/* roulang page: index */
:root{
  --ink:#0f172a;
  --ink-2:#3d4b66;
  --ink-3:#6a7894;
  --bg:#f5f7fc;
  --bg-alt:#eef2fb;
  --surface:#ffffff;
  --brand:#3b5bdb;
  --brand-2:#6d8bff;
  --brand-deep:#22307a;
  --accent:#0ea47a;
  --gold:#f2a516;
  --line:#e3e8f4;
  --line-2:#d3dbee;
  --radius:14px;
  --radius-lg:22px;
  --shadow-sm:0 2px 10px rgba(20,36,80,.05);
  --shadow:0 14px 34px rgba(20,36,80,.09);
  --shadow-lg:0 26px 60px rgba(20,36,80,.16);
  --grad:linear-gradient(135deg,#3b5bdb 0%,#6d8bff 46%,#0ea47a 100%);
  --grad-soft:linear-gradient(135deg,rgba(59,91,219,.12),rgba(14,164,122,.12));
  --container:1180px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:15.5px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-radius:12px;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,transform .2s ease,box-shadow .2s ease;}
a:hover{color:var(--brand-deep);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.32;letter-spacing:-.01em;color:var(--ink);}
p{margin:0;}
button{font:inherit;}
:focus-visible{outline:3px solid rgba(59,91,219,.42);outline-offset:3px;border-radius:6px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 22px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:0 10px 26px rgba(20,36,80,.1);}
.nav-wrap{
  max-width:var(--container);margin:0 auto;padding:0 22px;
  min-height:64px;display:flex;align-items:center;gap:18px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:36px;height:36px;border-radius:11px;background:var(--grad);
  color:#fff;font-weight:700;font-size:17px;display:grid;place-items:center;
  box-shadow:0 6px 16px rgba(59,91,219,.32);letter-spacing:0;
}
.brand-text{font-size:17.5px;font-weight:700;letter-spacing:.2px;white-space:nowrap;}
.chip-nav{
  flex:1 1 auto;display:flex;align-items:center;gap:8px;
  overflow-x:auto;padding:10px 2px;scrollbar-width:none;-ms-overflow-style:none;
}
.chip-nav::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;display:inline-block;padding:7px 15px;border-radius:999px;
  font-size:14.5px;font-weight:500;color:var(--ink-2);
  background:#f1f4fc;border:1px solid transparent;white-space:nowrap;
  transition:all .2s ease;
}
.chip:hover{background:#e5ebfb;color:var(--brand-deep);transform:translateY(-1px);}
.chip.is-active{background:var(--grad);color:#fff;box-shadow:0 8px 18px rgba(59,91,219,.28);}
.chip.is-active:hover{color:#fff;}
.nav-cta{
  flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
  padding:9px 20px;border-radius:10px;background:var(--brand);color:#fff;
  font-size:14.5px;font-weight:600;box-shadow:0 8px 20px rgba(59,91,219,.3);
  transition:all .2s ease;min-height:40px;
}
.nav-cta:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(34,48,122,.32);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:10px;font-size:15px;font-weight:600;
  border:1.5px solid transparent;cursor:pointer;min-height:44px;
  transition:all .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px rgba(59,91,219,.3);}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(34,48,122,.34);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand-deep);border-color:var(--line-2);box-shadow:var(--shadow-sm);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow);}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:58px 0 66px;
  background:
    radial-gradient(900px 460px at 12% -10%,rgba(109,139,255,.20),transparent 62%),
    radial-gradient(760px 420px at 96% 8%,rgba(14,164,122,.16),transparent 60%),
    #f7f9ff;
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(59,91,219,.28),transparent);
}
.hero-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center;position:relative;z-index:2;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;
  background:#fff;border:1px solid var(--line-2);color:var(--brand-deep);
  font-size:13.5px;font-weight:600;box-shadow:var(--shadow-sm);
}
.hero-badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);}
.hero h1{
  margin-top:20px;
  font-size:clamp(30px,3.4vw,42px);
  line-height:1.26;
  letter-spacing:-.02em;
}
.hero h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-lead{margin-top:18px;font-size:15.5px;line-height:1.85;color:var(--ink-2);max-width:640px;}
.hero-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:14px;}
.hero-kpi{margin-top:30px;display:flex;flex-wrap:wrap;gap:12px;}
.kpi-pill{
  display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:11px;
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm);
  font-size:13.5px;color:var(--ink-2);
}
.kpi-pill b{font-size:16px;color:var(--brand-deep);font-weight:700;}
.hero-visual{position:relative;}
.hero-visual::before{
  content:"";position:absolute;inset:-22px 46px 34px -22px;
  background:var(--grad);opacity:.16;border-radius:34px;transform:rotate(3.5deg);
}
.hero-frame{
  position:relative;z-index:2;border-radius:26px;overflow:hidden;
  border:6px solid #fff;box-shadow:var(--shadow-lg);transform:rotate(-2deg);
  background:#fff;
}
.hero-frame img{width:100%;aspect-ratio:7/5;object-fit:cover;border-radius:20px;}
.hero-float{
  position:absolute;z-index:3;right:-8px;bottom:-18px;
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:14px 18px;box-shadow:var(--shadow);min-width:190px;
}
.hero-float span{display:block;font-size:12.5px;color:var(--ink-3);}
.hero-float strong{display:block;font-size:20px;color:var(--ink);margin-top:2px;letter-spacing:-.01em;}

/* ---------- Sections ---------- */
.section{padding:66px 0;}
.section--tint{background:var(--bg-alt);}
.section--white{background:#fff;}
.section-head{max-width:760px;margin-bottom:34px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand);
  text-transform:uppercase;
}
.eyebrow::before{content:"";width:26px;height:3px;border-radius:3px;background:var(--grad);}
.section-head.center .eyebrow::after{content:"";width:26px;height:3px;border-radius:3px;background:var(--grad);}
.section-title{margin-top:14px;font-size:clamp(23px,2.5vw,30px);line-height:1.34;}
.section-desc{margin-top:14px;font-size:15px;color:var(--ink-2);line-height:1.82;}

/* ---------- Pain strip ---------- */
.pain{padding:48px 0;background:#fff;border-bottom:1px solid var(--line);}
.pain-lead{font-size:clamp(18px,2vw,22px);font-weight:700;line-height:1.5;color:var(--ink);max-width:900px;}
.pain-lead span{background:linear-gradient(180deg,transparent 62%,rgba(242,165,22,.45) 62%);}
.pain-note{margin-top:12px;color:var(--ink-2);font-size:15px;max-width:900px;}
.pain-list{margin-top:26px;display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.pain-item{
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 20px;display:flex;gap:12px;align-items:flex-start;
}
.pain-item i{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:var(--grad-soft);
  color:var(--brand);display:grid;place-items:center;font-style:normal;font-weight:700;font-size:13px;
}
.pain-item b{display:block;font-size:14.5px;color:var(--ink);margin-bottom:2px;}
.pain-item p{font-size:13.5px;color:var(--ink-3);line-height:1.65;}

/* ---------- Cards ---------- */
.g-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);padding:24px;height:100%;
  display:flex;flex-direction:column;gap:12px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.g-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#c9d5f3;}
.card-icon{
  width:44px;height:44px;border-radius:13px;background:var(--grad-soft);
  display:grid;place-items:center;color:var(--brand);flex:0 0 auto;
}
.card-icon svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.g-card h3{font-size:17px;line-height:1.45;}
.g-card p{font-size:14px;color:var(--ink-2);line-height:1.75;}
.card-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:auto;padding-top:6px;}
.tag{
  display:inline-block;padding:4px 11px;border-radius:999px;font-size:12.5px;
  background:#f1f4fc;color:var(--brand-deep);border:1px solid var(--line);
}
.tag--accent{background:rgba(14,164,122,.1);color:#0b7d5d;border-color:rgba(14,164,122,.2);}

/* ---------- Demo block ---------- */
.demo-grid{display:grid;grid-template-columns:5fr 6fr;gap:44px;align-items:center;}
.demo-figure{position:relative;}
.demo-figure img{width:100%;aspect-ratio:5/4;object-fit:cover;border-radius:var(--radius-lg);box-shadow:var(--shadow);}
.demo-badge{
  position:absolute;left:18px;bottom:18px;background:rgba(15,23,42,.82);color:#fff;
  padding:9px 15px;border-radius:11px;font-size:13px;backdrop-filter:blur(6px);
}
.demo-list{display:flex;flex-direction:column;gap:16px;margin-top:6px;}
.demo-item{
  display:flex;gap:14px;padding:18px 20px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.demo-item:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#c9d5f3;}
.demo-item .num{
  flex:0 0 auto;width:32px;height:32px;border-radius:10px;background:var(--brand);
  color:#fff;font-weight:700;font-size:14px;display:grid;place-items:center;
}
.demo-item h4{font-size:15.5px;margin-bottom:4px;}
.demo-item p{font-size:13.8px;color:var(--ink-2);line-height:1.7;}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.step-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px 24px 24px;box-shadow:var(--shadow-sm);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#c9d5f3;}
.step-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad);opacity:.85;
}
.step-no{
  font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--brand);
}
.step-card h3{margin-top:10px;font-size:18px;}
.step-card p{margin-top:10px;font-size:14px;color:var(--ink-2);line-height:1.75;}

/* ---------- Channel matrix ---------- */
.channels{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.channel{
  display:flex;flex-direction:column;gap:10px;padding:24px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);color:var(--ink);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,background .2s ease;
}
.channel:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--brand);color:var(--ink);}
.channel .card-icon{width:40px;height:40px;border-radius:12px;}
.channel h3{font-size:16px;}
.channel p{font-size:13.5px;color:var(--ink-3);line-height:1.66;}
.channel span.more{font-size:13px;font-weight:600;color:var(--brand);margin-top:auto;}

/* ---------- Post cards ---------- */
.post-card{gap:10px;padding:22px;}
.post-card .post-thumb{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:10px;margin-bottom:4px;
}
.post-card h3{font-size:16px;line-height:1.5;}
.post-card h3 a{color:var(--ink);}
.post-card h3 a:hover{color:var(--brand);}
.post-card p{font-size:13.8px;color:var(--ink-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--ink-3);margin-top:auto;padding-top:8px;}
.post-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line-2);}
.empty-tip{
  padding:34px;border:1px dashed var(--line-2);border-radius:var(--radius);
  text-align:center;color:var(--ink-3);font-size:14.5px;background:#fff;
}

