/* roulang page: index */
:root{
  --primary:#1F5A43;
  --primary-deep:#143A2B;
  --beige:#F4F1E8;
  --surface:#FBF9F4;
  --accent:#E8943A;
  --accent-deep:#D87E1F;
  --lime:#D9EF6D;
  --ink:#1E2B25;
  --muted:#64746C;
  --border:#DCD8CD;
  --white:#FFFFFF;
  --radius:14px;
  --radius-sm:10px;
  --shadow-sm:0 8px 24px rgba(20,58,43,0.06);
  --shadow-md:0 16px 32px rgba(20,58,43,0.12);
  --shadow-lg:0 24px 48px rgba(20,58,43,0.18);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  --font-num:"Archivo","Barlow Condensed","Arial Narrow",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font-cn);
  background:var(--beige);
  color:var(--ink);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul[class]{list-style:none;}
button{font-family:inherit;border:none;background:none;cursor:pointer;color:inherit;}
input,textarea,select{font:inherit;}
.container{width:min(1200px,100% - 48px);margin-inline:auto;}
.section{padding-block:clamp(4rem,8vw,7rem);}
.section-head{max-width:720px;margin-bottom:48px;}
.section-head.center{margin-inline:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(31,90,67,0.09);
  color:var(--primary);
  font-size:13px;font-weight:600;
  padding:6px 14px;border-radius:999px;
  letter-spacing:0.02em;
  margin-bottom:14px;
}
h1,h2,h3,h4,h5,h6{line-height:1.25;font-weight:700;color:var(--ink);}
h2.section-title{font-size:clamp(1.9rem,3.6vw,3rem);letter-spacing:-0.01em;}
.section-desc{color:var(--muted);font-size:1rem;max-width:680px;margin-top:10px;}
.main-heading{font-size:clamp(2.6rem,6vw,4.8rem);line-height:1.15;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:46px;padding:0.8em 1.9em;
  border-radius:999px;font-weight:600;font-size:15px;
  transition:all 0.25s ease;
  border:1px solid transparent;
}
.btn i,.btn svg{margin-left:6px;transition:transform 0.2s ease;}
.btn:hover svg{transform:translateX(4px);}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-deep);transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-accent{background:var(--accent);color:var(--ink);}
.btn-accent:hover{background:var(--accent-deep);transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-outline{background:transparent;color:var(--primary-deep);border-color:var(--primary);}
.btn-outline:hover{border-color:var(--accent);color:var(--accent-deep);transform:translateY(-2px);}
.btn-small{min-height:40px;padding:0.5em 1.3em;font-size:14px;}
.icon{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none;}
.icon-sm{width:16px;height:16px;stroke-width:2;}
.icon-lg{width:26px;height:26px;}
a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
  border-radius:6px;
}
/* ============================ Header / Nav ============================ */
.site-header{z-index:100;position:relative;}
.topbar{background:var(--primary-deep);color:rgba(255,255,255,0.85);}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;min-height:36px;font-size:13px;}
.topbar-domain{font-family:var(--font-num);letter-spacing:0.02em;font-weight:500;}
.topbar-entry{display:inline-flex;align-items:center;gap:6px;color:#fff;font-weight:500;}
.topbar-entry:hover{color:var(--lime);}
.main-nav{
  position:sticky;
  top:0;
  background:rgba(251,249,244,0.92);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(220,216,205,0.7);
  z-index:50;
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;min-height:72px;gap:20px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:42px;height:42px;border-radius:12px;
  background:var(--primary);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:22px;font-weight:800;font-family:var(--font-num);
  box-shadow:0 6px 14px rgba(20,58,43,0.18);
}
.brand-name{font-size:20px;font-weight:800;color:var(--primary-deep);white-space:nowrap;letter-spacing:-0.01em;}
.nav-menu{display:flex;align-items:center;gap:8px;}
.nav-link{
  display:inline-flex;align-items:center;position:relative;
  padding:9px 14px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--ink);
  transition:color 0.2s ease,background 0.2s ease;
}
.nav-link.active,.nav-link:hover{color:var(--primary);background:rgba(31,90,67,0.08);}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;
  height:2px;background:var(--accent);border-radius:2px;
}
.nav-cta{margin-left:8px;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--border);align-items:center;justify-content:center;flex-direction:column;gap:5px;background:var(--surface);}
.nav-toggle .menu-line{display:block;width:20px;height:2px;background:var(--primary);border-radius:2px;transition:transform 0.3s ease,opacity 0.3s ease;}
.nav-toggle[aria-expanded="true"] .menu-line:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .menu-line:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .menu-line:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
/* ============================ Hero ============================ */
.hero{
  position:relative;
  padding:clamp(4rem,8vw,6.5rem) 0;
  background:linear-gradient(120deg,var(--beige) 0%,var(--surface) 62%),url('/assets/images/backpic/back-1.png') center/cover;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 88% 20%,rgba(232,148,58,0.14),transparent 32%);
}
.hero-grid{display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:center;position:relative;z-index:2;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(232,148,58,0.14);color:#9a5210;
  padding:7px 14px;border-radius:999px;margin-bottom:16px;
  font-size:14px;font-weight:500;
}
.hero h1{margin-bottom:20px;letter-spacing:-0.02em;}
.hero-desc{max-width:520px;font-size:18px;color:var(--muted);margin-bottom:30px;line-height:1.85;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px;}
.hero-note{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);flex-wrap:wrap;}
.hero-note .dot{width:6px;height:6px;background:var(--lime);border-radius:50%;box-shadow:0 0 0 4px rgba(217,239,109,0.35);}
.hero-note .dot.gray{background:var(--accent);box-shadow:0 0 0 4px rgba(232,148,58,0.2);}
.hero-visual{position:relative;}
.browser-window{
  background:var(--surface);
  border:1px solid var(--border);border-radius:18px;
  box-shadow:var(--shadow-lg);
  overflow:hidden;
}
.browser-bar{
  display:flex;align-items:center;gap:10px;
  padding:13px 16px;border-bottom:1px solid var(--border);
  background:#FDFCF8;
}
.browser-bar i{width:10px;height:10px;border-radius:50%;}
.browser-bar i:nth-child(1){background:#E8943A;}
.browser-bar i:nth-child(2){background:#D9EF6D;}
.browser-bar i:nth-child(3){background:var(--primary);}
.browser-url{
  margin-left:14px;flex:1;font-size:12px;color:var(--muted);
  font-family:var(--font-num);background:#F1EEE6;border-radius:6px;
  padding:3px 10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.browser-window img{width:100%;height:320px;object-fit:cover;}
.hero-float-card{
  position:absolute;left:-26px;bottom:-18px;
  background:var(--primary);color:#fff;border-radius:14px;
  padding:14px 22px;box-shadow:var(--shadow-lg);
  display:flex;align-items:center;gap:10px;
  font-size:14px;line-height:1.4;
}
.hero-float-card .float-icon{width:38px;height:38px;border-radius:10px;background:rgba(255,255,255,0.16);display:flex;align-items:center;justify-content:center;color:var(--lime);}
/* ============================ Feature ============================ */
.feature{background:var(--surface);}
.feature-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.feature-main{
  grid-column:span 7;background:var(--primary);color:#fff;
  padding:48px;border-radius:var(--radius);
  min-height:380px;display:flex;flex-direction:column;justify-content:space-between;
  position:relative;overflow:hidden;
}
.feature-main::after{
  content:"";position:absolute;right:-60px;top:-60px;width:180px;height:180px;
  border:28px solid rgba(217,239,109,0.15);border-radius:50%;
}
.feature-main .feature-icon{width:54px;height:54px;border-radius:14px;background:rgba(255,255,255,0.16);display:flex;align-items:center;justify-content:center;color:var(--lime);margin-bottom:24px;}
.feature-main h3{color:#fff;font-size:clamp(1.6rem,2.4vw,2.1rem);position:relative;z-index:2;}
.feature-main p{color:rgba(255,255,255,0.82);margin-top:12px;max-width:420px;font-size:15px;position:relative;z-index:2;}
.feature-main .feature-index{position:absolute;right:28px;bottom:20px;font-family:var(--font-num);font-size:64px;font-weight:700;color:rgba(255,255,255,0.12);z-index:1;}
.feature-sidestack{grid-column:span 5;display:flex;flex-direction:column;gap:24px;}
.feature-small{
  flex:1;display:flex;align-items:flex-start;gap:18px;
  background:var(--beige);border:1px solid var(--border);border-radius:var(--radius);
  padding:28px;
  transition:transform 0.25s ease,box-shadow 0.25s ease;
}
.feature-small:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.feature-small .feature-sicon{
  width:48px;height:48px;border-radius:12px;flex-shrink:0;
  background:rgba(232,148,58,0.18);color:#9A5210;
  display:flex;align-items:center;justify-content:center;
}
.feature-small h4{font-size:1.15rem;margin-bottom:6px;}
.feature-small p{color:var(--muted);font-size:14px;line-height:1.7;}
/* ============================ Latest News ============================ */
.latest{background:var(--beige);}
.news-panel{
  background:var(--surface);border:1px solid var(--border);
  border-radius:20px;padding:12px 24px;box-shadow:var(--shadow-sm);
}
.news-row{
  display:grid;grid-template-columns:120px 1fr auto 36px;
  column-gap:20px;align-items:center;
  padding:22px 8px;border-bottom:1px solid #ECE7DE;
  transition:background-color 0.2s ease;
}
.news-row:last-child{border-bottom:none;}
.news-row:hover{background:#F8F5EE;}
.news-tag{
  display:inline-block;width:max-content;
  background:rgba(31,90,67,0.1);color:var(--primary);
  font-size:13px;font-weight:500;padding:4px 12px;border-radius:999px;
}
.news-main strong{font-size:16px;color:var(--ink);display:block;transition:color 0.2s;}
.news-main small{color:var(--muted);font-size:14px;display:block;margin-top:3px;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;}
.news-row:hover .news-main strong{color:var(--primary);}
.news-date{color:var(--muted);font-size:14px;white-space:nowrap;font-family:var(--font-num);}
.news-arrow{
  width:32px;height:32px;border-radius:8px;
  background:var(--beige);display:flex;align-items:center;justify-content:center;
  color:var(--primary);transition:background 0.2s,transform 0.2s;
}
.news-row:hover .news-arrow{background:var(--primary);color:#fff;transform:translateX(4px);}
.news-empty{
  text-align:center;padding:52px 20px;color:var(--muted);background:var(--surface);
}
.news-empty-icon{
  width:64px;height:64px;margin:0 auto 16px;border-radius:18px;
  background:rgba(31,90,67,0.08);display:flex;align-items:center;justify-content:center;
  color:var(--primary);
}
.news-footer{display:flex;justify-content:center;margin-top:28px;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);
  font-weight:600;font-size:15px;
}
.link-more:hover{color:var(--accent-deep);}
/* ============================ Showcase ============================ */
.showcase{background:var(--surface);}
.showcase-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;}
.showcase-text h2{font-size:clamp(2rem,3.4vw,2.8rem);letter-spacing:-0.02em;margin-bottom:18px;}
.showcase-text>p{color:var(--muted);margin-bottom:26px;font-size:16px;}
.show-list{display:flex;flex-direction:column;gap:14px;}
.show-list li{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--beige);border:1px solid var(--border);
  padding:16px 20px;border-radius:12px;
  transition:transform 0.2s ease,box-shadow 0.2s ease;
}
.show-list li:hover{transform:translateX(5px);box-shadow:var(--shadow-sm);}
.show-list .show-icon{width:38px;height:38px;border-radius:10px;background:rgba(31,90,67,0.12);display:flex;align-items:center;justify-content:center;color:var(--primary);flex-shrink:0;}
.show-list strong{font-size:15px;display:block;}
.show-list span{font-size:14px;color:var(--muted);}
.showcase-media{position:relative;}
.showcase-media .browser-window img{height:380px;object-fit:cover;}
.showcase-media::after{
  content:"";position:absolute;right:-20px;bottom:-24px;
  width:140px;height:160px;border-radius:20px;
  background:var(--accent);opacity:0.16;z-index:-1;
}
/* ============================ Evidence ============================ */
.evidence{
  background:var(--primary-deep);
  color:#fff;
  padding-block:clamp(3.6rem,6vw,5.6rem);
  position:relative;overflow:hidden;
}
.evidence::before{
  content:"";position:absolute;right:-80px;top:-110px;width:300px;height:300px;
  border:44px solid rgba(232,148,58,0.1);border-radius:50%;
}
.evidence-stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:32px;position:relative;z-index:2;
}
.stat-item{border-left:1px solid rgba(255,255,255,0.16);padding-left:28px;}
.stat-item:first-child{border-left:none;padding-left:0;}
.stat-index{
  font-family:var(--font-num);font-size:48px;font-weight:700;line-height:1;
  color:var(--lime);margin-bottom:8px;
}
.stat-item strong{display:block;color:#fff;font-size:18px;margin-bottom:6px;}
.stat-item span{color:rgba(255,255,255,0.68);font-size:14px;}
.evidence-quote{
  margin-top:46px;padding:24px 30px;background:rgba(255,255,255,0.08);
  border-radius:16px;position:relative;z-index:2;
  font-size:15px;line-height:1.8;color:rgba(255,255,255,0.88);
  border-left:4px solid var(--accent);max-width:780px;
}
/* ============================ Scheme ============================ */
.scheme{background:var(--beige);}
.scheme-grid{display:grid;grid-template-columns:5fr 7fr;align-items:stretch;gap:24px;}
.scheme-card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:20px;padding:42px;display:flex;flex-direction:column;
  transition:transform 0.25s ease,box-shadow 0.25s ease;
}
.scheme-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);}
.scheme-card .scheme-name{font-size:14px;font-weight:600;color:var(--muted);letter-spacing:0.06em;text-transform:uppercase;}
.scheme-card .scheme-title{font-size:1.8rem;margin:10px 0 6px;letter-spacing:-0.02em;}
.scheme-card .scheme-desc{color:var(--muted);font-size:15px;margin-bottom:22px;}
.scheme-feature-list{display:grid;gap:12px;margin-bottom:28px;flex:1;}
.scheme-feature-list li{display:flex;align-items:center;gap:10px;font-size:15px;}
.scheme-feature-list .check{
  width:22px;height:22px;border-radius:50%;background:rgba(31,90,67,0.14);
  color:var(--primary);display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
}
.scheme-recommended{
  background:var(--primary);color:#fff;border-color:var(--primary);
  position:relative;overflow:hidden;
}
.scheme-recommended::before{
  content:"";position:absolute;right:-54px;top:-54px;width:180px;height:180px;
  background:rgba(217,239,109,0.1);border-radius:50%;
}
.scheme-recommended .recommend-mark{
  position:absolute;right:22px;top:20px;
  background:var(--accent);color:var(--ink);
  font-size:12px;font-weight:700;padding:4px 12px;border-radius:999px;
}
.scheme-recommended .scheme-name,.scheme-recommended .scheme-desc{color:rgba(255,255,255,0.8);}
.scheme-recommended .scheme-title{color:#fff;}
.scheme-feature-list .check{
  background:rgba(255,255,255,0.18);color:var(--lime);
}
.scheme-recommended .btn-primary{
  background:var(--accent);color:var(--ink);
}
.scheme-recommended .btn-primary:hover{background:#F5A24A;transform:translateY(-2px);box-shadow:0 12px 24px rgba(232,148,58,0.35);}
.scheme-foot{
  margin-top:28px;background:var(--surface);border:1px dashed var(--border);
  padding:18px 24px;border-radius:14px;display:flex;flex-wrap:wrap;
  justify-content:space-between;align-items:center;gap:12px;font-size:15px;color:var(--muted);
}
.scheme-foot a{color:var(--primary);font-weight:600;}
.scheme-foot a:hover{color:var(--accent-deep);}
/* ============================ FAQ ============================ */
.faq{background:var(--surface);}
.faq-wrap{max-width:820px;margin-inline:auto;}
.faq-item{border-bottom:1px solid var(--border);}
.faq-item:first-child{border-top:1px solid var(--border);}
.faq-question{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:22px 8px;min-height:44px;text-align:left;font-size:17px;font-weight:600;color:var(--ink);
  transition:color 0.2s;
}
.faq-question:hover{color:var(--primary);}
.faq-icon{
  width:26px;height:26px;position:relative;flex-shrink:0;
  border-radius:50%;border:1px solid var(--border);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary);
  border-radius:2px;transition:all 0.25s ease;
}
.faq-icon::before{width:12px;height:2px;transform:translate(-50%,-50%);}
.faq-icon::after{width:2px;height:12px;transform:translate(-50%,-50%);}
.faq-question[aria-expanded="true"] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-question[aria-expanded="true"] .faq-icon{border-color:var(--primary);background:rgba(31,90,67,0.08);}
.faq-answer{display:none;padding:0 28px 24px;color:var(--muted);max-width:720px;line-height:1.85;}
.faq-answer.show{display:block;animation:faqFade 0.25s ease;}
@keyframes faqFade{from{opacity:0;transform:translateY(-6px);}to{opacity:1;transform:translateY(0);}}
/* ============================ CTA area ============================ */
.cta-area{
  padding-block:clamp(3.8rem,8vw,6rem);
  background:linear-gradient(135deg,rgba(20,58,43,0.94),rgba(31,90,67,0.9)),url('/assets/images/backpic/back-3.png') center/cover;
  color:#fff;text-align:center;position:relative;overflow:hidden;
}
.cta-area::before{
  content:"";position:absolute;left:6%;top:-60px;width:120px;height:120px;
  background:rgba(232,148,58,0.18);border-radius:50%;
}
.cta-area h2{color:#fff;font-size:clamp(2rem,4vw,3.2rem);margin-bottom:12px;}
.cta-area p{color:rgba(255,255,255,0.82);max-width:520px;margin-inline:auto;margin-bottom:30px;font-size:16px;}
.cta-area .btn-accent{min-width:160px;}
/* ============================ Footer ============================ */
.site-footer{background:var(--primary-deep);color:rgba(255,255,255,0.72);}
.footer-main{
  display:grid;grid-template-columns:5fr 3fr 4fr;gap:50px;
  padding-block:64px 42px;
}
.footer-brand .brand-name{color:#fff;}
.footer-brand p{font-size:14px;margin-top:16px;max-width:320px;line-height:1.85;color:rgba(255,255,255,0.66);}
.footer-col h4{color:#fff;font-size:15px;letter-spacing:0.04em;margin-bottom:20px;font-weight:600;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,0.72);display:inline-flex;align-items:center;gap:6px;transition:color 0.2s,transform 0.2s;}
.footer-col a:hover{color:var(--lime);transform:translateX(3px);}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;}
.footer-contact .contact-icon{color:var(--accent);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.12);
  padding:22px 0;font-size:13px;text-align:center;
  color:rgba(255,255,255,0.55);
}
.footer-bottom span{margin:0 8px;}
.footer-bottom a{color:rgba(255,255,255,0.7);}
.footer-bottom a:hover{color:#fff;}
/* ============================ Float CTA ============================ */
.float-cta{
  position:fixed;right:22px;bottom:24px;z-index:90;
  opacity:0;transform:translateY(18px);pointer-events:none;
  transition:opacity 0.3s ease,transform 0.3s ease;
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta-btn{
  display:flex;align-items:center;gap:8px;
  background:var(--primary);color:#fff;
  padding:0 22px;height:52px;border-radius:999px;
  box-shadow:var(--shadow-lg);font-size:15px;font-weight:600;
  transition:background 0.2s,transform 0.2s;
}
.float-cta-btn:hover{background:var(--primary-deep);transform:translateY(-3px);}
/* ============================ Responsive ============================ */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:5fr 7fr;gap:38px;}
  .hero h1{font-size:clamp(2.1rem,4.5vw,3.2rem);}
  .hero-visual .browser-window img{height:270px;}
  .feature-main{padding:38px;}
  .scheme-grid{grid-template-columns:1fr;}
  .evidence-stats{grid-template-columns:1fr 1fr;gap:32px;}
  .stat-item:nth-child(odd){border-left:none;padding-left:0;}
  .footer-main{grid-template-columns:1fr 1fr;}
  .footer-brand p{max-width:100%;}
}
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero{padding-top:3.6rem;}
  .hero-visual{max-width:640px;margin-inline:auto;width:100%;}
  .showcase-grid{grid-template-columns:1fr;gap:42px;}
  .feature-grid{grid-template-columns:1fr;}
  .feature-main{grid-column:span 1;min-height:auto;}
  .feature-sidestack{grid-column:span 1;}
  .nav-menu{
    display:none;
    position:absolute;top:100%;left:0;right:0;
    background:var(--surface);border-bottom:1px solid var(--border);
    padding:12px 24px 24px;flex-direction:column;align-items:stretch;gap:4px;
  }
  .nav-menu.open{display:flex;}
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .nav-link.active::after{left:6px;right:auto;width:30px;bottom:6px;}
}
@media (max-width:640px){
  .container{width:min(100% - 32px,1200px);}
  .topbar-inner{font-size:12px;}
  .news-row{grid-template-columns:1fr auto;row-gap:10px;column-gap:12px;}
  .news-tag{grid-column:1;-ms-grid-column-align:start;}
  .news-main{grid-column:1 / -1;}
  .news-date{grid-column:1;}
  .news-arrow{grid-column:2;grid-row:1 / span 2;}
  .evidence-stats{grid-template-columns:1fr 1fr;}
  .stat-item:nth-child(even){border-left:1px solid rgba(255,255,255,0.16);padding-left:20px;}
  .stat-item:nth-child(3){border-left:none;padding-left:0;}
  .stat-index{font-size:38px;}
  .scheme-card{padding:28px;}
  .feature-main{padding:28px;}
  .footer-main{grid-template-columns:1fr;gap:36px;}
  .hero-desc{font-size:16px;}
  .hero-float-card{left:8px;bottom:-16px;padding:10px 16px;font-size:13px;}
  .cta-area .btn-accent{width:100%;}
  .float-cta{right:16px;bottom:16px;}
  .faq-question{font-size:15px;padding:18px 4px;}
}
@media (max-width:480px){
  .evidence-stats{grid-template-columns:1fr;gap:24px;}
  .stat-item,.stat-item:nth-child(odd),.stat-item:nth-child(even){
    border-left:1px solid rgba(255,255,255,0.16);padding-left:20px;
  }
  .brand-name{font-size:17px;}
  .brand-mark{width:36px;height:36px;font-size:18px;}
  .browser-window img{height:230px;}
  .section-head{margin-bottom:30px;}
}
.skip-link{
  position:absolute;left:-999px;top:-999px;z-index:200;
  background:var(--primary);color:#fff;padding:10px 18px;border-radius:8px;
}
.skip-link:focus{left:12px;top:12px;}

