/* roulang page: index */
:root{
  --ink:#08222b;
  --ink-2:#0d3540;
  --ink-3:#124a52;
  --brand:#0fae8e;
  --brand-dark:#0a8a72;
  --brand-soft:#e7f7f3;
  --accent:#f5b942;
  --accent-soft:#fff5e0;
  --bg:#f4f8f8;
  --surface:#ffffff;
  --text:#15323c;
  --muted:#5f7883;
  --line:#dde8ea;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-sm:0 4px 14px rgba(10,45,55,.06);
  --shadow-md:0 14px 36px rgba(10,45,55,.10);
  --shadow-lg:0 26px 60px rgba(8,34,43,.18);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;}
a:hover{color:var(--brand-dark);}
img{max-width:100%;height:auto;display:block;}
h1,h2,h3,h4{margin:0;line-height:1.4;font-weight:700;color:var(--ink);letter-spacing:.2px;}
p{margin:0 0 14px;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:3px solid rgba(15,174,142,.45);outline-offset:2px;border-radius:6px;}

.site-wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 22px;}
.section{padding:72px 0;}
.section.alt{background:linear-gradient(180deg,#f9fcfb 0%,#eef6f5 100%);}
.section.dark{background:linear-gradient(150deg,#08222b 0%,#0d3a45 55%,#10514d 100%);color:#e7f4f2;}
.section.dark h2,.section.dark h3{color:#ffffff;}
.section.dark .lead{color:rgba(231,244,242,.82);}

.section-head{max-width:760px;margin-bottom:38px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.6px;
  color:var(--brand-dark);background:var(--brand-soft);
  padding:6px 14px;border-radius:999px;margin-bottom:14px;
}
.section.dark .eyebrow{background:rgba(255,255,255,.10);color:#8be5d2;}
.h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:14px;}
.lead{color:var(--muted);font-size:16px;line-height:1.85;margin:0;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:74px;}
.brand{display:flex;align-items:center;gap:11px;min-width:0;}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:linear-gradient(135deg,#0fae8e,#0b6f7d);
  color:#fff;display:grid;place-items:center;font-weight:800;font-size:18px;
  box-shadow:0 8px 18px rgba(15,174,142,.30);
}
.brand-text{font-weight:800;font-size:16px;color:var(--ink);line-height:1.2;min-width:0;}
.brand-text small{display:block;font-size:11.5px;font-weight:500;color:var(--muted);letter-spacing:.4px;margin-top:3px;}
.site-nav{display:flex;align-items:center;gap:4px;}
.site-nav a{
  padding:9px 15px;border-radius:999px;font-size:15px;font-weight:600;color:#31505b;white-space:nowrap;
}
.site-nav a:hover{background:#eef7f5;color:var(--brand-dark);}
.site-nav a.active{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(15,174,142,.28);}
.nav-actions{display:flex;align-items:center;gap:10px;}
.nav-badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;color:#8a5b00;
  background:var(--accent-soft);border:1px solid #f2dcae;
  padding:5px 11px;border-radius:999px;white-space:nowrap;
}
.nav-badge i{color:var(--accent);}
.nav-cta{
  display:inline-flex;align-items:center;gap:7px;
  background:var(--ink);color:#fff;font-weight:600;font-size:14.5px;
  padding:10px 18px;border-radius:999px;white-space:nowrap;
  box-shadow:0 8px 20px rgba(8,34,43,.20);
}
.nav-cta:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--ink);font-size:17px;
}
.nav-toggle:hover{background:#f2f8f7;}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#eaf6f4;
  background:
    radial-gradient(circle at 12% 18%,rgba(15,174,142,.36),transparent 46%),
    radial-gradient(circle at 86% 8%,rgba(245,185,66,.22),transparent 44%),
    linear-gradient(158deg,#072028 0%,#0d3a45 58%,#0f4f4a 100%);
  padding:78px 0 74px;
}
.hero::after{
  content:"";position:absolute;inset:auto -80px -160px auto;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(15,174,142,.26),transparent 68%);pointer-events:none;
}
.hero-inner{position:relative;z-index:2;text-align:center;max-width:960px;margin:0 auto;}
.hero-kicker{
  display:inline-flex;align-items:center;gap:9px;
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.18);
  color:#a8eee0;font-size:13px;font-weight:600;letter-spacing:.5px;
  padding:7px 16px;border-radius:999px;margin-bottom:22px;
}
.hero-kicker .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(245,185,66,.22);}
.hero h1{
  color:#fff;font-size:clamp(26px,3.5vw,42px);line-height:1.36;
  margin:0 auto 20px;max-width:920px;letter-spacing:.3px;
}
.hero h1 .hl{color:#7fe7cf;}
.hero-lead{
  max-width:800px;margin:0 auto 30px;
  color:rgba(234,246,244,.86);font-size:16.5px;line-height:1.95;
}
.hero-search{
  display:flex;align-items:center;gap:10px;
  max-width:640px;margin:0 auto 20px;padding:8px;
  background:#fff;border-radius:999px;box-shadow:0 22px 48px rgba(0,0,0,.28);
}
.hero-search .search-icon{flex:0 0 auto;padding-left:16px;color:#89a3ac;font-size:16px;}
.hero-search input{
  flex:1 1 auto;min-width:0;border:0;outline:none;background:transparent;
  padding:13px 6px;font-size:15.5px;color:#12303d;
}
.hero-search input::placeholder{color:#93aab2;}
.btn-hero{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;
  background:linear-gradient(135deg,#0fae8e,#0a8a72);color:#fff;
  font-weight:700;font-size:15px;padding:12px 24px;border-radius:999px;
  box-shadow:0 10px 22px rgba(10,138,114,.35);
}
.btn-hero:hover{color:#fff;transform:translateY(-1px);box-shadow:0 14px 28px rgba(10,138,114,.45);}
.hero-hot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:9px;
  margin-bottom:32px;font-size:13.5px;color:rgba(234,246,244,.72);
}
.hero-hot a{
  color:#d9f4ee;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.16);
  padding:5px 13px;border-radius:999px;font-weight:500;
}
.hero-hot a:hover{background:rgba(15,174,142,.32);color:#fff;border-color:rgba(15,174,142,.5);}
.hero-points{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;
  max-width:820px;margin:0 auto;
}
.hero-point{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-md);padding:16px 18px;text-align:left;
}
.hero-point strong{display:block;color:#fff;font-size:15px;margin-bottom:5px;}
.hero-point span{color:rgba(234,246,244,.76);font-size:13.5px;line-height:1.7;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-weight:700;font-size:15px;padding:12px 24px;border-radius:999px;
  border:1px solid transparent;transition:all .22s ease;
}
.btn-primary{background:linear-gradient(135deg,#0fae8e,#0a8a72);color:#fff;box-shadow:0 10px 22px rgba(10,138,114,.28);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 30px rgba(10,138,114,.36);}
.btn-outline{background:#fff;border-color:var(--line);color:var(--ink);}
.btn-outline:hover{border-color:var(--brand);color:var(--brand-dark);transform:translateY(-2px);box-shadow:var(--shadow-sm);}
.btn-dark{background:var(--ink);color:#fff;}
.btn-dark:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);}

