/* roulang page: index */
:root{
  --ink:#0e1c33;
  --ink-2:#283c5b;
  --brand:#1b4a8f;
  --brand-2:#2f79d8;
  --accent:#16b8a6;
  --gold:#e9a325;
  --bg:#f4f7fc;
  --bg-alt:#eef3fb;
  --card:#ffffff;
  --line:#e2e9f4;
  --muted:#5d708e;
  --radius:22px;
  --radius-sm:14px;
  --shadow-sm:0 2px 10px rgba(16,38,73,.06);
  --shadow:0 16px 40px rgba(16,38,73,.12);
}
*,*::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",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.7;color:var(--ink);background:var(--bg);
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:1.1em}
button{font-family:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}

/* ========== header ========== */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:74px}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-mark{
  width:44px;height:44px;flex:0 0 auto;border-radius:13px;
  background:linear-gradient(135deg,#1b4a8f,#2f79d8);color:#fff;
  display:grid;place-items:center;font-size:20px;font-weight:700;
  box-shadow:0 8px 18px rgba(27,74,143,.28);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-text strong{font-size:18px;letter-spacing:.5px;color:var(--ink);line-height:1.35}
.brand-text small{font-size:12px;color:var(--muted);letter-spacing:.3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.topbar-tag{display:none;font-size:12.5px;color:var(--muted)}
.channel-bar{border-top:1px solid #f0f4fb}
.channel-track{display:flex;gap:8px;overflow-x:auto;padding-top:2px;padding-bottom:12px;scrollbar-width:none}
.channel-track::-webkit-scrollbar{display:none}
.channel{
  flex:0 0 auto;padding:8px 18px;border-radius:999px;font-size:15px;font-weight:500;
  color:var(--ink-2);background:#f4f7fc;border:1px solid transparent;
  transition:background .2s,color .2s,box-shadow .2s,transform .2s;
}
.channel:hover{background:#e6eefb;color:var(--brand);transform:translateY(-1px)}
.channel:focus-visible{outline:3px solid rgba(47,121,216,.35);outline-offset:2px}
.channel.is-active{background:linear-gradient(135deg,#1b4a8f,#2f79d8);color:#fff;box-shadow:0 8px 18px rgba(31,86,166,.26)}

/* ========== buttons ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .2s,box-shadow .2s,background .2s,color .2s,border-color .2s;
}
.btn:focus-visible{outline:3px solid rgba(47,121,216,.45);outline-offset:2px}
.btn-primary{background:linear-gradient(135deg,#2f79d8,#1b4a8f);color:#fff;box-shadow:0 10px 24px rgba(27,74,143,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(27,74,143,.34)}
.btn-primary:active{transform:translateY(0)}
.btn-light{background:#fff;color:#12325c;box-shadow:0 10px 22px rgba(9,25,48,.2)}
.btn-light:hover{transform:translateY(-2px)}
.btn-ghost{background:rgba(255,255,255,.12);color:#eaf2ff;border-color:rgba(255,255,255,.34)}
.btn-ghost:hover{background:rgba(255,255,255,.22)}
.btn-outline{background:#fff;color:var(--brand);border-color:#c9dbf5}
.btn-outline:hover{background:#eef4fd;border-color:#a9c6ea}
.btn-sm{padding:9px 18px;font-size:14px}

/* ========== sections ========== */
.section{padding:66px 0}
.section--tight{padding:44px 0}
.section--alt{background:var(--bg-alt)}
.section--dark{background:linear-gradient(180deg,#0b1728,#122340);color:#dbe6f6}
.section-head{max-width:780px;margin-bottom:34px}
.section-head h2{font-size:clamp(22px,2.4vw,30px);line-height:1.38;letter-spacing:-.2px}
.section-head p{margin-top:12px;font-size:15.5px;color:var(--muted)}
.section--dark .section-head p{color:#a8bedd}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--brand);background:#e6eefb;border-radius:999px;padding:5px 14px;margin-bottom:14px;
}
.section--dark .eyebrow{background:rgba(47,121,216,.22);color:#a9cdfb}

/* ========== hero ========== */
.hero{padding:34px 0 58px;background:linear-gradient(180deg,#eaf1fc,#f4f7fc 72%)}
.hero-bento{display:grid;grid-template-columns:minmax(0,1.52fr) minmax(0,1fr);gap:18px}
.hero-main{
  grid-row:span 2;position:relative;overflow:hidden;
  border-radius:26px;padding:34px;display:flex;flex-direction:column;gap:16px;
  color:#eaf2ff;background:linear-gradient(155deg,#0f2544 0%,#1b4a8f 58%,#2f79d8 100%);
  box-shadow:0 24px 50px rgba(16,38,73,.22);
}
.hero-main::after{
  content:"";position:absolute;right:-100px;top:-110px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(22,184,166,.38),transparent 66%);pointer-events:none;
}
.hero-badge{
  position:relative;display:inline-flex;align-items:center;gap:8px;align-self:flex-start;
  font-size:13px;font-weight:600;padding:5px 14px;border-radius:999px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);color:#dbeafd;
}
.hero-main h1{position:relative;font-size:clamp(25px,3vw,37px);line-height:1.34;letter-spacing:-.4px;color:#fff}
.hero-lead{position:relative;font-size:15.5px;color:#c6d9f4;max-width:660px}
.hero-actions{position:relative;display:flex;flex-wrap:wrap;gap:12px;margin-top:4px}
.hero-stats{position:relative;display:flex;flex-wrap:wrap;gap:10px;margin-top:auto;padding-top:6px}
.hero-stat{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);border-radius:14px;padding:10px 16px;min-width:126px}
.hero-stat b{display:block;font-size:18px;color:#fff;line-height:1.4}
.hero-stat span{font-size:12.5px;color:#b6cfee}
.hero-side{
  background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px;
  box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:10px;min-width:0;
}
.hero-side h3{font-size:16px;color:var(--ink);display:flex;align-items:center;gap:8px}
.hero-side h3 i{width:8px;height:8px;border-radius:50%;background:var(--accent);display:inline-block}
.hero-side .side-row{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;font-size:14px;color:var(--ink-2);padding-bottom:9px;border-bottom:1px dashed #e7eef9}
.hero-side .side-row:last-child{border-bottom:0;padding-bottom:0}
.hero-side .side-row b{color:var(--brand);white-space:nowrap;font-size:14px}
.hero-side .side-note{font-size:12.5px;color:#8496b0;margin-top:2px}
.hero-cta{
  grid-column:1/-1;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px 24px;box-shadow:var(--shadow-sm);
}
.hero-cta p{font-size:15px;color:var(--ink-2)}
.hero-cta p strong{color:var(--brand)}