/* roulang page: article */
:root {
  --brand: #1F5A43;
  --brand-dark: #143A2B;
  --brand-soft: #E7EEE8;
  --paper: #F4F1E8;
  --surface: #FBF9F4;
  --accent: #E8943A;
  --accent-dark: #D87E1F;
  --lime: #D9EF6D;
  --text: #1E2B25;
  --muted: #64746C;
  --line: #DCD8CD;
  --light-line: #E8E3D8;
  --radius-lg: 18px;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 8px 24px rgba(20, 58, 43, 0.06);
  --shadow-md: 0 16px 32px rgba(20, 58, 43, 0.12);
  --container: 1280px;
  --topbar-h: 36px;
  --section-space: clamp(56px, 9vw, 88px);
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 110px;
}
body {
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  background: var(--paper);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}
img {
  max-width: 100%;
  display: block;
}
ul, ol {
  list-style: none;
}
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}
.icon,
.icon-sm {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.icon {
  width: 22px;
  height: 22px;
}
.icon-sm {
  width: 16px;
  height: 16px;
}
h1, h2, h3, h4 {
  line-height: 1.35;
  font-weight: 800;
  color: var(--text);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0.65em 1.85em;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn:active {
  transform: translateY(0);
}
.btn-primary {
  background: var(--brand);
  color: #fff;
}
.btn-primary:hover {
  background: var(--brand-dark);
}
.btn-accent {
  background: var(--accent);
  color: #1E2B25;
}
.btn-accent:hover {
  background: var(--accent-dark);
  color: #fff;
}
.btn-outline {
  background: transparent;
  border-color: var(--brand);
  color: var(--brand);
}
.btn-outline:hover {
  background: var(--brand-soft);
}
.btn-small {
  min-height: 38px;
  padding: 0.35em 1.25em;
  border-radius: 8px;
  font-size: 0.92rem;
}

