/* roulang page: index */
:root{
  --primary:#1F5FE0;
  --primary-dark:#164AB8;
  --primary-light:#EDF3FF;
  --primary-xlight:#F6F9FF;
  --accent:#FF8A3D;
  --accent-dark:#F2761F;
  --success:#21B58C;
  --warn:#E5484D;
  --text:#0E1B2E;
  --text-sub:#4A5A72;
  --text-weak:#8A98AC;
  --card:#FFFFFF;
  --bg:#F6F9FF;
  --border:#E3EAF5;
  --track:#E8EEFA;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(23,54,110,.06);
  --sh-2:0 12px 28px rgba(23,54,110,.12);
  --sh-3:0 20px 48px rgba(23,54,110,.16);
  --sec:96px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  text-align:left;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,li,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--primary-dark);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
table{border-collapse:collapse;width:100%;}
summary{list-style:none;cursor:pointer;}
summary::-webkit-details-marker{display:none;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.section{padding:var(--sec) 0;}
.section--tight{padding:72px 0;}
.section--light{background:#F4F8FF;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:36px;
}
.section-head h2{
  font-size:28px;
  line-height:1.3;
  font-weight:700;
  letter-spacing:-0.3px;
}
.section-head .sec-sub{
  font-size:14px;
  line-height:22px;
  color:var(--text-sub);
  margin-top:10px;
}
.text-link{font-size:14px;font-weight:500;white-space:nowrap;display:inline-flex;align-items:center;gap:6px;}
.text-link::after{content:"→";font-size:13px;transition:transform .2s ease;}
.text-link:hover::after{transform:translateX(3px);}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:#fff;
  border-bottom:1px solid var(--border);
  transition:background-color .24s ease,box-shadow .24s ease,height .24s ease;
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:72px;
  transition:height .24s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom-color:transparent;
  box-shadow:0 6px 24px rgba(23,54,110,.10);
}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{display:block;flex:0 0 auto;filter:drop-shadow(0 4px 10px rgba(31,95,224,.28));}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-0.3px;white-space:nowrap;}
.main-nav ul{display:flex;align-items:center;gap:6px;}
.main-nav a{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 14px;
  font-size:15px;
  font-weight:500;
  color:var(--text-sub);
  border-radius:8px;
}
.main-nav a:hover{color:var(--primary);background:var(--primary-xlight);}
.main-nav a.is-active{color:var(--primary);font-weight:600;}
.main-nav a.is-active::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:2px;
  height:3px;
  border-radius:3px;
  background:var(--primary);
}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:10px;
  border:1px solid var(--border);
  background:#fff;
  align-items:center;
  justify-content:center;
}
.nav-toggle span{
  position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--text);
  transition:background-color .2s ease;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--text);
  transition:transform .24s ease;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle.is-open span{background:transparent;}
.nav-toggle.is-open span::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span::after{transform:translateY(-6px) rotate(-45deg);}
.drawer{
  display:none;
  border-top:1px solid var(--border);
  background:#fff;
  overflow:hidden;
  max-height:0;
  transition:max-height .28s ease;
}
.drawer.is-open{max-height:520px;}
.drawer ul{padding:8px 0;}
.drawer li a{
  display:flex;align-items:center;
  height:48px;
  padding:0 24px;
  font-size:16px;
  color:var(--text);
  border-bottom:1px solid var(--border);
}
.drawer li:last-child a{border-bottom:0;}
.drawer li a.is-active{color:var(--primary);font-weight:600;}
.drawer .drawer-cta{padding:16px 24px 20px;border-top:1px solid var(--border);}
.drawer .drawer-cta .btn{width:100%;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:var(--r-btn);
  font-size:16px;
  font-weight:600;
  letter-spacing:-0.2px;
  border:1.5px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:3px;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 14px rgba(31,95,224,.24);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(31,95,224,.30);}
.btn-primary:active{transform:translateY(0);box-shadow:0 3px 10px rgba(31,95,224,.22);}
.btn-accent{
  background:linear-gradient(135deg,#FF9A4D,#FF7A2F);
  color:#fff;
  font-weight:700;
  box-shadow:0 6px 18px rgba(255,122,47,.28);
}
.btn-accent:hover{color:#fff;transform:translateY(-1px);box-shadow:0 12px 30px rgba(255,122,47,.42);}
.btn-accent:active{transform:translateY(0);}
.btn-outline{background:transparent;border-color:var(--primary);color:var(--primary);}
.btn-outline:hover{background:rgba(31,95,224,.08);color:var(--primary-dark);border-color:var(--primary-dark);}
.btn-ghost-light{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.55);color:#fff;}
.btn-ghost-light:hover{background:rgba(255,255,255,.24);color:#fff;}
.btn-sm{height:42px;padding:0 20px;font-size:15px;}

/* ---------- Badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;
  border-radius:var(--r-pill);
  font-size:13px;font-weight:600;
  background:var(--primary-light);color:var(--primary);
  white-space:nowrap;
}
.badge-rare{background:var(--success);color:#fff;}
.badge-limit{background:var(--accent);color:#fff;}
.badge-ghost{background:rgba(255,255,255,.18);color:#fff;}
.pill{
  display:inline-flex;align-items:center;
  height:30px;padding:0 14px;
  border-radius:var(--r-pill);
  font-size:13px;font-weight:500;
  color:var(--primary);
  background:#fff;
  border:1px solid #D7E3FA;
}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background:linear-gradient(180deg,#FFFFFF 0%,#F4F8FF 100%);
  padding:72px 0 88px;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  right:-160px;top:-120px;
  width:520px;height:520px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(31,95,224,.14),rgba(31,95,224,0) 68%);
  pointer-events:none;
}
.hero-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:center;
  min-height:560px;
  position:relative;
  z-index:1;
}
.hero h1{
  font-size:40px;
  line-height:1.22;
  font-weight:700;
  letter-spacing:-0.5px;
  margin:18px 0 16px;
  max-width:620px;
}
.hero .hero-sub{
  font-size:17px;
  line-height:30px;
  color:var(--text-sub);
  max-width:520px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-metrics{
  display:flex;
  align-items:center;
  gap:0;
  margin-top:38px;
  padding-top:24px;
  border-top:1px solid var(--border);
}
.metric{
  flex:1 1 0;
  padding:0 22px;
  border-right:1px solid var(--border);
}
.metric:first-child{padding-left:0;}
.metric:last-child{border-right:0;padding-right:0;}
.metric .metric-num{
  font-size:26px;
  font-weight:700;
  line-height:1.2;
  color:var(--primary);
}
.metric .metric-num small{font-size:14px;font-weight:600;margin-left:2px;}
.metric .metric-label{font-size:13px;line-height:20px;color:var(--text-weak);margin-top:4px;}
.hero-visual{position:relative;}
.hero-figure{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-3);
  background:#E9EFFA;
  aspect-ratio:4/3;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-float{
  position:absolute;
  right:-14px;
  bottom:-22px;
  width:236px;
  padding:16px 18px;
  border-radius:14px;
  background:#fff;
  box-shadow:var(--sh-3);
  border:1px solid var(--border);
}
.hero-float .hf-title{font-size:13px;color:var(--text-weak);}
.hero-float .hf-num{
  font-size:26px;font-weight:700;color:var(--text);line-height:1.2;margin-top:2px;
}
.hero-float .hf-bar{
  height:8px;border-radius:999px;background:var(--track);margin-top:10px;overflow:hidden;
}
.hero-float .hf-bar span{
  display:block;height:100%;width:68%;
  border-radius:999px;
  background:linear-gradient(90deg,var(--primary),var(--success));
}

/* ---------- Steps ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  position:relative;
}
.step{
  position:relative;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-card);
  padding:26px 22px;
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(31,95,224,.3);}
.step::after{
  content:"";
  position:absolute;
  top:44px;
  right:-16px;
  width:8px;
  border-top:2px dashed #C9D8F2;
}
.step:last-child::after{display:none;}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;
  border-radius:50%;
  background:var(--primary-light);
  color:var(--primary);
  font-weight:700;
  font-size:15px;
}
.step h3{font-size:18px;font-weight:600;margin:16px 0 8px;letter-spacing:-0.2px;}
.step p{font-size:14px;line-height:23px;color:var(--text-sub);}

/* ---------- Reward cards ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.card{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(31,95,224,.3);}
.card-media{position:relative;aspect-ratio:4/3;background:#E9EFFA;overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.card:hover .card-media img{transform:scale(1.04);}
.card-media .badge{position:absolute;left:12px;top:12px;}
.card-body{padding:20px;display:flex;flex-direction:column;flex:1 1 auto;}
.card-body h3{font-size:18px;line-height:26px;font-weight:600;margin-bottom:8px;letter-spacing:-0.2px;}
.card-body p{font-size:14px;line-height:23px;color:var(--text-sub);flex:1 1 auto;}
.card-link{margin-top:16px;font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.card-link::after{content:"→";transition:transform .2s ease;}
.card-link:hover::after{transform:translateX(3px);}

