/* roulang page: index */
/* ============ 1. 设计变量 ============ */
:root{
  --brand:#5B3DF5;
  --brand-dark:#4626D6;
  --brand-soft:#EFEBFF;
  --promo:#FF5A3C;
  --lime:#D9F24A;
  --mint:#17E0A8;
  --bg:#F7F8FC;
  --card:#FFFFFF;
  --ink:#12142B;
  --text:#1B1E34;
  --muted:#6C7186;
  --line:#E6E8F2;
  --line-soft:#E9EBF5;
  --r-card:16px;
  --r-img:14px;
  --r-btn:10px;
  --shadow:0 1px 2px rgba(18,20,43,.04),0 14px 30px -20px rgba(18,20,43,.28);
  --shadow-lg:0 6px 14px rgba(18,20,43,.06),0 28px 46px -24px rgba(18,20,43,.34);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --mono:"SF Mono",ui-monospace,"JetBrains Mono",Menlo,Consolas,monospace;
}

/* ============ 2. Reset / 基础 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-dark);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{background:none;border:0;padding:0;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
h1,h2,h3,h4{line-height:1.3;color:var(--ink);font-weight:700;}
p{color:var(--text);}
::selection{background:rgba(91,61,245,.18);}
body.no-scroll{overflow:hidden;}
.grid-container{max-width:1240px;padding-left:20px;padding-right:20px;margin-left:auto;margin-right:auto;}

/* ============ 3. 通用文字与板块 ============ */
.sec{padding:72px 0;}
.sec-tight{padding:56px 0;}
.sec-head{margin-bottom:32px;}
.sec-head h2{font-size:clamp(24px,3vw,36px);font-weight:700;letter-spacing:-.3px;}
.sec-head .sec-sub{margin-top:12px;color:var(--muted);font-size:16px;max-width:760px;}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.sec-more{font-size:15px;font-weight:600;color:var(--brand);white-space:nowrap;}
.sec-more:hover{color:var(--brand-dark);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.4px;color:var(--brand);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--brand);}
.on-dark .eyebrow{color:var(--lime);}
.on-dark .eyebrow::before{background:var(--lime);}

/* ============ 4. 徽章 / 按钮 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);line-height:1.6;
}
.badge-promo{background:var(--promo);color:#fff;}
.badge-lime{background:var(--lime);color:var(--ink);}
.badge-mint{background:var(--mint);color:var(--ink);}
.badge-outline{background:transparent;border:1px solid rgba(255,255,255,.3);color:rgba(255,255,255,.85);}
.dot{width:8px;height:8px;border-radius:50%;background:var(--mint);display:inline-block;box-shadow:0 0 0 4px rgba(23,224,168,.18);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;line-height:1;border:1.5px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),filter .18s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);
  color:#fff;box-shadow:0 10px 24px -14px rgba(91,61,245,.9);
}
.btn-primary:hover{color:#fff;transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 16px 32px -16px rgba(91,61,245,.95);}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);}
.btn-secondary{background:#fff;border-color:#D8DBEA;color:var(--ink);}
.btn-secondary:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.42);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 20px;font-size:15px;border-radius:9px;}
.btn-block{width:100%;}
.btn:focus-visible{outline:3px solid rgba(91,61,245,.3);outline-offset:2px;}
.btn[disabled],.btn.is-disabled{background:#C9CCDA;color:#fff;border-color:#C9CCDA;box-shadow:none;cursor:not-allowed;transform:none;}
.btn-link{color:var(--brand);font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:6px;}
.btn-link:hover{gap:10px;}

/* ============ 5. 顶栏工具条 ============ */
.topbar{background:var(--ink);color:rgba(255,255,255,.78);font-size:13px;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:36px;gap:20px;}
.topbar-status{display:inline-flex;align-items:center;gap:8px;}
.topbar-links{display:inline-flex;gap:22px;}
.topbar-links a{color:rgba(255,255,255,.78);}
.topbar-links a:hover{color:#fff;}

/* ============ 6. 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;background:#fff;
  border-bottom:1px solid var(--line-soft);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 4px 16px -8px rgba(18,20,43,.18);}
.nav-inner{display:flex;align-items:center;gap:30px;height:72px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:36px;height:36px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  display:grid;place-items:center;color:#fff;
}
.logo-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.2px;}
.nav-main{flex:0 1 auto;}
.nav-list{display:flex;align-items:center;gap:26px;}
.nav-list a{
  position:relative;display:block;padding:24px 0;font-size:15px;font-weight:500;color:#3C4059;
}
.nav-list a::after{
  content:"";position:absolute;left:0;right:0;bottom:16px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.nav-list a:hover{color:var(--brand);}
.nav-list a:hover::after{transform:scaleX(1);}
.nav-list a.is-active{color:var(--brand);font-weight:600;}
.nav-list a.is-active::after{transform:scaleX(1);}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:14px;}
.nav-search{position:relative;width:240px;}
.nav-search svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:#9AA0B4;pointer-events:none;}
.nav-search input{
  width:100%;height:40px;border-radius:999px;border:1.5px solid transparent;
  background:#F2F3F9;padding:0 16px 0 40px;font-size:14px;outline:none;
  transition:background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search input::placeholder{color:#9AA0B4;}
.nav-search input:focus{background:#fff;border-color:var(--brand);box-shadow:0 0 0 4px rgba(91,61,245,.12);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  align-items:center;justify-content:center;color:var(--ink);background:#fff;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(18,20,43,.45);z-index:110;
  opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;width:300px;max-width:86vw;height:100%;z-index:120;
  background:#fff;padding:20px;overflow-y:auto;
  transform:translateX(100%);transition:transform .3s var(--ease);
  box-shadow:-20px 0 40px -24px rgba(18,20,43,.4);
}
.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(--line);}
.drawer-close{width:36px;height:36px;border-radius:9px;border:1px solid var(--line);display:grid;place-items:center;color:var(--ink);}
.drawer-nav{margin:12px 0 20px;}
.drawer-nav a{display:flex;align-items:center;height:48px;font-size:15px;color:var(--text);border-bottom:1px solid var(--line);}
.drawer-nav a.is-active{color:var(--brand);font-weight:600;}
.drawer-search{position:relative;margin-bottom:16px;}
.drawer-search input{width:100%;height:44px;border-radius:10px;border:1.5px solid #E0E3EF;padding:0 14px;font-size:14px;outline:none;background:#fff;}
.drawer-search input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(91,61,245,.12);}
.drawer .btn{width:100%;}

/* ============ 7. Hero ============ */
.hero{position:relative;background:var(--ink);color:#fff;overflow:hidden;padding:72px 0 76px;}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:54px 54px;
}
.hero::after{
  content:"";position:absolute;right:-180px;top:-240px;width:640px;height:640px;pointer-events:none;
  background:radial-gradient(circle,rgba(91,61,245,.55),rgba(91,61,245,0) 66%);
}
.hero .grid-container{position:relative;z-index:2;}
.hero h1{
  color:#fff;font-size:clamp(30px,4.2vw,52px);font-weight:800;line-height:1.15;
  letter-spacing:-.5px;margin:18px 0 18px;
}
.hero-lead{color:rgba(255,255,255,.76);font-size:17px;max-width:560px;line-height:1.85;}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin:30px 0 40px;}
.hero-stats{display:flex;gap:44px;flex-wrap:wrap;padding-top:26px;border-top:1px solid rgba(255,255,255,.12);}
.hero-stats li{display:flex;flex-direction:column;gap:4px;}
.hero-stats strong{font-size:28px;font-weight:800;color:#fff;font-family:var(--mono);letter-spacing:-.5px;}
.hero-stats span{font-size:13px;color:rgba(255,255,255,.6);}
.hero-visual{position:relative;padding-left:12px;}
.hero-visual img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:20px;
  border:1px solid rgba(255,255,255,.12);
}
.hero-float{
  position:absolute;left:-18px;bottom:26px;display:flex;align-items:center;gap:12px;
  background:rgba(11,12,26,.82);border:1px solid rgba(255,255,255,.16);
  border-radius:14px;padding:12px 18px;backdrop-filter:blur(4px);
}
.hero-float strong{display:block;font-size:14px;color:#fff;}
.hero-float span{display:block;font-size:12px;color:rgba(255,255,255,.6);}