.site-header {
  position: sticky;
  top: calc(var(--topbar-h) * -1);
  z-index: 120;
}
.topbar {
  background: var(--brand-dark);
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.86rem;
}
.topbar-inner {
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.topbar-domain {
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.62);
}
.topbar-entry {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: #fff;
  font-weight: 600;
  transition: color 0.2s;
}
.topbar-entry:hover {
  color: var(--lime);
}
.topbar-entry .icon-sm {
  transition: transform 0.2s;
}
.topbar-entry:hover .icon-sm {
  transform: translateX(3px);
}
.main-nav {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  transition: background 0.2s ease, box-shadow 0.2s ease;
}
.site-header.is-scrolled .main-nav {
  background: rgba(251, 249, 244, 0.94);
  box-shadow: 0 8px 24px rgba(20, 58, 43, 0.09);
  backdrop-filter: blur(12px);
}
.nav-inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 72px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
  color: var(--brand-dark);
  font-weight: 800;
  line-height: 1.15;
}
.brand-mark {
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--brand);
  color: #fff;
  border-radius: 11px;
  font-size: 1.2rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  transition: background 0.2s, transform 0.2s;
}
.brand:hover .brand-mark {
  background: var(--accent-dark);
  transform: rotate(-6deg);
}
.brand-name {
  font-size: 1.3rem;
  letter-spacing: 0.02em;
  font-weight: 900;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.nav-link {
  position: relative;
  display: inline-block;
  padding: 10px 12px;
  font-weight: 500;
  color: var(--text);
  border-radius: 8px;
  transition: color 0.2s, background 0.2s;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 4px;
  height: 2px;
  border-radius: 99px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.25s ease;
}
.nav-link:hover {
  color: var(--brand);
}
.nav-link.active {
  color: var(--brand);
  font-weight: 700;
}
.nav-link.active::after {
  transform: scaleX(1);
}
.nav-cta {
  flex: 0 0 auto;
}
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  margin-left: auto;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: 10px;
}
.menu-line {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 99px;
  transition: transform 0.25s ease, background 0.25s ease, opacity 0.2s;
}
.nav-toggle:hover .menu-line {
  background: var(--brand);
}
.nav-toggle[aria-expanded="true"] .menu-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .menu-line:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .menu-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.page-main {
  padding-bottom: 72px;
}
.article-page {
  padding: 44px 0 10px;
}
.article-shell {
  max-width: 800px;
  margin-inline: auto;
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 18px;
}
.breadcrumb a {
  color: var(--muted);
  transition: color 0.2s;
}
.breadcrumb a:hover {
  color: var(--accent);
}
.breadcrumb-sep {
  color: #A4AEAA;
  display: inline-block;
  padding-inline: 2px;
}
.breadcrumb-current {
  color: var(--text);
  font-weight: 600;
}

