/* roulang page: index */
:root{
  --ink:#0d1b26;
  --ink-2:#1d3446;
  --deep:#06202d;
  --deep-2:#0a3143;
  --deep-3:#0e4257;
  --brand:#1279a0;
  --brand-deep:#0b5b7a;
  --accent:#f2a63b;
  --accent-deep:#d7860f;
  --bg:#f3f8fa;
  --bg-alt:#ffffff;
  --line:#dbe7ee;
  --muted:#5b7484;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 2px 12px rgba(10,40,58,.06);
  --shadow-lg:0 14px 34px rgba(10,40,58,.13);
  --ease:.2s ease;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:15px;
  line-height:1.78;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;border-radius:var(--radius-sm);}
button{font-family:inherit;cursor:pointer;}
input{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}

.container{width:100%;max-width:1180px;margin:0 auto;padding:0 22px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-stuck{box-shadow:0 6px 22px rgba(10,40,58,.09);}
.nav-wrap{
  height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:.2px;color:var(--deep);white-space:nowrap;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(140deg,var(--brand) 0%,var(--deep-3) 100%);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(18,121,160,.32);
  flex:0 0 auto;
}
.logo-mark svg{width:19px;height:19px;stroke:#fff;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  display:inline-flex;align-items:center;
  height:38px;padding:0 14px;border-radius:9px;
  font-size:14.5px;font-weight:600;color:var(--ink-2);
  transition:background var(--ease),color var(--ease);
  white-space:nowrap;
}
.nav-link:hover{background:#eaf4f8;color:var(--brand-deep);}
.nav-link.active{background:#e3f1f7;color:var(--brand-deep);}
.nav-right{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;
}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink-2);fill:none;stroke-width:2;stroke-linecap:round;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  height:46px;padding:0 24px;border-radius:9px;
  font-size:15px;font-weight:700;border:1px solid transparent;
  transition:transform var(--ease),background var(--ease),box-shadow var(--ease),border-color var(--ease),color var(--ease);
  white-space:nowrap;
}
.btn svg{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(18,121,160,.28);}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-2px);box-shadow:0 10px 22px rgba(18,121,160,.34);}
.btn-accent{background:var(--accent);color:#3a2404;box-shadow:0 6px 16px rgba(242,166,59,.34);}
.btn-accent:hover{background:var(--accent-deep);color:#fff;transform:translateY(-2px);}
.btn-ghost{background:rgba(255,255,255,.1);color:#eaf6fb;border-color:rgba(255,255,255,.42);}
.btn-ghost:hover{background:rgba(255,255,255,.2);transform:translateY(-2px);}
.btn-outline{background:#fff;color:var(--brand-deep);border-color:#bcd9e5;}
.btn-outline:hover{border-color:var(--brand);background:#f0f8fb;transform:translateY(-2px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:8px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:var(--deep);
  color:#e8f4f9;
  padding:66px 0 78px;
}
.hero-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:.30;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(70% 90% at 12% 18%,rgba(18,121,160,.55) 0%,rgba(6,32,45,.1) 55%,rgba(6,32,45,.9) 100%),
             linear-gradient(180deg,rgba(6,32,45,.55) 0%,rgba(6,32,45,.9) 100%);
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.35fr .92fr;gap:52px;align-items:center;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  height:32px;padding:0 14px;border-radius:999px;
  background:rgba(242,166,59,.16);border:1px solid rgba(242,166,59,.5);
  color:#ffd79a;font-size:13px;font-weight:700;letter-spacing:.6px;
}
.hero-tag::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(242,166,59,.18);}
.hero-title{
  margin-top:20px;
  font-size:42px;line-height:1.28;font-weight:800;letter-spacing:-.4px;
  color:#ffffff;
  text-shadow:0 2px 18px rgba(0,0,0,.35);
}
.hero-title em{font-style:normal;color:#ffca7a;}
.hero-lead{
  margin-top:20px;max-width:620px;
  font-size:15.5px;line-height:1.9;color:#c3dce7;
}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:12px;}
.hero-tags{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px;}
.pill{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;
  border-radius:999px;font-size:13px;font-weight:600;
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.2);color:#d3e8f1;
}

/* invite card */
.invite-card{
  background:linear-gradient(160deg,rgba(14,66,87,.94) 0%,rgba(6,32,45,.96) 100%);
  border:1px solid rgba(255,255,255,.16);
  border-radius:18px;
  padding:26px 24px 24px;
  box-shadow:0 22px 46px rgba(0,0,0,.36);
}
.invite-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.invite-title{font-size:17px;font-weight:800;color:#fff;}
.invite-badge{
  font-size:12px;font-weight:800;color:#3a2404;background:var(--accent);
  padding:3px 10px;border-radius:999px;
}
.invite-desc{margin-top:12px;font-size:13.5px;line-height:1.8;color:#a9c9d8;}
.invite-reward{
  margin-top:16px;display:flex;gap:10px;
}
.reward-item{
  flex:1;text-align:center;padding:12px 6px;border-radius:11px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
}
.reward-item strong{display:block;font-size:17px;font-weight:800;color:#ffca7a;}
.reward-item span{display:block;margin-top:3px;font-size:12px;color:#9dbecd;}
.progress-label{
  margin-top:20px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:#b8d6e3;font-weight:600;
}
.progress-label b{color:#ffca7a;font-size:14px;}
.progress{
  margin-top:9px;height:10px;border-radius:999px;
  background:rgba(255,255,255,.13);overflow:hidden;
}
.progress-bar{
  height:100%;border-radius:999px;
  background:linear-gradient(90deg,var(--accent) 0%,#ffd79a 100%);
  box-shadow:0 0 14px rgba(242,166,59,.6);
  transition:width .5s ease;
}
.invite-card .btn{width:100%;margin-top:20px;}
.invite-note{margin-top:11px;font-size:12px;color:#8fb2c3;text-align:center;}

/* ---------- Sections ---------- */
.section{padding:66px 0;}
.section-alt{background:var(--bg-alt);}
.section-dark{background:linear-gradient(165deg,var(--deep-2) 0%,var(--deep) 100%);color:#d6eaf2;}
.section-head{max-width:760px;margin-bottom:36px;}
.section-kicker{
  display:inline-flex;align-items:center;gap:9px;
  font-size:13px;font-weight:800;letter-spacing:1.2px;color:var(--brand);
  text-transform:uppercase;
}
.section-kicker::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--accent);}
.section-dark .section-kicker{color:#7fd3ec;}
.section-title{
  margin-top:12px;font-size:29px;line-height:1.36;font-weight:800;letter-spacing:-.2px;color:var(--ink);
}
.section-dark .section-title{color:#fff;}
.section-desc{margin-top:12px;font-size:15px;line-height:1.85;color:var(--muted);}
.section-dark .section-desc{color:#a8c8d6;}

/* ---------- Grids ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}

/* ---------- Cards ---------- */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  display:flex;flex-direction:column;height:100%;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#b9d8e6;}
.card-icon{
  width:44px;height:44px;border-radius:12px;
  background:#e8f4f9;display:flex;align-items:center;justify-content:center;
  margin-bottom:16px;
}
.card-icon svg{width:22px;height:22px;stroke:var(--brand);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.card-title{font-size:17px;font-weight:800;color:var(--ink);}
.card-text{margin-top:10px;font-size:14px;line-height:1.8;color:var(--muted);flex:1;}
.card-meta{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:7px;
  font-size:12px;font-weight:700;background:#eef6f9;color:var(--brand-deep);
}
.tag-accent{background:rgba(242,166,59,.16);color:#9a6206;}

/* channel cards */
.channel-card{
  position:relative;overflow:hidden;
  border-radius:16px;border:1px solid var(--line);
  background:#fff;box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  display:flex;flex-direction:column;
}
.channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#b9d8e6;}
.channel-thumb{height:158px;overflow:hidden;background:#0b2b3c;position:relative;}
.channel-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s ease;}
.channel-card:hover .channel-thumb img{transform:scale(1.05);}
.channel-thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,32,45,0) 35%,rgba(6,32,45,.62) 100%);
}
.channel-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1;}
.channel-title{font-size:17.5px;font-weight:800;color:var(--ink);}
.channel-text{margin-top:9px;font-size:13.8px;line-height:1.78;color:var(--muted);flex:1;}
.channel-link{
  margin-top:16px;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:800;color:var(--brand-deep);
}
.channel-link svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;transition:transform var(--ease);}
.channel-card:hover .channel-link svg{transform:translateX(4px);}

/* ---------- Update rows ---------- */
.update-list{display:flex;flex-direction:column;gap:12px;}
.update-row{
  display:grid;grid-template-columns:1fr 118px 108px;gap:18px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:18px 22px;box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.update-row:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#b9d8e6;}
.update-title{font-size:15.5px;font-weight:800;color:var(--ink);line-height:1.55;}
.update-desc{margin-top:6px;font-size:13.5px;line-height:1.7;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.update-cat{
  justify-self:start;font-size:12px;font-weight:700;color:var(--brand-deep);
  background:#eaf4f9;border-radius:7px;padding:4px 11px;white-space:nowrap;
}
.update-time{justify-self:end;font-size:12.5px;color:#8aa2b0;white-space:nowrap;font-variant-numeric:tabular-nums;}
.empty-tip{
  padding:34px 22px;text-align:center;border:1px dashed #c6dbe6;border-radius:12px;
  color:var(--muted);font-size:14px;background:#fbfdfe;
}

/* ---------- Stats board ---------- */
.stat-board{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.stat-cell{
  padding:26px 20px;border-radius:14px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  transition:background var(--ease),transform var(--ease);
}
.stat-cell:hover{background:rgba(255,255,255,.11);transform:translateY(-3px);}
.stat-num{font-size:32px;font-weight:800;color:#ffca7a;letter-spacing:-.5px;font-variant-numeric:tabular-nums;}
.stat-num small{font-size:15px;margin-left:3px;color:#ffd79a;font-weight:700;}
.stat-label{margin-top:8px;font-size:14px;font-weight:700;color:#e6f3f8;}
.stat-note{margin-top:6px;font-size:12.8px;line-height:1.66;color:#9dbecd;}