/* ========== download ========== */
.download-band{
  display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.15fr);gap:26px;align-items:center;
  background:linear-gradient(140deg,#0d1f38,#16345c);border-radius:26px;padding:32px;color:#e8eefb;
  box-shadow:0 22px 46px rgba(9,25,48,.2);
}
.download-band h2{font-size:clamp(20px,2.2vw,26px);color:#fff;line-height:1.4}
.download-band p{margin-top:10px;font-size:14.5px;color:#a9c1e0}
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.dl-card{
  display:flex;flex-direction:column;align-items:center;gap:5px;text-align:center;
  padding:18px 12px;border-radius:16px;background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.15);color:#eaf2ff;
  transition:background .22s,border-color .22s,transform .22s,box-shadow .22s;
}
.dl-card:hover{background:rgba(47,121,216,.32);border-color:rgba(120,180,255,.5);transform:translateY(-3px);box-shadow:0 14px 26px rgba(6,18,36,.32)}
.dl-card:focus-visible{outline:3px solid rgba(120,180,255,.6);outline-offset:2px}
.dl-card .dl-ico{font-size:20px;line-height:1}
.dl-card strong{font-size:15px;font-weight:600}
.dl-card span{font-size:12.5px;color:#a9c1e0}

/* ========== grids & cards ========== */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.grid-2 > *,.grid-3 > *,.grid-4 > *{min-width:0}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;
  box-shadow:var(--shadow-sm);transition:box-shadow .24s,transform .24s,border-color .24s;min-width:0;
}
.card:hover{box-shadow:var(--shadow);transform:translateY(-3px);border-color:#cfdcf0}
.card h3{font-size:17px;line-height:1.5;margin-bottom:8px}
.card p{font-size:14.5px;color:var(--muted)}
.card-tag{
  display:inline-block;font-size:12.5px;font-weight:600;color:var(--brand);
  background:#eaf1fb;border-radius:999px;padding:3px 11px;margin-bottom:10px;
}
.card-ico{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;font-size:19px;
  background:linear-gradient(135deg,#e6eefb,#d6e6fa);color:var(--brand);margin-bottom:14px;
}

/* metrics */
.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.metric-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;
  box-shadow:var(--shadow-sm);min-width:0;transition:transform .22s,box-shadow .22s;
}
.metric-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.metric-card .m-num{font-size:25px;font-weight:700;color:var(--brand);letter-spacing:-.5px;line-height:1.3}
.metric-card h3{margin-top:6px;font-size:15px;color:var(--ink)}
.metric-card p{margin-top:8px;font-size:13.5px;color:var(--muted)}
.metric-note{margin-top:16px;font-size:13px;color:#8496b0}

/* compare */
.compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.compare-card{border-radius:22px;padding:26px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-sm);min-width:0}
.compare-card.bad{background:#fff8f5;border-color:#f6dcd2}
.compare-card.good{background:#f2fbf8;border-color:#c9ece1}
.compare-card h3{font-size:18px;margin-bottom:16px;display:flex;align-items:center;gap:10px}
.compare-card h3 em{font-style:normal;font-size:12.5px;font-weight:600;padding:3px 10px;border-radius:999px;background:rgba(217,96,63,.12);color:#c2542f}
.compare-card.good h3 em{background:rgba(15,154,125,.12);color:#0f8a70}
.tick-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px}
.tick-list li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-2);line-height:1.68}
.tick-list li::before{content:"×";flex:0 0 auto;color:#d9603f;font-weight:700}
.compare-card.good .tick-list li::before{content:"✓";color:#0f9a7d}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.step-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:var(--shadow-sm);min-width:0;transition:transform .22s,box-shadow .22s}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.step-no{width:36px;height:36px;border-radius:11px;background:#e6eefb;color:var(--brand);display:grid;place-items:center;font-weight:700;margin-bottom:12px}
.step-card h3{font-size:16px;margin-bottom:8px}
.step-card p{font-size:14px;color:var(--muted)}

/* timeline */
.timeline{position:relative;padding-left:28px;display:flex;flex-direction:column}
.timeline::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,#c9dbf5,#2f79d8)}
.tl-item{position:relative;padding-bottom:24px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:"";position:absolute;left:-28px;top:7px;width:14px;height:14px;border-radius:50%;background:#fff;border:3px solid #2f79d8;box-sizing:border-box}
.tl-item h3{font-size:16.5px;margin-bottom:6px}
.tl-item p{font-size:14.5px;color:var(--muted)}
.tl-step{display:inline-block;font-size:12px;font-weight:600;color:var(--brand);background:#eaf1fb;border-radius:999px;padding:2px 10px;margin-right:8px;vertical-align:middle}