.article-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(26px, 5vw, 52px);
  box-shadow: var(--shadow-sm);
}
.article-cat {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 13px;
  background: rgba(31, 90, 67, 0.13);
  color: var(--brand);
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 700;
}
.article-title {
  font-size: clamp(1.65rem, 4vw, 2.5rem);
  line-height: 1.35;
  margin-top: 16px;
  letter-spacing: 0.01em;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--light-line);
  color: var(--muted);
  font-size: 0.88rem;
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.meta-item .icon-sm {
  color: var(--brand);
  opacity: 0.8;
}
.meta-divider {
  width: 1px;
  height: 15px;
  background: var(--line);
}
.article-source {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--brand);
  font-weight: 600;
}
.article-cover {
  margin-top: 22px;
  overflow: hidden;
  border-radius: 14px;
}
.article-cover img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 8;
  object-fit: cover;
}
.article-content {
  margin-top: 26px;
  font-size: 1.0625rem;
  line-height: 1.9;
  color: var(--text);
  overflow-wrap: break-word;
}
.article-content p {
  margin-bottom: 1.4em;
}
.article-content h2 {
  font-size: 1.52rem;
  margin: 1.9em 0 0.7em;
  padding-bottom: 0.25em;
  border-bottom: 1px solid var(--light-line);
}
.article-content h3 {
  font-size: 1.22rem;
  margin: 1.7em 0 0.6em;
}
.article-content ul,
.article-content ol {
  padding-left: 1.5em;
  margin-bottom: 1.4em;
}
.article-content ul li {
  list-style: disc;
  margin-bottom: 0.42em;
}
.article-content ol li {
  list-style: decimal;
  margin-bottom: 0.42em;
}
.article-content a {
  color: var(--brand);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(31, 90, 67, 0.38);
  transition: color 0.2s, text-decoration-color 0.2s;
}
.article-content a:hover {
  color: var(--accent-dark);
  text-decoration-color: var(--accent);
}
.article-content blockquote {
  margin: 1.8em 0;
  padding: 16px 20px;
  border-left: 4px solid var(--accent);
  background: #F2F4E9;
  border-radius: 0 12px 12px 0;
  color: var(--muted);
}
.article-content img {
  width: 100%;
  border-radius: 12px;
  margin: 1.4em 0;
}
.article-content strong {
  color: var(--brand-dark);
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.4em;
}
.article-content th,
.article-content td {
  border: 1px solid var(--line);
  padding: 8px 12px;
  text-align: left;
}
.article-content th {
  background: var(--paper);
}