/* ---------- Rank table ---------- */
.rank-table{
  background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  box-shadow:var(--shadow);
}
.rank-row{
  display:grid;grid-template-columns:56px 1fr 132px 122px 130px;gap:14px;align-items:center;
  padding:15px 22px;border-bottom:1px solid #edf4f7;
  transition:background var(--ease);
}
.rank-row:last-child{border-bottom:none;}
.rank-row:hover{background:#f6fbfd;}
.rank-head{background:#eef6f9;font-size:12.5px;font-weight:800;color:var(--brand-deep);letter-spacing:.6px;}
.rank-no{
  width:30px;height:30px;border-radius:9px;display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;color:#fff;background:#9db8c6;
}
.rank-no.top1{background:linear-gradient(140deg,#f2a63b,#d7860f);}
.rank-no.top2{background:linear-gradient(140deg,#7fb6cc,#4e88a1);}
.rank-no.top3{background:linear-gradient(140deg,#a9c6a0,#78975f);}
.rank-name{font-size:14.5px;font-weight:700;color:var(--ink);}
.rank-mul{font-size:14px;font-weight:800;color:var(--brand-deep);font-variant-numeric:tabular-nums;}
.rank-hot{display:flex;align-items:center;gap:9px;}
.hot-bar{flex:1;height:7px;border-radius:999px;background:#e8f1f6;overflow:hidden;}
.hot-bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand),#57b6d3);}
.rank-trend{font-size:12.5px;font-weight:700;color:#2f9a72;justify-self:end;white-space:nowrap;}
.rank-trend.down{color:#c1633f;}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;position:relative;}
.step-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 24px;box-shadow:var(--shadow);position:relative;
  transition:transform var(--ease),box-shadow var(--ease);
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.step-num{
  font-size:13px;font-weight:800;letter-spacing:1.4px;color:var(--accent-deep);
}
.step-title{margin-top:10px;font-size:17px;font-weight:800;color:var(--ink);}
.step-text{margin-top:10px;font-size:14px;line-height:1.8;color:var(--muted);}

/* ---------- Split panel ---------- */
.split{display:grid;grid-template-columns:1.02fr .98fr;gap:46px;align-items:center;}
.split-media{border-radius:16px;overflow:hidden;box-shadow:var(--shadow-lg);border:1px solid var(--line);}
.split-media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.check-list{margin-top:22px;display:flex;flex-direction:column;gap:14px;}
.check-item{display:flex;gap:12px;align-items:flex-start;}
.check-dot{
  flex:0 0 auto;width:24px;height:24px;border-radius:8px;background:#e6f3f9;
  display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.check-dot svg{width:14px;height:14px;stroke:var(--brand);fill:none;stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round;}
.check-item strong{font-size:14.5px;font-weight:800;color:var(--ink);display:block;}
.check-item span{font-size:13.6px;line-height:1.78;color:var(--muted);display:block;margin-top:2px;}

/* ---------- Version timeline ---------- */
.timeline{display:flex;flex-direction:column;gap:0;margin-top:6px;}
.tl-item{
  display:grid;grid-template-columns:160px 1fr;gap:26px;
  padding:24px 0;border-bottom:1px dashed #dbe7ee;
}
.tl-item:last-child{border-bottom:none;}
.tl-ver{display:flex;flex-direction:column;gap:6px;}
.tl-ver b{font-size:16px;font-weight:800;color:var(--brand-deep);}
.tl-ver span{font-size:12.5px;color:#8aa2b0;}
.tl-body h4{font-size:15.5px;font-weight:800;color:var(--ink);}
.tl-body p{margin-top:7px;font-size:14px;line-height:1.8;color:var(--muted);}

/* ---------- Devices ---------- */
.device-card{
  border-radius:14px;padding:26px 22px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  transition:background var(--ease),transform var(--ease);
}
.device-card:hover{background:rgba(255,255,255,.11);transform:translateY(-3px);}
.device-card h4{font-size:16px;font-weight:800;color:#fff;}
.device-card p{margin-top:9px;font-size:13.6px;line-height:1.78;color:#a8c8d6;}
.device-card .tag{margin-top:14px;background:rgba(242,166,59,.16);color:#ffca7a;}

/* ---------- Trust bar ---------- */
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.trust-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:22px 20px;box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease);
}
.trust-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);}
.trust-item h4{font-size:15px;font-weight:800;color:var(--ink);display:flex;align-items:center;gap:9px;}
.trust-item h4 svg{width:17px;height:17px;stroke:var(--brand);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.trust-item p{margin-top:9px;font-size:13.5px;line-height:1.78;color:var(--muted);}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:920px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:22px 24px;box-shadow:var(--shadow);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item:hover{border-color:#b9d8e6;box-shadow:var(--shadow-lg);}
.faq-q{font-size:15.5px;font-weight:800;color:var(--ink);display:flex;gap:12px;align-items:flex-start;}
.faq-q i{
  flex:0 0 auto;width:24px;height:24px;border-radius:8px;background:#eaf4f9;
  color:var(--brand-deep);font-style:normal;font-size:12.5px;font-weight:800;
  display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.faq-a{margin-top:11px;padding-left:36px;font-size:14px;line-height:1.85;color:var(--muted);}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(150deg,var(--deep-3) 0%,var(--deep) 100%);
  border-radius:20px;padding:46px 44px;
  display:grid;grid-template-columns:1.2fr .8fr;gap:38px;align-items:center;
  box-shadow:0 22px 46px rgba(6,32,45,.3);
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;
  border-radius:50%;background:radial-gradient(circle,rgba(242,166,59,.34),rgba(242,166,59,0) 68%);
}
.cta-band h2{font-size:27px;font-weight:800;color:#fff;line-height:1.4;position:relative;z-index:2;}
.cta-band p{margin-top:12px;font-size:14.5px;line-height:1.85;color:#b3d2df;position:relative;z-index:2;}
.cta-form{position:relative;z-index:2;display:flex;flex-direction:column;gap:12px;}
.cta-form input{
  height:48px;border-radius:9px;border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.1);color:#fff;padding:0 16px;font-size:14.5px;
  transition:border-color var(--ease),background var(--ease);
}
.cta-form input::placeholder{color:#8fb2c3;}
.cta-form input:focus{border-color:var(--accent);background:rgba(255,255,255,.16);outline:none;}
.form-hint{font-size:12.5px;color:#8fb2c3;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--deep);color:#a8c8d6;padding:56px 0 0;margin-top:0;
  border-top:1px solid rgba(255,255,255,.08);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:44px;padding-bottom:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:#fff;}
.footer-brand .logo-mark{box-shadow:none;}
.footer-desc{margin-top:14px;font-size:13.6px;line-height:1.85;color:#8fb2c3;max-width:360px;}
.footer-col h5{font-size:13.5px;font-weight:800;color:#fff;letter-spacing:.6px;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:13.6px;color:#9dbecd;transition:color var(--ease);display:inline-block;}
.footer-col a:hover{color:#ffca7a;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
  font-size:12.8px;color:#7fa0b1;
}
.footer-bottom span b{color:#b8d6e3;font-weight:700;}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .hero-title{font-size:34px;}
  .grid-4,.stat-board,.trust-grid{grid-template-columns:repeat(2,1fr);}
  .grid-3,.steps{grid-template-columns:repeat(2,1fr);}
  .split{grid-template-columns:1fr;gap:30px;}
  .cta-band{grid-template-columns:1fr;padding:38px 30px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .rank-row{grid-template-columns:46px 1fr 108px 100px;gap:12px;}
  .rank-row .rank-trend{display:none;}
}
@media (max-width:820px){
  .main-nav{
    position:absolute;top:64px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border-bottom:1px solid var(--line);
    padding:12px 18px 18px;box-shadow:0 16px 30px rgba(10,40,58,.12);
    display:none;
  }
  .main-nav.open{display:flex;}
  .nav-link{height:44px;padding:0 12px;font-size:15px;}
  .nav-toggle{display:flex;}
  .nav-right .btn-sm{display:none;}
  .section{padding:52px 0;}
  .section-title{font-size:24px;}
  .hero{padding:48px 0 58px;}
  .hero-title{font-size:29px;}
  .update-row{grid-template-columns:1fr;gap:10px;}
  .update-cat{justify-self:start;}
  .update-time{justify-self:start;}
  .tl-item{grid-template-columns:1fr;gap:8px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .hero-title{font-size:25px;line-height:1.35;}
  .hero-lead{font-size:14.5px;}
  .grid-3,.grid-4,.grid-2,.steps,.stat-board,.trust-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .rank-row{grid-template-columns:40px 1fr 88px;gap:10px;padding:14px 16px;}
  .rank-row .rank-hot{display:none;}
  .rank-head{font-size:11.5px;}
  .btn{height:44px;padding:0 18px;font-size:14.5px;}
  .cta-band{padding:32px 22px;}
  .cta-band h2{font-size:22px;}
  .section-title{font-size:21px;}
  .faq-a{padding-left:0;}
  .invite-card{padding:22px 18px;}
}

/* roulang page: article */
:root{
  --ink:#0d1b26;
  --ink-2:#1d3446;
  --deep:#06202d;
  --deep-2:#0a3143;
  --deep-3:#0e4257;
  --brand:#1279a0;
  --brand-deep:#0b5b7a;
  --accent:#f2a63b;
  --accent-deep:#d7860f;
  --bg:#f3f8fa;
  --bg-alt:#ffffff;
  --line:#dbe7ee;
  --muted:#5b7484;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 2px 12px rgba(10,40,58,.06);
  --shadow-lg:0 14px 34px rgba(10,40,58,.13);
  --ease:.2s ease;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:15px;line-height:1.78;color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;}
input{font-family:inherit;}
h1,h2,h3,h4,h5,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 22px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-stuck{box-shadow:0 6px 22px rgba(10,40,58,.09);}
.nav-wrap{height:64px;display:flex;align-items:center;justify-content:space-between;gap:18px;}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:.2px;color:var(--deep);white-space:nowrap;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--brand) 0%,var(--deep-3) 100%);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(18,121,160,.32);
}
.logo-mark svg{width:19px;height:19px;stroke:#fff;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:9px;
  font-size:14.5px;font-weight:600;color:var(--ink-2);white-space:nowrap;
  transition:background var(--ease),color var(--ease);
}
.nav-link:hover{background:#eaf4f8;color:var(--brand-deep);}
.nav-link.active{background:#e3f1f7;color:var(--brand-deep);}
.nav-right{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;
}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink-2);fill:none;stroke-width:2;stroke-linecap:round;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  height:46px;padding:0 24px;border-radius:9px;border:1px solid transparent;
  font-size:15px;font-weight:700;white-space:nowrap;
  transition:transform var(--ease),background var(--ease),box-shadow var(--ease),border-color var(--ease),color var(--ease);
}
.btn svg{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(18,121,160,.28);}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-2px);box-shadow:0 10px 22px rgba(18,121,160,.34);}
.btn-accent{background:var(--accent);color:#3a2404;box-shadow:0 6px 16px rgba(242,166,59,.34);}
.btn-accent:hover{background:var(--accent-deep);color:#fff;transform:translateY(-2px);}
.btn-outline{background:#fff;color:var(--brand-deep);border-color:#bcd9e5;}
.btn-outline:hover{border-color:var(--brand);background:#f0f8fb;transform:translateY(-2px);}
.btn-ghost{background:rgba(255,255,255,.12);color:#eaf6fb;border-color:rgba(255,255,255,.42);}
.btn-ghost:hover{background:rgba(255,255,255,.22);transform:translateY(-2px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:8px;}
.btn:focus-visible,a:focus-visible,button:focus-visible{outline:3px solid rgba(242,166,59,.55);outline-offset:2px;}