/* ============ 8. 阶梯权益 ============ */
.ladder{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.ladder-item{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 24px;box-shadow:var(--shadow);transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.ladder-item:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(91,61,245,.3);}
.ladder-num{
  display:grid;place-items:center;width:44px;height:44px;border-radius:12px;
  background:var(--lime);color:var(--ink);font-family:var(--mono);font-weight:700;font-size:16px;
}
.ladder-item h3{margin:18px 0 8px;font-size:20px;}
.ladder-threshold{font-size:13px;color:var(--muted);margin-bottom:16px;}
.ladder-list li{position:relative;padding-left:20px;font-size:15px;color:#3C4059;line-height:1.75;margin-bottom:8px;}
.ladder-list li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--brand);}
.ladder-item .btn{margin-top:20px;}
.ladder-line{display:none;}

/* ============ 9. 方案对照 ============ */
.compare-note{color:var(--muted);font-size:15px;margin-bottom:28px;}
.plan-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.plan{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:26px 22px;
  display:flex;flex-direction:column;box-shadow:var(--shadow);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.plan:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);}
.plan-featured{background:#F6F4FF;border-color:var(--brand);position:relative;}
.plan-tag{
  position:absolute;top:-12px;left:22px;background:var(--brand);color:#fff;
  font-size:12px;font-weight:600;padding:3px 12px;border-radius:999px;
}
.plan h3{font-size:20px;margin-bottom:6px;}
.plan .plan-price{font-size:13px;color:var(--muted);margin-bottom:18px;}
.plan .plan-body{display:flex;flex-direction:column;gap:10px;margin-bottom:22px;}
.plan-row{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:#3C4059;line-height:1.7;}
.plan-row svg{flex:0 0 auto;margin-top:5px;color:var(--brand);}
.plan-row.is-off{color:#A7ABC0;}
.plan-row.is-off svg{color:#C9CCDA;}
.plan .btn{margin-top:auto;}

/* ============ 10. 限时入口 ============ */
.countdown{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(115deg,var(--promo) 0%,#E0442A 38%,var(--ink) 100%);
}
.countdown::after{
  content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;
  background:repeating-linear-gradient(45deg,rgba(255,255,255,.12) 0 10px,transparent 10px 22px);
  transform:rotate(12deg);pointer-events:none;
}
.countdown-inner{
  position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;
  gap:36px;flex-wrap:wrap;padding:44px 0;
}
.countdown h2{color:#fff;font-size:clamp(22px,2.6vw,32px);margin-bottom:10px;}
.countdown p{color:rgba(255,255,255,.82);font-size:15px;max-width:520px;}
.count-timer{display:flex;gap:12px;}
.count-cell{
  width:64px;padding:10px 0;border-radius:12px;background:rgba(11,12,26,.42);
  border:1px solid rgba(255,255,255,.16);text-align:center;
}
.count-cell strong{display:block;font-family:var(--mono);font-size:24px;font-weight:700;color:#fff;letter-spacing:-1px;}
.count-cell span{display:block;font-size:12px;color:rgba(255,255,255,.68);}

/* ============ 11. 最新信息（CMS） ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  display:flex;flex-direction:column;box-shadow:var(--shadow);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(91,61,245,.32);}
.news-card__media{display:block;overflow:hidden;background:#EFEBFF;}
.news-card__media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s var(--ease);}
.news-card:hover .news-card__media img{transform:scale(1.04);}
.news-card__body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto;}
.news-card__title{font-size:18px;line-height:1.5;}
.news-card__title a{
  color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__title a:hover{color:var(--brand);}
.news-card__excerpt{
  font-size:15px;color:var(--muted);line-height:1.75;
  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;font-size:13px;color:var(--muted);
}
.news-card__more{color:var(--brand);font-weight:600;}
.empty-state{
  text-align:center;background:var(--card);border:1px dashed var(--line);
  border-radius:var(--r-card);padding:56px 24px;
}
.empty-state svg{color:#C3C7DA;margin-bottom:14px;}
.empty-state p{color:var(--muted);font-size:16px;margin-bottom:22px;}
.empty-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}

/* ============ 12. 咨询表单 ============ */
.consult-wrap{
  background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);
  overflow:hidden;display:grid;grid-template-columns:0.85fr 1.15fr;
}
.consult-aside{background:var(--ink);color:#fff;padding:44px 36px;position:relative;overflow:hidden;}
.consult-aside::after{
  content:"";position:absolute;left:-70px;bottom:-90px;width:260px;height:260px;
  background:radial-gradient(circle,rgba(91,61,245,.6),transparent 68%);
}
.consult-aside h2{color:#fff;font-size:26px;margin-bottom:16px;position:relative;z-index:2;}
.consult-aside p{color:rgba(255,255,255,.74);font-size:15px;position:relative;z-index:2;}
.consult-info{margin-top:30px;position:relative;z-index:2;}
.consult-info li{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-top:1px solid rgba(255,255,255,.12);font-size:14px;color:rgba(255,255,255,.8);}
.consult-info strong{color:#fff;font-weight:600;}
.consult-form{padding:44px 36px;}
.field{margin-bottom:20px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;height:48px;border-radius:var(--r-btn);border:1.5px solid #E0E3EF;background:#fff;
  padding:0 14px;font-size:15px;outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:120px;padding:12px 14px;resize:vertical;line-height:1.75;}
.field input::placeholder,.field textarea::placeholder{color:#9AA0B4;}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(91,61,245,.12);}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--promo);}
.field .field-tip{font-size:13px;color:var(--promo);margin-top:6px;display:none;}
.field.has-error .field-tip{display:block;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.form-privacy{font-size:12px;color:var(--muted);margin-top:14px;line-height:1.7;}

/* ============ 13. FAQ ============ */
.faq-list{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow);}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;min-height:60px;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:18px 24px;text-align:left;font-size:17px;font-weight:600;color:var(--ink);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.faq-q:hover{background:#FAFBFF;color:var(--brand);}
.faq-q:focus-visible{outline:3px solid rgba(91,61,245,.3);outline-offset:-3px;}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 auto;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform .25s var(--ease),opacity .25s var(--ease);
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
.faq-a-inner{
  padding:4px 24px 22px 27px;border-left:3px solid var(--brand);background:#FAFBFF;
  font-size:15px;color:#3C4059;line-height:1.85;
}

/* ============ 14. CTA 条 ============ */
.cta-band{background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);color:#fff;border-radius:20px;padding:44px 40px;}
.cta-band-inner{display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);margin-bottom:8px;}
.cta-band p{color:rgba(255,255,255,.82);font-size:15px;max-width:600px;}
.cta-band-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-band .btn-secondary{background:#fff;border-color:#fff;color:var(--brand);}
.cta-band .btn-secondary:hover{color:var(--brand-dark);transform:translateY(-2px);}

