/* roulang page: index */
:root{
  --brand:#1F63E8;
  --brand-dark:#14459F;
  --brand-soft:#E8F0FF;
  --teal:#12B3A6;
  --orange:#FF7A2E;
  --bg:#FFFFFF;
  --bg-alt:#F4F7FC;
  --bg-tint:#EDF3FE;
  --line:#E2E9F4;
  --text:#0F1B2E;
  --text-2:#4E6076;
  --text-3:#8C9CB2;
  --ok:#16A34A;
  --warn:#F59E0B;
  --err:#DC2626;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(15,27,46,.04),0 8px 24px rgba(15,27,46,.06);
  --sh-hover:0 12px 32px rgba(15,27,46,.10);
  --sh-nav:0 6px 18px rgba(15,27,46,.06);
  --t:200ms ease-out;
  --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea,select{font-family:inherit;font-size:15px;color:var(--text);}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
body.no-scroll{overflow:hidden;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section--alt{background:var(--bg-alt);}
.section--tint{background:linear-gradient(180deg,var(--bg-tint),#FFFFFF);}
.reading{max-width:780px;margin:0 auto;}

h1{font-size:clamp(28px,4.2vw,44px);font-weight:700;line-height:1.25;letter-spacing:-.01em;}
h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;letter-spacing:-.005em;}
h3{font-size:20px;font-weight:600;line-height:1.5;}
h4{font-size:17px;font-weight:600;line-height:1.6;}
p{color:var(--text-2);}
.lead{font-size:17px;color:var(--text-2);}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t);
}
.site-header.is-scrolled{box-shadow:var(--sh-nav);}
.nav-wrap{
  display:flex;align-items:center;gap:32px;
  height:72px;
}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo__mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(140deg,var(--brand),#3E8BFF);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:16px;font-weight:700;letter-spacing:-.02em;
}
.logo__text{display:flex;flex-direction:column;line-height:1.15;}
.logo__text b{font-size:17px;font-weight:700;color:var(--text);letter-spacing:.01em;}
.logo__text span{font-size:11.5px;color:var(--text-3);letter-spacing:.06em;}
.logo:hover .logo__text b{color:var(--brand);}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-menu a{
  position:relative;
  display:inline-flex;align-items:center;
  height:44px;padding:0 14px;
  font-size:15px;color:var(--text-2);
  border-radius:var(--r-sm);
}
.nav-menu a:hover{color:var(--brand);background:var(--brand-soft);}
.nav-menu a.is-active{color:var(--brand);font-weight:600;}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:50%;bottom:4px;transform:translateX(-50%);
  width:20px;height:2px;border-radius:2px;background:var(--brand);
}
.nav-cta{margin-left:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  align-items:center;justify-content:center;margin-left:auto;
  border:1px solid var(--line);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;
  font-size:15px;font-weight:600;border-radius:var(--r-sm);
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
  border:1px solid transparent;
}
.btn--primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(31,99,232,.20);}
.btn--primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);}
.btn--primary:active{background:var(--brand-dark);transform:translateY(0);}
.btn--ghost{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn--ghost:hover{background:var(--brand-soft);color:var(--brand-dark);}
.btn--lg{min-height:52px;padding:0 30px;font-size:16px;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;}
.arrow-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);
}
.arrow-link::after{content:"→";transition:transform var(--t);}
.arrow-link:hover::after{transform:translateX(4px);}

/* 标签 */
.tag{
  display:inline-flex;align-items:center;
  height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.tag--soft{background:var(--brand-soft);color:var(--brand-dark);}
.tag--teal{background:rgba(18,179,166,.12);color:#0B7C72;}
.tag--ok{background:rgba(22,163,74,.12);color:var(--ok);}
.tag--warn{background:rgba(245,158,11,.14);color:#A9640A;}
.tag--orange{background:rgba(255,122,46,.14);color:#C24E0D;}

/* Hero */
.hero{
  position:relative;
  padding:88px 0 72px;
  background:
    radial-gradient(900px 420px at 88% -10%,rgba(31,99,232,.10),transparent 70%),
    linear-gradient(180deg,var(--bg-tint),#FFFFFF 70%);
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(31,99,232,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(31,99,232,.055) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(680px 360px at 78% 18%,#000,transparent 72%);
  -webkit-mask-image:radial-gradient(680px 360px at 78% 18%,#000,transparent 72%);
  pointer-events:none;
}
.hero__grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:center;
}
.hero__eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);
  font-size:12.5px;font-weight:600;color:var(--text-2);
  box-shadow:var(--sh-card);margin-bottom:22px;
}
.hero__eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--teal);display:block;}
.hero h1{margin-bottom:18px;}
.hero__sub{font-size:17px;color:var(--text-2);margin-bottom:28px;max-width:520px;}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:16px;}
.hero__note{font-size:13px;color:var(--text-3);}
.hero__visual{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--sh-card);
  aspect-ratio:16/9;background:var(--bg-tint);
}
.hero__visual img{width:100%;height:100%;object-fit:cover;}
.hero__visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(200deg,rgba(31,99,232,.06),rgba(255,255,255,0) 60%);
}
.hero__badge{
  position:absolute;right:16px;bottom:16px;z-index:2;
  background:#fff;border-radius:var(--r-sm);
  padding:10px 14px;box-shadow:var(--sh-card);
  border:1px solid var(--line);
}
.hero__badge b{display:block;font-size:18px;font-weight:700;color:var(--brand);}
.hero__badge span{font-size:12px;color:var(--text-3);}
.metrics{
  position:relative;z-index:1;
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  margin-top:56px;padding-top:32px;border-top:1px solid var(--line);
}
.metric b{display:block;font-size:clamp(22px,2.6vw,30px);font-weight:700;color:var(--brand);line-height:1.2;}
.metric span{display:block;font-size:13px;color:var(--text-3);margin-top:6px;}

/* 区块标题组 */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;}
.sec-head__label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--brand);
  text-transform:uppercase;margin-bottom:10px;
}
.sec-head__label::before{content:"";width:16px;height:2px;border-radius:2px;background:var(--brand);}
.sec-head p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:640px;}
h2.with-bar{position:relative;padding-left:16px;}
h2.with-bar::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--brand);
}

/* 玩法：交替图文 */
.feature{
  display:grid;grid-template-columns:12fr;gap:24px;
}
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  padding:36px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-card);transition:transform var(--t),box-shadow var(--t);
}
.feature-row:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.feature-row--reverse .feature-row__media{order:-1;}
.feature-row__num{
  width:44px;height:44px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-weight:700;font-size:15px;
  letter-spacing:.02em;margin-bottom:18px;
}
.feature-row h3{margin-bottom:12px;font-size:22px;}
.feature-row p{margin-bottom:18px;}
.feature-row__media{
  border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:16/10;background:var(--bg-tint);
}
.feature-row__media img{width:100%;height:100%;object-fit:cover;}