/* ---------- Feed layout ---------- */
.feed-grid{display:grid;grid-template-columns:8fr 4fr;gap:34px;align-items:start;}
.feed-list{display:flex;flex-direction:column;gap:14px;}
.feed-item{
  display:flex;gap:16px;padding:20px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.feed-item:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#c9d5f3;}
.feed-item .feed-body{flex:1 1 auto;min-width:0;}
.feed-item h3{font-size:16px;line-height:1.5;}
.feed-item h3 a{color:var(--ink);}
.feed-item h3 a:hover{color:var(--brand);}
.feed-item p{margin-top:7px;font-size:13.8px;color:var(--ink-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.feed-item .post-meta{margin-top:10px;padding-top:0;}
.feed-item .feed-thumb{
  flex:0 0 130px;width:130px;aspect-ratio:4/3;object-fit:cover;border-radius:10px;
}
.side-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px;box-shadow:var(--shadow-sm);
}
.side-panel h3{font-size:16px;margin-bottom:14px;}
.side-tags{display:flex;flex-wrap:wrap;gap:8px;}
.side-tags a{
  display:inline-block;padding:6px 13px;border-radius:999px;background:#f1f4fc;
  font-size:13px;color:var(--ink-2);border:1px solid transparent;
}
.side-tags a:hover{background:var(--grad);color:#fff;transform:translateY(-1px);}
.side-panel .btn{margin-top:20px;width:100%;}
.side-note{margin-top:16px;font-size:13px;color:var(--ink-3);line-height:1.7;}

/* ---------- Metrics ---------- */
.metrics-section{
  position:relative;padding:70px 0;color:#fff;overflow:hidden;
  background:linear-gradient(135deg,#1b2a63 0%,#22307a 46%,#0b7d5d 100%);
}
.metrics-section::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/麻将素材红中.webp') center/cover no-repeat;
  opacity:.14;mix-blend-mode:luminosity;
}
.metrics-section .container{position:relative;z-index:2;}
.metrics-section .eyebrow{color:#9fd8ff;}
.metrics-section .eyebrow::before{background:#9fd8ff;}
.metrics-section .section-title{color:#fff;}
.metrics-section .section-desc{color:rgba(255,255,255,.78);}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:12px;}
.metric{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);
  border-radius:var(--radius);padding:24px 22px;backdrop-filter:blur(6px);
  transition:transform .2s ease,background .2s ease;
}
.metric:hover{transform:translateY(-4px);background:rgba(255,255,255,.16);}
.metric strong{display:block;font-size:28px;letter-spacing:-.02em;color:#fff;}
.metric span{display:block;margin-top:6px;font-size:13.5px;color:rgba(255,255,255,.78);line-height:1.6;}

/* ---------- Trust ---------- */
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.trust-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.trust-item:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#c9d5f3;}
.trust-item h4{margin-top:12px;font-size:15.5px;}
.trust-item p{margin-top:8px;font-size:13.6px;color:var(--ink-2);line-height:1.7;}

/* ---------- Voices ---------- */
.voices{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.voice{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:14px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.voice:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.voice .quote{font-size:14.5px;color:var(--ink-2);line-height:1.8;}
.voice .who{display:flex;align-items:center;gap:12px;margin-top:auto;}
.avatar{
  width:40px;height:40px;border-radius:50%;background:var(--grad);color:#fff;
  display:grid;place-items:center;font-size:15px;font-weight:700;flex:0 0 auto;
}
.who b{display:block;font-size:14px;color:var(--ink);}
.who span{display:block;font-size:12.5px;color:var(--ink-3);}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:#c9d5f3;box-shadow:var(--shadow);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:19px 24px;font-size:15.5px;font-weight:600;
  color:var(--ink);display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";font-size:20px;font-weight:400;color:var(--brand);
  transition:transform .2s ease;flex:0 0 auto;line-height:1;
}
.faq-item[open] summary::after{content:"–";}
.faq-item .answer{padding:0 24px 22px;font-size:14.2px;color:var(--ink-2);line-height:1.82;}

/* ---------- Contact ---------- */
.contact-section{
  position:relative;padding:70px 0;overflow:hidden;
  background:linear-gradient(135deg,#22307a 0%,#3b5bdb 58%,#0ea47a 100%);
}
.contact-section::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/斗牛棋牌.webp') center/cover no-repeat;
  opacity:.16;
}
.contact-section .container{position:relative;z-index:2;}
.contact-grid{display:grid;grid-template-columns:5fr 6fr;gap:44px;align-items:center;}
.contact-copy h2{color:#fff;font-size:clamp(23px,2.6vw,30px);line-height:1.36;}
.contact-copy p{margin-top:16px;color:rgba(255,255,255,.82);font-size:15px;line-height:1.85;}
.contact-points{margin-top:22px;display:flex;flex-direction:column;gap:11px;}
.contact-points li{
  display:flex;gap:10px;align-items:flex-start;color:rgba(255,255,255,.9);font-size:14px;
}
.contact-points li::before{
  content:"✓";flex:0 0 auto;width:20px;height:20px;border-radius:50%;
  background:rgba(255,255,255,.18);color:#fff;font-size:12px;
  display:grid;place-items:center;margin-top:2px;
}
.contact-card{
  background:#fff;border-radius:var(--radius-lg);padding:30px;
  box-shadow:var(--shadow-lg);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px;}
.field label{font-size:13.5px;font-weight:600;color:var(--ink-2);}
.field input,.field select,.field textarea{
  width:100%;padding:11px 14px;border:1px solid var(--line-2);border-radius:10px;
  font-size:14.5px;color:var(--ink);background:#fbfcff;min-height:44px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
  font-family:inherit;
}
.field textarea{min-height:104px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:#fff;
  box-shadow:0 0 0 4px rgba(59,91,219,.12);
}
.form-hint{margin-top:12px;font-size:12.8px;color:var(--ink-3);line-height:1.65;}
.form-msg{margin-top:12px;font-size:13.5px;color:#0b7d5d;font-weight:600;display:none;}
.form-msg.show{display:block;}

/* ---------- Footer ---------- */
.site-footer{background:#0d1530;color:rgba(255,255,255,.72);padding:56px 0 26px;border-top:1px solid rgba(255,255,255,.08);}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:36px;}
.site-footer .brand-text{color:#fff;}
.site-footer .brand:hover{color:#fff;}
.footer-about{margin-top:16px;font-size:13.8px;line-height:1.8;color:rgba(255,255,255,.6);max-width:340px;}
.site-footer h4{font-size:14.5px;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:13.8px;color:rgba(255,255,255,.68);}
.footer-links a:hover{color:#fff;}
.footer-copy{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.6);}
.footer-copy strong{color:#fff;font-weight:600;}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.8px;color:rgba(255,255,255,.45);
}

/* ---------- Foundation overrides ---------- */
.grid-x.grid-margin-x{margin-left:-11px;margin-right:-11px;}
.grid-x.grid-margin-x > .cell{padding-left:11px;padding-right:11px;}
.grid-x.grid-margin-y > .cell{margin-bottom:22px;}

/* ---------- Responsive ---------- */
@media screen and (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:46px;}
  .hero-visual{max-width:640px;}
  .hero-lead{max-width:none;}
  .demo-grid{grid-template-columns:1fr;gap:30px;}
  .channels{grid-template-columns:repeat(2,1fr);}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .trust-grid{grid-template-columns:repeat(2,1fr);}
  .voices{grid-template-columns:1fr;}
  .feed-grid{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .pain-list{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
}
@media screen and (max-width:768px){
  .nav-wrap{flex-wrap:wrap;padding:10px 18px;gap:10px;min-height:auto;}
  .chip-nav{order:3;width:100%;flex:1 0 100%;padding:4px 0 8px;}
  .nav-cta{margin-left:auto;padding:8px 16px;font-size:13.5px;}
  .container{padding:0 18px;}
  .section{padding:52px 0;}
  .hero{padding:40px 0 56px;}
  .hero-float{right:6px;bottom:-14px;padding:12px 15px;min-width:160px;}
  .hero-float strong{font-size:17px;}
  .contact-card{padding:22px;}
  .form-row{grid-template-columns:1fr;}
  .feed-item .feed-thumb{flex:0 0 92px;width:92px;}
}
@media screen and (max-width:520px){
  body{font-size:15px;}
  .brand-text{font-size:15.5px;}
  .brand-mark{width:32px;height:32px;border-radius:10px;font-size:15px;}
  .channels{grid-template-columns:1fr;}
  .metrics{grid-template-columns:1fr;}
  .trust-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .hero-actions .btn{width:100%;}
  .feed-item{flex-direction:column;}
  .feed-item .feed-thumb{width:100%;flex:0 0 auto;aspect-ratio:16/9;}
  .hero-frame{border-width:4px;}
  .hero-visual::before{display:none;}
  .hero-float{position:static;margin-top:14px;right:auto;bottom:auto;width:100%;}
}

/* roulang page: category1 */
:root{
 --ink:#0f172a;
 --ink-2:#3d4b66;
 --ink-3:#6a7894;
 --bg:#f5f7fc;
 --bg-alt:#eef2fb;
 --surface:#ffffff;
 --brand:#3b5bdb;
 --brand-2:#6d8bff;
 --brand-deep:#22307a;
 --accent:#0ea47a;
 --gold:#f2a516;
 --line:#e3e8f4;
 --line-2:#d3dbee;
 --radius:14px;
 --radius-lg:22px;
 --shadow-sm:0 2px 10px rgba(20,36,80,.05);
 --shadow:0 14px 34px rgba(20,36,80,.09);
 --shadow-lg:0 26px 60px rgba(20,36,80,.16);
 --grad:linear-gradient(135deg,#3b5bdb 0%,#6d8bff 46%,#0ea47a 100%);
 --grad-soft:linear-gradient(135deg,rgba(59,91,219,.12),rgba(14,164,122,.12));
 --container:1180px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
 font-size:15.5px;
 line-height:1.75;
 color:var(--ink);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
 text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-radius:12px;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
a:hover{color:var(--brand-deep);}
button,input{font:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.32;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 22px;}

/* ---------- Header ---------- */
.site-header{
 position:sticky;top:0;z-index:60;
 background:rgba(255,255,255,.94);
 backdrop-filter:blur(14px);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:0 10px 26px rgba(20,36,80,.1);}
.nav-wrap{
 max-width:var(--container);margin:0 auto;padding:0 22px;
 min-height:64px;display:flex;align-items:center;gap:18px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{
 width:36px;height:36px;border-radius:11px;background:var(--grad);
 color:#fff;font-weight:700;font-size:17px;display:grid;place-items:center;
 box-shadow:0 6px 16px rgba(59,91,219,.32);
}
.brand-text{font-size:17.5px;font-weight:700;letter-spacing:.2px;white-space:nowrap;}
.chip-nav{
 flex:1 1 auto;display:flex;align-items:center;gap:8px;
 overflow-x:auto;padding:10px 2px;scrollbar-width:none;-ms-overflow-style:none;
}
.chip-nav::-webkit-scrollbar{display:none;}
.chip{
 flex:0 0 auto;display:inline-block;padding:7px 15px;border-radius:999px;
 font-size:14.5px;font-weight:500;color:var(--ink-2);
 background:#f1f4fc;border:1px solid transparent;white-space:nowrap;
 transition:all .2s ease;
}
.chip:hover{background:#e5ebfb;color:var(--brand-deep);transform:translateY(-1px);}
.chip.is-active{background:var(--grad);color:#fff;box-shadow:0 8px 18px rgba(59,91,219,.28);}
.chip.is-active:hover{color:#fff;}
.nav-cta{
 flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
 padding:9px 20px;border-radius:10px;background:var(--brand);color:#fff;
 font-size:14.5px;font-weight:600;box-shadow:0 8px 20px rgba(59,91,219,.3);
 transition:all .2s ease;min-height:40px;
}
.nav-cta:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(34,48,122,.32);}