/* ---------- download ---------- */
.download-section{padding-top:0;margin-top:-46px;position:relative;z-index:5;}
.download-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-md);padding:34px clamp(20px,3vw,40px);
}
.download-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:26px;}
.download-head h2{font-size:clamp(20px,2.2vw,26px);}
.download-head p{margin:6px 0 0;color:var(--muted);font-size:14.5px;max-width:620px;}
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;}
.dl-card{
  display:flex;align-items:center;gap:14px;min-width:0;
  border:1px solid var(--line);border-radius:var(--radius-md);
  padding:16px 18px;background:#fbfdfd;transition:all .22s ease;
}
.dl-card:hover{transform:translateY(-3px);border-color:#b7e6dc;box-shadow:var(--shadow-sm);background:#fff;}
.dl-icon{
  flex:0 0 46px;width:46px;height:46px;border-radius:13px;display:grid;place-items:center;
  font-size:19px;color:#fff;background:linear-gradient(135deg,#0fae8e,#0a8a72);
}
.dl-card:nth-child(2) .dl-icon{background:linear-gradient(135deg,#3aa76d,#1f7f52);}
.dl-card:nth-child(3) .dl-icon{background:linear-gradient(135deg,#5b7fb8,#3a5687);}
.dl-info{min-width:0;flex:1 1 auto;}
.dl-info strong{display:block;font-size:15.5px;color:var(--ink);}
.dl-info span{display:block;font-size:13px;color:var(--muted);margin-top:3px;line-height:1.6;}
.dl-arrow{flex:0 0 auto;color:#9db4bb;font-size:14px;transition:transform .2s ease,color .2s ease;}
.dl-card:hover .dl-arrow{transform:translateX(3px);color:var(--brand);}
.dl-note{margin:18px 0 0;font-size:13px;color:var(--muted);line-height:1.8;}

/* ---------- grids & cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.grid-3 > *,.grid-2 > *,.grid-4 > *{min-width:0;}

.site-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 24px;transition:all .24s ease;height:100%;min-width:0;
}
.site-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#c8e9e1;}
.card-ico{
  width:46px;height:46px;border-radius:13px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand-dark);font-size:19px;margin-bottom:16px;
}
.site-card h3{font-size:17px;margin-bottom:9px;}
.site-card p{font-size:14.5px;color:var(--muted);line-height:1.8;margin:0;}
.site-card .tag-row{margin-top:14px;display:flex;flex-wrap:wrap;gap:7px;}
.mini-tag{
  font-size:12.5px;color:var(--brand-dark);background:var(--brand-soft);
  padding:3px 10px;border-radius:999px;font-weight:600;
}

.coverage-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);padding:22px;min-width:0;transition:all .22s ease;}
.coverage-card:hover{border-color:#bfe5dd;box-shadow:var(--shadow-sm);transform:translateY(-3px);}
.coverage-card .cc-top{display:flex;align-items:center;gap:10px;margin-bottom:10px;}
.coverage-card .cc-top i{color:var(--brand);font-size:17px;}
.coverage-card h3{font-size:16px;}
.coverage-card p{margin:0;font-size:14px;color:var(--muted);line-height:1.78;}

/* ---------- split panel ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:38px;align-items:center;}
.split > *{min-width:0;}
.split-list{display:grid;gap:14px;margin-top:22px;}
.split-item{display:flex;gap:13px;align-items:flex-start;}
.split-item i{
  flex:0 0 30px;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand-dark);font-size:13px;margin-top:2px;
}
.split-item strong{display:block;font-size:15px;color:var(--ink);margin-bottom:3px;}
.split-item span{font-size:14px;color:var(--muted);line-height:1.75;}

.device-panel{
  background:linear-gradient(158deg,#08222b,#0e4550 62%,#116055);
  border-radius:var(--radius-lg);padding:28px;color:#e5f4f1;box-shadow:var(--shadow-lg);
}
.device-panel .dp-title{font-size:14px;font-weight:700;color:#8be5d2;letter-spacing:.6px;margin-bottom:14px;}
.device-row{
  display:flex;align-items:center;gap:12px;padding:13px 14px;border-radius:12px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);margin-bottom:10px;min-width:0;
}
.device-row i{flex:0 0 auto;width:20px;text-align:center;color:#7fe7cf;}
.device-row strong{display:block;font-size:14.5px;color:#fff;}
.device-row span{display:block;font-size:12.5px;color:rgba(229,244,241,.72);margin-top:2px;}
.device-panel .dp-foot{
  margin-top:16px;padding-top:14px;border-top:1px dashed rgba(255,255,255,.18);
  font-size:12.5px;color:rgba(229,244,241,.7);line-height:1.75;
}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.step-card{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:26px 24px;min-width:0;
}
.step-num{
  display:inline-grid;place-items:center;width:36px;height:36px;border-radius:11px;
  background:var(--ink);color:#fff;font-weight:800;font-size:15px;margin-bottom:14px;
}
.step-card h3{font-size:16.5px;margin-bottom:8px;}
.step-card p{margin:0;font-size:14px;color:var(--muted);line-height:1.8;}

/* ---------- compare ---------- */
.compare-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);}
.compare-row{
  display:grid;grid-template-columns:1fr 1.25fr 1.25fr;gap:16px;
  padding:18px 24px;border-bottom:1px solid var(--line);align-items:center;
}
.compare-row:last-child{border-bottom:0;}
.compare-row.head{background:#f2f9f8;font-weight:700;font-size:14.5px;color:var(--ink);}
.compare-row.head .col-us{color:var(--brand-dark);}
.compare-row > div{min-width:0;font-size:14.5px;line-height:1.75;color:var(--muted);}
.compare-row > div:first-child{color:var(--ink);font-weight:600;}
.compare-row .col-us{color:#0b5f52;font-weight:600;background:rgba(15,174,142,.06);border-radius:10px;padding:6px 12px;}