/* 奖励卡 */
.reward-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-card);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.reward-card{overflow:hidden;position:relative;display:flex;flex-direction:column;}
.reward-card__media{aspect-ratio:3/2;background:var(--bg-tint);overflow:hidden;}
.reward-card__media img{width:100%;height:100%;object-fit:cover;}
.reward-card__badge{position:absolute;left:14px;top:14px;}
.reward-card__corner{
  position:absolute;right:14px;top:14px;
  height:24px;padding:0 10px;border-radius:var(--r-pill);
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:600;color:#C24E0D;
  background:#FFF3E9;border:1px solid rgba(255,122,46,.5);
}
.reward-card__body{padding:20px;flex:1;display:flex;flex-direction:column;}
.reward-card__body h3{font-size:19px;margin-bottom:8px;}
.reward-card__body p{font-size:14.5px;margin-bottom:16px;}
.reward-card__foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}

/* 进度 */
.progress-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-card);padding:36px;
}
.progress-row{
  display:grid;grid-template-columns:180px 1fr 64px 92px;
  align-items:center;gap:20px;padding:16px 0;border-bottom:1px solid var(--line);
}
.progress-row:last-child{border-bottom:0;}
.progress-row__name{font-size:15px;font-weight:600;color:var(--text);}
.track{height:8px;border-radius:var(--r-pill);background:var(--brand-soft);overflow:hidden;}
.track i{display:block;height:100%;border-radius:var(--r-pill);background:var(--teal);}
.progress-row__num{font-size:15px;font-weight:700;color:var(--text);text-align:right;}
.progress-row__state{justify-self:end;}

/* CTA */
.cta-card{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:40px;border-radius:var(--r-lg);border:1px solid var(--line);
  background:linear-gradient(120deg,var(--bg-tint),#FFFFFF);
  box-shadow:var(--sh-card);
}
.cta-card h2{margin-bottom:10px;font-size:clamp(20px,2.2vw,26px);}
.cta-card p{font-size:15px;max-width:620px;}
.cta-card__btn{flex:0 0 auto;}

/* 资讯卡 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{overflow:hidden;display:flex;flex-direction:column;}
.news-card__media{aspect-ratio:16/9;background:var(--bg-tint);overflow:hidden;}
.news-card__media img{width:100%;height:100%;object-fit:cover;}
.news-card__body{padding:20px;display:flex;flex-direction:column;flex:1;}
.news-card__body .tag{align-self:flex-start;margin-bottom:12px;}
.news-card__title{
  font-size:17px;font-weight:600;line-height:1.6;margin-bottom:10px;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__title a{color:inherit;}
.news-card__title a:hover{color:var(--brand);}
.news-card__desc{
  font-size:14px;color:var(--text-2);margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}
.empty-state{
  text-align:center;padding:56px 24px;border:1px dashed var(--line);
  border-radius:var(--r-md);background:#fff;
}
.empty-state__icon{
  width:52px;height:52px;margin:0 auto 16px;border-radius:50%;
  background:var(--bg-tint);display:flex;align-items:center;justify-content:center;
  color:var(--text-3);font-size:20px;font-weight:700;
}
.empty-state p{font-size:15px;margin-bottom:12px;}

/* FAQ */
.faq-list{max-width:780px;margin:0 auto;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;text-align:left;font-size:17px;font-weight:600;color:var(--text);
  transition:color var(--t);
}
.faq-q:hover{color:var(--brand);}
.faq-q__icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:600;color:var(--brand);position:relative;
}
.faq-q__icon::before,.faq-q__icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;transition:opacity var(--t),transform var(--t);
}
.faq-q__icon::before{width:11px;height:2px;}
.faq-q__icon::after{width:2px;height:11px;}
.faq-item.is-open .faq-q__icon::after{opacity:0;transform:scaleY(.2);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height 220ms ease-out;
}
.faq-a p{padding:0 4px 24px;font-size:15px;max-width:680px;}

/* 页脚 */
.site-footer{background:var(--bg-alt);border-top:1px solid var(--line);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand p{font-size:14px;margin:16px 0 20px;max-width:320px;}
.qr{
  width:104px;height:104px;border-radius:8px;background:#fff;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12px;color:var(--text-3);padding:10px;line-height:1.4;
}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text);}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--brand);}
.footer-col li span{font-size:14px;color:var(--text-2);}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);
  padding:24px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-bottom span{color:var(--text-3);}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:90;background:#fff;
  display:flex;flex-direction:column;
  transform:translateY(-100%);opacity:0;visibility:hidden;
  transition:transform 260ms ease-out,opacity 200ms ease-out,visibility 200ms;
}
.drawer.is-open{transform:translateY(0);opacity:1;visibility:visible;}
.drawer__top{
  display:flex;align-items:center;justify-content:space-between;
  height:60px;padding:0 18px;border-bottom:1px solid var(--line);flex:0 0 auto;
}
.drawer__close{
  width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--text-2);
}
.drawer__nav{padding:12px 18px;display:flex;flex-direction:column;flex:1;overflow-y:auto;}
.drawer__nav a{
  font-size:18px;color:var(--text);padding:16px 4px;border-bottom:1px solid var(--line);
}
.drawer__nav a.is-active{color:var(--brand);font-weight:600;}
.drawer__foot{padding:18px;border-top:1px solid var(--line);flex:0 0 auto;}
.drawer__foot .btn{width:100%;}

/* 响应式 */
@media (max-width:1279px){
  .container{padding:0 24px;}
  .hero__grid{gap:40px;}
}
@media (max-width:1023px){
  .nav-menu,.nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .section{padding:72px 0;}
  .hero{padding:72px 0 56px;}
  .hero__grid{grid-template-columns:1fr;gap:36px;}
  .hero__sub{max-width:none;}
  .metrics{grid-template-columns:repeat(2,1fr);gap:20px;margin-top:40px;}
  .reward-grid,.news-grid{grid-template-columns:repeat(2,1fr);}
  .feature-row{grid-template-columns:1fr;gap:28px;padding:28px;}
  .feature-row--reverse .feature-row__media{order:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .progress-row{grid-template-columns:150px 1fr 56px;gap:16px;}
  .progress-row__state{display:none;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .hero{padding:56px 0 44px;}
  .nav-wrap{height:60px;}
  .reward-grid,.news-grid{grid-template-columns:1fr;}
  .cta-card{flex-direction:column;align-items:flex-start;padding:28px;}
  .cta-card__btn{width:100%;}
  .cta-card__btn .btn{width:100%;}
  .progress-panel{padding:24px;}
  .progress-row{grid-template-columns:1fr;gap:10px;}
  .progress-row__num{text-align:left;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .hero__badge{right:12px;bottom:12px;padding:8px 12px;}
}
@media (max-width:480px){
  .container{padding:0 16px;}
  .hero__grid{gap:28px;}
  .hero__actions{flex-direction:column;align-items:stretch;}
  .hero__actions .btn{width:100%;}
  .metrics{grid-template-columns:1fr 1fr;gap:16px;}
  .feature-row{padding:22px;}
}