/* ---------- Progress board ---------- */
.progress-board{
  border-radius:var(--r-lg);
  background:linear-gradient(135deg,#EDF3FF 0%,#F6F9FF 60%,#FFFFFF 100%);
  border:1px solid #DDE8FA;
  padding:40px;
  display:grid;
  grid-template-columns:.85fr 1.15fr;
  gap:44px;
  align-items:center;
}
.ring-wrap{display:flex;align-items:center;gap:22px;}
.ring{position:relative;width:120px;height:120px;flex:0 0 auto;}
.ring svg{transform:rotate(-90deg);}
.ring-track{stroke:#E8EEFA;}
.ring-fill{
  stroke:url(#ringGrad);
  stroke-linecap:round;
  stroke-dasharray:326.7;
  stroke-dashoffset:104.5;
}
.ring-text{
  position:absolute;inset:0;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
}
.ring-text strong{font-size:30px;font-weight:700;line-height:1;letter-spacing:-0.5px;}
.ring-text span{font-size:12px;color:var(--text-weak);margin-top:5px;}
.ring-copy h2{font-size:28px;line-height:1.3;font-weight:700;letter-spacing:-0.3px;}
.ring-copy p{font-size:14px;line-height:24px;color:var(--text-sub);margin-top:12px;max-width:360px;}
.task-list{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);}
.task{
  display:flex;align-items:center;gap:14px;
  min-height:56px;
  padding:12px 20px;
  border-bottom:1px solid var(--border);
}
.task:last-child{border-bottom:0;}
.task-icon{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
}
.task-icon.done{background:var(--success);color:#fff;}
.task-icon.doing{background:#FFF3E7;border:2px solid var(--accent);}
.task-icon.todo{background:#fff;border:2px solid #CED8E8;}
.task-main{flex:1 1 auto;min-width:0;}
.task-main .t-title{font-size:15px;font-weight:600;line-height:22px;}
.task-main .t-desc{font-size:13px;color:var(--text-weak);line-height:20px;}
.task-done .t-title{color:var(--text-weak);font-weight:500;}
.task-done .t-desc{text-decoration:line-through;text-decoration-color:rgba(138,152,172,.55);}
.task-bar{
  width:76px;height:6px;border-radius:999px;background:var(--track);overflow:hidden;flex:0 0 auto;
}
.task-bar span{display:block;height:100%;border-radius:999px;background:var(--accent);}
.task-state{font-size:13px;color:var(--text-weak);white-space:nowrap;flex:0 0 auto;}
.linear-bar{
  height:8px;border-radius:999px;background:var(--track);overflow:hidden;margin-top:18px;
}
.linear-bar span{
  display:block;height:100%;width:68%;border-radius:999px;
  background:linear-gradient(90deg,var(--primary),var(--success));
  background-size:200% 100%;
  animation:flow 3.6s linear infinite;
}
@keyframes flow{0%{background-position:0 0;}100%{background-position:200% 0;}}

/* ---------- Join bar ---------- */
.join-bar{
  border-radius:var(--r-lg);
  background:linear-gradient(120deg,#164AB8 0%,#1F5FE0 52%,#3A82F0 100%);
  color:#fff;
  padding:36px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  box-shadow:0 18px 40px rgba(22,74,184,.28);
}
.join-bar h2{font-size:24px;line-height:1.35;font-weight:700;letter-spacing:-0.3px;}
.join-bar p{font-size:14px;line-height:24px;color:rgba(255,255,255,.86);margin-top:8px;max-width:560px;}

/* ---------- News ---------- */
.news-grid{display:grid;grid-template-columns:1.08fr 1fr;gap:28px;align-items:start;}
.news-feature{
  position:relative;
  display:block;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-feature:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(31,95,224,.3);}
.news-feature .nf-media{position:relative;aspect-ratio:16/10;background:#E9EFFA;overflow:hidden;}
.news-feature .nf-media img{width:100%;height:100%;object-fit:cover;}
.news-feature .nf-media .badge{position:absolute;left:16px;top:16px;}
.nf-body{padding:22px 24px 24px;}
.nf-body h3{
  font-size:20px;line-height:30px;font-weight:600;letter-spacing:-0.2px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  color:var(--text);
}
.nf-body p{
  margin-top:10px;font-size:14px;line-height:24px;color:var(--text-sub);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.nf-meta{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-weak);
}
.nf-meta .arrow{color:var(--primary);font-weight:600;}
.news-list{display:flex;flex-direction:column;gap:16px;}
.news-item{
  position:relative;
  display:flex;gap:16px;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-card);
  padding:16px;
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(31,95,224,.3);}
.news-item .ni-thumb{
  flex:0 0 auto;width:96px;height:72px;border-radius:10px;overflow:hidden;background:#E9EFFA;
}
.news-item .ni-thumb img{width:100%;height:100%;object-fit:cover;}
.news-item .ni-main{min-width:0;flex:1 1 auto;}
.news-item h3{
  font-size:16px;line-height:24px;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  color:var(--text);
}
.news-item .ni-foot{
  margin-top:8px;display:flex;align-items:center;gap:10px;
  font-size:12px;color:var(--text-weak);
}
.news-item .ni-foot .badge{height:22px;padding:0 10px;font-size:12px;}
.news-empty{
  background:#fff;
  border:1px dashed #CFDCF3;
  border-radius:var(--r-lg);
  padding:56px 24px;
  text-align:center;
}
.news-empty .ne-art{
  width:74px;height:74px;margin:0 auto 18px;
  border-radius:18px;
  border:2px dashed #C9D8F2;
  position:relative;
}
.news-empty .ne-art::before,
.news-empty .ne-art::after{
  content:"";position:absolute;background:#D9E4F7;border-radius:4px;
}
.news-empty .ne-art::before{left:16px;top:22px;width:40px;height:4px;}
.news-empty .ne-art::after{left:16px;top:34px;width:26px;height:4px;}
.news-empty p{font-size:15px;color:var(--text-weak);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{
  background:#fff;
  border:1px solid var(--border);
  border-radius:14px;
  margin-bottom:14px;
  overflow:hidden;
  transition:background-color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{background:#F6F9FF;}
.faq-item[open]{border-color:rgba(31,95,224,.3);box-shadow:var(--sh-1);background:#fff;}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;
  font-size:16px;font-weight:600;line-height:26px;
}
.faq-icon{
  position:relative;flex:0 0 auto;width:22px;height:22px;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;
  transition:transform .24s ease;
}
.faq-icon::before{width:14px;height:2px;transform:translate(-50%,-50%);}
.faq-icon::after{width:2px;height:14px;transform:translate(-50%,-50%);}
.faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);}
.faq-item[open] .faq-icon::before{transform:translate(-50%,-50%) rotate(180deg);}
.faq-answer{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--text-sub);}

/* ---------- Final CTA ---------- */
.final-cta{
  border-radius:var(--r-lg);
  background:linear-gradient(135deg,#0E1B2E 0%,#164AB8 100%);
  color:#fff;
  padding:52px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  box-shadow:var(--sh-3);
}
.final-cta h2{font-size:28px;line-height:1.32;font-weight:700;letter-spacing:-0.3px;}
.final-cta p{font-size:15px;line-height:26px;color:rgba(255,255,255,.82);margin-top:12px;max-width:600px;}