/* ---------- channel entry ---------- */
.channel-card{
  display:flex;flex-direction:column;justify-content:space-between;gap:18px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 24px;height:100%;min-width:0;transition:all .24s ease;
}
.channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#bfe5dd;}
.channel-card h3{font-size:17px;margin-bottom:8px;}
.channel-card p{margin:0;font-size:14px;color:var(--muted);line-height:1.8;}
.channel-link{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:14.5px;color:var(--brand-dark);}
.channel-link:hover{color:var(--brand);gap:12px;}

/* ---------- knowledge ---------- */
.know-card{
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand);
  border-radius:var(--radius-md);padding:22px 22px 20px;min-width:0;transition:all .22s ease;
}
.know-card:hover{box-shadow:var(--shadow-sm);transform:translateY(-3px);}
.know-card h3{font-size:16px;margin-bottom:8px;}
.know-card p{margin:0;font-size:14px;color:var(--muted);line-height:1.8;}

/* ---------- tag cloud ---------- */
.tag-cloud{display:flex;flex-wrap:wrap;gap:11px;}
.tag-cloud a,.tag-cloud span{
  display:inline-flex;align-items:center;gap:7px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:9px 18px;font-size:14px;font-weight:600;color:#2c4b56;transition:all .2s ease;
}
.tag-cloud a:hover{background:var(--brand);border-color:var(--brand);color:#fff;transform:translateY(-2px);}

/* ---------- cms list ---------- */
.latest-layout{display:grid;grid-template-columns:1.6fr 1fr;gap:26px;align-items:start;}
.latest-layout > *{min-width:0;}
.latest-main{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.post-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:20px 20px 18px;min-width:0;display:flex;flex-direction:column;gap:8px;
  transition:all .22s ease;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#c8e9e1;}
.post-meta{display:flex;flex-wrap:wrap;gap:8px;font-size:12.5px;color:var(--muted);}
.post-meta .pm-cat{color:var(--brand-dark);background:var(--brand-soft);padding:2px 9px;border-radius:999px;font-weight:600;}
.post-card h3{font-size:16px;line-height:1.55;}
.post-card h3 a{color:var(--ink);}
.post-card h3 a:hover{color:var(--brand-dark);}
.post-card p{
  margin:0;font-size:13.8px;color:var(--muted);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.side-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-sm);}
.side-panel h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-panel h3 i{color:var(--accent);font-size:14px;}
.side-list{display:grid;gap:12px;}
.side-item{display:flex;gap:11px;align-items:flex-start;min-width:0;padding-bottom:12px;border-bottom:1px dashed var(--line);}
.side-item:last-child{border-bottom:0;padding-bottom:0;}
.side-item .si-num{
  flex:0 0 24px;width:24px;height:24px;border-radius:8px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand-dark);font-size:12px;font-weight:800;
}
.side-item a{font-size:14px;color:#25424d;line-height:1.6;font-weight:600;}
.side-item a:hover{color:var(--brand-dark);}
.empty-note{
  background:#fff;border:1px dashed var(--line);border-radius:var(--radius-md);
  padding:26px;text-align:center;color:var(--muted);font-size:14.5px;grid-column:1/-1;
}
.more-row{margin-top:24px;}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:900px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:0 22px;transition:all .2s ease;
}
.faq-item[open]{border-color:#bfe5dd;box-shadow:var(--shadow-sm);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 34px 18px 0;position:relative;
  font-weight:700;font-size:15.5px;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:0;top:50%;transform:translateY(-50%);
  font-size:12px;color:var(--muted);transition:transform .22s ease;
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(180deg);color:var(--brand);}
.faq-body{padding:0 0 20px;font-size:14.5px;color:var(--muted);line-height:1.9;}

/* ---------- final cta ---------- */
.final-cta{
  border-radius:var(--radius-lg);
  background:
    radial-gradient(circle at 88% 12%,rgba(245,185,66,.22),transparent 46%),
    linear-gradient(140deg,#08222b,#0e4550 62%,#106057);
  padding:clamp(30px,4vw,52px);color:#e8f5f2;
}
.final-cta-inner{display:grid;grid-template-columns:1.4fr auto;gap:26px;align-items:center;}
.final-cta h2{color:#fff;font-size:clamp(21px,2.4vw,28px);margin-bottom:12px;}
.final-cta p{margin:0;color:rgba(232,245,242,.82);font-size:15px;line-height:1.9;max-width:680px;}
.final-cta .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.btn-accent{background:linear-gradient(135deg,#f5b942,#e09b1d);color:#3a2600;box-shadow:0 12px 26px rgba(224,155,29,.32);}
.btn-accent:hover{color:#3a2600;transform:translateY(-2px);box-shadow:0 16px 32px rgba(224,155,29,.42);}
.btn-light-ghost{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.28);color:#fff;}
.btn-light-ghost:hover{background:rgba(255,255,255,.18);color:#fff;transform:translateY(-2px);}