/* roulang page: article */
:root{
  --c-primary:#1F63E8;
  --c-primary-d:#14459F;
  --c-primary-l:#E8F0FF;
  --c-primary-xl:#EDF3FE;
  --c-teal:#12B3A6;
  --c-orange:#FF7A2E;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F4F7FC;
  --c-line:#E2E9F4;
  --c-t1:#0F1B2E;
  --c-t2:#4E6076;
  --c-t3:#8C9CB2;
  --c-ok:#16A34A;
  --c-warn:#F59E0B;
  --c-err:#DC2626;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:10px;
  --sh-1:0 1px 2px rgba(15,27,46,.04),0 8px 24px rgba(15,27,46,.06);
  --sh-2:0 12px 32px rgba(15,27,46,.10);
  --sh-nav:0 6px 18px rgba(15,27,46,.06);
  --t:200ms ease-out;
  --gap-block:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-t1);
  background:var(--c-bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t),background var(--t),border-color var(--t),box-shadow var(--t),transform var(--t);}
a:hover{color:var(--c-primary-d);}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1{font-size:clamp(28px,4.2vw,44px);line-height:1.25;font-weight:700;letter-spacing:-.01em;}
h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;font-weight:700;}
h3{font-size:20px;line-height:1.5;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}

.container{max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background var(--t),color var(--t),box-shadow var(--t),transform var(--t),border-color var(--t);
}
.btn--primary{background:var(--c-primary);color:#fff;box-shadow:0 1px 2px rgba(31,99,232,.18);}
.btn--primary:hover{background:var(--c-primary-d);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(20,69,159,.22);}
.btn--primary:active{transform:translateY(0);box-shadow:none;}
.btn--ghost{background:#fff;color:var(--c-primary);border:1px solid var(--c-primary);}
.btn--ghost:hover{background:var(--c-primary-l);color:var(--c-primary-d);border-color:var(--c-primary-d);}
.btn--lg{height:52px;padding:0 30px;font-size:16px;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary);}
.link-arrow::after{content:"→";transition:transform var(--t);}
.link-arrow:hover::after{transform:translateX(4px);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--t);
}
.site-header.is-scrolled{box-shadow:var(--sh-nav);border-bottom-color:transparent;}
.nav-wrap{display:flex;align-items:center;gap:28px;height:72px;}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;}
.logo__mark{
  display:flex;align-items:center;justify-content:center;
  height:40px;padding:0 12px;border-radius:var(--r-sm);
  background:var(--c-primary);color:#fff;font-size:15px;font-weight:700;letter-spacing:.02em;
}
.logo__text{display:flex;flex-direction:column;line-height:1.2;}
.logo__text b{font-size:16px;font-weight:700;color:var(--c-t1);}
.logo__text span{font-size:12px;color:var(--c-t3);letter-spacing:.04em;}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-menu a{
  position:relative;padding:10px 14px;border-radius:var(--r-sm);
  font-size:15px;color:var(--c-t2);
}
.nav-menu a:hover{color:var(--c-primary);background:var(--c-primary-l);}
.nav-menu a.is-active{color:var(--c-primary);font-weight:600;}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:20px;height:2px;border-radius:2px;background:var(--c-primary);
}
.nav-cta{margin-left:8px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  margin-left:auto;position:relative;
}
.nav-toggle span,.nav-toggle::before,.nav-toggle::after{
  content:"";position:absolute;left:12px;width:20px;height:2px;border-radius:2px;background:var(--c-t1);
  transition:transform var(--t),opacity var(--t);
}
.nav-toggle::before{top:15px;}
.nav-toggle span{top:21px;}
.nav-toggle::after{top:27px;}
.nav-toggle.is-open::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span{opacity:0;}
.nav-toggle.is-open::after{transform:translateY(-6px) rotate(-45deg);}

.drawer{
  position:fixed;inset:0;background:#fff;z-index:80;
  padding:24px 20px;display:flex;flex-direction:column;
  transform:translateX(100%);visibility:hidden;
  transition:transform var(--t),visibility var(--t);
}
.drawer.is-open{transform:translateX(0);visibility:visible;}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer__close{width:44px;height:44px;border-radius:var(--r-sm);font-size:24px;line-height:1;color:var(--c-t2);}
.drawer__close:hover{background:var(--c-bg-alt);color:var(--c-t1);}
.drawer__nav{display:flex;flex-direction:column;gap:4px;}
.drawer__nav a{
  padding:14px 12px;font-size:18px;color:var(--c-t1);border-radius:var(--r-sm);
}
.drawer__nav a:hover,.drawer__nav a.is-active{background:var(--c-primary-l);color:var(--c-primary);}
.drawer__foot{margin-top:auto;padding-top:20px;}

/* ---------- 文章头 ---------- */
.article-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,var(--c-primary-xl) 0%,#FFFFFF 100%);
  border-bottom:1px solid var(--c-line);
  padding:40px 0 48px;
}
.article-hero::before{
  content:"";position:absolute;inset:0;opacity:.5;pointer-events:none;
  background-image:linear-gradient(rgba(31,99,232,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(31,99,232,.05) 1px,transparent 1px);
  background-size:36px 36px;
}
.article-hero .container{position:relative;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-t3);margin-bottom:22px;}
.crumbs a{color:var(--c-t3);}
.crumbs a:hover{color:var(--c-primary);}
.crumbs .sep{color:#C6D2E4;}
.crumbs .current{color:var(--c-t3);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:var(--c-primary-l);color:var(--c-primary);
}
.badge--teal{background:rgba(18,179,166,.12);color:#0E8C82;}
.badge--orange{background:rgba(255,122,46,.14);color:#D65F14;}
.badge--soft{background:var(--c-bg-alt);color:var(--c-t2);}
.article-hero h1{margin:16px 0 18px;max-width:900px;}
.meta-line{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--c-t3);}
.meta-line .divider{width:1px;height:12px;background:var(--c-line);display:inline-block;}

/* ---------- 布局 ---------- */
.article-main{padding:56px 0 var(--gap-block);}
.article-layout{display:grid;grid-template-columns:8fr 4fr;gap:24px;align-items:start;}
.article-col{min-width:0;}