/* ============ 15. 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{color:rgba(255,255,255,.62);font-size:14px;margin-top:16px;max-width:320px;line-height:1.8;}
.footer-col h3{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:15px;color:rgba(255,255,255,.72);display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease);}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.52);
}
.footer-bottom a{color:rgba(255,255,255,.52);}
.footer-bottom a:hover{color:#fff;}

/* ============ 16. 响应式 ============ */
@media (max-width:1023px){
  .topbar{display:none;}
  .nav-main,.nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .sec{padding:56px 0;}
  .hero{padding:56px 0 60px;}
  .hero-visual{padding-left:0;margin-top:32px;}
  .hero-float{left:16px;bottom:16px;}
  .ladder{grid-template-columns:repeat(2,1fr);}
  .plan-grid{grid-template-columns:repeat(2,1fr);}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .consult-wrap{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .hero-stats{gap:28px;}
  .countdown-inner{flex-direction:column;align-items:flex-start;}
  .cta-band{padding:34px 24px;}
  .consult-aside,.consult-form{padding:32px 22px;}
}
@media (max-width:639px){
  .grid-container{padding-left:16px;padding-right:16px;}
  .sec{padding:48px 0;}
  .ladder{grid-template-columns:1fr;}
  .plan-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .hero-cta .btn{width:100%;}
  .count-cell{width:56px;}
  .faq-q{font-size:16px;padding:16px 18px;}
  .faq-a-inner{padding:4px 18px 20px 21px;}
}