/* ---------- Buttons ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:12px 26px;border-radius:10px;font-size:15px;font-weight:600;
 border:1.5px solid transparent;cursor:pointer;min-height:46px;
 transition:all .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px rgba(59,91,219,.3);}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(34,48,122,.34);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand-deep);border-color:var(--line-2);box-shadow:var(--shadow-sm);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow);}

/* ---------- Hero ---------- */
.hero-download{
 position:relative;overflow:hidden;
 padding:56px 0 68px;
 background:
 radial-gradient(900px 460px at 10% -12%,rgba(109,139,255,.20),transparent 62%),
 radial-gradient(760px 420px at 96% 6%,rgba(14,164,122,.16),transparent 60%),
 #f7f9ff;
 border-bottom:1px solid var(--line);
}
.hero-cards{
 display:grid;grid-template-columns:5fr 7fr;gap:52px;align-items:center;
 position:relative;z-index:2;
}
.hero-badge{
 display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;
 background:#fff;border:1px solid var(--line-2);color:var(--brand-deep);
 font-size:13.5px;font-weight:600;box-shadow:var(--shadow-sm);
}
.hero-badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);}
.hero-download h1{
 margin-top:20px;
 font-size:clamp(30px,3.4vw,42px);
 line-height:1.24;
 letter-spacing:-.02em;
}
.hero-download h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-lead{margin-top:18px;font-size:15.5px;line-height:1.85;color:var(--ink-2);max-width:600px;}
.hero-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:14px;}
.hero-tags{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px;}
.tag-pill{
 display:inline-flex;align-items:center;gap:7px;
 padding:8px 15px;border-radius:999px;background:#fff;border:1px solid var(--line);
 font-size:13.5px;color:var(--ink-2);box-shadow:var(--shadow-sm);
}
.tag-pill::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-2);}
.hero-stack{position:relative;display:grid;gap:16px;}
.hero-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
 box-shadow:var(--shadow);overflow:hidden;transition:transform .22s ease,box-shadow .22s ease;
}
.hero-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.hero-card-main{padding:0;border-width:1px;}
.hero-card-main img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;}
.hero-card-body{padding:20px 24px 24px;}
.hero-card-body h2{font-size:19px;margin-bottom:8px;}
.hero-card-body p{font-size:14.5px;color:var(--ink-2);line-height:1.8;}
.badge-strong{
 display:inline-flex;align-items:center;gap:6px;
 padding:5px 12px;border-radius:999px;background:var(--grad);color:#fff;
 font-size:12.5px;font-weight:600;margin-bottom:12px;
}
.hero-mini-list{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px;}
.hero-mini-list li{
 font-size:12.8px;color:var(--brand-deep);background:var(--grad-soft);
 padding:5px 11px;border-radius:8px;font-weight:500;
}
.hero-side{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.hero-card-small{padding:18px 18px 20px;border-radius:var(--radius);}
.hero-card-small h3{font-size:14.5px;margin-bottom:6px;}
.hero-card-small p{font-size:13.2px;color:var(--ink-3);line-height:1.7;}
.hero-card-small .mini-num{
 display:block;font-size:24px;font-weight:700;letter-spacing:-.02em;
 background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
 margin-bottom:4px;
}
.hero-side .hero-card-small:nth-child(2){transform:translateY(20px);}
.hero-side .hero-card-small:nth-child(2):hover{transform:translateY(16px);}

/* ---------- Section ---------- */
.section{padding:64px 0;}
.section-alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:740px;margin-bottom:38px;}
.eyebrow{
 display:inline-flex;align-items:center;gap:9px;
 font-size:12.6px;font-weight:700;color:var(--brand);letter-spacing:.1em;
}
.eyebrow::before{content:"";width:24px;height:2px;border-radius:2px;background:var(--grad);}
.section-title{font-size:clamp(22px,2.4vw,29px);margin:12px 0 12px;letter-spacing:-.015em;}
.section-desc{color:var(--ink-2);font-size:15px;}

/* ---------- Stats board ---------- */
.stat-board{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.stat-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:24px 22px;box-shadow:var(--shadow-sm);
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--line-2);}
.stat-value{
 font-size:30px;font-weight:700;letter-spacing:-.03em;line-height:1.1;
 background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-label{display:block;margin-top:10px;font-size:14.5px;font-weight:600;color:var(--ink);}
.stat-note{display:block;margin-top:6px;font-size:13px;color:var(--ink-3);line-height:1.7;}

/* ---------- Cards grid ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.info-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:24px 22px;box-shadow:var(--shadow-sm);
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
 display:flex;flex-direction:column;
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--line-2);}
.icon-box{
 width:44px;height:44px;border-radius:13px;background:var(--grad-soft);
 display:grid;place-items:center;color:var(--brand-deep);margin-bottom:16px;
}
.icon-box svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.card-title{font-size:16.5px;margin-bottom:10px;}
.card-text{font-size:14.2px;color:var(--ink-2);line-height:1.8;}
.card-tags{margin-top:16px;display:flex;flex-wrap:wrap;gap:7px;}
.mini-tag{
 font-size:12.2px;color:var(--ink-2);background:#f1f4fc;
 border:1px solid var(--line);padding:4px 10px;border-radius:7px;
}

/* ---------- Compare ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.compare-col{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
 padding:28px 26px;box-shadow:var(--shadow-sm);
}
.compare-col.after{border-color:rgba(14,164,122,.35);background:linear-gradient(180deg,rgba(14,164,122,.05),#fff 42%);}
.compare-col h3{
 font-size:17px;display:flex;align-items:center;gap:10px;margin-bottom:18px;
}
.dot-mark{width:10px;height:10px;border-radius:50%;background:var(--line-2);display:inline-block;}
.compare-col.after .dot-mark{background:var(--accent);}
.compare-list li{
 display:flex;gap:11px;padding:11px 0;font-size:14.3px;color:var(--ink-2);
 border-bottom:1px dashed var(--line);
}
.compare-list li:last-child{border-bottom:0;padding-bottom:0;}
.check{
 flex:0 0 auto;width:20px;height:20px;border-radius:50%;
 background:var(--grad-soft);color:var(--brand-deep);
 display:grid;place-items:center;font-size:12px;font-weight:700;margin-top:2px;
}
.compare-col.after .check{background:rgba(14,164,122,.14);color:var(--accent);}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;position:relative;}
.step{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:22px 18px;box-shadow:var(--shadow-sm);position:relative;
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--brand-2);}
.step-num{
 display:inline-grid;place-items:center;width:32px;height:32px;border-radius:10px;
 background:var(--grad);color:#fff;font-size:14px;font-weight:700;margin-bottom:14px;
 box-shadow:0 6px 16px rgba(59,91,219,.28);
}
.step h3{font-size:14.8px;margin-bottom:8px;}
.step p{font-size:13.4px;color:var(--ink-3);line-height:1.75;}

/* ---------- Channel matrix ---------- */
.channel-card{
 display:flex;align-items:flex-start;gap:16px;
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
 padding:26px 24px;box-shadow:var(--shadow-sm);
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease,background-color .22s ease;
}
.channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--brand-2);}
.channel-card .icon-box{margin-bottom:0;flex:0 0 auto;}
.channel-card h3{font-size:16px;margin-bottom:7px;}
.channel-card p{font-size:13.8px;color:var(--ink-2);line-height:1.75;}
.channel-card .card-tags{margin-top:12px;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px;}
.faq-item{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:var(--brand-2);box-shadow:var(--shadow);}
.faq-item summary{
 cursor:pointer;list-style:none;padding:18px 52px 18px 22px;position:relative;
 font-size:15.2px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
 content:"";position:absolute;right:22px;top:50%;width:10px;height:10px;
 border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);
 transform:translateY(-70%) rotate(45deg);transition:transform .22s ease;
}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(-135deg);}
.faq-item .faq-body{padding:0 22px 20px;font-size:14.3px;color:var(--ink-2);line-height:1.85;}

/* ---------- CTA band ---------- */
.cta-section{padding:64px 0;}
.cta-band{
 background:var(--grad);border-radius:var(--radius-lg);padding:46px 44px;color:#fff;
 display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;
 box-shadow:var(--shadow-lg);position:relative;overflow:hidden;
}
.cta-band::after{
 content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;
 border-radius:50%;background:rgba(255,255,255,.12);
}
.cta-band h2{font-size:clamp(21px,2.3vw,27px);color:#fff;margin-bottom:12px;position:relative;z-index:2;}
.cta-band p{font-size:14.6px;color:rgba(255,255,255,.9);line-height:1.8;position:relative;z-index:2;}
.cta-form{position:relative;z-index:2;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);border-radius:var(--radius);padding:22px;}
.cta-form label{display:block;font-size:13.4px;font-weight:600;color:#fff;margin-bottom:8px;}
.cta-form input[type="text"]{
 width:100%;padding:12px 15px;border-radius:10px;border:1px solid rgba(255,255,255,.42);
 background:#fff;color:var(--ink);font-size:14.5px;min-height:46px;margin-bottom:14px;
}
.cta-form input[type="text"]::placeholder{color:var(--ink-3);}
.cta-form input[type="text"]:focus{outline:2px solid #fff;outline-offset:2px;}
.cta-form .btn-form{
 width:100%;background:#fff;color:var(--brand-deep);border:0;border-radius:10px;
 padding:13px 20px;font-size:15px;font-weight:700;min-height:46px;cursor:pointer;
 transition:all .2s ease;box-shadow:0 10px 22px rgba(15,23,42,.18);
}
.cta-form .btn-form:hover{transform:translateY(-2px);box-shadow:0 14px 28px rgba(15,23,42,.24);color:var(--brand);}
.form-note{display:block;margin-top:12px;font-size:12.6px;color:rgba(255,255,255,.82);line-height:1.7;}

/* ---------- Footer ---------- */
.site-footer{
 background:#0f172a;color:#c3cce0;padding:56px 0 26px;margin-top:0;
 border-top:1px solid rgba(255,255,255,.06);
}
.site-footer .brand{color:#fff;margin-bottom:16px;}
.site-footer .brand:hover{color:#fff;}
.site-footer .brand-text{color:#fff;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.footer-about{font-size:13.8px;line-height:1.85;color:#9aa8c4;max-width:320px;}
.site-footer h4{font-size:14.5px;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:#9aa8c4;font-size:13.8px;transition:color .2s ease,padding-left .2s ease;}
.footer-links a:hover{color:#fff;padding-left:4px;}
.footer-copy{font-size:13.6px;line-height:1.85;color:#9aa8c4;}
.footer-copy strong{color:#fff;}
.footer-bottom{
 margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.09);
 display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
 font-size:13px;color:#8794b0;
}