/* ---------- footer ---------- */
.site-footer{background:#061b22;color:#a9c3c8;padding:56px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:34px;min-width:0;}
.footer-grid > *{min-width:0;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:14px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand strong{color:#fff;font-size:16px;font-weight:800;line-height:1.3;}
.footer-about{font-size:14px;line-height:1.9;color:#8fabb1;margin:0;max-width:420px;}
.footer-col h4{color:#fff;font-size:14.5px;margin-bottom:14px;font-weight:700;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:#9db8be;}
.footer-col a:hover{color:#7fe7cf;}
.footer-bottom{
  margin-top:34px;padding-top:20px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#7e9aa0;
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .split{grid-template-columns:1fr;gap:28px;}
  .latest-layout{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .final-cta-inner{grid-template-columns:1fr;}
  .compare-row{grid-template-columns:1fr 1fr 1fr;gap:12px;padding:16px 18px;}
}
@media (max-width:900px){
  .nav-actions .nav-badge{display:none;}
  .site-nav{
    position:absolute;top:74px;left:0;right:0;
    background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:4px;
    padding:12px 20px 18px;display:none;box-shadow:0 18px 30px rgba(8,34,43,.10);
  }
  .site-nav.is-open{display:flex;}
  .site-nav a{padding:12px 14px;border-radius:12px;text-align:left;}
  .nav-toggle{display:inline-flex;}
}
@media (max-width:768px){
  .section{padding:54px 0;}
  .hero{padding:56px 0 58px;}
  .hero-lead{font-size:15.5px;}
  .hero-points{grid-template-columns:1fr;gap:10px;}
  .hero-point{text-align:left;}
  .dl-grid{grid-template-columns:1fr;}
  .grid-3,.grid-2,.grid-4{grid-template-columns:1fr;}
  .latest-main{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .download-section{margin-top:-30px;}
  .compare-row{grid-template-columns:1fr;gap:8px;padding:18px;}
  .compare-row.head{display:none;}
  .compare-row .col-us{padding:0;background:transparent;}
  .compare-row > div:first-child{font-size:15px;color:var(--brand-dark);}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .brand-text{font-size:15px;}
  .brand-text small{font-size:11px;}
}
@media (max-width:520px){
  .site-wrap{padding:0 16px;}
  .hero-search{flex-direction:column;border-radius:22px;padding:12px;gap:8px;}
  .hero-search .search-icon{display:none;}
  .hero-search input{width:100%;padding:10px 8px;text-align:center;}
  .btn-hero{width:100%;justify-content:center;}
  .hero-hot{font-size:12.5px;gap:7px;}
  .hero-hot a{padding:5px 11px;}
  .nav-inner{height:66px;gap:10px;}
  .nav-cta{padding:9px 14px;font-size:13.5px;}
  .brand-mark{width:36px;height:36px;flex:0 0 36px;font-size:16px;}
  .brand-text{font-size:14px;}
  .brand-text small{display:none;}
  .site-nav{top:66px;}
  .download-panel{padding:22px 18px;}
  .dl-card{padding:14px;}
  .btn{width:100%;}
  .final-cta .cta-actions{width:100%;}
  .final-cta .cta-actions .btn{width:100%;}
  .section-head{margin-bottom:26px;}
}