/* roulang page: article */
/* ========== 设计变量 ========== */
:root{
  --brand:#5B3DF5;
  --brand-dark:#4626D6;
  --brand-soft:#EFEBFF;
  --brand-soft-2:#F6F4FF;
  --promo:#FF5A3C;
  --lime:#D9F24A;
  --mint:#17E0A8;
  --bg:#F7F8FC;
  --card:#FFFFFF;
  --ink:#12142B;
  --text:#1B1E34;
  --muted:#6C7186;
  --faint:#9AA0B4;
  --line:#E6E8F2;
  --line-soft:#EDEFF7;
  --field:#F2F3F9;
  --r-card:16px;
  --r-img:14px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(18,20,43,.04), 0 14px 30px -20px rgba(18,20,43,.28);
  --sh-hover:0 8px 16px rgba(18,20,43,.06), 0 26px 46px -24px rgba(18,20,43,.34);
  --sh-nav:0 4px 16px -8px rgba(18,20,43,.18);
  --sec:72px;
  --gap:32px;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-num:ui-monospace,"SF Mono","Roboto Mono",Menlo,Consolas,monospace;
}
/* ========== 基础 reset ========== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:100px}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--font-sans);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img,svg{max-width:100%}
img{display:block;height:auto;border:0}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,border-color .2s ease,transform .2s ease}
a:hover{color:var(--brand-dark)}
h1,h2,h3,h4,p,figure,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--text)}
:focus-visible{outline:3px solid rgba(91,61,245,.32);outline-offset:2px;border-radius:6px}
.grid-container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
.section{padding:var(--sec) 0}
.section-tight{padding:calc(var(--sec) * .6) 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:var(--gap)}
.section-head h2{font-size:clamp(24px,3vw,36px);font-weight:700;line-height:1.25;color:var(--ink);letter-spacing:-.4px}
.section-head p{margin-top:10px;color:var(--muted);font-size:15px;max-width:620px}
.link-more{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.link-more:hover{gap:10px}
/* ========== 顶部导航 ========== */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid #E9EBF5;transition:box-shadow .25s ease}
.site-header.is-scrolled{box-shadow:var(--sh-nav)}
.nav-inner{display:flex;align-items:center;gap:26px;min-height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto}
.logo:hover{color:var(--ink)}
.logo-mark{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-dark));flex:0 0 auto}
.logo-text{font-size:18px;font-weight:700;letter-spacing:-.2px;white-space:nowrap}
.nav-main{margin-left:6px}
.nav-list{display:flex;align-items:center;gap:26px}
.nav-list a{position:relative;display:inline-block;padding:26px 0;font-size:15px;font-weight:500;color:var(--text)}
.nav-list a::after{content:"";position:absolute;left:0;right:0;bottom:16px;height:2px;border-radius:2px;background:var(--brand);transform:scaleX(0);transform-origin:center;transition:transform .22s ease}
.nav-list a:hover{color:var(--brand)}
.nav-list a:hover::after{transform:scaleX(1)}
.nav-list a.is-active{color:var(--brand);font-weight:600}
.nav-list a.is-active::after{transform:scaleX(1)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-search{display:flex;align-items:center;gap:8px;width:240px;height:40px;padding:0 14px;border-radius:var(--r-pill);background:var(--field);color:var(--muted);border:1.5px solid transparent;transition:background .2s ease,border-color .2s ease,box-shadow .2s ease}
.nav-search:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 4px rgba(91,61,245,.12)}
.nav-search input{border:0;background:transparent;outline:none;width:100%;font-size:14px}
.nav-search input::placeholder{color:var(--faint)}
.nav-toggle{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink);align-items:center;justify-content:center;transition:border-color .2s ease,color .2s ease}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}
/* ========== 按钮 / 徽章 ========== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1.5px solid transparent;transition:transform .18s ease,box-shadow .18s ease,filter .18s ease,color .18s ease,border-color .18s ease,background .18s ease;white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff;box-shadow:0 10px 22px -14px rgba(91,61,245,.9)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 30px -14px rgba(91,61,245,.95);filter:brightness(1.06)}
.btn-primary:active{transform:translateY(0);filter:brightness(.95)}
.btn-outline{background:#fff;color:var(--text);border-color:#D8DBEA}
.btn-outline:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.42)}
.btn-ghost:hover{color:#fff;border-color:#fff;background:rgba(255,255,255,.1)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{background:#C9CCDA;color:#fff;box-shadow:none;transform:none;cursor:not-allowed}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:var(--r-pill);font-size:12px;font-weight:600;line-height:1.6}
.badge-brand{background:var(--brand-soft);color:var(--brand)}
.badge-promo{background:var(--promo);color:#fff}
.badge-mint{background:rgba(23,224,168,.18);color:#0E9C76}
.badge-lime{background:rgba(217,242,74,.4);color:#4C6A00}
.dot{width:7px;height:7px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 3px rgba(23,224,168,.22);display:inline-block}
/* ========== 面包屑 ========== */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line-soft)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:16px 0;font-size:13px;color:var(--muted)}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#C6CADB}
.crumb .current{color:var(--ink);font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:52ch}
/* ========== 文章头部 ========== */
.article-head{background:#fff;padding:38px 0 34px;border-bottom:1px solid var(--line-soft);position:relative;overflow:hidden}
.article-head::before{content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(91,61,245,.14),rgba(91,61,245,0) 68%);pointer-events:none}
.article-head-inner{position:relative;max-width:860px}
.article-title{font-size:clamp(27px,3.5vw,42px);font-weight:800;line-height:1.24;letter-spacing:-.5px;color:var(--ink);margin:16px 0 20px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;font-size:13px;color:var(--muted)}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px}
.article-meta svg{color:var(--faint)}
/* ========== 文章主体 ========== */
.article-main{padding:44px 0 0}
.article-cover{margin:0 0 34px;border-radius:18px;overflow:hidden;border:1px solid var(--line);background:linear-gradient(135deg,var(--brand-soft),#FDFDFF);aspect-ratio:16/9}
.article-cover img{width:100%;height:100%;object-fit:cover}
.article-body{max-width:800px;font-size:17px;line-height:1.9;color:var(--text)}
.article-body h2{position:relative;font-size:clamp(21px,2.4vw,28px);font-weight:700;line-height:1.4;color:var(--ink);margin:44px 0 18px;padding-left:16px}
.article-body h2::before{content:"";position:absolute;left:0;top:.26em;width:4px;height:1.05em;border-radius:var(--r-pill);background:var(--brand)}
.article-body h3{font-size:20px;font-weight:600;color:var(--ink);margin:30px 0 12px;line-height:1.5}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink);margin:24px 0 10px}
.article-body p{margin:0 0 18px}
.article-body a{text-decoration:underline;text-decoration-thickness:1.5px;text-underline-offset:3px}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:4px}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul li::before{content:"";position:absolute;left:2px;top:.68em;width:7px;height:7px;border-radius:50%;background:var(--brand);opacity:.55}
.article-body ol{counter-reset:li;padding-left:0}
.article-body ol li{position:relative;padding-left:32px;margin-bottom:10px;counter-increment:li}
.article-body ol li::before{content:counter(li);position:absolute;left:0;top:.28em;width:20px;height:20px;border-radius:6px;background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:700;display:grid;place-items:center;font-family:var(--font-num)}
.article-body img{border-radius:12px;margin:24px auto}
.article-body figure{margin:24px 0}
.article-body figcaption,.article-body .img-cap{font-size:13px;color:var(--faint);text-align:center;margin-top:10px}
.article-body blockquote{margin:26px 0;padding:18px 22px;border-left:4px solid var(--brand);background:#FAFBFF;border-radius:0 12px 12px 0;color:var(--muted);font-size:16px}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.article-body th{background:var(--field);color:var(--ink);font-weight:600;text-align:left;padding:12px 14px;border-bottom:1px solid var(--line)}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--line-soft);color:var(--text)}
.article-body tbody tr:nth-child(even) td{background:#FAFAFE}
.article-body code{font-family:var(--font-num);background:var(--field);padding:2px 6px;border-radius:6px;font-size:14px;color:var(--brand-dark)}
/* ========== 侧栏 ========== */
.article-side{display:flex;flex-direction:column;gap:22px;position:sticky;top:96px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-card);transition:box-shadow .24s ease,transform .24s ease}
.side-card:hover{box-shadow:var(--sh-hover)}
.side-title{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:700;color:var(--ink);margin-bottom:16px}
.side-title::before{content:"";width:4px;height:14px;border-radius:var(--r-pill);background:var(--brand)}
.side-card.is-dark{background:var(--ink);border-color:rgba(255,255,255,.08);color:#fff}
.side-card.is-dark .side-title{color:#fff}
.side-card.is-dark .side-title::before{background:var(--lime)}
.side-card.is-dark p{color:rgba(255,255,255,.68);font-size:14px;line-height:1.75;margin-bottom:16px}
.mini-list li{display:flex;gap:12px;align-items:flex-start}
.mini-list li + li{margin-top:14px;padding-top:14px;border-top:1px dashed var(--line)}
.mini-thumb{flex:0 0 64px;width:64px;height:64px;border-radius:10px;overflow:hidden;background:var(--brand-soft)}
.mini-thumb img{width:100%;height:100%;object-fit:cover}
.mini-title{display:block;font-size:14px;font-weight:600;color:var(--ink);line-height:1.55;transition:color .2s ease}
.mini-title:hover{color:var(--brand)}
.mini-meta{display:block;font-size:12px;color:var(--faint);margin-top:5px}
.rank-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px}
.rank-list li + li{margin-top:12px}
.rank-num{flex:0 0 22px;width:22px;height:22px;border-radius:6px;background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:700;display:grid;place-items:center;font-family:var(--font-num);margin-top:4px}
.rank-list a{color:var(--muted);line-height:1.65}
.rank-list a:hover{color:var(--brand)}
.check-list li{position:relative;padding-left:26px;font-size:14px;color:var(--muted);line-height:1.7}
.check-list li + li{margin-top:10px}
.check-list li::before{content:"";position:absolute;left:0;top:6px;width:16px;height:16px;border-radius:50%;background:rgba(23,224,168,.16)}
.check-list li::after{content:"";position:absolute;left:5px;top:11px;width:5px;height:9px;border:solid #0E9C76;border-width:0 2px 2px 0;transform:rotate(42deg)}
/* ========== 空态 ========== */
.empty-state{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:64px 28px;text-align:center;box-shadow:var(--sh-card)}
.empty-icon{width:64px;height:64px;margin:0 auto 18px;border-radius:18px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand)}
.empty-title{font-size:clamp(22px,2.6vw,30px);font-weight:700;color:var(--ink);margin-bottom:12px}
.empty-state p{color:var(--muted);max-width:520px;margin:0 auto 24px}
/* ========== 文章内容卡片区 ========== */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;height:100%;color:inherit}
.post-card:hover{transform:translateY(-6px);box-shadow:var(--sh-hover);border-color:rgba(91,61,245,.3);color:inherit}
.post-card-media{aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft)}
.post-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.post-card:hover .post-card-media img{transform:scale(1.04)}
.post-card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-card-title{font-size:17px;font-weight:600;line-height:1.5;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card-text{font-size:14px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:12px;border-top:1px solid var(--line-soft);font-size:12px;color:var(--faint)}
/* ========== 上下篇 ========== */
.post-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.post-nav-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-card);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;color:inherit}
.post-nav-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(91,61,245,.3);color:inherit}
.post-nav-card.is-next{text-align:right}
.post-nav-label{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;color:var(--brand);margin-bottom:10px}
.post-nav-title{display:block;font-size:16px;font-weight:600;color:var(--ink);line-height:1.6}
.post-nav-hint{display:block;font-size:13px;color:var(--faint);margin-top:8px}
/* ========== 评论区 ========== */
.comment-box{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-card)}
.comment-box h3{font-size:19px;font-weight:700;color:var(--ink);margin-bottom:6px}
.comment-box .comment-sub{font-size:14px;color:var(--muted);margin-bottom:20px}
.comment-item{display:flex;gap:14px;padding:18px 0;border-bottom:1px dashed var(--line)}
.comment-item:last-of-type{border-bottom:0}
.avatar{flex:0 0 40px;width:40px;height:40px;border-radius:50%;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-weight:700;font-size:14px}
.comment-name{font-size:14px;font-weight:600;color:var(--ink)}
.comment-time{font-size:12px;color:var(--faint);margin-left:10px;font-family:var(--font-num)}
.comment-text{font-size:14px;color:var(--muted);line-height:1.75;margin-top:6px}
/* ========== 表单 ========== */
.field{width:100%;height:48px;padding:0 14px;border:1.5px solid #E0E3EF;border-radius:10px;background:#fff;outline:none;transition:border-color .2s ease,box-shadow .2s ease}
.field::placeholder{color:var(--faint)}
.field:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(91,61,245,.12)}
textarea.field{height:auto;min-height:120px;padding:12px 14px;line-height:1.7;resize:vertical}
.form-row{margin-bottom:16px}
.form-note{font-size:12px;color:var(--faint);margin-top:12px;line-height:1.7}
/* ========== 底部 CTA 条 ========== */
.cta-band{position:relative;overflow:hidden;background:linear-gradient(120deg,var(--brand) 0%,var(--brand-dark) 52%,#2B1B8F 100%);border-radius:18px;padding:44px;color:#fff;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between}
.cta-band::after{content:"";position:absolute;right:-60px;top:-70px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(217,242,74,.28),rgba(217,242,74,0) 68%);pointer-events:none}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;color:#fff;max-width:560px}
.cta-band p{margin-top:10px;color:rgba(255,255,255,.8);font-size:15px;max-width:560px}
.cta-band-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:1}
/* ========== 页脚 ========== */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);margin-top:72px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding:64px 0 44px}
.footer-brand .logo-text{color:#fff;display:inline-block;margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62)}
.footer-col h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col li + li{margin-top:10px}
.footer-col a{font-size:15px;color:rgba(255,255,255,.72);display:inline-block}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;padding:20px 0 32px;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:rgba(255,255,255,.55)}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:#fff}
/* ========== 移动抽屉 ========== */
.drawer-mask{position:fixed;inset:0;background:rgba(18,20,43,.45);opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:80}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;background:#fff;z-index:90;transform:translateX(100%);transition:transform .28s ease;display:flex;flex-direction:column;padding:20px;overflow-y:auto}
.drawer.is-open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);display:grid;place-items:center;color:var(--ink)}
.drawer-search{display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;border-radius:12px;background:var(--field);margin-bottom:14px;color:var(--muted)}
.drawer-search input{border:0;background:transparent;outline:none;width:100%;font-size:14px}
.drawer-list li{border-bottom:1px solid var(--line-soft)}
.drawer-list a{display:block;line-height:48px;font-size:15px;color:var(--text);padding:0 4px}
.drawer-list a.is-active{color:var(--brand);font-weight:600}
.drawer .btn{margin-top:18px}
body.is-locked{overflow:hidden}
/* ========== 响应式 ========== */
@media (max-width:1023px){
  :root{--sec:48px;--gap:24px}
  .nav-main,.nav-search{display:none}
  .nav-toggle{display:inline-flex}
  .article-side{position:static;margin-top:32px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:48px 0 32px}
  .cta-band{padding:34px}
}
@media (max-width:767px){
  .grid-container{padding-left:16px;padding-right:16px}
  .article-main{padding-top:28px}
  .post-nav{grid-template-columns:1fr}
  .post-nav-card.is-next{text-align:left}
  .cta-band{padding:28px;border-radius:16px}
  .cta-band-actions{width:100%}
  .cta-band-actions .btn{flex:1 1 100%}
}
@media (max-width:639px){
  .card-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .article-body{font-size:16px}
  .logo-text{font-size:16px}
  .nav-actions .btn{height:38px;padding:0 14px;font-size:13px}
}
@media (max-width:520px){
  .article-title{font-size:26px}
  .section-head{flex-direction:column;align-items:flex-start}
  .modal-like{padding:0}
}