/* ---------- Article Hero ---------- */
.post-hero{
  position:relative;overflow:hidden;background:var(--deep);color:#e8f4f9;
  padding:56px 0 64px;
}
.post-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.28;}
.post-hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(75% 95% at 10% 15%,rgba(18,121,160,.55) 0%,rgba(6,32,45,.12) 58%,rgba(6,32,45,.92) 100%),
             linear-gradient(180deg,rgba(6,32,45,.55) 0%,rgba(6,32,45,.92) 100%);
}
.post-hero-inner{position:relative;z-index:2;max-width:880px;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#9dbecd;}
.crumb span{color:#6f95a8;}
.crumb strong{color:#d7e9f1;font-weight:600;}
.post-meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px;}
.meta-chip{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;
  font-size:12.5px;font-weight:700;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);color:#d3e8f1;
}
.meta-chip.brand{background:rgba(242,166,59,.16);border-color:rgba(242,166,59,.5);color:#ffd79a;}
.post-title{
  margin-top:18px;font-size:36px;line-height:1.34;font-weight:800;letter-spacing:-.3px;
  color:#fff;text-shadow:0 2px 18px rgba(0,0,0,.35);
}
.post-lead{margin-top:16px;font-size:15px;line-height:1.88;color:#c3dce7;max-width:720px;}
.post-hero-tags{margin-top:22px;display:flex;flex-wrap:wrap;gap:10px;}
.pill{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  font-size:13px;font-weight:600;color:#d3e8f1;
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.2);
}

/* ---------- Sections ---------- */
.section{padding:62px 0;}
.section-alt{background:var(--bg-alt);}
.section-dark{background:linear-gradient(165deg,var(--deep) 0%,var(--deep-2) 60%,var(--deep-3) 100%);color:#dfeef5;}
.sec-head{max-width:760px;margin-bottom:32px;}
.sec-kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:800;
  letter-spacing:1.4px;color:var(--brand);text-transform:uppercase;
}
.sec-kicker::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--accent);}
.sec-title{margin-top:10px;font-size:27px;line-height:1.36;font-weight:800;color:var(--deep);letter-spacing:-.2px;}
.sec-desc{margin-top:12px;font-size:14.5px;line-height:1.85;color:var(--muted);}
.section-dark .sec-title{color:#fff;}
.section-dark .sec-desc{color:#a8c7d5;}
.section-dark .sec-kicker{color:#ffca7a;}

/* ---------- Article Body ---------- */
.article-wrap{padding:56px 0 20px;}
.article-card{
  max-width:860px;margin:0 auto;background:#fff;border:1px solid var(--line);
  border-radius:18px;box-shadow:var(--shadow);padding:40px 44px;
}
.post-body{font-size:15.5px;line-height:1.92;color:var(--ink-2);}
.post-body h2{
  font-size:23px;line-height:1.5;font-weight:800;color:var(--deep);
  margin:34px 0 14px;padding-left:13px;border-left:4px solid var(--brand);
}
.post-body h3{font-size:18px;font-weight:800;color:var(--deep);margin:26px 0 10px;}
.post-body h4{font-size:16px;font-weight:800;color:var(--ink-2);margin:22px 0 8px;}
.post-body p{margin:0 0 16px;}
.post-body ul,.post-body ol{padding-left:22px;margin:0 0 16px;list-style:revert;}
.post-body li{margin-bottom:8px;}
.post-body img{border-radius:12px;margin:18px 0;width:100%;height:auto;}
.post-body a{color:var(--brand-deep);text-decoration:underline;text-underline-offset:3px;}
.post-body a:hover{color:var(--accent-deep);}
.post-body blockquote{
  margin:22px 0;padding:16px 20px;background:#f0f8fb;
  border-left:4px solid var(--accent);border-radius:0 12px 12px 0;color:var(--ink-2);
}
.post-body table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14.5px;}
.post-body th,.post-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;}
.post-body th{background:#eef6fa;font-weight:700;color:var(--deep);}
.post-body hr{border:0;border-top:1px solid var(--line);margin:28px 0;}
.empty-box{text-align:center;padding:26px 10px 10px;}
.empty-box p{font-size:16px;color:var(--muted);margin-bottom:20px;}
.back-link{display:inline-flex;align-items:center;gap:6px;color:#eaf6fb;}

/* ---------- Cards ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#bcd9e5;}
.card-icon{
  width:40px;height:40px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:#e9f4f9;margin-bottom:14px;
}
.card-icon svg{width:20px;height:20px;stroke:var(--brand-deep);fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}
.card h3{font-size:16.5px;font-weight:800;color:var(--deep);margin-bottom:8px;}
.card p{font-size:14px;line-height:1.8;color:var(--muted);}
.card .tagline{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;height:25px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:700;background:#eef6fa;color:var(--brand-deep);border:1px solid #d5e9f1;
}
.tag.amber{background:#fdf3e2;color:#9a6308;border-color:#f4dcb2;}

/* ---------- Multiplier rows ---------- */
.rate-table{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow);}
.rate-row{
  display:grid;grid-template-columns:130px 1fr 1fr;gap:16px;align-items:center;
  padding:16px 22px;border-bottom:1px solid var(--line);font-size:14px;color:var(--ink-2);
  transition:background var(--ease);
}
.rate-row:last-child{border-bottom:0;}
.rate-row:hover{background:#f6fbfd;}
.rate-row.head{background:#eef6fa;font-size:13px;font-weight:800;color:var(--deep);letter-spacing:.4px;}
.rate-num{font-size:17px;font-weight:800;color:var(--brand-deep);}
.rate-num small{font-size:12px;font-weight:700;color:var(--muted);margin-left:2px;}

/* ---------- Fish list ---------- */
.fish-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
.fish-item{
  display:flex;gap:14px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:16px 18px;box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.fish-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#bcd9e5;}
.fish-dot{
  flex:0 0 auto;width:11px;height:11px;border-radius:50%;margin-top:8px;
  background:var(--brand);box-shadow:0 0 0 4px rgba(18,121,160,.14);
}
.fish-item h4{font-size:15px;font-weight:800;color:var(--deep);margin-bottom:4px;}
.fish-item p{font-size:13.5px;line-height:1.78;color:var(--muted);}

/* ---------- Split feature ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;}
.split-media img{border-radius:16px;box-shadow:var(--shadow-lg);border:1px solid var(--line);width:100%;height:320px;object-fit:cover;}
.split-copy h2{margin-top:10px;}
.check-list{margin-top:20px;display:grid;gap:12px;}
.check-item{display:flex;gap:11px;align-items:flex-start;font-size:14.5px;color:var(--ink-2);line-height:1.75;}
.check-item svg{flex:0 0 auto;width:19px;height:19px;margin-top:4px;stroke:var(--brand);fill:none;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:900px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 24px;box-shadow:var(--shadow);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item:hover{border-color:#bcd9e5;box-shadow:var(--shadow-lg);}
.faq-item h3{font-size:15.5px;font-weight:800;color:var(--deep);margin-bottom:8px;display:flex;gap:10px;align-items:baseline;}
.faq-item h3::before{content:"Q";flex:0 0 auto;color:var(--accent-deep);font-size:13px;font-weight:900;}
.faq-item p{font-size:14px;line-height:1.85;color:var(--muted);padding-left:23px;}

/* ---------- Related list ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.rel-item{
  display:flex;flex-direction:column;gap:10px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:20px 20px 22px;box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.rel-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#bcd9e5;}
.rel-item h4{font-size:15.5px;font-weight:800;color:var(--deep);line-height:1.6;}
.rel-item span{font-size:13px;color:var(--muted);}
.rel-empty{font-size:14px;color:var(--muted);}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:18px;padding:40px 42px;
  background:linear-gradient(140deg,var(--deep) 0%,var(--deep-3) 70%,var(--brand-deep) 100%);
  color:#e6f3f8;display:flex;flex-wrap:wrap;gap:26px;align-items:center;justify-content:space-between;
  box-shadow:var(--shadow-lg);
}
.cta-band h2{font-size:23px;font-weight:800;color:#fff;line-height:1.45;}
.cta-band p{margin-top:10px;font-size:14px;line-height:1.8;color:#b5d2de;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- Footer ---------- */
.site-footer{background:var(--deep);color:#a8c7d5;padding:56px 0 0;margin-top:70px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12);}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:#fff;margin-bottom:14px;}
.footer-desc{font-size:13.5px;line-height:1.9;color:#8fb1c1;max-width:420px;}
.footer-col h5{font-size:14px;font-weight:800;color:#fff;margin-bottom:14px;letter-spacing:.4px;}
.footer-col ul{display:grid;gap:9px;}
.footer-col a{font-size:13.5px;color:#9dbecd;transition:color var(--ease);}
.footer-col a:hover{color:#ffca7a;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  padding:20px 0 26px;font-size:12.5px;color:#7c9dae;
}
.footer-bottom b{color:#cfe3ec;font-weight:700;}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .rel-grid{grid-template-columns:repeat(2,1fr);}
  .split{grid-template-columns:1fr;gap:28px;}
  .split-media img{height:280px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-grid > div:first-child{grid-column:1 / -1;}
}
@media (max-width:900px){
  .main-nav{
    position:absolute;top:64px;left:0;right:0;margin-left:0;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border-bottom:1px solid var(--line);
    padding:10px 16px 16px;display:none;
    box-shadow:0 16px 28px rgba(10,40,58,.12);
  }
  .main-nav.open{display:flex;}
  .nav-link{height:44px;padding:0 14px;}
  .nav-toggle{display:flex;}
  .post-title{font-size:28px;}
  .article-card{padding:28px 22px;}
  .post-body h2{font-size:20px;}
  .rate-row{grid-template-columns:100px 1fr;gap:10px;}
  .rate-row > div:last-child{grid-column:1 / -1;}
  .fish-list{grid-template-columns:1fr;}
}
@media (max-width:640px){
  .section{padding:46px 0;}
  .grid-4,.grid-3,.grid-2,.rel-grid{grid-template-columns:1fr;}
  .post-hero{padding:40px 0 46px;}
  .post-title{font-size:23px;}
  .sec-title{font-size:21px;}
  .cta-band{padding:28px 22px;}
  .cta-band h2{font-size:19px;}
  .btn{width:100%;}
  .nav-right .btn{width:auto;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;}
  .rate-row{font-size:13.5px;padding:14px 16px;}
  .article-card{padding:22px 16px;border-radius:14px;}
  .faq-item{padding:16px 18px;}
  .fish-item{padding:14px 15px;}
}