/* ---------- Footer ---------- */
.site-footer{background:#F4F8FF;border-top:1px solid var(--border);padding-top:64px;margin-top:0;}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand span{font-size:16px;font-weight:700;color:var(--text);}
.footer-desc{font-size:14px;line-height:24px;color:var(--text-sub);max-width:300px;}
.social-row{display:flex;gap:12px;margin-top:20px;}
.social-row a{
  width:40px;height:40px;border-radius:50%;
  background:#fff;border:1px solid var(--border);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--primary);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.social-row a:hover{transform:translateY(-3px);box-shadow:var(--sh-1);border-color:rgba(31,95,224,.35);}
.footer-col h3{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--text);}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:14px;color:var(--text-sub);}
.footer-col ul a:hover{color:var(--primary);}
.footer-col p{font-size:14px;line-height:24px;color:var(--text-sub);}
.footer-bottom{
  border-top:1px solid var(--border);
  padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-weak);
}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  :root{--container:1140px;}
}
@media (max-width:1023px){
  :root{--sec:72px;}
  .container{padding-left:20px;padding-right:20px;}
  .main-nav{display:none;}
  .header-actions .btn-sm{display:none;}
  .nav-toggle{display:inline-flex;}
  .drawer{display:block;}
  .hero{padding:48px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;min-height:0;}
  .hero h1{font-size:34px;}
  .hero-visual{order:2;}
  .hero-float{right:12px;bottom:-18px;width:210px;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .step::after{display:none;}
  .progress-board{grid-template-columns:1fr;gap:32px;padding:32px 28px;}
  .news-grid{grid-template-columns:1fr;}
  .join-bar{flex-direction:column;align-items:flex-start;padding:32px 28px;}
  .final-cta{flex-direction:column;align-items:flex-start;padding:40px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:639px){
  :root{--sec:56px;}
  .container{padding-left:16px;padding-right:16px;}
  .header-inner{height:64px;}
  .brand-text{font-size:15px;}
  .hero{padding:36px 0 52px;}
  .hero h1{font-size:27px;line-height:1.32;}
  .hero .hero-sub{font-size:15px;line-height:26px;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;height:44px;}
  .hero-metrics{flex-wrap:wrap;gap:18px 0;}
  .metric{flex:1 1 50%;padding:0 16px;border-right:0;}
  .metric:nth-child(odd){padding-left:0;}
  .metric:nth-child(even){border-left:1px solid var(--border);}
  .hero-float{position:static;width:100%;margin-top:16px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:26px;}
  .section-head h2{font-size:22px;}
  .grid-4{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;gap:16px;}
  .step{padding:20px 18px;}
  .progress-board{padding:24px 18px;}
  .ring-wrap{flex-direction:column;align-items:flex-start;gap:16px;}
  .ring-copy h2{font-size:22px;}
  .task{padding:12px 16px;gap:10px;}
  .task-bar{display:none;}
  .join-bar{padding:26px 20px;}
  .join-bar h2{font-size:20px;}
  .join-bar .btn{width:100%;}
  .news-item{padding:14px;}
  .news-item .ni-thumb{width:84px;height:64px;}
  .nf-body{padding:18px;}
  .faq-item summary{padding:16px 18px;font-size:15px;}
  .faq-answer{padding:0 18px 18px;font-size:14px;}
  .final-cta{padding:32px 20px;}
  .final-cta h2{font-size:22px;}
  .final-cta .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --c-primary:#1F5FE0;
  --c-primary-dark:#164AB8;
  --c-primary-light:#EDF3FF;
  --c-primary-soft:#F6F9FF;
  --c-accent:#FF8A3D;
  --c-accent-dark:#F2761F;
  --c-success:#21B58C;
  --c-danger:#E5484D;
  --t-1:#0E1B2E;
  --t-2:#4A5A72;
  --t-3:#8A98AC;
  --bg-card:#FFFFFF;
  --bg-page:#F6F9FF;
  --line:#E3EAF5;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(23,54,110,.06);
  --sh-2:0 12px 28px rgba(23,54,110,.12);
  --sh-3:0 20px 48px rgba(23,54,110,.16);
  --font-base:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-base);
  font-size:16px;
  line-height:1.75;
  color:var(--t-1);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none;background:none;transition:color .2s ease}
a:hover{color:var(--c-primary-dark)}
button,input,select,textarea{font:inherit;color:inherit}
button{border:0;background:none;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5,p,figure{margin:0}
table{border-collapse:collapse;width:100%}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}
@media (max-width:639px){.container{padding:0 16px}}
@media (min-width:640px) and (max-width:1023px){.container{padding:0 20px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:background .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  box-shadow:var(--sh-2);
  border-bottom-color:transparent;
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:72px;
  transition:height .24s ease;
}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:600;letter-spacing:-.3px;color:var(--t-1)}
.brand:hover{color:var(--t-1)}
.brand-mark{flex:none;width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,#2A6DF0,#164AB8);display:flex;align-items:center;justify-content:center}
.brand-text{white-space:nowrap}
.main-nav{display:flex;align-items:center}
.main-nav ul{display:flex;align-items:center;gap:4px}
.main-nav a{
  position:relative;
  display:inline-block;
  padding:9px 14px;
  border-radius:8px;
  font-size:15px;
  font-weight:500;
  color:var(--t-2);
  white-space:nowrap;
}
.main-nav a:hover{color:var(--c-primary);background:var(--c-primary-soft)}
.main-nav a.is-active{color:var(--c-primary);font-weight:600}
.main-nav a.is-active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:3px;
  border-radius:3px;
  background:var(--c-primary);
}
.nav-cta-item{display:none}
.header-actions{display:flex;align-items:center;gap:12px;position:relative;z-index:90}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:#fff;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--t-1);transition:transform .24s ease,opacity .24s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border:1.5px solid transparent;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:0;
  cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:none;box-shadow:var(--sh-1)}
.btn-outline{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-outline:hover{background:rgba(31,95,224,.08);color:var(--c-primary-dark);border-color:var(--c-primary-dark)}
.btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.text-link{font-size:14px;font-weight:500;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px}
.text-link:hover{text-decoration:underline}

/* ---------- breadcrumb ---------- */
.page-main{padding:32px 0 0}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:14px;
  line-height:22px;
  color:var(--t-3);
  margin-bottom:24px;
}
.breadcrumb a{color:var(--t-3)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:#C6D2E4}
.breadcrumb .current{color:var(--t-2);max-width:52%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* ---------- article ---------- */
.article-shell{max-width:760px;margin:0 auto}
.article-header{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:32px 36px;
  box-shadow:var(--sh-1);
}
.badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-pill);
  font-size:13px;
  font-weight:500;
  line-height:1;
}
.badge-cat{background:var(--c-primary-light);color:var(--c-primary)}
.article-header h1{
  margin:16px 0 18px;
  font-size:32px;
  line-height:1.35;
  font-weight:700;
  letter-spacing:-.4px;
  color:var(--t-1);
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 20px;
  padding-top:18px;
  border-top:1px solid var(--line);
  font-size:14px;
  color:var(--t-3);
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px}
.article-meta svg{color:var(--t-3);flex:none}
.article-meta a{color:var(--t-3)}
.article-meta a:hover{color:var(--c-primary)}
.article-cover{margin:24px 0 0}
.article-cover img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  background:#E8EEFA;
}
.article-body{
  margin-top:24px;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:36px;
  box-shadow:var(--sh-1);
  font-size:17px;
  line-height:1.9;
  color:#22314a;
}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;
  margin:40px 0 16px;
  padding-left:14px;
  font-size:24px;
  line-height:1.45;
  font-weight:600;
  letter-spacing:-.3px;
  color:var(--t-1);
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:6px;
  width:4px;height:22px;
  border-radius:3px;
  background:var(--c-primary);
}
.article-body h2:first-child{margin-top:0}
.article-body h3{margin:28px 0 12px;font-size:22px;line-height:1.5;font-weight:600;color:var(--t-1)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding:0}
.article-body li{position:relative;margin:0 0 .6em;padding-left:22px}
.article-body ul > li::before{
  content:"";
  position:absolute;
  left:4px;top:.65em;
  width:8px;height:8px;
  border-radius:2px;
  background:var(--c-primary);
}
.article-body ol{counter-reset:item}
.article-body ol > li{counter-increment:item}
.article-body ol > li::before{
  content:counter(item) ".";
  position:absolute;
  left:0;top:0;
  color:var(--c-primary);
  font-weight:600;
}
.article-body blockquote{
  margin:24px 0;
  padding:16px 20px;
  background:var(--c-primary-light);
  border-left:3px solid var(--c-primary);
  border-radius:0 12px 12px 0;
  color:var(--t-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(31,95,224,.35)}
.article-body a:hover{color:var(--c-primary-dark);border-bottom-color:var(--c-primary-dark)}
.article-body img{border-radius:12px;margin:24px auto}
.article-body figcaption,.article-body .caption{
  margin-top:10px;
  text-align:center;
  font-size:13px;
  line-height:20px;
  color:var(--t-3);
}
.article-body .table-wrap{overflow-x:auto;margin:24px 0;border:1px solid var(--line);border-radius:12px}
.article-body table{min-width:520px;font-size:15px}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left}
.article-body th{background:var(--c-primary-soft);font-weight:600;color:var(--t-1)}
.article-body tr:last-child td{border-bottom:0}
.article-body strong{font-weight:600;color:var(--t-1)}
.article-body hr{margin:32px 0;border:0;border-top:1px solid var(--line)}
.empty-article{padding:16px 0 8px;text-align:center}
.empty-article .empty-title{font-size:20px;font-weight:600;color:var(--t-1);margin-bottom:8px}
.empty-article p{color:var(--t-2);margin-bottom:20px}
.article-foot{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-top:28px;
  padding:24px 28px;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
}
.article-foot .foot-hint{font-size:14px;color:var(--t-3)}
.article-foot .foot-links{display:flex;align-items:center;gap:20px}
@media (max-width:639px){
  .page-main{padding-top:24px}
  .article-header{padding:24px 20px}
  .article-header h1{font-size:26px}
  .article-body{padding:22px 20px;font-size:16px}
  .article-body h2{font-size:21px;margin-top:32px}
  .article-body h3{font-size:19px}
  .article-foot{padding:20px}
  .article-foot .btn{width:100%}
  .article-foot .foot-links{width:100%;justify-content:space-between}
}