/* insights */
.insights-layout{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:22px;align-items:start}
.post-list{display:flex;flex-direction:column;gap:14px}
.post-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px 22px;
  box-shadow:var(--shadow-sm);transition:box-shadow .22s,transform .22s,border-color .22s;
}
.post-card:hover{border-color:#bcd2ef;box-shadow:var(--shadow);transform:translateY(-2px)}
.post-card:focus-visible{outline:3px solid rgba(47,121,216,.4);outline-offset:2px}
.post-card h3{font-size:17px;line-height:1.55;color:var(--ink)}
.post-card p{
  margin-top:8px;font-size:14px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{margin-top:12px;display:flex;flex-wrap:wrap;gap:8px;font-size:12.5px;color:#7e91ac}
.post-meta span{background:#f1f5fc;border-radius:999px;padding:3px 11px}
.side-panel{background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:var(--shadow-sm);min-width:0}
.side-panel h3{font-size:16px;margin-bottom:8px}
.side-post{display:block;padding:12px 0;border-bottom:1px dashed #e7eef9;font-size:14.5px;color:var(--ink-2);transition:color .2s}
.side-post:last-child{border-bottom:0;padding-bottom:0}
.side-post:hover{color:var(--brand-2)}
.side-post span{display:block;font-size:12.5px;color:#8496b0;margin-top:4px}
.more-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:14.5px;font-weight:600;
  color:var(--brand);padding:10px 20px;border-radius:999px;background:#eaf1fb;transition:background .2s,transform .2s;
}
.more-link:hover{background:#dbe8fa;transform:translateX(3px)}
.empty-note{background:#fff;border:1px dashed #c9dbf5;border-radius:18px;padding:26px;text-align:center;font-size:14.5px;color:var(--muted)}

/* faq */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 22px;box-shadow:var(--shadow-sm)}
.faq-item h3{font-size:16px;line-height:1.6;display:flex;gap:10px;align-items:flex-start}
.faq-item h3::before{
  content:"问";flex:0 0 auto;width:26px;height:26px;border-radius:9px;background:#e6eefb;color:var(--brand);
  font-size:12.5px;font-weight:700;display:grid;place-items:center;margin-top:1px;
}
.faq-item p{margin-top:10px;font-size:14.5px;color:var(--ink-2);padding-left:36px}

/* final cta */
.final-cta{
  display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.8fr);gap:26px;align-items:center;
  background:linear-gradient(135deg,#10254a,#1b4a8f 62%,#2f79d8);border-radius:26px;padding:38px;color:#fff;
  box-shadow:0 26px 52px rgba(16,38,73,.26);
}
.final-cta h2{font-size:clamp(21px,2.3vw,28px);line-height:1.4}
.final-cta p{margin-top:12px;font-size:15px;color:#c6d9f4}
.final-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
.final-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px;font-size:14px;color:#c6d9f4}
.final-list li{display:flex;gap:9px;align-items:flex-start}
.final-list li::before{content:"·";color:#7fd6c8;font-weight:700}

/* footer */
.site-footer{background:#0b1728;color:#a9bdd8;padding:50px 0 26px;margin-top:70px}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.7fr) repeat(2,minmax(0,1fr));gap:30px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.footer-brand .brand-mark{width:40px;height:40px;border-radius:12px;font-size:18px;box-shadow:none}
.footer-brand strong{color:#fff;font-size:17px;letter-spacing:.5px}
.footer-about{font-size:14px;color:#8fa5c2;line-height:1.8;max-width:420px}
.footer-col h3{color:#fff;font-size:15px;margin-bottom:14px}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:#9fb5d2;transition:color .2s,transform .2s;display:inline-block}
.footer-col a:hover{color:#7fd6c8;transform:translateX(2px)}
.footer-bottom{
  margin-top:34px;padding-top:18px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:#7d92ae;
}

/* ========== responsive ========== */
@media (max-width:1024px){
  .hero-bento{grid-template-columns:1fr}
  .hero-main{grid-row:auto;padding:30px}
  .hero-cta{grid-column:auto}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .insights-layout{grid-template-columns:1fr}
  .download-band{grid-template-columns:1fr}
  .final-cta{grid-template-columns:1fr}
  .final-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-about{max-width:none}
}
@media (max-width:768px){
  .section{padding:50px 0}
  .section--tight{padding:34px 0}
  .compare{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .topbar-tag{display:none}
  .hero-main{padding:26px}
  .hero-lead{font-size:15px}
  .brand-text small{max-width:190px}
}
@media (max-width:520px){
  .grid-3,.grid-4,.metric-grid,.steps{grid-template-columns:1fr}
  .dl-grid{grid-template-columns:1fr}
  .topbar-inner{min-height:66px}
  .brand-text strong{font-size:16.5px}
  .brand-text small{max-width:150px;font-size:11px}
  .hero{padding:22px 0 42px}
  .hero-main{border-radius:20px;padding:22px}
  .hero-actions .btn{width:100%}
  .hero-cta{padding:16px 18px}
  .hero-cta .btn{width:100%}
  .download-band{padding:22px;border-radius:20px}
  .final-cta{padding:24px;border-radius:20px}
  .final-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .faq-item p{padding-left:0}
  .post-card{padding:18px}
}

/* roulang page: article */
:root{
  --ink:#0e1c33;
  --ink-2:#283c5b;
  --brand:#1b4a8f;
  --brand-2:#2f79d8;
  --accent:#16b8a6;
  --gold:#e9a325;
  --bg:#f4f7fc;
  --bg-alt:#eef3fb;
  --card:#ffffff;
  --line:#e2e9f4;
  --muted:#5d708e;
  --radius:22px;
  --radius-sm:14px;
  --shadow-sm:0 2px 10px rgba(16,38,73,.06);
  --shadow:0 16px 40px rgba(16,38,73,.12);
}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.75;color:var(--ink);background:var(--bg);
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}

