/* roulang page: index */
:root{
  --ink:#0a1a2b;
  --ink-2:#28394c;
  --muted:#63748a;
  --line:#e3e9f1;
  --bg:#f4f7fb;
  --surface:#ffffff;
  --brand:#0f9b8e;
  --brand-deep:#0a6d64;
  --brand-soft:#e6f6f4;
  --accent:#f0a92e;
  --accent-soft:#fdf3e0;
  --danger:#d9544a;
  --danger-soft:#fdeceb;
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(10,26,43,.06);
  --shadow:0 12px 32px rgba(10,26,43,.09);
  --shadow-lg:0 26px 64px rgba(10,26,43,.16);
  --space:clamp(48px,6vw,86px);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand-deep);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand);}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.32;font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,summary:focus-visible,.btn:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:3px;
  border-radius:10px;
}
.site-container{width:100%;max-width:1180px;margin:0 auto;padding:0 22px;}

/* header */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.93);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-shell{
  position:relative;
  display:flex;align-items:center;gap:18px;
  min-height:76px;padding:10px 0;
}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:13px;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#fff;display:grid;place-items:center;
  font-weight:700;font-size:15px;letter-spacing:.5px;
  box-shadow:0 8px 18px rgba(15,155,142,.28);
}
.brand-text strong{display:block;font-size:17px;color:var(--ink);line-height:1.3;}
.brand-text span{display:block;font-size:12px;color:var(--muted);line-height:1.4;}
.nav-panel{
  display:flex;align-items:center;gap:6px;
  margin-left:auto;
  background:#eff4f9;border:1px solid var(--line);
  border-radius:16px;padding:6px;
}
.nav-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 15px;border-radius:11px;
  font-size:14.5px;color:var(--ink-2);white-space:nowrap;
  transition:background .22s ease,color .22s ease,box-shadow .22s ease;
}
.nav-chip i{font-size:13px;color:var(--muted);transition:color .22s ease;}
.nav-chip:hover{background:#fff;color:var(--brand-deep);box-shadow:var(--shadow-sm);}
.nav-chip:hover i{color:var(--brand);}
.nav-chip.is-active{background:#fff;color:var(--brand-deep);font-weight:600;box-shadow:var(--shadow-sm);}
.nav-chip.is-active i{color:var(--brand);}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 20px;border-radius:12px;
  background:var(--brand);color:#fff;font-size:14.5px;font-weight:600;
  box-shadow:0 8px 20px rgba(15,155,142,.26);
  transition:background .22s ease,transform .22s ease,box-shadow .22s ease;
  white-space:nowrap;
}
.nav-cta:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(15,155,142,.34);}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--ink);
  font-size:16px;cursor:pointer;margin-left:auto;
  transition:background .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:var(--brand-soft);border-color:var(--brand);}

/* hero */
.hero{
  position:relative;overflow:hidden;
  background:radial-gradient(1100px 560px at 50% -12%,#17455f 0%,#0a1a2b 58%,#06121f 100%);
  color:#eaf2f8;
  padding:clamp(56px,8vw,104px) 0 clamp(78px,9vw,110px);
}
.hero-grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(70% 70% at 50% 30%,#000 30%,transparent 100%);
  -webkit-mask-image:radial-gradient(70% 70% at 50% 30%,#000 30%,transparent 100%);
  pointer-events:none;
}
.hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,18,31,0) 45%,rgba(6,18,31,.72) 100%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:860px;margin:0 auto;text-align:center;min-width:0;}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;
  padding:7px 16px;border-radius:999px;
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.22);
  font-size:13px;color:#cfe1ee;letter-spacing:.5px;
}
.hero-badge i{color:var(--accent);font-size:12px;}
.hero h1{
  color:#fff;margin-top:22px;
  font-size:clamp(25px,3.5vw,42px);
  letter-spacing:.5px;line-height:1.34;
}
.hero h1 em{font-style:normal;color:#5fd8c8;}
.hero-lead{
  margin:22px auto 0;max-width:780px;
  font-size:clamp(15px,1.35vw,16.8px);
  line-height:1.98;color:#aec2d2;
}
.hero-actions{
  display:flex;align-items:center;justify-content:center;
  gap:18px;flex-wrap:wrap;margin-top:34px;
}
.hero-play{
  width:62px;height:62px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.34);
  color:#fff;font-size:18px;
  transition:background .24s ease,transform .24s ease,border-color .24s ease;
}
.hero-play:hover{background:var(--brand);border-color:var(--brand);color:#fff;transform:translateY(-3px);}
.hero-play-label{font-size:13.5px;color:#9db3c5;}
.hero-strip{
  position:relative;z-index:2;
  margin-top:clamp(40px,5vw,64px);
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1px;background:rgba(255,255,255,.14);
  border-radius:16px;overflow:hidden;
}
.hero-strip-item{background:rgba(8,24,40,.62);padding:18px 16px;text-align:center;min-width:0;}
.hero-strip-item strong{display:block;color:#fff;font-size:14.8px;font-weight:600;}
.hero-strip-item span{display:block;font-size:12.8px;color:#8ba2b6;margin-top:5px;line-height:1.6;}