/* ---------- related ---------- */
.related-section{padding:56px 0 0}
.section-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-bottom:24px;
}
.section-head h2{font-size:24px;line-height:1.4;font-weight:600;letter-spacing:-.3px;color:var(--t-1)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.related-card{
  display:flex;
  flex-direction:column;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(31,95,224,.3)}
.related-card .thumb{aspect-ratio:16/10;background:#E8EEFA}
.related-card .thumb img{width:100%;height:100%;object-fit:cover}
.related-card .card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.related-card h3{font-size:18px;line-height:1.45;font-weight:600;color:var(--t-1);letter-spacing:-.2px}
.related-card h3 a{color:var(--t-1)}
.related-card h3 a:hover{color:var(--c-primary)}
.related-card .card-time{font-size:13px;line-height:20px;color:var(--t-3);margin-top:auto}
@media (max-width:1023px){
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:639px){
  .related-section{padding-top:44px}
  .related-grid{grid-template-columns:1fr;gap:16px}
}

/* ---------- footer ---------- */
.site-footer{
  margin-top:72px;
  background:#F4F8FF;
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:32px;
  padding:56px 0 40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:600;color:var(--t-1);letter-spacing:-.3px}
.footer-desc{margin-top:14px;font-size:14px;line-height:1.85;color:var(--t-2);max-width:320px}
.social-row{display:flex;gap:10px;margin-top:18px}
.social-row a{
  width:36px;height:36px;
  border-radius:50%;
  background:#fff;
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  color:var(--t-2);
  transition:color .2s ease,background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.social-row a:hover{color:#fff;background:var(--c-primary);transform:translateY(-2px);box-shadow:var(--sh-2)}
.footer-col h3{font-size:15px;font-weight:600;color:var(--t-1);margin-bottom:16px}
.footer-col ul li{margin-bottom:10px;font-size:14px;color:var(--t-2)}
.footer-col a{color:var(--t-2)}
.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:18px 0 24px;
  font-size:13px;
  line-height:20px;
  color:var(--t-3);
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 32px}
}
@media (max-width:639px){
  .site-footer{margin-top:56px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-desc{max-width:none}
}

/* ---------- mobile nav ---------- */
@media (max-width:1023px){
  .header-cta{display:none}
  .nav-toggle{display:inline-flex}
  .main-nav{
    position:fixed;
    top:0;left:0;right:0;
    height:100vh;
    padding:84px 0 32px;
    background:#fff;
    overflow-y:auto;
    transform:translateY(-100%);
    opacity:0;
    visibility:hidden;
    transition:transform .28s ease,opacity .28s ease,visibility .28s ease;
    z-index:70;
  }
  .main-nav.is-open{transform:translateY(0);opacity:1;visibility:visible}
  .main-nav ul{display:block;padding:0 20px}
  .main-nav li{border-bottom:1px solid var(--line)}
  .main-nav a{
    display:flex;
    align-items:center;
    width:100%;
    height:48px;
    padding:0;
    border-radius:0;
    font-size:16px;
  }
  .main-nav a:hover{background:transparent}
  .main-nav a.is-active::after{display:none}
  .nav-cta-item{display:block;border-bottom:0!important;margin-top:22px}
  .nav-cta-item a{
    justify-content:center;
    background:var(--c-primary);
    color:#fff;
    border-radius:var(--r-btn);
    font-weight:600;
  }
  .nav-cta-item a:hover{background:var(--c-primary-dark);color:#fff}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important}
}

/* roulang page: category1 */
:root{
  --brand:#1F5FE0;
  --brand-dark:#164AB8;
  --brand-light:#EDF3FF;
  --brand-xlight:#F6F9FF;
  --accent:#FF8A3D;
  --accent-dark:#F2761F;
  --success:#21B58C;
  --danger:#E5484D;
  --text:#0E1B2E;
  --text-2:#4A5A72;
  --text-3:#8A98AC;
  --card:#FFFFFF;
  --border:#E3EAF5;
  --tint:#F4F8FF;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(23,54,110,.06);
  --sh-2:0 12px 28px rgba(23,54,110,.12);
  --sh-3:0 20px 48px rgba(23,54,110,.16);
  --sec-gap:96px;
  --container:1200px;
  --ease:.22s cubic-bezier(.4,.2,.2,1);
}
@media (max-width:1023px){:root{--sec-gap:72px;--container:100%}}
@media (max-width:639px){:root{--sec-gap:56px}}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--brand-xlight);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.drawer-open{overflow:hidden}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--brand-dark)}
button{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.3px;color:var(--text);line-height:1.35}
p{margin:0 0 1em;line-height:1.75}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
figure{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
@media (max-width:1023px){.container{padding:0 20px}}
@media (max-width:639px){.container{padding:0 16px}}
@media (min-width:1440px){.container{max-width:1280px}}

.section{padding:var(--sec-gap) 0}
.section-tint{background:var(--tint)}
.section-head{margin-bottom:32px;display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.section-head h2{font-size:clamp(22px,3.1vw,28px)}
.section-sub{margin:10px 0 0;font-size:15px;color:var(--text-2);max-width:760px}
.section-link{font-size:14px;font-weight:600;white-space:nowrap}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:#fff;
  border-bottom:1px solid var(--border);
  transition:background var(--ease),box-shadow var(--ease),backdrop-filter var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  box-shadow:0 10px 26px rgba(23,54,110,.09);
  border-bottom-color:rgba(227,234,245,.9);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height var(--ease)}
.site-header.is-scrolled .header-inner{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text);font-size:18px;font-weight:700;letter-spacing:-.3px;white-space:nowrap}
.logo:hover{color:var(--brand)}
.logo svg{flex:none}
.logo-text{display:inline-block}
.main-nav{height:100%}
.main-nav ul{display:flex;align-items:center;gap:34px;height:100%}
.main-nav a{position:relative;display:inline-flex;align-items:center;height:100%;font-size:15px;font-weight:500;color:var(--text-2)}
.main-nav a:hover{color:var(--brand)}
.main-nav a.is-active{color:var(--brand);font-weight:600}
.main-nav a.is-active::after{
  content:"";position:absolute;left:50%;bottom:16px;transform:translateX(-50%);
  width:22px;height:3px;border-radius:999px;background:var(--brand);
}
.header-actions{display:flex;align-items:center;gap:12px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border:1.5px solid transparent;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;text-align:center;cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:none;box-shadow:var(--sh-1)}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:rgba(31,95,224,.08);color:var(--brand-dark);border-color:var(--brand-dark)}
.btn-ghost:active{background:rgba(31,95,224,.14)}
.btn-accent{background:linear-gradient(135deg,#FF9A4D 0%,#FF7A2F 100%);color:#fff;font-weight:700;box-shadow:0 8px 20px rgba(255,122,47,.28)}
.btn-accent:hover{color:#fff;transform:translateY(-1px);box-shadow:0 14px 28px rgba(242,118,31,.34)}
.btn-accent:active{transform:none;box-shadow:0 8px 20px rgba(255,122,47,.24)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:9px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

.pill{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);font-size:13px;font-weight:500;line-height:1;background:var(--brand-light);color:var(--brand)}
.pill-line{background:#fff;border:1px solid var(--border);color:var(--text-2)}

.nav-toggle{
  display:none;position:relative;width:44px;height:44px;padding:0;
  background:#fff;border:1px solid var(--border);border-radius:12px;cursor:pointer;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.nav-toggle:hover{border-color:rgba(31,95,224,.4);box-shadow:var(--sh-1)}
.nav-toggle span{position:absolute;left:12px;right:12px;height:2px;border-radius:2px;background:var(--text)}
.nav-toggle span:nth-child(1){top:15px}
.nav-toggle span:nth-child(2){top:21px}
.nav-toggle span:nth-child(3){top:27px}

/* ============ 抽屉导航 ============ */
.drawer{
  position:fixed;inset:0;z-index:80;background:rgba(14,27,46,.45);
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);
}
.drawer.is-open{opacity:1;visibility:visible}
.drawer-panel{
  background:#fff;padding:16px 20px 28px;max-height:100%;overflow-y:auto;
  transform:translateY(-14px);transition:transform var(--ease);
}
.drawer.is-open .drawer-panel{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:48px;border-bottom:1px solid var(--border)}
.drawer-title{font-size:16px;font-weight:600}
.drawer-close{width:44px;height:44px;margin-right:-10px;background:transparent;border:0;color:var(--text-2);cursor:pointer;display:flex;align-items:center;justify-content:center;border-radius:10px}
.drawer-close:hover{background:var(--brand-light);color:var(--brand)}
.drawer-nav li{border-bottom:1px solid var(--border)}
.drawer-nav a{display:flex;align-items:center;height:48px;font-size:15px;color:var(--text-2);font-weight:500}
.drawer-nav a.is-active{color:var(--brand);font-weight:600}
.drawer .btn{margin-top:20px}

/* ============ 页面页头 ============ */
.page-head{
  padding:36px 0 var(--sec-gap);
  background:linear-gradient(180deg,#EDF3FF 0%,#F6F9FF 100%);
  border-bottom:1px solid var(--border);
}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;font-size:14px;color:var(--text-3);margin-bottom:22px}
.breadcrumb li+li::before{content:"/";margin:0 8px;color:#C3CEDF}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb [aria-current]{color:var(--text-2)}
.page-head-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:56px;align-items:center}
.page-head-text .pill{margin-bottom:16px}
.page-head h1{font-size:clamp(26px,4.2vw,40px);line-height:1.22;letter-spacing:-.6px;margin-bottom:16px}
.lead{font-size:17px;color:var(--text-2);max-width:600px;margin-bottom:22px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag-row li{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;
  border-radius:var(--r-pill);background:#fff;border:1px solid var(--border);
  font-size:13px;color:var(--text-2);
}
.page-head-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-3);background:#E7EEF9}

