-height:1.22;color:#fff;margin-bottom:16px;}
.cta-shell p{color:#CFCADF;font-size:16.5px;margin-bottom:26px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.form-card{
  background:#fff;border-radius:var(--radius-lg);padding:30px 28px;
  box-shadow:var(--shadow-lg);
}
.form-card h3{font-size:1.2rem;margin-bottom:6px;}
.form-card .form-hint{font-size:14px;color:var(--ink-soft);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:700;margin-bottom:8px;color:var(--ink);}
.field input,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--radius-xs);
  padding:13px 16px;font-size:16px;font-family:inherit;color:var(--ink);
  background:#FCFBFE;transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:96px;resize:vertical;line-height:1.6;}
.field input:focus,.field textarea:focus{
  border-color:var(--primary);outline:none;
  box-shadow:0 0 0 3px rgba(108,76,241,.2);
}
.check-row{display:flex;gap:10px;align-items:flex-start;margin:6px 0 20px;font-size:14px;color:var(--ink-soft);}
.check-row input{width:18px;height:18px;margin-top:3px;accent-color:var(--primary);flex-shrink:0;}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:#CFCADF;padding:70px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:38px;}
.footer-brand{display:flex;align-items:center;gap:12px;font-size:17px;font-weight:800;color:#fff;margin-bottom:16px;}
.footer-title{font-size:15px;font-weight:800;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-list{display:grid;gap:11px;}
.footer-list a{color:#CFCADF;font-size:15px;}
.footer-list a:hover{color:var(--teal);}
.site-footer p{color:#CFCADF;font-size:15px;line-height:1.8;}
.footer-bottom{
  margin-top:46px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:#9C96B4;
}
.footer-bottom a{color:#9C96B4;}
.footer-bottom a:hover{color:var(--teal);}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  :root{--gap-section:84px;}
  .prep-grid{grid-template-columns:repeat(2,1fr);}
  .preview-grid{grid-template-columns:repeat(2,1fr);}
  .security-grid{grid-template-columns:1fr;}
  .cta-shell{grid-template-columns:1fr;padding:44px 32px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:30px;}
}
@media (max-width:900px){
  .nav-links{
    position:fixed;top:76px;right:0;height:calc(100vh - 76px);width:290px;
    flex-direction:column;align-items:stretch;gap:8px;
    background:#fff;border-left:1px solid var(--line);
    padding:26px 22px;box-shadow:-18px 0 40px rgba(23,18,38,.12);
    transform:translateX(105%);transition:transform .28s ease;
    margin-left:0;overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0);}
  .nav-link{padding:13px 16px;border-radius:14px;font-size:16px;}
  .nav-link::after{display:none;}
  .nav-cta .btn-ghost{display:none;}
  .nav-toggle{display:block;}
  .brand-text{font-size:15.5px;white-space:normal;}
  .brand{align-items:center;}
}
@media (max-width:768px){
  :root{--gap-section:62px;}
  body{font-size:16px;}
  .container{padding-left:20px;padding-right:20px;}
  .page-hero{padding:52px 0 48px;}
  .page-hero .lead{font-size:16.5px;}
  .section-head{margin-bottom:32px;}
  .prep-grid{grid-template-columns:1fr;}
  .preview-grid{grid-template-columns:1fr;}
  .timeline::before{left:21px;}
  .step{padding-left:66px;margin-bottom:22px;}
  .step-num{width:44px;height:44px;border-radius:14px;font-size:16px;border-width:3px;}
  .step-card{padding:22px 20px;}
  .step-card h3{font-size:1.08rem;}
  .faq-q{padding:17px 18px;font-size:16px;}
  .faq-a p{padding:0 18px 18px;font-size:15.5px;}
  .cta-shell{padding:34px 22px;border-radius:22px;}
  .form-card{padding:24px 20px;}
  .hero-actions .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .sec-main{padding:26px 22px;}
}
@media (max-width:520px){
  .brand-text{font-size:14.5px;max-width:150px;line-height:1.25;}
  .brand-mark{width:36px;height:36px;font-size:13px;border-radius:10px;}
  .nav-wrap{min-height:68px;gap:14px;}
  .nav-links{top:68px;width:86%;height:calc(100vh - 68px);}
  .page-hero h1{font-size:clamp(1.75rem,7.5vw,2.3rem);}
  .footer-grid{grid-template-columns:1fr;}
  .pill{font-size:13.5px;padding:8px 14px;}
}