/* roulang page: category2 */
:root{
  --brand:#5B3DF5;
  --brand-dark:#4626D6;
  --brand-soft:#EFEBFF;
  --promo:#FF5A3C;
  --lime:#D9F24A;
  --mint:#17E0A8;
  --bg:#F7F8FC;
  --card:#FFFFFF;
  --ink:#12142B;
  --text:#1B1E34;
  --muted:#6C7186;
  --line:#E6E8F2;
  --line-soft:#E9EBF5;
  --r-card:16px;
  --r-img:14px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-card:0 1px 2px rgba(18,20,43,.04), 0 14px 30px -20px rgba(18,20,43,.28);
  --shadow-hover:0 6px 18px -8px rgba(18,20,43,.2), 0 28px 50px -26px rgba(18,20,43,.34);
  --shadow-nav:0 4px 16px -8px rgba(18,20,43,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-dark);}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.25;font-weight:700;}
p{margin:0;}
:focus-visible{outline:3px solid rgba(91,61,245,.32);outline-offset:2px;border-radius:4px;}

.grid-container{max-width:1240px;margin:0 auto;padding:0 20px;width:100%;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);
  color:#fff;box-shadow:0 10px 22px -12px rgba(91,61,245,.78);
}
.btn-primary:hover{color:#fff;transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 18px 32px -14px rgba(91,61,245,.86);}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);}
.btn-secondary{background:#fff;border-color:#D8DBEA;color:var(--ink);}
.btn-secondary:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
.btn-ghost{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.42);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff;color:#fff;transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand);letter-spacing:.2px;
}
.badge-mint{background:rgba(23,224,168,.16);color:#0B8F6C;}
.badge-lime{background:var(--lime);color:var(--ink);}
.badge-promo{background:var(--promo);color:#fff;}
.badge-dark{background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.16);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;border-bottom:1px solid var(--line-soft);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-nav);}
.nav-inner{display:flex;align-items:center;gap:22px;min-height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:36px;height:36px;border-radius:10px;flex:0 0 36px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff;
  box-shadow:0 8px 16px -10px rgba(91,61,245,.9);
}
.logo-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.2px;white-space:nowrap;}
.nav-main{flex:1 1 auto;margin-left:6px;}
.nav-list{display:flex;align-items:center;gap:4px;}
.nav-list a{
  position:relative;display:inline-block;padding:10px 14px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--text);
}
.nav-list a:hover{color:var(--brand);background:#F5F3FF;}
.nav-list a.is-active{color:var(--brand);font-weight:600;}
.nav-list a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;height:40px;width:240px;padding:0 14px;
  background:#F2F3F9;border:1.5px solid transparent;border-radius:var(--r-pill);
  color:var(--muted);transition:background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search svg{flex:0 0 16px;}
.nav-search input{
  flex:1 1 auto;width:100%;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--text);font-family:inherit;
}
.nav-search input::placeholder{color:#9AA0B4;}
.nav-search:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 4px rgba(91,61,245,.12);}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;border:1.5px solid var(--line);
  color:var(--ink);background:#fff;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* ============ 深色分类横幅 ============ */
.cat-hero{position:relative;background-color:var(--ink);color:#fff;overflow:hidden;isolation:isolate;}
.cat-hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.95),rgba(0,0,0,.35));
  mask-image:linear-gradient(180deg,rgba(0,0,0,.95),rgba(0,0,0,.35));
}
.cat-hero::after{
  content:"";position:absolute;width:560px;height:560px;right:-160px;top:-240px;z-index:0;
  background:radial-gradient(circle,rgba(91,61,245,.55),rgba(91,61,245,0) 66%);
  filter:blur(6px);pointer-events:none;
}
.cat-hero .hero-bg{
  position:absolute;inset:0;z-index:-1;
  background-image:linear-gradient(115deg,rgba(18,20,43,.97) 0%,rgba(18,20,43,.9) 55%,rgba(18,20,43,.78) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.hero-inner{position:relative;z-index:1;padding-top:30px;padding-bottom:56px;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:22px;flex-wrap:wrap;}
.breadcrumb a{color:rgba(255,255,255,.62);}
.breadcrumb a:hover{color:#fff;}
.hero-grid{display:grid;grid-template-columns:1.32fr .88fr;gap:44px;align-items:center;}
.hero-copy h1{
  color:#fff;font-size:clamp(28px,3.7vw,46px);font-weight:800;
  line-height:1.16;letter-spacing:-.5px;margin:16px 0 14px;
}
.hero-sub{color:rgba(255,255,255,.74);font-size:16px;line-height:1.8;max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.hero-points span{
  font-size:13px;color:rgba(255,255,255,.75);
  padding:5px 12px;border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.04);
}

/* 倒计时小卡 */
.countdown-card{
  background:rgba(255,255,255,.055);
  border:1px solid rgba(255,255,255,.12);
  border-radius:18px;padding:22px;
  backdrop-filter:blur(2px);
}
.countdown-label{font-size:13px;color:rgba(255,255,255,.66);letter-spacing:.3px;}
.countdown-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:16px 0 14px;}
.cd-cell{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1);
  border-radius:12px;padding:10px 4px;text-align:center;
}
.cd-num{
  display:block;font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;
  font-size:26px;font-weight:700;color:#fff;line-height:1.2;letter-spacing:.5px;
}
.cd-tag{display:block;font-size:12px;color:rgba(255,255,255,.58);margin-top:2px;}
.countdown-note{font-size:13px;color:rgba(255,255,255,.6);line-height:1.7;}
.countdown-status{
  display:inline-flex;align-items:center;gap:8px;margin-top:14px;
  font-size:13px;color:rgba(255,255,255,.8);
}
.dot{width:8px;height:8px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 4px rgba(23,224,168,.16);}