/* ---------- 正文排版 ---------- */
.article-body{
  max-width:780px;font-size:17px;line-height:1.9;color:var(--c-t2);
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:40px 44px;box-shadow:var(--sh-1);
}
.article-body > * + *{margin-top:22px;}
.article-body p{margin:0;color:var(--c-t2);}
.article-body h2{
  position:relative;padding-left:16px;margin-top:40px;margin-bottom:16px;
  font-size:clamp(20px,2.2vw,25px);line-height:1.4;font-weight:700;color:var(--c-t1);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:2px;background:var(--c-primary);
}
.article-body h3{margin-top:28px;margin-bottom:12px;font-size:19px;font-weight:600;color:var(--c-t1);}
.article-body h4{margin-top:22px;margin-bottom:10px;font-size:17px;font-weight:600;color:var(--c-t1);}
.article-body ul,.article-body ol{padding-left:4px;}
.article-body ul li,.article-body ol li{position:relative;padding-left:20px;margin-bottom:10px;color:var(--c-t2);}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:14px;width:6px;height:6px;border-radius:50%;background:var(--c-primary);
}
.article-body ol{counter-reset:olc;}
.article-body ol li{counter-increment:olc;}
.article-body ol li::before{
  content:counter(olc);position:absolute;left:0;top:2px;
  font-size:13px;font-weight:600;color:var(--c-primary);
}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;background:var(--c-bg-alt);
  border-left:3px solid var(--c-primary);border-radius:var(--r-sm);
  color:var(--c-t2);font-size:16px;
}
.article-body blockquote p{margin:0;}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--c-primary-d);}
.article-body img{border-radius:12px;margin:26px 0 10px;width:100%;height:auto;background:var(--c-primary-xl);}
.article-body figcaption,.article-body .caption{display:block;text-align:center;font-size:13px;color:var(--c-t3);margin-bottom:20px;}
.article-body table{
  width:100%;border-collapse:separate;border-spacing:0;margin:26px 0;
  border:1px solid var(--c-line);border-radius:12px;overflow:hidden;font-size:15px;
}
.article-body th,.article-body td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--c-line);}
.article-body th{background:var(--c-bg-alt);color:var(--c-t1);font-weight:600;}
.article-body tr:last-child td{border-bottom:0;}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:32px 0;}

/* ---------- 空态 ---------- */
.empty-state{
  max-width:780px;text-align:center;padding:64px 32px;
  background:var(--c-bg-alt);border:1px dashed var(--c-line);border-radius:var(--r-lg);
}
.empty-state .empty-icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:50%;
  background:var(--c-primary-xl);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:26px;font-weight:700;
}
.empty-state h2{font-size:20px;margin-bottom:10px;}
.empty-state p{color:var(--c-t2);margin-bottom:20px;}

/* ---------- 侧栏 ---------- */
.sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--sh-1);
}
.side-card h4{
  font-size:15px;font-weight:700;color:var(--c-t1);margin-bottom:14px;
  display:flex;align-items:center;gap:8px;
}
.side-card h4::before{content:"";width:4px;height:15px;border-radius:2px;background:var(--c-primary);}
.toc-list li{margin-bottom:2px;}
.toc-list a{
  display:block;padding:8px 10px;border-radius:8px;
  font-size:14px;color:var(--c-t2);line-height:1.5;
}
.toc-list a:hover{background:var(--c-primary-l);color:var(--c-primary);}
.toc-list a.is-current{background:var(--c-primary-l);color:var(--c-primary);font-weight:600;}
.toc-empty{font-size:14px;color:var(--c-t3);}
.side-cta{
  background:linear-gradient(180deg,var(--c-primary-xl) 0%,#FFFFFF 100%);
  border:1px solid var(--c-line);border-radius:var(--r-md);padding:24px;box-shadow:var(--sh-1);
}
.side-cta h4{font-size:17px;font-weight:700;margin-bottom:8px;color:var(--c-t1);}
.side-cta p{font-size:14px;color:var(--c-t2);margin-bottom:16px;}
.side-cta .btn{width:100%;}
.rel-list li + li{margin-top:10px;padding-top:10px;border-top:1px solid var(--c-line);}
.rel-list a{display:flex;gap:12px;align-items:flex-start;color:var(--c-t1);}
.rel-list img{width:64px;height:44px;object-fit:cover;border-radius:8px;background:var(--c-primary-xl);flex:none;}
.rel-list .rel-title{font-size:14px;line-height:1.5;font-weight:600;color:var(--c-t1);}
.rel-list a:hover .rel-title{color:var(--c-primary);}
.rel-list .rel-time{display:block;font-size:12px;color:var(--c-t3);margin-top:4px;font-weight:400;}

/* ---------- 文末 ---------- */
.after-article{max-width:780px;margin-top:32px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.pager{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-bottom:28px;}
.pager-card{
  display:block;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:18px 20px;box-shadow:var(--sh-1);
}
.pager-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#D3DEF0;}
.pager-card .pager-label{font-size:13px;color:var(--c-t3);margin-bottom:8px;display:flex;align-items:center;gap:6px;}
.pager-card .pager-title{
  font-size:16px;font-weight:600;color:var(--c-t1);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.pager-card--next{text-align:right;}
.pager-card--next .pager-label{justify-content:flex-end;}
.back-row{margin-top:4px;}

/* ---------- 延伸阅读 ---------- */
.section{padding:var(--gap-block) 0;}
.section--alt{background:var(--c-bg-alt);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;}
.section-head .label{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--c-primary-l);color:var(--c-primary);font-size:12px;font-weight:600;letter-spacing:.02em;margin-bottom:12px;
}
.section-head p{color:var(--c-t2);font-size:15px;margin-top:8px;}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#D3DEF0;}
.card__media{position:relative;aspect-ratio:3/2;background:var(--c-primary-xl);overflow:hidden;}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform var(--t);}
.card:hover .card__media img{transform:scale(1.02);}
.card__body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card__body h3{font-size:17px;font-weight:600;line-height:1.5;color:var(--c-t1);}
.card__body p{font-size:14px;color:var(--c-t2);line-height:1.7;}
.card__foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-t3);}