/* ============ 步骤时间线 ============ */
.timeline{position:relative;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:19px;top:14px;bottom:14px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand) 0%,rgba(31,95,224,.14) 100%);
}
.timeline-item{position:relative;padding:0 0 28px 66px}
.timeline-item:last-child{padding-bottom:0}
.timeline-index{
  position:absolute;left:0;top:0;width:40px;height:40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:#fff;border:1.5px solid var(--brand-light);color:var(--brand);
  font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;box-shadow:var(--sh-1);
}
.timeline-body{
  display:flex;align-items:flex-start;justify-content:space-between;gap:24px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-md);
  padding:22px 24px;box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.timeline-body:hover{transform:translateY(-3px);border-color:rgba(31,95,224,.3);box-shadow:var(--sh-2)}
.timeline-text{min-width:0}
.timeline-text h3{font-size:19px;margin-bottom:8px}
.timeline-text p{font-size:15px;color:var(--text-2);line-height:1.78;margin:0}
.timeline-media{
  flex:none;width:190px;aspect-ratio:16/10;border-radius:12px;overflow:hidden;
  background:#E7EEF9;box-shadow:var(--sh-1);
}
.timeline-media img{width:100%;height:100%;object-fit:cover}

/* ============ 注意事项 ============ */
.notice-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.notice-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-md);
  padding:26px;box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.notice-card:hover{transform:translateY(-3px);border-color:rgba(31,95,224,.3);box-shadow:var(--sh-2)}
.notice-card h3{font-size:18px;margin-bottom:14px;display:flex;align-items:center;gap:10px}
.notice-card h3 .dot{width:8px;height:8px;border-radius:50%;background:var(--brand);flex:none}
.check-list li{position:relative;padding-left:18px;font-size:15px;color:var(--text-2);line-height:1.8;margin-bottom:10px}
.check-list li:last-child{margin-bottom:0}
.check-list li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:2px;background:var(--brand)}

/* ============ 异常提示卡 ============ */
.alert-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-md);
  box-shadow:var(--sh-1);overflow:hidden;
}
.alert-item{display:flex;gap:18px;padding:24px;border-bottom:1px solid var(--border);transition:background var(--ease)}
.alert-item:last-child{border-bottom:0}
.alert-item:hover{background:#F6F9FF}
.alert-icon{
  flex:none;width:42px;height:42px;border-radius:12px;background:var(--brand-light);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
}
.alert-body h3{font-size:17px;margin-bottom:6px}
.alert-body p{font-size:15px;color:var(--text-2);line-height:1.78;margin:0}
.alert-foot{margin-top:20px;font-size:14px;color:var(--text-3)}

/* ============ 登录方式对照 ============ */
.method-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.method-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-md);
  padding:28px;box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.method-card:hover{transform:translateY(-4px);border-color:rgba(31,95,224,.3);box-shadow:var(--sh-2)}
.method-card h3{font-size:19px;margin:14px 0 10px}
.method-card > p{font-size:15px;color:var(--text-2);line-height:1.78;margin-bottom:16px}
.method-meta{display:flex;flex-wrap:wrap;gap:10px}
.method-meta li{font-size:13px;color:var(--text-2);background:var(--tint);border-radius:var(--r-pill);padding:5px 12px}

/* ============ 环境核对数据块 ============ */
.fact-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.fact{
  background:#fff;border:1px solid var(--border);border-radius:14px;padding:22px;
  box-shadow:var(--sh-1);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.fact:hover{transform:translateY(-3px);border-color:rgba(31,95,224,.3);box-shadow:var(--sh-2)}
.fact-icon{
  width:38px;height:38px;border-radius:11px;background:var(--brand-light);color:var(--brand);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;
}
.fact h3{font-size:16px;margin-bottom:6px}
.fact p{font-size:14px;color:var(--text-2);line-height:1.72;margin:0}

/* ============ 收尾 CTA ============ */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  padding:46px 48px;border-radius:24px;color:#fff;
  background:linear-gradient(120deg,#1F5FE0 0%,#3B7BF0 58%,#5B93F5 100%);
  box-shadow:var(--sh-3);
}
.cta-band h2{color:#fff;font-size:clamp(21px,2.6vw,26px);margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.86);font-size:15px;margin:0;max-width:600px}

/* ============ 页脚 ============ */
.site-footer{background:var(--tint);border-top:1px solid var(--border);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--text);margin-bottom:14px}
.footer-desc{font-size:14px;color:var(--text-2);line-height:1.8;max-width:320px;margin-bottom:20px}
.social-row{display:flex;gap:12px}
.social-row a{
  width:40px;height:40px;border-radius:50%;background:#fff;border:1px solid var(--border);
  color:var(--text-2);display:flex;align-items:center;justify-content:center;
  transition:color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.social-row a:hover{color:var(--brand);border-color:rgba(31,95,224,.4);transform:translateY(-2px);box-shadow:var(--sh-1)}
.footer-col h3{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--text)}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--brand)}
.footer-col address{font-style:normal;font-size:14px;color:var(--text-2);line-height:1.9}
.footer-bottom{
  border-top:1px solid var(--border);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--text-3);margin:0}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .main-nav{display:none}
  .nav-toggle{display:block}
  .header-actions .btn{display:none}
  .page-head-grid{grid-template-columns:1fr;gap:32px}
  .page-head-media{display:none}
  .fact-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .timeline-body{flex-direction:column}
  .timeline-media{width:100%}
  .notice-grid,.method-grid{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:stretch;text-align:center;padding:36px 24px;gap:24px}
  .cta-band .btn{width:100%}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (max-width:639px){
  .logo{font-size:16px}
  .logo-text{max-width:150px;overflow:hidden;text-overflow:ellipsis}
  .header-inner{height:64px}
  .site-header.is-scrolled .header-inner{height:56px}
  .timeline-item{padding-left:56px}
  .timeline-index{width:36px;height:36px;font-size:13px}
  .timeline::before{left:17px}
  .timeline-body{padding:18px}
  .fact-grid{grid-template-columns:1fr}
  .alert-item{padding:20px}
  .footer-grid{grid-template-columns:1fr}
  .btn{height:44px;padding:0 22px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category2 */
:root{
  --c-primary:#1F5FE0;
  --c-primary-dark:#164AB8;
  --c-primary-light:#EDF3FF;
  --c-tint:#F4F8FF;
  --c-page:#F6F9FF;
  --c-accent:#FF8A3D;
  --c-accent-dark:#F2761F;
  --c-success:#21B58C;
  --c-warn:#E5484D;
  --t-1:#0E1B2E;
  --t-2:#4A5A72;
  --t-3:#8A98AC;
  --c-card:#FFFFFF;
  --c-border:#E3EAF5;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(23,54,110,.06);
  --sh-2:0 12px 28px rgba(23,54,110,.12);
  --sh-3:0 20px 48px rgba(23,54,110,.16);
  --ease:.2s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--t-1);
  background:var(--c-page);
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,h6,p,figure,blockquote{margin:0}
h1,h2,h3,h4{font-weight:600;letter-spacing:-.3px;line-height:1.35}
ul,ol{list-style:none;margin:0;padding:0}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease)}
a:hover{color:var(--c-primary-dark)}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
input,select,textarea{font:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--c-primary);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;z-index:200}
.skip-link:focus{left:0;color:#fff}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}