/* roulang page: category1 */
:root{
 --ink:#0d1b26;
 --ink-2:#1d3446;
 --deep:#06202d;
 --deep-2:#0a3143;
 --deep-3:#0e4257;
 --brand:#1279a0;
 --brand-deep:#0b5b7a;
 --accent:#f2a63b;
 --accent-deep:#d7860f;
 --bg:#f3f8fa;
 --bg-alt:#ffffff;
 --line:#dbe7ee;
 --muted:#5b7484;
 --radius:14px;
 --radius-sm:10px;
 --shadow:0 2px 12px rgba(10,40,58,.06);
 --shadow-lg:0 14px 34px rgba(10,40,58,.13);
 --ease:.2s ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
 font-size:15px;
 line-height:1.78;
 color:var(--ink);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,p,ul{margin:0;}
ul{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;border-radius:var(--radius-sm);}
button{font-family:inherit;cursor:pointer;}
input,select{font-family:inherit;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 22px;}

/* ---------- Header ---------- */
.site-header{
 position:sticky;top:0;z-index:80;
 background:rgba(255,255,255,.94);
 backdrop-filter:blur(12px);
 border-bottom:1px solid var(--line);
 transition:box-shadow var(--ease);
}
.site-header.is-stuck{box-shadow:0 6px 22px rgba(10,40,58,.09);}
.nav-wrap{
 position:relative;
 height:64px;
 display:flex;align-items:center;justify-content:space-between;gap:18px;
}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:.2px;color:var(--deep);white-space:nowrap;}
.logo-mark{
 width:34px;height:34px;border-radius:10px;
 background:linear-gradient(140deg,var(--brand) 0%,var(--deep-3) 100%);
 display:flex;align-items:center;justify-content:center;
 box-shadow:0 4px 12px rgba(18,121,160,.32);
 flex:0 0 auto;
}
.logo-mark svg{width:19px;height:19px;stroke:#fff;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
 display:inline-flex;align-items:center;
 height:38px;padding:0 14px;border-radius:9px;
 font-size:14.5px;font-weight:600;color:var(--ink-2);
 transition:background var(--ease),color var(--ease);
 white-space:nowrap;
}
.nav-link:hover{background:#eaf4f8;color:var(--brand-deep);}
.nav-link.active{background:#e3f1f7;color:var(--brand-deep);}
.nav-right{display:flex;align-items:center;gap:10px;}
.nav-toggle{
 display:none;width:42px;height:42px;border-radius:10px;
 border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;
}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink-2);fill:none;stroke-width:2;stroke-linecap:round;}

/* ---------- Buttons ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:7px;
 height:46px;padding:0 24px;border-radius:9px;
 font-size:15px;font-weight:700;border:1px solid transparent;
 transition:transform var(--ease),background var(--ease),box-shadow var(--ease),border-color var(--ease),color var(--ease);
 white-space:nowrap;
}
.btn svg{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(18,121,160,.28);}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-2px);box-shadow:0 10px 22px rgba(18,121,160,.34);}
.btn-accent{background:var(--accent);color:#3a2404;box-shadow:0 6px 16px rgba(242,166,59,.34);}
.btn-accent:hover{background:var(--accent-deep);color:#fff;transform:translateY(-2px);}
.btn-ghost{background:rgba(255,255,255,.1);color:#eaf6fb;border-color:rgba(255,255,255,.42);}
.btn-ghost:hover{background:rgba(255,255,255,.2);transform:translateY(-2px);}
.btn-outline{background:#fff;color:var(--brand-deep);border-color:#bcd9e5;}
.btn-outline:hover{border-color:var(--brand);background:#f0f8fb;transform:translateY(-2px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:8px;}
.btn:focus-visible,.nav-link:focus-visible,.nav-toggle:focus-visible,a:focus-visible,summary:focus-visible{
 outline:3px solid rgba(242,166,59,.55);outline-offset:2px;
}

/* ---------- Category Hero ---------- */
.cat-hero{position:relative;overflow:hidden;background:var(--deep);color:#e8f4f9;padding:58px 0 78px;}
.cat-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.26;}
.cat-hero::after{
 content:"";position:absolute;inset:0;
 background:radial-gradient(74% 92% at 10% 16%,rgba(18,121,160,.55) 0%,rgba(6,32,45,.08) 56%,rgba(6,32,45,.92) 100%),
 linear-gradient(180deg,rgba(6,32,45,.58) 0%,rgba(6,32,45,.92) 100%);
}
.cat-hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.28fr .86fr;gap:48px;align-items:center;}
.hero-tag{
 display:inline-flex;align-items:center;gap:8px;
 height:32px;padding:0 14px;border-radius:999px;
 background:rgba(242,166,59,.16);border:1px solid rgba(242,166,59,.5);
 color:#ffd79a;font-size:13px;font-weight:700;letter-spacing:.6px;
}
.hero-tag::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(242,166,59,.18);}
.cat-hero h1{
 margin-top:20px;
 font-size:40px;line-height:1.3;font-weight:800;letter-spacing:-.4px;
 color:#ffffff;text-shadow:0 2px 18px rgba(0,0,0,.35);
}
.cat-hero h1 em{font-style:normal;color:#ffca7a;}
.hero-lead{margin-top:18px;max-width:600px;font-size:15.5px;line-height:1.9;color:#c3dce7;}
.hero-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px;}
.hero-tags{margin-top:24px;display:flex;flex-wrap:wrap;gap:10px;}
.pill{
 display:inline-flex;align-items:center;height:30px;padding:0 14px;
 border-radius:999px;font-size:13px;font-weight:600;
 background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.2);color:#d3e8f1;
}

/* ---------- Ring card ---------- */
.ring-card{
 background:linear-gradient(160deg,rgba(14,66,87,.94) 0%,rgba(6,32,45,.96) 100%);
 border:1px solid rgba(255,255,255,.16);
 border-radius:18px;
 padding:24px 22px 22px;
 box-shadow:0 22px 46px rgba(0,0,0,.36);
}
.ring-card-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:18px;}
.ring-card-top h2{font-size:16px;font-weight:800;color:#fff;}
.ring-badge{font-size:11.5px;font-weight:800;color:#3a2404;background:var(--accent);padding:3px 10px;border-radius:999px;}
.ring-wrap{display:flex;align-items:center;gap:18px;}
.ring-box{position:relative;width:112px;height:112px;flex:0 0 auto;}
.ring{width:112px;height:112px;transform:rotate(-90deg);}
.ring-track{fill:none;stroke:rgba(255,255,255,.14);stroke-width:9;}
.ring-bar{fill:none;stroke:var(--accent);stroke-width:9;stroke-linecap:round;stroke-dasharray:327;stroke-dashoffset:72;}
.ring-label{
 position:absolute;inset:0;display:flex;flex-direction:column;
 align-items:center;justify-content:center;text-align:center;
}
.ring-label strong{font-size:23px;font-weight:800;color:#ffca7a;line-height:1.1;}
.ring-label span{font-size:11.5px;color:#9dbecd;margin-top:3px;}
.ring-side{flex:1;min-width:0;}
.ring-side li{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:13px;color:#b6d3e0;padding:6px 0;border-bottom:1px dashed rgba(255,255,255,.12);}
.ring-side li:last-child{border-bottom:0;}
.ring-side li b{color:#ffca7a;font-weight:800;}
.ring-card .btn{width:100%;margin-top:18px;}

/* ---------- Sections ---------- */
.section{padding:62px 0;}
.section-alt{background:var(--bg-alt);}
.section-dark{background:linear-gradient(165deg,var(--deep-2) 0%,var(--deep) 100%);color:#dbeef6;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:30px;flex-wrap:wrap;}
.sec-head h2{
 font-size:26px;font-weight:800;color:var(--deep);letter-spacing:-.3px;
 display:flex;align-items:center;gap:11px;line-height:1.35;
}
.sec-head h2::before{content:"";width:5px;height:22px;border-radius:3px;background:var(--accent);flex:0 0 auto;}
.sec-head p{font-size:14px;color:var(--muted);margin-top:10px;max-width:660px;line-height:1.8;}
.sec-head .head-note{font-size:12.5px;font-weight:700;color:var(--brand-deep);background:#e6f3f8;border-radius:999px;padding:6px 14px;}

/* ---------- Metric band ---------- */
.metric-band{padding:0 0 10px;background:var(--bg);}
.metric-card{
 margin-top:-38px;position:relative;z-index:3;
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-lg);padding:22px 8px;
 display:grid;grid-template-columns:repeat(4,1fr);
}
.metric-item{text-align:center;padding:0 14px;border-right:1px solid var(--line);}
.metric-item:last-child{border-right:0;}
.metric-item strong{display:block;font-size:26px;font-weight:800;color:var(--brand-deep);letter-spacing:-.5px;line-height:1.2;}
.metric-item strong em{font-style:normal;font-size:13.5px;margin-left:3px;color:var(--muted);font-weight:700;}
.metric-item span{display:block;margin-top:5px;font-size:13px;color:var(--muted);}

