/* roulang page: index */
:root{
  --brand:#5B4BE8;
  --brand-deep:#3F32C4;
  --brand-light:#EEF0FF;
  --teal:#12C4B4;
  --teal-light:#E4FAF6;
  --accent:#FF7A45;
  --bg:#F6F7FC;
  --bg-alt:#F1F2FA;
  --ink:#16172B;
  --text:#4A4C63;
  --muted:#7C8098;
  --line:#E7E8F0;
  --card-line:#EDEEF6;
  --dark-a:#141530;
  --dark-b:#1E1B45;
  --grad:linear-gradient(135deg,#5B4BE8 0%,#12C4B4 100%);
  --r-sm:10px;
  --r-md:12px;
  --r-card:20px;
  --r-pill:999px;
  --sh:0 8px 24px rgba(22,23,43,.06);
  --sh-h:0 16px 40px rgba(91,75,232,.14);
  --t:.28s ease;
  --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --num:"DIN Alternate","Barlow","SF Mono","Menlo",monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-deep);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--brand)}
h1,h2,h3,h4{color:var(--ink);margin:0;letter-spacing:-.2px}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button,input,textarea,select{font-family:inherit;font-size:inherit}
button{color:inherit}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
.container{max-width:1200px;padding-left:24px;padding-right:24px}

/* ===== 按钮 ===== */
.btn-grad,.btn-ghost,.btn-line,.btn-white{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);font-weight:600;font-size:15px;
  padding:13px 28px;border:1px solid transparent;cursor:pointer;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t);
  line-height:1.2;text-align:center;
}
.btn-grad{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(91,75,232,.22)}
.btn-grad:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 34px rgba(91,75,232,.3)}
.btn-ghost{background:#fff;color:var(--brand-deep);border-color:#DCD9FB}
.btn-ghost:hover{color:var(--brand-deep);border-color:var(--brand);transform:translateY(-2px);box-shadow:0 10px 24px rgba(91,75,232,.12)}
.btn-line{background:transparent;color:var(--brand-deep);border-color:#DCD9FB;padding:11px 22px}
.btn-line:hover{background:var(--brand-light);color:var(--brand-deep)}
.btn-white{background:#fff;color:var(--brand-deep);box-shadow:0 10px 26px rgba(20,21,48,.16)}
.btn-white:hover{color:var(--brand-deep);transform:translateY(-2px)}
.btn-block{width:100%}

/* ===== 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,247,252,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{
  width:32px;height:32px;border-radius:11px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:800;font-size:17px;font-family:var(--num);
  box-shadow:0 6px 16px rgba(91,75,232,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:.2px}
.brand-text span{font-size:11px;color:var(--muted);letter-spacing:1.4px}
.menu{display:flex;align-items:center;gap:32px}
.menu a{
  position:relative;font-size:15px;font-weight:500;color:var(--text);
  padding:6px 0;transition:color var(--t);
}
.menu a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--grad);border-radius:2px;transition:width var(--t);
}
.menu a:hover{color:var(--brand)}
.menu a:hover::after{width:100%}
.menu a.active{color:var(--ink);font-weight:600}
.menu a.active::after{width:100%}
.menu a.active::before{
  content:"";position:absolute;left:50%;top:-8px;transform:translateX(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--accent);
}
.nav-tools{display:flex;align-items:center;gap:16px}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1.5px solid #DCDDEB;background:#fff;
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  transition:border-color var(--t),transform var(--t);
}
.icon-btn:hover{border-color:var(--brand);transform:translateY(-1px)}
.icon-btn svg{width:20px;height:20px;stroke:var(--brand-deep);fill:none;stroke-width:1.5}
.nav-cta{padding:11px 22px;font-size:14.5px}
.hamburger{display:none;width:42px;height:42px;border:1.5px solid #DCDDEB;border-radius:12px;background:#fff;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.hamburger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform var(--t),opacity var(--t)}
.hamburger.on span:first-child{transform:translateY(3.5px) rotate(45deg)}
.hamburger.on span:last-child{transform:translateY(-3.5px) rotate(-45deg)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,21,48,.45);opacity:0;visibility:hidden;
  transition:opacity var(--t),visibility var(--t);z-index:70;
}
.drawer-mask.on{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;background:#fff;z-index:80;
  transform:translateX(102%);transition:transform .3s ease;
  display:flex;flex-direction:column;padding:20px 0 0;
  box-shadow:-18px 0 40px rgba(20,21,48,.12);
}
.drawer.on{transform:translateX(0)}
.drawer-head{padding:0 22px 16px;border-bottom:1px solid #EEF0F6;font-weight:700;color:var(--ink)}
.drawer a.d-link{
  display:block;padding:0 22px;line-height:56px;font-size:15.5px;color:var(--text);
  border-bottom:1px solid #EEF0F6;
}
.drawer a.d-link.active{color:var(--brand-deep);font-weight:600;background:#FAFAFF}
.drawer-foot{margin-top:auto;padding:20px 22px;border-top:1px solid #EEF0F6}

/* ===== Hero ===== */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(150deg,#EEF0FF 0%,#E6FAF7 100%);
  padding:78px 0 84px;
}
.hero::before{
  content:"";position:absolute;top:-140px;right:-120px;width:420px;height:420px;border-radius:50%;
  background:var(--grad);filter:blur(80px);opacity:.18;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(91,75,232,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(91,75,232,.05) 1px,transparent 1px);
  background-size:24px 24px;opacity:.9;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
}
.hero .container{position:relative;z-index:2}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid #DFDCFB;border-radius:var(--r-pill);
  padding:7px 16px;font-size:13px;color:var(--brand-deep);font-weight:500;
  box-shadow:0 6px 18px rgba(91,75,232,.08);
}
.hero-tag i{width:8px;height:8px;border-radius:50%;background:var(--accent);display:block}
.hero h1{font-size:44px;line-height:1.22;font-weight:700;letter-spacing:-.5px;margin:22px 0 18px}
.hero-sub{font-size:18px;color:var(--text);max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-stats{display:flex;flex-wrap:wrap;gap:36px}
.hero-stats .st{display:flex;flex-direction:column}
.hero-stats .st b{font-family:var(--num);font-size:20px;font-weight:700;color:var(--ink);letter-spacing:-.3px}
.hero-stats .st span{font-size:13px;color:var(--muted)}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:24px;
  box-shadow:0 24px 60px rgba(20,21,48,.16);
}
.hero-media .tint{
  position:absolute;inset:0;border-radius:24px;background:rgba(91,75,232,.08);pointer-events:none;
}
.float-badge{
  position:absolute;background:#fff;border-radius:16px;padding:14px 18px;
  box-shadow:0 12px 32px rgba(20,21,48,.12);display:flex;flex-direction:column;gap:2px;
  border:1px solid #F0F1F8;
}
.float-badge b{font-family:var(--num);font-size:22px;font-weight:800;color:var(--ink);letter-spacing:-.5px}
.float-badge span{font-size:12.5px;color:var(--muted)}
.fb-1{left:-14px;top:34px}
.fb-2{right:-6px;bottom:38px}

/* ===== 通用板块 ===== */
.sec{padding:88px 0}
.sec-alt{background:var(--bg-alt)}
.sec-white{background:#fff}
.sec-dark{background:linear-gradient(180deg,var(--dark-a) 0%,var(--dark-b) 100%);padding:96px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:1.5px;
  color:var(--teal);text-transform:uppercase;font-weight:600;margin-bottom:14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--teal);display:block}
.sec-title{font-size:34px;line-height:1.3;font-weight:700;margin-bottom:14px}
.sec-title.bar{padding-left:16px;border-left:3px solid;border-image:var(--grad) 1;border-image-slice:1}
.sec-desc{font-size:16px;color:var(--text);max-width:660px}
.sec-head{margin-bottom:40px}
.sec-head.row-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.text-link{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;color:var(--brand-deep)}
.text-link i{font-style:normal;transition:transform var(--t),color var(--t)}
.text-link:hover i{transform:translateX(4px);color:var(--accent)}

/* ===== 卡片 ===== */
.card-x{
  background:#fff;border:1px solid var(--card-line);border-radius:var(--r-card);
  padding:28px;height:100%;box-shadow:var(--sh);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card-x:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:#DCD9FB}
.card-x.wide{padding:34px}
.card-ico{
  width:48px;height:48px;border-radius:14px;background:var(--brand-light);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.card-ico.teal{background:var(--teal-light)}
.card-ico svg{width:24px;height:24px;stroke:var(--brand-deep);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.card-ico.teal svg{stroke:#0EA79A}
.card-x h3{font-size:18px;font-weight:600;margin-bottom:10px}
.card-x.wide h3{font-size:22px}
.card-x p{font-size:14px;line-height:1.8;color:var(--text)}
.card-num{
  font-family:var(--num);font-size:13px;font-weight:800;color:var(--accent);
  letter-spacing:1px;display:block;margin-bottom:12px;
}
.mini-list{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px}
.mini-list span{
  font-size:12.5px;color:var(--brand-deep);background:var(--brand-light);
  border-radius:var(--r-pill);padding:4px 12px;
}
.mini-list span.t{background:var(--teal-light);color:#0E9A8E}

/* ===== 深色数据区 ===== */
.sec-dark .sec-title,.sec-dark h2,.sec-dark h3{color:#fff}
.sec-dark .sec-desc{color:#B9BCD4;max-width:640px}
.stat-card{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);
  border-radius:var(--r-card);padding:24px;height:100%;
  transition:transform var(--t),border-color var(--t),background var(--t);
}
.stat-card:hover{transform:translateY(-4px);border-color:rgba(18,196,180,.45);background:rgba(255,255,255,.08)}
.stat-card b{font-family:var(--num);font-size:40px;font-weight:800;color:#fff;letter-spacing:-1px;display:block;line-height:1.1}
.stat-card b em{font-style:normal;font-size:18px;color:var(--teal);margin-left:4px}
.stat-card span{display:block;font-size:13.5px;color:#B9BCD4;margin-top:8px}
.dark-badges{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:34px}
.badge-pill{
  display:inline-flex;align-items:center;gap:10px;border-radius:16px;padding:12px 18px;
  background:#EEF0FF;font-size:13px;color:var(--muted);
}
.badge-pill.teal{background:var(--teal-light)}
.badge-pill i{width:8px;height:8px;border-radius:50%;background:var(--accent);display:block}
.badge-pill b{font-family:var(--num);font-weight:800;font-size:17px;color:var(--ink)}

