/* roulang page: index */
:root{
  --brand-600:#6C3BFF;
  --brand-700:#5222D9;
  --brand-050:#F1ECFF;
  --accent:#17E0C2;
  --hot:#FF6B3D;
  --ink-900:#14102B;
  --ink-600:#4A4468;
  --ink-400:#8B85A6;
  --bg:#F8F7FC;
  --card:#FFFFFF;
  --line:#E9E6F5;
  --dark:#14102B;
  --dark-2:#241B4A;
  --radius-sm:12px;
  --radius-md:16px;
  --radius-lg:24px;
  --radius-xl:32px;
  --shadow-card:0 1px 2px rgba(20,16,43,.04), 0 12px 32px rgba(108,59,255,.08);
  --shadow-hover:0 4px 10px rgba(20,16,43,.06), 0 20px 44px rgba(108,59,255,.16);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding-top:72px;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  background:var(--bg);
  color:var(--ink-900);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;border-radius:8px;
}
::selection{background:var(--brand-050);color:var(--brand-700);}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:var(--bg);}
::-webkit-scrollbar-thumb{background:#D9D3EE;border-radius:999px;border:2px solid var(--bg);}
::-webkit-scrollbar-thumb:hover{background:var(--brand-600);}

.container-x{width:100%;max-width:var(--container);margin:0 auto;padding-left:20px;padding-right:20px;}
@media (min-width:1024px){.container-x{padding-left:40px;padding-right:40px;}}

.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand-600);color:#fff;padding:10px 16px;border-radius:0 0 12px 0;z-index:200;}
.skip-link:focus{left:0;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(248,247,252,.72);
  backdrop-filter:blur(10px);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  box-shadow:0 1px 0 var(--line),0 10px 26px rgba(20,16,43,.07);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:72px;transition:height .25s ease;}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand-600),var(--accent));
  color:#fff;font-weight:800;font-size:14px;letter-spacing:.02em;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(108,59,255,.28);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.desktop-nav{display:none;align-items:center;gap:4px;}
@media (min-width:1024px){.desktop-nav{display:flex;}}
.nav-link{
  display:inline-block;padding:8px 14px;border-radius:999px;
  font-size:15px;color:var(--ink-600);
  transition:background .2s ease,color .2s ease;
}
.nav-link:hover{background:var(--brand-050);color:var(--brand-700);}
.nav-link.is-active{background:var(--brand-050);color:var(--brand-700);font-weight:600;}
.header-cta{height:42px;padding:0 18px;font-size:14px;}
@media (max-width:1023px){.header-cta{display:none;}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{
  background:var(--brand-600);color:#fff;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.3),0 8px 20px rgba(108,59,255,.24);
}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:inset 0 1px 0 rgba(255,255,255,.3),0 12px 26px rgba(108,59,255,.3);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink-900);}
.btn-ghost:hover{background:var(--brand-050);border-color:var(--brand-600);color:var(--brand-700);}
.btn-sm{height:42px;padding:0 18px;font-size:14px;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-600);font-weight:600;font-size:15px;
}
.btn-text .arrow{transition:transform .2s ease;}
.btn-text:hover .arrow{transform:translateX(4px);}

/* ---------- 基础组件 ---------- */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:999px;
  background:var(--brand-050);color:var(--brand-700);
  font-size:14px;font-weight:500;line-height:1.4;
}
.chip-dark{background:rgba(255,255,255,.12);color:var(--accent);}
.dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex-shrink:0;display:inline-block;}

.h2{font-size:clamp(24px,3vw,32px);font-weight:700;line-height:1.3;letter-spacing:-.01em;}
.h3{font-size:19px;font-weight:600;line-height:1.45;}
.section{padding:40px 0;}
@media (min-width:1024px){.section{padding:52px 0;}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap;}
.section-desc{color:var(--ink-600);font-size:15px;margin-top:8px;max-width:620px;}
.lead{color:var(--ink-600);font-size:16px;line-height:1.85;}
.meta-line{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-400);}
.meta-line .sep{width:3px;height:3px;border-radius:50%;background:var(--ink-400);opacity:.7;}

.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-md);
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,59,255,.22);}
.card-lg{border-radius:var(--radius-lg);}

.stat{
  background:var(--brand-050);border-radius:var(--radius-md);
  padding:16px 18px;display:flex;flex-direction:column;gap:2px;
}
.stat-value{
  font-size:28px;font-weight:800;line-height:1.15;color:var(--brand-600);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.stat-label{font-size:13px;color:var(--ink-600);}
.stat-dark{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);}
.stat-dark .stat-value{color:#fff;}
.stat-dark .stat-label{color:rgba(255,255,255,.66);}
.stat-dot{display:inline-flex;align-items:center;gap:8px;font-size:12px;color:var(--ink-400);}
.stat-dark .stat-dot{color:rgba(23,224,194,.85);}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:44px 0 64px;}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;filter:blur(90px);pointer-events:none;z-index:0;}
.hero::before{width:520px;height:520px;background:rgba(108,59,255,.18);top:-200px;left:-160px;}
.hero::after{width:460px;height:460px;background:rgba(23,224,194,.18);bottom:-220px;right:-140px;}
.hero-grid{position:relative;z-index:1;display:grid;gap:40px;align-items:center;}
@media (min-width:1024px){.hero-grid{grid-template-columns:6fr 5fr;gap:56px;}}
.hero-title{
  font-size:clamp(30px,4.4vw,46px);
  font-weight:800;line-height:1.2;letter-spacing:-.02em;
  margin:18px 0 16px;
}
.hero-sub{font-size:17px;color:var(--ink-600);line-height:1.75;max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.trust-tags{display:flex;flex-wrap:wrap;gap:18px;margin-top:26px;font-size:14px;color:var(--ink-600);}
.trust-tags li{display:flex;align-items:center;gap:8px;}

.hero-visual{position:relative;}
.hero-card{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  background:#EFEDF8;aspect-ratio:4/3;box-shadow:var(--shadow-card);
}
.hero-card img{width:100%;height:100%;object-fit:cover;}
.hero-pill{
  position:absolute;top:18px;left:18px;
  background:rgba(255,255,255,.92);color:var(--brand-700);
  font-size:13px;font-weight:600;padding:6px 12px;border-radius:999px;
  box-shadow:0 4px 12px rgba(20,16,43,.08);
  display:inline-flex;align-items:center;gap:8px;
}
.hero-badge{
  position:absolute;right:18px;bottom:18px;
  background:rgba(255,255,255,.96);
  border-radius:var(--radius-md);
  padding:12px 16px;display:flex;flex-direction:column;gap:1px;
  box-shadow:0 12px 28px rgba(20,16,43,.14);
}
.hero-badge-value{
  font-size:24px;font-weight:800;color:var(--brand-600);line-height:1.1;
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.hero-badge-label{font-size:12px;color:var(--ink-600);}

/* ---------- 主张条 ---------- */
.brand-strip{padding:6px 0 10px;}
.strip-inner{
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  min-height:64px;padding:14px 22px;
  background:var(--card);border:1px solid var(--line);border-radius:999px;
  box-shadow:var(--shadow-card);
}
.strip-label{font-size:13px;color:var(--ink-400);letter-spacing:.06em;flex-shrink:0;}
.strip-list{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.strip-list li{
  display:flex;align-items:center;gap:14px;
  font-size:15px;color:var(--ink-600);font-weight:500;
}
.strip-list li::after{content:"";width:5px;height:5px;border-radius:50%;background:#D9D3EE;}
.strip-list li:last-child::after{display:none;}
@media (max-width:640px){
  .strip-inner{border-radius:var(--radius-lg);padding:14px 18px;}
  .strip-list li{font-size:14px;}
}

/* ---------- 理念区 ---------- */
.story-media{border-radius:var(--radius-lg);overflow:hidden;background:#EFEDF8;box-shadow:var(--shadow-card);aspect-ratio:5/4;}
.story-media img{width:100%;height:100%;object-fit:cover;}
@media (min-width:1024px){.story-shift{margin-top:-24px;}}
.num-list{display:flex;flex-direction:column;gap:14px;margin-top:26px;}
.num-list li{display:flex;gap:14px;align-items:flex-start;}
.num-box{
  width:32px;height:32px;border-radius:10px;flex-shrink:0;
  background:var(--brand-050);color:var(--brand-600);
  font-weight:700;font-size:14px;display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.num-list strong{display:block;font-size:15px;font-weight:600;}
.num-list p{font-size:14px;color:var(--ink-600);line-height:1.7;}

/* ---------- 精选 Bento ---------- */
.bento-media{border-radius:var(--radius-lg) var(--radius-lg) 0 0;overflow:hidden;background:#EFEDF8;aspect-ratio:16/9;}
.bento-media img{width:100%;height:100%;object-fit:cover;}
.bento-body{padding:20px 22px 22px;}
.bento-title{font-size:19px;font-weight:600;line-height:1.45;margin:10px 0 8px;}
.bento-sum{font-size:14px;color:var(--ink-600);line-height:1.7;}
.bar-card{position:relative;overflow:hidden;padding:22px 22px 22px 26px;}
.bar-card::before{
  content:"";position:absolute;left:0;top:20px;bottom:20px;width:4px;border-radius:0 4px 4px 0;
  background:linear-gradient(180deg,var(--brand-600),var(--accent));
}
.wide-card{position:relative;overflow:hidden;padding:24px 26px 24px 30px;}
.wide-card::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:4px;border-radius:0 4px 4px 0;
  background:linear-gradient(180deg,var(--brand-600),var(--accent));
}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);}
.link-arrow i{transition:transform .2s ease;font-size:12px;}
.card:hover .link-arrow i,.wide-card:hover .link-arrow i{transform:translateX(4px);}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;gap:18px;grid-template-columns:1fr;}
@media (min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr);}}
.news-item{display:flex;flex-direction:column;padding:22px;height:100%;}
.news-title{
  font-size:18px;font-weight:600;line-height:1.5;margin:10px 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-sum{
  font-size:14px;color:var(--ink-600);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px;padding-top:14px;border-top:1px solid var(--line);}
.empty-state{
  grid-column:1/-1;text-align:center;padding:48px 24px;
  background:var(--card);border:1px dashed var(--line);border-radius:var(--radius-lg);
}
.empty-icon{
  width:52px;height:52px;margin:0 auto 14px;border-radius:16px;
  background:var(--brand-050);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;font-size:20px;
}