/* ---------- Responsive ---------- */
@media screen and (max-width:1024px){
 .hero-cards{grid-template-columns:1fr;gap:38px;}
 .hero-lead{max-width:100%;}
 .stat-board{grid-template-columns:repeat(2,1fr);}
 .grid-4{grid-template-columns:repeat(2,1fr);}
 .grid-3{grid-template-columns:repeat(2,1fr);}
 .steps{grid-template-columns:repeat(3,1fr);}
 .cta-band{grid-template-columns:1fr;gap:28px;padding:38px 30px;}
 .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media screen and (max-width:768px){
 .nav-wrap{flex-wrap:wrap;gap:10px;padding-top:10px;padding-bottom:8px;}
 .chip-nav{order:3;flex:1 1 100%;padding:6px 0 4px;}
 .nav-cta{margin-left:auto;}
 .hero-download{padding:40px 0 52px;}
 .hero-side{grid-template-columns:1fr;}
 .hero-side .hero-card-small:nth-child(2){transform:none;}
 .hero-side .hero-card-small:nth-child(2):hover{transform:translateY(-4px);}
 .section,.cta-section{padding:48px 0;}
 .grid-4,.grid-3,.grid-2,.compare-grid{grid-template-columns:1fr;}
 .steps{grid-template-columns:1fr 1fr;}
 .stat-board{grid-template-columns:1fr 1fr;}
 .footer-grid{grid-template-columns:1fr;}
 .footer-bottom{flex-direction:column;gap:8px;}
}
@media screen and (max-width:520px){
 .brand-text{font-size:16px;}
 .nav-cta{padding:8px 15px;font-size:13.6px;}
 .chip{font-size:13.6px;padding:6px 13px;}
 .stat-board{grid-template-columns:1fr;}
 .steps{grid-template-columns:1fr;}
 .hero-actions .btn{width:100%;}
 .cta-band{padding:30px 20px;}
 .cta-form{padding:18px;}
 .section-desc{font-size:14.2px;}
}