/* ============ header ============ */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:74px}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-mark{
  width:44px;height:44px;flex:0 0 auto;border-radius:13px;
  background:linear-gradient(135deg,#1b4a8f,#2f79d8);color:#fff;
  display:grid;place-items:center;font-size:20px;font-weight:700;
  box-shadow:0 8px 18px rgba(27,74,143,.28);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-text strong{font-size:18px;letter-spacing:.5px;color:var(--ink);line-height:1.35}
.brand-text small{font-size:12px;color:var(--muted);letter-spacing:.3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.topbar-tag{display:none;font-size:12.5px;color:var(--muted)}
.channel-bar{border-top:1px solid var(--line);background:#fff}
.channel-track{display:flex;align-items:center;gap:6px;overflow-x:auto;padding:8px 0 10px;scrollbar-width:none}
.channel-track::-webkit-scrollbar{display:none}
.channel{
  flex:0 0 auto;padding:8px 18px;border-radius:999px;font-size:14.5px;font-weight:500;
  color:var(--ink-2);white-space:nowrap;
  transition:background .2s,color .2s,box-shadow .2s,transform .2s;
}
.channel:hover{background:#eaf1fc;color:var(--brand)}
.channel:focus-visible{outline:3px solid rgba(47,121,216,.4);outline-offset:2px}
.channel.is-active{background:linear-gradient(135deg,#2f79d8,#1b4a8f);color:#fff;box-shadow:0 8px 18px rgba(27,74,143,.24)}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .2s,box-shadow .2s,background .2s,color .2s,border-color .2s;
}
.btn:focus-visible{outline:3px solid rgba(47,121,216,.45);outline-offset:2px}
.btn-primary{background:linear-gradient(135deg,#2f79d8,#1b4a8f);color:#fff;box-shadow:0 10px 24px rgba(27,74,143,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(27,74,143,.34)}
.btn-primary:active{transform:translateY(0)}
.btn-light{background:#fff;color:#12325c;box-shadow:0 10px 22px rgba(9,25,48,.2)}
.btn-light:hover{transform:translateY(-2px)}
.btn-outline{background:#fff;color:var(--brand);border-color:#c9dbf5}
.btn-outline:hover{background:#eef4fd;border-color:#a9c6ea}
.btn-ghost{background:rgba(255,255,255,.12);color:#eaf2ff;border-color:rgba(255,255,255,.34)}
.btn-ghost:hover{background:rgba(255,255,255,.22)}
.btn-sm{padding:9px 18px;font-size:14px}

/* ============ article hero ============ */
.article-hero{padding:30px 0 34px;background:linear-gradient(180deg,#eaf1fc,#f4f7fc 88%)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:16px}
.crumb a{color:var(--brand)}
.crumb a:hover{text-decoration:underline}
.crumb .sep{color:#b7c5da}
.article-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--brand);background:#e6eefb;border-radius:999px;padding:5px 14px;margin-bottom:16px;
}
.article-hero h1{
  font-size:clamp(24px,3vw,36px);line-height:1.36;letter-spacing:-.4px;
  max-width:920px;margin:0;color:var(--ink);
}
.article-lead{margin:16px 0 0;max-width:840px;font-size:15.5px;color:var(--ink-2)}
.article-meta{display:flex;flex-wrap:wrap;gap:20px;margin-top:20px;font-size:13.5px;color:var(--muted)}
.article-meta span{display:inline-flex;align-items:center}
.article-meta i{color:var(--brand-2);margin-right:7px;font-size:13px}

/* ============ article layout ============ */
.article-wrap{padding:38px 0 20px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:26px;align-items:start}
.article-main{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 34px;box-shadow:var(--shadow-sm);min-width:0;
}
.article-body{font-size:16px;color:var(--ink-2);line-height:1.9;min-width:0}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  font-size:21px;line-height:1.5;color:var(--ink);margin:34px 0 14px;
  padding-left:14px;border-left:4px solid var(--brand-2);
}
.article-body h3{font-size:17.5px;line-height:1.6;color:var(--ink);margin:26px 0 10px}
.article-body h4{font-size:16px;color:var(--ink);margin:20px 0 8px}
.article-body p{margin:0 0 15px}
.article-body ul,.article-body ol{margin:0 0 16px;padding-left:22px}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:8px}
.article-body a{color:var(--brand-2);text-decoration:underline;text-underline-offset:3px}
.article-body blockquote{
  margin:20px 0;padding:14px 20px;background:#f2f7ff;
  border-left:4px solid var(--accent);border-radius:0 14px 14px 0;color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:20px auto;max-width:100%}
.article-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14.5px;display:block;overflow-x:auto}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 13px;text-align:left}
.article-body th{background:#f2f7ff;color:var(--ink);font-weight:600}
.article-body code{background:#eef3fb;padding:2px 6px;border-radius:6px;font-size:.92em}
.article-body hr{border:0;border-top:1px dashed var(--line);margin:26px 0}
.article-empty{padding:26px 0 8px;color:var(--ink-2)}
.article-empty strong{display:block;font-size:18px;color:var(--ink);margin-bottom:8px}
.article-empty a{color:var(--brand-2);text-decoration:underline}

/* ============ aside ============ */
.article-aside{display:grid;gap:16px;position:sticky;top:132px;min-width:0}
.aside-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:var(--shadow-sm);min-width:0}
.aside-card h3{font-size:15.5px;margin:0 0 12px;display:flex;align-items:center;gap:9px;color:var(--ink);line-height:1.5}
.aside-card h3 i{color:var(--brand-2);font-size:14px}
.aside-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.aside-list li{position:relative;padding-left:18px;font-size:13.8px;line-height:1.7;color:var(--ink-2)}
.aside-list li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;background:var(--accent)}
.aside-note{font-size:12.8px;color:var(--muted);line-height:1.7;margin:0}
.aside-link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:4px;
  padding:11px 14px;border-radius:12px;background:#f2f7ff;border:1px solid #dbe8fa;
  font-size:14px;font-weight:600;color:var(--brand);transition:background .2s,border-color .2s,transform .2s;
}
.aside-link:hover{background:#e6eefb;border-color:#bfd6f4;transform:translateX(2px)}
.aside-link i{font-size:12px}
.risk-aside{background:linear-gradient(160deg,#fff7e8,#fdf0d8);border-color:#f4dfb4}
.risk-aside h3 i{color:#c98a12}

/* ============ sections ============ */
.section{padding:60px 0}
.section--tight{padding:36px 0}
.section--alt{background:var(--bg-alt)}
.section-head{max-width:800px;margin-bottom:32px}
.section-head h2{font-size:clamp(21px,2.4vw,29px);line-height:1.4;letter-spacing:-.2px;margin:0;color:var(--ink)}
.section-head p{margin:12px 0 0;font-size:15.5px;color:var(--muted)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--brand);background:#e6eefb;border-radius:999px;padding:5px 14px;margin-bottom:14px;
}
.section--dark .eyebrow{background:rgba(47,121,216,.22);color:#a9cdfb}