/* ---------- 信任区 ---------- */
.trust-wrap{
  background:linear-gradient(135deg,var(--dark) 0%,var(--dark-2) 100%);
  border-radius:var(--radius-xl);
  padding:40px 26px;
  position:relative;overflow:hidden;
}
.trust-wrap::after{
  content:"";position:absolute;width:420px;height:420px;border-radius:50%;
  background:rgba(23,224,194,.12);filter:blur(100px);right:-120px;top:-140px;pointer-events:none;
}
@media (min-width:1024px){.trust-wrap{padding:56px 48px;}}
.trust-title{color:#fff;font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;}
.trust-desc{color:rgba(255,255,255,.68);font-size:15px;margin-top:12px;line-height:1.8;}
.quote-row{display:flex;gap:14px;align-items:flex-start;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.1);}
.quote-row:last-child{border-bottom:0;}
.avatar{
  width:40px;height:40px;border-radius:50%;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand-600),var(--accent));
  color:#fff;font-weight:700;font-size:15px;
}
.quote-text{color:rgba(255,255,255,.9);font-size:15px;line-height:1.7;}
.quote-name{color:rgba(255,255,255,.5);font-size:13px;margin-top:4px;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-md);
  overflow:hidden;transition:border-color .2s ease,background .2s ease;
}
.faq-item.is-open{border-color:rgba(108,59,255,.28);background:linear-gradient(90deg,var(--brand-050) 0 4px,#fff 4px);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink-900);
}
.faq-q i{color:var(--brand-600);transition:transform .2s ease;font-size:14px;flex-shrink:0;}
.faq-item.is-open .faq-q i{transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .28s ease;
}
.faq-item.is-open .faq-a{max-height:340px;}
.faq-a p{padding:0 20px 20px;font-size:15px;color:var(--ink-600);line-height:1.85;}

/* ---------- 订阅 CTA ---------- */
.cta-card{
  background:linear-gradient(135deg,var(--dark) 0%,var(--dark-2) 62%,#3A2478 100%);
  border-radius:var(--radius-xl);
  padding:40px 26px;
  position:relative;overflow:hidden;
}
@media (min-width:1024px){.cta-card{padding:56px 48px;}}
.cta-card::before{
  content:"";position:absolute;width:360px;height:360px;border-radius:50%;
  background:rgba(108,59,255,.35);filter:blur(90px);left:-100px;bottom:-160px;pointer-events:none;
}
.cta-title{color:#fff;font-size:clamp(22px,2.8vw,30px);font-weight:700;line-height:1.35;}
.cta-desc{color:rgba(255,255,255,.7);font-size:15px;margin-top:12px;line-height:1.8;max-width:520px;}
.sub-form{display:flex;gap:10px;flex-wrap:wrap;}
.sub-input{
  flex:1 1 220px;height:48px;border-radius:var(--radius-sm);
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.08);
  padding:0 16px;color:#fff;font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.sub-input::placeholder{color:rgba(255,255,255,.45);}
.sub-input:focus{
  outline:none;border-color:var(--brand-600);background:rgba(255,255,255,.12);
  box-shadow:0 0 0 4px rgba(108,59,255,.28);
}
.form-note{font-size:13px;color:rgba(255,255,255,.5);margin-top:12px;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:40px;background:var(--dark);color:rgba(255,255,255,.72);
  padding:56px 0 96px;
}
@media (min-width:1024px){.site-footer{padding:72px 0 34px;margin-top:56px;}}
.footer-grid{display:grid;gap:32px;grid-template-columns:repeat(2,minmax(0,1fr));}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;}
.footer-intro{font-size:14px;line-height:1.8;color:rgba(255,255,255,.55);margin-top:14px;max-width:320px;}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.62);transition:color .2s ease,padding-left .2s ease;}
.footer-links a:hover{color:var(--accent);padding-left:4px;}
.footer-contact{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);}
.footer-contact strong{color:#fff;font-weight:600;}
.socials{display:flex;gap:10px;margin-top:18px;}
.socials a{
  width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.08);color:rgba(255,255,255,.75);font-size:15px;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.socials a:hover{background:var(--brand-600);color:#fff;transform:translateY(-2px);}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.42);
}

/* ---------- 移动端底部 Tab ---------- */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:80;
  display:flex;background:rgba(255,255,255,.97);
  backdrop-filter:blur(12px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 20px rgba(20,16,43,.06);
}
.tab-item{
  flex:1;min-height:56px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--ink-400);position:relative;padding-top:6px;
  transition:color .2s ease;
}
.tab-item i{font-size:19px;}
.tab-item.is-active{color:var(--brand-600);font-weight:600;}
.tab-item.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand-600),var(--accent));
}
@media (min-width:1024px){.mobile-tab{display:none;}}

/* roulang page: article */
:root{
    --brand-600:#6C3BFF; --brand-700:#5222D9; --brand-050:#F1ECFF;
    --accent:#17E0C2; --hot:#FF6B3D;
    --ink-900:#14102B; --ink-600:#4A4468; --ink-400:#8B85A6;
    --bg:#F8F7FC; --card:#FFFFFF; --line:#E9E6F5;
    --dark:#14102B; --dark-2:#241B4A;
    --r-sm:12px; --r-md:16px; --r-lg:20px; --r-xl:24px; --r-2xl:32px;
    --shadow-1:0 1px 2px rgba(20,16,43,.04), 0 12px 32px rgba(108,59,255,.08);
    --shadow-2:0 2px 6px rgba(20,16,43,.06), 0 20px 48px rgba(108,59,255,.14);
    --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  body.page-article{
    margin:0; padding:0 0 76px;
    font-family:var(--font); font-size:16px; line-height:1.7;
    color:var(--ink-900); background:var(--bg);
    -webkit-font-smoothing:antialiased;
    font-variant-numeric:tabular-nums;
  }
  body.page-article img{max-width:100%; height:auto; display:block;}
  body.page-article a{color:inherit; text-decoration:none;}
  body.page-article button{font-family:inherit; cursor:pointer;}
  body.page-article a:focus-visible,
  body.page-article button:focus-visible,
  body.page-article input:focus-visible{
    outline:2px solid var(--accent); outline-offset:2px; border-radius:6px;
  }
  ::selection{background:var(--brand-050); color:var(--brand-700);}

  .container-x{width:100%; max-width:1200px; margin:0 auto; padding:0 20px;}
  @media (min-width:1024px){ .container-x{padding:0 40px;} }

  /* ---------- Header ---------- */
  .site-header{
    position:sticky; top:0; z-index:70; height:72px;
    background:rgba(255,255,255,.86);
    -webkit-backdrop-filter:blur(12px); backdrop-filter:blur(12px);
    border-bottom:1px solid transparent;
    transition:height .25s ease, background .25s ease, box-shadow .25s ease, border-color .25s ease;
  }
  .site-header.is-scrolled{
    height:60px; background:rgba(255,255,255,.94);
    border-bottom:1px solid var(--line);
    box-shadow:0 4px 20px rgba(20,16,43,.06);
  }
  .header-inner{display:flex; align-items:center; justify-content:space-between; gap:20px; height:100%;}
  .brand{display:flex; align-items:center; gap:10px; flex:0 0 auto;}
  .brand-mark{
    width:36px; height:36px; border-radius:12px; flex:0 0 auto;
    background:linear-gradient(135deg,var(--brand-600),var(--accent));
    color:#fff; font-weight:800; font-size:13px; letter-spacing:.5px;
    display:grid; place-items:center;
  }
  .brand-text{font-size:17px; font-weight:800; letter-spacing:-.01em; color:var(--ink-900);}
  .desktop-nav{display:none;}
  @media (min-width:1024px){
    .desktop-nav{display:flex; align-items:center; gap:2px; margin-left:8px; margin-right:auto;}
  }
  .nav-link{
    display:inline-block; padding:8px 14px; border-radius:999px;
    font-size:15px; font-weight:500; color:var(--ink-600);
    transition:background .2s ease, color .2s ease;
  }
  .nav-link:hover{background:var(--brand-050); color:var(--brand-700);}
  .nav-link.is-active{background:var(--brand-050); color:var(--brand-700); font-weight:700;}
  .header-cta{
    display:none; height:40px; padding:0 18px; border-radius:var(--r-sm);
    align-items:center; gap:8px; font-size:14px; font-weight:600;
  }
  @media (min-width:640px){ .header-cta{display:inline-flex;} }

  /* ---------- Buttons ---------- */
  .btn{
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    height:48px; padding:0 22px; border-radius:var(--r-sm);
    font-size:15px; font-weight:600; border:1px solid transparent;
    transition:transform .2s ease, background .2s ease, box-shadow .2s ease, border-color .2s ease, color .2s ease;
  }
  .btn-primary{
    background:var(--brand-600); color:#fff;
    box-shadow:inset 0 1px 0 rgba(255,255,255,.24), 0 10px 24px rgba(108,59,255,.26);
  }
  .btn-primary:hover{background:var(--brand-700); transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0); background:#4318BD;}
  .btn-ghost{background:#fff; border-color:var(--line); color:var(--ink-900);}
  .btn-ghost:hover{background:var(--brand-050); border-color:rgba(108,59,255,.5); color:var(--brand-700);}
  .btn-link{
    display:inline-flex; align-items:center; gap:6px;
    color:var(--brand-700); font-weight:600; font-size:14px;
  }
  .btn-link i{transition:transform .2s ease;}
  .btn-link:hover i{transform:translateX(4px);}