/* download band */
.download-band{position:relative;z-index:5;margin-top:-46px;}
.download-card{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);
  padding:clamp(22px,3vw,34px);
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1.1fr);
  gap:clamp(20px,3vw,34px);align-items:center;
}
.download-copy h2{font-size:clamp(19px,2.1vw,24px);}
.download-copy p{margin-top:12px;color:var(--muted);font-size:14.6px;line-height:1.88;}
.dl-note{margin-top:14px;font-size:12.8px;color:#8a9bad;line-height:1.7;}
.dl-buttons{display:grid;grid-template-columns:repeat(auto-fit,minmax(168px,1fr));gap:12px;}
.dl-btn{
  display:flex;align-items:center;gap:12px;
  padding:14px 18px;border-radius:12px;
  border:1px solid var(--line);background:#f8fbfd;
  color:var(--ink);font-weight:600;font-size:14.6px;
  transition:border-color .22s ease,background .22s ease,transform .22s ease,box-shadow .22s ease;
  min-width:0;
}
.dl-btn i{font-size:18px;color:var(--brand);flex-shrink:0;}
.dl-btn small{display:block;font-weight:400;font-size:12.2px;color:var(--muted);line-height:1.5;}
.dl-btn:hover{border-color:var(--brand);background:var(--brand-soft);color:var(--brand-deep);transform:translateY(-2px);box-shadow:var(--shadow);}

/* sections */
.section{padding:var(--space) 0;}
.section-white{background:#fff;}
.section-tint{background:linear-gradient(180deg,#f8fbfd,#f2f6fa);}
.section-head{max-width:780px;margin-bottom:clamp(26px,3vw,42px);}
.section-eyebrow{
  display:inline-block;font-size:12.8px;letter-spacing:2.4px;
  color:var(--brand);font-weight:700;margin-bottom:12px;
}
.section-head h2{font-size:clamp(21px,2.5vw,31px);}
.section-head p{margin-top:15px;color:var(--muted);font-size:15.4px;line-height:1.92;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

/* grids & cards */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;min-width:0;box-shadow:var(--shadow-sm);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cde6e2;}
.card h3{font-size:16.8px;margin-bottom:10px;}
.card p{color:var(--muted);font-size:14.4px;line-height:1.86;}
.card-icon{
  width:46px;height:46px;border-radius:13px;
  background:var(--brand-soft);color:var(--brand-deep);
  display:grid;place-items:center;font-size:18px;margin-bottom:16px;
}
.card-tag{
  display:inline-block;font-size:12px;font-weight:600;
  color:var(--brand-deep);background:var(--brand-soft);
  padding:3px 10px;border-radius:999px;margin-bottom:12px;
}

/* rail */
.rail{
  display:grid;grid-auto-flow:column;
  grid-auto-columns:minmax(266px,1fr);
  gap:16px;overflow-x:auto;padding:4px 4px 16px;
  scroll-snap-type:x proximity;
  -webkit-overflow-scrolling:touch;
}
.rail-card{
  scroll-snap-align:start;min-width:0;
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:20px;
  transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;
}
.rail-card:hover{border-color:#cde6e2;box-shadow:var(--shadow);transform:translateY(-3px);}
.rail-title{font-size:15.8px;margin-top:4px;line-height:1.55;}
.rail-title a{color:var(--ink);}
.rail-title a:hover{color:var(--brand-deep);}
.rail-desc{margin-top:8px;font-size:13.8px;color:var(--muted);line-height:1.8;}

/* news meta shared */
.news-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:9px;}
.tag{
  font-size:12px;padding:3px 10px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-deep);font-weight:600;
}
.news-date{font-size:12.6px;color:var(--muted);}

/* topic entry */
.topic-entry{
  display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);
  gap:clamp(20px,3vw,34px);align-items:center;
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:clamp(24px,3vw,38px);
  box-shadow:var(--shadow-sm);
}
.topic-entry h2{font-size:clamp(20px,2.3vw,27px);}
.topic-entry p{margin-top:14px;color:var(--muted);font-size:15px;line-height:1.92;}
.topic-entry-actions{margin-top:22px;display:flex;gap:12px;flex-wrap:wrap;}
.topic-points{display:grid;gap:12px;}
.topic-point{
  display:flex;gap:12px;align-items:flex-start;
  background:#f7fafc;border:1px solid var(--line);
  border-radius:12px;padding:14px 16px;min-width:0;
}
.topic-point i{color:var(--brand);font-size:15px;margin-top:4px;flex-shrink:0;}
.topic-point strong{display:block;font-size:14.6px;color:var(--ink);margin-bottom:3px;}
.topic-point span{font-size:13.4px;color:var(--muted);line-height:1.7;}

/* rank list */
.rank-list{display:grid;gap:12px;}
.rank-row{
  display:grid;grid-template-columns:46px minmax(0,1fr) auto;
  gap:16px;align-items:center;
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:16px 20px;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.rank-row:hover{border-color:#cde6e2;box-shadow:var(--shadow-sm);}
.rank-no{
  width:38px;height:38px;border-radius:11px;
  background:#eef4f9;color:var(--ink-2);
  display:grid;place-items:center;font-weight:700;font-size:14px;
}
.rank-body{min-width:0;}
.rank-body h3{font-size:15.6px;margin-bottom:4px;}
.rank-body p{font-size:13.8px;color:var(--muted);line-height:1.76;}
.rank-level{
  font-size:12.4px;padding:5px 13px;border-radius:999px;
  font-weight:600;white-space:nowrap;
}
.level-high{background:var(--danger-soft);color:#b8453c;}
.level-mid{background:var(--accent-soft);color:#a8730f;}
.level-low{background:var(--brand-soft);color:var(--brand-deep);}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.step{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:24px 20px;min-width:0;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cde6e2;}
.step-no{font-size:12.6px;font-weight:700;color:var(--brand);letter-spacing:1.6px;}
.step h3{font-size:16px;margin:10px 0 8px;}
.step p{font-size:13.9px;color:var(--muted);line-height:1.82;}

/* compare */
.compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.compare-card{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:26px;min-width:0;
}
.compare-card.is-accent{border-color:#f0d9a8;background:linear-gradient(180deg,#fffaf0,#fff);}
.compare-card h3{font-size:18px;margin-bottom:6px;}
.compare-sub{font-size:13.4px;color:var(--muted);margin-bottom:16px;}
.compare-list li{
  display:flex;gap:10px;padding:11px 0;
  border-top:1px dashed var(--line);
  font-size:14.2px;color:var(--ink-2);line-height:1.75;
}
.compare-list li:first-child{border-top:none;}
.compare-list i{color:var(--brand);margin-top:5px;font-size:12.5px;flex-shrink:0;}