/* ============ 通用板块 ============ */
.section{padding:72px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(24px,3vw,34px);letter-spacing:-.4px;}
.section-head p{color:var(--muted);font-size:15px;margin-top:10px;max-width:640px;}
.section-title-line{height:4px;width:44px;background:var(--brand);border-radius:4px;margin-bottom:16px;}

/* ============ 问题分类宫格 ============ */
.qa-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.qa-card{
  display:flex;flex-direction:column;gap:12px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--shadow-card);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.qa-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:rgba(91,61,245,.32);}
.qa-icon{
  width:46px;height:46px;border-radius:13px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);
}
.qa-card:nth-child(2) .qa-icon{background:rgba(255,90,60,.12);color:var(--promo);}
.qa-card:nth-child(3) .qa-icon{background:rgba(23,224,168,.14);color:#0B8F6C;}
.qa-card:nth-child(4) .qa-icon{background:rgba(217,242,74,.35);color:#5C6B00;}
.qa-card:nth-child(5) .qa-icon{background:#EFF2FF;color:#3A47A8;}
.qa-card:nth-child(6) .qa-icon{background:#FDF0F6;color:#B03371;}
.qa-card h3{font-size:19px;letter-spacing:-.2px;}
.qa-card p{color:var(--muted);font-size:15px;line-height:1.75;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;margin-top:auto;padding-top:6px;
  font-size:14px;font-weight:600;color:var(--brand);
}
.link-arrow:hover{gap:10px;color:var(--brand-dark);}

/* ============ 对照表 ============ */
.table-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);overflow:hidden;
}
.check-table{width:100%;border-collapse:collapse;font-size:15px;}
.check-table thead th{
  background:#F5F6FB;color:var(--ink);font-weight:600;font-size:14px;
  text-align:left;padding:16px 22px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.check-table tbody td{
  padding:18px 22px;border-bottom:1px solid var(--line);color:var(--text);vertical-align:top;
}
.check-table tbody tr:nth-child(even){background:#FAFAFE;}
.check-table tbody tr:last-child td{border-bottom:0;}
.check-table td:first-child{font-weight:600;color:var(--ink);}
.check-table td:last-child{color:var(--brand);font-weight:500;}

/* ============ 深色说明带 ============ */
.info-band{
  background:var(--ink);border-radius:22px;padding:44px;
  display:grid;grid-template-columns:repeat(3,1fr);gap:32px;
  position:relative;overflow:hidden;
}
.info-band::after{
  content:"";position:absolute;width:420px;height:420px;left:-160px;bottom:-260px;
  background:radial-gradient(circle,rgba(91,61,245,.5),transparent 68%);pointer-events:none;
}
.info-item{position:relative;z-index:1;color:rgba(255,255,255,.7);}
.info-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;background:rgba(217,242,74,.9);color:var(--ink);
  font-family:"SFMono-Regular",Consolas,monospace;font-weight:700;font-size:15px;margin-bottom:16px;
}
.info-item h3{color:#fff;font-size:19px;margin-bottom:10px;}
.info-item p{font-size:15px;line-height:1.8;}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.faq-item.is-open{border-color:rgba(91,61,245,.34);box-shadow:var(--shadow-card);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:60px;padding:16px 22px;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);
}
.faq-q:hover{color:var(--brand);}
.faq-sign{
  position:relative;flex:0 0 22px;width:22px;height:22px;border-radius:50%;
  background:var(--brand-soft);transition:transform .3s var(--ease),background .3s var(--ease);
}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);
  transform:translate(-50%,-50%);border-radius:2px;
}
.faq-sign::before{width:11px;height:2px;}
.faq-sign::after{width:2px;height:11px;transition:opacity .3s var(--ease);}
.faq-item.is-open .faq-sign{transform:rotate(180deg);background:var(--brand);}
.faq-item.is-open .faq-sign::before{background:#fff;}
.faq-item.is-open .faq-sign::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s var(--ease);}
.faq-a-inner{
  padding:4px 22px 22px 25px;border-left:3px solid var(--brand);
  background:#FAFBFF;color:var(--muted);font-size:15px;line-height:1.85;
}

/* ============ 咨询表单 ============ */
.consult{
  background:#fff;border:1px solid var(--line);border-radius:22px;
  box-shadow:var(--shadow-card);overflow:hidden;
  display:grid;grid-template-columns:.92fr 1.08fr;
}
.consult-aside{
  padding:40px 38px;background:linear-gradient(160deg,#F6F4FF 0%,#FFFFFF 70%);
  border-right:1px solid var(--line);display:flex;flex-direction:column;gap:18px;
}
.consult-aside h2{font-size:clamp(22px,2.4vw,28px);letter-spacing:-.3px;}
.consult-aside p{color:var(--muted);font-size:15px;}
.consult-list{display:flex;flex-direction:column;gap:12px;margin-top:4px;}
.consult-list li{display:flex;gap:10px;font-size:14px;color:var(--text);line-height:1.7;}
.consult-list li::before{
  content:"";flex:0 0 8px;width:8px;height:8px;border-radius:50%;
  background:var(--brand);margin-top:9px;
}
.consult-figure{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);margin-top:6px;}
.consult-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.consult-form{padding:40px 38px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{margin-bottom:18px;display:flex;flex-direction:column;gap:8px;}
.field label{font-size:14px;font-weight:600;color:var(--ink);}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;font-family:inherit;font-size:15px;color:var(--text);
  background:#fff;border:1.5px solid #E0E3EF;border-radius:var(--r-btn);outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:auto;min-height:132px;padding:12px 14px;resize:vertical;line-height:1.75;}
.field input::placeholder,.field textarea::placeholder{color:#9AA0B4;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);box-shadow:0 0 0 4px rgba(91,61,245,.12);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#6C7186 50%),linear-gradient(135deg,#6C7186 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.form-note{font-size:12px;color:var(--muted);margin-top:12px;line-height:1.7;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:56px 0 0;margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px;
  padding-bottom:42px;border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand .logo-text{color:#fff;font-size:18px;display:inline-block;}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:330px;}
.footer-col h3{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-col li{margin-bottom:11px;}
.footer-col a{color:rgba(255,255,255,.72);font-size:15px;display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease);}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;
  padding:20px 0 26px;font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.7);}
.footer-bottom a:hover{color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .grid-container{padding:0 18px;}
  .nav-toggle{display:inline-flex;}
  .nav-main{
    position:absolute;left:0;right:0;top:100%;margin-left:0;flex:none;
    display:none;background:#fff;border-top:1px solid var(--line-soft);
    box-shadow:0 22px 36px -24px rgba(18,20,43,.34);
    padding:6px 18px 18px;
  }
  .site-header.nav-open .nav-main{display:block;}
  .nav-list{display:block;}
  .nav-list li{display:block;}
  .nav-list a{display:block;padding:14px 2px;border-bottom:1px solid var(--line-soft);border-radius:0;}
  .nav-list a.is-active::after{display:none;}
  .nav-search{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:30px;}
  .hero-inner{padding-top:24px;padding-bottom:44px;}
  .qa-grid{grid-template-columns:repeat(2,1fr);}
  .info-band{grid-template-columns:1fr;gap:26px;padding:34px;}
  .consult{grid-template-columns:1fr;}
  .consult-aside{border-right:0;border-bottom:1px solid var(--line);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .section{padding:56px 0;}
}
@media (max-width:639px){
  body{font-size:15.5px;}
  .grid-container{padding:0 16px;}
  .nav-inner{min-height:64px;gap:12px;}
  .logo-mark{width:32px;height:32px;flex:0 0 32px;}
  .logo-text{font-size:16px;}
  .hero-copy h1{font-size:26px;}
  .cd-num{font-size:22px;}
  .qa-grid{grid-template-columns:1fr;}
  .qa-card{padding:22px 20px;}
  .check-table{font-size:14px;}
  .check-table thead th,.check-table tbody td{padding:13px 14px;}
  .section-head{margin-bottom:24px;}
  .form-row{grid-template-columns:1fr;gap:0;}
  .consult-aside,.consult-form{padding:28px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .info-band{padding:26px 20px;border-radius:18px;}
  .hero-actions .btn{width:100%;}
}