/* roulang page: article */
:root{
  --ink:#08222b;
  --ink-2:#0d3540;
  --ink-3:#124a52;
  --brand:#0fae8e;
  --brand-dark:#0a8a72;
  --brand-soft:#e7f7f3;
  --accent:#f5b942;
  --accent-soft:#fff5e0;
  --bg:#f4f8f8;
  --surface:#ffffff;
  --text:#15323c;
  --muted:#5f7883;
  --line:#dde8ea;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-sm:0 4px 14px rgba(10,45,55,.06);
  --shadow-md:0 14px 36px rgba(10,45,55,.10);
  --shadow-lg:0 26px 60px rgba(8,34,43,.18);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;}
a:hover{color:var(--brand-dark);}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;font-weight:800;color:var(--ink);line-height:1.35;}
p{margin:0;}
ul,ol{margin:0;}
.site-wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 22px;}
.section{padding:68px 0;}
.section.alt{background:linear-gradient(180deg,#f9fcfb 0%,#eef6f5 100%);}
.section.dark{background:linear-gradient(150deg,#08222b 0%,#0d3a45 55%,#10514d 100%);color:#e7f4f2;}
.section.dark h2,.section.dark h3{color:#ffffff;}
.section-head{max-width:760px;margin-bottom:34px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.6px;
  color:var(--brand-dark);background:var(--brand-soft);
  padding:6px 14px;border-radius:999px;margin-bottom:14px;
}
.section.dark .eyebrow{background:rgba(255,255,255,.10);color:#8be5d2;}
.lead{color:var(--muted);font-size:16px;line-height:1.85;margin:0;}
/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
}
.site-header .nav-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:74px;}
.brand{display:flex;align-items:center;gap:11px;min-width:0;}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:linear-gradient(135deg,#0fae8e,#0b6f7d);
  color:#fff;display:grid;place-items:center;font-weight:800;font-size:18px;
  box-shadow:0 8px 18px rgba(15,174,142,.30);
}
.brand-text{font-weight:800;font-size:16px;color:var(--ink);line-height:1.2;min-width:0;}
.brand-text small{display:block;font-size:11.5px;font-weight:500;color:var(--muted);letter-spacing:.4px;margin-top:3px;}
.site-nav{display:flex;align-items:center;gap:4px;}
.site-nav a{
  padding:9px 15px;border-radius:999px;font-size:15px;font-weight:600;color:#31505b;white-space:nowrap;
}
.site-nav a:hover{background:#eef7f5;color:var(--brand-dark);}
.site-nav a.active{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(15,174,142,.28);}
.nav-actions{display:flex;align-items:center;gap:10px;}
.nav-badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;color:#8a5b00;
  background:var(--accent-soft);border:1px solid #f2dcae;
  padding:5px 11px;border-radius:999px;white-space:nowrap;
}
.nav-badge i{color:var(--accent);}
.nav-cta{
  display:inline-flex;align-items:center;gap:7px;
  background:var(--ink);color:#fff;font-weight:600;font-size:14.5px;
  padding:10px 18px;border-radius:999px;white-space:nowrap;
  box-shadow:0 8px 20px rgba(8,34,43,.20);
}
.nav-cta:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--ink);font-size:17px;
}
.nav-toggle:hover{background:#f2f8f7;}
/* ---------- article head ---------- */
.article-head{
  position:relative;overflow:hidden;color:#eaf6f4;
  background:
    radial-gradient(circle at 10% 14%,rgba(15,174,142,.34),transparent 48%),
    radial-gradient(circle at 90% 6%,rgba(245,185,66,.20),transparent 44%),
    linear-gradient(158deg,#072028 0%,#0d3a45 58%,#0f4f4a 100%);
  padding:38px 0 54px;
}
.article-head::after{
  content:"";position:absolute;right:-120px;bottom:-180px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(15,174,142,.24),transparent 68%);pointer-events:none;
}
.article-head-inner{position:relative;z-index:2;max-width:900px;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(234,246,244,.68);margin-bottom:20px;
}
.breadcrumb a{color:#a8eee0;font-weight:600;}
.breadcrumb a:hover{color:#ffffff;}
.breadcrumb .sep{color:rgba(234,246,244,.42);}
.breadcrumb .current{color:rgba(234,246,244,.78);}
.article-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;padding:5px 13px;border-radius:999px;
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.18);color:#cfeee8;
}
.tag.tag-cat{background:rgba(15,174,142,.30);border-color:rgba(15,174,142,.46);color:#c9fff3;}
.article-head h1{
  color:#ffffff;font-size:clamp(23px,3vw,36px);line-height:1.42;letter-spacing:.3px;
  margin-bottom:16px;
}
.article-summary{
  color:rgba(234,246,244,.86);font-size:15.5px;line-height:1.9;
  max-width:820px;margin-bottom:22px;
}
.article-meta{display:flex;flex-wrap:wrap;gap:10px 20px;font-size:13.5px;color:rgba(234,246,244,.74);}
.article-meta span{display:inline-flex;align-items:center;gap:7px;}
.article-meta i{color:#7fe7cf;font-size:13px;}
/* ---------- layout ---------- */
.article-body-section{padding:52px 0 66px;}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 336px;
  gap:34px;
  align-items:start;
}
.article-main{min-width:0;}
.article-side{min-width:0;display:flex;flex-direction:column;gap:22px;}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px;box-shadow:var(--shadow-sm);
}
.side-card h3{
  font-size:16.5px;color:var(--ink);margin-bottom:6px;
  display:flex;align-items:center;gap:9px;
}
.side-card h3 i{color:var(--brand);font-size:15px;}
.side-sub{font-size:13px;color:var(--muted);margin-bottom:16px;line-height:1.7;}
/* ---------- prose ---------- */
.article-prose{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:38px 42px;box-shadow:var(--shadow-sm);
  font-size:16px;color:#2b4750;line-height:1.95;
}
.article-prose > *:first-child{margin-top:0;}
.article-prose h2{
  font-size:21px;color:var(--ink);margin:34px 0 14px;
  padding-left:14px;border-left:4px solid var(--brand);line-height:1.5;
}
.article-prose h3{font-size:17.5px;color:var(--ink-2);margin:26px 0 10px;}
.article-prose h4{font-size:16px;color:var(--ink-3);margin:22px 0 8px;}
.article-prose p{margin:0 0 16px;color:#2b4750;}
.article-prose ul,.article-prose ol{margin:0 0 18px;padding-left:22px;}
.article-prose li{margin-bottom:8px;}
.article-prose blockquote{
  margin:22px 0;padding:16px 22px;background:var(--brand-soft);
  border-left:4px solid var(--brand);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:#1f5457;
}
.article-prose blockquote p:last-child{margin-bottom:0;}
.article-prose img{border-radius:var(--radius-md);margin:20px auto;box-shadow:var(--shadow-sm);}
.article-prose a{color:var(--brand-dark);text-decoration:underline;text-underline-offset:3px;}
.article-prose a:hover{color:var(--ink);}
.article-prose table{width:100%;border-collapse:collapse;margin:20px 0;font-size:15px;}
.article-prose th,.article-prose td{border:1px solid var(--line);padding:10px 13px;text-align:left;vertical-align:top;}
.article-prose th{background:#f1f8f7;color:var(--ink);font-weight:700;}
.article-prose code{
  background:#eef6f5;color:#0a6c5c;padding:2px 6px;border-radius:6px;font-size:14px;
}
.article-prose hr{border:0;border-top:1px solid var(--line);margin:28px 0;}
.article-empty{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:56px 34px;text-align:center;box-shadow:var(--shadow-sm);
}
.article-empty h2{font-size:20px;margin-bottom:10px;}
.article-empty p{color:var(--muted);margin-bottom:22px;}
/* ---------- download ---------- */
.dl-btn{
  display:flex;align-items:center;gap:12px;width:100%;
  padding:12px 15px;border-radius:var(--radius-md);
  border:1px solid var(--line);background:#fafdfc;color:var(--ink);
  font-weight:600;font-size:14.5px;margin-bottom:10px;
}
.dl-btn:last-child{margin-bottom:0;}
.dl-btn:hover{
  border-color:var(--brand);background:var(--brand-soft);color:var(--brand-dark);
  transform:translateY(-2px);box-shadow:0 10px 22px rgba(15,174,142,.16);
}
.dl-btn i{width:26px;text-align:center;font-size:18px;color:var(--brand-dark);flex:0 0 26px;}
.dl-btn b{display:block;font-weight:700;line-height:1.4;}
.dl-btn em{display:block;font-style:normal;font-size:12px;font-weight:500;color:var(--muted);margin-top:1px;}
.dl-btn:hover em{color:var(--brand-dark);}
/* ---------- knowledge list ---------- */
.know-list{list-style:none;padding:0;margin:0;}
.know-list li{
  display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);
}
.know-list li:last-child{border-bottom:0;padding-bottom:0;}
.know-list li:first-child{padding-top:0;}
.know-icon{
  flex:0 0 34px;width:34px;height:34px;border-radius:10px;
  background:var(--brand-soft);color:var(--brand-dark);
  display:grid;place-items:center;font-size:14px;
}
.know-text b{display:block;font-size:14.5px;color:var(--ink);margin-bottom:2px;}
.know-text span{display:block;font-size:13px;color:var(--muted);line-height:1.7;}
/* ---------- extension cards ---------- */
.ext-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;
}
.ext-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 24px;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  min-width:0;
}
.ext-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#bfe6de;}
.ext-card .ext-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:11px;margin-bottom:14px;
  background:linear-gradient(135deg,#0fae8e,#0b6f7d);color:#fff;font-weight:800;font-size:15px;
  box-shadow:0 8px 18px rgba(15,174,142,.26);
}
.ext-card h3{font-size:17px;margin-bottom:9px;}
.ext-card p{color:var(--muted);font-size:14.5px;line-height:1.85;}
/* ---------- notice ---------- */
.notice-box{
  display:flex;gap:18px;align-items:flex-start;
  background:var(--accent-soft);border:1px solid #f2dcae;border-radius:var(--radius-lg);
  padding:26px 28px;
}
.notice-box i{font-size:22px;color:#c98a10;flex:0 0 auto;margin-top:3px;}
.notice-box h3{font-size:17px;color:#7a4d00;margin-bottom:8px;}
.notice-box p{color:#8a6415;font-size:14.5px;line-height:1.9;}
/* ---------- cta band ---------- */
.cta-band{padding:64px 0;}
.cta-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
}
.cta-inner h2{font-size:clamp(20px,2.4vw,27px);margin-bottom:10px;}
.cta-inner p{color:rgba(231,244,242,.82);font-size:15px;max-width:620px;line-height:1.9;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.btn-solid{
  display:inline-flex;align-items:center;gap:8px;
  background:linear-gradient(135deg,#0fae8e,#0a8a72);color:#fff;font-weight:700;font-size:15px;
  padding:12px 26px;border-radius:999px;box-shadow:0 12px 26px rgba(10,138,114,.34);
}
.btn-solid:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(10,138,114,.44);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.24);color:#e7f4f2;
  font-weight:600;font-size:15px;padding:12px 24px;border-radius:999px;
}
.btn-ghost:hover{background:rgba(255,255,255,.16);color:#fff;border-color:rgba(255,255,255,.4);}
/* ---------- footer ---------- */
.site-footer{background:#08222b;color:#c7dbe0;padding:56px 0 26px;}
.footer-grid{
  display:grid;grid-template-columns:minmax(0,1.7fr) minmax(0,1fr) minmax(0,1fr);
  gap:36px;
}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;color:#fff;}
.footer-brand strong{font-size:15px;color:#fff;line-height:1.5;font-weight:800;}
.footer-about{color:#9dbbc2;font-size:14px;line-height:1.9;max-width:470px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:14px;font-weight:700;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:9px;}
.footer-col a{color:#9dbbc2;font-size:14px;}
.footer-col a:hover{color:#7fe7cf;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.10);
  font-size:13px;color:#7e9ba3;line-height:1.8;
}
/* ---------- responsive ---------- */
@media (max-width:1024px){
  .article-layout{grid-template-columns:1fr;}
  .nav-badge{display:none;}
  .ext-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .article-prose{padding:32px 30px;}
}
@media (max-width:768px){
  .site-wrap{padding:0 16px;}
  .site-header .nav-inner{height:auto;min-height:66px;padding:10px 0;flex-wrap:wrap;}
  .brand-text{font-size:14.5px;}
  .brand-text small{font-size:10.5px;}
  .site-nav{
    display:none;position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#ffffff;padding:12px 16px 16px;
    border-bottom:1px solid var(--line);box-shadow:var(--shadow-md);
  }
  .site-nav.open{display:flex;}
  .site-nav a{padding:11px 14px;border-radius:12px;font-size:15px;}
  .nav-toggle{display:inline-flex;}
  .nav-cta{padding:9px 15px;font-size:13.5px;}
  .article-head{padding:28px 0 42px;}
  .article-summary{font-size:14.5px;}
  .section{padding:52px 0;}
  .article-body-section{padding:38px 0 52px;}
  .article-prose{padding:26px 22px;font-size:15.5px;}
  .article-prose h2{font-size:19px;}
  .article-prose h3{font-size:16.5px;}
  .ext-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .notice-box{flex-direction:column;gap:12px;padding:22px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .brand-text{font-size:13.5px;}
  .brand-text small{display:none;}
  .nav-actions{gap:8px;}
  .nav-cta span{display:none;}
  .article-prose{padding:22px 18px;}
  .side-card{padding:20px;}
  .btn-solid,.btn-ghost{width:100%;justify-content:center;}
}