/* checklist */
.checklist{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;}
.check-item{
  display:flex;gap:12px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:18px 20px;min-width:0;
}
.check-item i{color:var(--brand);font-size:16px;margin-top:4px;flex-shrink:0;}
.check-item strong{display:block;font-size:15px;color:var(--ink);margin-bottom:5px;}
.check-item span{font-size:13.7px;color:var(--muted);line-height:1.78;}

/* news layout */
.news-layout{
  display:grid;grid-template-columns:minmax(0,1.62fr) minmax(0,1fr);
  gap:26px;align-items:start;
}
.news-list{display:grid;gap:14px;}
.news-item{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:20px 22px;min-width:0;
  transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;
}
.news-item:hover{border-color:#cde6e2;box-shadow:var(--shadow);transform:translateY(-2px);}
.news-title{font-size:17px;line-height:1.5;}
.news-title a{color:var(--ink);}
.news-title a:hover{color:var(--brand-deep);}
.news-desc{margin-top:9px;font-size:14.2px;color:var(--muted);line-height:1.86;}
.news-side{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:22px;min-width:0;
}
.side-title{
  font-size:16px;margin-bottom:6px;padding-bottom:13px;
  border-bottom:1px solid var(--line);
}
.side-item{padding:12px 0;border-bottom:1px dashed var(--line);}
.side-item:last-child{border-bottom:none;}
.side-item a{font-size:14.2px;color:var(--ink-2);display:block;line-height:1.62;}
.side-item a:hover{color:var(--brand-deep);}
.side-meta{font-size:12.4px;color:var(--muted);margin-top:5px;}
.empty-note{
  padding:26px;background:#fff;border:1px dashed var(--line);
  border-radius:var(--radius);color:var(--muted);text-align:center;font-size:14.4px;
}
.list-more{margin-top:24px;}

/* faq */
.faq-list{display:grid;gap:12px;max-width:900px;}
.faq-item{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item[open]{border-color:#cde6e2;box-shadow:var(--shadow-sm);}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:18px 22px;font-weight:600;color:var(--ink);font-size:15.4px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-deep);}
.faq-item summary::after{
  content:"\f078";
  font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:11.5px;color:var(--muted);transition:transform .24s ease;
  flex-shrink:0;
}
.faq-item[open] summary::after{transform:rotate(180deg);}
.faq-body{
  padding:16px 22px 20px;color:var(--muted);
  font-size:14.4px;line-height:1.92;border-top:1px solid var(--line);
}

/* cta */
.cta-band{
  background:linear-gradient(120deg,#0a1a2b,#12394e 58%,#0d6b62);
  border-radius:var(--radius-lg);
  padding:clamp(26px,4vw,46px);
  color:#fff;
  display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);
  gap:26px;align-items:center;
  box-shadow:var(--shadow-lg);
}
.cta-band h2{color:#fff;font-size:clamp(20px,2.4vw,28px);}
.cta-band p{color:#b4c8d6;margin-top:13px;font-size:14.8px;line-height:1.9;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end;}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:12px 24px;border-radius:12px;
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:background .22s ease,color .22s ease,transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px rgba(15,155,142,.28);}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(15,155,142,.34);}
.btn-light{background:#fff;color:var(--brand-deep);border-color:var(--line);}
.btn-light:hover{color:var(--brand-deep);box-shadow:var(--shadow);transform:translateY(-2px);}
.btn-ghost{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.38);}
.btn-ghost:hover{background:rgba(255,255,255,.2);color:#fff;transform:translateY(-2px);}
.btn-outline{background:transparent;color:var(--brand-deep);border-color:var(--brand);}
.btn-outline:hover{background:var(--brand);color:#fff;transform:translateY(-2px);}

/* footer */
.site-footer{
  background:#081420;color:#9fb2c3;
  padding:clamp(44px,5vw,66px) 0 26px;
  margin-top:var(--space);
}
.footer-grid{
  display:grid;grid-template-columns:minmax(0,1.5fr) repeat(2,minmax(0,1fr));
  gap:clamp(24px,3vw,40px);
}
.footer-brand strong{display:block;color:#fff;font-size:17.5px;margin-bottom:12px;}
.footer-brand p{font-size:13.8px;line-height:1.94;color:#8fa4b7;}
.footer-col h4{color:#fff;font-size:14.6px;margin-bottom:14px;letter-spacing:.5px;}
.footer-col a{display:block;font-size:13.8px;color:#9fb2c3;padding:6px 0;transition:color .2s ease,transform .2s ease;}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.risk-note{
  margin-top:30px;padding:15px 18px;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.1);
  border-radius:12px;font-size:13px;color:#93a8bb;line-height:1.86;
}
.footer-bottom{
  margin-top:26px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:#7f93a6;
}