/* roulang page: category1 */
:root{
  --brand:#5B3DF5;
  --brand-dark:#4626D6;
  --brand-soft:#EFEBFF;
  --promo:#FF5A3C;
  --lime:#D9F24A;
  --mint:#17E0A8;
  --bg:#F7F8FC;
  --card:#FFFFFF;
  --ink:#12142B;
  --text:#1B1E34;
  --muted:#6C7186;
  --line:#E6E8F2;
  --line-soft:#E9EBF5;
  --radius-card:16px;
  --radius-img:14px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(18,20,43,.04), 0 14px 30px -20px rgba(18,20,43,.28);
  --shadow-hover:0 6px 14px rgba(18,20,43,.06), 0 26px 42px -24px rgba(18,20,43,.34);
  --sec-pad:72px;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"SF Mono",ui-monospace,"JetBrains Mono",Consolas,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-dark)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;padding:0;font-family:var(--font-sans);color:var(--ink);font-weight:700;line-height:1.3;letter-spacing:0}
p{margin:0}
button{font:inherit;color:inherit}
figure{margin:0}
time{font-family:var(--font-num)}
::selection{background:rgba(91,61,245,.16)}

.grid-container{max-width:1200px;padding-left:20px;padding-right:20px;margin-left:auto;margin-right:auto}
@media screen and (min-width:1440px){.grid-container{max-width:1240px}}
@media screen and (max-width:639px){.grid-container{padding-left:16px;padding-right:16px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease,filter .18s ease;
}
.btn-primary{background:linear-gradient(135deg,#5B3DF5 0%,#4626D6 100%);color:#fff;box-shadow:0 10px 22px -12px rgba(91,61,245,.85)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 16px 28px -14px rgba(91,61,245,.9)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-outline{background:#fff;border-color:#D8DBEA;color:var(--ink)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:0 12px 24px -18px rgba(91,61,245,.7)}
.btn-outline:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
.btn-ghost:hover{background:#fff;border-color:#fff;color:var(--ink)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(91,61,245,.3);outline-offset:2px}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line-soft);transition:box-shadow .25s ease}
.site-header.is-scrolled{box-shadow:0 4px 16px -8px rgba(18,20,43,.18)}
.nav-inner{display:flex;align-items:center;gap:24px;min-height:72px}
.logo{display:flex;align-items:center;gap:10px;flex:none;color:var(--ink)}
.logo:hover{color:var(--ink)}
.logo-mark{width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;background:linear-gradient(135deg,#5B3DF5,#4626D6);box-shadow:0 8px 16px -10px rgba(91,61,245,.9)}
.logo-text{font-size:18px;font-weight:700;letter-spacing:-.2px;white-space:nowrap}
.nav-main{margin-left:6px}
.nav-list{display:flex;align-items:center;gap:26px}
.nav-list a{position:relative;display:inline-block;padding:24px 0;font-size:15px;font-weight:500;color:#3A3F55}
.nav-list a:hover{color:var(--brand)}
.nav-list a.is-active{color:var(--ink);font-weight:600}
.nav-list a.is-active::after{content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;border-radius:2px;background:var(--brand)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-search{display:flex;align-items:center;gap:8px;width:240px;height:40px;padding:0 14px;border-radius:999px;background:#F2F3F9;border:1.5px solid transparent;color:var(--muted);transition:background .2s,border-color .2s,box-shadow .2s}
.nav-search:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 4px rgba(91,61,245,.12)}
.nav-search svg{flex:none}
.nav-search input[type="search"]{
  flex:1;min-width:0;margin:0;padding:0;height:auto;border:0;background:transparent;
  font-size:14px;color:var(--ink);box-shadow:none;
}
.nav-search input[type="search"]:focus{box-shadow:none;outline:none}
.nav-search input[type="search"]::placeholder{color:#9AA0B4}
.nav-toggle{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink);align-items:center;justify-content:center;cursor:pointer}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}

.drawer-mask{position:fixed;inset:0;background:rgba(18,20,43,.45);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:80}
.drawer-mask.is-open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;background:#fff;z-index:90;
  transform:translateX(100%);transition:transform .28s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;padding:20px;overflow-y:auto;
  box-shadow:-14px 0 40px -22px rgba(18,20,43,.5);
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--ink)}
.drawer-close:hover{border-color:var(--brand);color:var(--brand)}
.drawer-nav li{border-bottom:1px solid var(--line)}
.drawer-nav a{display:flex;align-items:center;height:48px;font-size:15px;font-weight:500;color:var(--ink)}
.drawer-nav a.is-active{color:var(--brand);font-weight:600}
.drawer-nav a:hover{color:var(--brand)}
.drawer-search{display:flex;align-items:center;gap:8px;height:44px;margin:20px 0 16px;padding:0 14px;border-radius:10px;background:#F2F3F9;border:1.5px solid transparent}
.drawer-search:focus-within{background:#fff;border-color:var(--brand)}
.drawer-search input[type="search"]{flex:1;min-width:0;border:0;background:transparent;margin:0;padding:0;font-size:14px;box-shadow:none}
.drawer-search input[type="search"]:focus{outline:none;box-shadow:none}
.drawer-cta{width:100%}

/* ---------- 首屏横幅 ---------- */
.page-hero{position:relative;overflow:hidden;background:#F7F8FC;border-bottom:1px solid var(--line);padding:56px 0 48px}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(91,61,245,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(91,61,245,.07) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:radial-gradient(120% 85% at 12% 0%,#000 0%,rgba(0,0,0,.35) 55%,transparent 78%);
  mask-image:radial-gradient(120% 85% at 12% 0%,#000 0%,rgba(0,0,0,.35) 55%,transparent 78%);
}
.page-hero::after{content:"";position:absolute;right:-160px;top:-220px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(91,61,245,.18),transparent 65%);pointer-events:none}
.page-hero .grid-container{position:relative;z-index:2}
.breadcrumb{margin-bottom:18px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:#C3C7D8}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb li[aria-current]{color:var(--ink);font-weight:600}
.page-hero h1{font-size:clamp(28px,3.8vw,44px);font-weight:800;line-height:1.18;letter-spacing:-.5px;margin-bottom:16px;max-width:14em}
.hero-lead{font-size:17px;line-height:1.85;color:var(--muted);max-width:36em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-media{position:relative;border-radius:18px;overflow:hidden;background:#fff;border:1px solid #fff;box-shadow:0 28px 50px -30px rgba(18,20,43,.45)}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover}

.status-bar{
  margin-top:36px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 22px;box-shadow:var(--shadow-card);
}
.status-live{display:inline-flex;align-items:center;gap:10px;font-size:14px;color:var(--ink);font-weight:600}
.status-link{font-size:14px;font-weight:600}
.status-link:hover{text-decoration:underline}
.dot{width:8px;height:8px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 4px rgba(23,224,168,.18);flex:none}