/* ---------- Cards ---------- */
.phase-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.phase-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:24px 22px;box-shadow:var(--shadow);
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.phase-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#bcd9e5;}
.card-ico{
 width:44px;height:44px;border-radius:12px;background:#e6f3f8;
 display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.card-ico svg{width:22px;height:22px;stroke:var(--brand-deep);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.phase-card h3{font-size:17px;font-weight:800;color:var(--deep);line-height:1.5;}
.phase-card p{margin-top:10px;font-size:14.5px;line-height:1.85;color:var(--ink-2);}
.card-tags{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px;}
.tag{
 display:inline-flex;align-items:center;height:24px;padding:0 10px;
 border-radius:999px;font-size:12px;font-weight:700;
 background:#eaf4f8;color:var(--brand-deep);
}
.tag-accent{background:#fdf0da;color:#8a5806;}

/* ---------- Compare ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:start;}
.compare-panel{
 border-radius:var(--radius);padding:26px 24px;
 border:1px solid var(--line);background:#fff;box-shadow:var(--shadow);
}
.compare-panel.hi{background:linear-gradient(165deg,#fff8ec 0%,#ffffff 64%);border-color:#f2d9ae;}
.compare-panel h3{font-size:18px;font-weight:800;color:var(--deep);display:flex;align-items:center;gap:9px;}
.compare-panel h3 span{
 width:8px;height:8px;border-radius:50%;background:var(--brand);flex:0 0 auto;
}
.compare-panel.hi h3 span{background:var(--accent);}
.compare-sub{margin-top:6px;font-size:13px;color:var(--muted);}
.compare-list{margin-top:16px;}
.compare-list li{
 position:relative;padding-left:20px;margin-top:11px;
 font-size:14.5px;line-height:1.8;color:var(--ink-2);
}
.compare-list li::before{
 content:"";position:absolute;left:0;top:11px;width:8px;height:8px;
 border-radius:2px;background:var(--brand);
}
.compare-panel.hi .compare-list li::before{background:var(--accent);}
.compare-foot{
 margin-top:18px;padding-top:14px;border-top:1px dashed var(--line);
 font-size:13px;color:var(--muted);
}

/* ---------- Scene ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.scene-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:20px 18px;box-shadow:var(--shadow);
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#bcd9e5;}
.scene-card .num{
 display:inline-flex;align-items:center;justify-content:center;
 width:28px;height:28px;border-radius:8px;
 background:var(--deep-3);color:#fff;font-size:13px;font-weight:800;margin-bottom:12px;
}
.scene-card h3{font-size:15.5px;font-weight:800;color:var(--deep);line-height:1.5;}
.scene-card p{margin-top:8px;font-size:13.5px;line-height:1.8;color:var(--ink-2);}

/* ---------- Timeline ---------- */
.timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding-top:0;}
.timeline::before{
 content:"";position:absolute;left:5%;right:5%;top:8px;height:2px;
 background:linear-gradient(90deg,#cfe4ee 0%,#cfe4ee 100%);
}
.tl-item{position:relative;padding-top:30px;}
.tl-dot{
 position:absolute;top:0;left:0;width:18px;height:18px;border-radius:50%;
 background:#fff;border:3px solid var(--brand);box-shadow:0 0 0 4px rgba(18,121,160,.1);
}
.tl-item:nth-child(4) .tl-dot{border-color:var(--accent);box-shadow:0 0 0 4px rgba(242,166,59,.14);}
.tl-item h3{font-size:15.5px;font-weight:800;color:var(--deep);}
.tl-item span{display:block;margin-top:4px;font-size:12.5px;font-weight:700;color:var(--brand-deep);}
.tl-item p{margin-top:8px;font-size:13.5px;line-height:1.8;color:var(--ink-2);}

/* ---------- Post list ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.post-card{
 display:flex;flex-direction:column;
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:20px;box-shadow:var(--shadow);
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#bcd9e5;}
.post-card h3{font-size:15.5px;font-weight:700;line-height:1.62;color:var(--deep);}
.post-card p{
 margin-top:9px;font-size:13.5px;line-height:1.78;color:var(--muted);
 display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
 margin-top:auto;padding-top:14px;display:flex;align-items:center;flex-wrap:wrap;gap:8px;
 font-size:12px;color:var(--muted);
}
.post-meta .dot{width:4px;height:4px;border-radius:50%;background:#c3d6e0;}
.empty-note{
 grid-column:1/-1;background:#fff;border:1px dashed #c7dce7;border-radius:var(--radius);
 padding:28px;text-align:center;color:var(--muted);font-size:14px;
}

/* ---------- Assurance ---------- */
.assure-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.assure-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:22px 18px;box-shadow:var(--shadow);text-align:left;
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.assure-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#bcd9e5;}
.assure-card h3{font-size:15px;font-weight:800;color:var(--deep);display:flex;align-items:center;gap:8px;}
.assure-card h3 svg{width:17px;height:17px;stroke:var(--brand);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto;}
.assure-card p{margin-top:9px;font-size:13.5px;line-height:1.8;color:var(--ink-2);}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:880px;margin:0 auto;}
.faq-item{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
 padding:0 20px;box-shadow:var(--shadow);
 transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item[open]{border-color:#bcd9e5;box-shadow:0 10px 26px rgba(10,40,58,.1);}
.faq-item summary{
 cursor:pointer;list-style:none;padding:16px 0;
 font-weight:700;font-size:15px;color:var(--deep);
 display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-size:20px;line-height:1;color:var(--brand);font-weight:700;}
.faq-item[open] summary::after{content:"–";}
.faq-item p{padding:0 0 18px;font-size:14.5px;line-height:1.85;color:var(--ink-2);}

/* ---------- CTA ---------- */
.cta-wrap{padding:0 0 66px;}
.cta-panel{
 position:relative;overflow:hidden;
 background:linear-gradient(160deg,var(--deep-2) 0%,var(--deep) 100%);
 border-radius:20px;padding:44px;
 display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;
 color:#e8f4f9;box-shadow:var(--shadow-lg);
 border:1px solid rgba(255,255,255,.08);
}
.cta-panel::before{
 content:"";position:absolute;width:360px;height:360px;border-radius:50%;
 background:radial-gradient(circle,rgba(18,121,160,.5),transparent 70%);
 right:-100px;top:-130px;
}
.cta-text{position:relative;z-index:2;}
.cta-text h2{font-size:27px;font-weight:800;color:#fff;line-height:1.42;letter-spacing:-.3px;}
.cta-text h2 em{font-style:normal;color:#ffca7a;}
.cta-text p{margin-top:14px;font-size:14.5px;line-height:1.88;color:#b6d3e0;max-width:460px;}
.cta-points{margin-top:18px;display:flex;flex-wrap:wrap;gap:10px;}
.cta-points span{
 font-size:12.5px;font-weight:700;color:#d3e8f1;
 background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.18);
 border-radius:999px;padding:5px 12px;
}
.cta-form{position:relative;z-index:2;display:grid;gap:12px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.field label{display:block;font-size:12.5px;font-weight:700;color:#9dc2d2;margin-bottom:6px;}
.field input,.field select{
 width:100%;height:44px;border-radius:9px;
 border:1px solid rgba(255,255,255,.22);
 background:rgba(255,255,255,.09);
 color:#fff;padding:0 14px;font-size:14px;outline:none;
 transition:border-color var(--ease),background var(--ease),box-shadow var(--ease);
}
.field input::placeholder{color:#82a4b5;}
.field select option{color:#0d1b26;background:#fff;}
.field input:focus,.field select:focus{
 border-color:var(--accent);background:rgba(255,255,255,.15);
 box-shadow:0 0 0 3px rgba(242,166,59,.18);
}
.form-tip{font-size:12.5px;color:#8fb2c2;line-height:1.7;}
.form-msg{display:none;font-size:13px;font-weight:700;color:#ffca7a;}
.form-msg.show{display:block;}

/* ---------- Footer ---------- */
.site-footer{background:var(--deep);color:#b8d2de;padding:56px 0 0;}
.footer-grid{
 display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:40px;
 padding-bottom:38px;border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand{
 display:flex;align-items:center;gap:10px;
 font-size:17px;font-weight:800;color:#fff;margin-bottom:14px;
}
.footer-brand .logo-mark{width:32px;height:32px;border-radius:9px;}
.footer-desc{font-size:13.5px;line-height:1.9;color:#8fb2c2;max-width:380px;}
.footer-col h5{font-size:14px;font-weight:800;color:#fff;margin-bottom:14px;}
.footer-col ul li{margin-bottom:9px;}
.footer-col ul li a{font-size:13.5px;color:#9dbecd;transition:color var(--ease);line-height:1.6;display:inline-block;}
.footer-col ul li a:hover{color:var(--accent);}
.footer-bottom{
 display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
 padding:20px 0 26px;font-size:12.5px;color:#7493a3;
}
.footer-bottom b{color:#a7c6d4;}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
 .cat-hero-inner{grid-template-columns:1fr;gap:34px;}
 .cat-hero h1{font-size:34px;}
 .ring-card{max-width:520px;}
 .phase-grid{grid-template-columns:repeat(2,1fr);}
 .scene-grid{grid-template-columns:repeat(2,1fr);}
 .assure-grid{grid-template-columns:repeat(2,1fr);}
 .post-grid{grid-template-columns:repeat(2,1fr);}
 .timeline{grid-template-columns:repeat(2,1fr);gap:26px;}
 .timeline::before{display:none;}
 .cta-panel{grid-template-columns:1fr;gap:30px;padding:36px;}
 .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:768px){
 .nav-toggle{display:flex;}
 .main-nav{
  position:absolute;top:64px;left:0;right:0;
  flex-direction:column;align-items:stretch;gap:2px;
  background:#fff;border-bottom:1px solid var(--line);
  box-shadow:0 14px 26px rgba(10,40,58,.14);
  padding:10px 16px 14px;display:none;
 }
 .main-nav.open{display:flex;}
 .nav-link{height:44px;justify-content:flex-start;}
 .nav-right .btn-sm{height:36px;padding:0 12px;font-size:13px;}
 .section{padding:48px 0;}
 .cat-hero{padding:46px 0 66px;}
 .cat-hero h1{font-size:29px;}
 .hero-lead{font-size:14.5px;}
 .sec-head h2{font-size:22px;}
 .metric-card{grid-template-columns:repeat(2,1fr);padding:18px 6px;row-gap:16px;}
 .metric-item:nth-child(2){border-right:0;}
 .metric-item:nth-child(1),.metric-item:nth-child(2){border-bottom:1px solid var(--line);padding-bottom:16px;}
 .compare-grid{grid-template-columns:1fr;}
 .form-row{grid-template-columns:1fr;}
 .cta-text h2{font-size:22px;}
 .footer-grid{grid-template-columns:1fr;gap:26px;}
 .btn{height:44px;padding:0 20px;font-size:14.5px;}
}
@media (max-width:520px){
 .container{padding:0 16px;}
 .cat-hero h1{font-size:25px;}
 .ring-wrap{flex-direction:column;align-items:flex-start;gap:14px;}
 .ring-card{max-width:none;}
 .phase-grid,.scene-grid,.assure-grid,.post-grid,.timeline{grid-template-columns:1fr;}
 .metric-card{grid-template-columns:1fr;}
 .metric-item{border-right:0;border-bottom:1px solid var(--line);padding-bottom:14px;}
 .metric-item:last-child{border-bottom:0;padding-bottom:0;}
 .hero-actions .btn{width:100%;}
 .cta-panel{padding:26px 20px;border-radius:16px;}
 .footer-bottom{flex-direction:column;gap:6px;}
}