/* ===== 案例区 ===== */
.case-big{position:relative;border-radius:24px;overflow:hidden;height:100%;min-height:360px;box-shadow:var(--sh);border:1px solid var(--card-line)}
.case-big img{width:100%;height:100%;object-fit:cover;aspect-ratio:3/2}
.case-big .veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,21,48,.05) 30%,rgba(20,21,48,.78) 100%)}
.case-big .cap{position:absolute;left:0;right:0;bottom:0;padding:30px;color:#fff}
.case-big .cap h3{color:#fff;font-size:22px;margin-bottom:10px}
.case-big .cap p{color:rgba(255,255,255,.86);font-size:14px;margin-bottom:14px}
.case-big .cap .metric{display:flex;gap:26px;flex-wrap:wrap}
.case-big .cap .metric b{font-family:var(--num);font-size:22px;font-weight:800;color:#fff}
.case-big .cap .metric span{display:block;font-size:12.5px;color:rgba(255,255,255,.7)}
.case-small{background:#fff;border:1px solid var(--card-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh);height:100%;transition:transform var(--t),box-shadow var(--t),border-color var(--t)}
.case-small:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:#DCD9FB}
.case-small img{width:100%;aspect-ratio:16/9;object-fit:cover}
.case-small .body{padding:22px}
.case-small h3{font-size:18px;font-weight:600;margin-bottom:8px}
.case-small p{font-size:14px;color:var(--text)}
.case-small .num-line{font-family:var(--num);font-size:15px;font-weight:700;color:var(--brand-deep);margin-top:12px}

/* ===== 流程 ===== */
.steps{position:relative;padding-left:34px}
.steps::before{content:"";position:absolute;left:5px;top:8px;bottom:8px;width:2px;background:var(--grad);border-radius:2px}
.step{position:relative;padding-bottom:36px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:-34px;top:6px;width:12px;height:12px;border-radius:50%;
  background:#fff;border:3px solid var(--brand);
}
.step .num{font-family:var(--num);font-size:14px;font-weight:800;color:var(--accent);letter-spacing:1px}
.step h3{font-size:20px;font-weight:600;margin:6px 0 8px}
.step p{font-size:14px;line-height:1.85}
.sticky-card{
  position:sticky;top:104px;
  background:#fff;border:1px solid var(--card-line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh);
}
.sticky-card h3{font-size:19px;font-weight:600;margin-bottom:12px}
.sticky-card p{font-size:14px}

/* ===== CMS 列表 ===== */
.feed{display:grid;grid-template-columns:1fr 1fr;gap:0 32px}
.feed-row{
  display:flex;align-items:flex-start;gap:20px;padding:22px 12px;
  border-bottom:1px solid #EFEFF6;border-radius:14px;color:inherit;
  transition:background var(--t);
}
.feed-row:hover{background:#F8F9FE}
.date-chip{
  flex:0 0 96px;width:96px;height:96px;border-radius:18px;background:var(--brand-light);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  text-align:center;padding:8px;
}
.date-chip .d{font-family:var(--num);font-size:15px;font-weight:800;color:var(--brand-deep);line-height:1.3}
.date-chip .m{font-size:11.5px;color:var(--muted)}
.feed-body{flex:1;min-width:0}
.chip{
  display:inline-block;font-size:12px;color:var(--brand-deep);background:var(--brand-light);
  border-radius:var(--r-pill);padding:3px 12px;margin-bottom:8px;
}
.feed-title{font-size:17px;font-weight:600;line-height:1.55;margin-bottom:6px;color:var(--ink);transition:color var(--t);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.feed-row:hover .feed-title{color:var(--brand)}
.feed-excerpt{font-size:14px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:0}
.feed-arrow{flex:0 0 auto;font-family:var(--num);color:var(--muted);transition:transform var(--t),color var(--t);padding-top:6px}
.feed-row:hover .feed-arrow{transform:translateX(4px);color:var(--accent)}
.feed-empty{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  min-height:180px;text-align:center;background:#fff;border:1px dashed #DCDDEB;border-radius:var(--r-card);padding:32px;
}
.feed-empty svg{width:40px;height:40px;stroke:#C7C9DC;fill:none;stroke-width:1.5}
.feed-empty b{font-size:15px;color:var(--ink);font-weight:600}
.feed-empty span{font-size:13.5px;color:var(--muted)}
.feed-more{display:flex;justify-content:center;margin-top:32px}

/* ===== FAQ ===== */
.faq-item{background:#fff;border-radius:16px;border:1px solid transparent;margin-bottom:12px;box-shadow:var(--sh);overflow:hidden;transition:border-color var(--t)}
.faq-item.open{border-color:#DCD9FB}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;background:none;border:0;
  padding:20px 24px;cursor:pointer;text-align:left;
}
.faq-q .qn{font-family:var(--num);font-size:14px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;flex:0 0 auto}
.faq-q .qt{flex:1;font-size:17px;font-weight:600;color:var(--ink)}
.faq-q .qi{flex:0 0 auto;width:20px;height:20px;position:relative;transition:transform var(--t)}
.faq-q .qi::before,.faq-q .qi::after{content:"";position:absolute;background:var(--brand);border-radius:2px}
.faq-q .qi::before{left:0;top:9px;width:20px;height:1.5px}
.faq-q .qi::after{top:0;left:9px;width:1.5px;height:20px}
.faq-item.open .qi{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a .inner{padding:0 24px 22px 54px;border-top:1px solid #EFEFF6;padding-top:16px}
.faq-a p{font-size:15px;line-height:1.9;color:var(--text)}

/* ===== 联系 / 表单 ===== */
.contact-list{margin-top:24px}
.contact-row{display:flex;align-items:center;gap:14px;padding:16px 0;border-bottom:1px solid var(--line)}
.contact-row:first-child{border-top:1px solid var(--line)}
.contact-row .ci{width:38px;height:38px;border-radius:12px;background:var(--brand-light);display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.contact-row .ci svg{width:19px;height:19px;stroke:var(--brand-deep);fill:none;stroke-width:1.5}
.contact-row b{display:block;font-size:15px;color:var(--ink);font-weight:600}
.contact-row span{font-size:13.5px;color:var(--muted)}
.form-card{background:#fff;border:1px solid var(--card-line);border-radius:var(--r-card);padding:32px;box-shadow:var(--sh)}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:500;color:var(--ink);margin-bottom:8px}
.field label .req{color:var(--accent);margin-left:4px}
.field input,.field textarea{
  width:100%;height:48px;border-radius:var(--r-md);border:1px solid #E2E3EE;
  padding:0 16px;background:#FCFCFE;color:var(--ink);transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.field textarea{height:120px;padding:12px 16px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:#fff;
  box-shadow:0 0 0 3px rgba(91,75,232,.14);
}
.form-note{font-size:12.5px;color:var(--muted);margin-top:12px}
.form-msg{font-size:14px;color:#0E9A8E;margin-top:12px;display:none}
.form-msg.on{display:block}

/* ===== CTA 横幅 ===== */
.cta-band{
  background:var(--grad);border-radius:28px;padding:56px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:0 24px 60px rgba(91,75,232,.24);
}
.cta-band h2{color:#fff;font-size:30px;line-height:1.35;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.88);font-size:15.5px;margin:0;max-width:620px}

/* ===== 页脚 ===== */
.site-footer{background:linear-gradient(180deg,var(--dark-a) 0%,var(--dark-b) 100%);padding:72px 0 32px;color:#B9BCD4}
.f-cols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:0}
.f-col{padding:0 28px;border-right:1px solid rgba(255,255,255,.08)}
.f-col:first-child{padding-left:0}
.f-col:last-child{border-right:0;padding-right:0}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.f-brand .brand-text b{color:#fff}
.f-brand .brand-text span{color:rgba(255,255,255,.5)}
.f-col p{font-size:14px;line-height:1.85;color:#B9BCD4;margin-bottom:10px}
.f-col h4{font-size:15px;color:#fff;margin-bottom:18px;font-weight:600}
.f-link{display:block;font-size:14px;color:#B9BCD4;padding:7px 0;transition:color var(--t),transform var(--t)}
.f-link:hover{color:var(--teal);transform:translateX(2px)}
.f-bottom{
  margin-top:52px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8E91AC;
}
.f-bottom span{display:inline-block}

/* ===== 交互与响应式 ===== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

@media (max-width:1200px){
  .container{max-width:100%;padding-left:24px;padding-right:24px}
  .sec{padding:72px 0}
  .sec-dark{padding:76px 0}
}
@media (max-width:992px){
  .menu,.nav-tools .nav-cta{display:none}
  .hamburger{display:flex}
  .nav-inner{height:60px}
  .hero{padding:64px 0 68px}
  .hero h1{font-size:34px}
  .hero-media{margin-top:36px}
  .fb-1{left:8px;top:16px}
  .fb-2{right:8px;bottom:16px}
  .sticky-card{position:static;margin-top:32px}
  .feed{grid-template-columns:1fr}
  .cta-band{padding:40px 28px}
  .f-cols{grid-template-columns:1fr 1fr;gap:36px 0}
  .f-col{border-right:0;padding:0}
  .f-col:nth-child(odd){padding-right:20px}
  .f-col:nth-child(even){padding-left:20px;border-left:1px solid rgba(255,255,255,.08)}
}
@media (max-width:768px){
  .sec{padding:56px 0}
  .sec-dark{padding:64px 0}
  .hero h1{font-size:30px}
  .hero-sub{font-size:16px}
  .sec-title{font-size:24px}
  .card-x{padding:22px}
  .form-card{padding:24px}
  .hero-actions .btn-grad,.hero-actions .btn-ghost{width:100%}
  .hero-actions{gap:12px}
  .cta-band h2{font-size:24px}
  .cta-band .btn-white{width:100%}
  .card-x,.case-small,.stat-card,.faq-item{box-shadow:0 6px 18px rgba(22,23,43,.06)}
  .feed-row{padding:18px 8px;gap:14px}
  .date-chip{flex:0 0 74px;width:74px;height:74px;border-radius:14px}
  .date-chip .d{font-size:13px}
  .faq-q{padding:16px 18px;gap:12px}
  .faq-q .qt{font-size:16px}
  .faq-a .inner{padding:14px 18px 18px 18px}
}
@media (max-width:576px){
  .container{padding-left:20px;padding-right:20px}
  .hero-stats{gap:22px}
  .f-cols{grid-template-columns:1fr;gap:0}
  .f-col{padding:24px 0 !important;border-left:0 !important;border-bottom:1px solid rgba(255,255,255,.08)}
  .f-col:last-child{border-bottom:0}
  .cta-band{border-radius:22px;padding:32px 22px}
  .f-bottom{justify-content:flex-start}
}