/* roulang page: category1 */
:root{
  --ink:#08222b;
  --ink-2:#0d3540;
  --ink-3:#124a52;
  --brand:#0fae8e;
  --brand-dark:#0a8a72;
  --brand-soft:#e7f7f3;
  --accent:#f5b942;
  --accent-soft:#fff5e0;
  --bg:#f4f8f8;
  --surface:#ffffff;
  --text:#15323c;
  --muted:#5f7883;
  --line:#dde8ea;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-sm:0 4px 14px rgba(10,45,55,.06);
  --shadow-md:0 14px 36px rgba(10,45,55,.10);
  --shadow-lg:0 26px 60px rgba(8,34,43,.18);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;}
a:hover{color:var(--brand-dark);}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;cursor:pointer;}
p{margin:0 0 14px;}
p:last-child{margin-bottom:0;}
.site-wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}
.section{padding:70px 0;}
.section.alt{background:linear-gradient(180deg,#f9fcfb 0%,#eef6f5 100%);}
.section.dark{background:linear-gradient(150deg,#08222b 0%,#0d3a45 55%,#10514d 100%);color:#e7f4f2;}
.section.dark h2,.section.dark h3{color:#ffffff;}
.section-head{max-width:780px;margin-bottom:34px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head h2{
  font-size:clamp(22px,2.4vw,30px);
  line-height:1.4;margin:0 0 14px;color:var(--ink);letter-spacing:.2px;
}
.section.dark .section-head h2{color:#fff;}
.section-head .lead{color:var(--muted);font-size:15.5px;line-height:1.9;margin:0;}
.section.dark .lead{color:rgba(231,244,242,.82);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.6px;
  color:var(--brand-dark);background:var(--brand-soft);
  padding:6px 14px;border-radius:999px;margin-bottom:14px;
}
.section.dark .eyebrow{background:rgba(255,255,255,.10);color:#8be5d2;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:74px;}
.brand{display:flex;align-items:center;gap:11px;min-width:0;}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:linear-gradient(135deg,#0fae8e,#0b6f7d);
  color:#fff;display:grid;place-items:center;font-weight:800;font-size:18px;
  box-shadow:0 8px 18px rgba(15,174,142,.30);
}
.brand-text{font-weight:800;font-size:16px;color:var(--ink);line-height:1.2;min-width:0;}
.brand-text small{display:block;font-size:11.5px;font-weight:500;color:var(--muted);letter-spacing:.4px;margin-top:3px;}
.site-nav{display:flex;align-items:center;gap:4px;}
.site-nav a{
  padding:9px 15px;border-radius:999px;font-size:15px;font-weight:600;color:#31505b;white-space:nowrap;
}
.site-nav a:hover{background:#eef7f5;color:var(--brand-dark);}
.site-nav a.active{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(15,174,142,.28);}
.nav-actions{display:flex;align-items:center;gap:10px;}
.nav-badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;color:#8a5b00;
  background:var(--accent-soft);border:1px solid #f2dcae;
  padding:5px 11px;border-radius:999px;white-space:nowrap;
}
.nav-badge i{color:var(--accent);}
.nav-cta{
  display:inline-flex;align-items:center;gap:7px;
  background:var(--ink);color:#fff;font-weight:600;font-size:14.5px;
  padding:10px 18px;border-radius:999px;white-space:nowrap;
  box-shadow:0 8px 20px rgba(8,34,43,.20);
}
.nav-cta:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--ink);font-size:17px;
}
.nav-toggle:hover{background:#f2f8f7;}