/* ---------- CTA ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:40px 44px;border-radius:var(--r-lg);border:1px solid var(--c-line);
  background:linear-gradient(180deg,var(--c-primary-xl) 0%,#FFFFFF 100%);
  box-shadow:var(--sh-1);
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);margin-bottom:10px;}
.cta-band p{color:var(--c-t2);font-size:15px;max-width:620px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-bg-alt);border-top:1px solid var(--c-line);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand p{font-size:14px;color:var(--c-t2);margin:16px 0 18px;max-width:320px;}
.footer-brand .logo{margin-bottom:2px;}
.qr{
  width:120px;height:120px;border-radius:8px;background:#fff;border:1px dashed var(--c-line);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:13px;color:var(--c-t3);line-height:1.6;
}
.footer-col h4{font-size:15px;font-weight:700;color:var(--c-t1);margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a,.footer-col ul span{font-size:14px;color:var(--c-t2);}
.footer-col ul a:hover{color:var(--c-primary);}
.footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--c-t3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  :root{--gap-block:72px;}
  .container{padding:0 24px;}
  .nav-menu,.nav-cta{display:none;}
  .nav-toggle{display:block;}
  .article-layout{grid-template-columns:1fr;}
  .sidebar{position:static;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
  .article-body{padding:32px 28px;}
}
@media (max-width:767px){
  :root{--gap-block:56px;}
  body{font-size:15px;}
  .nav-wrap{height:60px;}
  .article-hero{padding:28px 0 36px;}
  .article-main{padding:36px 0 var(--gap-block);}
  .article-body{font-size:16px;line-height:1.85;padding:26px 20px;border-radius:var(--r-md);}
  .card-grid{grid-template-columns:1fr;gap:18px;}
  .pager{grid-template-columns:1fr;}
  .pager-card--next{text-align:left;}
  .pager-card--next .pager-label{justify-content:flex-start;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 24px;}
  .cta-band .btn{width:100%;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .btn{min-height:44px;}
}
@media (max-width:480px){
  .container{padding:0 16px;}
  .crumbs .current{max-width:220px;}
  .article-body{padding:22px 16px;}
  .side-card{padding:18px;}
}

/* roulang page: category1 */
:root{
  --brand:#1F63E8;
  --brand-dark:#14459F;
  --brand-deep:#0F3680;
  --brand-soft:#E8F0FF;
  --teal:#12B3A6;
  --orange:#FF7A2E;
  --bg:#FFFFFF;
  --bg-alt:#F4F7FC;
  --grad-soft:#EDF3FE;
  --line:#E2E9F4;
  --line-strong:#C9DBFB;
  --t1:#0F1B2E;
  --t2:#4E6076;
  --t3:#8C9CB2;
  --ok:#16A34A;
  --warn:#F59E0B;
  --err:#DC2626;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,27,46,.04),0 8px 24px rgba(15,27,46,.06);
  --sh-2:0 12px 32px rgba(15,27,46,.10);
  --sh-nav:0 6px 18px rgba(15,27,46,.06);
  --t:200ms ease-out;
  --header-h:72px;
  --anchor-h:56px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:150px}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--t1);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--brand-dark)}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}
h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35}
h3{font-size:20px;font-weight:600;line-height:1.5;letter-spacing:0}
h4{font-size:17px;font-weight:600;line-height:1.5}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
a:focus-visible,button:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 32px}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t);
}
.site-header.is-scrolled{box-shadow:var(--sh-nav)}
.nav-wrap{position:relative;z-index:80;display:flex;align-items:center;gap:28px;height:var(--header-h)}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--t1)}
.logo:hover{color:var(--t1)}
.logo__mark{
  width:40px;height:40px;border-radius:12px;flex:0 0 40px;
  background:linear-gradient(135deg,var(--brand),#3F82F0);
  color:#fff;font-size:14px;font-weight:700;letter-spacing:.02em;
  display:flex;align-items:center;justify-content:center;
}
.logo__text{display:flex;flex-direction:column;line-height:1.2}
.logo__text b{font-size:16px;font-weight:700;letter-spacing:-.01em}
.logo__text span{font-size:12px;color:var(--t3);font-weight:400;letter-spacing:.02em}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-menu a{
  position:relative;
  padding:10px 14px;border-radius:var(--r-pill);
  font-size:15px;color:var(--t2);
  transition:color var(--t),background-color var(--t);
}
.nav-menu a:hover{color:var(--brand);background:var(--brand-soft)}
.nav-menu a.is-active{color:var(--brand);font-weight:600}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:50%;bottom:2px;
  width:20px;height:2px;border-radius:2px;background:var(--brand);
  transform:translateX(-50%);
}
.nav-cta{margin-left:12px}
.nav-toggle{
  display:none;margin-left:auto;
  width:44px;height:44px;flex:0 0 44px;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  cursor:pointer;align-items:center;justify-content:center;
  transition:border-color var(--t),background-color var(--t);
}
.nav-toggle:hover{border-color:var(--line-strong);background:var(--brand-soft)}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  display:block;width:18px;height:2px;border-radius:2px;background:var(--t1);
  transition:transform var(--t),background-color var(--t),opacity var(--t);
}
.nav-toggle span{position:relative}
.nav-toggle span::before{content:"";position:absolute;top:-6px}
.nav-toggle span::after{content:"";position:absolute;top:6px}
.site-header.is-open .nav-toggle span{background:transparent}
.site-header.is-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg)}
.site-header.is-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;
  border:1px solid transparent;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:background-color var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn--primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(31,99,232,.22)}
.btn--primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(31,99,232,.26)}
.btn--primary:active{background:var(--brand-deep);transform:translateY(0)}
.btn--ghost{background:#fff;color:var(--brand);border-color:var(--line-strong)}
.btn--ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-dark)}
.btn--ghost:active{background:#D8E6FE}
.btn--lg{min-height:52px;padding:0 30px;font-size:16px}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--brand);
}
.link-arrow::after{content:"→";font-size:15px;transition:transform var(--t)}
.link-arrow:hover{color:var(--brand-dark)}
.link-arrow:hover::after{transform:translateX(4px)}

/* ============ 页头横幅 ============ */
.page-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,var(--grad-soft) 0%,#FFFFFF 100%);
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(31,99,232,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(31,99,232,.06) 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 88%);
  mask-image:linear-gradient(180deg,#000 0%,transparent 88%);
}
.hero-grid{
  position:relative;
  display:grid;grid-template-columns:1.12fr 1fr;gap:56px;align-items:center;
  padding:72px 0 56px;
}
.crumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--t3);margin-bottom:18px}
.crumb a{color:var(--t3)}
.crumb a:hover{color:var(--brand)}
.crumb span.sep{color:#C2CEDF}
.crumb .current{color:var(--t2)}
.page-title{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.page-title__main{font-size:clamp(28px,4.2vw,44px);font-weight:700;line-height:1.25;letter-spacing:-.01em}
.page-title__sub{font-size:clamp(14px,1.5vw,17px);font-weight:600;color:var(--t2);letter-spacing:.02em}
.hero-lead{font-size:17px;color:var(--t2);max-width:560px;line-height:1.8}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 28px}
.tag-pill{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:var(--brand-soft);color:var(--brand);
}
.tag-pill--teal{background:#E3F7F5;color:#0E8E84}
.tag-pill--muted{background:#EEF2F8;color:var(--t2)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-note{margin-top:16px;font-size:13px;color:var(--t3)}
.hero-media{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  background:var(--grad-soft);border:1px solid var(--line);box-shadow:var(--sh-1);
}
.hero-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-lg)}
.stat-strip{
  position:relative;
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
  padding:0 0 44px;
}
.stat{display:flex;flex-direction:column;gap:2px;padding-left:16px;border-left:2px solid var(--line-strong)}
.stat b{font-size:22px;font-weight:700;color:var(--brand);line-height:1.3}
.stat span{font-size:13px;color:var(--t3)}