/* responsive */
@media (max-width:1024px){
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .nav-panel{
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    margin-left:0;display:none;flex-direction:column;align-items:stretch;
    background:#fff;border:1px solid var(--line);
    box-shadow:var(--shadow-lg);border-radius:16px;padding:10px;gap:4px;
  }
  .nav-panel.is-open{display:flex;}
  .nav-chip{justify-content:flex-start;padding:12px 14px;}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .news-layout{grid-template-columns:minmax(0,1fr);}
  .download-card{grid-template-columns:minmax(0,1fr);}
  .cta-band{grid-template-columns:minmax(0,1fr);}
  .cta-actions{justify-content:flex-start;}
  .topic-entry{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:820px){
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .compare-grid{grid-template-columns:minmax(0,1fr);}
  .checklist{grid-template-columns:minmax(0,1fr);}
  .hero-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:768px){
  .grid-3,.grid-2,.grid-4,.steps{grid-template-columns:minmax(0,1fr);}
  .brand-text span{display:none;}
  .rank-row{grid-template-columns:40px minmax(0,1fr);row-gap:10px;}
  .rank-level{grid-column:2;justify-self:start;}
  .rail{grid-auto-columns:minmax(238px,1fr);}
}
@media (max-width:520px){
  .site-container{padding:0 16px;}
  .hero{padding-top:44px;}
  .hero-actions{gap:14px;}
  .dl-buttons{grid-template-columns:minmax(0,1fr);}
  .btn{width:100%;}
  .hero-play{width:56px;height:56px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{flex-direction:column;}
  .topic-entry-actions .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .download-band{margin-top:-30px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}