.article-tail {
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid var(--light-line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}
.tail-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.92rem;
}
.tail-brand .dot {
  width: 7px;
  height: 7px;
  border-radius: 99px;
  background: var(--brand);
}
.tail-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--brand);
  font-weight: 700;
  font-size: 0.92rem;
  transition: color 0.2s, gap 0.2s;
}
.tail-link:hover {
  color: var(--accent-dark);
  gap: 10px;
}

.related-section {
  max-width: 800px;
  margin: 64px auto 0;
}
.related-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}
.related-heading h2 {
  font-size: 1.5rem;
}
.related-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--brand);
  font-weight: 700;
  font-size: 0.92rem;
  transition: color 0.2s;
}
.related-more:hover {
  color: var(--accent-dark);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.related-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px 20px 18px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  display: block;
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(31, 90, 67, 0.45);
}
.related-tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(31, 90, 67, 0.12);
  color: var(--brand);
  font-size: 0.78rem;
  font-weight: 700;
  margin-bottom: 13px;
}
.related-card h3 {
  font-size: 1.08rem;
  margin-bottom: 6px;
}
.related-card p {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
}
.related-go {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-top: 10px;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--brand);
  transition: gap 0.2s, color 0.2s;
}
.related-card:hover .related-go {
  color: var(--accent-dark);
  gap: 9px;
}

.missing-wrap {
  max-width: 760px;
  min-height: 52vh;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(24px, 4vw, 54px);
}
.missing-card {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 44px 28px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.missing-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  margin-bottom: 16px;
  background: rgba(31, 90, 67, 0.12);
  color: var(--brand);
  border-radius: 50%;
}
.missing-card h1 {
  font-size: 1.6rem;
  margin-bottom: 10px;
}
.missing-card p {
  color: var(--muted);
  margin-bottom: 24px;
}

.site-footer {
  background: var(--brand-dark);
  color: rgba(255, 255, 255, 0.76);
  padding: 56px 0 24px;
  margin-top: 72px;
}
.footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 44px;
  padding-bottom: 34px;
}
.site-footer .brand {
  color: #fff;
  margin-bottom: 14px;
}
.site-footer .brand-mark {
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
}
.site-footer .brand:hover .brand-mark {
  background: var(--accent);
}
.footer-brand p {
  max-width: 340px;
  font-size: 0.92rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
}
.footer-col h4 {
  color: #fff;
  font-size: 1.02rem;
  margin-bottom: 16px;
}
.footer-col ul li {
  margin-bottom: 10px;
  font-size: 0.92rem;
}
.footer-col a {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: rgba(255, 255, 255, 0.72);
  transition: color 0.2s, transform 0.2s;
}
.footer-col a:hover {
  color: var(--lime);
  transform: translateX(3px);
}
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  color: rgba(255, 255, 255, 0.66);
}
.contact-icon {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--lime);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  padding-top: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.48);
}

@media (max-width: 1024px) {
  .container {
    padding-inline: 22px;
  }
  .footer-main {
    grid-template-columns: 1.2fr 0.9fr 1.1fr;
    gap: 28px;
  }
  .related-grid {
    gap: 14px;
  }
}