/* ===== 头部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--c-border);
  transition:background-color .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom-color:transparent;
  box-shadow:var(--sh-1);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:72px;transition:height .24s ease;
}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--t-1);letter-spacing:-.3px}
.brand:hover{color:var(--c-primary)}
.brand svg{flex:0 0 auto}
.main-nav ul{display:flex;align-items:center;gap:4px}
.main-nav a{
  position:relative;display:inline-block;padding:10px 14px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--t-2);
}
.main-nav a::after{
  content:"";position:absolute;left:50%;bottom:3px;width:0;height:3px;border-radius:3px;
  background:var(--c-primary);transform:translateX(-50%);transition:width .2s ease;
}
.main-nav a:hover{color:var(--c-primary)}
.main-nav a:hover::after{width:16px}
.main-nav a.is-active{color:var(--c-primary);font-weight:600}
.main-nav a.is-active::after{width:22px}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--c-border);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;background:#fff;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--t-1);transition:transform .22s ease,opacity .22s ease}
.nav-toggle:hover{border-color:var(--c-primary)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== 抽屉导航 ===== */
.mobile-drawer{
  position:fixed;top:0;right:0;z-index:90;height:100%;width:min(86vw,368px);
  background:#fff;box-shadow:var(--sh-3);display:flex;flex-direction:column;
  padding:20px;overflow-y:auto;transform:translateX(102%);
  transition:transform .28s ease;
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--c-border)}
.drawer-title{font-size:15px;font-weight:600}
.drawer-close{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;color:var(--t-2);border:1px solid var(--c-border)}
.drawer-close:hover{color:var(--c-primary);border-color:var(--c-primary)}
.drawer-nav{margin:12px 0 0}
.drawer-nav li{border-bottom:1px solid var(--c-border)}
.drawer-nav a{display:flex;align-items:center;min-height:48px;font-size:15px;font-weight:500;color:var(--t-2);padding:0 4px}
.drawer-nav a:hover{color:var(--c-primary)}
.drawer-nav a.is-active{color:var(--c-primary);font-weight:600}
.drawer-foot{margin-top:auto;padding-top:20px}
.drawer-backdrop{position:fixed;inset:0;z-index:80;background:rgba(14,27,46,.42);opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease}
.drawer-backdrop.is-open{opacity:1;visibility:visible}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-btn);border:1.5px solid transparent;
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background-color var(--ease),color var(--ease),box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.btn i{font-size:14px}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(31,95,224,.22)}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 24px rgba(31,95,224,.3)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 10px rgba(31,95,224,.2)}
.btn-accent{background:linear-gradient(135deg,#FF9A4D,#FF7A2F);color:#fff;font-weight:700;box-shadow:0 8px 20px rgba(255,122,47,.28)}
.btn-accent:hover{background:linear-gradient(135deg,#FF9A4D,#F2761F);color:#fff;transform:translateY(-1px);box-shadow:0 14px 28px rgba(255,122,47,.34)}
.btn-accent:active{transform:translateY(0)}
.btn-outline{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-outline:hover{background:rgba(31,95,224,.08);border-color:var(--c-primary-dark);color:var(--c-primary-dark)}
.btn-light{background:#fff;color:var(--c-primary);box-shadow:0 8px 20px rgba(9,30,70,.18)}
.btn-light:hover{background:#F4F8FF;color:var(--c-primary-dark);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

/* ===== 通用板块 ===== */
.section{padding:96px 0}
.section--white{background:#fff}
.section--tint{background:var(--c-tint)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head h2{font-size:28px;line-height:1.32}
.section-head p{margin-top:8px;font-size:15px;color:var(--t-2)}
.section-link{font-size:15px;font-weight:600;white-space:nowrap}
.section-link i{margin-left:4px;font-size:12px}

/* ===== 页头 ===== */
.page-hero{background:#fff;border-bottom:1px solid var(--c-border);padding:32px 0 48px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--t-3);margin-bottom:22px}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:#C3CEDE}
.breadcrumb a{color:var(--t-3)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .current{color:var(--t-2);max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hero-grid{display:grid;grid-template-columns:1.3fr .9fr;gap:48px;align-items:center}
.page-hero h1{font-size:40px;line-height:1.25;font-weight:700;letter-spacing:-.5px}
.hero-lead{margin-top:16px;font-size:16px;color:var(--t-2);max-width:620px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:var(--r-pill);
  background:var(--c-primary-light);color:var(--c-primary);font-size:13px;font-weight:500;
}
.tag--outline{background:#fff;border:1px solid var(--c-border);color:var(--t-2)}
.hero-figure{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-3);background:#E8EEFA}
.hero-figure img{width:100%;height:300px;object-fit:cover}

/* ===== 奖励网格 ===== */
.reward-grid{margin:0 -12px}
.reward-grid > .cell{padding:0 12px 24px}
.reward-card{
  display:flex;flex-direction:column;height:100%;background:var(--c-card);
  border:1px solid var(--c-border);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.reward-card:hover{transform:translateY(-4px);border-color:rgba(31,95,224,.3);box-shadow:var(--sh-2)}
.reward-media{position:relative;aspect-ratio:4/3;background:#E8EEFA;overflow:hidden}
.reward-media img{width:100%;height:100%;object-fit:cover}
.rarity{
  position:absolute;left:12px;top:12px;display:inline-flex;align-items:center;
  height:26px;padding:0 12px;border-radius:var(--r-pill);font-size:13px;font-weight:600;
  box-shadow:0 4px 10px rgba(14,27,46,.12);
}
.rarity--common{background:var(--c-primary-light);color:var(--c-primary)}
.rarity--rare{background:var(--c-success);color:#fff}
.rarity--limited{background:var(--c-accent);color:#fff}
.reward-body{display:flex;flex-direction:column;gap:10px;padding:18px;flex:1}
.reward-body h3{font-size:17px;line-height:1.45}
.reward-desc{
  font-size:14px;line-height:1.7;color:var(--t-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.link-more{display:inline-flex;align-items:center;gap:6px;margin-top:auto;font-size:14px;font-weight:600}
.link-more i{font-size:12px;transition:transform var(--ease)}
.link-more:hover i{transform:translateX(3px)}

/* ===== 领取流程 ===== */
.flow-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.flow-item{
  position:relative;background:#fff;border:1px solid var(--c-border);border-radius:14px;
  padding:22px 18px;box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.flow-item:hover{transform:translateY(-4px);border-color:rgba(31,95,224,.3);box-shadow:var(--sh-2)}
.flow-item::after{
  content:"";position:absolute;right:-14px;top:38px;width:8px;height:2px;
  background:repeating-linear-gradient(90deg,#B9C9E4 0 4px,transparent 4px 8px);
}
.flow-item:last-child::after{display:none}
.flow-num{
  display:grid;place-items:center;width:34px;height:34px;border-radius:11px;
  background:var(--c-primary-light);color:var(--c-primary);
  font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;margin-bottom:14px;
}
.flow-item h3{font-size:16px;margin-bottom:8px}
.flow-item p{font-size:14px;line-height:1.7;color:var(--t-2)}

/* ===== 规则折叠区 ===== */
.rules{max-width:860px;margin:0 auto;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1)}
.rule-item+.rule-item{border-top:1px solid var(--c-border)}
.rule-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;
  padding:20px 24px;text-align:left;font-size:16px;font-weight:600;color:var(--t-1);
  transition:background-color var(--ease);
}
.rule-q:hover{background:#F6F9FF}
.rule-icon{position:relative;flex:0 0 auto;width:22px;height:22px;color:var(--c-primary);transition:transform .25s ease}
.rule-icon::before,.rule-icon::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.rule-icon::before{left:50%;top:3px;width:2px;height:16px;transform:translateX(-50%)}
.rule-icon::after{top:50%;left:3px;height:2px;width:16px;transform:translateY(-50%)}
.rule-item.is-open .rule-icon{transform:rotate(45deg)}
.rule-item.is-open .rule-q{color:var(--c-primary)}
.rule-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.rule-a-inner{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--t-2);max-width:700px}
.rule-a-inner strong{color:var(--t-1);font-weight:600}

/* ===== 核对清单 ===== */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.check-card{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-1)}
.check-card h3{display:flex;align-items:center;gap:10px;font-size:18px;margin-bottom:18px}
.check-card h3 i{color:var(--c-primary);font-size:16px}
.check-list li{
  position:relative;padding-left:30px;margin-bottom:14px;font-size:15px;line-height:1.7;color:var(--t-2);
}
.check-list li:last-child{margin-bottom:0}
.check-list li::before{
  content:"";position:absolute;left:0;top:5px;width:18px;height:18px;border-radius:6px;
  background:var(--c-primary-light);border:1.5px solid rgba(31,95,224,.35);
}
.check-list li::after{
  content:"";position:absolute;left:6px;top:9px;width:5px;height:9px;
  border-right:2px solid var(--c-primary);border-bottom:2px solid var(--c-primary);
  transform:rotate(40deg);
}

/* ===== CTA 条 ===== */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:44px;border-radius:var(--r-lg);color:#fff;
  background:linear-gradient(120deg,#1F5FE0 0%,#3B7BF0 55%,#6FA3FF 100%);
  box-shadow:var(--sh-3);
}
.cta-band h2{font-size:26px;color:#fff;margin-bottom:10px}
.cta-band p{font-size:15px;color:rgba(255,255,255,.86);max-width:560px}
.cta-band .btn{flex:0 0 auto}

/* ===== 相关链接 ===== */
.related-grid{margin:0 -12px}
.related-grid > .cell{padding:0 12px 24px}
.related-card{
  display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.related-card:hover{transform:translateY(-4px);border-color:rgba(31,95,224,.3);box-shadow:var(--sh-2)}
.related-media{aspect-ratio:16/10;background:#E8EEFA;overflow:hidden}
.related-media img{width:100%;height:100%;object-fit:cover}
.related-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.related-body h3{font-size:17px}
.related-body p{font-size:14px;line-height:1.7;color:var(--t-2)}
.notice-card{
  display:flex;flex-direction:column;justify-content:center;height:100%;
  background:var(--c-tint);border:1px dashed #C3D5F2;border-radius:var(--r-card);padding:24px;
}
.notice-card h3{display:flex;align-items:center;gap:10px;font-size:17px;margin-bottom:12px}
.notice-card h3 i{color:var(--c-accent)}
.notice-card p{font-size:14px;line-height:1.75;color:var(--t-2)}
.notice-card p+p{margin-top:10px}