/* ============ grids & cards ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.info-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;
  box-shadow:var(--shadow-sm);min-width:0;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.info-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#cfdff5}
.info-card .ic{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(135deg,#e8f1fd,#d9e8fb);color:var(--brand-2);font-size:18px;margin-bottom:14px;
}
.info-card h3{font-size:17px;margin:0 0 10px;color:var(--ink);line-height:1.5}
.info-card p{margin:0;font-size:14.6px;line-height:1.8;color:var(--ink-2)}
.info-card ul{margin:10px 0 0;padding-left:18px;font-size:14.4px;line-height:1.8;color:var(--ink-2)}
.info-card ul li{margin-bottom:6px}

.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.check-item{
  display:flex;gap:13px;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:17px 19px;min-width:0;box-shadow:var(--shadow-sm);
}
.check-item i{color:var(--accent);font-size:16px;margin-top:4px;flex:0 0 auto}
.check-item b{display:block;font-size:15px;color:var(--ink);margin-bottom:5px;line-height:1.5}
.check-item span{font-size:14px;color:var(--ink-2);line-height:1.75}

.step-list{display:grid;gap:14px}
.step-item{
  display:grid;grid-template-columns:48px minmax(0,1fr);gap:16px;align-items:start;
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 22px;
  box-shadow:var(--shadow-sm);min-width:0;
}
.step-no{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;
  background:linear-gradient(135deg,#1b4a8f,#2f79d8);color:#fff;font-weight:700;font-size:16px;
  box-shadow:0 8px 18px rgba(27,74,143,.24);
}
.step-item h3{font-size:16.5px;margin:0 0 7px;color:var(--ink);line-height:1.5}
.step-item p{margin:0;font-size:14.6px;line-height:1.8;color:var(--ink-2)}

/* ============ faq ============ */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow-sm)}
.faq-item summary{
  cursor:pointer;list-style:none;padding:18px 22px;font-weight:600;font-size:15.5px;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:14px;line-height:1.6;
  transition:background .2s;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:#f6faff}
.faq-item summary:focus-visible{outline:3px solid rgba(47,121,216,.4);outline-offset:-3px}
.faq-item summary::after{content:"+";font-size:20px;color:var(--brand-2);line-height:1;flex:0 0 auto}
.faq-item[open] summary::after{content:"–"}
.faq-body{padding:0 22px 19px;font-size:14.8px;line-height:1.85;color:var(--ink-2)}
.faq-body p{margin:0}

/* ============ download ============ */
.dl-band{
  border-radius:26px;padding:34px;color:#eaf2ff;
  background:linear-gradient(150deg,#0f2544 0%,#1b4a8f 58%,#2f79d8 100%);
  box-shadow:0 22px 46px rgba(16,38,73,.22);position:relative;overflow:hidden;
}
.dl-band::after{
  content:"";position:absolute;right:-110px;top:-120px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(22,184,166,.36),transparent 66%);pointer-events:none;
}
.dl-band h2{position:relative;font-size:clamp(20px,2.3vw,26px);line-height:1.45;margin:0;color:#fff}
.dl-band p{position:relative;margin:12px 0 0;font-size:14.8px;color:#c6d9f4;max-width:700px;line-height:1.8}
.dl-grid{position:relative;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:24px}
.dl-card{
  display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center;
  padding:20px 14px;border-radius:16px;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.18);color:#eaf2ff;min-width:0;
  transition:background .2s,transform .2s,border-color .2s;
}
.dl-card:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.36);transform:translateY(-3px)}
.dl-card:focus-visible{outline:3px solid rgba(255,255,255,.6);outline-offset:2px}
.dl-card i{font-size:22px;color:#9fd6ff}
.dl-card strong{font-size:15.5px;font-weight:600}
.dl-card span{font-size:12.6px;color:#b6cfee;line-height:1.5}
.dl-foot{position:relative;margin:18px 0 0;font-size:12.8px;color:#a8bedd}

/* ============ risk strip ============ */
.risk-strip{
  display:flex;gap:16px;align-items:flex-start;background:#fff7e8;border:1px solid #f4dfb4;
  border-radius:18px;padding:22px 24px;color:#7a5a15;min-width:0;
}
.risk-strip i{font-size:20px;color:#c98a12;margin-top:3px;flex:0 0 auto}
.risk-strip strong{display:block;font-size:15.5px;color:#6b4a08;margin-bottom:6px}
.risk-strip p{margin:0;font-size:14.5px;line-height:1.8;color:#7a5a15}

/* ============ footer ============ */
.site-footer{background:#0b1728;color:#b8cbe6;padding:52px 0 26px;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr) minmax(0,1fr);gap:34px}
.footer-brand{display:flex;align-items:center;gap:11px;color:#fff;font-size:18px;margin-bottom:14px}
.footer-brand .brand-mark{width:38px;height:38px;border-radius:11px;font-size:17px}
.footer-about{margin:0;font-size:14px;line-height:1.85;color:#9db4d3;max-width:520px}
.footer-col h3{font-size:15px;color:#fff;margin:4px 0 14px;font-weight:600}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.footer-col a{font-size:14px;color:#a3bada;transition:color .2s,transform .2s;display:inline-block}
.footer-col a:hover{color:#7fc4ff;transform:translateX(2px)}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12.8px;color:#8ba2c1;line-height:1.8;
}