/* ---------- category hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;color:#eaf6f4;
  padding:52px 0 66px;
  background:
    radial-gradient(circle at 10% 12%,rgba(15,174,142,.34),transparent 48%),
    radial-gradient(circle at 88% 4%,rgba(245,185,66,.20),transparent 46%),
    linear-gradient(158deg,#072028 0%,#0d3a45 58%,#0f4f4a 100%);
}
.cat-hero::after{
  content:"";position:absolute;right:-120px;bottom:-180px;width:440px;height:440px;border-radius:50%;
  background:radial-gradient(circle,rgba(15,174,142,.24),transparent 68%);pointer-events:none;
}
.cat-hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);
  gap:44px;align-items:center;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(234,246,244,.66);margin-bottom:18px;}
.crumb a{color:rgba(234,246,244,.82);}
.crumb a:hover{color:#fff;}
.crumb i{font-size:10px;opacity:.6;}
.cat-hero h1{
  color:#fff;font-size:clamp(25px,3.2vw,40px);line-height:1.34;
  margin:0 0 18px;letter-spacing:.5px;
}
.cat-hero h1 .hl{color:#7fe7cf;}
.cat-hero-lead{
  color:rgba(234,246,244,.86);font-size:16px;line-height:1.95;
  margin:0 0 26px;max-width:620px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:28px;}
.hero-tags span{
  font-size:13px;font-weight:500;color:#d9f4ee;
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.16);
  padding:5px 13px;border-radius:999px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.btn-solid{
  display:inline-flex;align-items:center;gap:8px;
  background:linear-gradient(135deg,#0fae8e,#0a8a72);color:#fff;
  font-weight:700;font-size:15px;padding:12px 24px;border-radius:999px;
  box-shadow:0 12px 26px rgba(10,138,114,.34);border:0;
}
.btn-solid:hover{color:#fff;transform:translateY(-1px);box-shadow:0 16px 32px rgba(10,138,114,.44);}
.btn-line{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.08);color:#eaf6f4;
  border:1px solid rgba(255,255,255,.28);
  font-weight:600;font-size:15px;padding:12px 24px;border-radius:999px;
}
.btn-line:hover{background:rgba(255,255,255,.16);color:#fff;border-color:rgba(255,255,255,.44);}
.hero-panel{
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-lg);
  padding:24px 22px;
  box-shadow:var(--shadow-lg);
  backdrop-filter:blur(8px);
  min-width:0;
}
.hero-panel h2{
  font-size:15px;color:#fff;margin:0 0 16px;letter-spacing:.4px;
  display:flex;align-items:center;gap:8px;font-weight:700;
}
.hero-panel h2 i{color:var(--accent);font-size:14px;}
.panel-list{list-style:none;margin:0;padding:0;display:grid;gap:12px;}
.panel-list li{
  display:flex;align-items:flex-start;gap:11px;
  padding:11px 13px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.09);
  min-width:0;
}
.panel-list li .pi{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;
  display:grid;place-items:center;font-size:12px;font-weight:700;
  background:rgba(15,174,142,.28);color:#9df0dc;
}
.panel-list li strong{display:block;color:#fff;font-size:14px;font-weight:700;line-height:1.5;}
.panel-list li span{display:block;color:rgba(234,246,244,.7);font-size:12.5px;line-height:1.6;margin-top:2px;}

/* ---------- cards ---------- */
.topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.topic-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-md);padding:24px 22px;
  box-shadow:var(--shadow-sm);min-width:0;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#bfe6dd;}
.topic-icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand-dark);font-size:18px;margin-bottom:16px;
}
.topic-card h3{font-size:17px;line-height:1.5;margin:0 0 10px;color:var(--ink);}
.topic-card p{color:var(--muted);font-size:14.5px;line-height:1.85;margin:0;}

/* ---------- rule cards ---------- */
.rule-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.rule-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:24px 22px;box-shadow:var(--shadow-sm);min-width:0;
  border-left:4px solid var(--brand);
}
.rule-card h3{font-size:17px;margin:0 0 12px;color:var(--ink);display:flex;align-items:center;gap:9px;}
.rule-card h3 i{color:var(--brand);font-size:15px;}
.rule-card ul{list-style:none;margin:0;padding:0;display:grid;gap:9px;}
.rule-card li{
  position:relative;padding-left:18px;color:var(--muted);
  font-size:14.5px;line-height:1.8;min-width:0;
}
.rule-card li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;
  background:var(--brand);opacity:.75;
}
.notice-bar{
  margin-top:22px;display:flex;align-items:flex-start;gap:12px;
  background:var(--accent-soft);border:1px solid #f2dcae;border-radius:var(--radius-md);
  padding:16px 18px;color:#8a5b00;font-size:14px;line-height:1.8;
}
.notice-bar i{color:var(--accent);font-size:16px;margin-top:3px;}

/* ---------- concept ---------- */
.concept-grid{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:40px;align-items:start;}
.concept-text h2{font-size:clamp(22px,2.4vw,29px);line-height:1.4;margin:0 0 16px;color:var(--ink);}
.concept-text p{color:var(--muted);font-size:15.5px;line-height:1.95;}
.stat-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:24px;}
.stat-box{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:16px 14px;text-align:center;min-width:0;box-shadow:var(--shadow-sm);
}
.stat-box b{display:block;font-size:15px;color:var(--brand-dark);font-weight:800;line-height:1.4;}
.stat-box span{display:block;font-size:12.5px;color:var(--muted);margin-top:4px;}
.def-list{list-style:none;margin:0;padding:0;display:grid;gap:14px;}
.def-list li{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:18px 20px;box-shadow:var(--shadow-sm);min-width:0;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.def-list li:hover{border-color:#bfe6dd;box-shadow:var(--shadow-md);}
.def-list dt,.def-list .dt{
  font-size:15.5px;font-weight:700;color:var(--ink);margin-bottom:6px;
  display:flex;align-items:center;gap:8px;
}
.def-list .dt i{color:var(--brand);font-size:13px;}
.def-list dd,.def-list .dd{margin:0;color:var(--muted);font-size:14.5px;line-height:1.85;}

/* ---------- flow ---------- */
.flow-list{list-style:none;margin:0;padding:0;display:grid;gap:16px;}
.flow-item{
  display:grid;grid-template-columns:56px minmax(0,1fr);gap:18px;align-items:start;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-md);padding:20px 22px;min-width:0;
}
.flow-num{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:rgba(15,174,142,.26);color:#a8f0dc;font-weight:800;font-size:17px;
  border:1px solid rgba(15,174,142,.36);
}
.flow-item h3{margin:0 0 6px;font-size:16.5px;color:#fff;line-height:1.5;}
.flow-item p{margin:0;color:rgba(231,244,242,.78);font-size:14.5px;line-height:1.85;}