.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:28px}
.stat{display:flex;flex-direction:column;gap:2px}
.stat-num{font-family:var(--font-num);font-size:28px;font-weight:800;color:var(--ink);line-height:1.1}
.stat-label{font-size:13px;color:var(--muted)}

/* ---------- 通用板块 ---------- */
.section{position:relative;padding:var(--sec-pad) 0;background:#fff}
.section--soft{background:#F7F8FC}
.section-head{max-width:760px;margin:0 auto 40px;text-align:center}
.section-head--left{margin-left:0;text-align:left}
.section-head h2{font-size:clamp(24px,3vw,36px);font-weight:700;letter-spacing:-.3px;line-height:1.25}
.section-head p{margin-top:14px;font-size:16px;color:var(--muted)}
.eyebrow{display:inline-block;margin-bottom:14px;padding:5px 12px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:700;letter-spacing:1px}

/* ---------- 登录前准备 ---------- */
.prep-grid{margin-top:8px}
.prep-item{padding-top:24px;border-top:2px solid var(--line);height:100%}
.prep-item h3{margin:10px 0 12px;font-size:20px;font-weight:600}
.prep-item p{font-size:15px;color:var(--muted);line-height:1.9}
.prep-index{font-family:var(--font-num);font-size:13px;font-weight:700;letter-spacing:1.5px;color:var(--brand)}

/* ---------- 步骤时间线 ---------- */
.timeline{position:relative;padding-left:56px}
.timeline::before{content:"";position:absolute;left:19px;top:14px;bottom:14px;width:2px;background:linear-gradient(180deg,rgba(91,61,245,.9),rgba(91,61,245,.3) 60%,rgba(91,61,245,.06))}
.timeline-item{position:relative;padding-bottom:56px}
.timeline-item:last-child{padding-bottom:0}
.step-num{
  position:absolute;left:-56px;top:0;z-index:2;
  width:40px;height:40px;border-radius:12px;background:#fff;border:2px solid var(--brand);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:14px;font-weight:800;
}
.step-row{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.step-row--reverse .step-copy{order:2}
.step-row--reverse .step-media{order:1}
.step-copy h3{font-size:22px;font-weight:600;margin-bottom:12px}
.step-copy p{font-size:16px;color:var(--muted);line-height:1.9}
.step-points{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.step-points li{position:relative;padding-left:22px;font-size:14px;color:var(--text)}
.step-points li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 3px rgba(217,242,74,.28)}
.step-media{border-radius:var(--radius-img);overflow:hidden;background:#F2F3F9;border:1px solid var(--line);box-shadow:var(--shadow-card)}
.step-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s ease}
.step-media:hover img{transform:scale(1.03)}

/* ---------- 中段 CTA 条 ---------- */
.cta-band{position:relative;overflow:hidden;background:linear-gradient(120deg,#5B3DF5 0%,#4626D6 100%);color:#fff;padding:44px 0}
.cta-band::after{
  content:"";position:absolute;right:-70px;top:-90px;width:300px;height:300px;
  background:repeating-linear-gradient(135deg,rgba(255,255,255,.1) 0 12px,transparent 12px 28px);
  transform:rotate(12deg);pointer-events:none;
}
.cta-band__inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:24px}
.cta-band h2{color:#fff;font-size:clamp(20px,2.4vw,28px);font-weight:700;letter-spacing:-.2px}
.cta-band p{margin-top:8px;font-size:15px;color:rgba(255,255,255,.82);max-width:44em}

/* ---------- 环境说明 ---------- */
.device-list{margin-top:8px}
.device-row{display:grid;grid-template-columns:230px 1fr;gap:28px;padding:24px 0;border-bottom:1px solid var(--line)}
.device-row:first-child{border-top:1px solid var(--line)}
.device-name{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:var(--ink)}
.device-desc{font-size:15px;color:var(--muted);line-height:1.9}

/* ---------- 核对清单 ---------- */
.check-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:32px;box-shadow:var(--shadow-card)}
.check-list{display:grid;grid-template-columns:1fr 1fr;gap:16px 32px;margin-top:22px}
.check-list li{position:relative;padding-left:32px;font-size:15px;color:var(--text)}
.check-list li::before{content:"";position:absolute;left:0;top:7px;width:18px;height:18px;border-radius:6px;background:rgba(23,224,168,.14);border:1px solid rgba(23,224,168,.55)}
.check-list li::after{content:"";position:absolute;left:6px;top:11px;width:6px;height:10px;border-right:2px solid #12B487;border-bottom:2px solid #12B487;transform:rotate(45deg)}
.note-line{margin-top:24px;padding:16px 20px;border-left:3px solid var(--brand);background:#FAFBFF;border-radius:0 12px 12px 0;font-size:14px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq{margin-top:8px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  position:relative;width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:60px;padding:18px 24px;background:#fff;border:0;text-align:left;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;
  transition:background .2s ease,color .2s ease;
}
.faq-q:hover{background:#FAFBFF;color:var(--brand)}
.faq-icon{position:relative;flex:none;width:26px;height:26px;border-radius:8px;background:var(--brand-soft);color:var(--brand);transition:transform .25s ease,background .25s ease,color .25s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;transform:translate(-50%,-50%)}
.faq-icon::before{width:12px;height:2px}
.faq-icon::after{width:2px;height:12px;transition:opacity .2s ease}
.faq-item.is-open .faq-icon{background:var(--brand);color:#fff;transform:rotate(45deg)}
.faq-a{display:none;padding:0 24px 22px;background:#FAFBFF}
.faq-item.is-open .faq-a{display:block}
.faq-a p{border-left:3px solid var(--brand);padding-left:16px;font-size:15px;color:var(--muted);line-height:1.9}

/* ---------- 页脚 ---------- */
.site-footer{background:#12142B;color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .logo-text{display:block;color:#fff;font-size:18px;font-weight:700;margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);max-width:340px}
.footer-col h3{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;letter-spacing:.2px}
.footer-col li{margin-bottom:12px}
.footer-col a{display:inline-block;color:rgba(255,255,255,.72);font-size:15px;transition:color .2s ease,transform .2s ease}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding:20px 0;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:rgba(255,255,255,.55)}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:#fff}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  :root{--sec-pad:56px}
  .nav-main,.nav-search,.nav-actions .btn-sm{display:none}
  .nav-toggle{display:flex}
  .nav-inner{min-height:64px;gap:12px}
  .page-hero{padding:44px 0 40px}
  .page-hero h1{max-width:none}
  .hero-media{margin-top:32px}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:16px}
  .step-row{grid-template-columns:1fr;gap:24px}
  .step-row--reverse .step-copy{order:1}
  .step-row--reverse .step-media{order:2}
  .device-row{grid-template-columns:1fr;gap:10px}
  .check-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band__inner{flex-direction:column;align-items:flex-start}
}
@media screen and (max-width:639px){
  :root{--sec-pad:44px}
  body{font-size:16px}
  .logo-text{font-size:16px}
  .section-head{margin-bottom:28px;text-align:left}
  .hero-actions .btn{flex:1 1 100%}
  .status-bar{flex-direction:column;align-items:flex-start;padding:16px}
  .timeline{padding-left:44px}
  .timeline::before{left:15px}
  .step-num{left:-44px;width:32px;height:32px;border-radius:10px;font-size:12px}
  .timeline-item{padding-bottom:44px}
  .step-copy h3{font-size:19px}
  .check-panel{padding:22px}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a{padding:0 18px 18px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}