  /* ---------- Chips / badges ---------- */
  .chip{
    display:inline-flex; align-items:center; gap:6px;
    padding:6px 12px; border-radius:999px; font-size:14px; font-weight:600;
    background:var(--brand-050); color:var(--brand-700);
  }
  .chip-dark{background:rgba(255,255,255,.14); color:var(--accent);}
  .dot{width:4px; height:4px; border-radius:50%; background:currentColor; opacity:.7; flex:0 0 auto;}
  .badge{
    display:inline-flex; align-items:center; gap:8px;
    padding:8px 14px; border-radius:999px;
    background:var(--brand-050); color:var(--brand-700);
    font-size:13px; font-weight:700;
  }
  .num{font-variant-numeric:tabular-nums; letter-spacing:-.02em;}

  /* ---------- Page hero / article head ---------- */
  .article-hero{
    position:relative; overflow:hidden;
    background:
      radial-gradient(720px 320px at 12% 0%, rgba(108,59,255,.16), transparent 70%),
      radial-gradient(620px 300px at 88% 10%, rgba(23,224,194,.14), transparent 72%),
      linear-gradient(180deg,#FBFAFF 0%, #F8F7FC 100%);
    border-bottom:1px solid var(--line);
  }
  .article-hero::after{
    content:""; position:absolute; inset:0; pointer-events:none; opacity:.5;
    background-image:linear-gradient(rgba(20,16,43,.045) 1px, transparent 1px),
                     linear-gradient(90deg, rgba(20,16,43,.045) 1px, transparent 1px);
    background-size:56px 56px;
    -webkit-mask-image:linear-gradient(180deg, rgba(0,0,0,.5), transparent 78%);
            mask-image:linear-gradient(180deg, rgba(0,0,0,.5), transparent 78%);
  }
  .article-hero .container-x{position:relative; z-index:1; padding-top:26px; padding-bottom:34px;}
  .breadcrumb{display:flex; flex-wrap:wrap; align-items:center; gap:8px; font-size:13px; color:var(--ink-400);}
  .breadcrumb a{color:var(--ink-400); transition:color .2s ease;}
  .breadcrumb a:hover{color:var(--brand-700);}
  .breadcrumb .sep{color:#CFC9E4;}
  .breadcrumb .current{color:var(--ink-600); max-width:22ch; overflow:hidden; text-overflow:ellipsis; white-space:nowrap;}
  .article-hero .chip{margin-top:18px;}
  .article-h1{
    margin:14px 0 0; font-size:clamp(26px,4vw,36px); line-height:1.25; font-weight:800;
    letter-spacing:-.01em; max-width:900px;
  }
  .meta-row{
    display:flex; flex-wrap:wrap; align-items:center; gap:12px 18px;
    margin-top:18px; padding-top:18px; border-top:1px solid var(--line);
    font-size:13px; color:var(--ink-400);
  }
  .meta-row .meta-item{display:inline-flex; align-items:center; gap:7px;}
  .meta-row .meta-item i{color:var(--brand-600);}
  .meta-hot{color:var(--hot); font-weight:700;}
  .share-group{margin-left:auto; display:inline-flex; align-items:center; gap:8px;}
  .share-btn{
    width:34px; height:34px; border-radius:999px; border:1px solid var(--line);
    background:#fff; color:var(--ink-600); display:grid; place-items:center;
    transition:all .2s ease;
  }
  .share-btn:hover{background:var(--brand-050); border-color:rgba(108,59,255,.45); color:var(--brand-700);}
  .share-btn:active{transform:scale(.96);}

  /* ---------- Layout ---------- */
  .article-body{padding:40px 0 8px;}
  .article-grid{display:grid; grid-template-columns:1fr; gap:32px;}
  @media (min-width:1024px){
    .article-grid{grid-template-columns:minmax(0,760px) 300px; gap:48px; align-items:start;}
  }
  .article-main{
    background:var(--card); border:1px solid var(--line); border-radius:var(--r-xl);
    padding:24px 20px; box-shadow:var(--shadow-1);
  }
  @media (min-width:768px){ .article-main{padding:40px 44px;} }

  /* ---------- Entry content ---------- */
  .entry-content{font-size:17px; line-height:1.9; color:var(--ink-900); word-break:break-word;}
  .entry-content > *:first-child{margin-top:0;}
  .entry-content p{margin:0 0 1.1em;}
  .entry-content h2{
    position:relative; margin:2em 0 .8em; padding-left:14px;
    font-size:22px; line-height:1.45; font-weight:800; color:var(--ink-900);
  }
  .entry-content h2::before{
    content:""; position:absolute; left:0; top:.28em; width:4px; height:1.05em;
    border-radius:2px; background:var(--brand-600);
  }
  .entry-content h3{
    display:flex; align-items:center; gap:10px;
    margin:1.6em 0 .6em; font-size:19px; font-weight:700; color:var(--ink-900);
  }
  .entry-content h3::before{
    content:""; width:10px; height:10px; border-radius:3px; flex:0 0 auto;
    background:linear-gradient(135deg,var(--brand-600),var(--accent));
  }
  .entry-content blockquote{
    margin:1.6em 0; padding:16px 20px;
    background:#F1ECFF; border-left:3px solid var(--brand-600);
    border-radius:0 16px 16px 0; color:var(--ink-600);
  }
  .entry-content blockquote p:last-child{margin-bottom:0;}
  .entry-content img{border-radius:16px; margin:1.4em auto;}
  .entry-content figure{margin:1.6em 0;}
  .entry-content figcaption,
  .entry-content .caption{font-size:13px; color:var(--ink-400); text-align:center; margin-top:10px;}
  .entry-content ul,.entry-content ol{margin:0 0 1.2em; padding-left:1.35em;}
  .entry-content li{margin:.4em 0;}
  .entry-content ul{list-style:disc;}
  .entry-content ul li::marker{color:var(--brand-600);}
  .entry-content ol{list-style:decimal; counter-reset:none;}
  .entry-content ol li::marker{color:var(--brand-600); font-weight:700;}
  .entry-content a{color:var(--brand-700); text-decoration:underline; text-underline-offset:3px;}
  .entry-content a:hover{color:var(--brand-600);}
  .entry-content strong{font-weight:700;}
  .entry-content table{width:100%; border-collapse:collapse; margin:1.4em 0; font-size:15px;}
  .entry-content th,.entry-content td{border:1px solid var(--line); padding:10px 12px; text-align:left;}
  .entry-content th{background:var(--brand-050); color:var(--brand-700); font-weight:700;}
  .entry-content hr{border:none; border-top:1px solid var(--line); margin:2em 0;}
  .entry-content pre{
    background:var(--dark); color:#EDE9FF; padding:16px 18px; border-radius:14px;
    overflow-x:auto; font-size:14px; line-height:1.7;
  }
  .entry-content code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace; font-size:.94em;}
  .entry-content p code, .entry-content li code{
    background:var(--brand-050); color:var(--brand-700); padding:2px 6px; border-radius:6px;
  }

  /* ---------- Empty state ---------- */
  .empty-state{text-align:center; padding:56px 20px;}
  .empty-state .empty-icon{
    width:64px; height:64px; margin:0 auto 18px; border-radius:20px;
    background:var(--brand-050); color:var(--brand-600);
    display:grid; place-items:center; font-size:26px;
  }
  .empty-state h2{margin:0 0 8px; font-size:20px; font-weight:800;}
  .empty-state p{margin:0 0 20px; color:var(--ink-600); font-size:15px;}

  /* ---------- Tags / back ---------- */
  .article-tail{
    margin-top:32px; padding-top:24px; border-top:1px solid var(--line);
    display:flex; flex-wrap:wrap; align-items:center; gap:14px;
  }
  .tag-list{display:flex; flex-wrap:wrap; gap:8px;}
  .tag{
    padding:6px 12px; border-radius:999px; font-size:13px; font-weight:600;
    background:var(--brand-050); color:var(--brand-700);
    transition:background .2s ease, transform .2s ease;
  }
  .tag:hover{background:#E4DAFF; transform:translateY(-1px);}

  /* ---------- Sidebar ---------- */
  .sidebar{display:grid; gap:20px;}
  @media (min-width:1024px){
    .sidebar{position:sticky; top:88px;}
  }
  .side-card{
    background:var(--card); border:1px solid var(--line); border-radius:var(--r-lg);
    padding:20px; box-shadow:var(--shadow-1);
  }
  .side-title{
    display:flex; align-items:center; gap:8px;
    font-size:15px; font-weight:800; margin:0 0 14px; color:var(--ink-900);
  }
  .side-title::before{content:""; width:4px; height:16px; border-radius:2px; background:var(--brand-600);}
  .side-list{list-style:none; margin:0; padding:0; display:grid; gap:12px;}
  .side-list li{padding-bottom:12px; border-bottom:1px dashed var(--line);}
  .side-list li:last-child{padding-bottom:0; border-bottom:none;}
  .side-list a{display:block; font-size:14px; font-weight:600; line-height:1.6; color:var(--ink-900); transition:color .2s ease;}
  .side-list a:hover{color:var(--brand-700);}
  .side-list .side-meta{display:block; margin-top:5px; font-size:12px; color:var(--ink-400);}
  .side-rank{display:inline-block; width:20px; font-size:12px; font-weight:800; color:var(--brand-600);}
  .side-cta{
    background:linear-gradient(140deg,var(--dark) 0%, var(--dark-2) 100%);
    border:none; color:#fff;
  }
  .side-cta p{margin:0 0 14px; font-size:14px; line-height:1.7; color:rgba(255,255,255,.78);}
  .side-cta .side-title{color:#fff;}
  .side-cta .side-title::before{background:var(--accent);}