/* ============ responsive ============ */
@media (min-width:900px){
  .topbar-tag{display:inline}
}
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-aside{position:static;grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .footer-grid > div:first-child{grid-column:1/-1}
}
@media (max-width:768px){
  .section{padding:46px 0}
  .article-main{padding:24px 20px;border-radius:18px}
  .article-wrap{padding:28px 0 12px}
  .check-grid{grid-template-columns:minmax(0,1fr)}
  .dl-band{padding:26px 22px;border-radius:20px}
  .dl-grid{grid-template-columns:minmax(0,1fr)}
  .dl-card{flex-direction:row;justify-content:flex-start;text-align:left;gap:14px;padding:16px 18px}
  .dl-card i{font-size:20px}
  .brand-text small{display:none}
  .step-item{grid-template-columns:40px minmax(0,1fr);padding:17px 16px;gap:13px}
  .step-no{width:40px;height:40px;border-radius:12px;font-size:15px}
}
@media (max-width:640px){
  .grid-3,.grid-2{grid-template-columns:minmax(0,1fr)}
  .article-aside{grid-template-columns:minmax(0,1fr)}
  .article-hero h1{font-size:23px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .risk-strip{flex-direction:row;padding:18px}
}
@media (max-width:520px){
  .container{padding-left:16px;padding-right:16px}
  .topbar-inner{min-height:66px}
  .brand-mark{width:38px;height:38px;border-radius:11px;font-size:17px}
  .brand-text strong{font-size:16px}
  .article-main{padding:20px 16px}
  .article-body h2{font-size:19px}
  .btn{padding:11px 18px;font-size:14.5px}
}

/* roulang page: category1 */
:root{
  --ink:#0e1c33;
  --ink-2:#283c5b;
  --brand:#1b4a8f;
  --brand-2:#2f79d8;
  --accent:#16b8a6;
  --gold:#e9a325;
  --bg:#f4f7fc;
  --bg-alt:#eef3fb;
  --card:#ffffff;
  --line:#e2e9f4;
  --muted:#5d708e;
  --radius:22px;
  --radius-sm:14px;
  --shadow-sm:0 2px 10px rgba(16,38,73,.06);
  --shadow:0 16px 40px rgba(16,38,73,.12);
}
*,*::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",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.7;color:var(--ink);background:var(--bg);
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;line-height:1.4}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}

/* ============ header ============ */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:74px}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-mark{
  width:44px;height:44px;flex:0 0 auto;border-radius:13px;
  background:linear-gradient(135deg,#1b4a8f,#2f79d8);color:#fff;
  display:grid;place-items:center;font-size:20px;font-weight:700;
  box-shadow:0 8px 18px rgba(27,74,143,.28);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-text strong{font-size:18px;letter-spacing:.5px;color:var(--ink);line-height:1.35}
.brand-text small{font-size:12px;color:var(--muted);letter-spacing:.3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.topbar-tag{display:none;font-size:12.5px;color:var(--muted);white-space:nowrap}
@media (min-width:1080px){.topbar-tag{display:inline}}
.channel-bar{border-top:1px solid var(--line);background:#fff}
.channel-track{display:flex;align-items:center;gap:8px;overflow-x:auto;padding:10px 0;scrollbar-width:none;-ms-overflow-style:none}
.channel-track::-webkit-scrollbar{display:none}
.channel{
  flex:0 0 auto;padding:8px 16px;border-radius:999px;font-size:14.5px;font-weight:500;
  color:var(--ink-2);border:1px solid transparent;
  transition:background .2s,color .2s,border-color .2s,box-shadow .2s;
}
.channel:hover{background:#eef4fd;color:var(--brand)}
.channel:focus-visible{outline:3px solid rgba(47,121,216,.45);outline-offset:2px}
.channel.is-active{background:linear-gradient(135deg,#2f79d8,#1b4a8f);color:#fff;box-shadow:0 8px 18px rgba(27,74,143,.24)}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .2s,box-shadow .2s,background .2s,color .2s,border-color .2s;
}
.btn:focus-visible{outline:3px solid rgba(47,121,216,.45);outline-offset:2px}
.btn-primary{background:linear-gradient(135deg,#2f79d8,#1b4a8f);color:#fff;box-shadow:0 10px 24px rgba(27,74,143,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(27,74,143,.34)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;color:var(--brand);border-color:#c9dbf5}
.btn-outline:hover{background:#eef4fd;border-color:#a9c6ea;transform:translateY(-2px)}
.btn-sm{padding:9px 18px;font-size:14px}

/* ============ sections ============ */
.section{padding:66px 0}
.section--alt{background:var(--bg-alt)}
.section--dark{background:linear-gradient(180deg,#0b1728,#122340);color:#dbe6f6}
.section-head{max-width:800px;margin-bottom:34px}
.section-head h2{font-size:clamp(22px,2.4vw,30px);letter-spacing:-.2px;color:var(--ink)}
.section-head p{margin-top:12px;font-size:15.5px;color:var(--muted)}
.section--dark .section-head h2{color:#fff}
.section--dark .section-head p{color:#a8bedd}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--brand);background:#e6eefb;border-radius:999px;padding:5px 14px;margin-bottom:14px;
}
.section--dark .eyebrow{background:rgba(47,121,216,.22);color:#a9cdfb}
.section-note{margin-top:22px;font-size:13.5px;color:#7b8ea9;line-height:1.8}