/* roulang page: category2 */
:root{
  --ink:#0d1b26;
  --ink-2:#1d3446;
  --deep:#06202d;
  --deep-2:#0a3143;
  --deep-3:#0e4257;
  --brand:#1279a0;
  --brand-deep:#0b5b7a;
  --accent:#f2a63b;
  --accent-deep:#d7860f;
  --bg:#f3f8fa;
  --bg-alt:#ffffff;
  --line:#dbe7ee;
  --muted:#5b7484;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 2px 12px rgba(10,40,58,.06);
  --shadow-lg:0 14px 34px rgba(10,40,58,.13);
  --ease:.2s ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:15px;
  line-height:1.78;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;border-radius:var(--radius-sm);}
button{font-family:inherit;cursor:pointer;}
input{font-family:inherit;}
ul{list-style:none;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 22px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-stuck{box-shadow:0 6px 22px rgba(10,40,58,.09);}
.nav-wrap{height:64px;display:flex;align-items:center;justify-content:space-between;gap:18px;position:relative;}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:.2px;color:var(--deep);white-space:nowrap;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(140deg,var(--brand) 0%,var(--deep-3) 100%);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(18,121,160,.32);
  flex:0 0 auto;
}
.logo-mark svg{width:19px;height:19px;stroke:#fff;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}
.logo-text{font-size:17px;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:9px;
  font-size:14.5px;font-weight:600;color:var(--ink-2);
  transition:background var(--ease),color var(--ease);white-space:nowrap;
}
.nav-link:hover{background:#eaf4f8;color:var(--brand-deep);}
.nav-link.active{background:#e3f1f7;color:var(--brand-deep);}
.nav-right{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;
}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink-2);fill:none;stroke-width:2;stroke-linecap:round;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  height:46px;padding:0 24px;border-radius:9px;
  font-size:15px;font-weight:700;border:1px solid transparent;
  transition:transform var(--ease),background var(--ease),box-shadow var(--ease),border-color var(--ease),color var(--ease);
  white-space:nowrap;
}
.btn svg{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(18,121,160,.28);}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-2px);box-shadow:0 10px 22px rgba(18,121,160,.34);}
.btn-accent{background:var(--accent);color:#3a2404;box-shadow:0 6px 16px rgba(242,166,59,.34);}
.btn-accent:hover{background:var(--accent-deep);color:#fff;transform:translateY(-2px);}
.btn-ghost{background:rgba(255,255,255,.1);color:#eaf6fb;border-color:rgba(255,255,255,.42);}
.btn-ghost:hover{background:rgba(255,255,255,.2);transform:translateY(-2px);}
.btn-outline{background:#fff;color:var(--brand-deep);border-color:#bcd9e5;}
.btn-outline:hover{border-color:var(--brand);background:#f0f8fb;transform:translateY(-2px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:8px;}
.btn:focus-visible,.nav-link:focus-visible{outline:3px solid rgba(242,166,59,.55);outline-offset:2px;}

/* ---------- Category Hero ---------- */
.cat-hero{position:relative;overflow:hidden;background:var(--deep);color:#e8f4f9;padding:56px 0 62px;}
.cat-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.26;}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(72% 96% at 8% 12%,rgba(18,121,160,.52) 0%,rgba(6,32,45,.14) 56%,rgba(6,32,45,.94) 100%),
             linear-gradient(180deg,rgba(6,32,45,.6) 0%,rgba(6,32,45,.93) 100%);
}
.cat-hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.3fr .9fr;gap:46px;align-items:center;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:999px;
  background:rgba(242,166,59,.16);border:1px solid rgba(242,166,59,.5);
  color:#ffd79a;font-size:13px;font-weight:700;letter-spacing:.6px;
}
.hero-tag::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(242,166,59,.18);}
.cat-hero-title{
  margin:20px 0 0;font-size:40px;line-height:1.3;font-weight:800;letter-spacing:-.4px;color:#fff;
  text-shadow:0 2px 18px rgba(0,0,0,.35);
}
.cat-hero-title em{font-style:normal;color:#ffca7a;}
.cat-hero-lead{margin:18px 0 0;max-width:600px;font-size:15.5px;line-height:1.9;color:#c3dce7;}
.cat-hero-tags{margin-top:24px;display:flex;flex-wrap:wrap;gap:10px;}
.pill{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  font-size:13px;font-weight:600;background:rgba(255,255,255,.09);
  border:1px solid rgba(255,255,255,.2);color:#d3e8f1;
}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:12px;}

/* Ladder panel */
.ladder-card{
  background:linear-gradient(160deg,rgba(14,66,87,.94) 0%,rgba(6,32,45,.97) 100%);
  border:1px solid rgba(255,255,255,.16);
  border-radius:18px;padding:24px 22px;box-shadow:0 22px 46px rgba(0,0,0,.36);
}
.ladder-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:18px;}
.ladder-head h2{margin:0;font-size:16px;font-weight:800;color:#fff;}
.ladder-badge{font-size:12px;font-weight:800;color:#3a2404;background:var(--accent);padding:3px 10px;border-radius:999px;}
.ladder-row{margin-bottom:13px;}
.ladder-row:last-child{margin-bottom:0;}
.ladder-meta{display:flex;justify-content:space-between;font-size:12.5px;color:#a8c8d6;margin-bottom:6px;}
.ladder-meta b{color:#fff;font-weight:700;}
.ladder-bar{height:8px;border-radius:999px;background:rgba(255,255,255,.1);overflow:hidden;}
.ladder-bar span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand) 0%,var(--accent) 100%);}

/* ---------- Metric strip ---------- */
.metric-strip{background:var(--bg-alt);border-bottom:1px solid var(--line);}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:28px 0;}
.metric{
  border-left:3px solid var(--accent);padding:4px 0 4px 14px;
}
.metric strong{display:block;font-size:24px;font-weight:800;color:var(--deep);line-height:1.3;}
.metric span{display:block;font-size:13px;color:var(--muted);margin-top:4px;}

/* ---------- Sections ---------- */
.section{padding:64px 0;}
.section-alt{background:var(--bg-alt);}
.section-dark{background:linear-gradient(160deg,var(--deep-2) 0%,var(--deep) 100%);color:#dcecf4;}
.sec-head{max-width:760px;margin-bottom:34px;}
.sec-kicker{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:800;letter-spacing:1.6px;color:var(--brand);}
.sec-kicker::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px;}
.sec-title{margin:10px 0 0;font-size:27px;line-height:1.38;font-weight:800;color:var(--deep);letter-spacing:-.2px;}
.sec-desc{margin:12px 0 0;color:var(--muted);font-size:14.5px;line-height:1.85;}
.section-dark .sec-title{color:#fff;}
.section-dark .sec-desc{color:#a8c8d6;}
.section-dark .sec-kicker{color:#7fc4dd;}

/* ---------- Grids & cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#bcd9e5;}
.card h3{margin:10px 0 0;font-size:17px;font-weight:800;color:var(--deep);line-height:1.45;}
.card p{margin:9px 0 0;font-size:14px;line-height:1.8;color:var(--muted);}
.card-tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:700;background:#e8f4f9;color:var(--brand-deep);
}
.card-tag.accent{background:rgba(242,166,59,.16);color:#9a5c05;}
.card-fig{margin:0;border-radius:var(--radius-sm);overflow:hidden;}
.card-fig img{width:100%;height:170px;object-fit:cover;border-radius:var(--radius-sm);transition:transform .35s ease;}
.card:hover .card-fig img{transform:scale(1.04);}
.card-fig{margin-bottom:14px;}

/* tier card */
.tier-card{position:relative;}
.tier-top{display:flex;align-items:center;justify-content:space-between;gap:10px;}
.tier-range{font-size:22px;font-weight:800;color:var(--deep);line-height:1.2;}
.tier-cost{font-size:12.5px;font-weight:700;color:var(--brand-deep);background:#e8f4f9;padding:3px 10px;border-radius:999px;}
.tier-list{margin:12px 0 0;padding:0;}
.tier-list li{position:relative;padding-left:16px;font-size:13.5px;color:var(--muted);line-height:1.85;}
.tier-list li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--accent);}

/* ---------- Table ---------- */
.table-scroll{overflow-x:auto;border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--line);background:#fff;}
.rate-table{width:100%;border-collapse:collapse;min-width:680px;}
.rate-table thead th{
  background:var(--deep-2);color:#dcecf4;font-size:13.5px;font-weight:700;
  text-align:left;padding:14px 16px;white-space:nowrap;
}
.rate-table tbody td{padding:14px 16px;border-bottom:1px solid var(--line);font-size:14px;color:var(--ink-2);vertical-align:top;}
.rate-table tbody tr:last-child td{border-bottom:0;}
.rate-table tbody tr:hover td{background:#f4fafc;}
.rate-table b{color:var(--brand-deep);}
.rate-mult{font-weight:800;color:var(--accent-deep);}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 20px;box-shadow:var(--shadow);position:relative;
  transition:transform var(--ease),box-shadow var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border-radius:9px;font-size:14px;font-weight:800;
  color:#fff;background:linear-gradient(140deg,var(--brand),var(--deep-3));
  box-shadow:0 4px 12px rgba(18,121,160,.28);
}
.step h3{margin:12px 0 0;font-size:16px;font-weight:800;color:var(--deep);}
.step p{margin:8px 0 0;font-size:13.5px;color:var(--muted);line-height:1.8;}