  /* ---------- Related ---------- */
  .section{padding:52px 0;}
  @media (min-width:1024px){ .section{padding:72px 0;} }
  .section-head{display:flex; align-items:flex-end; justify-content:space-between; gap:16px; margin-bottom:24px;}
  .section-head h2{margin:0; font-size:clamp(21px,2.4vw,26px); font-weight:800; letter-spacing:-.01em;}
  .section-head p{margin:8px 0 0; color:var(--ink-600); font-size:14px;}
  .card-grid{display:grid; grid-template-columns:1fr; gap:20px;}
  @media (min-width:640px){ .card-grid{grid-template-columns:repeat(2,1fr);} }
  @media (min-width:1024px){ .card-grid.cols-3{grid-template-columns:repeat(3,1fr);} }
  .card{
    display:flex; flex-direction:column; gap:12px;
    background:var(--card); border:1px solid var(--line); border-radius:var(--r-md);
    padding:20px; box-shadow:var(--shadow-1);
    transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  }
  .card:hover{transform:translateY(-4px); box-shadow:var(--shadow-2); border-color:rgba(108,59,255,.22);}
  .card .card-title{margin:0; font-size:17px; font-weight:700; line-height:1.55;}
  .card .card-meta{margin-top:auto; display:flex; align-items:center; gap:10px; font-size:12px; color:var(--ink-400);}
  .card-thumb{border-radius:14px; overflow:hidden; aspect-ratio:16/9; background:#EFEDF8;}
  .card-thumb img{width:100%; height:100%; object-fit:cover; transition:transform .4s ease;}
  .card:hover .card-thumb img{transform:scale(1.04);}

  /* ---------- FAQ ---------- */
  .faq{display:grid; gap:12px; max-width:880px;}
  .faq-item{border:1px solid var(--line); border-radius:var(--r-md); background:#fff; overflow:hidden; transition:border-color .2s ease, background .2s ease;}
  .faq-item.is-open{border-color:rgba(108,59,255,.35); background:linear-gradient(90deg, rgba(241,236,255,.85), #fff 42%); border-left:3px solid var(--brand-600);}
  .faq-q{
    width:100%; display:flex; align-items:center; justify-content:space-between; gap:14px;
    padding:18px 20px; background:none; border:none; text-align:left;
    font-size:16px; font-weight:600; color:var(--ink-900);
  }
  .faq-q i{color:var(--brand-600); transition:transform .2s ease; flex:0 0 auto;}
  .faq-item.is-open .faq-q i{transform:rotate(180deg);}
  .faq-a{max-height:0; overflow:hidden; transition:max-height .28s ease;}
  .faq-a p{margin:0; padding:0 20px 20px; font-size:15px; line-height:1.8; color:var(--ink-600);}

  /* ---------- CTA ---------- */
  .cta-card{
    position:relative; overflow:hidden;
    border-radius:var(--r-2xl); padding:34px 24px;
    background:linear-gradient(135deg,var(--dark) 0%, var(--dark-2) 58%, #3A2790 100%);
    color:#fff;
  }
  @media (min-width:1024px){ .cta-card{padding:48px; display:grid; grid-template-columns:1.1fr 1fr; gap:40px; align-items:center;} }
  .cta-card::before{
    content:""; position:absolute; width:420px; height:420px; right:-120px; top:-160px;
    background:radial-gradient(circle, rgba(23,224,194,.28), transparent 68%);
  }
  .cta-card h2{position:relative; margin:0 0 12px; font-size:clamp(22px,2.6vw,30px); font-weight:800; line-height:1.3;}
  .cta-card p{position:relative; margin:0 0 22px; color:rgba(255,255,255,.78); font-size:15px; line-height:1.8;}
  .cta-form{position:relative; display:flex; flex-wrap:wrap; gap:12px;}
  .cta-form input{
    flex:1 1 220px; height:48px; padding:0 16px; border-radius:var(--r-sm);
    border:1px solid rgba(255,255,255,.22); background:rgba(255,255,255,.08);
    color:#fff; font-size:15px; transition:border-color .2s ease, box-shadow .2s ease;
  }
  .cta-form input::placeholder{color:rgba(255,255,255,.52);}
  .cta-form input:focus{outline:none; border-color:var(--accent); box-shadow:0 0 0 4px rgba(23,224,194,.16);}
  .privacy-note{position:relative; margin:14px 0 0; font-size:13px; color:rgba(255,255,255,.55);}

  /* ---------- Footer ---------- */
  .site-footer{background:var(--dark); color:rgba(255,255,255,.72); padding:56px 0 24px; margin-top:24px;}
  .footer-grid{display:grid; grid-template-columns:1fr; gap:32px;}
  @media (min-width:640px){ .footer-grid{grid-template-columns:repeat(2,1fr);} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:1.3fr 1fr 1fr 1.1fr; gap:40px;} }
  .footer-brand{display:flex; align-items:center; gap:10px; color:#fff; font-size:17px; font-weight:800; margin-bottom:14px;}
  .footer-intro{margin:0 0 18px; font-size:14px; line-height:1.8; color:rgba(255,255,255,.62);}
  .socials{display:flex; gap:10px;}
  .socials a{
    width:36px; height:36px; border-radius:999px; display:grid; place-items:center;
    background:rgba(255,255,255,.08); color:rgba(255,255,255,.8);
    transition:background .2s ease, color .2s ease, transform .2s ease;
  }
  .socials a:hover{background:rgba(23,224,194,.16); color:var(--accent); transform:translateY(-2px);}
  .footer-title{margin:0 0 14px; font-size:15px; font-weight:700; color:#fff;}
  .footer-links{display:grid; gap:10px;}
  .footer-links a{font-size:14px; color:rgba(255,255,255,.68); transition:color .2s ease;}
  .footer-links a:hover{color:var(--accent);}
  .footer-contact p{margin:0 0 10px; font-size:14px; color:rgba(255,255,255,.68);}
  .footer-contact strong{color:#fff; font-weight:600; margin-right:6px;}
  .footer-bottom{
    margin-top:40px; padding-top:20px; border-top:1px solid rgba(255,255,255,.12);
    display:flex; flex-wrap:wrap; gap:10px 24px; justify-content:space-between;
    font-size:13px; color:rgba(255,255,255,.5);
  }

  /* ---------- Mobile tabbar ---------- */
  .mobile-tabbar{
    position:fixed; left:0; right:0; bottom:0; z-index:80;
    display:flex; background:rgba(255,255,255,.97);
    border-top:1px solid var(--line); padding-bottom:env(safe-area-inset-bottom);
    -webkit-backdrop-filter:blur(12px); backdrop-filter:blur(12px);
  }
  @media (min-width:1024px){ .mobile-tabbar{display:none;} }
  .tab{
    position:relative; flex:1; height:56px;
    display:flex; flex-direction:column; align-items:center; justify-content:center; gap:3px;
    font-size:11px; color:var(--ink-400); transition:color .2s ease;
  }
  .tab i{font-size:17px;}
  .tab:hover{color:var(--brand-600);}
  .tab.is-active{color:var(--brand-700); font-weight:700;}
  .tab.is-active::before{
    content:""; position:absolute; top:0; width:28px; height:2px; border-radius:2px;
    background:linear-gradient(90deg,var(--brand-600),var(--accent));
  }

/* roulang page: category1 */
:root{
  --brand-050:#F1ECFF;
  --brand-600:#6C3BFF;
  --brand-700:#5222D9;
  --accent:#17E0C2;
  --hot:#FF6B3D;
  --ink-900:#14102B;
  --ink-600:#4A4468;
  --ink-400:#8B85A6;
  --bg:#F8F7FC;
  --card:#FFFFFF;
  --line:#E9E6F5;
  --dark:#14102B;
  --dark-2:#241B4A;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-card:0 1px 2px rgba(20,16,43,.04), 0 12px 32px rgba(108,59,255,.08);
  --shadow-hover:0 2px 4px rgba(20,16,43,.06), 0 20px 44px rgba(108,59,255,.16);
  --ease:200ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.7;
  color:var(--ink-900);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;font-size:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
::selection{background:var(--brand-050);color:var(--brand-700);}

.container-x{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:1024px){
  .container-x{padding-left:40px;padding-right:40px;}
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  height:72px;
  display:flex;
  align-items:center;
  background:rgba(248,247,252,.86);
  backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid transparent;
  transition:height var(--ease), background var(--ease), box-shadow var(--ease), border-color var(--ease);
}
.site-header.is-scrolled{
  height:60px;
  background:rgba(255,255,255,.92);
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px rgba(20,16,43,.06);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  width:100%;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;
  border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand-600),var(--accent));
  color:#fff;
  font-weight:800;
  font-size:14px;
  letter-spacing:.02em;
  font-variant-numeric:tabular-nums;
}
.brand-text{font-weight:800;font-size:18px;letter-spacing:-.01em;color:var(--ink-900);}
.desktop-nav{display:none;}
.nav-link{
  position:relative;
  padding:8px 4px;
  font-size:15px;
  color:var(--ink-600);
  transition:color var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;left:4px;right:4px;bottom:0;
  height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand-600),var(--accent));
  transform:scaleX(0);transform-origin:left;
  transition:transform var(--ease);
}
.nav-link:hover{color:var(--brand-700);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-700);font-weight:700;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-cta{display:none;margin-left:auto;}