@media (max-width: 980px) {
  .nav-toggle {
    display: inline-flex;
  }
  .nav-cta {
    display: none;
  }
  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    background: var(--surface);
    border-top: 1px solid var(--light-line);
    border-bottom: 1px solid var(--line);
    padding: 12px 16px 18px;
    margin-left: 0;
    box-shadow: 0 22px 30px rgba(20, 58, 43, 0.12);
    border-radius: 0 0 14px 14px;
  }
  .nav-menu.open {
    display: flex;
  }
  .nav-link {
    display: block;
    padding: 13px 10px;
    border-radius: 10px;
    font-size: 1rem;
  }
  .nav-link::after {
    display: none;
  }
  .nav-link:hover,
  .nav-link.active {
    background: var(--brand-soft);
    color: var(--brand);
  }
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .container {
    padding-inline: 18px;
  }
  .topbar-domain {
    font-size: 0.78rem;
  }
  .topbar-entry {
    font-size: 0.82rem;
  }
  .brand-name {
    font-size: 1.15rem;
  }
  .article-page {
    padding-top: 30px;
  }
  .article-title {
    font-size: 1.7rem;
  }
  .article-cover img {
    aspect-ratio: 16 / 9;
  }
  .article-source {
    margin-left: 0;
    width: 100%;
  }
  .article-tail {
    align-items: flex-start;
  }
  .footer-main {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 560px) {
  :root {
    --topbar-h: 34px;
  }
  .container {
    padding-inline: 16px;
  }
  .topbar-entry span {
    display: none;
  }
  .brand-mark {
    width: 34px;
    height: 34px;
    font-size: 1.05rem;
    border-radius: 10px;
  }
  .brand-name {
    font-size: 1.02rem;
  }
  .nav-inner {
    min-height: 64px;
    gap: 8px;
  }
  .nav-menu {
    padding-inline: 12px;
  }
  .article-card {
    padding: 22px 18px;
    border-radius: 14px;
  }
  .article-title {
    font-size: 1.45rem;
  }
  .article-content {
    font-size: 1rem;
    line-height: 1.8;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* roulang page: category1 */
:root {
  --green: #1F5A43;
  --green-dark: #143A2B;
  --paper: #F4F1E8;
  --cream: #FBF9F4;
  --orange: #E8943A;
  --orange-dark: #D87E1F;
  --lime: #D9EF6D;
  --text: #1E2B25;
  --muted: #64746C;
  --line: #E2DED2;
  --line-soft: #DCD8CD;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 8px 24px rgba(20, 58, 43, 0.06);
  --shadow-md: 0 16px 32px rgba(20, 58, 43, 0.12);
  --font-main: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans CJK SC", "sans-serif";
  --font-num: "Archivo", "Barlow Condensed", "Arial Narrow", "sans-serif";
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-main);
  background: var(--paper);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}
ul,
ol {
  list-style: none;
}
svg {
  width: 1.25rem;
  height: 1.25rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  vertical-align: middle;
}
.icon-sm {
  width: 1rem;
  height: 1rem;
}
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.section {
  padding-top: clamp(4rem, 8vw, 6.8rem);
  padding-bottom: clamp(4rem, 8vw, 6.8rem);
}
.section-light {
  background: var(--cream);
}
.section-head {
  max-width: 720px;
  margin-bottom: 52px;
}
.section-head.center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}
.eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  font-weight: 700;
  color: var(--orange-dark);
  background: rgba(232, 148, 58, 0.14);
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 18px;
}
.section h2,
.split-title {
  font-size: clamp(1.9rem, 3.6vw, 3rem);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 16px;
}
.section-lead {
  font-size: 1.0625rem;
  color: var(--muted);
  max-width: 640px;
  line-height: 1.8;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 1.8rem;
  border-radius: 10px;
  font-weight: 700;
  border: 1px solid transparent;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
  white-space: nowrap;
}
.btn:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}
.btn-primary {
  background: var(--green);
  color: #fff;
}
.btn-primary:hover {
  background: var(--green-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn-orange {
  background: var(--orange);
  color: #1E2B25;
}
.btn-orange:hover {
  background: var(--orange-dark);
  color: #fff;
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: var(--green);
  border-color: var(--green);
}
.btn-outline:hover {
  border-color: var(--orange);
  color: var(--orange-dark);
  background: rgba(232, 148, 58, 0.06);
}
.btn-outline-light {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(4px);
}
.btn-outline-light:hover {
  background: #fff;
  color: var(--green-dark);
  border-color: #fff;
  transform: translateY(-2px);
}
.btn-small {
  min-height: 42px;
  padding: 0 1.35rem;
  font-size: 0.92rem;
  border-radius: 8px;
}
.site-header {
  position: relative;
  z-index: 100;
}
.topbar {
  background: var(--green-dark);
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.875rem;
  line-height: 1;
}
.topbar-inner {
  min-height: 38px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.topbar-domain {
  letter-spacing: 0.04em;
  font-family: var(--font-num);
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.72);
}
.topbar-entry {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--lime);
  font-weight: 700;
  padding: 6px 2px;
}
.topbar-entry:hover {
  color: #fff;
}
.main-nav {
  position: sticky;
  top: 0;
  background: rgba(251, 249, 244, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(220, 216, 205, 0.8);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 76px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.28rem;
  color: var(--green);
  letter-spacing: -0.01em;
  flex-shrink: 0;
}
.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--green);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.18rem;
  font-weight: 800;
  box-shadow: 0 6px 14px rgba(31, 90, 67, 0.22);
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.8vw, 38px);
  margin-left: auto;
  margin-right: auto;
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text);
  padding: 0 2px;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 100%;
  height: 2px;
  background: var(--orange);
  border-radius: 2px;
  opacity: 0;
  transform: scaleX(0.4);
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.nav-link:hover,
.nav-link.active {
  color: var(--green);
}
.nav-link:hover::after,
.nav-link.active::after {
  opacity: 1;
  transform: scaleX(1);
}
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--cream);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.nav-toggle:hover {
  border-color: var(--green);
}
.nav-toggle .menu-line {
  width: 18px;
  height: 2px;
  background: var(--green);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.page-hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  color: #fff;
  overflow: hidden;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(20, 58, 43, 0.94) 0%, rgba(20, 58, 43, 0.82) 42%, rgba(20, 58, 43, 0.52) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding-top: clamp(4.5rem, 8vw, 8rem);
  padding-bottom: clamp(4rem, 7vw, 6.5rem);
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 22px;
}
.breadcrumb a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.85);
  transition: color 0.2s ease;
}
.breadcrumb a:hover {
  color: var(--lime);
}
.breadcrumb .sep {
  opacity: 0.5;
}
.hero-eyebrow {
  display: inline-block;
  background: rgba(217, 239, 109, 0.18);
  color: var(--lime);
  border-radius: 999px;
  padding: 6px 16px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  margin-bottom: 22px;
}
.page-hero h1 {
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 22px;
  text-wrap: balance;
}
.hero-lead {
  max-width: 640px;
  font-size: 1.125rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.86);
  margin-bottom: 32px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}
.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.service-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 28px 26px;
  min-height: 300px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(31, 90, 67, 0.35);
}
.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--green);
  background: rgba(31, 90, 67, 0.1);
  margin-bottom: 20px;
}
.service-card:nth-child(3n + 2) .card-icon {
  color: var(--orange-dark);
  background: rgba(232, 148, 58, 0.12);
}
.service-card h3 {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 10px;
  line-height: 1.35;
}
.service-card p {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 22px;
  flex: 1;
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  color: var(--green);
  font-size: 0.95rem;
}
.card-link svg {
  transition: transform 0.2s ease;
}
.service-card:hover .card-link svg {
  transform: translateX(5px);
}
.card-link:hover {
  color: var(--orange-dark);
}
.service-footnote {
  margin-top: 40px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  background: rgba(31, 90, 67, 0.1);
  color: var(--green);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 8px 16px;
}
.split-wrapper {
  display: flex;
  flex-direction: column;
  gap: clamp(4rem, 8vw, 6.5rem);
}
.split-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(30px, 6vw, 72px);
  align-items: center;
}
.split-copy p {
  color: var(--muted);
  margin-bottom: 20px;
  max-width: 560px;
}
.split-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 24px;
}
.split-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-weight: 500;
  color: var(--text);
}
.split-list .list-mark {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--green);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}
.split-list .list-mark svg {
  width: 14px;
  height: 14px;
  stroke-width: 3;
}
.split-visual {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background: var(--green-dark);
}
.split-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 320px;
}
.split-flip .split-visual {
  order: 2;
}
.number-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  counter-reset: step;
}
.step-card {
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px 30px 32px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.step-num {
  font-size: 2.2rem;
  font-weight: 800;
  font-family: var(--font-num);
  color: var(--orange);
  line-height: 1;
  margin-bottom: 18px;
  display: block;
}
.step-card h3 {
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 12px;
}
.step-card p {
  color: var(--muted);
  font-size: 0.97rem;
}
.dark-panel {
  background: var(--green-dark);
  color: rgba(255, 255, 255, 0.85);
}
.dark-panel .section h2,
.dark-panel h3 {
  color: #fff;
}
.faq-wrap {
  max-width: 880px;
  margin: 0 auto;
}
.faq-item {
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.faq-item[open] {
  border-color: rgba(31, 90, 67, 0.4);
  box-shadow: var(--shadow-md);
}
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  list-style: none;
  cursor: pointer;
  padding: 20px 24px;
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.5;
  min-height: 64px;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: "+";
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(31, 90, 67, 0.1);
  color: var(--green);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  font-weight: 400;
  line-height: 1;
  transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
  background: var(--orange);
  color: #fff;
}
.faq-answer {
  padding: 0 24px 24px;
  color: var(--muted);
  line-height: 1.8;
  font-size: 0.98rem;
  border-top: 1px solid var(--line-soft);
  margin: 0 24px;
  padding-left: 0;
  padding-right: 0;
  padding-top: 18px;
}
.cta-band {
  position: relative;
  background-size: cover;
  background-position: center;
  padding: clamp(4.5rem, 8vw, 7rem) 0;
  text-align: center;
  color: #fff;
}
.cta-overlay {
  position: absolute;
  inset: 0;
  background: rgba(20, 58, 43, 0.9);
}
.cta-inner {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin: 0 auto;
}
.cta-inner h2 {
  font-size: clamp(2rem, 4vw, 3.4rem);
  font-weight: 800;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.cta-inner p {
  color: rgba(255, 255, 255, 0.84);
  font-size: 1.1rem;
  margin-bottom: 32px;
}
.cta-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}
.site-footer {
  background: var(--green-dark);
  color: rgba(255, 255, 255, 0.72);
  padding-top: clamp(3.5rem, 7vw, 6rem);
}
.footer-main {
  display: grid;
  grid-template-columns: 2.2fr 1fr 1.8fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand p {
  max-width: 340px;
  margin-top: 16px;
  font-size: 0.95rem;
  line-height: 1.8;
}
.site-footer .brand {
  color: #fff;
}
.site-footer .brand-mark {
  background: var(--orange);
  color: #fff;
}
.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  letter-spacing: 0.06em;
  margin-bottom: 22px;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col a {
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.95rem;
}
.footer-col a:hover {
  color: var(--lime);
}
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.95rem;
}
.contact-icon {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--orange);
}
.contact-icon svg {
  width: 16px;
  height: 16px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 24px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: space-between;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.55);
}
.float-entry {
  position: fixed;
  right: 24px;
  bottom: 32px;
  z-index: 60;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--green);
  color: #fff;
  box-shadow: 0 10px 26px rgba(20, 58, 43, 0.3);
  font-size: 0.85rem;
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.float-entry span {
  display: none;
}
.float-entry:hover {
  background: var(--orange);
  color: #1E2B25;
  transform: translateY(-3px);
  box-shadow: 0 16px 32px rgba(20, 58, 43, 0.36);
}
.float-entry:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 4px;
}
@media (max-width: 1024px) {
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}
@media (max-width: 768px) {
  .container {
    padding-left: 18px;
    padding-right: 18px;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--cream);
    border-bottom: 1px solid var(--line-soft);
    box-shadow: var(--shadow-md);
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    padding: 0 18px;
    transition: max-height 0.3s ease, padding 0.3s ease, visibility 0.3s ease;
  }
  .nav-menu.open {
    max-height: calc(100vh - 80px);
    visibility: visible;
    padding-top: 8px;
    padding-bottom: 14px;
  }
  .nav-menu li {
    width: 100%;
  }
  .nav-link {
    justify-content: flex-start;
    min-height: 48px;
    border-bottom: 1px solid rgba(220, 216, 205, 0.6);
    width: 100%;
  }
  .nav-link::after {
    display: none;
  }
  .nav-cta {
    display: none;
  }
  .page-hero {
    min-height: auto;
  }
  .page-hero h1 {
    font-size: clamp(2.2rem, 8vw, 3.2rem);
  }
  .hero-actions {
    align-items: stretch;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .split-block {
    grid-template-columns: 1fr;
  }
  .split-flip .split-visual {
    order: 0;
  }
  .split-visual img {
    min-height: 0;
  }
  .number-steps {
    grid-template-columns: 1fr 1fr;
  }
  .step-card:last-child {
    grid-column: span 2;
  }
  .footer-main {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 8px;
  }
}
@media (max-width: 560px) {
  .topbar-domain {
    font-size: 0.75rem;
  }
  .topbar .icon {
    display: none;
  }
  .brand-name {
    font-size: 1.15rem;
  }
  .service-grid {
    grid-template-columns: 1fr;
  }
  .number-steps {
    grid-template-columns: 1fr;
  }
  .step-card:last-child {
    grid-column: span 1;
  }
  .footer-main {
    gap: 32px;
  }
}
@media (max-width: 360px) {
  .nav-inner {
    gap: 12px;
  }
  .brand-name {
    font-size: 1.05rem;
  }
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
}