/* roulang page: article */
:root{
  --brand:#5B4BE8;
  --brand-dark:#3F32C4;
  --brand-light:#EEF0FF;
  --teal:#12C4B4;
  --teal-light:#E4FAF6;
  --accent:#FF7A45;
  --bg:#F6F7FC;
  --bg-alt:#F1F2FA;
  --ink:#16172B;
  --ink-2:#4A4C63;
  --muted:#7C8098;
  --line:#E7E8F0;
  --card-line:#EDEEF6;
  --grad:linear-gradient(135deg,#5B4BE8 0%,#12C4B4 100%);
  --shadow-sm:0 8px 24px rgba(22,23,43,.06);
  --shadow-lg:0 16px 40px rgba(91,75,232,.14);
  --r-sm:10px;
  --r-md:12px;
  --r-card:18px;
  --r-lg:20px;
  --ease:.28s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;color:var(--ink);font-weight:700;line-height:1.3}
p{margin:0 0 16px}
a{text-decoration:none;color:inherit;transition:color var(--ease),background var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease)}
img{max-width:100%;height:auto;display:block}
button{font-family:inherit}
ul,ol{margin:0}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(246,247,252,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:11px;background:var(--grad);
  color:#fff;display:grid;place-items:center;font-weight:800;font-size:18px;
  font-family:"DIN Alternate","Barlow","SF Mono",sans-serif;line-height:1;
  box-shadow:0 6px 16px rgba(91,75,232,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:.2px}
.brand-text span{font-size:11px;color:var(--muted);letter-spacing:1.4px}
.menu{display:flex;align-items:center;gap:32px}
.menu a{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-2);padding:6px 0;
}
.menu a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;border-radius:2px;
  background:var(--grad);transition:width var(--ease);
}
.menu a:hover{color:var(--brand)}
.menu a:hover::after{width:100%}
.menu a.active{color:var(--ink);font-weight:600}
.menu a.active::after{width:100%}
.menu a.active::before{
  content:"";position:absolute;top:-3px;left:50%;transform:translateX(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--accent);
}
.nav-right{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.icon-btn{
  width:38px;height:38px;border-radius:999px;border:1.5px solid var(--line);background:#fff;
  display:grid;place-items:center;cursor:pointer;color:var(--ink-2);
}
.icon-btn:hover{border-color:#DCD9FB;color:var(--brand)}
.icon-btn svg{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.btn-pill{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 24px;border-radius:999px;font-size:15px;font-weight:600;border:none;
  cursor:pointer;transition:all var(--ease);white-space:nowrap;
}
.btn-primary-pill{background:var(--grad);color:#fff}
.btn-primary-pill:hover{color:#fff;transform:translateY(-2px);box-shadow:0 12px 28px rgba(91,75,232,.28)}
.btn-ghost-pill{background:#fff;color:var(--brand);border:1px solid var(--card-line)}
.btn-ghost-pill:hover{border-color:#DCD9FB;transform:translateY(-2px);color:var(--brand-dark)}
.btn-block{width:100%}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:12px;background:#fff;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer;
}
.nav-toggle i{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.28s ease}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,21,48,.45);opacity:0;visibility:hidden;
  transition:opacity var(--ease),visibility var(--ease);z-index:1040;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:290px;max-width:86vw;background:#fff;z-index:1050;
  transform:translateX(102%);transition:transform .3s ease;display:flex;flex-direction:column;
  padding:20px 22px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid #EEF0F6}
.drawer-close{
  width:34px;height:34px;border-radius:999px;border:1px solid var(--line);background:#fff;
  font-size:18px;line-height:1;color:var(--muted);cursor:pointer;
}
.drawer-close:hover{color:var(--brand);border-color:#DCD9FB}
.drawer-link{
  display:flex;align-items:center;height:56px;font-size:15px;color:var(--ink-2);
  border-bottom:1px solid #EEF0F6;font-weight:500;
}
.drawer-link:hover,.drawer-link.active{color:var(--brand)}
.drawer-btn{margin-top:22px}

/* ============ 面包屑 ============ */
.crumb-bar{background:var(--bg-alt);border-bottom:1px solid var(--line);min-height:56px;display:flex;align-items:center}
.crumb{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--muted);min-width:0;padding:12px 0}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb em{font-style:normal;color:var(--ink-2)}
.crumb-sep{color:#C3C6D6}
.crumb-cur{color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:520px}

/* ============ 文章头部 ============ */
.article-head{background:#fff;border-bottom:1px solid var(--line);padding:52px 0 34px}
.tag-pill{
  display:inline-flex;align-items:center;gap:7px;padding:5px 15px;border-radius:999px;
  background:var(--brand-light);color:var(--brand);font-size:13px;font-weight:600;
}
.tag-pill::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.article-head h1{
  font-size:44px;line-height:1.22;letter-spacing:-.5px;margin:18px 0 22px;max-width:900px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:0}
.meta-row span{
  font-size:14px;color:var(--muted);padding:0 18px;border-left:1px solid var(--line);line-height:1.5;
}
.meta-row span:first-child{padding-left:0;border-left:none}
.meta-row b{color:var(--ink-2);font-weight:600;font-family:"DIN Alternate","Barlow","SF Mono",sans-serif}

/* ============ 正文区 ============ */
.article-main{padding:40px 0 0}
.article-body{
  background:#fff;border:1px solid var(--card-line);border-radius:20px;
  padding:44px 42px;box-shadow:var(--shadow-sm);font-size:16px;line-height:1.9;color:var(--ink-2);
  overflow-wrap:break-word;
}
.article-body > :first-child{margin-top:0}
.article-body > :last-child{margin-bottom:0}
.article-body p{margin:0 0 18px}
.article-body h2{
  position:relative;font-size:26px;line-height:1.4;margin:40px 0 16px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;border-radius:3px;background:var(--grad);
}
.article-body h3{font-size:19px;color:var(--brand);margin:28px 0 12px}
.article-body h4{font-size:17px;margin:22px 0 10px}
.article-body ul,.article-body ol{padding-left:22px;margin:0 0 18px}
.article-body ul{list-style:none;padding-left:20px}
.article-body ul > li{position:relative;margin-bottom:9px}
.article-body ul > li::before{
  content:"";position:absolute;left:-18px;top:11px;width:6px;height:6px;border-radius:50%;background:var(--accent);
}
.article-body ol > li{margin-bottom:9px}
.article-body ol > li::marker{color:var(--brand);font-weight:700}
.article-body blockquote{
  margin:22px 0;padding:18px 24px;border-left:3px solid var(--brand);
  background:linear-gradient(135deg,#EEF0FF 0%,#E4FAF6 100%);
  border-radius:0 14px 14px 0;color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:16px;margin:20px auto}
.article-body figure{margin:22px 0}
.article-body figcaption{
  text-align:center;font-size:13px;color:var(--muted);margin-top:10px;
}
.article-body table{
  width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;line-height:1.7;
}
.article-body th{
  background:var(--bg);text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);color:var(--ink);
  font-weight:600;
}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--line)}
.article-body a{color:var(--brand);font-weight:500;border-bottom:1px solid rgba(91,75,232,.28)}
.article-body a:hover{color:var(--brand-dark);border-bottom-color:var(--brand-dark)}
.article-body code{
  background:var(--bg-alt);border-radius:6px;padding:2px 7px;font-size:14px;color:var(--brand-dark);
  font-family:"SF Mono","Consolas",monospace;
}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0}

/* 空态 */
.not-found{text-align:center;padding:26px 10px 16px}
.not-found-icon{
  width:52px;height:52px;border-radius:16px;background:var(--brand-light);color:var(--brand);
  display:grid;place-items:center;font-size:24px;font-weight:800;margin:0 auto 18px;
}
.not-found h2{font-size:24px;margin-bottom:12px}
.not-found p{font-size:15px;color:var(--muted);max-width:520px;margin:0 auto 24px}

/* ============ 相关推荐 ============ */
.rel-block{margin-top:32px}
.sec-title-sm{position:relative;font-size:20px;padding-left:14px;margin-bottom:18px}
.sec-title-sm::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:3px;border-radius:3px;background:var(--grad);
}
.rel-list{display:flex;flex-direction:column;gap:14px}
.rel-card{
  display:flex;gap:18px;align-items:center;background:#fff;border:1px solid var(--card-line);
  border-radius:18px;padding:14px;box-shadow:var(--shadow-sm);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#DCD9FB}
.rel-card img{width:150px;height:96px;object-fit:cover;border-radius:14px;flex:0 0 auto}
.rel-card h3{font-size:16.5px;line-height:1.5;margin-bottom:6px}
.rel-card:hover h3{color:var(--brand)}
.rel-card p{font-size:13.5px;color:var(--muted);margin:0 0 8px;line-height:1.7}
.rel-link{font-size:13px;color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:4px}
.rel-link i{font-style:normal;transition:transform var(--ease)}
.rel-card:hover .rel-link i{transform:translateX(4px)}

/* 返回按钮组 */
.back-group{display:flex;align-items:center;gap:22px;margin:30px 0 0;flex-wrap:wrap}
.text-link{font-size:14.5px;font-weight:600;color:var(--muted)}
.text-link:hover{color:var(--brand)}