@media (min-width:900px){
  .desktop-nav{display:flex;align-items:center;gap:28px;margin-left:24px;}
  .header-cta{display:inline-flex;}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 22px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  transition:transform var(--ease), background var(--ease), color var(--ease), border-color var(--ease), box-shadow var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:var(--brand-600);
  color:#fff;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.28), 0 10px 24px rgba(108,59,255,.22);
}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:inset 0 1px 0 rgba(255,255,255,.28), 0 16px 32px rgba(108,59,255,.28);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:#fff;
  color:var(--ink-900);
  border:1px solid var(--line);
}
.btn-ghost:hover{background:var(--brand-050);border-color:rgba(108,59,255,.5);color:var(--brand-700);transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:10px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-600);font-weight:600;font-size:14px;
}
.link-arrow i{transition:transform var(--ease);}
.link-arrow:hover i{transform:translateX(4px);}

/* ---------- 标签 / 徽章 ---------- */
.tag{
  display:inline-flex;align-items:center;
  padding:6px 12px;
  border-radius:999px;
  background:var(--brand-050);
  color:var(--brand-700);
  font-size:14px;
  font-weight:600;
  line-height:1;
}
.tag-accent{background:rgba(23,224,194,.14);color:#0E8F7C;}
.dot-sep{
  width:4px;height:4px;border-radius:50%;
  background:var(--ink-400);
  display:inline-block;
}

/* ---------- 面包屑 ---------- */
.crumb{
  padding:20px 0 0;
  font-size:13px;
  color:var(--ink-400);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.crumb a:hover{color:var(--brand-600);}
.crumb .cur{color:var(--ink-600);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  padding:32px 0 64px;
  background:
    radial-gradient(560px 380px at 10% 14%, rgba(108,59,255,.16), transparent 70%),
    radial-gradient(520px 360px at 88% 6%, rgba(23,224,194,.14), transparent 72%),
    var(--bg);
}
.hero-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:36px;
  align-items:center;
}
.hero-eyebrow{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:18px;}
.hero h1{
  font-size:clamp(28px,4vw,40px);
  font-weight:800;
  line-height:1.22;
  letter-spacing:-.02em;
  max-width:15em;
}
.hero-sub{
  margin-top:14px;
  font-size:17px;
  color:var(--ink-600);
}
.hero-desc{
  margin-top:14px;
  font-size:15px;
  color:var(--ink-600);
  max-width:36em;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:26px;
}
.hero-points{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-top:22px;
  font-size:13.5px;
  color:var(--ink-400);
}
.hero-media{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:#EFEDF8;
  box-shadow:var(--shadow-card);
}
.hero-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.hero-float-tag{
  position:absolute;
  top:18px;left:18px;
  background:rgba(255,255,255,.94);
  color:var(--brand-700);
  font-size:13px;
  font-weight:700;
  padding:7px 13px;
  border-radius:999px;
  box-shadow:0 6px 18px rgba(20,16,43,.12);
}
.hero-badge{
  position:absolute;
  right:18px;bottom:18px;
  background:#fff;
  border-radius:16px;
  padding:12px 16px;
  box-shadow:0 14px 30px rgba(20,16,43,.16);
  display:flex;
  flex-direction:column;
  gap:2px;
  min-width:132px;
}
.hero-badge .num{
  font-size:26px;
  font-weight:800;
  color:var(--brand-600);
  line-height:1.1;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
}
.hero-badge .cap{font-size:12px;color:var(--ink-400);}
@media (min-width:900px){
  .hero{padding:44px 0 88px;}
  .hero-grid{grid-template-columns:6fr 5fr;gap:52px;}
}

/* ---------- 通用板块 ---------- */
.section{padding:56px 0;}
.section-head{max-width:46em;margin-bottom:36px;}
.section-head h2{
  font-size:clamp(22px,2.6vw,30px);
  font-weight:800;
  letter-spacing:-.01em;
  line-height:1.3;
}
.section-head p{margin-top:12px;color:var(--ink-600);font-size:15px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--brand-600);
  letter-spacing:.04em;
  margin-bottom:12px;
}
.eyebrow::before{
  content:"";width:4px;height:14px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand-600),var(--accent));
}
@media (min-width:1024px){
  .section{padding:76px 0;}
}

/* ---------- Zigzag ---------- */
.zigzag{display:flex;flex-direction:column;gap:48px;}
.zig{
  display:grid;
  grid-template-columns:1fr;
  gap:28px;
  align-items:center;
}
.zig-copy h3{
  font-size:20px;
  font-weight:700;
  line-height:1.4;
  display:flex;
  align-items:flex-start;
  gap:10px;
}
.zig-index{
  flex:0 0 auto;
  width:32px;height:32px;
  border-radius:10px;
  display:grid;place-items:center;
  background:var(--brand-050);
  color:var(--brand-600);
  font-size:14px;
  font-weight:800;
  font-variant-numeric:tabular-nums;
}
.zig-copy p{
  margin-top:12px;
  color:var(--ink-600);
  font-size:15.5px;
}
.zig-copy .zig-list{
  margin-top:16px;
  display:flex;flex-direction:column;gap:8px;
}
.zig-copy .zig-list li{
  display:flex;align-items:flex-start;gap:8px;
  font-size:14.5px;
  color:var(--ink-600);
}
.zig-copy .zig-list i{color:var(--accent);margin-top:5px;font-size:13px;}
.zig-media{
  border-radius:20px;
  overflow:hidden;
  background:#EFEDF8;
  box-shadow:var(--shadow-card);
}
.zig-media img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  transition:transform 320ms ease;
}
.zig-media:hover img{transform:scale(1.03);}
@media (min-width:900px){
  .zig{grid-template-columns:1fr 1fr;gap:48px;}
  .zig-media{order:2;}
  .zig-copy{order:1;}
  .zig.reverse .zig-media{order:1;}
  .zig.reverse .zig-copy{order:2;}
}

/* ---------- 数据徽章横带 ---------- */
.badge-band{
  margin:12px 0;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  padding:24px;
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
}
.badge-item{display:flex;align-items:center;gap:14px;}
.badge-item .bdot{
  flex:0 0 auto;
  width:10px;height:10px;border-radius:50%;
  background:linear-gradient(135deg,var(--brand-600),var(--accent));
}
.badge-item .num{
  font-size:26px;
  font-weight:800;
  color:var(--brand-600);
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
  line-height:1.1;
}
.badge-item .num small{font-size:14px;font-weight:700;margin-left:2px;}
.badge-item .cap{font-size:13px;color:var(--ink-400);margin-top:2px;}
@media (min-width:768px){
  .badge-band{grid-template-columns:repeat(3,1fr);padding:28px 32px;}
  .badge-item + .badge-item{border-left:1px solid var(--line);padding-left:28px;}
}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  box-shadow:0 1px 2px rgba(20,16,43,.03);
  overflow:hidden;
  transition:border-color var(--ease), box-shadow var(--ease), background var(--ease);
}
.faq-item.is-open{
  background:var(--brand-050);
  border-color:rgba(108,59,255,.28);
  box-shadow:var(--shadow-card);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 20px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--ink-900);
  position:relative;
}
.faq-item.is-open .faq-q{color:var(--brand-700);}
.faq-item.is-open .faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;
  background:var(--brand-600);
}
.faq-q i{color:var(--ink-400);transition:transform var(--ease);flex:0 0 auto;}
.faq-item.is-open .faq-q i{transform:rotate(180deg);color:var(--brand-600);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 260ms ease;
}
.faq-item.is-open .faq-a{max-height:320px;}
.faq-a p{
  padding:0 20px 20px;
  color:var(--ink-600);
  font-size:15px;
}

/* ---------- CTA ---------- */
.cta-wrap{padding:56px 0 72px;}
.cta-card{
  border-radius:var(--radius-lg);
  background:linear-gradient(120deg,var(--dark) 0%,var(--brand-700) 58%,#3A1CA8 100%);
  color:#fff;
  padding:36px 28px;
  display:grid;
  grid-template-columns:1fr;
  gap:26px;
  align-items:center;
  overflow:hidden;
  position:relative;
}
.cta-card::after{
  content:"";
  position:absolute;
  right:-80px;top:-80px;
  width:280px;height:280px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(23,224,194,.28),transparent 68%);
  pointer-events:none;
}
.cta-card h2{
  font-size:clamp(22px,2.6vw,30px);
  font-weight:800;
  line-height:1.3;
  letter-spacing:-.01em;
}
.cta-card p{margin-top:10px;color:rgba(255,255,255,.76);font-size:15px;max-width:34em;}
.subscribe{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  position:relative;
  z-index:1;
}
.subscribe input{
  flex:1 1 200px;
  height:48px;
  border-radius:var(--radius-sm);
  border:1px solid rgba(255,255,255,.24);
  background:rgba(255,255,255,.1);
  color:#fff;
  padding:0 16px;
  transition:border-color var(--ease), box-shadow var(--ease), background var(--ease);
  min-width:0;
}
.subscribe input::placeholder{color:rgba(255,255,255,.6);}
.subscribe input:focus{
  outline:none;
  border-color:var(--accent);
  background:rgba(255,255,255,.16);
  box-shadow:0 0 0 4px rgba(23,224,194,.22);
}
.subscribe .btn-primary{background:var(--accent);color:#07231F;box-shadow:none;}
.subscribe .btn-primary:hover{background:#11C9AE;color:#06201C;}
.cta-note{margin-top:12px;font-size:13px;color:rgba(255,255,255,.62);position:relative;z-index:1;}
@media (min-width:900px){
  .cta-card{grid-template-columns:1.1fr 1fr;padding:48px 48px;}
  .cta-wrap{padding:72px 0 96px;}
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--dark);
  color:rgba(255,255,255,.78);
  padding:56px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:32px 24px;
}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  color:#fff;font-weight:800;font-size:18px;
  margin-bottom:14px;
}
.footer-intro{font-size:14px;color:rgba(255,255,255,.64);max-width:26em;}
.footer-title{
  font-size:14px;font-weight:700;color:#fff;
  margin-bottom:14px;letter-spacing:.02em;
}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.66);transition:color var(--ease);}
.footer-links a:hover{color:var(--accent);}
.footer-contact p{font-size:14px;color:rgba(255,255,255,.66);margin-bottom:8px;}
.footer-contact strong{color:#fff;font-weight:600;}
.socials{display:flex;gap:10px;margin-top:18px;}
.socials a{
  width:36px;height:36px;border-radius:12px;
  display:grid;place-items:center;
  background:rgba(255,255,255,.08);
  color:rgba(255,255,255,.8);
  font-size:15px;
  transition:background var(--ease), color var(--ease), transform var(--ease);
}
.socials a:hover{background:rgba(23,224,194,.18);color:var(--accent);transform:translateY(-2px);}
.footer-bottom{
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:13px;
  color:rgba(255,255,255,.5);
}
@media (min-width:900px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
}