/* roulang page: category2 */
:root {
  --primary: #1F5A43;
  --primary-dark: #143A2B;
  --cream: #F4F1E8;
  --surface: #FBF9F4;
  --accent: #E8943A;
  --accent-dark: #D87E1F;
  --lime: #D9EF6D;
  --ink: #1E2B25;
  --muted: #64746C;
  --border: #E2DED2;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 8px 24px rgba(20, 58, 43, 0.06);
  --shadow-md: 0 16px 32px rgba(20, 58, 43, 0.12);
  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --font-num: "Archivo", "Barlow Condensed", "Arial Narrow", sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease, border 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

a:hover {
  color: var(--accent);
}

img {
  max-width: 100%;
  display: block;
}

svg.icon {
  width: 1em;
  height: 1em;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: none;
}

button,
input,
summary {
  font: inherit;
}

h1,
h2,
h3,
h4 {
  line-height: 1.3;
  font-weight: 800;
  color: var(--ink);
}

a:focus-visible,
button:focus-visible,
summary:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 8px;
}

.container {
  width: min(1240px, 100%);
  margin-inline: auto;
  padding-inline: 24px;
}

.section {
  padding: clamp(4rem, 8vw, 6.5rem) 0;
}

.section-head {
  max-width: 780px;
  margin-bottom: 3rem;
}

.section-head.center {
  margin-inline: auto;
  text-align: center;
}

.section-overline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-overline::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--accent);
  border-radius: 999px;
  flex: none;
}

.section-head h2 {
  font-size: clamp(1.9rem, 3.6vw, 2.9rem);
  letter-spacing: -0.02em;
  margin-bottom: 0.7em;
}

.section-head p {
  font-size: 1.0625rem;
  color: var(--muted);
  line-height: 1.8;
  max-width: 720px;
}

.section-head.center p {
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: -36px;
  z-index: 1000;
  background: var(--surface);
}

.topbar {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.8125rem;
}

.topbar-inner {
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.topbar-domain {
  letter-spacing: 0.02em;
  opacity: 0.86;
}

.topbar-entry {
  color: #fff;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 0;
  font-weight: 600;
}

.topbar-entry:hover {
  color: var(--lime);
}

.main-nav {
  position: relative;
  background: rgba(251, 249, 244, 0.96);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(14px);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.site-header.scrolled .main-nav {
  box-shadow: 0 8px 24px rgba(20, 58, 43, 0.08);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 74px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
  color: var(--ink);
}