/* ============ 侧栏 ============ */
.side-sticky{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px}
.side-card{
  background:#fff;border:1px solid var(--card-line);border-radius:20px;padding:24px 22px;box-shadow:var(--shadow-sm);
}
.side-card h3{font-size:16px;margin-bottom:12px;padding-left:12px;position:relative}
.side-card h3::before{
  content:"";position:absolute;left:0;top:4px;bottom:4px;width:3px;border-radius:3px;background:var(--grad);
}
.side-link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;font-size:14.5px;color:var(--ink-2);border-bottom:1px solid #F2F3F9;
}
.side-link:last-child{border-bottom:none;padding-bottom:0}
.side-link:hover{color:var(--brand)}
.side-link span{color:#C3C6D6;transition:transform var(--ease),color var(--ease)}
.side-link:hover span{transform:translateX(3px);color:var(--accent)}
.side-rel{display:flex;gap:12px;align-items:center;padding:11px 0;border-bottom:1px solid #F2F3F9}
.side-rel:last-of-type{border-bottom:none}
.side-rel img{width:66px;height:50px;object-fit:cover;border-radius:10px;flex:0 0 auto}
.side-rel h4{font-size:14px;font-weight:600;color:var(--ink-2);line-height:1.55;margin:0}
.side-rel:hover h4{color:var(--brand)}
.side-cta{
  background:linear-gradient(135deg,#EEF0FF 0%,#E4FAF6 100%);
  border-color:transparent;
}
.side-cta p{font-size:14px;color:var(--ink-2);margin-bottom:16px}
.side-cta .btn-pill{padding:10px 20px;font-size:14px}

/* ============ CTA 横幅 ============ */
.cta-wrap{padding:76px 0 0}
.cta-banner{
  background:var(--grad);border-radius:28px;padding:56px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
  box-shadow:0 20px 50px rgba(91,75,232,.22);
}
.cta-banner h2{color:#fff;font-size:30px;line-height:1.35;margin-bottom:12px}
.cta-banner p{color:rgba(255,255,255,.88);margin:0;font-size:15px;max-width:560px;line-height:1.8}
.btn-white{
  display:inline-flex;align-items:center;gap:8px;background:#fff;color:var(--brand);
  padding:13px 28px;border-radius:999px;font-weight:600;font-size:15px;
  transition:all var(--ease);white-space:nowrap;
}
.btn-white:hover{color:var(--brand-dark);transform:translateY(-2px);box-shadow:0 14px 30px rgba(20,21,48,.22)}

/* ============ 页脚 ============ */
.site-footer{
  background:linear-gradient(180deg,#141530 0%,#1E1B45 100%);
  color:#B9BCD4;padding:72px 0 32px;margin-top:88px;
}
.f-cols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr}
.f-col{padding:0 28px;border-left:1px solid rgba(255,255,255,.08)}
.f-col:first-child{padding-left:0;border-left:none}
.f-col:last-child{padding-right:0}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.f-brand .brand-text b{color:#fff}
.f-brand .brand-text span{color:#8A8DAB}
.f-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
.f-col p{font-size:14px;line-height:1.85;color:#B9BCD4;margin:0 0 10px}
.f-link{display:block;font-size:14px;color:#B9BCD4;padding:6px 0}
.f-link:hover{color:var(--teal);transform:translateX(2px)}
.f-bottom{
  border-top:1px solid rgba(255,255,255,.08);margin-top:42px;padding-top:24px;
  display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;
  font-size:13px;color:#7C8098;
}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .cta-banner{padding:48px}
  .article-head h1{font-size:38px}
}
@media (max-width:991.98px){
  .nav-inner{height:60px}
  .site-header{height:60px}
  .menu{display:none}
  .nav-toggle{display:flex}
  .nav-right .btn-primary-pill{display:none}
  .article-head{padding:38px 0 26px}
  .article-head h1{font-size:32px}
  .side-sticky{position:static}
  .f-cols{grid-template-columns:1fr 1fr;row-gap:36px}
  .f-col{padding:0 20px}
  .f-col:nth-child(3){border-left:none;padding-left:0}
  .cta-banner{padding:38px 30px}
  .cta-banner h2{font-size:24px}
}
@media (max-width:767.98px){
  .container{padding:0 20px}
  .article-head h1{font-size:30px;line-height:1.28}
  .meta-row span{padding:0 12px}
  .article-body{padding:26px 20px;border-radius:16px}
  .article-body h2{font-size:22px;margin-top:32px}
  .article-body h3{font-size:17.5px}
  .rel-card{flex-direction:column;align-items:stretch}
  .rel-card img{width:100%;height:170px}
  .cta-wrap{padding:56px 0 0}
  .cta-banner{border-radius:20px;padding:32px 22px}
  .cta-banner h2{font-size:21px}
  .cta-banner .btn-white{width:100%;justify-content:center}
  .back-group{gap:16px}
  .back-group .btn-pill{width:100%}
  .site-footer{margin-top:64px;padding:56px 0 26px}
  .crumb-cur{max-width:180px}
}
@media (max-width:575.98px){
  .f-cols{grid-template-columns:1fr}
  .f-col{padding:0;border-left:none;border-top:1px solid rgba(255,255,255,.08);padding-top:24px}
  .f-col:first-child{border-top:none;padding-top:0}
  .f-bottom{flex-direction:column;align-items:flex-start}
  .side-card{padding:20px 18px}
}

/* roulang page: category1 */
:root{
  --pri:#5B4BE8;
  --pri-d:#3F32C4;
  --pri-l:#EEF0FF;
  --sec:#12C4B4;
  --sec-l:#E4FAF6;
  --accent:#FF7A45;
  --bg:#F6F7FC;
  --bg-alt:#F1F2FA;
  --white:#FFFFFF;
  --ink:#16172B;
  --text:#4A4C63;
  --muted:#7C8098;
  --line:#E7E8F0;
  --card-line:#EDEEF6;
  --grad:linear-gradient(135deg,#5B4BE8 0%,#12C4B4 100%);
  --dark-a:#141530;
  --dark-b:#1E1B45;
  --r-s:10px;
  --r-in:12px;
  --r-card:20px;
  --r-lg:28px;
  --sh:0 8px 24px rgba(22,23,43,.06);
  --sh-h:0 16px 40px rgba(91,75,232,.14);
  --ease:.28s ease;
  --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"DIN Alternate","Barlow","SF Mono",ui-monospace,monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
a{color:inherit;text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--sec);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(246,247,252,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.head-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{
  width:32px;height:32px;border-radius:11px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:800;font-size:17px;line-height:1;
  font-family:var(--font-num);box-shadow:0 6px 16px rgba(91,75,232,.28);
  flex:0 0 32px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:15px;color:var(--ink);font-weight:700;letter-spacing:.2px}
.brand-text span{font-size:11px;color:var(--muted);letter-spacing:1.4px}
.menu{display:flex;align-items:center;gap:32px}
.menu a{position:relative;font-size:15px;font-weight:500;color:#3E4056;padding:6px 0}
.menu a::after{
  content:"";position:absolute;left:0;bottom:-6px;height:2px;width:0;
  background:var(--grad);border-radius:2px;transition:width var(--ease);
}
.menu a::before{
  content:"";position:absolute;left:50%;top:-9px;transform:translateX(-50%) scale(0);
  width:6px;height:6px;border-radius:50%;background:var(--accent);transition:transform var(--ease);
}
.menu a:hover{color:var(--pri)}
.menu a:hover::after{width:100%}
.menu a.active{color:var(--pri);font-weight:600}
.menu a.active::after{width:100%}
.menu a.active::before{transform:translateX(-50%) scale(1)}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;
  border:1px solid var(--line);background:#fff;
  align-items:center;justify-content:center;flex-direction:column;gap:6px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform var(--ease),opacity var(--ease)}
.nav-toggle[aria-expanded="true"] span:first-child{transform:translateY(4px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:last-child{transform:translateY(-4px) rotate(-45deg)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,21,48,.45);
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);z-index:1040;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:290px;max-width:86vw;background:#fff;
  z-index:1050;transform:translateX(100%);transition:transform var(--ease);
  display:flex;flex-direction:column;padding:20px;box-shadow:-16px 0 40px rgba(20,21,48,.14);
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid #EEF0F6}
.drawer-menu{display:flex;flex-direction:column;margin-top:8px}
.drawer-menu a{
  font-size:15px;color:#3E4056;padding:0 4px;height:56px;display:flex;align-items:center;
  border-bottom:1px solid #EEF0F6;transition:color var(--ease),background var(--ease)
}
.drawer-menu a.active{color:var(--pri);font-weight:600}
.drawer-menu a:hover{color:var(--pri);background:#F8F9FE}
.drawer-cta{margin-top:auto;justify-content:center;width:100%}
body.no-scroll{overflow:hidden}

/* ============ buttons / pills ============ */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:999px;background:var(--grad);color:#fff;
  font-size:15px;font-weight:600;border:0;
  box-shadow:0 10px 24px rgba(91,75,232,.22);transition:transform var(--ease),box-shadow var(--ease);
}
.btn-main:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(91,75,232,.28)}
.btn-main:active{transform:translateY(0)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;background:#fff;color:var(--ink);
  border:1px solid #D9DAEA;font-size:15px;font-weight:600;transition:border-color var(--ease),color var(--ease),transform var(--ease);
}
.btn-ghost:hover{border-color:var(--pri);color:var(--pri);transform:translateY(-2px)}
.btn-white{
  display:inline-flex;align-items:center;justify-content:center;
  padding:14px 28px;border-radius:999px;background:#fff;color:var(--pri);
  font-size:15px;font-weight:700;transition:transform var(--ease),box-shadow var(--ease);
}
.btn-white:hover{transform:translateY(-2px);color:var(--pri-d);box-shadow:0 14px 30px rgba(20,21,48,.18)}
.pill{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:#fff;color:var(--pri);font-size:13px;font-weight:600;
  border:1px solid #E2E1F8;box-shadow:0 4px 12px rgba(91,75,232,.08);
}
.pill::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.tag{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;
  background:var(--sec-l);color:#0B8B80;font-size:12.5px;font-weight:600;letter-spacing:.3px;
}