/* ---------- 移动端底部 Tab ---------- */
.mobile-tab{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:60;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  height:56px;
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(160%) blur(12px);
  border-top:1px solid var(--line);
  box-shadow:0 -6px 20px rgba(20,16,43,.06);
}
.mobile-tab a{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  font-size:11px;
  color:var(--ink-400);
  position:relative;
  transition:color var(--ease);
}
.mobile-tab a i{font-size:17px;}
.mobile-tab a::before{
  content:"";
  position:absolute;
  top:0;left:50%;
  transform:translateX(-50%) scaleX(0);
  width:22px;height:2px;
  border-radius:0 0 2px 2px;
  background:linear-gradient(90deg,var(--brand-600),var(--accent));
  transition:transform var(--ease);
}
.mobile-tab a.is-active{color:var(--brand-600);font-weight:700;}
.mobile-tab a.is-active::before{transform:translateX(-50%) scaleX(1);}
@media (max-width:899px){
  body{padding-bottom:76px;}
}
@media (min-width:900px){
  .mobile-tab{display:none;}
}

/* roulang page: category2 */
:root{
  --brand-600:#6C3BFF;
  --brand-700:#5222D9;
  --brand-050:#F1ECFF;
  --accent:#17E0C2;
  --hot:#FF6B3D;
  --ink-900:#14102B;
  --ink-600:#4A4468;
  --ink-400:#8B85A6;
  --bg:#F8F7FC;
  --card:#FFFFFF;
  --line:#E9E6F5;
  --dark:#14102B;
  --dark-2:#241B4A;
  --radius-sm:12px;
  --radius-md:16px;
  --radius-lg:20px;
  --radius-xl:32px;
  --shadow-card:0 1px 2px rgba(20,16,43,.04), 0 12px 32px rgba(108,59,255,.08);
  --shadow-hover:0 2px 4px rgba(20,16,43,.05), 0 18px 44px rgba(108,59,255,.16);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-900);
  background:var(--bg);
  padding-bottom:76px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media (min-width:1024px){
  .container-x{padding-left:40px;padding-right:40px;}
  body{padding-bottom:0;}
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  height:72px;
  background:rgba(248,247,252,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:height .25s ease, background .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.site-header.is-scrolled{
  height:60px;
  background:rgba(255,255,255,.94);
  box-shadow:0 1px 2px rgba(20,16,43,.05), 0 10px 28px rgba(20,16,43,.06);
  border-bottom-color:var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:100%;}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-700));
  color:#fff;font-size:13px;font-weight:800;letter-spacing:.02em;
  box-shadow:0 6px 16px rgba(108,59,255,.28);
}
.brand-text{font-size:18px;letter-spacing:.01em;color:var(--ink-900);}
.desktop-nav{display:none;}
@media (min-width:1024px){
  .desktop-nav{display:flex;align-items:center;gap:4px;}
}
.nav-link{
  padding:8px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--ink-600);
  transition:background .2s ease,color .2s ease;
  white-space:nowrap;
}
.nav-link:hover{background:var(--brand-050);color:var(--brand-700);}
.nav-link.is-active{background:var(--brand-050);color:var(--brand-700);font-weight:600;}
.header-cta{display:none;}
@media (min-width:640px){.header-cta{display:inline-flex;}}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:12px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .2s ease,background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--brand-600);color:#fff;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.22), 0 8px 20px rgba(108,59,255,.26);
}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:#fff;color:var(--ink-900);
  border:1px solid var(--line);
}
.btn-ghost:hover{background:var(--brand-050);border-color:var(--brand-600);color:var(--brand-700);}
.btn-light{
  background:#fff;color:var(--brand-700);
}
.btn-light:hover{background:var(--brand-050);transform:translateY(-1px);}
.btn-sm{height:42px;padding:0 18px;font-size:14px;}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand-600);font-weight:600;font-size:15px;}
.text-link i{transition:transform .2s ease;}
.text-link:hover i{transform:translateX(4px);}

/* ---------- Pills / Badges ---------- */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:999px;
  background:var(--brand-050);color:var(--brand-700);
  font-size:14px;font-weight:600;line-height:1.3;
}
.pill-dark{background:rgba(255,255,255,.14);color:var(--accent);}
.dot{width:6px;height:6px;border-radius:50%;background:var(--brand-600);flex:0 0 6px;}
.dot-accent{background:var(--accent);}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  border-radius:0 0 var(--radius-xl) var(--radius-xl);
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(118deg,rgba(248,247,252,.97) 0%,rgba(248,247,252,.90) 52%,rgba(241,236,255,.82) 100%);
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,224,194,.18),rgba(23,224,194,0) 68%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;padding-top:28px;padding-bottom:52px;}
@media (min-width:1024px){.hero-inner{padding-top:40px;padding-bottom:76px;}}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);}
.breadcrumb a{color:var(--ink-400);}
.breadcrumb a:hover{color:var(--brand-600);}
.breadcrumb .sep{color:#C7C2DA;}
.hero-title{
  font-size:clamp(28px,4vw,40px);
  font-weight:800;line-height:1.22;letter-spacing:-.01em;
  margin-top:16px;
}
.hero-lead{
  margin-top:18px;max-width:640px;
  font-size:16.5px;line-height:1.85;color:var(--ink-600);
}
.hero-media{
  position:relative;border-radius:24px;overflow:hidden;
  background:#EFEDF8;border:1px solid rgba(255,255,255,.9);
  box-shadow:0 2px 4px rgba(20,16,43,.05), 0 24px 56px rgba(108,59,255,.16);
  aspect-ratio:4/3;
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.float-badge{
  position:absolute;left:16px;bottom:16px;
  display:flex;align-items:center;gap:8px;
  padding:10px 14px;border-radius:14px;
  background:rgba(255,255,255,.94);
  box-shadow:0 10px 26px rgba(20,16,43,.14);
  font-size:13px;font-weight:600;color:var(--ink-900);
}
.float-badge b{
  font-size:20px;font-weight:800;color:var(--brand-600);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}

/* ---------- Section ---------- */
.section{padding-top:56px;padding-bottom:56px;}
@media (min-width:1024px){.section{padding-top:88px;padding-bottom:88px;}}
.section-head{max-width:720px;}
.section-title{
  font-size:clamp(23px,2.6vw,30px);
  font-weight:800;line-height:1.3;letter-spacing:-.01em;
}
.section-sub{margin-top:12px;color:var(--ink-600);font-size:16px;line-height:1.8;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--brand-600);
  letter-spacing:.08em;text-transform:uppercase;
  margin-bottom:12px;
}
.eyebrow::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--brand-600);}

/* ---------- Step flow ---------- */
.step-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:1024px){.step-grid{grid-template-columns:1fr 340px;gap:48px;align-items:start;}}
.step-list{display:grid;gap:20px;}
.step-item{
  display:grid;grid-template-columns:64px 1fr;gap:14px;align-items:start;
}
@media (min-width:768px){.step-item{grid-template-columns:88px 1fr;gap:22px;}}
.step-num{
  font-size:52px;line-height:1;font-weight:800;
  color:var(--brand-050);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
  padding-top:4px;
}
@media (min-width:768px){.step-num{font-size:64px;}}
@supports (-webkit-text-stroke:1px #000){
  .step-num{color:transparent;-webkit-text-stroke:2px var(--brand-600);}
}
.step-card{
  background:var(--card);border:1px solid var(--line);border-radius:20px;
  padding:22px 24px;box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,59,255,.28);}
.step-card h3{font-size:18px;font-weight:700;line-height:1.5;}
.step-card p{margin-top:8px;color:var(--ink-600);font-size:15.5px;line-height:1.8;}
.step-meta{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px;}
.mini-tag{
  font-size:12.5px;font-weight:600;color:var(--brand-700);
  background:var(--brand-050);border-radius:999px;padding:4px 10px;
}

/* ---------- Sticky info card ---------- */
.info-card{
  background:var(--card);border:1px solid var(--line);
  border-radius:20px;padding:24px;box-shadow:var(--shadow-card);
}
@media (min-width:1024px){
  .info-card-wrap{position:sticky;top:96px;}
}
.info-card h3{font-size:17px;font-weight:700;}
.info-card .info-note{margin-top:10px;font-size:14px;color:var(--ink-600);line-height:1.8;}
.stat-badge{
  display:flex;align-items:center;gap:12px;
  padding:14px;border-radius:16px;
  background:var(--brand-050);border:1px solid rgba(108,59,255,.14);
}
.stat-badge .bdot{width:8px;height:8px;border-radius:50%;background:var(--brand-600);flex:0 0 8px;}
.stat-badge .bnum{
  font-size:24px;font-weight:800;color:var(--brand-700);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.1;
}
.stat-badge .btxt{font-size:12.5px;color:var(--ink-600);line-height:1.5;}