/* roulang page: article */
:root{
  --ink:#0a1a2b;
  --ink-2:#28394c;
  --muted:#63748a;
  --line:#e3e9f1;
  --bg:#f4f7fb;
  --surface:#ffffff;
  --brand:#0f9b8e;
  --brand-deep:#0a6d64;
  --brand-soft:#e6f6f4;
  --accent:#f0a92e;
  --accent-soft:#fdf3e0;
  --danger:#d9544a;
  --danger-soft:#fdeceb;
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(10,26,43,.06);
  --shadow:0 12px 32px rgba(10,26,43,.09);
  --shadow-lg:0 26px 64px rgba(10,26,43,.16);
  --space:clamp(48px,6vw,86px);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand-deep);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand);}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,summary:focus-visible,.btn:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:3px;
  border-radius:10px;
}
.site-container{width:100%;max-width:1180px;margin:0 auto;padding:0 22px;}
/* header */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.93);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-shell{
  position:relative;
  display:flex;align-items:center;gap:18px;
  min-height:76px;padding:10px 0;
  flex-wrap:wrap;
}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:13px;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#fff;display:grid;place-items:center;
  font-weight:700;font-size:15px;letter-spacing:.5px;
  box-shadow:0 8px 18px rgba(15,155,142,.28);
}
.brand-text strong{display:block;font-size:17px;color:var(--ink);line-height:1.3;}
.brand-text span{display:block;font-size:12px;color:var(--muted);line-height:1.4;}
.nav-panel{
  display:flex;align-items:center;gap:6px;
  margin-left:auto;
  background:#eff4f9;border:1px solid var(--line);
  border-radius:16px;padding:6px;
}
.nav-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 15px;border-radius:11px;
  font-size:14.5px;color:var(--ink-2);white-space:nowrap;
  transition:background .22s ease,color .22s ease,box-shadow .22s ease;
}
.nav-chip i{font-size:13px;color:var(--muted);transition:color .22s ease;}
.nav-chip:hover{background:#fff;color:var(--brand-deep);box-shadow:var(--shadow-sm);}
.nav-chip:hover i{color:var(--brand);}
.nav-chip.is-active{background:#fff;color:var(--brand-deep);font-weight:600;box-shadow:var(--shadow-sm);}
.nav-chip.is-active i{color:var(--brand);}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 20px;border-radius:12px;
  background:var(--brand);color:#fff;font-size:14.5px;font-weight:600;
  box-shadow:0 8px 20px rgba(15,155,142,.26);
  transition:background .22s ease,transform .22s ease,box-shadow .22s ease;
  white-space:nowrap;
}
.nav-cta:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(15,155,142,.34);}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--ink);
  font-size:16px;cursor:pointer;margin-left:auto;
  transition:background .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:var(--brand-soft);border-color:var(--brand);}
/* article hero */
.article-hero{
  position:relative;
  background:radial-gradient(1000px 460px at 18% -20%,#1b4a63 0%,#0c2133 55%,#071523 100%);
  color:#e9f2f8;
  padding:clamp(34px,5vw,58px) 0 clamp(34px,5vw,54px);
  overflow:hidden;
}
.article-hero::after{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:54px 54px;
  mask-image:radial-gradient(80% 90% at 20% 0%,#000 20%,transparent 100%);
  -webkit-mask-image:radial-gradient(80% 90% at 20% 0%,#000 20%,transparent 100%);
  pointer-events:none;
}
.article-hero .site-container{position:relative;z-index:2;}
.crumb{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:13px;color:#93aec1;margin-bottom:20px;
}
.crumb a{color:#b9cedd;}
.crumb a:hover{color:#5fd8c8;}
.crumb i{font-size:10px;color:#5f7b90;}
.article-kicker{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.2);
  font-size:12.5px;color:#cfe1ee;letter-spacing:.4px;
}
.article-kicker i{color:var(--accent);font-size:11px;}
.article-hero h1{
  color:#fff;
  margin:18px 0 0;
  font-size:clamp(23px,3vw,36px);
  line-height:1.42;
  letter-spacing:.3px;
  max-width:960px;
}
.article-meta{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  margin-top:22px;
}
.meta-pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:10px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);
  font-size:13px;color:#c2d6e4;
}
.meta-pill i{font-size:12px;color:#6fd4c5;}
/* layout */
.article-wrap{
  padding:clamp(34px,4vw,56px) 0 var(--space);
}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:clamp(22px,2.6vw,34px);
  align-items:start;
}
.article-main{min-width:0;}
.article-side{min-width:0;display:grid;gap:18px;position:sticky;top:96px;}
/* content card */
.content-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
  padding:clamp(22px,3vw,42px);
  min-width:0;
  overflow-wrap:break-word;
}
.content-card .article-body{font-size:16.5px;line-height:2;color:var(--ink-2);}
.content-card .article-body > *:first-child{margin-top:0;}
.content-card .article-body p{margin:0 0 18px;}
.content-card .article-body h2{
  font-size:clamp(19px,2vw,23px);
  color:var(--ink);
  margin:34px 0 14px;
  padding-left:14px;
  border-left:4px solid var(--brand);
  line-height:1.5;
}
.content-card .article-body h3{
  font-size:17.5px;
  color:var(--ink);
  margin:26px 0 12px;
  line-height:1.55;
}
.content-card .article-body ul,
.content-card .article-body ol{margin:0 0 18px;padding-left:22px;}
.content-card .article-body li{margin-bottom:9px;}
.content-card .article-body img{border-radius:var(--radius);margin:18px 0;box-shadow:var(--shadow-sm);}
.content-card .article-body blockquote{
  margin:22px 0;padding:18px 22px;
  background:var(--brand-soft);
  border-left:4px solid var(--brand);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--ink);
  font-size:16px;
}
.content-card .article-body table{width:100%;border-collapse:collapse;margin:18px 0;font-size:15px;}
.content-card .article-body th,
.content-card .article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;}
.content-card .article-body th{background:#f0f5f9;color:var(--ink);}
.content-card .article-body a{text-decoration:underline;text-underline-offset:3px;}
/* pull quote */
.pull-quote{
  margin:26px 0;
  padding:clamp(20px,2.4vw,28px);
  background:linear-gradient(135deg,#0a1a2b,#12405a);
  border-radius:var(--radius);
  color:#dbe9f3;
  position:relative;
  overflow:hidden;
}
.pull-quote::before{
  content:"\201C";
  position:absolute;top:-18px;left:14px;
  font-size:96px;line-height:1;color:rgba(95,216,200,.18);
  font-family:Georgia,serif;
}
.pull-quote p{margin:0;font-size:16px;line-height:1.9;position:relative;z-index:1;}
/* side cards */
.side-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
  padding:20px;
  min-width:0;
}
.side-card h3{
  font-size:15px;color:var(--ink);margin:0 0 14px;
  display:flex;align-items:center;gap:8px;
}
.side-card h3 i{color:var(--brand);font-size:13px;}
.side-list{list-style:none;margin:0;padding:0;}
.side-list li{
  border-bottom:1px dashed var(--line);
  padding:10px 0;
  font-size:14.2px;
  line-height:1.65;
}
.side-list li:last-child{border-bottom:none;padding-bottom:0;}
.side-list li span{display:block;color:var(--muted);font-size:12.5px;margin-top:4px;}
.side-links{display:grid;gap:10px;}
.side-link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 14px;border-radius:var(--radius-sm);
  background:#f2f7fa;border:1px solid var(--line);
  font-size:14px;color:var(--ink-2);
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.side-link:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-deep);transform:translateX(2px);}
.side-link i{font-size:12px;color:var(--brand);}
.risk-side{
  background:var(--danger-soft);
  border:1px solid #f6d3d0;
  border-radius:var(--radius);
  padding:18px 20px;
  font-size:13.8px;color:#7d3a34;line-height:1.8;
}
.risk-side strong{display:block;color:#a93b31;margin-bottom:8px;font-size:14.5px;}
/* download band */
.download-band{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
  padding:clamp(22px,3vw,34px);
  margin-top:clamp(22px,3vw,32px);
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);
  gap:clamp(18px,2.6vw,32px);
  align-items:center;
  scroll-margin-top:96px;
}
.download-band h2{
  font-size:clamp(18px,2.1vw,22px);
  color:var(--ink);margin:0 0 10px;line-height:1.5;
}
.download-band p{margin:0;font-size:14px;color:var(--muted);line-height:1.85;}
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;min-width:0;}
.dl-btn{
  display:flex;flex-direction:column;align-items:flex-start;gap:6px;
  padding:14px 16px;border-radius:var(--radius-sm);
  background:#f2f7fa;border:1px solid var(--line);
  color:var(--ink-2);min-width:0;
  transition:background .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.dl-btn i{font-size:16px;color:var(--brand);}
.dl-btn strong{font-size:14px;color:var(--ink);line-height:1.4;}
.dl-btn span{font-size:12px;color:var(--muted);line-height:1.5;}
.dl-btn:hover{
  background:var(--brand);border-color:var(--brand);
  transform:translateY(-3px);box-shadow:0 12px 24px rgba(15,155,142,.24);
}
.dl-btn:hover i,.dl-btn:hover strong,.dl-btn:hover span{color:#fff;}
/* related */
.related-block{margin-top:clamp(22px,3vw,32px);}
.related-block h2{
  font-size:clamp(18px,2.1vw,22px);color:var(--ink);
  margin:0 0 18px;
}
.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;min-width:0;}
.related-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:18px 20px;
  min-width:0;
  transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;
}
.related-card:hover{border-color:var(--brand);box-shadow:var(--shadow);transform:translateY(-2px);}
.related-card strong{display:block;font-size:15.2px;color:var(--ink);line-height:1.6;margin-bottom:8px;}
.related-card p{margin:0;font-size:13.6px;color:var(--muted);line-height:1.8;}
/* empty */
.empty-box{
  text-align:center;padding:clamp(40px,6vw,70px) 22px;
}
.empty-box i{font-size:38px;color:#b6c6d4;}
.empty-box h2{font-size:20px;color:var(--ink);margin:18px 0 10px;}
.empty-box p{color:var(--muted);font-size:14.5px;margin:0 0 22px;}
.btn-primary{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 24px;border-radius:12px;
  background:var(--brand);color:#fff;font-size:14.5px;font-weight:600;
  box-shadow:0 8px 20px rgba(15,155,142,.26);
  transition:background .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(15,155,142,.34);}
/* footer */
.site-footer{
  background:#08192a;color:#93aabf;
  padding:clamp(38px,5vw,58px) 0 26px;
  margin-top:0;
}
.footer-grid{
  display:grid;grid-template-columns:minmax(0,1.6fr) repeat(2,minmax(0,1fr));
  gap:clamp(22px,3vw,40px);
}
.footer-brand strong{display:block;color:#fff;font-size:18px;margin-bottom:12px;}
.footer-brand p{margin:0;font-size:13.8px;line-height:1.9;color:#8ba3b9;}
.footer-col h4{color:#fff;font-size:14.5px;margin:0 0 12px;}
.footer-col a{display:block;font-size:13.8px;color:#93aabf;padding:5px 0;transition:color .2s ease,transform .2s ease;}
.footer-col a:hover{color:#5fd8c8;transform:translateX(2px);}
.risk-note{
  margin-top:clamp(26px,3vw,36px);
  padding:16px 20px;
  background:rgba(217,84,74,.12);
  border:1px solid rgba(217,84,74,.3);
  border-radius:var(--radius-sm);
  font-size:13px;line-height:1.85;color:#d9b6b2;
}
.footer-bottom{
  margin-top:22px;padding-top:18px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;flex-wrap:wrap;
  font-size:13px;color:#7b93a9;
}
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-side{position:static;grid-template-columns:repeat(2,minmax(0,1fr));}
  .download-band{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:768px){
  .nav-toggle{display:flex;}
  .nav-panel{
    display:none;width:100%;flex-direction:column;align-items:stretch;
    margin:8px 0 0;padding:8px;border-radius:16px;
  }
  .nav-panel.is-open{display:flex;}
  .nav-chip{justify-content:flex-start;padding:11px 14px;font-size:15px;}
  .nav-cta{display:none;}
  .article-side{grid-template-columns:minmax(0,1fr);}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .dl-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
}
@media (max-width:520px){
  .content-card{padding:20px 16px;border-radius:16px;}
  .content-card .article-body{font-size:16px;}
  .article-hero h1{font-size:21px;}
  .meta-pill{font-size:12.3px;padding:6px 11px;}
  .nav-shell{min-height:68px;}
  .brand-text span{display:none;}
}