/* ============ page hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:52px 0 56px;min-height:280px;
  background:linear-gradient(135deg,#EEF0FF 0%,#E6FAF7 100%);
  border-bottom:1px solid var(--line);
  display:flex;align-items:center;
}
.page-hero::before{
  content:"";position:absolute;top:-140px;right:-100px;width:420px;height:420px;border-radius:50%;
  background:var(--grad);filter:blur(80px);opacity:.18;pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;right:6%;bottom:-60px;width:220px;height:220px;
  background:linear-gradient(135deg,rgba(91,75,232,.10),rgba(18,196,180,.10));
  transform:rotate(18deg);border-radius:36px;pointer-events:none;
}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px;position:relative;z-index:1}
.crumbs a:hover{color:var(--pri)}
.crumbs span.sep{color:#C3C5D6}
.page-hero h1{
  font-size:44px;line-height:1.22;letter-spacing:-.5px;margin:16px 0 0;
  position:relative;z-index:1;max-width:820px;
}
.hero-sub{font-size:17px;line-height:1.75;color:var(--text);margin:14px 0 0;max-width:640px;position:relative;z-index:1}

/* ============ sections ============ */
.sec{padding:88px 0}
.sec-alt{background:var(--white)}
.sec-alt2{background:var(--bg-alt)}
.sec-head{margin-bottom:32px;max-width:760px}
.sec-head h2{font-size:34px;line-height:1.3;position:relative;padding-left:16px}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.42em;width:3px;height:20px;border-radius:2px;background:var(--grad);
}
.sec-head p{margin-top:14px;font-size:16px;color:var(--text)}
.block-title{font-size:22px;margin-bottom:18px}

/* ============ intro card (left 5) ============ */
.intro-card{
  background:#fff;border:1px solid var(--card-line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--sh);position:sticky;top:96px;
}
.intro-card h2{font-size:24px;line-height:1.35;margin-bottom:14px}
.intro-card p{font-size:15px;color:var(--text)}
.stat-badge{
  display:flex;align-items:center;gap:12px;margin:24px 0 20px;
  background:var(--pri-l);border-radius:16px;padding:16px 18px;
}
.stat-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);flex:0 0 8px}
.stat-badge strong{font-family:var(--font-num);font-size:24px;font-weight:800;color:var(--pri-d);letter-spacing:-.5px}
.stat-badge span.desc{font-size:13px;color:var(--muted);line-height:1.6}
.mini-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;color:var(--text);padding:12px 0;border-bottom:1px solid #EFEFF6;
}
.mini-list li:last-child{border-bottom:0}
.mini-list li::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--sec);margin-top:11px;flex:0 0 6px;
}

/* ============ row list (right 7) ============ */
.row-list{border-bottom:1px solid #EFEFF6}
.row-card{
  display:flex;gap:20px;align-items:flex-start;
  padding:22px 0;border-top:1px solid #EFEFF6;
  transition:background var(--ease);
}
.row-card:hover{background:#F8F9FE}
.rc-media{
  flex:0 0 168px;width:168px;aspect-ratio:16/10;border-radius:14px;overflow:hidden;
  background:var(--grad);position:relative;
}
.rc-media img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease)}
.row-card:hover .rc-media img{transform:scale(1.03)}
.rc-body{flex:1 1 auto;min-width:0}
.rc-num{
  display:inline-block;font-family:var(--font-num);font-size:13px;font-weight:800;
  color:var(--accent);letter-spacing:1.5px;margin-bottom:4px;
}
.rc-body h3{font-size:18px;line-height:1.45;margin-bottom:8px;transition:color var(--ease)}
.row-card:hover .rc-body h3{color:var(--pri)}
.rc-body p{font-size:14px;line-height:1.8;color:var(--text);margin:0}

/* ============ dark stat block ============ */
.sec-dark{
  background:linear-gradient(180deg,#141530 0%,#1E1B45 100%);
  padding:96px 0;color:#C9CBDE;
}
.sec-dark h2{color:#fff;font-size:34px;line-height:1.3}
.sec-dark .sec-head p{color:#A9ACC7;max-width:640px}
.dark-stat{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.10);
  border-radius:20px;padding:24px;height:100%;
  display:flex;flex-direction:column;gap:8px;transition:border-color var(--ease),transform var(--ease);
}
.dark-stat:hover{border-color:rgba(18,196,180,.45);transform:translateY(-4px)}
.dark-stat .dot{width:8px;height:8px;border-radius:50%;background:var(--accent)}
.dark-stat strong{font-family:var(--font-num);font-size:34px;font-weight:800;color:#fff;letter-spacing:-1px;line-height:1.15}
.dark-stat span{font-size:13.5px;color:#A9ACC7}
.dark-note{margin-top:32px;max-width:640px;font-size:15px;line-height:1.9;color:#B9BCD4}

/* ============ refine grid ============ */
.refine-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 40px}
.refine-grid li{
  display:flex;gap:12px;align-items:flex-start;
  padding:18px 0;border-bottom:1px solid #E7E8F0;font-size:15px;line-height:1.8;
}
.refine-grid li .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);margin-top:11px;flex:0 0 8px}
.refine-grid li b{color:var(--ink);font-weight:600;margin-right:6px}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{
  background:#fff;border:1px solid var(--card-line);border-radius:16px;
  padding:4px 24px;transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item:hover{border-color:#DCD9FB;box-shadow:var(--sh)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 0;text-align:left;
}
.faq-q .q-text{display:flex;align-items:flex-start;gap:12px;font-size:17px;font-weight:600;color:var(--ink);line-height:1.6}
.faq-q .q-num{
  font-family:var(--font-num);font-size:14px;font-weight:800;letter-spacing:1px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  line-height:1.9;
}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 16px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--muted);border-radius:2px;transition:transform var(--ease),background var(--ease);
}
.faq-icon::before{left:0;top:7px;width:16px;height:1.5px}
.faq-icon::after{top:0;left:7px;width:1.5px;height:16px}
.faq-item.open .faq-icon::before{background:var(--pri)}
.faq-item.open .faq-icon::after{background:var(--pri);transform:rotate(90deg);opacity:0}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .35s ease;
}
.faq-a-inner{padding:16px 0 22px;border-top:1px solid #EFEFF6;font-size:15px;line-height:1.9;color:var(--text);max-width:780px}

/* ============ CTA band ============ */
.cta-band{
  background:var(--grad);border-radius:var(--r-lg);padding:56px;
  color:#fff;box-shadow:0 24px 60px rgba(91,75,232,.22);
}
.cta-band h2{color:#fff;font-size:32px;line-height:1.3;margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.9);font-size:15.5px;max-width:640px;margin:0}

/* ============ footer ============ */
.site-footer{
  background:linear-gradient(180deg,#141530 0%,#1E1B45 100%);
  color:#B9BCD4;padding:72px 0 32px;margin-top:0;
}
.f-cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:0}
.f-col{padding:0 28px;border-left:1px solid rgba(255,255,255,.08)}
.f-col:first-child{border-left:0;padding-left:0}
.f-col:last-child{padding-right:0}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.f-brand .brand-mark{width:32px;height:32px;border-radius:11px;background:var(--grad);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-family:var(--font-num);font-size:17px}
.f-brand .brand-text b{color:#fff;font-size:15px;font-weight:700;display:block}
.f-brand .brand-text span{font-size:11px;color:#8F93B4;letter-spacing:1.4px}
.f-col p{font-size:14px;line-height:1.8;color:#B9BCD4;margin-bottom:10px}
.f-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600}
.f-link{
  display:block;font-size:14px;color:#B9BCD4;padding:7px 0;transition:color var(--ease),transform var(--ease);
}
.f-link:hover{color:var(--sec);transform:translateX(2px)}
.f-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8F93B4;
}

/* ============ reveal ============ */
html.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease}
html.js .reveal.in{opacity:1;transform:none}

/* ============ responsive ============ */
@media (max-width:1199px){
  .container{padding-left:24px;padding-right:24px}
  .sec{padding:72px 0}
  .sec-dark{padding:80px 0}
}
@media (max-width:991px){
  .menu{display:none}
  .nav-toggle{display:flex}
  .head-inner{height:60px}
  .page-hero{padding:40px 0 44px;min-height:220px}
  .page-hero h1{font-size:32px}
  .hero-sub{font-size:16px}
  .intro-card{position:static;padding:26px}
  .row-card{flex-direction:column;gap:14px}
  .rc-media{flex:0 0 auto;width:100%;aspect-ratio:16/9}
  .refine-grid{grid-template-columns:1fr}
  .sec-dark .sec-head h2,.sec-head h2{font-size:26px}
  .f-cols{grid-template-columns:1fr 1fr;gap:32px 0}
  .f-col{border-left:0;padding:0}
  .f-col:nth-child(2){border-left:1px solid rgba(255,255,255,.08);padding-left:24px}
  .f-col:nth-child(4){border-left:1px solid rgba(255,255,255,.08);padding-left:24px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .sec{padding:56px 0}
  .sec-dark{padding:64px 0}
  .page-hero h1{font-size:30px;letter-spacing:-.3px}
  .sec-head h2,.sec-dark h2{font-size:24px}
  .cta-band{padding:32px 24px;border-radius:22px}
  .cta-band h2{font-size:23px}
  .cta-band .btn-white{width:100%;margin-top:20px}
  .faq-item{padding:2px 18px}
  .faq-q .q-text{font-size:16px}
  .dark-stat strong{font-size:28px}
  .f-cols{grid-template-columns:1fr;gap:28px}
  .f-col{border-left:0!important;padding-left:0!important;border-top:1px solid rgba(255,255,255,.08);padding-top:24px}
  .f-col:first-child{border-top:0;padding-top:0}
  .f-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .container{padding-left:20px;padding-right:20px}
  .page-hero h1{font-size:27px}
  .intro-card{padding:22px}
}