/* ============ 吸顶锚点条 ============ */
.anchor-bar{
  position:sticky;top:var(--header-h);z-index:50;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow var(--t);
}
.anchor-bar.is-stuck{box-shadow:var(--sh-nav)}
.anchor-inner{
  display:flex;align-items:center;gap:28px;
  height:var(--anchor-h);overflow-x:auto;scrollbar-width:none;
}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-inner a{
  position:relative;white-space:nowrap;
  padding:17px 0;font-size:14px;font-weight:600;color:var(--t2);
  border-bottom:2px solid transparent;
  transition:color var(--t),border-color var(--t);
}
.anchor-inner a:hover{color:var(--brand)}
.anchor-inner a.is-current{color:var(--brand);border-bottom-color:var(--brand)}

/* ============ 区块 ============ */
.section{padding:96px 0}
.section--alt{background:var(--bg-alt)}
.section--grad{background:linear-gradient(180deg,#FFFFFF 0%,var(--grad-soft) 100%)}
.section-head{max-width:760px;margin-bottom:32px}
.section-head .tag{
  display:inline-block;margin-bottom:14px;
  padding:5px 12px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.section-head h2{margin-bottom:12px}
.section-head p{color:var(--t2)}

/* ============ 图文模块 ============ */
.feature{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:40px 0;
}
.feature + .feature{border-top:1px dashed var(--line)}
.feature--reverse .feature-body{order:2}
.feature--reverse .feature-media{order:1}
.num-badge{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand);
  border:1px solid var(--line-strong);
  font-size:15px;font-weight:700;letter-spacing:.02em;
  margin-bottom:18px;
}
.feature-body h3{margin-bottom:14px}
.feature-body p{color:var(--t2);margin-bottom:20px}
.feature-media{
  margin:0;border-radius:var(--r-md);overflow:hidden;
  background:var(--grad-soft);border:1px solid var(--line);
  box-shadow:var(--sh-1);
  transition:transform var(--t),box-shadow var(--t);
}
.feature-media:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.feature-media img{width:100%;aspect-ratio:3/2;object-fit:cover}

/* ============ 步骤条 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:8px}
.step{position:relative;padding-right:28px}
.step:not(:last-child)::after{
  content:"";position:absolute;top:23px;left:52px;right:8px;height:2px;
  background:var(--line);
}
.step.is-done:not(:last-child)::after{background:var(--teal);opacity:.45}
.step__dot{
  position:relative;z-index:1;
  width:48px;height:48px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:#fff;border:2px solid var(--line);color:var(--t3);
  font-size:16px;font-weight:700;
  transition:background-color var(--t),border-color var(--t),color var(--t);
}
.step.is-done .step__dot{background:var(--teal);border-color:var(--teal);color:#fff}
.step__box{margin-top:18px}
.step__box h3{font-size:17px;margin-bottom:8px}
.step__box p{font-size:14px;color:var(--t2);line-height:1.7}
.step-meta{display:inline-block;margin-top:10px;font-size:12px;font-weight:600;color:var(--t3);letter-spacing:.02em}
.step.is-done .step-meta{color:#0E8E84}

/* ============ 规格参数 ============ */
.spec{
  display:grid;grid-template-columns:1fr 1fr;gap:0 48px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:10px 34px;box-shadow:var(--sh-1);
}
.spec-row{
  display:flex;align-items:baseline;justify-content:space-between;gap:20px;
  padding:18px 0;border-bottom:1px solid var(--line);
}
.spec-row dt{color:var(--t3);font-size:14px}
.spec-row dd{margin:0;color:var(--brand-dark);font-weight:600;font-size:15px;text-align:right}
.spec-row:nth-last-child(-n+2){border-bottom:none}

/* ============ CTA ============ */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  padding:44px 46px;border-radius:var(--r-lg);border:1px solid var(--line);
  background:linear-gradient(180deg,var(--grad-soft) 0%,#FFFFFF 100%);
  box-shadow:var(--sh-1);
}
.cta-band h2{margin-bottom:10px}
.cta-band p{color:var(--t2);max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:0 0 auto}
.cta-band--accent{border-color:#FFD9BF;box-shadow:0 1px 2px rgba(255,122,46,.08),0 8px 24px rgba(15,27,46,.06)}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-alt);border-top:1px solid var(--line);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo{margin-bottom:0}
.footer-brand p{color:var(--t2);font-size:14px;margin:16px 0 20px;max-width:330px;line-height:1.8}
.qr{
  width:112px;height:112px;border-radius:8px;
  border:1px dashed #C6D4E8;background:#fff;
  display:flex;align-items:center;justify-content:center;
  text-align:center;font-size:12px;color:var(--t3);line-height:1.6;
}
.footer-col h4{font-size:15px;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a,.footer-col span{color:var(--t2);font-size:14px}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;
  font-size:13px;color:var(--t3);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero-grid{gap:44px}
}
@media (max-width:1023px){
  :root{--header-h:60px}
  .container{padding:0 24px}
  .section{padding:72px 0}
  .nav-toggle{display:inline-flex}
  .nav-menu{
    position:fixed;inset:0;z-index:70;display:none;
    flex-direction:column;align-items:flex-start;gap:4px;
    margin:0;padding:96px 24px 140px;
    background:#fff;overflow-y:auto;
  }
  .site-header.is-open .nav-menu{display:flex}
  .nav-menu a{width:100%;padding:14px 10px;font-size:18px;border-radius:12px}
  .nav-menu a.is-active::after{left:10px;bottom:8px;transform:none}
  .nav-cta{display:none}
  .site-header.is-open .nav-cta{
    display:inline-flex;position:fixed;
    left:24px;right:24px;bottom:24px;z-index:90;
    min-height:48px;margin:0;
  }
  .hero-grid{grid-template-columns:1fr;gap:36px;padding:56px 0 40px}
  .hero-media{order:2}
  .stat-strip{grid-template-columns:repeat(3,1fr);gap:16px;padding-bottom:36px}
  .feature{grid-template-columns:1fr;gap:28px;padding:32px 0}
  .feature--reverse .feature-body{order:1}
  .feature--reverse .feature-media{order:2}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 32px}
  .spec{padding:8px 26px}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .page-hero::before{background-size:32px 32px}
  .hero-grid{padding:44px 0 32px}
  .hero-lead{font-size:16px}
  .hero-actions .btn{flex:1 1 auto}
  .stat-strip{grid-template-columns:1fr;gap:14px}
  .stat{flex-direction:row;align-items:baseline;gap:10px}
  .steps{grid-template-columns:1fr;gap:22px}
  .step{display:flex;gap:16px;align-items:flex-start;padding-right:0}
  .step:not(:last-child)::after{display:none}
  .step__dot{flex:0 0 44px;width:44px;height:44px;font-size:15px}
  .step__box{margin-top:0}
  .spec{grid-template-columns:1fr;padding:6px 20px}
  .spec-row:nth-last-child(-n+2){border-bottom:1px solid var(--line)}
  .spec-row:last-child{border-bottom:none}
  .spec-row{flex-direction:column;align-items:flex-start;gap:4px}
  .spec-row dd{text-align:left}
  .anchor-inner{gap:20px}
  .cta-band{padding:30px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:480px){
  .container{padding:0 16px}
  .logo__mark{width:36px;height:36px;flex:0 0 36px;border-radius:10px;font-size:13px}
  .logo__text b{font-size:15px}
  .logo__text span{font-size:11px}
  .site-header.is-open .nav-cta{left:16px;right:16px;bottom:16px}
  .nav-menu{padding:88px 16px 130px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
}