/* ===== 页脚 ===== */
.site-footer{background:var(--c-tint);border-top:1px solid var(--c-border);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--t-1);margin-bottom:14px}
.footer-desc{font-size:14px;line-height:1.8;color:var(--t-2);max-width:330px;margin-bottom:18px}
.social-row{display:flex;gap:10px}
.social-row a{
  display:grid;place-items:center;width:36px;height:36px;border-radius:50%;
  background:#fff;border:1px solid var(--c-border);color:var(--t-2);
  transition:color var(--ease),border-color var(--ease),transform var(--ease);
}
.social-row a:hover{color:var(--c-primary);border-color:var(--c-primary);transform:translateY(-2px)}
.footer-col h3{font-size:15px;font-weight:600;color:var(--t-1);margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--t-2)}
.footer-col a:hover{color:var(--c-primary)}
.footer-col .plain{font-size:14px;color:var(--t-2)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:48px;padding:20px 0;border-top:1px solid var(--c-border);
  font-size:13px;color:var(--t-3);
}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .flow-grid{grid-template-columns:repeat(3,1fr)}
  .flow-item::after{display:none}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .main-nav{display:none}
  .header-cta{display:none}
  .nav-toggle{display:flex}
  .header-inner{height:64px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .page-hero h1{font-size:32px}
  .hero-figure img{height:240px}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .check-grid{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px}
  .cta-band .btn{width:100%}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (max-width:639px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .page-hero{padding:24px 0 40px}
  .page-hero h1{font-size:26px;line-height:1.3}
  .hero-lead{font-size:15px}
  .hero-figure{display:none}
  .btn{height:44px;padding:0 22px;font-size:15px}
  .reward-grid{margin:0 -8px}
  .reward-grid > .cell{padding:0 8px 16px}
  .reward-body{padding:14px;gap:8px}
  .reward-body h3{font-size:15px}
  .reward-desc{font-size:13px}
  .flow-grid{grid-template-columns:1fr}
  .section-head h2{font-size:22px}
  .rule-q{padding:18px;font-size:15px}
  .rule-a-inner{padding:0 18px 18px;font-size:14.5px}
  .cta-band{padding:26px 22px}
  .cta-band h2{font-size:21px}
  .check-card{padding:20px}
  .related-grid{margin:0 -8px}
  .related-grid > .cell{padding:0 8px 16px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px;margin-top:36px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reward-card:hover,.related-card:hover,.flow-item:hover,.btn:hover{transform:none}
}

/* roulang page: category3 */
:root{
  --brand:#1F5FE0;
  --brand-dark:#164AB8;
  --brand-light:#EDF3FF;
  --brand-mist:#F6F9FF;
  --accent:#FF8A3D;
  --accent-dark:#F2761F;
  --success:#21B58C;
  --danger:#E5484D;
  --text:#0E1B2E;
  --text-2:#4A5A72;
  --text-3:#8A98AC;
  --card:#FFFFFF;
  --bg:#F6F9FF;
  --border:#E3EAF5;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(23,54,110,.06);
  --sh-2:0 12px 28px rgba(23,54,110,.12);
  --sh-3:0 20px 48px rgba(23,54,110,.16);
  --font:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han 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);
  text-align:left;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,select,textarea{font-family:inherit;font-size:16px;color:inherit;}
svg{display:block;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 容器与板块 ---------- */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.section{padding:96px 0;}
.section--tight{padding:64px 0 96px;}
.section--mist{background:var(--brand-mist);}
.section--light{background:var(--brand-light);}
.section-head{margin-bottom:32px;}
.section-head--split{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-pill);
  background:var(--brand-light);
  color:var(--brand);
  font-size:13px;
  font-weight:600;
  letter-spacing:.2px;
}
.h2{
  font-size:28px;
  line-height:1.3;
  font-weight:700;
  letter-spacing:-.4px;
  color:var(--text);
}
.h3{
  font-size:20px;
  line-height:1.45;
  font-weight:600;
  letter-spacing:-.2px;
}
.lead{
  margin-top:12px;
  font-size:16px;
  line-height:1.8;
  color:var(--text-2);
  max-width:760px;
}
.text-link{
  font-size:15px;
  font-weight:600;
  color:var(--brand);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.text-link:hover{text-decoration:underline;}
.divider{height:1px;background:var(--border);border:0;margin:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  letter-spacing:.2px;
  white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{
  background:var(--brand);
  color:#fff;
  box-shadow:var(--sh-1);
}
.btn-primary:hover{
  background:var(--brand-dark);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:var(--sh-2);
}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-accent{
  background:linear-gradient(135deg,#FF9A4D 0%,#FF7A2F 100%);
  color:#fff;
  font-weight:700;
  box-shadow:0 6px 16px rgba(255,122,47,.24);
}
.btn-accent:hover{
  background:linear-gradient(135deg,#FF8A3D 0%,#F2761F 100%);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 12px 26px rgba(242,118,31,.32);
}
.btn-accent:active{transform:translateY(0);}
.btn-ghost{
  background:transparent;
  color:var(--brand);
  border:1.5px solid var(--brand);
}
.btn-ghost:hover{
  background:rgba(31,95,224,.08);
  color:var(--brand-dark);
}
.btn[disabled],.btn:disabled{
  opacity:.5;
  cursor:not-allowed;
  transform:none;
  box-shadow:none;
}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--border);
  transition:background-color .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom-color:transparent;
  box-shadow:var(--sh-2);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:72px;
  transition:height .24s ease;
}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  letter-spacing:-.3px;
  color:var(--text);
  flex-shrink:0;
}
.brand:hover{color:var(--text);}
.brand-text{white-space:nowrap;}
.main-nav{margin-left:auto;}
.main-nav ul{display:flex;align-items:center;gap:4px;}
.main-nav a{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  font-size:15px;
  font-weight:500;
  color:var(--text-2);
  border-radius:8px;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:2px;
  height:3px;
  border-radius:3px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .22s ease;
}
.main-nav a:hover{color:var(--brand);}
.main-nav a:hover::after{transform:scaleX(.45);}
.main-nav a.is-active{color:var(--brand);font-weight:600;}
.main-nav a.is-active::after{transform:scaleX(1);}
.header-cta{height:42px;padding:0 20px;font-size:14px;flex-shrink:0;}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:10px;
  border:1px solid var(--border);
  background:#fff;
  padding:0;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  margin-left:auto;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--text);
  transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 抽屉导航 ---------- */
.drawer-backdrop{
  position:fixed;
  inset:0;
  background:rgba(14,27,46,.42);
  z-index:70;
  opacity:0;
  pointer-events:none;
  transition:opacity .26s ease;
}
.drawer-backdrop.is-open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:80;
  background:#fff;
  border-bottom:1px solid var(--border);
  box-shadow:var(--sh-3);
  transform:translateY(-102%);
  transition:transform .28s ease;
  padding:16px 0 20px;
  max-height:100vh;
  overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:0 16px 12px;
  border-bottom:1px solid var(--border);
}
.drawer-nav ul{padding:4px 0;}
.drawer-nav li{border-bottom:1px solid var(--border);}
.drawer-nav a{
  display:flex;
  align-items:center;
  height:48px;
  padding:0 16px;
  font-size:16px;
  font-weight:500;
  color:var(--text-2);
}
.drawer-nav a.is-active{color:var(--brand);font-weight:600;background:var(--brand-light);}
.drawer-cta{
  margin:16px 16px 0;
  width:calc(100% - 32px);
}
body.no-scroll{overflow:hidden;}

/* ---------- 页头 ---------- */
.page-hero{
  background:linear-gradient(180deg,#FFFFFF 0%,var(--brand-mist) 100%);
  border-bottom:1px solid var(--border);
  padding:40px 0 56px;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--text-3);
  margin-bottom:24px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#C3CEDE;}
.breadcrumb .current{color:var(--text-2);}
.page-hero-grid{
  display:grid;
  grid-template-columns:1.35fr .85fr;
  gap:48px;
  align-items:center;
}
.page-hero h1{
  font-size:40px;
  line-height:1.2;
  font-weight:700;
  letter-spacing:-.5px;
  margin-bottom:16px;
}
.page-hero .hero-note{
  font-size:16px;
  line-height:1.8;
  color:var(--text-2);
  max-width:620px;
}
.tag-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:24px;
}
.tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-pill);
  background:#fff;
  border:1px solid var(--border);
  color:var(--text-2);
  font-size:13px;
  font-weight:500;
}
.tag--brand{background:var(--brand-light);border-color:transparent;color:var(--brand);}
.page-hero-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-3);
  position:relative;
  aspect-ratio:4/3;
  background:#DCE5F2;
}
.page-hero-media img{width:100%;height:100%;object-fit:cover;}
.page-hero-media .float-card{
  position:absolute;
  right:16px;
  bottom:16px;
  background:rgba(255,255,255,.95);
  border-radius:12px;
  padding:10px 14px;
  box-shadow:var(--sh-2);
  font-size:13px;
  color:var(--text-2);
  display:flex;
  align-items:center;
  gap:8px;
}
.dot-ok{
  width:10px;
  height:10px;
  border-radius:50%;
  background:var(--success);
  box-shadow:0 0 0 4px rgba(33,181,140,.16);
  flex-shrink:0;
}