/* ---------- Feature cards ---------- */
.card-grid{display:grid;grid-template-columns:1fr;gap:18px;}
@media (min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,1fr);}}
.f-card{
  background:var(--card);border:1px solid var(--line);border-radius:20px;
  padding:24px;box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.f-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,59,255,.28);}
.f-icon{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  background:var(--brand-050);color:var(--brand-600);font-size:18px;
  border:1px solid rgba(108,59,255,.16);
}
.f-card h3{margin-top:16px;font-size:17.5px;font-weight:700;line-height:1.5;}
.f-card p{margin-top:8px;font-size:14.5px;color:var(--ink-600);line-height:1.8;}
.f-card .f-link{margin-top:14px;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);}
.f-card .f-link i{transition:transform .2s ease;}
.f-card:hover .f-link i{transform:translateX(4px);}

/* ---------- Stat strip ---------- */
.stat-strip{
  display:grid;grid-template-columns:1fr;gap:16px;
  background:var(--card);border:1px solid var(--line);
  border-radius:24px;padding:24px;box-shadow:var(--shadow-card);
}
@media (min-width:768px){.stat-strip{grid-template-columns:repeat(3,1fr);gap:24px;padding:28px 32px;}}
.strip-item{display:flex;align-items:center;gap:14px;}
.strip-item .snum{
  font-size:30px;font-weight:800;color:var(--brand-600);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1;
}
.strip-item .stxt{font-size:13.5px;color:var(--ink-600);line-height:1.55;}

/* ---------- Checklist panel ---------- */
.panel{
  background:var(--card);border:1px solid var(--line);
  border-radius:24px;padding:28px;box-shadow:var(--shadow-card);
}
@media (min-width:1024px){.panel{padding:40px;}}
.check-grid{display:grid;grid-template-columns:1fr;gap:28px;margin-top:26px;}
@media (min-width:768px){.check-grid{grid-template-columns:repeat(2,1fr);gap:40px;}}
.check-col h3{font-size:16px;font-weight:700;display:flex;align-items:center;gap:10px;}
.check-col h3 .sq{
  width:28px;height:28px;border-radius:9px;background:var(--brand-050);
  color:var(--brand-700);font-size:12px;font-weight:800;display:grid;place-items:center;
}
.check-list{margin-top:16px;display:grid;gap:12px;}
.check-list li{display:flex;gap:10px;font-size:15px;color:var(--ink-600);line-height:1.7;}
.check-list i{color:var(--accent);font-size:14px;margin-top:6px;flex:0 0 auto;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;margin-top:28px;}
.faq-item{
  background:var(--card);border:1px solid var(--line);
  border-left:3px solid transparent;border-radius:16px;
  transition:background .2s ease,border-color .2s ease;
  overflow:hidden;
}
.faq-item[open]{background:var(--brand-050);border-left-color:var(--brand-600);border-color:rgba(108,59,255,.2);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{
  width:26px;height:26px;flex:0 0 26px;border-radius:50%;
  display:grid;place-items:center;font-size:12px;
  background:#fff;color:var(--brand-600);border:1px solid var(--line);
  transition:transform .2s ease;
}
.faq-item[open] .faq-icon{transform:rotate(180deg);}
.faq-body{padding:0 22px 20px;font-size:15px;color:var(--ink-600);line-height:1.85;}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  border-radius:32px;
  background:linear-gradient(135deg,var(--dark) 0%,var(--dark-2) 100%);
  padding:36px 24px;
  color:#EDEAF8;
}
@media (min-width:1024px){.cta-panel{padding:56px 48px;}}
.cta-panel::after{
  content:"";position:absolute;left:-80px;bottom:-140px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,59,255,.42),rgba(108,59,255,0) 68%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:28px;}
@media (min-width:1024px){.cta-inner{grid-template-columns:1fr 1fr;gap:56px;align-items:center;}}
.cta-panel h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;line-height:1.32;color:#fff;}
.cta-panel p{margin-top:14px;font-size:15px;color:rgba(237,234,248,.78);line-height:1.8;}
.cta-points{margin-top:20px;display:grid;gap:10px;}
.cta-points li{display:flex;align-items:center;gap:10px;font-size:14.5px;color:rgba(237,234,248,.86);}
.cta-points i{color:var(--accent);font-size:13px;}
.form-row{display:flex;flex-direction:column;gap:12px;}
@media (min-width:520px){.form-row{flex-direction:row;}}
.field-input{
  flex:1;height:48px;border-radius:12px;padding:0 16px;
  border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.08);
  color:#fff;font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field-input::placeholder{color:rgba(237,234,248,.55);}
.field-input:focus{
  outline:none;border-color:var(--accent);
  background:rgba(255,255,255,.12);
  box-shadow:0 0 0 4px rgba(23,224,194,.18);
}
.form-note{margin-top:12px;font-size:12.5px;color:rgba(237,234,248,.6);}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:56px;
  background:linear-gradient(160deg,var(--dark) 0%,var(--dark-2) 100%);
  color:#C9C3E2;
  padding-top:52px;
  padding-bottom:28px;
}
@media (min-width:1024px){.site-footer{margin-top:88px;padding-top:72px;}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:#fff;}
.footer-intro{margin-top:14px;font-size:14px;line-height:1.85;color:rgba(201,195,226,.78);max-width:320px;}
.socials{display:flex;gap:10px;margin-top:18px;}
.socials a{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:rgba(255,255,255,.08);color:#D8D3EC;font-size:14px;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.socials a:hover{background:rgba(23,224,194,.16);color:var(--accent);transform:translateY(-2px);}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-links{display:grid;gap:10px;}
.footer-links a{font-size:14px;color:rgba(201,195,226,.82);transition:color .2s ease;}
.footer-links a:hover{color:var(--accent);}
.footer-contact{display:grid;gap:10px;font-size:14px;color:rgba(201,195,226,.82);line-height:1.7;}
.footer-contact strong{color:#fff;font-weight:600;}
.footer-bottom{
  margin-top:40px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-direction:column;gap:8px;
  font-size:13px;color:rgba(201,195,226,.62);
}
@media (min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;}}

/* ---------- Mobile tabbar ---------- */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:flex;align-items:stretch;
  height:calc(56px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  box-shadow:0 -6px 22px rgba(20,16,43,.06);
}
@media (min-width:1024px){.mobile-tabbar{display:none;}}
.tab-item{
  flex:1;position:relative;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--ink-400);font-weight:500;
  transition:color .2s ease;
}
.tab-item i{font-size:18px;}
.tab-item::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand-600),var(--accent));
  opacity:0;transition:opacity .2s ease;
}
.tab-item.is-active{color:var(--brand-700);font-weight:700;}
.tab-item.is-active::before{opacity:1;}

/* ---------- Misc ---------- */
.divider{height:1px;background:var(--line);margin:0;}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;}

/* roulang page: category3 */
:root{
  --brand-600:#6C3BFF;
  --brand-700:#5222D9;
  --brand-050:#F1ECFF;
  --accent:#17E0C2;
  --hot:#FF6B3D;
  --ink-900:#14102B;
  --ink-600:#4A4468;
  --ink-400:#8B85A6;
  --bg:#F8F7FC;
  --card:#FFFFFF;
  --line:#E9E6F5;
  --dark:#14102B;
  --dark-2:#241B4A;
  --radius-sm:12px;
  --radius-md:16px;
  --radius-lg:20px;
  --radius-xl:24px;
  --radius-2xl:32px;
  --shadow-card:0 1px 2px rgba(20,16,43,.04), 0 12px 32px rgba(108,59,255,.08);
  --shadow-hover:0 2px 6px rgba(20,16,43,.06), 0 20px 44px rgba(108,59,255,.16);
  --ease:200ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  background:var(--bg);
  color:var(--ink-900);
  line-height:1.7;
  font-size:16px;
  padding-bottom:76px;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container-x{padding:0 40px}}
.num{font-variant-numeric:tabular-nums;letter-spacing:-.02em}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  height:72px;display:flex;align-items:center;
  background:rgba(248,247,252,.92);
  border-bottom:1px solid transparent;
  transition:height var(--ease),background var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.site-header.is-scrolled{
  height:60px;
  background:rgba(255,255,255,.88);
  backdrop-filter:saturate(150%) blur(8px);
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px rgba(20,16,43,.06);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:var(--ink-900)}
.brand-mark{
  width:36px;height:36px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-700));
  color:#fff;font-size:14px;font-weight:800;letter-spacing:.02em;
}
.brand-text{font-size:17px;letter-spacing:.01em}
.desktop-nav{display:none;align-items:center;gap:4px}
@media (min-width:1024px){.desktop-nav{display:flex}}
.nav-link{
  padding:8px 14px;border-radius:999px;font-size:14.5px;color:var(--ink-600);
  transition:color var(--ease),background var(--ease);
}
.nav-link:hover{background:var(--brand-050);color:var(--brand-700)}
.nav-link.is-active{background:var(--brand-050);color:var(--brand-700);font-weight:600}
.header-cta{height:40px;padding:0 16px;font-size:14px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-primary{
  background:var(--brand-600);color:#fff;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.24),0 8px 20px rgba(108,59,255,.22);
}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink-900)}
.btn-ghost:hover{background:var(--brand-050);border-color:var(--brand-600);color:var(--brand-700)}
.btn-on-dark{background:#fff;color:var(--dark);}
.btn-on-dark:hover{background:var(--brand-050);color:var(--brand-700)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand-700);font-weight:600;font-size:14.5px}
.link-arrow i{transition:transform var(--ease)}
.link-arrow:hover i{transform:translateX(4px)}