/* roulang page: category1 */
:root{
  --ink:#0a1a2b;
  --ink-2:#28394c;
  --muted:#63748a;
  --line:#e3e9f1;
  --bg:#f4f7fb;
  --surface:#ffffff;
  --brand:#0f9b8e;
  --brand-deep:#0a6d64;
  --brand-soft:#e6f6f4;
  --accent:#f0a92e;
  --accent-soft:#fdf3e0;
  --danger:#d9544a;
  --danger-soft:#fdeceb;
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(10,26,43,.06);
  --shadow:0 12px 32px rgba(10,26,43,.09);
  --shadow-lg:0 26px 64px rgba(10,26,43,.16);
  --space:clamp(48px,6vw,86px);
}
html{-webkit-text-size-adjust:100%;}
*,*::before,*::after{box-sizing:border-box;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand-deep);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand);}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--ink);line-height:1.4;margin:0;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a:focus-visible,button:focus-visible,summary:focus-visible,.btn:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:3px;
  border-radius:10px;
}
.site-container{width:100%;max-width:1180px;margin:0 auto;padding:0 22px;}

/* header */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.93);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-shell{
  position:relative;
  display:flex;align-items:center;gap:18px;
  min-height:76px;padding:10px 22px;
}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:13px;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#fff;display:grid;place-items:center;
  font-weight:700;font-size:15px;letter-spacing:.5px;
  box-shadow:0 8px 18px rgba(15,155,142,.28);
}
.brand-text strong{display:block;font-size:17px;color:var(--ink);line-height:1.3;}
.brand-text span{display:block;font-size:12px;color:var(--muted);line-height:1.4;}
.nav-panel{
  display:flex;align-items:center;gap:6px;
  margin-left:auto;
  background:#eff4f9;border:1px solid var(--line);
  border-radius:16px;padding:6px;
}
.nav-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 15px;border-radius:11px;
  font-size:14.5px;color:var(--ink-2);white-space:nowrap;
  transition:background .22s ease,color .22s ease,box-shadow .22s ease;
}
.nav-chip i{font-size:13px;color:var(--muted);transition:color .22s ease;}
.nav-chip:hover{background:#fff;color:var(--brand-deep);box-shadow:var(--shadow-sm);}
.nav-chip:hover i{color:var(--brand);}
.nav-chip.is-active{background:#fff;color:var(--brand-deep);font-weight:600;box-shadow:var(--shadow-sm);}
.nav-chip.is-active i{color:var(--brand);}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 20px;border-radius:12px;
  background:var(--brand);color:#fff;font-size:14.5px;font-weight:600;
  box-shadow:0 8px 20px rgba(15,155,142,.26);
  transition:background .22s ease,transform .22s ease,box-shadow .22s ease;
  white-space:nowrap;
}
.nav-cta:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(15,155,142,.34);}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--ink);
  font-size:16px;cursor:pointer;margin-left:auto;
  transition:background .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:var(--brand-soft);border-color:var(--brand);}

/* layout */
.section{padding:var(--space) 0;}
.section--tight{padding:clamp(36px,4.4vw,60px) 0;}
.section--alt{background:var(--surface);}
.section--ink{background:#08182a;color:#c6d6e4;}
.section-head{max-width:820px;margin-bottom:clamp(26px,3vw,40px);}
.section-head h2{font-size:clamp(21px,2.5vw,31px);letter-spacing:.2px;}
.section-head p{margin-top:12px;color:var(--muted);font-size:15.6px;line-height:1.95;}
.section--ink .section-head h2{color:#fff;}
.section--ink .section-head p{color:#9fb6c9;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-deep);
  font-size:12.8px;font-weight:600;letter-spacing:.6px;
  margin-bottom:16px;
}
.section--ink .eyebrow{background:rgba(15,155,142,.18);color:#5fd8c8;}