/* roulang page: category2 */
:root{
  --blue:#1F63E8;
  --blue-dark:#14459F;
  --blue-soft:#E8F0FF;
  --blue-mist:#EDF3FE;
  --teal:#12B3A6;
  --orange:#FF7A2E;
  --bg:#FFFFFF;
  --bg-alt:#F4F7FC;
  --line:#E2E9F4;
  --text:#0F1B2E;
  --text-2:#4E6076;
  --text-3:#8C9CB2;
  --ok:#16A34A;
  --warn:#F59E0B;
  --err:#DC2626;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:10px;
  --shadow:0 1px 2px rgba(15,27,46,.04), 0 8px 24px rgba(15,27,46,.06);
  --shadow-hover:0 12px 32px rgba(15,27,46,.10);
  --ease:200ms ease-out;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.75;color:var(--text);background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;}
a{color:var(--blue);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--blue-dark);}
button{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.35;letter-spacing:-0.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:6px;}
.container{max-width:var(--container);margin:0 auto;padding:0 32px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:120;background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease),background var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 18px rgba(15,27,46,.06);}
.nav-wrap{display:flex;align-items:center;gap:36px;height:72px;}
.logo{display:flex;align-items:center;gap:12px;color:var(--text);}
.logo:hover{color:var(--text);}
.logo__mark{
  width:42px;height:42px;border-radius:12px;flex:0 0 auto;
  background:var(--blue);color:#fff;font-weight:700;font-size:15px;
  display:flex;align-items:center;justify-content:center;letter-spacing:0;
}
.logo__text{display:flex;flex-direction:column;line-height:1.25;}
.logo__text b{font-size:16px;font-weight:700;}
.logo__text span{font-size:12px;color:var(--text-3);letter-spacing:.02em;font-weight:600;}
.nav-menu{display:flex;align-items:center;gap:8px;margin-left:auto;}
.nav-menu a{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;
  border-radius:999px;color:var(--text-2);font-size:15px;font-weight:600;
  transition:color var(--ease),background var(--ease);
}
.nav-menu a:hover{color:var(--blue);background:var(--blue-soft);}
.nav-menu a.is-active{color:var(--blue);}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:50%;bottom:-2px;transform:translateX(-50%);
  width:20px;height:2px;border-radius:2px;background:var(--blue);
}
.nav-cta{flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:12px;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{position:relative;width:18px;height:2px;border-radius:2px;background:var(--text);display:block;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--text);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background var(--ease),color var(--ease),box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.btn--primary{background:var(--blue);color:#fff;box-shadow:0 6px 16px rgba(31,99,232,.20);}
.btn--primary:hover{background:var(--blue-dark);color:#fff;transform:translateY(-1px);}
.btn--primary:active{background:var(--blue-dark);transform:translateY(0);}
.btn--ghost{background:#fff;color:var(--blue);border-color:var(--line);}
.btn--ghost:hover{border-color:var(--blue);color:var(--blue-dark);background:var(--blue-soft);}
.btn--lg{height:52px;padding:0 30px;font-size:16px;}
.btn[disabled]{opacity:.5;cursor:not-allowed;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--blue);
}
.link-arrow::after{content:"→";transition:transform var(--ease);}
.link-arrow:hover::after{transform:translateX(3px);}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;padding:88px 0 72px;
  background:
    linear-gradient(#EDF3FE 0%, #FFFFFF 100%);
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:linear-gradient(rgba(31,99,232,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(31,99,232,.07) 1px,transparent 1px);
  background-size:32px 32px;
  mask-image:radial-gradient(circle at 50% 20%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 50% 20%,#000 0%,transparent 72%);
}
.page-hero__inner{position:relative;text-align:center;max-width:820px;margin:0 auto;}
.crumb{display:flex;justify-content:center;gap:8px;font-size:14px;color:var(--text-3);margin-bottom:22px;flex-wrap:wrap;}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--blue);}
.crumb span{color:var(--text-3);}
.crumb .crumb__now{color:var(--text-2);}
.page-hero h1{
  font-size:clamp(28px,4.2vw,44px);font-weight:700;line-height:1.25;
}
.page-hero__sub{margin-top:18px;font-size:17px;color:var(--text-2);}
.hero-tags{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;margin-top:28px;}

/* ---------- shared ---------- */
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--blue-soft);color:var(--blue);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.tag--teal{background:rgba(18,179,166,.12);color:#0B8377;}
.tag--warn{background:rgba(245,158,11,.14);color:#946005;}
.tag--ok{background:rgba(22,163,74,.12);color:#127940;}
.badge-orange{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:rgba(255,122,46,.12);color:#C24E0C;font-size:12px;font-weight:600;border:1px solid rgba(255,122,46,.28);
}
.section{padding:96px 0;}
.section--alt{background:var(--bg-alt);}
.section-head{max-width:780px;margin:0 auto 40px;text-align:center;}
.section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;margin-top:12px;}
.section-head p{margin-top:14px;color:var(--text-2);}
.section-head--left{text-align:left;margin-left:0;}
.h2-bar{position:relative;padding-left:14px;}
.h2-bar::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;background:var(--blue);}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--shadow);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.img-frame{position:relative;background:var(--blue-mist);overflow:hidden;border-radius:var(--r-md) var(--r-md) 0 0;}
.img-frame img{width:100%;height:100%;object-fit:cover;aspect-ratio:3/2;}
.img-ph{
  aspect-ratio:3/2;display:flex;align-items:center;justify-content:center;
  background:var(--blue-mist);color:var(--text-3);font-size:13px;
}

/* ---------- band ---------- */
.band{position:relative;height:132px;overflow:hidden;}
.band img{width:100%;height:100%;object-fit:cover;}
.band::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(31,99,232,.72),rgba(18,179,166,.42));}
.band__text{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;z-index:2;
  color:#fff;font-size:clamp(15px,1.6vw,18px);font-weight:600;text-align:center;padding:0 24px;
}