/* ============ category hero ============ */
.cat-hero{position:relative;padding:42px 0 58px;background:linear-gradient(180deg,#e9f0fc,#f4f7fc 82%);overflow:hidden}
.cat-hero::after{
  content:"";position:absolute;left:-120px;bottom:-140px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(22,184,166,.16),transparent 68%);pointer-events:none;
}
.cat-hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);gap:24px;align-items:start}
.hero-copy{min-width:0}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;align-self:flex-start;
  font-size:13px;font-weight:600;padding:6px 15px;border-radius:999px;
  background:#fff;border:1px solid #d8e5f8;color:var(--brand);box-shadow:var(--shadow-sm);
}
.hero-badge i{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block}
.cat-hero h1{margin-top:16px;font-size:clamp(26px,3.1vw,38px);line-height:1.32;letter-spacing:-.4px;color:#0d1f38}
.hero-lead{margin-top:16px;font-size:15.8px;color:#3c5473;max-width:700px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.quick-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.quick-link{
  font-size:13px;padding:7px 15px;border-radius:999px;background:#fff;
  border:1px solid var(--line);color:var(--brand);box-shadow:var(--shadow-sm);
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.quick-link:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(16,38,73,.12);border-color:#bcd4f2}
.hero-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow);min-width:0;
}
.hero-panel h2{font-size:16px;color:var(--ink);display:flex;align-items:center;gap:8px}
.hero-panel h2 i{width:8px;height:8px;border-radius:50%;background:var(--accent);display:inline-block}
.hero-panel .panel-sub{font-size:12.5px;color:#8496b0;margin-top:6px}
.panel-row{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:11px 0;border-bottom:1px dashed #e7eef9;font-size:14px;color:var(--ink-2);
}
.panel-row:last-of-type{border-bottom:0}
.panel-badge{
  flex:0 0 auto;font-size:12px;font-weight:600;padding:3px 10px;border-radius:999px;
  background:#e7f7f4;color:#0e8c7d;border:1px solid #c8eeE7;
}
.panel-badge.warn{background:#fdf3e2;color:#a5711a;border:1px solid #f3e0bd}
.gradient-strip{
  margin-top:16px;border-radius:var(--radius-sm);padding:14px 16px;color:#eaf2ff;
  background:linear-gradient(135deg,#1b4a8f,#2f79d8);
  box-shadow:0 12px 26px rgba(27,74,143,.26);
}
.gradient-strip strong{display:block;font-size:15px;color:#fff}
.gradient-strip span{font-size:12.5px;color:#c9dcf6}

/* ============ metrics ============ */
.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.metric-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:22px 20px 20px;box-shadow:var(--shadow-sm);min-width:0;
  transition:transform .2s,box-shadow .2s;
}
.metric-card::before{
  content:"";position:absolute;left:20px;right:20px;top:0;height:3px;border-radius:0 0 3px 3px;
  background:linear-gradient(90deg,#2f79d8,#16b8a6);
}
.metric-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.metric-value{font-size:clamp(22px,2.4vw,28px);font-weight:700;color:var(--brand);letter-spacing:-.5px;line-height:1.2}
.metric-label{margin-top:8px;font-size:14.5px;font-weight:600;color:var(--ink)}
.metric-note{margin-top:8px;font-size:13.5px;color:var(--muted);line-height:1.75}

/* ============ matrix ============ */
.matrix-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.matrix-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-sm);min-width:0;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.matrix-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe0f7}
.matrix-icon{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(135deg,#e7f0fd,#dbe9fc);color:var(--brand);
  font-size:15px;font-weight:700;margin-bottom:14px;
}
.matrix-card h3{font-size:17px;color:var(--ink)}
.matrix-card p{margin-top:10px;font-size:14.2px;color:#4a5f7d;line-height:1.78}

/* ============ compare ============ */
.compare-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.compare-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-sm);min-width:0;display:flex;flex-direction:column;
  transition:transform .2s,box-shadow .2s;
}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.compare-head{padding:20px 22px;background:linear-gradient(135deg,#f2f7fe,#e8f1fd);border-bottom:1px solid var(--line)}
.compare-head h3{font-size:17px;color:var(--brand)}
.compare-head span{display:inline-block;margin-top:8px;font-size:12.5px;color:#5d708e;background:#fff;border:1px solid var(--line);border-radius:999px;padding:3px 11px}
.compare-list{padding:8px 22px 20px;display:grid;gap:0}
.compare-item{padding:12px 0;border-bottom:1px dashed #e7eef9;min-width:0}
.compare-item:last-child{border-bottom:0}
.compare-item dt{font-size:12.5px;color:#8496b0;font-weight:600;letter-spacing:.2px}
.compare-item dd{margin:5px 0 0;font-size:14px;color:#374f70;line-height:1.72;overflow-wrap:break-word}

/* ============ timeline ============ */
.timeline{display:grid;gap:14px}
.timeline-item{
  display:grid;grid-template-columns:56px minmax(0,1fr);gap:16px;align-items:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:20px 22px;box-shadow:var(--shadow-sm);min-width:0;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.timeline-item:hover{transform:translateX(4px);box-shadow:var(--shadow);border-color:#cfe0f7}
.step-num{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  font-size:16px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,#2f79d8,#1b4a8f);
  box-shadow:0 8px 18px rgba(27,74,143,.24);
}
.timeline-item h3{font-size:16.5px;color:var(--ink)}
.timeline-item p{margin-top:8px;font-size:14.2px;color:#4a5f7d;line-height:1.78}

/* ============ insights ============ */
.insight-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.insight-card{
  display:flex;flex-direction:column;gap:10px;min-width:0;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow-sm);
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.insight-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe0f7}
.insight-cat{
  align-self:flex-start;font-size:12px;font-weight:600;color:var(--brand);
  background:#eaf2fd;border-radius:999px;padding:3px 12px;
}
.insight-title{font-size:16.5px;color:var(--ink);line-height:1.5;overflow-wrap:break-word}
.insight-desc{font-size:14px;color:#54688a;line-height:1.75;flex:1 1 auto;overflow-wrap:break-word}
.insight-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12.5px;color:#94a5bd;padding-top:10px;border-top:1px dashed #e7eef9}
.insight-more{color:var(--brand-2);font-weight:600}
.insight-empty{
  background:#fff;border:1px dashed #cddcf0;border-radius:var(--radius-sm);
  padding:34px 22px;text-align:center;color:#7b8ea9;font-size:14.5px;
}

/* ============ risk (dark) ============ */
.risk-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.risk-item{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-sm);padding:22px;min-width:0;
  transition:background .2s,border-color .2s;
}
.risk-item:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.24)}
.risk-item h3{font-size:16px;color:#fff;display:flex;align-items:center;gap:10px}
.risk-item h3 i{width:9px;height:9px;border-radius:50%;background:var(--gold);display:inline-block;flex:0 0 auto}
.risk-item p{margin-top:10px;font-size:14px;color:#a8bedd;line-height:1.8}