/* roulang page: category2 */
:root{
  --brand:#5B4BE8;
  --brand-dark:#3F32C4;
  --brand-soft:#EEF0FF;
  --teal:#12C4B4;
  --teal-soft:#E4FAF6;
  --accent:#FF7A45;
  --bg:#F6F7FC;
  --bg-alt:#F1F2FA;
  --dark-1:#141530;
  --dark-2:#1E1B45;
  --ink:#16172B;
  --text:#4A4C63;
  --muted:#7C8098;
  --line:#E7E8F0;
  --card-line:#EDEEF6;
  --r-s:10px;
  --r-m:12px;
  --r-card:20px;
  --sh-s:0 8px 24px rgba(22,23,43,.06);
  --sh-h:0 16px 40px rgba(91,75,232,.14);
  --grad:linear-gradient(135deg,#5B4BE8 0%,#12C4B4 100%);
  --ease:.28s ease;
  --font-num:"DIN Alternate","Barlow","SF Mono",ui-monospace,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease),transform var(--ease),box-shadow var(--ease)}
a:hover{color:var(--brand)}
ul{margin:0;padding:0;list-style:none}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.3}
button{font-family:inherit;cursor:pointer;border:0;background:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-white{background:#fff}
.section-alt{background:var(--bg-alt)}
.sec-head{margin-bottom:36px}
.sec-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:1.5px;text-transform:uppercase;color:var(--teal);font-weight:700;margin-bottom:12px}
.sec-head .eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.sec-head h2{font-size:34px;position:relative;padding-left:16px;line-height:1.3}
.sec-head h2::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:3px;background:var(--grad)}
.sec-head .lead{margin-top:14px;font-size:16px;color:var(--muted);max-width:760px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(246,247,252,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:32px;height:32px;border-radius:10px;background:var(--grad);
  color:#fff;display:grid;place-items:center;font-weight:800;font-size:17px;
  letter-spacing:-.5px;font-family:var(--font-num);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:15px;color:var(--ink);font-weight:700;letter-spacing:.2px}
.brand-text span{font-size:11px;color:var(--muted);letter-spacing:3px}
.menu{display:flex;align-items:center;gap:32px}
.menu a{position:relative;font-size:15px;font-weight:500;color:var(--text);padding:8px 0;white-space:nowrap}
.menu a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--grad);border-radius:2px;transition:width var(--ease)}
.menu a:hover{color:var(--brand)}
.menu a:hover::after{width:100%}
.menu a.active{color:var(--ink);font-weight:600}
.menu a.active::after{width:100%}
.menu a.active::before{content:"";position:absolute;left:50%;top:-2px;width:6px;height:6px;border-radius:50%;background:var(--accent);transform:translateX(-50%)}
.header-actions{display:flex;align-items:center;gap:14px;flex:none}
.icon-btn{
  width:38px;height:38px;border-radius:999px;border:1.5px solid #DCDDF0;background:#fff;
  display:grid;place-items:center;color:var(--text);font-size:15px;
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-grad{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:999px;background:var(--grad);color:#fff;
  font-size:15px;font-weight:600;box-shadow:0 10px 24px rgba(91,75,232,.24);
  transition:var(--ease);white-space:nowrap;
}
.btn-grad:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(91,75,232,.3)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:999px;background:#fff;color:var(--brand);
  border:1px solid #DCD9FB;font-size:15px;font-weight:600;transition:var(--ease);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-dark);transform:translateY(-2px);box-shadow:0 12px 26px rgba(91,75,232,.12)}
.btn-white{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;background:#fff;color:var(--brand);
  font-size:15px;font-weight:700;transition:var(--ease);
}
.btn-white:hover{color:var(--brand-dark);transform:translateY(-2px);box-shadow:0 14px 30px rgba(20,21,48,.18)}
.hamburger{display:none;width:40px;height:40px;border-radius:10px;flex-direction:column;justify-content:center;align-items:center;gap:6px;border:1.5px solid #DCDDF0;background:#fff}
.hamburger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:var(--ease)}
.hamburger:hover span{background:var(--brand)}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,21,48,.45);z-index:1100;
  opacity:0;visibility:hidden;transition:var(--ease);
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);background:#fff;z-index:1200;
  transform:translateX(102%);transition:transform .3s ease;display:flex;flex-direction:column;
  padding:24px;overflow-y:auto;
}
.drawer.open{transform:none}
.drawer-head{display:flex;align-items:center;gap:10px;padding-bottom:18px;border-bottom:1px solid #EEF0F6;margin-bottom:8px}
.drawer-head b{font-size:15px;color:var(--ink)}
.d-link{display:block;padding:16px 4px;border-bottom:1px solid #EEF0F6;font-size:15px;color:var(--ink);font-weight:500}
.d-link:hover,.d-link.active{color:var(--brand)}
.d-link.active{font-weight:700}
.drawer-foot{margin-top:auto;padding-top:24px}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#EEF0FF 0%,#E6FAF7 100%);
  padding:56px 0 52px;min-height:280px;display:flex;align-items:center;
}
.page-hero::before{
  content:"";position:absolute;right:-90px;top:-140px;width:420px;height:420px;border-radius:50%;
  background:var(--grad);filter:blur(80px);opacity:.18;pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--muted);margin-bottom:18px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#C3C5D8}
.pill{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  background:#fff;border:1px solid #E0DEFB;color:var(--brand);font-size:13px;font-weight:600;
}
.pill .dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
.page-hero h1{font-size:44px;letter-spacing:-.5px;line-height:1.22;margin:16px 0 14px;max-width:860px}
.page-hero .sub{font-size:18px;color:var(--text);max-width:660px;margin:0}

/* ---------- badges ---------- */
.badge-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.badge-card{
  background:#fff;border:1px solid var(--card-line);border-radius:24px;padding:26px 24px;
  box-shadow:var(--sh-s);transition:var(--ease);
}
.badge-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:#DCD9FB}
.badge-card .num{
  font-family:var(--font-num);font-size:44px;font-weight:800;letter-spacing:-1px;line-height:1;
  color:var(--brand);display:flex;align-items:baseline;gap:6px;
}
.badge-card .num em{font-style:normal;font-size:15px;font-weight:700;color:var(--muted);letter-spacing:0}
.badge-card .split{display:flex;align-items:center;gap:8px;margin-bottom:12px}
.badge-card .split .spot{width:8px;height:8px;border-radius:50%;background:var(--accent);flex:none}
.badge-card .split span{font-size:13px;color:var(--muted);letter-spacing:.6px}
.badge-card .txt{font-size:14px;line-height:1.75;color:var(--text);margin-top:12px;padding-top:12px;border-top:1px solid #F1F2FA}

/* ---------- long cards ---------- */
.longcards{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.longcard{
  position:relative;background:#fff;border:1px solid var(--card-line);border-radius:22px;
  padding:30px;box-shadow:var(--sh-s);transition:var(--ease);overflow:hidden;
}
.longcard::after{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--grad);
  opacity:0;transition:var(--ease);
}
.longcard:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:#DCD9FB}
.longcard:hover::after{opacity:1}
.longcard .idx{font-family:var(--font-num);font-size:14px;font-weight:800;letter-spacing:1.5px;color:var(--accent)}
.longcard h3{font-size:20px;margin:10px 0 10px}
.longcard .desc{font-size:14.5px;color:var(--muted);line-height:1.8;margin-bottom:18px}
.dot-list li{position:relative;padding-left:22px;font-size:14.5px;line-height:1.8;color:var(--text);margin-bottom:10px}
.dot-list li:last-child{margin-bottom:0}
.dot-list li::before{
  content:"";position:absolute;left:0;top:8px;width:8px;height:8px;border-radius:50%;
  background:var(--brand-soft);border:2px solid var(--brand);
}

/* ---------- compare ---------- */
.compare-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:32px;align-items:start}
.table-wrap{background:#fff;border:1px solid var(--card-line);border-radius:22px;overflow:hidden;box-shadow:var(--sh-s)}
.compare{font-size:14.5px}
.compare th{
  background:var(--bg);text-align:left;font-weight:600;color:var(--ink);font-size:14px;
  padding:15px 22px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.compare td{padding:18px 22px;border-bottom:1px solid #EFEFF6;color:var(--text);vertical-align:top;line-height:1.8}
.compare tr:last-child td{border-bottom:0}
.compare td:first-child{color:var(--ink);font-weight:600}
.tag{
  display:inline-block;font-size:12px;font-weight:600;padding:3px 11px;border-radius:999px;
  background:var(--teal-soft);color:#0E9E92;white-space:nowrap;
}
.tag.warn{background:#FFF1E9;color:#D9612A}
.tag.brand{background:var(--brand-soft);color:var(--brand)}
.media-card{
  background:#fff;border:1px solid var(--card-line);border-radius:22px;padding:18px;
  box-shadow:var(--sh-s);
}
.media-card img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:16px;background:var(--brand-soft)}
.media-card .cap{font-size:13px;color:var(--muted);margin-top:14px;line-height:1.7}
.media-card .cap b{display:block;color:var(--ink);font-size:15px;margin-bottom:6px;font-weight:600}

/* ---------- contact strip ---------- */
.contact-strip{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  background:linear-gradient(135deg,#EEF0FF 0%,#E4FAF6 100%);
  border-radius:28px;padding:40px 44px;
}
.contact-strip h2{font-size:26px;margin-bottom:10px}
.contact-strip p{margin:0;font-size:15px;color:var(--text);max-width:640px}

/* ---------- faq ---------- */
.faq-item{
  background:#fff;border:1px solid var(--card-line);border-radius:16px;margin-bottom:12px;
  box-shadow:var(--sh-s);overflow:hidden;transition:var(--ease);
}
.faq-item:hover{border-color:#DCD9FB;box-shadow:var(--sh-h)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:14px;
  padding:20px 24px;font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item .q-idx{
  font-family:var(--font-num);font-size:15px;font-weight:800;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  line-height:1.7;flex:none;
}
.faq-item .q-text{flex:1}
.faq-item .sign{position:relative;width:16px;height:16px;flex:none;margin-top:6px}
.faq-item .sign::before,.faq-item .sign::after{
  content:"";position:absolute;background:#9EA1B8;border-radius:2px;transition:var(--ease);
}
.faq-item .sign::before{left:0;top:7px;width:16px;height:1.5px}
.faq-item .sign::after{left:7px;top:0;width:1.5px;height:16px}
.faq-item[open] .sign::after{transform:rotate(90deg);opacity:0}
.faq-item[open] .sign::before{background:var(--brand)}
.faq-item .answer{
  margin:0 24px;padding:18px 0 22px;border-top:1px solid #EFEFF6;
  font-size:15px;line-height:1.9;color:var(--text);
}