/* ---------- Timeline ---------- */
.timeline{position:relative;padding-left:28px;}
.timeline::before{
  content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--brand) 0%,rgba(18,121,160,.14) 100%);
}
.tl-item{position:relative;margin-bottom:24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow);}
.tl-item:last-child{margin-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-24px;top:24px;width:10px;height:10px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 0 4px rgba(242,166,59,.2);
}
.tl-year{font-size:12.5px;font-weight:800;letter-spacing:1px;color:var(--brand);}
.tl-item h3{margin:6px 0 0;font-size:16px;font-weight:800;color:var(--deep);}
.tl-item p{margin:8px 0 0;font-size:14px;color:var(--muted);line-height:1.8;}

/* ---------- Post list ---------- */
.post-list{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.post-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#bcd9e5;}
.post-meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:12px;color:var(--muted);margin-bottom:10px;}
.post-meta .card-tag{font-size:11.5px;height:22px;}
.post-card h3{margin:0;font-size:16px;font-weight:800;color:var(--deep);line-height:1.55;}
.post-card p{margin:9px 0 0;font-size:13.5px;color:var(--muted);line-height:1.8;}
.post-more{margin-top:16px;font-size:13px;font-weight:700;color:var(--brand-deep);display:inline-flex;align-items:center;gap:6px;}
.post-card:hover .post-more{color:var(--accent-deep);}

/* ---------- FAQ ---------- */
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:16px 20px;margin-bottom:12px;box-shadow:var(--shadow);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item:hover{border-color:#bcd9e5;}
.faq-item summary{
  list-style:none;cursor:pointer;font-weight:700;color:var(--deep);font-size:15px;
  display:flex;justify-content:space-between;align-items:flex-start;gap:14px;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";color:var(--brand);font-weight:800;font-size:20px;line-height:1;flex:0 0 auto;}
.faq-item[open] summary::after{content:"−";}
.faq-item p{margin:12px 0 0;font-size:14px;color:var(--muted);line-height:1.85;}

/* ---------- CTA band ---------- */
.cta-band{
  background:linear-gradient(135deg,var(--deep-2) 0%,var(--deep-3) 100%);
  border-radius:18px;padding:38px 36px;color:#e8f4f9;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  box-shadow:0 18px 40px rgba(6,32,45,.24);
}
.cta-band h2{margin:0;font-size:24px;font-weight:800;color:#fff;line-height:1.4;}
.cta-band p{margin:10px 0 0;font-size:14.5px;color:#b6d3df;max-width:600px;line-height:1.85;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- Footer ---------- */
.site-footer{background:var(--deep);color:#a9c6d4;padding:52px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1.2fr;gap:34px;padding-bottom:34px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:16px;}
.footer-desc{margin:14px 0 0;font-size:14px;line-height:1.85;color:#8fb0c0;max-width:400px;}
.footer-col h5{color:#fff;font-size:14px;font-weight:700;margin:0 0 14px;}
.footer-col ul{margin:0;padding:0;}
.footer-col li{margin-bottom:9px;font-size:14px;line-height:1.7;}
.footer-col a{color:#8fb0c0;transition:color var(--ease);}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:18px 0 22px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:#7d9dae;
}
.footer-bottom b{color:#c9e2ee;font-weight:700;}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .cat-hero-inner{grid-template-columns:1fr;gap:32px;}
  .cat-hero-title{font-size:34px;}
  .metric-grid{grid-template-columns:repeat(2,1fr);gap:16px;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .post-list{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:900px){
  .main-nav{
    position:absolute;top:64px;left:0;right:0;z-index:90;
    background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:2px;
    padding:8px 16px 14px;display:none;box-shadow:0 16px 30px rgba(10,40,58,.12);
  }
  .main-nav.is-open{display:flex;}
  .nav-link{height:44px;justify-content:flex-start;}
  .nav-toggle{display:inline-flex;}
  .nav-right .btn-sm{display:none;}
}
@media (max-width:768px){
  .section{padding:48px 0;}
  .cat-hero{padding:42px 0 48px;}
  .cat-hero-title{font-size:29px;}
  .sec-title{font-size:23px;}
  .grid-2{grid-template-columns:1fr;}
  .cta-band{padding:28px 24px;}
  .cta-band h2{font-size:20px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .cta-actions .btn{flex:1 1 auto;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .cat-hero-title{font-size:25px;}
  .cat-hero-lead{font-size:14.5px;}
  .metric-grid{grid-template-columns:1fr;gap:12px;}
  .grid-3,.grid-4,.steps,.post-list{grid-template-columns:1fr;}
  .logo-text{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category3 */
:root{
  --ink:#0d1b26;
  --ink-2:#1d3446;
  --deep:#06202d;
  --deep-2:#0a3143;
  --deep-3:#0e4257;
  --brand:#1279a0;
  --brand-deep:#0b5b7a;
  --accent:#f2a63b;
  --accent-deep:#d7860f;
  --bg:#f3f8fa;
  --bg-alt:#ffffff;
  --line:#dbe7ee;
  --muted:#5b7484;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 2px 12px rgba(10,40,58,.06);
  --shadow-lg:0 14px 34px rgba(10,40,58,.13);
  --ease:.2s ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
html body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:15px;line-height:1.78;color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;border-radius:var(--radius-sm);}
button{font-family:inherit;cursor:pointer;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5,p{margin:0;}
:focus-visible{outline:3px solid rgba(18,121,160,.45);outline-offset:2px;border-radius:8px;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 22px;}
section[id],div[id]{scroll-margin-top:84px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-stuck{box-shadow:0 6px 22px rgba(10,40,58,.09);}
.nav-wrap{height:64px;display:flex;align-items:center;justify-content:space-between;gap:18px;}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:.2px;color:var(--deep);white-space:nowrap;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(140deg,var(--brand) 0%,var(--deep-3) 100%);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(18,121,160,.32);flex:0 0 auto;
}
.logo-mark svg{width:19px;height:19px;stroke:#fff;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:9px;
  font-size:14.5px;font-weight:600;color:var(--ink-2);
  transition:background var(--ease),color var(--ease);white-space:nowrap;
}
.nav-link:hover{background:#eaf4f8;color:var(--brand-deep);}
.nav-link.active{background:#e3f1f7;color:var(--brand-deep);}
.nav-right{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;
}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink-2);fill:none;stroke-width:2;stroke-linecap:round;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  height:46px;padding:0 24px;border-radius:9px;
  font-size:15px;font-weight:700;border:1px solid transparent;
  transition:transform var(--ease),background var(--ease),box-shadow var(--ease),border-color var(--ease),color var(--ease);
  white-space:nowrap;
}
.btn svg{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(18,121,160,.28);}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-2px);box-shadow:0 10px 22px rgba(18,121,160,.34);}
.btn-accent{background:var(--accent);color:#3a2404;box-shadow:0 6px 16px rgba(242,166,59,.34);}
.btn-accent:hover{background:var(--accent-deep);color:#fff;transform:translateY(-2px);}
.btn-ghost{background:rgba(255,255,255,.1);color:#eaf6fb;border-color:rgba(255,255,255,.42);}
.btn-ghost:hover{background:rgba(255,255,255,.2);transform:translateY(-2px);}
.btn-outline{background:#fff;color:var(--brand-deep);border-color:#bcd9e5;}
.btn-outline:hover{border-color:var(--brand);background:#f0f8fb;transform:translateY(-2px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:8px;}

/* ---------- Category Hero ---------- */
.cat-hero{position:relative;overflow:hidden;background:var(--deep);color:#e8f4f9;padding:56px 0 68px;}
.cat-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.28;}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(72% 92% at 8% 12%,rgba(18,121,160,.5) 0%,rgba(6,32,45,.12) 56%,rgba(6,32,45,.92) 100%),
             linear-gradient(180deg,rgba(6,32,45,.5) 0%,rgba(6,32,45,.92) 100%);
}
.cat-hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.14fr .86fr;gap:46px;align-items:center;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#9dc0cf;}
.crumb a{color:#c8e2ec;}
.crumb a:hover{color:#fff;}
.crumb span{opacity:.65;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:999px;
  background:rgba(242,166,59,.16);border:1px solid rgba(242,166,59,.5);
  color:#ffd79a;font-size:13px;font-weight:700;letter-spacing:.6px;margin-top:18px;
}
.hero-tag::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(242,166,59,.18);}
.cat-hero h1{
  margin-top:16px;font-size:38px;line-height:1.3;font-weight:800;letter-spacing:-.4px;color:#fff;
  text-shadow:0 2px 18px rgba(0,0,0,.35);
}
.cat-hero h1 em{font-style:normal;color:#ffca7a;}
.hero-lead{margin-top:18px;max-width:640px;font-size:15.5px;line-height:1.9;color:#c3dce7;}
.hero-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px;}
.hero-tags{margin-top:24px;display:flex;flex-wrap:wrap;gap:10px;}
.pill{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  font-size:13px;font-weight:600;background:rgba(255,255,255,.09);
  border:1px solid rgba(255,255,255,.2);color:#d3e8f1;
}
.pick-card{
  background:linear-gradient(165deg,#ffffff 0%,#f2f9fc 100%);
  border:1px solid rgba(255,255,255,.7);
  border-radius:18px;padding:24px 24px 22px;
  box-shadow:0 24px 50px rgba(0,0,0,.38);
  color:var(--ink);
}
.pick-top{display:flex;align-items:center;justify-content:space-between;gap:10px;}
.pick-badge{
  font-size:12px;font-weight:800;color:#3a2404;background:var(--accent);
  padding:4px 11px;border-radius:999px;letter-spacing:.4px;
}
.pick-ver{font-size:13px;font-weight:800;color:var(--brand-deep);letter-spacing:.6px;}
.pick-card h2{margin-top:14px;font-size:19px;font-weight:800;color:var(--deep);line-height:1.4;letter-spacing:-.2px;}
.pick-sub{margin-top:8px;font-size:13.5px;color:var(--muted);line-height:1.75;}
.pick-spec{margin-top:16px;display:grid;gap:1px;background:var(--line);border-radius:10px;overflow:hidden;border:1px solid var(--line);}
.pick-spec li{display:flex;align-items:center;justify-content:space-between;gap:12px;background:#fff;padding:10px 13px;font-size:13.5px;}
.pick-spec li span{color:var(--muted);}
.pick-spec li b{color:var(--ink-2);font-weight:700;text-align:right;}
.pick-card .btn{width:100%;margin-top:16px;}
.pick-note{margin-top:10px;font-size:12.5px;color:var(--muted);text-align:center;}