/* hero */
.risk-hero{
  position:relative;overflow:hidden;
  background:radial-gradient(1000px 520px at 18% -18%,#17455f 0%,#0a1a2b 56%,#06121f 100%);
  color:#eaf2f8;
  padding:clamp(48px,6vw,82px) 0 clamp(52px,6vw,86px);
}
.risk-hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(72% 66% at 30% 18%,#000 26%,transparent 100%);
  -webkit-mask-image:radial-gradient(72% 66% at 30% 18%,#000 26%,transparent 100%);
  pointer-events:none;
}
.risk-hero .site-container{position:relative;z-index:2;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:#8ba2b6;margin-bottom:20px;flex-wrap:wrap;}
.crumb a{color:#bcd0df;}
.crumb a:hover{color:#5fd8c8;}
.hero-flex{
  display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,1fr);
  gap:clamp(26px,4vw,52px);align-items:start;
}
.hero-copy h1{
  color:#fff;font-size:clamp(23px,3vw,37px);line-height:1.42;letter-spacing:.3px;
}
.hero-copy h1 em{font-style:normal;color:#5fd8c8;}
.hero-lead{margin-top:18px;color:#aec2d2;font-size:clamp(14.6px,1.3vw,16.4px);line-height:2;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:12px 22px;border-radius:12px;border:1px solid transparent;
  font-size:14.8px;font-weight:600;cursor:pointer;
  transition:background .22s ease,color .22s ease,transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px rgba(15,155,142,.3);}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(15,155,142,.38);}
.btn-ghost{background:rgba(255,255,255,.08);color:#e7f1f8;border-color:rgba(255,255,255,.3);}
.btn-ghost:hover{background:rgba(255,255,255,.16);color:#fff;transform:translateY(-2px);}
.btn-outline{background:#fff;color:var(--brand-deep);border-color:var(--line);box-shadow:var(--shadow-sm);}
.btn-outline:hover{border-color:var(--brand);color:var(--brand-deep);transform:translateY(-2px);box-shadow:var(--shadow);}

/* before after */
.compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.compare-card{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-lg);
  padding:22px 20px;min-width:0;
  backdrop-filter:blur(4px);
}
.compare-card.is-before{border-top:3px solid var(--danger);}
.compare-card.is-after{border-top:3px solid var(--brand);}
.compare-title{display:flex;align-items:center;gap:9px;font-size:14.5px;font-weight:600;color:#fff;letter-spacing:.4px;}
.compare-title i{font-size:13px;}
.is-before .compare-title i{color:#f39b93;}
.is-after .compare-title i{color:#5fd8c8;}
.compare-card ul{margin-top:14px;display:grid;gap:10px;}
.compare-card li{
  position:relative;padding-left:18px;
  font-size:13.8px;line-height:1.8;color:#a9bfd0;min-width:0;
}
.compare-card li::before{
  content:"";position:absolute;left:0;top:9px;
  width:6px;height:6px;border-radius:50%;background:#5d7d96;
}
.is-before li::before{background:#c97068;}
.is-after li::before{background:#38b6a5;}

/* metric strip */
.metric-strip{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-sm);
}
.metric-item{background:#fff;padding:24px 22px;min-width:0;}
.metric-item i{color:var(--brand);font-size:17px;}
.metric-item strong{display:block;margin-top:10px;font-size:16px;color:var(--ink);}
.metric-item span{display:block;margin-top:8px;font-size:13.8px;color:var(--muted);line-height:1.85;}

/* cards */
.risk-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.risk-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;min-width:0;box-shadow:var(--shadow-sm);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.risk-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe4e1;}
.risk-card .rc-icon{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand-deep);font-size:16px;margin-bottom:14px;
}
.risk-card:nth-child(3n+2) .rc-icon{background:var(--accent-soft);color:#9a6a12;}
.risk-card:nth-child(3n) .rc-icon{background:var(--danger-soft);color:#a83b32;}
.risk-card h3{font-size:16.4px;margin-bottom:9px;}
.risk-card p{font-size:14.2px;color:var(--muted);line-height:1.9;}

/* scenario */
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.scene-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:0;overflow:hidden;min-width:0;box-shadow:var(--shadow-sm);
  display:flex;flex-direction:column;
}
.scene-head{
  padding:16px 20px;font-size:14.6px;font-weight:600;
  background:#f8fbfd;border-bottom:1px solid var(--line);color:var(--ink);
  display:flex;align-items:center;gap:9px;
}
.scene-head i{font-size:13px;color:var(--brand);}
.scene-body{padding:20px;display:grid;gap:12px;flex:1;}
.scene-body dl{display:flex;justify-content:space-between;gap:12px;margin:0;font-size:14px;color:var(--muted);min-width:0;}
.scene-body dl dt{flex:0 0 auto;}
.scene-body dl dd{margin:0;font-weight:600;color:var(--ink-2);text-align:right;min-width:0;}
.scene-body dl dd.is-up{color:#0b8a7c;}
.scene-body dl dd.is-down{color:var(--danger);}
.scene-note{font-size:12.8px;color:#8a9bad;line-height:1.75;padding:0 20px 18px;}
.scene-foot{
  margin-top:auto;padding:12px 20px;border-top:1px dashed var(--line);
  font-size:12.9px;color:var(--muted);
}
.calc-note{
  margin-top:18px;font-size:13.4px;color:var(--muted);
  background:#fff;border:1px dashed #cfdce8;border-radius:var(--radius-sm);
  padding:14px 18px;line-height:1.85;
}