/* roulang page: article */
:root{
 --ink:#0f172a;
 --ink-2:#3d4b66;
 --ink-3:#6a7894;
 --bg:#f5f7fc;
 --bg-alt:#eef2fb;
 --surface:#ffffff;
 --brand:#3b5bdb;
 --brand-2:#6d8bff;
 --brand-deep:#22307a;
 --accent:#0ea47a;
 --gold:#f2a516;
 --line:#e3e8f4;
 --line-2:#d3dbee;
 --radius:14px;
 --radius-lg:22px;
 --shadow-sm:0 2px 10px rgba(20,36,80,.05);
 --shadow:0 14px 34px rgba(20,36,80,.09);
 --shadow-lg:0 26px 60px rgba(20,36,80,.16);
 --grad:linear-gradient(135deg,#3b5bdb 0%,#6d8bff 46%,#0ea47a 100%);
 --grad-soft:linear-gradient(135deg,rgba(59,91,219,.12),rgba(14,164,122,.12));
 --container:1180px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
 font-size:15.5px;
 line-height:1.75;
 color:var(--ink);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
 text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-radius:12px;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
a:hover{color:var(--brand-deep);}
button,input,select{font:inherit;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 22px;}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em;}
p{margin:0;}
/* ---------- Header ---------- */
.site-header{
 position:sticky;top:0;z-index:60;
 background:rgba(255,255,255,.94);
 backdrop-filter:blur(14px);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:0 10px 26px rgba(20,36,80,.1);}
.nav-wrap{
 max-width:var(--container);margin:0 auto;padding:0 22px;
 min-height:64px;display:flex;align-items:center;gap:18px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{
 width:36px;height:36px;border-radius:11px;background:var(--grad);
 color:#fff;font-weight:700;font-size:17px;display:grid;place-items:center;
 box-shadow:0 6px 16px rgba(59,91,219,.32);letter-spacing:0;
}
.brand-text{font-size:17.5px;font-weight:700;letter-spacing:.2px;white-space:nowrap;}
.chip-nav{
 flex:1 1 auto;display:flex;align-items:center;gap:8px;
 overflow-x:auto;padding:10px 2px;scrollbar-width:none;-ms-overflow-style:none;
}
.chip-nav::-webkit-scrollbar{display:none;}
.chip{
 flex:0 0 auto;display:inline-block;padding:7px 15px;border-radius:999px;
 font-size:14.5px;font-weight:500;color:var(--ink-2);
 background:#f1f4fc;border:1px solid transparent;white-space:nowrap;
 transition:all .2s ease;
}
.chip:hover{background:#e5ebfb;color:var(--brand-deep);transform:translateY(-1px);}
.chip.is-active{background:var(--grad);color:#fff;box-shadow:0 8px 18px rgba(59,91,219,.28);}
.chip.is-active:hover{color:#fff;}
.nav-cta{
 flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
 padding:9px 20px;border-radius:10px;background:var(--brand);color:#fff;
 font-size:14.5px;font-weight:600;box-shadow:0 8px 20px rgba(59,91,219,.3);
 transition:all .2s ease;min-height:40px;
}
.nav-cta:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(34,48,122,.32);}
/* ---------- Buttons ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:12px 26px;border-radius:10px;font-size:15px;font-weight:600;
 border:1.5px solid transparent;cursor:pointer;min-height:44px;
 transition:all .2s ease;text-align:center;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px rgba(59,91,219,.3);}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(34,48,122,.34);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand-deep);border-color:var(--line-2);box-shadow:var(--shadow-sm);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow);}
.btn-light{background:#fff;color:var(--brand-deep);box-shadow:0 10px 26px rgba(10,18,48,.24);}
.btn-light:hover{background:#f4f7ff;color:var(--brand-deep);transform:translateY(-2px);}
.btn:focus-visible,.chip:focus-visible,.nav-cta:focus-visible,a:focus-visible{
 outline:3px solid rgba(59,91,219,.45);outline-offset:3px;border-radius:10px;
}
/* ---------- Article hero ---------- */
.article-hero{
 position:relative;overflow:hidden;
 padding:42px 0 50px;
 background:
 radial-gradient(820px 400px at 8% -20%,rgba(109,139,255,.20),transparent 62%),
 radial-gradient(680px 360px at 96% 4%,rgba(14,164,122,.15),transparent 60%),
 #f7f9ff;
 border-bottom:1px solid var(--line);
}
.article-hero::after{
 content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
 background:linear-gradient(90deg,transparent,rgba(59,91,219,.28),transparent);
}
.crumbs{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--ink-3);position:relative;z-index:2;}
.crumbs a{color:var(--ink-3);}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:var(--line-2);}
.crumb-current{color:var(--brand-deep);font-weight:600;}
.post-tag{
 display:inline-flex;align-items:center;gap:8px;margin-top:20px;padding:7px 16px;border-radius:999px;
 background:#fff;border:1px solid var(--line-2);color:var(--brand-deep);
 font-size:13.5px;font-weight:600;box-shadow:var(--shadow-sm);position:relative;z-index:2;
}
.post-tag::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);}
.article-title{
 margin-top:16px;font-size:clamp(26px,3.1vw,38px);line-height:1.32;letter-spacing:-.02em;
 max-width:940px;position:relative;z-index:2;
}
.post-meta{
 margin-top:18px;display:flex;flex-wrap:wrap;gap:8px 20px;
 font-size:13.5px;color:var(--ink-3);position:relative;z-index:2;
}
.post-meta b{color:var(--ink-2);font-weight:600;}
.article-cover{
 margin-top:28px;border-radius:24px;overflow:hidden;background:#fff;
 border:6px solid #fff;box-shadow:var(--shadow);position:relative;z-index:2;
}
.article-cover img{width:100%;aspect-ratio:16/7;object-fit:cover;border-radius:18px;}
/* ---------- Sections ---------- */
.section{padding:62px 0;}
.section-alt{background:var(--bg-alt);}
.section-white{background:#fff;}
.section-head{max-width:780px;margin-bottom:32px;}
.section-eyebrow{
 display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:600;
 color:var(--brand);letter-spacing:.08em;
}
.section-eyebrow::before{content:"";width:24px;height:3px;border-radius:3px;background:var(--grad);}
.section-title{font-size:clamp(21px,2.2vw,28px);margin:12px 0 10px;line-height:1.35;}
.section-sub{font-size:14.5px;line-height:1.85;color:var(--ink-3);}
/* ---------- Post layout ---------- */
.post-layout{display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:32px;align-items:start;}
.post-main{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
 padding:34px 38px;box-shadow:var(--shadow-sm);
}
.post-body{font-size:16px;line-height:1.85;color:var(--ink-2);word-break:break-word;}
.post-body > *:first-child{margin-top:0;}
.post-body h2{
 margin:38px 0 16px;font-size:22px;line-height:1.42;position:relative;padding-left:16px;color:var(--ink);
}
.post-body h2::before{
 content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:4px;border-radius:4px;background:var(--grad);
}
.post-body h3{margin:28px 0 12px;font-size:18px;line-height:1.5;color:var(--ink);}
.post-body h4{margin:22px 0 10px;font-size:16px;color:var(--brand-deep);}
.post-body p{margin:0 0 16px;}
.post-body ul,.post-body ol{margin:0 0 18px;padding-left:22px;}
.post-body li{margin:0 0 8px;}
.post-body li::marker{color:var(--brand);}
.post-body strong{color:var(--ink);font-weight:700;}
.post-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.post-body a:hover{color:var(--brand-deep);}
.post-body blockquote{
 margin:22px 0;padding:16px 22px;border-left:4px solid var(--brand);
 background:var(--grad-soft);border-radius:0 12px 12px 0;color:var(--ink-2);
}
.post-body blockquote p:last-child{margin-bottom:0;}
.post-body img{margin:20px 0;border-radius:14px;box-shadow:var(--shadow-sm);width:100%;height:auto;}
.post-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14.5px;background:#fff;}
.post-body th,.post-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;}
.post-body th{background:var(--bg-alt);color:var(--ink);font-weight:600;}
.post-body hr{border:0;border-top:1px dashed var(--line-2);margin:28px 0;}
.post-empty{text-align:center;padding:36px 12px 30px;}
.post-empty h2{font-size:22px;margin-bottom:12px;}
.post-empty p{color:var(--ink-3);font-size:15px;line-height:1.85;margin-bottom:22px;}
/* ---------- Sidebar ---------- */
.post-side{position:sticky;top:84px;display:grid;gap:18px;}
.side-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:20px 22px;box-shadow:var(--shadow-sm);
}
.side-card h3{
 margin:0 0 14px;font-size:15.5px;display:flex;align-items:center;gap:9px;color:var(--ink);
}
.side-card h3::before{content:"";width:4px;height:15px;border-radius:3px;background:var(--grad);}
.side-list{list-style:none;margin:0;padding:0;display:grid;gap:11px;}
.side-list li{
 display:flex;justify-content:space-between;align-items:center;gap:12px;
 font-size:13.5px;color:var(--ink-3);padding-bottom:10px;border-bottom:1px dashed var(--line);
}
.side-list li:last-child{border-bottom:0;padding-bottom:0;}
.side-list b{color:var(--ink);font-weight:600;font-size:14px;}
.side-tip{background:var(--grad-soft);border-color:rgba(59,91,219,.2);}
.side-tip p{font-size:13.5px;line-height:1.85;color:var(--ink-2);}
.side-tip .tag{margin-top:12px;}
.tag{
 display:inline-flex;align-items:center;padding:4px 11px;border-radius:999px;
 font-size:12.5px;font-weight:600;background:#eef2fb;color:var(--brand-deep);
}
.tag-accent{background:rgba(14,164,122,.12);color:#0a7a5b;}
/* ---------- Stat board ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.stat-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:22px 22px 20px;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--line-2);}
.stat-num{
 font-size:30px;font-weight:800;line-height:1.2;letter-spacing:-.02em;
 background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-label{margin-top:8px;font-size:14.5px;font-weight:600;color:var(--ink);}
.stat-desc{margin-top:6px;font-size:13px;line-height:1.75;color:var(--ink-3);}
/* ---------- Cards ---------- */
.card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:24px 22px;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--line-2);}
.card-icon{
 width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
 background:var(--grad-soft);color:var(--brand);margin-bottom:15px;
}
.card-icon svg{width:22px;height:22px;}
.card h3{font-size:16px;margin-bottom:9px;line-height:1.5;}
.card p{font-size:14px;line-height:1.78;color:var(--ink-3);}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
/* ---------- Compare ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.compare-card{
 border-radius:var(--radius-lg);padding:28px 30px;background:var(--surface);
 border:1px solid var(--line);box-shadow:var(--shadow-sm);
}
.compare-card h3{font-size:18px;margin-bottom:8px;}
.compare-card .compare-note{font-size:13.5px;color:var(--ink-3);margin-bottom:16px;line-height:1.8;}
.compare-list{list-style:none;margin:0;padding:0;display:grid;gap:11px;}
.compare-list li{display:flex;gap:10px;font-size:14px;line-height:1.75;color:var(--ink-2);}
.compare-list li::before{
 content:"";flex:0 0 auto;width:8px;height:8px;border-radius:50%;
 background:var(--accent);margin-top:8px;
}
.compare-card.is-strong{
 background:linear-gradient(160deg,#22307a 0%,#3b5bdb 68%,#3f6ee0 100%);
 border-color:transparent;box-shadow:var(--shadow);
}
.compare-card.is-strong h3,.compare-card.is-strong .compare-list li{color:#fff;}
.compare-card.is-strong .compare-note{color:rgba(255,255,255,.78);}
.compare-card.is-strong .compare-list li::before{background:#8bf0c6;}
/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:16px;}
.step{
 position:relative;background:var(--surface);border:1px solid var(--line);
 border-radius:var(--radius);padding:30px 22px 22px;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--line-2);}
.step-num{
 position:absolute;top:-16px;left:22px;width:36px;height:36px;border-radius:12px;
 background:var(--grad);color:#fff;display:grid;place-items:center;
 font-weight:700;font-size:15px;box-shadow:0 8px 18px rgba(59,91,219,.3);
}
.step h3{font-size:16px;margin:6px 0 9px;}
.step p{font-size:14px;line-height:1.78;color:var(--ink-3);}
/* ---------- News list ---------- */
.news-list{display:grid;gap:14px;}
.news-item{
 display:grid;grid-template-columns:140px minmax(0,1fr);gap:18px;align-items:center;
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:14px;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--line-2);}
.news-item img{width:100%;height:92px;object-fit:cover;border-radius:10px;}
.news-item h3{font-size:15.5px;line-height:1.5;margin-bottom:7px;}
.news-item h3 a{color:var(--ink);}
.news-item h3 a:hover{color:var(--brand);}
.news-item p{
 font-size:13px;line-height:1.7;color:var(--ink-3);
 display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{margin-top:9px;font-size:12.5px;color:var(--ink-3);display:flex;gap:14px;flex-wrap:wrap;}
.more-row{margin-top:24px;display:flex;justify-content:center;}
/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px;}
.faq-item{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:var(--line-2);box-shadow:var(--shadow);}
.faq-item summary{
 list-style:none;cursor:pointer;padding:18px 22px;font-size:15.5px;font-weight:600;color:var(--ink);
 display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
 content:"+";font-size:20px;line-height:1;color:var(--brand);font-weight:400;
 transition:transform .2s ease;flex:0 0 auto;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-body{padding:0 22px 20px;font-size:14.5px;line-height:1.85;color:var(--ink-3);}
/* ---------- CTA band ---------- */
.cta-wrap{padding:20px 0 72px;}
.cta-band{
 position:relative;overflow:hidden;border-radius:26px;padding:44px 46px;
 background:linear-gradient(135deg,#22307a 0%,#3b5bdb 54%,#0ea47a 100%);
 color:#fff;box-shadow:var(--shadow-lg);
 display:grid;grid-template-columns:1.12fr .88fr;gap:38px;align-items:center;
}
.cta-band::after{
 content:"";position:absolute;width:340px;height:340px;right:-110px;top:-140px;
 background:radial-gradient(circle,rgba(255,255,255,.22),transparent 70%);border-radius:50%;
}
.cta-band h2{color:#fff;font-size:clamp(21px,2.3vw,28px);line-height:1.4;margin-bottom:12px;position:relative;z-index:2;}
.cta-band p.cta-desc{color:rgba(255,255,255,.84);font-size:14.5px;line-height:1.85;margin-bottom:22px;position:relative;z-index:2;}
.cta-points{list-style:none;margin:0 0 24px;padding:0;display:flex;flex-wrap:wrap;gap:10px 22px;position:relative;z-index:2;}
.cta-points li{font-size:13.5px;color:rgba(255,255,255,.88);display:flex;align-items:center;gap:8px;}
.cta-points li::before{content:"";width:7px;height:7px;border-radius:50%;background:#8bf0c6;}
.cta-form{
 position:relative;z-index:2;background:rgba(255,255,255,.12);
 border:1px solid rgba(255,255,255,.26);border-radius:18px;padding:22px;
 backdrop-filter:blur(6px);
}
.field{margin-bottom:12px;}
.field label{display:block;font-size:12.5px;margin-bottom:6px;color:rgba(255,255,255,.82);}
.field select,.field input{
 width:100%;padding:11px 13px;min-height:44px;border-radius:10px;
 border:1px solid rgba(255,255,255,.3);background:rgba(255,255,255,.95);
 color:var(--ink);font-size:14px;outline:none;appearance:none;
 transition:box-shadow .2s ease,border-color .2s ease;
}
.field select:focus,.field input:focus{
 box-shadow:0 0 0 3px rgba(255,255,255,.35);border-color:#fff;
}
.field-btn{width:100%;min-height:44px;padding:12px 20px;}
.form-note{font-size:12px;line-height:1.7;color:rgba(255,255,255,.72);margin-top:10px;}
/* ---------- Footer ---------- */
.site-footer{background:#0f172a;color:#c8d2e6;padding:56px 0 0;}
.site-footer .brand{color:#fff;}
.site-footer .brand:hover{color:#fff;}
.site-footer .brand-mark{box-shadow:0 6px 16px rgba(59,91,219,.4);}
.footer-grid{
 display:grid;grid-template-columns:1.45fr 1fr 1fr 1.15fr;gap:34px;
 padding-bottom:38px;border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-about{margin-top:14px;font-size:13.5px;line-height:1.85;color:#93a1bd;max-width:330px;}
.site-footer h4{color:#fff;font-size:14.5px;margin-bottom:14px;letter-spacing:.02em;}
.footer-links{list-style:none;margin:0;padding:0;display:grid;gap:9px;font-size:13.5px;}
.footer-links a{color:#93a1bd;}
.footer-links a:hover{color:#fff;}
.footer-copy{font-size:13.5px;line-height:1.85;color:#93a1bd;margin:0;}
.footer-copy strong{color:#fff;}
.footer-bottom{
 display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
 padding:18px 0 26px;font-size:12.5px;color:#77859f;
}
/* ---------- Responsive ---------- */
@media (max-width:1024px){
 .post-layout{grid-template-columns:1fr;}
 .post-side{position:static;grid-template-columns:repeat(2,1fr);}
 .stat-grid{grid-template-columns:repeat(2,1fr);}
 .grid-4{grid-template-columns:repeat(2,1fr);}
 .steps{grid-template-columns:1fr;}
 .cta-band{grid-template-columns:1fr;padding:36px 30px;}
 .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:768px){
 .nav-wrap{flex-wrap:wrap;min-height:auto;padding:10px 18px;gap:10px;}
 .chip-nav{order:3;flex-basis:100%;width:100%;padding:2px 0 8px;}
 .nav-cta{margin-left:auto;}
 .article-hero{padding:28px 0 34px;}
 .section{padding:48px 0;}
 .post-main{padding:24px 20px;}
 .post-body{font-size:15.5px;}
 .post-body h2{font-size:20px;}
 .compare{grid-template-columns:1fr;}
 .grid-2{grid-template-columns:1fr;}
 .news-item{grid-template-columns:110px minmax(0,1fr);}
 .news-item img{height:82px;}
 .post-side{grid-template-columns:1fr;}
 .cta-wrap{padding:10px 0 56px;}
}
@media (max-width:520px){
 .container{padding:0 16px;}
 .brand-text{font-size:16px;}
 .stat-grid,.grid-4{grid-template-columns:1fr;}
 .article-cover{border-width:4px;border-radius:18px;}
 .article-cover img{aspect-ratio:4/3;border-radius:14px;}
 .post-main{padding:20px 16px;border-radius:16px;}
 .cta-band{padding:26px 20px;border-radius:20px;}
 .cta-form{padding:18px;}
 .news-item{grid-template-columns:1fr;}
 .news-item img{height:160px;}
 .footer-grid{grid-template-columns:1fr;gap:26px;}
 .footer-bottom{flex-direction:column;gap:6px;}
}