/* ---------- 问题类型卡 ---------- */
.type-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
}
.type-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  padding:24px 22px;
  box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.type-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-2);
  border-color:rgba(31,95,224,.3);
}
.type-icon{
  width:44px;
  height:44px;
  border-radius:12px;
  background:var(--brand-light);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--brand);
  margin-bottom:16px;
}
.type-card h3{
  font-size:18px;
  line-height:1.4;
  font-weight:600;
  margin-bottom:8px;
  letter-spacing:-.2px;
}
.type-card p{
  font-size:14px;
  line-height:1.75;
  color:var(--text-2);
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-col + .faq-col{margin-top:16px;}
.faq-item{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  margin-bottom:16px;
  overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item:hover{background:#F6F9FF;}
.faq-item.is-open{
  border-color:rgba(31,95,224,.32);
  box-shadow:var(--sh-2);
  background:#fff;
}
.faq-q{
  width:100%;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:16px;
  padding:20px 22px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  line-height:1.6;
  color:var(--text);
}
.faq-q:focus-visible{outline-offset:-2px;}
.faq-icon{
  position:relative;
  width:22px;
  height:22px;
  flex-shrink:0;
  margin-top:2px;
  border-radius:50%;
  background:var(--brand-light);
  transition:transform .24s ease,background-color .24s ease;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  top:50%;
  left:50%;
  width:10px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  transform:translate(-50%,-50%);
  transition:opacity .2s ease;
}
.faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--brand);}
.faq-item.is-open .faq-icon::before,
.faq-item.is-open .faq-icon::after{background:#fff;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a-inner{
  padding:0 22px 22px;
  border-top:1px solid var(--border);
  padding-top:16px;
  margin:0 0;
}
.faq-a-inner p{
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
}
.faq-a-inner p + p{margin-top:10px;}

/* ---------- 反馈表单 ---------- */
.feedback-grid{
  display:grid;
  grid-template-columns:1.5fr .9fr;
  gap:24px;
  align-items:start;
}
.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:28px;
}
.form-row{margin-bottom:20px;}
.form-row:last-of-type{margin-bottom:24px;}
.form-label{
  display:block;
  font-size:14px;
  font-weight:600;
  color:var(--text-2);
  margin-bottom:8px;
}
.form-label .req{color:var(--danger);margin-left:2px;}
.form-control{
  width:100%;
  height:48px;
  padding:0 14px;
  border:1.5px solid var(--border);
  border-radius:10px;
  background:#fff;
  color:var(--text);
  transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
textarea.form-control{
  height:auto;
  min-height:140px;
  padding:12px 14px;
  line-height:1.7;
  resize:vertical;
}
select.form-control{
  appearance:none;
  -webkit-appearance:none;
  background-image:url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%234A5A72' stroke-width='1.75' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right 14px center;
  padding-right:40px;
}
.form-control::placeholder{color:#A9B5C6;}
.form-control:hover{border-color:#C9D6E8;}
.form-control:focus{
  outline:none;
  border-color:var(--brand);
  border-width:2px;
  box-shadow:0 0 0 4px rgba(31,95,224,.14);
}
.form-grid-2{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
}
.form-tip{
  margin-top:14px;
  font-size:14px;
  line-height:1.7;
  color:var(--text-3);
  min-height:24px;
}
.form-tip.is-ok{color:var(--success);font-weight:600;}
.form-tip.is-err{color:var(--danger);font-weight:600;}
.side-card{
  background:var(--brand-light);
  border:1px solid #DCE7FB;
  border-radius:var(--r-card);
  padding:24px;
}
.side-card h3{
  font-size:18px;
  font-weight:600;
  margin-bottom:14px;
  letter-spacing:-.2px;
}
.side-list li{
  display:flex;
  gap:10px;
  font-size:14px;
  line-height:1.75;
  color:var(--text-2);
  padding:10px 0;
  border-bottom:1px dashed #D3E0F7;
}
.side-list li:last-child{border-bottom:0;padding-bottom:0;}
.side-list svg{flex-shrink:0;margin-top:4px;color:var(--brand);}

/* ---------- 相关链接卡 ---------- */
.link-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.link-card{
  display:block;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  color:var(--text);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.link-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-2);
  border-color:rgba(31,95,224,.3);
  color:var(--text);
}
.link-card figure{
  margin:0;
  aspect-ratio:4/3;
  background:#DCE5F2;
  overflow:hidden;
}
.link-card figure img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .3s ease;
}
.link-card:hover figure img{transform:scale(1.03);}
.link-card-body{padding:20px 22px 22px;}
.link-card-body h3{
  font-size:18px;
  line-height:1.45;
  font-weight:600;
  margin-bottom:8px;
  letter-spacing:-.2px;
}
.link-card-body p{
  font-size:14px;
  line-height:1.75;
  color:var(--text-2);
  margin-bottom:14px;
}
.link-card .text-link{font-size:14px;}

/* ---------- CTA 条 ---------- */
.cta-band{
  border-radius:var(--r-lg);
  background:linear-gradient(120deg,#164AB8 0%,#1F5FE0 60%,#3B7BF0 100%);
  color:#fff;
  padding:40px 44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  box-shadow:var(--sh-2);
}
.cta-band h2{
  font-size:24px;
  line-height:1.35;
  font-weight:700;
  letter-spacing:-.3px;
  margin-bottom:8px;
}
.cta-band p{
  font-size:15px;
  line-height:1.75;
  color:rgba(255,255,255,.86);
  max-width:640px;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--brand-mist);
  border-top:1px solid var(--border);
  padding:64px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  letter-spacing:-.3px;
  color:var(--text);
}
.footer-desc{
  margin-top:16px;
  font-size:14px;
  line-height:1.8;
  color:var(--text-2);
  max-width:320px;
}
.social-row{
  display:flex;
  gap:10px;
  margin-top:20px;
}
.social-row a{
  width:36px;
  height:36px;
  border-radius:50%;
  background:#fff;
  border:1px solid var(--border);
  color:var(--text-2);
  display:flex;
  align-items:center;
  justify-content:center;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.social-row a:hover{
  background:var(--brand);
  border-color:var(--brand);
  color:#fff;
  transform:translateY(-2px);
}
.footer-col h3{
  font-size:15px;
  font-weight:600;
  color:var(--text);
  margin-bottom:16px;
  letter-spacing:-.2px;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{
  font-size:14px;
  color:var(--text-2);
}
.footer-col ul li a:hover{color:var(--brand);}
.footer-col ul li .meta{
  font-size:14px;
  color:var(--text-2);
  line-height:1.7;
}
.footer-bottom{
  margin-top:48px;
  border-top:1px solid var(--border);
  padding:20px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.footer-bottom p{
  font-size:13px;
  line-height:1.7;
  color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media screen and (min-width:1440px){
  .container{max-width:1280px;}
}
@media screen and (max-width:1199.98px){
  .page-hero-grid{grid-template-columns:1fr;}
  .page-hero-media{display:none !important;}
  .feedback-grid{grid-template-columns:1fr;}
}
@media screen and (max-width:1023.98px){
  .main-nav{display:none;}
  .header-cta{display:none;}
  .nav-toggle{display:flex;}
  .section{padding:72px 0;}
  .section--tight{padding:48px 0 72px;}
  .type-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
  .link-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .page-hero h1{font-size:34px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px;}
  .cta-band .btn{width:100%;}
}
@media screen and (max-width:767.98px){
  .container{padding:0 20px;}
  .page-hero{padding:28px 0 40px;}
  .page-hero h1{font-size:30px;letter-spacing:-.4px;}
  .h2{font-size:24px;}
  .section-head--split{align-items:flex-start;}
  .form-grid-2{grid-template-columns:1fr;gap:0;}
  .form-grid-2 .form-row{margin-bottom:20px;}
}
@media screen and (max-width:639.98px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .section--tight{padding:40px 0 56px;}
  .header-inner{height:64px;}
  .brand-text{font-size:15px;}
  .page-hero h1{font-size:27px;line-height:1.3;}
  .hero-note{font-size:15px;}
  .type-grid{grid-template-columns:1fr;gap:16px;}
  .link-grid{grid-template-columns:1fr;gap:16px;}
  .card{padding:22px 18px;}
  .side-card{padding:20px 18px;}
  .btn{height:44px;padding:0 20px;width:100%;}
  .cta-band{padding:26px 20px;border-radius:16px;}
  .cta-band h2{font-size:20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .faq-q{padding:16px 16px;font-size:15px;}
  .faq-a-inner{padding:0 16px 18px;padding-top:14px;}
  .page-hero-media .float-card{display:none;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .type-card:hover,.link-card:hover,.btn:hover,.social-row a:hover{transform:none;}
}