/* checklist */
.check-panel{
  display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.35fr);
  gap:clamp(22px,3.4vw,44px);align-items:start;
}
.check-list{display:grid;gap:12px;}
.check-item{
  display:flex;gap:14px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:16px 18px;min-width:0;box-shadow:var(--shadow-sm);
}
.check-item .ci-num{
  flex:0 0 30px;width:30px;height:30px;border-radius:9px;
  display:grid;place-items:center;background:var(--brand-soft);
  color:var(--brand-deep);font-size:13px;font-weight:700;
}
.check-item h3{font-size:15px;margin-bottom:5px;}
.check-item p{font-size:13.8px;color:var(--muted);line-height:1.85;}

/* faq */
.faq-list{display:grid;gap:12px;max-width:920px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:#cfe4e1;}
.faq-item summary{
  list-style:none;cursor:pointer;padding:17px 22px;
  font-size:15.2px;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:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:11px;color:var(--muted);transition:transform .22s ease;
}
.faq-item[open] summary{color:var(--brand-deep);}
.faq-item[open] summary::after{transform:rotate(180deg);color:var(--brand);}
.faq-body{padding:0 22px 20px;font-size:14.3px;color:var(--muted);line-height:1.95;}

/* posts */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.post-card{
  display:flex;flex-direction:column;gap:10px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;min-width:0;box-shadow:var(--shadow-sm);color:inherit;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe4e1;color:inherit;}
.post-tag{
  align-self:flex-start;font-size:12.4px;padding:4px 11px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-deep);font-weight:600;
}
.post-card h3{font-size:15.8px;line-height:1.6;}
.post-card p{font-size:13.8px;color:var(--muted);line-height:1.85;flex:1;}
.post-date{font-size:12.6px;color:#93a3b4;display:inline-flex;align-items:center;gap:7px;}
.post-empty{
  background:#fff;border:1px dashed #cfdce8;border-radius:var(--radius);
  padding:26px;text-align:center;color:var(--muted);font-size:14.4px;
}
.list-foot{margin-top:26px;display:flex;justify-content:center;}

/* download */
.download-panel{
  background:linear-gradient(135deg,#0a1a2b 0%,#12455c 100%);
  border-radius:var(--radius-lg);
  padding:clamp(26px,4vw,46px);
  color:#eaf2f8;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.12fr);
  gap:clamp(22px,3.4vw,42px);align-items:center;
  box-shadow:var(--shadow-lg);
}
.download-panel h2{color:#fff;font-size:clamp(20px,2.4vw,28px);}
.download-panel p{margin-top:12px;color:#a9bfd0;font-size:14.6px;line-height:1.9;}
.dl-buttons{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;}
.dl-btn{
  display:flex;flex-direction:column;gap:3px;
  padding:14px 16px;border-radius:12px;
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.24);
  color:#fff;min-width:0;
  transition:background .22s ease,border-color .22s ease,transform .22s ease;
}
.dl-btn i{font-size:15px;color:#5fd8c8;}
.dl-btn strong{font-size:14.8px;color:#fff;}
.dl-btn span{font-size:12.4px;color:#9fb6c9;}
.dl-btn:hover{background:var(--brand);border-color:var(--brand);transform:translateY(-3px);color:#fff;}
.dl-btn:hover i,.dl-btn:hover strong,.dl-btn:hover span{color:#fff;}

/* cta */
.cta-band{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:clamp(24px,3.6vw,40px);
  display:flex;align-items:center;justify-content:space-between;gap:22px;flex-wrap:wrap;
  box-shadow:var(--shadow-sm);
}
.cta-band h2{font-size:clamp(18px,2.2vw,24px);}
.cta-band p{margin-top:10px;color:var(--muted);font-size:14.4px;line-height:1.9;max-width:640px;}

/* footer */
.site-footer{background:#08182a;color:#9fb6c9;padding:clamp(42px,5vw,66px) 0 30px;margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr) minmax(0,1fr);
  gap:clamp(22px,3.4vw,44px);
}
.footer-brand strong{color:#fff;font-size:17px;display:block;}
.footer-brand p{margin-top:12px;font-size:13.6px;line-height:1.95;color:#8ba2b6;}
.footer-col h4{color:#fff;font-size:14.6px;margin-bottom:14px;}
.footer-col a{display:block;color:#9fb6c9;font-size:13.8px;padding:5px 0;transition:color .2s ease,transform .2s ease;}
.footer-col a:hover{color:#5fd8c8;transform:translateX(3px);}
.risk-note{
  margin-top:clamp(26px,3vw,38px);
  padding:16px 20px;border-radius:var(--radius-sm);
  background:rgba(217,84,74,.1);border:1px solid rgba(217,84,74,.32);
  color:#e2b3ae;font-size:13.2px;line-height:1.9;
}
.footer-bottom{
  margin-top:24px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:#7c93a8;
}

@media (max-width:1024px){
  .risk-grid,.post-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .hero-flex{grid-template-columns:minmax(0,1fr);}
  .check-panel{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .nav-panel{
    display:none;
    position:absolute;left:18px;right:18px;top:calc(100% + 6px);
    flex-direction:column;align-items:stretch;gap:6px;
    background:#fff;border:1px solid var(--line);
    border-radius:14px;padding:10px;box-shadow:var(--shadow);margin-left:0;
  }
  .nav-panel.is-open{display:flex;}
  .nav-chip{justify-content:flex-start;padding:11px 14px;}
  .download-panel{grid-template-columns:minmax(0,1fr);}
}
@media (max-width:768px){
  .metric-strip{grid-template-columns:minmax(0,1fr);}
  .compare-grid{grid-template-columns:minmax(0,1fr);}
  .risk-grid,.post-grid,.scene-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .cta-band{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .site-container{padding:0 16px;}
  .nav-shell{padding:10px 16px;min-height:70px;}
  .brand-text span{display:none;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .dl-buttons{grid-template-columns:minmax(0,1fr);}
  .faq-item summary{font-size:14.4px;padding:15px 16px;}
  .faq-body{padding:0 16px 16px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}