/* ---------- risk ---------- */
.risk-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.risk-item{
  display:flex;align-items:flex-start;gap:12px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-md);padding:18px 20px;min-width:0;
  box-shadow:var(--shadow-sm);
}
.risk-item i{color:#d9603f;font-size:15px;margin-top:4px;}
.risk-item span{color:var(--text);font-size:14.5px;line-height:1.8;min-width:0;}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:14px;max-width:900px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-md);padding:0;overflow:hidden;
  box-shadow:var(--shadow-sm);min-width:0;
}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;
  font-size:15.5px;font-weight:700;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:12px;color:var(--brand-dark);transition:transform .2s ease;flex:0 0 auto;
}
.faq-item[open] summary::after{transform:rotate(180deg);}
.faq-item p{padding:0 22px 20px;margin:0;color:var(--muted);font-size:14.5px;line-height:1.9;}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.news-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:22px 20px;box-shadow:var(--shadow-sm);min-width:0;
  display:flex;flex-direction:column;gap:12px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#bfe6dd;}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12.5px;color:var(--muted);}
.news-tag{
  display:inline-flex;align-items:center;gap:5px;
  background:var(--brand-soft);color:var(--brand-dark);
  font-weight:600;padding:3px 10px;border-radius:999px;font-size:12px;
}
.news-card h3{font-size:16.5px;line-height:1.6;margin:0;color:var(--ink);font-weight:700;}
.news-card h3 a{display:block;}
.news-card h3 a:hover{color:var(--brand-dark);}
.news-card p{
  color:var(--muted);font-size:14px;line-height:1.85;margin:0;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-more{margin-top:10px;font-weight:600;color:var(--brand-dark);font-size:13.5px;display:inline-flex;align-items:center;gap:6px;}
.empty-note{
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius-md);
  padding:30px 24px;text-align:center;color:var(--muted);font-size:14.5px;
}

/* ---------- download ---------- */
.download-panel{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#08222b 0%,#0d3a45 52%,#0f4f4a 100%);
  border-radius:var(--radius-lg);padding:44px 40px;color:#eaf6f4;
  box-shadow:var(--shadow-lg);
}
.download-panel::after{
  content:"";position:absolute;right:-90px;top:-110px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(15,174,142,.30),transparent 70%);pointer-events:none;
}
.download-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:36px;align-items:center;}
.download-panel h2{color:#fff;font-size:clamp(21px,2.3vw,28px);margin:0 0 12px;line-height:1.4;}
.download-panel p{color:rgba(234,246,244,.82);font-size:15px;line-height:1.9;margin:0;}
.dl-buttons{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;}
.dl-btn{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.20);
  border-radius:var(--radius-md);padding:18px 12px;color:#eaf6f4;
  font-size:13.5px;font-weight:600;text-align:center;min-width:0;
}
.dl-btn i{font-size:20px;color:#8be5d2;}
.dl-btn b{font-size:14px;font-weight:700;color:#fff;}
.dl-btn small{font-size:11.5px;color:rgba(234,246,244,.62);font-weight:500;}
.dl-btn:hover{background:rgba(15,174,142,.28);border-color:rgba(15,174,142,.55);transform:translateY(-3px);color:#fff;}
.dl-btn:hover i{color:#fff;}

/* ---------- footer ---------- */
.site-footer{
  background:linear-gradient(180deg,#08222b 0%,#061a21 100%);
  color:rgba(231,244,242,.78);padding:56px 0 26px;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr) minmax(0,1fr);gap:36px;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:14px;}
.footer-brand .brand-mark{width:38px;height:38px;flex:0 0 38px;font-size:17px;}
.footer-brand strong{color:#fff;font-size:15px;line-height:1.5;font-weight:700;}
.footer-about{color:rgba(231,244,242,.62);font-size:13.8px;line-height:1.9;margin:0;max-width:520px;}
.footer-col h4{color:#fff;font-size:14.5px;margin:0 0 14px;font-weight:700;letter-spacing:.3px;}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px;}
.footer-col a{color:rgba(231,244,242,.72);font-size:13.8px;}
.footer-col a:hover{color:#7fe7cf;}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:12.8px;color:rgba(231,244,242,.52);line-height:1.8;
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .cat-hero-grid{grid-template-columns:1fr;gap:32px;}
  .cat-hero-lead{max-width:none;}
  .concept-grid{grid-template-columns:1fr;gap:28px;}
  .topic-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .download-inner{grid-template-columns:1fr;gap:26px;}
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px;}
  .footer-grid > div:first-child{grid-column:1 / -1;}
}
@media (max-width:991px){
  .site-nav{
    position:absolute;top:74px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border-bottom:1px solid var(--line);
    padding:12px 20px 18px;box-shadow:var(--shadow-md);display:none;
  }
  .site-nav.open{display:flex;}
  .site-nav a{padding:11px 14px;border-radius:12px;font-size:15px;}
  .nav-toggle{display:inline-flex;}
  .nav-badge{display:none;}
}
@media (max-width:768px){
  .section{padding:52px 0;}
  .cat-hero{padding:38px 0 48px;}
  .topic-grid{grid-template-columns:1fr;}
  .rule-grid{grid-template-columns:1fr;}
  .risk-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .stat-row{grid-template-columns:1fr;gap:10px;}
  .download-panel{padding:30px 22px;}
  .dl-buttons{grid-template-columns:1fr;}
  .dl-btn{flex-direction:row;justify-content:flex-start;gap:12px;padding:15px 16px;text-align:left;}
  .dl-btn i{font-size:18px;}
  .flow-item{grid-template-columns:44px minmax(0,1fr);gap:14px;padding:16px 16px;}
  .flow-num{width:38px;height:38px;font-size:15px;border-radius:10px;}
  .footer-grid{grid-template-columns:1fr;}
  .nav-cta{display:none;}
}
@media (max-width:520px){
  .site-wrap{padding:0 15px;}
  .brand-text{font-size:14px;}
  .brand-text small{font-size:10.5px;}
  .brand-mark{width:36px;height:36px;flex:0 0 36px;font-size:16px;border-radius:10px;}
  .cat-hero h1{font-size:23px;}
  .cat-hero-lead{font-size:15px;}
  .btn-solid,.btn-line{padding:11px 18px;font-size:14px;}
  .hero-actions{gap:10px;}
  .hero-panel{padding:18px 16px;}
  .topic-card,.rule-card,.news-card{padding:18px 16px;}
  .faq-item summary{padding:15px 16px;font-size:14.5px;}
  .faq-item p{padding:0 16px 16px;font-size:14px;}
  .footer-bottom{flex-direction:column;}
}