/* ---------- cta ---------- */
.cta-banner{
  background:var(--grad);border-radius:28px;padding:56px;
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
  box-shadow:0 24px 60px rgba(91,75,232,.24);
}
.cta-banner h2{color:#fff;font-size:34px;margin-bottom:12px;max-width:620px;line-height:1.3}
.cta-banner p{color:rgba(255,255,255,.88);margin:0;font-size:16px;max-width:580px}

/* ---------- footer ---------- */
.site-footer{background:linear-gradient(180deg,#141530 0%,#1E1B45 100%);color:#B9BCD4;padding:72px 0 32px;margin-top:88px}
.f-cols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:0}
.f-col{padding:0 28px}
.f-col:first-child{padding-left:0}
.f-col:last-child{padding-right:0}
.f-col + .f-col{border-left:1px solid rgba(255,255,255,.08)}
.f-col h4{color:#fff;font-size:16px;margin-bottom:18px;font-weight:600}
.f-col p{font-size:14px;line-height:1.85;color:#B9BCD4;margin-bottom:10px}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.f-brand .brand-mark{box-shadow:0 8px 20px rgba(91,75,232,.4)}
.f-brand .brand-text b{color:#fff}
.f-brand .brand-text span{color:#8B8FAB}
.f-link{display:block;font-size:14px;color:#B9BCD4;padding:6px 0;transition:var(--ease)}
.f-link:hover{color:var(--teal);transform:translateX(2px)}
.f-bottom{
  border-top:1px solid rgba(255,255,255,.08);margin-top:48px;padding-top:24px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8B8FAB;
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .section{padding:72px 0}
  .page-hero h1{font-size:38px}
}
@media (max-width:992px){
  .menu{display:none}
  .header-actions .icon-btn,.header-actions .header-cta{display:none}
  .hamburger{display:flex}
  .header-inner{height:60px}
  .badge-row{grid-template-columns:repeat(2,1fr)}
  .longcards{grid-template-columns:1fr}
  .compare-grid{grid-template-columns:1fr}
  .page-hero{padding:44px 0 40px;min-height:220px}
  .page-hero h1{font-size:32px}
  .sec-head h2{font-size:28px}
  .cta-banner{padding:40px;border-radius:24px}
  .cta-banner h2{font-size:26px}
  .f-cols{grid-template-columns:repeat(2,1fr);gap:32px 0}
  .f-col:nth-child(2n+1){padding-left:0;border-left:0}
  .f-col:nth-child(2n){padding-right:0}
  .f-col{border-left:1px solid rgba(255,255,255,.08)}
  .f-col:nth-child(odd){border-left:0}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .page-hero h1{font-size:30px;margin:14px 0 12px}
  .page-hero .sub{font-size:16px}
  .sec-head h2{font-size:24px;padding-left:14px}
  .sec-head .lead{font-size:15px}
  .badge-row{gap:16px}
  .badge-card{padding:22px 20px;border-radius:20px}
  .badge-card .num{font-size:36px}
  .longcard{padding:24px 20px}
  .compare th,.compare td{padding:14px 16px}
  .contact-strip{padding:28px 22px;border-radius:22px}
  .contact-strip h2{font-size:22px}
  .faq-item summary{padding:18px 18px;font-size:16px}
  .faq-item .answer{margin:0 18px;font-size:14.5px}
  .cta-banner{padding:32px 24px;border-radius:22px}
  .cta-banner h2{font-size:23px}
  .btn-white,.cta-banner .btn-white{width:100%}
  .site-footer{padding:56px 0 28px;margin-top:56px}
}
@media (max-width:576px){
  .badge-row{grid-template-columns:1fr}
  .f-cols{grid-template-columns:1fr;gap:28px}
  .f-col,.f-col:first-child,.f-col:last-child{padding:0;border-left:0}
  .f-col + .f-col{border-top:1px solid rgba(255,255,255,.08);padding-top:24px}
  .f-bottom{flex-direction:column;gap:10px}
  .btn-grad,.btn-ghost{width:100%}
  .contact-strip .btn-ghost{width:100%}
}

/* roulang page: category3 */
:root{
  --brand:#5B4BE8;
  --brand-deep:#3F32C4;
  --brand-l:#EEF0FF;
  --mint:#12C4B4;
  --mint-l:#E4FAF6;
  --coral:#FF7A45;
  --bg:#F6F7FC;
  --bg-alt:#F1F2FA;
  --ink:#16172B;
  --text:#4A4C63;
  --muted:#7C8098;
  --line:#E7E8F0;
  --card-line:#EDEEF6;
  --grad:linear-gradient(135deg,#5B4BE8 0%,#12C4B4 100%);
  --r-sm:10px;
  --r-md:12px;
  --r-lg:18px;
  --r-xl:24px;
  --sh-card:0 8px 24px rgba(22,23,43,.06);
  --sh-hover:0 16px 40px rgba(91,75,232,.14);
  --ease:.28s ease;
  --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --num:"DIN Alternate","Barlow","SF Mono",-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--brand-deep);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;}
h1{font-size:44px;line-height:1.22;letter-spacing:-.5px;}
h2{font-size:34px;line-height:1.3;}
h3{font-size:22px;font-weight:600;line-height:1.4;}
h4{font-size:18px;font-weight:600;line-height:1.5;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.section{padding:88px 0;}
.section-white{background:#fff;}
.section-alt{background:var(--bg-alt);}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(246,247,252,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  height:72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:32px;height:32px;border-radius:10px;
  background:var(--grad);
  color:#fff;font-family:var(--num);font-weight:800;font-size:16px;
  display:grid;place-items:center;flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.08;font-size:14px;font-weight:700;color:var(--ink);}
.brand-text span{font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.5px;}
.menu{display:flex;align-items:center;gap:32px;}
.menu a{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--text);
  padding:8px 0;
  white-space:nowrap;
}
.menu a::after{
  content:"";
  position:absolute;left:0;bottom:2px;
  width:0;height:2px;border-radius:2px;
  background:var(--grad);
  transition:width var(--ease);
}
.menu a::before{
  content:"";position:absolute;left:50%;top:-2px;
  width:6px;height:6px;border-radius:50%;
  background:var(--coral);
  transform:translateX(-50%) scale(0);
  transition:transform var(--ease);
}
.menu a:hover{color:var(--brand);}
.menu a:hover::after{width:100%;}
.menu a.active{color:var(--ink);font-weight:600;}
.menu a.active::after{width:100%;}
.menu a.active::before{transform:translateX(-50%) scale(1);}
.header-actions{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);
  background:#fff;
  color:var(--text);
  display:grid;place-items:center;
  transition:all var(--ease);
  cursor:pointer;
}
.icon-btn:hover{border-color:#D9D6FA;color:var(--brand);transform:translateY(-1px);}
.icon-btn svg{width:20px;height:20px;stroke-width:1.5;}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 24px;border-radius:999px;border:0;
  background:var(--grad);color:#fff;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:all var(--ease);
  box-shadow:0 8px 20px rgba(91,75,232,.22);
}
.btn-main:hover{color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(91,75,232,.30);}
.btn-main:active{transform:translateY(0);}
.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 24px;border-radius:999px;
  border:1px solid #D9D6FA;background:#fff;color:var(--brand);
  font-size:15px;font-weight:600;cursor:pointer;
  transition:all var(--ease);
}
.btn-line:hover{border-color:var(--brand);color:var(--brand-deep);transform:translateY(-2px);}
.btn-white{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 30px;border-radius:999px;border:0;
  background:#fff;color:var(--brand);
  font-size:15px;font-weight:700;cursor:pointer;
  transition:all var(--ease);
}
.btn-white:hover{transform:translateY(-2px);color:var(--brand-deep);box-shadow:0 12px 26px rgba(20,21,48,.20);}
.nav-toggle{
  display:none;
  width:40px;height:40px;border:0;background:transparent;
  flex-direction:column;justify-content:center;gap:6px;
  cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--ink);border-radius:2px;transition:all var(--ease);}
.drawer{
  position:fixed;top:0;right:0;z-index:1002;
  width:300px;max-width:86vw;height:100%;
  background:#fff;
  transform:translateX(102%);
  transition:transform var(--ease);
  padding:24px 0 0;
  display:flex;flex-direction:column;
  box-shadow:-16px 0 40px rgba(20,21,48,.12);
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:0 22px 16px;border-bottom:1px solid #EEF0F6;}
.drawer-nav{display:flex;flex-direction:column;padding:8px 0;flex:1;}
.drawer-nav a{
  padding:0 22px;height:56px;display:flex;align-items:center;
  font-size:16px;color:var(--text);border-bottom:1px solid #EEF0F6;
}
.drawer-nav a.active{color:var(--brand);font-weight:600;background:var(--brand-l);}
.drawer-foot{padding:16px 22px 28px;}
.drawer-foot .btn-main{width:100%;}
.drawer-mask{
  position:fixed;inset:0;z-index:1001;
  background:rgba(20,21,48,.45);
  opacity:0;visibility:hidden;transition:all var(--ease);
}
.drawer-mask.show{opacity:1;visibility:visible;}

/* ---------- Hero ---------- */
.hero-cat{
  position:relative;
  overflow:hidden;
  background:linear-gradient(135deg,#EEF0FF 0%,#E6FAF7 100%);
  padding:36px 0 64px;
  min-height:280px;
}
.hero-cat::after{
  content:"";
  position:absolute;right:-60px;top:-120px;
  width:420px;height:420px;border-radius:50%;
  background:var(--grad);
  filter:blur(80px);
  opacity:.18;
  pointer-events:none;
}
.hero-cat .container{position:relative;z-index:1;}
.crumbs{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--muted);flex-wrap:wrap;min-height:56px;}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--brand);}
.crumbs em{font-style:normal;color:var(--text);}
.crumbs span{color:#C7C9D9;}
.hero-body{max-width:760px;margin-top:8px;}
.cat-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 16px;border-radius:999px;
  background:#fff;color:var(--brand);
  font-size:13px;font-weight:600;
  border:1px solid #E2E0FB;
}
.cat-pill::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--coral);}
.hero-body h1{margin:18px 0 14px;}
.hero-body .hero-sub{font-size:18px;color:var(--text);max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}