/* roulang page: category2 */
:root{
 --ink:#0f172a;
 --ink-2:#3d4b66;
 --ink-3:#6a7894;
 --bg:#f5f7fc;
 --bg-alt:#eef2fb;
 --surface:#ffffff;
 --brand:#3b5bdb;
 --brand-2:#6d8bff;
 --brand-deep:#22307a;
 --accent:#0ea47a;
 --gold:#f2a516;
 --line:#e3e8f4;
 --line-2:#d3dbee;
 --radius:14px;
 --radius-lg:22px;
 --shadow-sm:0 2px 10px rgba(20,36,80,.05);
 --shadow:0 14px 34px rgba(20,36,80,.09);
 --shadow-lg:0 26px 60px rgba(20,36,80,.16);
 --grad:linear-gradient(135deg,#3b5bdb 0%,#6d8bff 46%,#0ea47a 100%);
 --grad-soft:linear-gradient(135deg,rgba(59,91,219,.12),rgba(14,164,122,.12));
 --container:1180px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
 font-size:15.5px;
 line-height:1.75;
 color:var(--ink);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
 text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-radius:12px;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,transform .2s ease,box-shadow .2s ease;}
a:hover{color:var(--brand-deep);}
button{font:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 22px;}
/* ---------- Header ---------- */
.site-header{
 position:sticky;top:0;z-index:60;
 background:rgba(255,255,255,.94);
 backdrop-filter:blur(14px);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:0 10px 26px rgba(20,36,80,.1);}
.nav-wrap{
 max-width:var(--container);margin:0 auto;padding:0 22px;
 min-height:64px;display:flex;align-items:center;gap:18px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{
 width:36px;height:36px;border-radius:11px;background:var(--grad);
 color:#fff;font-weight:700;font-size:17px;display:grid;place-items:center;
 box-shadow:0 6px 16px rgba(59,91,219,.32);letter-spacing:0;
}
.brand-text{font-size:17.5px;font-weight:700;letter-spacing:.2px;white-space:nowrap;}
.chip-nav{
 flex:1 1 auto;display:flex;align-items:center;gap:8px;
 overflow-x:auto;padding:10px 2px;scrollbar-width:none;-ms-overflow-style:none;
}
.chip-nav::-webkit-scrollbar{display:none;}
.chip{
 flex:0 0 auto;display:inline-block;padding:7px 15px;border-radius:999px;
 font-size:14.5px;font-weight:500;color:var(--ink-2);
 background:#f1f4fc;border:1px solid transparent;white-space:nowrap;
 transition:all .2s ease;
}
.chip:hover{background:#e5ebfb;color:var(--brand-deep);transform:translateY(-1px);}
.chip.is-active{background:var(--grad);color:#fff;box-shadow:0 8px 18px rgba(59,91,219,.28);}
.chip.is-active:hover{color:#fff;}
.nav-cta{
 flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
 padding:9px 20px;border-radius:10px;background:var(--brand);color:#fff;
 font-size:14.5px;font-weight:600;box-shadow:0 8px 20px rgba(59,91,219,.3);
 transition:all .2s ease;min-height:40px;
}
.nav-cta:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(34,48,122,.32);}
/* ---------- Buttons ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:12px 26px;border-radius:10px;font-size:15px;font-weight:600;
 border:1.5px solid transparent;cursor:pointer;min-height:44px;
 transition:all .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px rgba(59,91,219,.3);}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(34,48,122,.34);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand-deep);border-color:var(--line-2);box-shadow:var(--shadow-sm);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow);}
.btn:focus-visible,.chip:focus-visible,.nav-cta:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{
 outline:3px solid rgba(109,139,255,.55);outline-offset:2px;
}
/* ---------- Hero ---------- */
.page-hero{
 position:relative;overflow:hidden;padding:54px 0 64px;
 background:
 radial-gradient(880px 440px at 8% -12%,rgba(109,139,255,.20),transparent 62%),
 radial-gradient(720px 400px at 98% 6%,rgba(14,164,122,.16),transparent 60%),
 #f7f9ff;
 border-bottom:1px solid var(--line);
}
.page-hero::after{
 content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
 background:linear-gradient(90deg,transparent,rgba(59,91,219,.28),transparent);
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;position:relative;z-index:2;}
.hero-badge{
 display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;
 background:#fff;border:1px solid var(--line-2);color:var(--brand-deep);
 font-size:13.5px;font-weight:600;box-shadow:var(--shadow-sm);
}
.hero-badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);}
.hero-title{margin-top:20px;font-size:clamp(28px,3.2vw,40px);line-height:1.3;font-weight:800;}
.hero-title em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-lead{margin-top:18px;font-size:15.5px;line-height:1.85;color:var(--ink-2);max-width:620px;}
.tag-row{margin-top:22px;display:flex;flex-wrap:wrap;gap:9px;}
.tag{
 display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;
 font-size:13px;font-weight:500;color:var(--brand-deep);
 background:rgba(59,91,219,.08);border:1px solid rgba(59,91,219,.16);
}
.hero-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:14px;}
.hero-panel{
 position:relative;background:#fff;border:1px solid var(--line);
 border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-lg);
}
.hero-panel::before{
 content:"";position:absolute;inset:16px -14px -14px 16px;border-radius:var(--radius-lg);
 background:var(--grad);opacity:.14;z-index:-1;
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px;}
.panel-head h2{font-size:15px;font-weight:700;color:var(--ink);}
.panel-pill{
 font-size:12.5px;font-weight:600;color:#fff;background:var(--accent);
 padding:4px 12px;border-radius:999px;
}
.panel-rows{display:grid;gap:10px;}
.panel-row{
 display:flex;align-items:center;justify-content:space-between;gap:12px;
 padding:11px 14px;border-radius:11px;background:#f6f8fe;border:1px solid var(--line);
 font-size:14px;
}
.panel-row span{color:var(--ink-3);}
.panel-row b{color:var(--brand-deep);font-size:15px;font-weight:700;}
.panel-figure{margin-top:16px;}
.panel-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:14px;}
/* ---------- Section ---------- */
.section{padding:66px 0;}
.section-alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:36px;}
.section-kicker{
 display:inline-flex;align-items:center;gap:10px;
 font-size:13.5px;font-weight:700;color:var(--brand);letter-spacing:.06em;
}
.section-kicker::before{content:"";width:26px;height:3px;border-radius:2px;background:var(--grad);}
.section-title{margin-top:12px;font-size:clamp(23px,2.4vw,30px);line-height:1.35;font-weight:800;}
.section-sub{margin-top:12px;color:var(--ink-2);font-size:15px;line-height:1.8;}
/* ---------- Metrics ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.metric-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:24px 22px;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--line-2);}
.metric-num{font-size:34px;font-weight:800;line-height:1.1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.metric-num small{font-size:15px;font-weight:700;margin-left:4px;}
.metric-label{margin-top:8px;font-size:14.5px;font-weight:600;color:var(--ink);}
.metric-note{margin-top:6px;font-size:13px;color:var(--ink-3);line-height:1.65;}
/* ---------- Rule matrix ---------- */
.rule-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.rule-card{
 position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:26px 24px;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rule-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(59,91,219,.35);}
.rule-icon{
 width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
 background:var(--grad-soft);border:1px solid rgba(59,91,219,.18);
 color:var(--brand-deep);font-weight:800;font-size:16px;
}
.rule-card h3{margin-top:16px;font-size:17px;font-weight:700;}
.rule-card p{margin-top:10px;font-size:14.5px;color:var(--ink-2);line-height:1.8;}
.rule-tag{
 display:inline-flex;margin-top:16px;padding:4px 11px;border-radius:999px;
 font-size:12.5px;color:var(--accent);background:rgba(14,164,122,.1);
 border:1px solid rgba(14,164,122,.22);font-weight:600;
}
/* ---------- Compare ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
.compare-col{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
 padding:28px 26px;box-shadow:var(--shadow-sm);
}
.compare-col.is-fixed{border-color:rgba(59,91,219,.28);box-shadow:0 16px 38px rgba(59,91,219,.12);}
.compare-head{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.compare-dot{width:10px;height:10px;border-radius:50%;background:#c9d3ea;}
.compare-col.is-fixed .compare-dot{background:var(--accent);}
.compare-head h3{font-size:16.5px;font-weight:700;}
.compare-item{
 display:grid;grid-template-columns:22px 1fr;gap:10px;
 padding:13px 0;border-bottom:1px dashed var(--line);
 font-size:14.5px;color:var(--ink-2);line-height:1.75;
}
.compare-item:last-child{border-bottom:0;padding-bottom:0;}
.compare-item b{color:var(--ink);font-weight:700;}
.compare-mark{color:var(--ink-3);font-weight:800;}
.compare-col.is-fixed .compare-mark{color:var(--accent);}
/* ---------- Timeline ---------- */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;position:relative;}
.step{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:24px 22px;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.step-num{
 width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
 font-size:14px;font-weight:800;color:#fff;background:var(--grad);
 box-shadow:0 8px 18px rgba(59,91,219,.26);
}
.step h3{margin-top:14px;font-size:16px;font-weight:700;}
.step p{margin-top:8px;font-size:14px;color:var(--ink-2);line-height:1.75;}
.step small{display:block;margin-top:12px;font-size:12.5px;color:var(--ink-3);}
/* ---------- News ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.news-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 overflow:hidden;display:flex;flex-direction:column;
 box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--line-2);}
.news-thumb{display:block;}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:9px;flex:1;}
.news-body .tag{align-self:flex-start;margin:0;}
.news-body h3{font-size:16px;font-weight:700;line-height:1.55;}
.news-body h3 a{color:var(--ink);}
.news-body h3 a:hover{color:var(--brand);}
.news-body p{font-size:14px;color:var(--ink-2);line-height:1.75;}
.news-meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--ink-3);padding-top:10px;border-top:1px solid var(--line);}
.empty-note{
 padding:26px;border-radius:var(--radius);background:#fff;border:1px dashed var(--line-2);
 color:var(--ink-3);text-align:center;font-size:14.5px;
}
/* ---------- Guard / Quick ---------- */
.guard-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.guard-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:24px 22px;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease;
}
.guard-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.guard-card h3{margin-top:14px;font-size:16px;font-weight:700;}
.guard-card p{margin-top:8px;font-size:14px;color:var(--ink-2);line-height:1.75;}
.badge-dot{
 display:inline-flex;align-items:center;gap:7px;
 font-size:12.5px;font-weight:700;color:var(--brand-deep);
 background:rgba(59,91,219,.08);border:1px solid rgba(59,91,219,.16);
 padding:4px 11px;border-radius:999px;
}
.badge-dot i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;}
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:26px;}
.quick-card{
 background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand);
 border-radius:12px;padding:22px 22px;box-shadow:var(--shadow-sm);
}
.quick-card h3{font-size:15.5px;font-weight:700;}
.quick-card p{margin-top:8px;font-size:14px;color:var(--ink-2);line-height:1.78;}
/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px;}
.faq-item{
 background:#fff;border:1px solid var(--line);border-radius:12px;
 box-shadow:var(--shadow-sm);overflow:hidden;
 transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:rgba(59,91,219,.3);box-shadow:var(--shadow);}
.faq-item summary{
 cursor:pointer;padding:18px 22px;font-size:15.5px;font-weight:600;color:var(--ink);
 display:flex;align-items:center;justify-content:space-between;gap:14px;list-style:none;
 min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
 content:"+";font-size:20px;font-weight:700;color:var(--brand);line-height:1;
 transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"−";}
.faq-item .faq-body{padding:0 22px 20px;font-size:14.5px;color:var(--ink-2);line-height:1.85;}
/* ---------- CTA / Form ---------- */
.cta-band{
 position:relative;overflow:hidden;border-radius:var(--radius-lg);
 background:linear-gradient(135deg,#22307a 0%,#3b5bdb 58%,#0ea47a 100%);
 padding:44px 44px;color:#fff;box-shadow:var(--shadow-lg);
 display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;
}
.cta-band::before{
 content:"";position:absolute;width:320px;height:320px;border-radius:50%;
 right:-90px;top:-120px;background:rgba(255,255,255,.1);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.3vw,28px);line-height:1.4;font-weight:800;}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.86);font-size:14.8px;line-height:1.85;}
.cta-points{margin-top:18px;display:grid;gap:8px;font-size:14px;color:rgba(255,255,255,.9);}
.cta-points li{display:flex;gap:9px;align-items:flex-start;}
.cta-points li::before{content:"";width:7px;height:7px;margin-top:9px;border-radius:50%;background:#8ff0cc;flex:0 0 auto;}
.lead-form{
 position:relative;z-index:2;background:#fff;border-radius:16px;padding:26px 24px;
 box-shadow:0 22px 48px rgba(10,20,60,.24);
}
.lead-form h3{font-size:17px;font-weight:700;color:var(--ink);}
.lead-form p.form-hint{margin-top:6px;font-size:13px;color:var(--ink-3);}
.field{margin-top:14px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:6px;}
.field input,.field select{
 width:100%;padding:10px 13px;border-radius:10px;border:1px solid var(--line-2);
 background:#f8fafe;font-size:14.5px;color:var(--ink);min-height:42px;
 transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.field input:focus,.field select:focus{
 border-color:var(--brand);background:#fff;
 box-shadow:0 0 0 3px rgba(109,139,255,.2);outline:none;
}
.lead-form .btn{width:100%;margin-top:18px;}
.form-note{margin-top:10px;font-size:13px;color:var(--accent);font-weight:600;}
/* ---------- Footer ---------- */
.site-footer{background:#0f172a;color:#c7d1e8;padding:56px 0 0;margin-top:0;}
.site-footer .brand{color:#fff;}
.site-footer .brand:hover{color:#fff;}
.site-footer .brand-text{color:#fff;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:38px;}
.footer-about{margin-top:14px;font-size:14px;line-height:1.85;color:#9fadc9;max-width:320px;}
.site-footer h4{font-size:15px;color:#fff;font-weight:700;margin-bottom:14px;}
.footer-links{display:grid;gap:9px;}
.footer-links a{color:#9fadc9;font-size:14px;}
.footer-links a:hover{color:#fff;}
.footer-copy{font-size:14px;line-height:1.85;color:#9fadc9;}
.footer-copy strong{color:#fff;}
.footer-bottom{
 border-top:1px solid rgba(255,255,255,.12);
 padding:18px 0 22px;display:flex;flex-wrap:wrap;gap:10px;
 align-items:center;justify-content:space-between;
 font-size:13px;color:#8494b4;
}
/* ---------- Responsive ---------- */
@media (max-width:1024px){
 .hero-grid{grid-template-columns:1fr;gap:36px;}
 .metric-grid{grid-template-columns:repeat(2,1fr);}
 .rule-grid{grid-template-columns:repeat(2,1fr);}
 .news-grid{grid-template-columns:repeat(2,1fr);}
 .guard-grid{grid-template-columns:repeat(2,1fr);}
 .timeline{grid-template-columns:repeat(2,1fr);}
 .quick-grid{grid-template-columns:1fr;}
 .cta-band{grid-template-columns:1fr;padding:36px 30px;}
 .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:768px){
 .nav-wrap{gap:12px;padding:0 16px;}
 .brand-text{font-size:16px;}
 .nav-cta{padding:8px 15px;font-size:13.5px;}
 .page-hero{padding:40px 0 46px;}
 .section{padding:48px 0;}
 .compare-grid{grid-template-columns:1fr;}
 .metric-grid{grid-template-columns:1fr 1fr;}
 .news-grid{grid-template-columns:1fr;}
 .guard-grid{grid-template-columns:1fr;}
 .timeline{grid-template-columns:1fr;}
 .rule-grid{grid-template-columns:1fr;}
 .footer-grid{grid-template-columns:1fr;gap:26px;}
 .footer-about{max-width:none;}
}
@media (max-width:520px){
 .container{padding:0 16px;}
 .nav-wrap{flex-wrap:wrap;padding:10px 16px;gap:10px;}
 .chip-nav{order:3;width:100%;flex-basis:100%;padding:2px 0 4px;}
 .nav-cta{order:2;margin-left:auto;}
 .hero-title{font-size:26px;}
 .hero-actions .btn{width:100%;}
 .metric-num{font-size:28px;}
 .cta-band{padding:28px 20px;}
 .lead-form{padding:20px 18px;}
 .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category3 */
:root{
 --ink:#0f172a;
 --ink-2:#3d4b66;
 --ink-3:#6a7894;
 --bg:#f5f7fc;
 --bg-alt:#eef2fb;
 --surface:#ffffff;
 --brand:#3b5bdb;
 --brand-2:#6d8bff;
 --brand-deep:#22307a;
 --accent:#0ea47a;
 --gold:#f2a516;
 --line:#e3e8f4;
 --line-2:#d3dbee;
 --radius:14px;
 --radius-lg:22px;
 --shadow-sm:0 2px 10px rgba(20,36,80,.05);
 --shadow:0 14px 34px rgba(20,36,80,.09);
 --shadow-lg:0 26px 60px rgba(20,36,80,.16);
 --grad:linear-gradient(135deg,#3b5bdb 0%,#6d8bff 46%,#0ea47a 100%);
 --grad-soft:linear-gradient(135deg,rgba(59,91,219,.12),rgba(14,164,122,.12));
 --container:1180px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
 font-size:15.5px;
 line-height:1.78;
 color:var(--ink);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
 text-rendering:optimizeLegibility;
 overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:12px;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
a:hover{color:var(--brand-deep);}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid rgba(59,91,219,.4);outline-offset:2px;border-radius:6px;}
button{font:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.32;letter-spacing:-.01em;overflow-wrap:break-word;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 22px;}