/* ---------- Sections ---------- */
.section{padding:64px 0;}
.section-alt{background:var(--bg-alt);}
.section-dark{background:linear-gradient(162deg,#06202d 0%,#0a3143 58%,#0e4257 100%);color:#dcecf3;}
.section-head{max-width:780px;margin-bottom:34px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:800;letter-spacing:1.4px;color:var(--brand-deep);}
.eyebrow::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--accent);}
.section-dark .eyebrow{color:#8fc4d8;}
.section-title{font-size:27px;line-height:1.38;font-weight:800;color:var(--ink);margin-top:12px;letter-spacing:-.2px;}
.section-dark .section-title{color:#fff;}
.section-desc{margin-top:10px;font-size:15px;line-height:1.82;color:var(--muted);}
.section-dark .section-desc{color:#a9c8d6;}

/* ---------- Stats board ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.stat{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 20px;box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.stat:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#bcd9e5;}
.stat b{display:block;font-size:30px;line-height:1.2;font-weight:800;color:var(--brand-deep);letter-spacing:-.5px;}
.stat b span{font-size:15px;font-weight:700;margin-left:3px;color:var(--ink-2);}
.stat p{margin-top:8px;font-size:13.5px;color:var(--muted);line-height:1.7;}

/* ---------- Version matrix cards ---------- */
.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:20px;}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:22px;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#bcd9e5;}
.card-icon{
  width:40px;height:40px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:#e6f3f8;border:1px solid #cfe6ef;margin-bottom:14px;
}
.card-icon svg{width:20px;height:20px;stroke:var(--brand-deep);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.card h3{font-size:16.5px;font-weight:800;color:var(--ink);line-height:1.45;}
.card p{margin-top:9px;font-size:14px;color:var(--muted);line-height:1.8;}
.tags{margin-top:14px;display:flex;flex-wrap:wrap;gap:7px;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:7px;
  font-size:12.5px;font-weight:700;background:#f0f7fa;color:var(--brand-deep);border:1px solid #d8e9f1;
}
.tag-accent{background:#fdf3e3;color:#a96a09;border-color:#f4dfba;}

/* ---------- Compare ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:start;}
.compare-card{border-radius:var(--radius);padding:24px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow);}
.compare-card.is-best{border-color:#9fd2e3;background:linear-gradient(170deg,#ffffff 0%,#f2fafd 100%);box-shadow:0 12px 30px rgba(18,121,160,.14);}
.compare-card h3{display:flex;align-items:center;gap:9px;font-size:17px;font-weight:800;color:var(--ink);}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:800;background:#eef3f7;color:#5b7484;
}
.compare-card.is-best .badge{background:var(--accent);color:#3a2404;}
.compare-list{margin-top:16px;display:grid;gap:12px;}
.compare-list li{position:relative;padding-left:26px;font-size:14px;color:var(--ink-2);line-height:1.75;}
.compare-list li::before{
  content:"";position:absolute;left:0;top:7px;width:14px;height:14px;border-radius:50%;
  background:#e8eff4;
}
.compare-card.is-best .compare-list li::before{background:#d5edf6;box-shadow:inset 0 0 0 4px #a9d9ea;}
.compare-list li b{color:var(--ink);}
.compare-figure{margin-top:18px;overflow:hidden;border-radius:var(--radius-sm);border:1px solid var(--line);}
.compare-figure img{width:100%;height:190px;object-fit:cover;border-radius:0;}

/* ---------- Timeline ---------- */
.timeline{position:relative;margin-top:8px;padding-left:26px;}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,rgba(242,166,59,.85),rgba(255,255,255,.12));border-radius:2px;}
.tl-item{position:relative;padding:0 0 26px 6px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-25px;top:6px;width:14px;height:14px;border-radius:50%;
  background:var(--deep);border:3px solid var(--accent);box-shadow:0 0 0 4px rgba(242,166,59,.14);
}
.tl-ver{font-size:13px;font-weight:800;letter-spacing:.8px;color:#ffca7a;}
.tl-item h3{margin-top:6px;font-size:16.5px;font-weight:800;color:#fff;line-height:1.45;}
.tl-item p{margin-top:7px;font-size:14px;color:#a9c8d6;line-height:1.8;max-width:760px;}

/* ---------- News list ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.news-card{
  display:flex;flex-direction:column;gap:8px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#bcd9e5;}
.news-cat{align-self:flex-start;font-size:12px;font-weight:800;color:var(--brand-deep);background:#eef7fb;border:1px solid #d8e9f1;padding:2px 9px;border-radius:6px;}
.news-card h3{font-size:15.5px;font-weight:800;color:var(--ink);line-height:1.5;}
.news-card p{font-size:13.5px;color:var(--muted);line-height:1.75;}
.news-time{margin-top:auto;padding-top:8px;font-size:12.5px;color:#8ba4b2;border-top:1px dashed var(--line);}
.empty-note{
  background:#fff;border:1px dashed #c6dde7;border-radius:var(--radius);
  padding:26px;text-align:center;font-size:14px;color:var(--muted);
}

/* ---------- Check list ---------- */
.check-item{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);transition:transform var(--ease),box-shadow var(--ease);}
.check-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);}
.check-num{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;background:#e6f3f8;color:var(--brand-deep);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;
}
.check-item h3{font-size:15.5px;font-weight:800;color:var(--ink);}
.check-item p{margin-top:6px;font-size:13.5px;color:var(--muted);line-height:1.75;}

/* ---------- Guard grid ---------- */
.guard{display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);transition:transform var(--ease),box-shadow var(--ease);}
.guard:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);}
.guard .card-icon{margin-bottom:0;flex:0 0 auto;}
.guard h3{font-size:15.5px;font-weight:800;color:var(--ink);}
.guard p{margin-top:6px;font-size:13.5px;color:var(--muted);line-height:1.75;}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;gap:12px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease);}
.faq-item[open]{border-color:#bcd9e5;box-shadow:var(--shadow-lg);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:16px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  font-size:15.5px;font-weight:700;color:var(--ink);transition:color var(--ease);
}
.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;flex:0 0 auto;}
.faq-item[open] summary::after{content:"−";color:var(--brand-deep);}
.faq-item summary:hover{color:var(--brand-deep);}
.faq-body{padding:0 20px 18px;font-size:14px;color:var(--muted);line-height:1.85;}

/* ---------- CTA form ---------- */
.cta-panel{
  display:grid;grid-template-columns:.95fr 1.05fr;gap:36px;
  background:linear-gradient(158deg,#06202d 0%,#0b3a4d 62%,#0e4257 100%);
  border-radius:18px;padding:38px;color:#e8f4f9;
  box-shadow:0 22px 46px rgba(6,32,45,.28);
}
.cta-panel h2{font-size:25px;line-height:1.4;font-weight:800;color:#fff;letter-spacing:-.2px;}
.cta-panel .cta-text{margin-top:12px;font-size:14.5px;line-height:1.85;color:#b6d3e0;}
.cta-points{margin-top:18px;display:grid;gap:9px;}
.cta-points li{position:relative;padding-left:22px;font-size:13.8px;color:#cfe6ef;}
.cta-points li::before{content:"";position:absolute;left:0;top:8px;width:8px;height:8px;border-radius:2px;background:var(--accent);}
.subscribe-form{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:14px;padding:22px;}
.field{margin-bottom:14px;}
.field label{display:block;font-size:13px;font-weight:700;color:#cfe6ef;margin-bottom:7px;}
.field input,.field select{
  width:100%;height:44px;padding:0 13px;border-radius:9px;
  background:#fff;border:1px solid #cfe1ea;color:var(--ink);font-size:14px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field input:focus,.field select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(18,121,160,.22);}
.field input::placeholder{color:#93aab8;}
.subscribe-form .btn{width:100%;margin-top:4px;}
.form-msg{margin-top:12px;font-size:13px;color:#ffca7a;min-height:18px;}
.form-hint{margin-top:10px;font-size:12.5px;color:#9dbecd;line-height:1.7;}

/* ---------- Footer ---------- */
.site-footer{background:#06202d;color:#b9d3df;padding:52px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr .8fr 1.2fr;gap:38px;padding-bottom:38px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:16.5px;color:#fff;}
.footer-desc{margin-top:14px;font-size:14px;line-height:1.85;color:#93b2c2;max-width:380px;}
.footer-col h5{margin:0 0 14px;font-size:14px;font-weight:800;color:#fff;letter-spacing:.4px;}
.footer-col ul{display:grid;gap:9px;}
.footer-col a{font-size:14px;color:#9fbccb;transition:color var(--ease);}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:18px 0 22px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:#7f9dad;
}
.footer-bottom b{color:#cfe5ef;}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .cat-hero-inner{grid-template-columns:1fr;gap:32px;}
  .cat-hero h1{font-size:32px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .cta-panel{grid-template-columns:1fr;padding:30px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:900px){
  .main-nav{
    position:absolute;top:64px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;
    background:#fff;padding:12px 18px 18px;
    border-bottom:1px solid var(--line);
    box-shadow:0 16px 30px rgba(10,40,58,.14);
    display:none;
  }
  .main-nav.open{display:flex;}
  .nav-link{height:44px;justify-content:flex-start;}
  .nav-toggle{display:inline-flex;}
  .nav-right .btn-primary{display:none;}
}
@media (max-width:768px){
  .section{padding:48px 0;}
  .cat-hero{padding:40px 0 52px;}
  .cat-hero h1{font-size:27px;line-height:1.36;}
  .hero-lead{font-size:14.5px;}
  .section-title{font-size:22px;}
  .compare-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .compare-figure img{height:170px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .stat-grid{grid-template-columns:1fr;}
  .grid-4,.grid-3,.grid-2{grid-template-columns:1fr;}
  .cat-hero h1{font-size:23px;}
  .btn{height:44px;padding:0 18px;font-size:14.5px;}
  .hero-actions .btn{flex:1 1 100%;}
  .pick-card{padding:20px 18px 18px;}
  .cta-panel{padding:22px 18px;}
  .footer-bottom{flex-direction:column;}
}