/* ---------- Section head ---------- */
.sec-head{max-width:720px;margin-bottom:32px;}
.sec-eyebrow{
  display:inline-block;
  font-family:var(--num);
  font-size:12px;font-weight:700;letter-spacing:1.5px;
  text-transform:uppercase;
  color:var(--mint);
  margin-bottom:10px;
}
.sec-head h2{position:relative;padding-left:16px;}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;
  width:3px;border-radius:3px;background:var(--grad);
}
.sec-sub{margin-top:12px;font-size:16px;color:var(--muted);}

/* ---------- Split 8/4 ---------- */
.split{display:grid;grid-template-columns:2fr 1fr;gap:24px;align-items:start;}
.step-list{position:relative;padding-left:34px;margin-top:8px;}
.step-list::before{
  content:"";position:absolute;left:6px;top:10px;bottom:14px;
  width:2px;background:linear-gradient(180deg,#5B4BE8 0%,#12C4B4 100%);
  border-radius:2px;
}
.step{position:relative;padding-bottom:32px;}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:-34px;top:5px;
  width:14px;height:14px;border-radius:50%;
  background:#fff;border:3px solid var(--brand);
}
.step-num{
  font-family:var(--num);font-size:13px;font-weight:800;
  color:var(--coral);letter-spacing:1px;display:block;margin-bottom:4px;
}
.step h3{font-size:20px;margin-bottom:8px;}
.step p{font-size:14px;line-height:1.8;}
.step-meta{margin-top:10px;display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:500;
  background:var(--brand-l);color:var(--brand-deep);
}
.tag-mint{background:var(--mint-l);color:#0E9C90;}

.side-card{
  position:sticky;top:96px;
  background:#fff;border:1px solid var(--card-line);
  border-radius:20px;overflow:hidden;
  box-shadow:var(--sh-card);
  transition:all var(--ease);
}
.side-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:#DCD9FB;}
.side-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.side-body{padding:24px 22px 26px;}
.badge-soft{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--mint-l);color:#0E9C90;
  font-size:13px;font-weight:600;
}
.badge-soft::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--coral);}
.side-body h3{font-size:18px;margin:14px 0 10px;}
.side-body p{font-size:14px;line-height:1.8;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:16px;font-size:14px;font-weight:600;color:var(--brand);
}
.link-arrow:hover{gap:10px;color:var(--brand-deep);}

/* ---------- 问题分类入口 ---------- */
.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.topic-card{
  background:#fff;border:1px solid var(--card-line);
  border-radius:18px;overflow:hidden;
  box-shadow:var(--sh-card);
  transition:all var(--ease);
  display:flex;flex-direction:column;
}
.topic-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:#DCD9FB;}
.topic-card:hover h3{color:var(--brand);}
.topic-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.topic-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.topic-body h3{font-size:17px;margin-bottom:10px;transition:color var(--ease);}
.topic-body p{font-size:14px;line-height:1.8;color:var(--text);}
.topic-foot{
  margin-top:18px;padding-top:14px;border-top:1px solid #EFEFF6;
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.topic-foot .num{font-family:var(--num);font-weight:700;color:var(--coral);}
.topic-foot .arrow{color:var(--brand);transition:transform var(--ease);}
.topic-card:hover .arrow{transform:translateX(4px);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-item{
  background:#fff;border-radius:16px;border:1px solid var(--card-line);
  margin-bottom:12px;overflow:hidden;
  box-shadow:0 4px 16px rgba(22,23,43,.04);
  transition:box-shadow var(--ease),border-color var(--ease);
}
.faq-item:hover{border-color:#DCD9FB;}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;
  background:transparent;border:0;
  padding:20px 24px;text-align:left;cursor:pointer;
}
.faq-num{
  font-family:var(--num);font-size:14px;font-weight:800;
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  flex-shrink:0;
}
.faq-text{flex:1;font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;}
.faq-icon{position:relative;width:18px;height:18px;flex-shrink:0;transition:transform var(--ease);}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
}
.faq-icon::before{left:0;top:8px;width:18px;height:1.5px;}
.faq-icon::after{top:0;left:8px;height:18px;width:1.5px;transition:opacity var(--ease);}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .34s ease;
  border-top:1px solid transparent;
}
.faq-item.open .faq-a{border-top-color:#EFEFF6;}
.faq-a-inner{padding:16px 24px 22px 60px;font-size:15px;line-height:1.9;color:var(--text);}
.faq-more{text-align:center;margin-top:28px;}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:32px;align-items:start;}
.contact-list{margin-top:26px;}
.contact-row{
  display:flex;align-items:flex-start;gap:14px;
  padding:16px 0;border-bottom:1px solid #E7E8F0;
}
.contact-row:first-child{border-top:1px solid #E7E8F0;}
.contact-ico{
  width:40px;height:40px;border-radius:12px;flex-shrink:0;
  background:var(--brand-l);color:var(--brand);
  display:grid;place-items:center;
}
.contact-ico.mint{background:var(--mint-l);color:#0E9C90;}
.contact-ico svg{width:20px;height:20px;stroke-width:1.5;}
.contact-row b{display:block;font-size:15px;color:var(--ink);font-weight:600;}
.contact-row span{font-size:14px;color:var(--muted);}
.form-card{
  background:#fff;border:1px solid var(--card-line);
  border-radius:20px;padding:32px;
  box-shadow:var(--sh-card);
}
.form-field{margin-bottom:20px;}
.form-field label{display:block;font-size:14px;font-weight:500;color:var(--ink);margin-bottom:8px;}
.form-field label .req{color:var(--coral);margin-left:4px;}
.form-field input,
.form-field textarea{
  width:100%;
  border:1px solid #E2E3EE;
  border-radius:12px;
  padding:0 14px;
  font-size:15px;font-family:inherit;color:var(--ink);
  background:#fff;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.form-field input{height:48px;}
.form-field textarea{min-height:120px;padding:12px 14px;resize:vertical;line-height:1.7;}
.form-field input:focus,
.form-field textarea:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(91,75,232,.14);
}
.form-field input::placeholder,
.form-field textarea::placeholder{color:#A9ACC0;}
.form-note{font-size:13px;color:var(--muted);margin-top:14px;}
.form-alert{
  display:none;margin-top:16px;padding:12px 16px;
  border-radius:12px;background:var(--mint-l);
  color:#0E9C90;font-size:14px;
}
.form-alert.show{display:block;}

/* ---------- CTA ---------- */
.cta-banner{
  background:var(--grad);
  border-radius:28px;
  padding:56px;
  display:grid;grid-template-columns:8fr 4fr;gap:32px;
  align-items:center;
  color:#fff;
}
.cta-banner h2{color:#fff;font-size:32px;}
.cta-banner p{color:rgba(255,255,255,.86);margin-top:12px;font-size:16px;max-width:560px;}
.cta-right{display:flex;justify-content:flex-end;}

/* ---------- Footer ---------- */
.site-footer{
  background:linear-gradient(180deg,#141530 0%,#1E1B45 100%);
  padding:72px 0 32px;
  margin-top:88px;
  color:#B9BCD4;
}
.f-cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:0;}
.f-col{padding:0 26px;border-left:1px solid rgba(255,255,255,.08);}
.f-col:first-child{border-left:0;padding-left:0;}
.f-col:last-child{padding-right:0;}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.f-brand .brand-mark{width:32px;height:32px;}
.f-brand .brand-text b{color:#fff;font-size:14px;}
.f-brand .brand-text span{color:#9A9DC0;}
.f-col p{font-size:14px;line-height:1.8;margin-bottom:10px;color:#B9BCD4;}
.f-col h4{color:#fff;font-size:15px;margin-bottom:18px;}
.f-link{
  display:block;font-size:14px;color:#B9BCD4;
  margin-bottom:12px;transition:all var(--ease);
}
.f-link:hover{color:var(--mint);transform:translateX(2px);}
.f-bottom{
  margin-top:48px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8E91B4;
}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease;}
.reveal.in{opacity:1;transform:translateY(0);}

/* ---------- Responsive ---------- */
@media (max-width:1200px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
}
@media (max-width:992px){
  .menu{display:none;}
  .header-actions .btn-main{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{height:60px;}
  h1{font-size:32px;}
  h2{font-size:26px;}
  .hero-cat{min-height:auto;padding:20px 0 56px;}
  .split,
  .contact-grid{grid-template-columns:1fr;}
  .side-card{position:static;}
  .topic-grid{grid-template-columns:repeat(2,1fr);}
  .cta-banner{grid-template-columns:1fr;padding:40px 32px;}
  .cta-right{justify-content:flex-start;}
  .f-cols{grid-template-columns:1fr 1fr;}
  .f-col{padding:0 0 28px;border-left:0;border-bottom:1px solid rgba(255,255,255,.08);margin-bottom:28px;}
  .f-col:nth-child(2n){padding-left:24px;}
  .f-col:nth-child(odd){padding-right:24px;}
  .f-col:last-child,.f-col:nth-last-child(2){border-bottom:0;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  h1{font-size:30px;}
  h2{font-size:24px;}
  .hero-body h1{font-size:28px;}
  .hero-body .hero-sub{font-size:16px;}
  .hero-actions .btn-main,
  .hero-actions .btn-line{width:100%;}
  .topic-grid{grid-template-columns:1fr;}
  .faq-q{padding:16px 18px;gap:10px;}
  .faq-text{font-size:16px;}
  .faq-a-inner{padding:14px 18px 20px 42px;}
  .form-card{padding:22px;}
  .cta-banner{padding:32px 22px;border-radius:22px;}
  .cta-banner h2{font-size:24px;}
  .site-footer{padding:56px 0 28px;margin-top:56px;}
  .f-cols{grid-template-columns:1fr;}
  .f-col{padding:0 0 24px;margin-bottom:24px;}
  .f-col:nth-child(2n),.f-col:nth-child(odd){padding-left:0;padding-right:0;}
  .f-col:last-child{padding-bottom:0;margin-bottom:0;border-bottom:0;}
}
@media (max-width:576px){
  .btn-main,.btn-line,.btn-white{width:100%;}
  .topic-body{padding:18px;}
  .side-body{padding:20px 18px 22px;}
}