/* ---------- Header ---------- */
.site-header{
 position:sticky;top:0;z-index:60;
 background:rgba(255,255,255,.94);
 backdrop-filter:blur(14px);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:0 10px 26px rgba(20,36,80,.1);}
.nav-wrap{
 max-width:var(--container);margin:0 auto;padding:0 22px;
 min-height:64px;display:flex;align-items:center;gap:18px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{
 width:36px;height:36px;border-radius:11px;background:var(--grad);
 color:#fff;font-weight:700;font-size:17px;display:grid;place-items:center;
 box-shadow:0 6px 16px rgba(59,91,219,.32);letter-spacing:0;
}
.brand-text{font-size:17.5px;font-weight:700;letter-spacing:.2px;white-space:nowrap;}
.chip-nav{
 flex:1 1 auto;display:flex;align-items:center;gap:8px;
 overflow-x:auto;padding:10px 2px;scrollbar-width:none;-ms-overflow-style:none;
}
.chip-nav::-webkit-scrollbar{display:none;}
.chip{
 flex:0 0 auto;display:inline-block;padding:7px 15px;border-radius:999px;
 font-size:14.5px;font-weight:500;color:var(--ink-2);
 background:#f1f4fc;border:1px solid transparent;white-space:nowrap;
 transition:all .2s ease;
}
.chip:hover{background:#e5ebfb;color:var(--brand-deep);transform:translateY(-1px);}
.chip.is-active{background:var(--grad);color:#fff;box-shadow:0 8px 18px rgba(59,91,219,.28);}
.chip.is-active:hover{color:#fff;}
.nav-cta{
 flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
 padding:9px 20px;border-radius:10px;background:var(--brand);color:#fff;
 font-size:14.5px;font-weight:600;box-shadow:0 8px 20px rgba(59,91,219,.3);
 transition:all .2s ease;min-height:40px;
}
.nav-cta:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(34,48,122,.32);}

/* ---------- Buttons ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:12px 26px;border-radius:10px;font-size:15px;font-weight:600;
 border:1.5px solid transparent;cursor:pointer;min-height:44px;
 transition:all .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px rgba(59,91,219,.3);}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(34,48,122,.34);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand-deep);border-color:var(--line-2);box-shadow:var(--shadow-sm);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow);}

/* ---------- Page hero (before / after) ---------- */
.page-hero{
 position:relative;overflow:hidden;padding:54px 0 64px;
 background:
 radial-gradient(880px 440px at 8% -12%,rgba(109,139,255,.20),transparent 62%),
 radial-gradient(720px 420px at 98% 6%,rgba(14,164,122,.15),transparent 60%),
 #f7f9ff;
 border-bottom:1px solid var(--line);
}
.hero-badge{
 display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;
 background:#fff;border:1px solid var(--line-2);color:var(--brand-deep);
 font-size:13.5px;font-weight:600;box-shadow:var(--shadow-sm);
}
.hero-badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);}
.page-hero h1{
 margin-top:20px;
 font-size:clamp(28px,3.2vw,40px);
 line-height:1.28;
 letter-spacing:-.02em;
 max-width:900px;
}
.page-hero h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-lead{margin-top:18px;font-size:15.5px;line-height:1.88;color:var(--ink-2);max-width:820px;}
.hero-tags{margin-top:20px;display:flex;flex-wrap:wrap;gap:10px;}
.tag{
 display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;
 background:var(--grad-soft);border:1px solid rgba(59,91,219,.18);
 color:var(--brand-deep);font-size:13px;font-weight:600;
}
.ba-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:34px;}
.ba-card{
 position:relative;background:var(--surface);border:1px solid var(--line);
 border-radius:var(--radius-lg);padding:26px 24px 22px;box-shadow:var(--shadow-sm);
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.ba-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--line-2);}
.ba-card.is-before{background:linear-gradient(165deg,#ffffff 0%,#f4f6fd 100%);}
.ba-card.is-after{background:linear-gradient(165deg,#ffffff 0%,#f0fbf6 100%);border-color:rgba(14,164,122,.28);}
.ba-label{
 display:inline-flex;align-items:center;gap:8px;padding:5px 14px;border-radius:999px;
 font-size:12.5px;font-weight:700;letter-spacing:.06em;
}
.is-before .ba-label{background:#eaeef9;color:var(--ink-3);}
.is-after .ba-label{background:rgba(14,164,122,.13);color:#0b7f5f;}
.ba-card h2{margin-top:14px;font-size:19px;color:var(--ink);}
.ba-list{margin-top:16px;display:grid;gap:12px;}
.ba-list li{
 position:relative;padding-left:24px;font-size:14.5px;line-height:1.72;color:var(--ink-2);
}
.ba-list li::before{
 content:"";position:absolute;left:0;top:9px;width:9px;height:9px;border-radius:3px;
 background:var(--line-2);transform:rotate(45deg);
}
.is-after .ba-list li::before{background:var(--accent);}
.hero-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- Sections ---------- */
.section{padding:72px 0;}
.section-alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:820px;margin-bottom:34px;}
.eyebrow{
 display:inline-flex;align-items:center;gap:9px;
 font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--brand);
 text-transform:uppercase;
}
.eyebrow::before{content:"";width:26px;height:3px;border-radius:2px;background:var(--grad);}
.section-title{margin-top:12px;font-size:clamp(22px,2.4vw,30px);font-weight:700;}
.section-sub{margin-top:12px;font-size:15px;line-height:1.86;color:var(--ink-2);}