/* ---------- reward grid ---------- */
.reward-grid{display:grid;grid-template-columns:1.25fr 1.25fr .8fr;gap:24px;margin-top:8px;}
.reward-card{display:flex;flex-direction:column;overflow:hidden;}
.reward-card--wide{grid-column:span 2;}
.reward-card__body{padding:22px 22px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.reward-card__top{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;}
.reward-card h3{font-size:20px;font-weight:600;}
.reward-card p{color:var(--text-2);font-size:15px;}
.reward-card__foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.reward-card--narrow .reward-card__body{padding:20px 18px;}
.reward-card--narrow h3{font-size:17px;}
.stat-line{display:flex;align-items:baseline;gap:8px;}
.stat-line b{font-size:22px;color:var(--blue);font-weight:700;}
.stat-line span{font-size:13px;color:var(--text-3);}

/* ---------- progress group ---------- */
.progress-panel{
  margin-top:32px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow);padding:28px 32px;
}
.progress-row{display:flex;align-items:center;gap:24px;padding:18px 0;border-bottom:1px solid var(--line);}
.progress-row:last-child{border-bottom:0;padding-bottom:4px;}
.progress-row:first-child{padding-top:4px;}
.progress-row__label{flex:0 0 190px;font-weight:600;}
.progress-row__label small{display:block;font-size:13px;color:var(--text-3);font-weight:400;}
.progress-track{flex:1;height:8px;border-radius:8px;background:var(--blue-soft);overflow:hidden;min-width:120px;}
.progress-fill{height:100%;border-radius:8px;background:var(--teal);}
.progress-fill--blue{background:var(--blue);}
.progress-value{flex:0 0 72px;text-align:right;font-weight:700;color:var(--blue);}

/* ---------- rules ---------- */
.rules-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:start;}
.rules-card{background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--r-lg);padding:32px;}
.rules-list{counter-reset:rule;display:flex;flex-direction:column;gap:22px;}
.rules-list li{display:flex;gap:16px;}
.rules-list li::before{
  counter-increment:rule;content:counter(rule,decimal-leading-zero);
  flex:0 0 auto;width:34px;height:34px;border-radius:999px;background:#fff;border:1px solid var(--line);
  color:var(--blue);font-weight:700;font-size:13px;display:flex;align-items:center;justify-content:center;
}
.rules-list h4{font-size:17px;font-weight:600;margin-bottom:4px;}
.rules-list p{color:var(--text-2);font-size:15px;}
.side-note{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow);padding:28px;}
.side-note h3{font-size:20px;font-weight:600;margin-bottom:14px;}
.side-note ul{display:flex;flex-direction:column;gap:12px;}
.side-note li{display:flex;gap:10px;color:var(--text-2);font-size:15px;}
.side-note li::before{content:"";flex:0 0 auto;width:8px;height:8px;margin-top:8px;border-radius:50%;background:var(--blue);}
.side-note .btn{margin-top:22px;width:100%;}

/* ---------- faq ---------- */
.faq-wrap{max-width:780px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:none;border:0;cursor:pointer;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 4px;font-size:17px;font-weight:600;color:var(--text);
  transition:color var(--ease);
}
.faq-q:hover{color:var(--blue);}
.faq-icon{position:relative;flex:0 0 auto;width:20px;height:20px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--blue);border-radius:2px;transition:transform var(--ease),opacity var(--ease);
}
.faq-icon::before{left:0;top:9px;width:20px;height:2px;}
.faq-icon::after{left:9px;top:0;width:2px;height:20px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height 220ms ease-out;}
.faq-a__inner{padding:0 4px 24px;color:var(--text-2);font-size:16px;}

/* ---------- cta ---------- */
.cta-card{
  background:linear-gradient(180deg,#EDF3FE 0%,#FFFFFF 100%);
  border:1px solid var(--line);border-radius:var(--r-lg);padding:40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:var(--shadow);
}
.cta-card h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;}
.cta-card p{margin-top:12px;color:var(--text-2);max-width:620px;}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-alt);border-top:1px solid var(--line);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px;}
.footer-brand p{margin-top:16px;color:var(--text-2);font-size:15px;max-width:320px;}
.qr{
  margin-top:18px;width:112px;height:112px;border-radius:8px;background:#fff;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;text-align:center;font-size:12px;color:var(--text-3);
}
.footer-col h4{font-size:16px;font-weight:600;margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a,.footer-col span{color:var(--text-2);font-size:15px;}
.footer-col a:hover{color:var(--blue);}
.footer-bottom{
  margin-top:48px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:var(--text-3);font-size:14px;
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 24px;}
  .reward-grid{grid-template-columns:1fr 1fr;}
  .reward-card--wide{grid-column:span 2;}
}
@media (max-width:1023px){
  .nav-menu{
    display:none;position:fixed;left:0;right:0;top:60px;bottom:0;background:#fff;z-index:110;
    flex-direction:column;align-items:stretch;gap:4px;padding:18px;margin:0;
  }
  .nav-menu a{height:52px;font-size:18px;border-radius:12px;padding:0 16px;}
  .nav-menu a.is-active::after{left:16px;transform:none;bottom:6px;}
  body.nav-open .nav-menu{display:flex;}
  body.nav-open{overflow:hidden;}
  .nav-cta{display:none;}
  body.nav-open .nav-cta{
    display:inline-flex;position:fixed;left:18px;right:18px;bottom:20px;z-index:130;height:52px;
    justify-content:center;box-shadow:0 12px 32px rgba(31,99,232,.24);
  }
  .nav-toggle{display:flex;margin-left:auto;}
  .nav-wrap{gap:16px;height:60px;}
  .site-header{position:sticky;}
  .logo__text span{display:none;}
  .section{padding:72px 0;}
  .page-hero{padding:72px 0 60px;}
  .rules-wrap{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .progress-row__label{flex:0 0 150px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .page-hero{padding:56px 0 48px;}
  .reward-grid{grid-template-columns:1fr;}
  .reward-card--wide{grid-column:span 1;}
  .progress-panel{padding:20px;}
  .progress-row{flex-wrap:wrap;gap:12px;}
  .progress-row__label{flex:1 1 100%;display:flex;align-items:baseline;justify-content:space-between;}
  .progress-row__label small{display:inline;}
  .progress-track{flex:1 1 100%;}
  .progress-value{flex:0 0 auto;text-align:right;}
  .progress-row{position:relative;}
  .cta-card{padding:28px 22px;}
  .cta-card .btn{width:100%;}
  .rules-card{padding:24px 20px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:479px){
  .container{padding:0 16px;}
  .logo__mark{width:38px;height:38px;font-size:14px;}
  .logo__text b{font-size:15px;}
  .band{height:110px;}
  .stat-line b{font-size:19px;}
}