/* ============ calculator ============ */
.calc-wrap{
  display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:22px;align-items:start;
}
.calc-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm);min-width:0}
.calc-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:18px}
.calc-field{display:flex;flex-direction:column;gap:7px;min-width:0}
.calc-field label{font-size:13px;font-weight:600;color:#5d708e}
.calc-field input,.calc-field select{
  width:100%;padding:11px 14px;font-size:15px;color:var(--ink);
  background:#f8fbff;border:1px solid #d9e5f5;border-radius:12px;outline:none;
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.calc-field input:focus,.calc-field select:focus{
  border-color:var(--brand-2);background:#fff;box-shadow:0 0 0 4px rgba(47,121,216,.14);
}
.calc-submit{grid-column:1/-1;margin-top:4px}
.calc-result{
  background:linear-gradient(155deg,#0f2544,#1b4a8f 62%,#2f79d8);
  border-radius:var(--radius);padding:26px;color:#eaf2ff;box-shadow:var(--shadow);min-width:0;
}
.calc-result h3{font-size:16px;color:#fff}
.result-list{display:grid;gap:12px;margin-top:16px}
.result-row{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);
  border-radius:12px;padding:12px 16px;font-size:14px;color:#c6d9f4;min-width:0;
}
.result-row b{font-size:17px;color:#fff;white-space:nowrap}
.result-tip{margin-top:16px;font-size:12.5px;color:#a8c2e4;line-height:1.8}

/* ============ download ============ */
.download-card{
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:26px;align-items:center;
  border-radius:26px;padding:36px;color:#eaf2ff;
  background:linear-gradient(150deg,#0f2544,#1b4a8f 58%,#2f79d8);
  box-shadow:0 24px 50px rgba(16,38,73,.24);
}
.download-card::after{
  content:"";position:absolute;right:-110px;top:-110px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(22,184,166,.34),transparent 66%);pointer-events:none;
}
.download-copy{position:relative;min-width:0}
.download-copy .eyebrow{background:rgba(255,255,255,.14);color:#dbeafd;border:1px solid rgba(255,255,255,.22)}
.download-copy h2{font-size:clamp(21px,2.3vw,28px);color:#fff}
.download-copy p{margin-top:14px;font-size:15px;color:#c6d9f4;max-width:520px}
.download-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.download-points span{
  font-size:12.5px;padding:5px 13px;border-radius:999px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:#dbeafd;
}
.dl-grid{position:relative;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.dl-card{
  display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center;
  padding:18px 12px;border-radius:16px;background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.2);color:#eaf2ff;min-width:0;
  transition:transform .2s,background .2s,box-shadow .2s;
}
.dl-card:hover{transform:translateY(-3px);background:rgba(255,255,255,.2);box-shadow:0 14px 26px rgba(6,18,36,.3)}
.dl-card:focus-visible{outline:3px solid rgba(255,255,255,.6);outline-offset:2px}
.dl-card svg{width:22px;height:22px;stroke:#bfe3ff}
.dl-card strong{font-size:14.5px;color:#fff;font-weight:600}
.dl-card small{font-size:12px;color:#b6cfee;word-break:break-word}

/* ============ faq ============ */
.quick-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-bottom:28px}
.quick-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:22px;box-shadow:var(--shadow-sm);min-width:0;
  transition:transform .2s,box-shadow .2s;
}
.quick-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.quick-card h3{font-size:15.5px;color:var(--brand)}
.quick-card p{margin-top:10px;font-size:14px;color:#4a5f7d;line-height:1.78}
.faq-list{display:grid;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:4px 22px;box-shadow:var(--shadow-sm);min-width:0;
  transition:border-color .2s,box-shadow .2s;
}
.faq-item[open]{border-color:#c8dcf7;box-shadow:var(--shadow)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:16px 0;font-size:15.5px;font-weight:600;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:"+";flex:0 0 auto;font-size:19px;font-weight:400;color:var(--brand-2);
  transition:transform .2s;line-height:1;
}
.faq-item[open] summary::after{content:"−"}
.faq-item summary:focus-visible{outline:3px solid rgba(47,121,216,.4);outline-offset:4px;border-radius:8px}
.faq-answer{padding:0 0 18px;font-size:14.5px;color:#4a5f7d;line-height:1.82}

/* ============ footer ============ */
.site-footer{background:#0b1728;color:#adc0da;padding:56px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:34px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;color:#fff}
.footer-brand strong{font-size:17px;letter-spacing:.5px}
.footer-about{font-size:14px;line-height:1.82;color:#93a9c6;max-width:430px}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:14px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:#a9bfdb;transition:color .2s}
.footer-col a:hover{color:#fff}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;color:#7d92b0;line-height:1.7;
}

/* ============ responsive ============ */
@media (max-width:1024px){
  .cat-hero-grid{grid-template-columns:minmax(0,1fr)}
  .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .matrix-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .compare-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .insight-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .calc-wrap{grid-template-columns:minmax(0,1fr)}
  .download-card{grid-template-columns:minmax(0,1fr);padding:30px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .quick-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:768px){
  .section{padding:52px 0}
  .cat-hero{padding:30px 0 46px}
  .topbar-inner{min-height:66px}
  .brand-text small{display:none}
  .matrix-grid,.compare-grid,.insight-grid,.metric-grid,.risk-grid,.quick-grid{grid-template-columns:minmax(0,1fr)}
  .dl-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
  .calc-form{grid-template-columns:minmax(0,1fr)}
  .timeline-item{grid-template-columns:44px minmax(0,1fr);gap:12px;padding:18px}
  .step-num{width:38px;height:38px;font-size:15px;border-radius:11px}
}
@media (max-width:520px){
  .container{padding-left:16px;padding-right:16px}
  .topbar-right .topbar-tag{display:none}
  .brand-text strong{font-size:16px}
  .dl-grid{grid-template-columns:minmax(0,1fr)}
  .dl-card{flex-direction:row;justify-content:flex-start;gap:10px;padding:13px 16px;text-align:left}
  .dl-card small{display:none}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .download-card{padding:24px 20px;border-radius:20px}
  .hero-actions .btn{width:100%}
  .result-row{flex-direction:column;align-items:flex-start;gap:4px}
}