/* ---------- Metric board ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.metric{
 position:relative;background:var(--surface);border:1px solid var(--line);
 border-radius:var(--radius);padding:22px 20px 20px;box-shadow:var(--shadow-sm);
 overflow:hidden;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.metric::after{content:"";position:absolute;left:0;top:0;width:100%;height:4px;background:var(--grad);opacity:.85;}
.metric:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--line-2);}
.metric b{display:block;font-size:30px;font-weight:700;color:var(--brand-deep);letter-spacing:-.02em;line-height:1.2;}
.metric span{display:block;margin-top:6px;font-size:13.5px;color:var(--ink-3);line-height:1.6;}

/* ---------- Channel matrix ---------- */
.channel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.channel-card{
 display:flex;flex-direction:column;gap:10px;
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
 padding:24px 22px;box-shadow:var(--shadow-sm);
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(59,91,219,.35);color:inherit;}
.channel-card .cc-icon{
 width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
 background:var(--grad-soft);border:1px solid rgba(59,91,219,.16);
 font-weight:700;color:var(--brand-deep);font-size:16px;
}
.channel-card h3{font-size:17.5px;color:var(--ink);}
.channel-card p{font-size:14px;line-height:1.76;color:var(--ink-2);}
.channel-card .cc-more{margin-top:auto;font-size:13.5px;font-weight:600;color:var(--brand);}
.channel-card.is-current .cc-icon{background:var(--grad);color:#fff;border-color:transparent;}
.channel-card.is-current .cc-more{color:var(--accent);}

/* ---------- Topic cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.topic-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:24px 22px;box-shadow:var(--shadow-sm);
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--line-2);}
.topic-card .tc-index{
 display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;
 letter-spacing:.08em;color:var(--accent);
}
.topic-card h3{margin-top:10px;font-size:17px;}
.topic-card p{margin-top:10px;font-size:14px;line-height:1.78;color:var(--ink-2);}
.topic-card .tc-foot{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px;}
.mini-tag{
 font-size:12px;font-weight:600;color:var(--ink-3);
 background:#f1f4fc;border:1px solid var(--line);border-radius:999px;padding:4px 11px;
}

/* ---------- Compare ---------- */
.compare-wrap{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
.compare-col{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
 padding:26px 24px;box-shadow:var(--shadow-sm);
}
.compare-col.is-good{border-color:rgba(14,164,122,.28);background:linear-gradient(170deg,#ffffff,#f1fbf7);}
.compare-col h3{font-size:18px;display:flex;align-items:center;gap:10px;}
.compare-col h3 .dot{width:10px;height:10px;border-radius:50%;background:var(--line-2);}
.compare-col.is-good h3 .dot{background:var(--accent);}
.compare-list{margin-top:16px;display:grid;gap:14px;}
.compare-list li{
 display:grid;gap:4px;padding:14px 16px;border-radius:12px;
 background:#f7f9ff;border:1px solid var(--line);
}
.compare-col.is-good .compare-list li{background:#f4fdf9;border-color:rgba(14,164,122,.18);}
.compare-list strong{font-size:14.5px;color:var(--ink);}
.compare-list span{font-size:13.5px;color:var(--ink-2);line-height:1.7;}

/* ---------- Timeline ---------- */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;position:relative;}
.tl-item{
 position:relative;background:var(--surface);border:1px solid var(--line);
 border-radius:var(--radius);padding:24px 20px;box-shadow:var(--shadow-sm);
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.tl-item:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--line-2);}
.tl-num{
 display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;
 background:var(--grad);color:#fff;font-size:15px;font-weight:700;
 box-shadow:0 8px 18px rgba(59,91,219,.26);
}
.tl-item h3{margin-top:14px;font-size:16.5px;}
.tl-item p{margin-top:8px;font-size:13.8px;line-height:1.76;color:var(--ink-2);}

/* ---------- News list ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.news-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);overflow:hidden;
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--line-2);}
.news-link{display:flex;flex-direction:column;gap:10px;height:100%;padding:22px 22px 20px;color:inherit;}
.news-link:hover{color:inherit;}
.news-tag{
 align-self:flex-start;font-size:12px;font-weight:700;letter-spacing:.04em;
 color:var(--brand-deep);background:var(--grad-soft);
 border:1px solid rgba(59,91,219,.16);border-radius:999px;padding:4px 11px;
}
.news-card h3{font-size:16.5px;line-height:1.55;color:var(--ink);}
.news-card p{font-size:13.8px;line-height:1.74;color:var(--ink-2);}
.news-meta{margin-top:auto;font-size:12.5px;color:var(--ink-3);}
.empty-note{
 padding:26px;border-radius:var(--radius);border:1px dashed var(--line-2);
 background:#fff;color:var(--ink-3);font-size:14.5px;text-align:center;
}
.list-more{margin-top:28px;display:flex;justify-content:center;}

/* ---------- Guard band ---------- */
.guard-band{
 background:linear-gradient(135deg,#1b2650 0%,#22307a 52%,#0d5f52 100%);
 color:#e8eefc;border-radius:var(--radius-lg);padding:44px 38px;
 box-shadow:var(--shadow-lg);
}
.guard-band h2{font-size:clamp(21px,2.2vw,27px);color:#fff;}
.guard-band .band-sub{margin-top:12px;font-size:14.6px;line-height:1.84;color:#c4d0ec;max-width:800px;}
.guard-grid{margin-top:28px;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.guard-item{
 background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
 border-radius:14px;padding:20px 18px;transition:background .2s ease,transform .2s ease;
}
.guard-item:hover{background:rgba(255,255,255,.14);transform:translateY(-3px);}
.guard-item b{display:block;font-size:15.5px;color:#fff;}
.guard-item span{display:block;margin-top:8px;font-size:13.4px;line-height:1.72;color:#c4d0ec;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:960px;}
.faq-item{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:rgba(59,91,219,.34);box-shadow:var(--shadow);}
.faq-item summary{
 cursor:pointer;list-style:none;padding:18px 22px;font-size:16px;font-weight:600;color:var(--ink);
 display:flex;align-items:center;gap:12px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
 content:"";flex:0 0 auto;width:9px;height:9px;border-radius:3px;
 background:var(--brand);transform:rotate(45deg);transition:background .2s ease;
}
.faq-item[open] summary::before{background:var(--accent);}
.faq-item summary:hover{color:var(--brand-deep);}
.faq-body{padding:0 22px 20px 43px;font-size:14.5px;line-height:1.84;color:var(--ink-2);}

/* ---------- Signup ---------- */
.signup-panel{
 display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:center;
 background:linear-gradient(140deg,#ffffff 0%,#f2f6ff 58%,#eefbf6 100%);
 border:1px solid var(--line);border-radius:var(--radius-lg);
 padding:40px 38px;box-shadow:var(--shadow);
}
.signup-panel h2{font-size:clamp(21px,2.2vw,27px);}
.signup-panel p{margin-top:12px;font-size:14.6px;line-height:1.84;color:var(--ink-2);}
.signup-form{display:grid;gap:12px;}
.signup-form label{font-size:13.5px;font-weight:600;color:var(--ink-2);}
.signup-form input{
 width:100%;padding:12px 15px;border-radius:10px;border:1.5px solid var(--line-2);
 background:#fff;color:var(--ink);font-size:14.6px;min-height:44px;
 transition:border-color .2s ease,box-shadow .2s ease;
}
.signup-form input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(59,91,219,.12);outline:none;}
.signup-form .btn{width:100%;}
.form-hint{font-size:12.6px;color:var(--ink-3);line-height:1.7;}

/* ---------- Footer ---------- */
.site-footer{background:#101a33;color:#c3cde3;padding:56px 0 24px;}
.site-footer .brand{color:#fff;}
.site-footer .brand-text{color:#fff;}
.site-footer .brand:hover{color:#fff;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:14px;}
.footer-about{margin-top:14px;font-size:14px;line-height:1.82;color:#9fadc9;max-width:340px;}
.footer-links li{margin-bottom:9px;}
.footer-links a{color:#b9c5dd;font-size:14px;}
.footer-links a:hover{color:#fff;}
.footer-copy{font-size:14px;line-height:1.86;color:#9fadc9;}
.footer-copy strong{color:#e8eefc;}
.footer-bottom{
 margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
 display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
 font-size:13px;color:#8b99b8;
}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
 .hero-lead,.section-sub{max-width:100%;}
 .metric-grid{grid-template-columns:repeat(2,1fr);}
 .channel-grid,.card-grid,.news-grid{grid-template-columns:repeat(2,1fr);}
 .timeline{grid-template-columns:repeat(2,1fr);}
 .guard-grid{grid-template-columns:repeat(2,1fr);}
 .signup-panel{grid-template-columns:1fr;gap:26px;}
 .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
 .nav-wrap{flex-wrap:wrap;gap:10px;padding:10px 18px 12px;min-height:0;}
 .brand{flex:1 1 auto;}
 .nav-cta{margin-left:auto;}
 .chip-nav{order:3;flex:1 0 100%;width:100%;padding:6px 0 2px;}
 .container{padding:0 18px;}
 .page-hero{padding:40px 0 48px;}
 .ba-grid,.compare-wrap{grid-template-columns:1fr;}
 .section{padding:54px 0;}
 .section-head{margin-bottom:26px;}
 .guard-band{padding:32px 22px;}
 .guard-grid{grid-template-columns:1fr;}
 .signup-panel{padding:28px 22px;}
}
@media (max-width:560px){
 .metric-grid,.channel-grid,.card-grid,.news-grid,.timeline,.footer-grid{grid-template-columns:1fr;}
 .brand-text{font-size:16px;}
 .hero-actions .btn{width:100%;}
 .btn{padding:12px 20px;}
 .faq-item summary{padding:16px 18px;font-size:15.2px;}
 .faq-body{padding:0 18px 18px 39px;}
 .footer-bottom{flex-direction:column;align-items:flex-start;}
 .metric b{font-size:26px;}
}