/* ---------- pills / badges ---------- */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:999px;font-size:13.5px;font-weight:600;
  background:var(--brand-050);color:var(--brand-700);
}
.pill-hot{background:#FFF0EA;color:var(--hot)}
.stat-badge{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius-md);padding:18px;display:flex;flex-direction:column;gap:6px;
}
.stat-badge .stat-num{font-size:34px;font-weight:800;line-height:1.1;color:var(--accent)}
.stat-badge .stat-label{font-size:13px;color:rgba(255,255,255,.72)}
.dot{width:4px;height:4px;border-radius:50%;background:var(--ink-400);display:inline-block}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:48px 0 40px}
.hero::before{
  content:"";position:absolute;width:520px;height:520px;left:-140px;top:-180px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,59,255,.18),rgba(108,59,255,0) 70%);
}
.hero::after{
  content:"";position:absolute;width:460px;height:460px;right:-160px;top:120px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,224,194,.16),rgba(23,224,194,0) 70%);
}
.hero-grid{position:relative;z-index:1;display:grid;gap:36px;align-items:center}
@media (min-width:1024px){
  .hero{padding:64px 0 56px}
  .hero-grid{grid-template-columns:1.05fr .95fr;gap:56px}
}
.hero-copy .pill{margin-bottom:18px}
.hero h1{
  font-size:clamp(28px,4.4vw,46px);font-weight:800;line-height:1.2;letter-spacing:-.01em;
}
.hero-sub{margin-top:16px;font-size:17px;color:var(--ink-600);max-width:34ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.trust-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:22px;font-size:13.5px;color:var(--ink-400)}
.trust-row li{display:inline-flex;align-items:center;gap:10px}
.trust-row li+li::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--ink-400);display:inline-block}
.hero-media{position:relative;border-radius:var(--radius-xl);background:#EFEDF8}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-xl)}
.hero-tag{
  position:absolute;top:16px;left:16px;background:#fff;color:var(--brand-700);
  font-size:13px;font-weight:600;padding:6px 12px;border-radius:999px;
  box-shadow:0 6px 16px rgba(20,16,43,.12);
}
.hero-badge{
  position:absolute;right:16px;bottom:16px;background:#fff;border-radius:var(--radius-md);
  padding:12px 16px;display:flex;align-items:baseline;gap:8px;
  box-shadow:0 12px 28px rgba(20,16,43,.14);
}
.hero-badge .num{font-size:26px;font-weight:800;color:var(--brand-600)}
.hero-badge .lbl{font-size:12.5px;color:var(--ink-600)}

/* ---------- chip nav ---------- */
.chip-nav-wrap{padding-top:8px}
.chip-nav{
  display:flex;gap:10px;overflow-x:auto;padding:6px 0 16px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.chip-nav::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:14px;color:var(--ink-600);transition:all var(--ease);
}
.chip:hover{border-color:var(--brand-600);color:var(--brand-700);background:var(--brand-050)}
.chip i{color:var(--brand-600);font-size:13px}

/* ---------- sections ---------- */
.section{padding:48px 0}
@media (min-width:1024px){.section{padding:72px 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px}
.section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;letter-spacing:-.01em}
.section-head p{margin-top:10px;color:var(--ink-600);font-size:15px;max-width:62ch}
.h2-bar{display:inline-block;width:4px;height:22px;border-radius:2px;background:var(--brand-600);margin-right:10px;vertical-align:-3px}

/* ---------- compare cards ---------- */
.compare-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media (min-width:768px){.compare-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}}
.compare-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px;box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(108,59,255,.22)}
.compare-card h3{font-size:18px;font-weight:700;display:flex;align-items:center;gap:10px}
.compare-card h3 i{font-size:15px;color:var(--brand-600)}
.compare-card .card-note{margin-top:8px;font-size:14px;color:var(--ink-600)}
.check-list{margin-top:18px}
.check-list li{
  display:flex;gap:10px;align-items:flex-start;
  padding:12px 0;font-size:14.5px;color:var(--ink-600);
  border-top:1px dashed var(--line);
}
.check-list li:first-child{border-top:0;padding-top:6px}
.check-list i{color:var(--accent);font-size:15px;margin-top:4px;flex:0 0 auto}
.compare-card.is-alt .check-list i{color:var(--brand-600)}
.compare-card.is-alt{border-color:rgba(108,59,255,.28)}

/* ---------- rhythm ---------- */
.rhythm-grid{display:grid;gap:24px}
@media (min-width:1024px){.rhythm-grid{grid-template-columns:7fr 5fr;align-items:start}}
.step-grid{display:grid;gap:16px;grid-template-columns:1fr}
@media (min-width:640px){.step-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.step-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:22px;box-shadow:var(--shadow-card);transition:transform var(--ease),box-shadow var(--ease);
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.step-no{
  width:32px;height:32px;border-radius:10px;background:var(--brand-050);color:var(--brand-600);
  display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;margin-bottom:14px;
}
.step-card h3{font-size:16.5px;font-weight:700}
.step-card p{margin-top:8px;font-size:14px;color:var(--ink-600)}
.rhythm-media{background:#EFEDF8;border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow-card)}
.rhythm-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.rhythm-media .media-cap{padding:16px 20px;background:#fff;font-size:13.5px;color:var(--ink-600)}
.rhythm-media .media-cap strong{color:var(--ink-900)}

/* ---------- dark stats ---------- */
.dark-panel{
  position:relative;border-radius:var(--radius-2xl);overflow:hidden;background:var(--dark);
  padding:32px;
}
@media (min-width:1024px){.dark-panel{padding:48px}}
.dark-panel::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;opacity:.18;
}
.dark-panel > *{position:relative;z-index:1}
.dark-panel h2{color:#fff;font-size:clamp(22px,2.6vw,30px);font-weight:800}
.dark-panel .panel-sub{margin-top:10px;color:rgba(255,255,255,.72);font-size:15px;max-width:56ch}
.panel-grid{display:grid;gap:28px;margin-top:28px}
@media (min-width:1024px){.panel-grid{grid-template-columns:1.1fr .9fr;gap:40px}}
.stat-grid{display:grid;gap:14px;grid-template-columns:repeat(2,minmax(0,1fr))}
@media (min-width:640px){.stat-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media (min-width:1024px){.stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.quote-list{display:grid;gap:16px}
.quote-item{
  display:flex;gap:14px;align-items:flex-start;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius-md);padding:18px;
}
.quote-avatar{
  width:40px;height:40px;border-radius:50%;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:rgba(23,224,194,.18);color:var(--accent);font-size:16px;
}
.quote-item p{color:#fff;font-size:15px}
.quote-item span{display:block;margin-top:6px;font-size:12.5px;color:rgba(255,255,255,.62)}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:880px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  overflow:hidden;transition:background var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.faq-item.is-open{background:var(--brand-050);border-color:rgba(108,59,255,.28);box-shadow:inset 3px 0 0 var(--brand-600)}
.faq-q{margin:0}
.faq-q button{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;font-size:16px;font-weight:600;color:var(--ink-900);
}
.faq-q button i{color:var(--brand-600);transition:transform var(--ease);flex:0 0 auto}
.faq-item.is-open .faq-q button i{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms ease}
.faq-a p{padding:0 20px 20px;font-size:14.5px;color:var(--ink-600)}

/* ---------- cta ---------- */
.cta-card{
  border-radius:var(--radius-2xl);padding:32px;
  background:linear-gradient(135deg,#14102B 0%,#241B4A 58%,#5222D9 100%);
  display:grid;gap:26px;
}
@media (min-width:1024px){.cta-card{grid-template-columns:1fr 1fr;align-items:center;padding:48px}}
.cta-card h2{color:#fff;font-size:clamp(22px,2.6vw,30px);font-weight:800}
.cta-card .cta-sub{margin-top:12px;color:rgba(255,255,255,.76);font-size:15px;max-width:48ch}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.cta-points span{
  display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:999px;
  background:rgba(255,255,255,.1);color:#fff;font-size:13px;border:1px solid rgba(255,255,255,.16);
}
.sub-form{display:flex;flex-direction:column;gap:12px}
@media (min-width:520px){.sub-form{flex-direction:row;align-items:center}}
.sub-form input{
  flex:1 1 auto;height:48px;padding:0 16px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:#fff;font-size:15px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.sub-form input::placeholder{color:var(--ink-400)}
.sub-form input:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 4px var(--brand-050)}
.sub-form .btn{flex:0 0 auto}
.form-hint{margin-top:12px;font-size:12.5px;color:rgba(255,255,255,.6)}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.78);margin-top:64px;padding:56px 0 28px}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px}
.footer-intro{margin-top:14px;font-size:14px;color:rgba(255,255,255,.66);max-width:36ch}
.socials{display:flex;gap:10px;margin-top:18px}
.socials a{
  width:38px;height:38px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.08);color:rgba(255,255,255,.8);
  transition:background var(--ease),color var(--ease),transform var(--ease);
}
.socials a:hover{background:rgba(23,224,194,.16);color:var(--accent);transform:translateY(-2px)}
.footer-title{margin:0 0 14px;font-size:15px;font-weight:700;color:#fff}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.7);transition:color var(--ease)}
.footer-links a:hover{color:var(--accent)}
.footer-contact p{font-size:14px;color:rgba(255,255,255,.7);margin-bottom:10px}
.footer-contact strong{color:#fff;font-weight:600}
.footer-bottom{
  margin-top:40px;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:13px;color:rgba(255,255,255,.55);
}

/* ---------- mobile tab ---------- */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:60;
  display:flex;align-items:stretch;height:56px;
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(255,255,255,.97);
  border-top:1px solid var(--line);
  box-shadow:0 -6px 20px rgba(20,16,43,.06);
}
.mobile-tab a{
  position:relative;flex:1 1 0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--ink-400);transition:color var(--ease);
}
.mobile-tab a i{font-size:18px}
.mobile-tab a.is-active{color:var(--brand-600)}
.mobile-tab a.is-active::before{
  content:"";position:absolute;top:0;width:24px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand-600),var(--accent));
}
@media (min-width:768px){
  .mobile-tab{display:none}
  body{padding-bottom:0}
}