.brand:hover {
  color: var(--ink);
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.15rem;
  box-shadow: 0 6px 12px rgba(20, 58, 43, 0.18);
  flex: none;
}

.brand-name {
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.site-footer .brand-name {
  color: #fff;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  background: transparent;
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
  margin-left: auto;
  cursor: pointer;
}

.nav-toggle .menu-line {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  margin: 2.5px 0;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle.active .menu-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active .menu-line:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active .menu-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  margin-left: 2rem;
  padding: 0;
  gap: 4px;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  color: var(--ink);
  font-weight: 500;
  padding: 0.6rem 1rem;
  border-radius: 999px;
  min-height: 44px;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--primary);
  background: rgba(31, 90, 67, 0.05);
}

.nav-link.active {
  color: var(--primary);
  font-weight: 700;
}

.nav-link.active::after {
  content: "";
  position: absolute;
  left: 1rem;
  right: 1rem;
  bottom: 8px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
}

.nav-cta {
  margin-left: auto;
}

/* Buttons */
.btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0.75em 1.9em;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--primary);
  font-weight: 700;
  font-size: 1rem;
  white-space: nowrap;
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.btn svg {
  width: 1.15em;
  height: 1.15em;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(20, 58, 43, 0.11);
  color: currentColor;
}

.btn-small {
  padding: 0.5em 1.25em;
  font-size: 0.9375rem;
  min-height: 40px;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
}

.btn-accent {
  background: var(--accent);
  color: var(--primary-dark);
}

.btn-accent:hover {
  background: var(--accent-dark);
  color: var(--primary-dark);
}

.btn-outline {
  border-color: var(--primary);
  color: var(--primary);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(232, 148, 58, 0.06);
}

.btn-light {
  border-color: rgba(255, 255, 255, 0.56);
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}

.btn-light:hover {
  border-color: var(--lime);
  color: var(--lime);
  background: rgba(255, 255, 255, 0.12);
}

/* Hero */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 560px;
  padding: clamp(4rem, 8vw, 6.8rem) 0;
  color: var(--surface);
  background-image: linear-gradient(110deg, rgba(20, 58, 43, 0.96) 0%, rgba(31, 90, 67, 0.82) 52%, rgba(31, 90, 67, 0.45) 100%), url('/assets/images/backpic/back-1.png');
  background-position: center center;
  background-size: cover;
  background-color: var(--primary-dark);
}

.hero-content {
  max-width: 800px;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.875rem;
  font-weight: 700;
}

.hero h1 {
  font-size: clamp(2.5rem, 5.8vw, 4.4rem);
  color: #fff;
  margin: 1.2rem 0 0.8rem;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.hero-sub {
  max-width: 660px;
  font-size: 1.1rem;
  line-height: 1.85;
  color: rgba(251, 249, 244, 0.85);
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 0.8rem;
}

/* Help topic cards */
.topics-section {
  background: var(--cream);
}

.help-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

.help-card {
  grid-column: span 3;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 2rem 1.8rem;
  min-height: 280px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.help-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(31, 90, 67, 0.25);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(31, 90, 67, 0.08);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.4rem;
}

.card-icon svg {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.help-card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.6rem;
}

.help-card p {
  color: var(--muted);
  font-size: 0.97rem;
  flex: 1;
  margin-bottom: 1.2rem;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  color: var(--primary);
}

.card-link:hover {
  color: var(--accent);
}

.card-link svg {
  width: 16px;
  height: 16px;
  transition: transform 0.2s ease;
}

.card-link:hover svg {
  transform: translateX(4px);
}

/* split area */
.split-section {
  background: var(--surface);
  border-top: 1px solid rgba(226, 222, 210, 0.55);
  border-bottom: 1px solid rgba(226, 222, 210, 0.55);
}

.split {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: clamp(2rem, 5vw, 4.8rem);
  align-items: center;
}

.split h2 {
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  margin: 0.4em 0 0.7em;
  letter-spacing: -0.02em;
}

.split .lead {
  color: var(--muted);
  margin-bottom: 1.4rem;
}

.check-list {
  list-style: none;
  display: grid;
  gap: 14px;
  margin-top: 1.6rem;
}

.check-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--cream);
  padding: 16px 16px 14px;
  border-radius: var(--radius);
  border-left: 3px solid var(--primary);
}

.li-icon {
  width: 32px;
  height: 32px;
  flex: none;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
}

.li-icon svg {
  width: 16px;
  height: 16px;
}

.li-copy strong {
  display: block;
  color: var(--ink);
  font-size: 1.02rem;
  margin-bottom: 2px;
}

.li-copy p {
  color: var(--muted);
  font-size: 0.945rem;
  margin: 0;
  line-height: 1.75;
}

.split-media {
  position: relative;
}

.split-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 22px;
  box-shadow: var(--shadow-md);
  min-height: 300px;
  max-height: 480px;
}

.media-note {
  position: absolute;
  left: 18px;
  bottom: 18px;
  background: rgba(20, 58, 43, 0.92);
  color: #fff;
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 700;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.14);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  backdrop-filter: blur(8px);
}

.media-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--lime);
}

/* Process steps */
.process-section {
  background: var(--cream);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.step-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1.6rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.step-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 13px;
  background: var(--primary);
  color: var(--lime);
  font-family: var(--font-num);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 1.2rem;
}

.step-card h3 {
  font-size: 1.12rem;
  margin-bottom: 0.5em;
}

.step-card p {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.75;
  margin: 0;
}

/* dark note band */
.note-section {
  padding: 0 0 clamp(4rem, 8vw, 6.5rem);
  background: var(--cream);
}

.principle-panel {
  position: relative;
  overflow: hidden;
  border-radius: 26px;
  background-color: var(--primary-dark);
  background-image: linear-gradient(120deg, rgba(20, 58, 43, 0.97), rgba(31, 90, 67, 0.9)), url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  color: #fff;
  padding: clamp(1.8rem, 4vw, 3.2rem);
  box-shadow: var(--shadow-md);
}

.principle-panel .section-head h2 {
  color: #fff;
}

.principle-panel .section-head p {
  color: rgba(255, 255, 255, 0.78);
}

.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: -1rem;
}

.principle-item {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 18px;
  padding: 1.6rem 1.5rem;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.principle-item:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(217, 239, 109, 0.5);
  transform: translateY(-4px);
}

.principle-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: rgba(217, 239, 109, 0.14);
  color: var(--lime);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.1rem;
}

.principle-icon svg {
  width: 22px;
  height: 22px;
}

.principle-item h3 {
  color: #fff;
  font-size: 1.1rem;
  margin-bottom: 0.4em;
}

.principle-item p {
  color: rgba(255, 255, 255, 0.72);
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.75;
}

/* FAQ */
.faq-section {
  background: var(--surface);
  border-top: 1px solid rgba(226, 222, 210, 0.55);
}

.faq-list {
  max-width: 860px;
  margin-inline: auto;
}

.faq-item {
  background: var(--cream);
  border: 1px solid var(--border);
  border-radius: 16px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.faq-item[open] {
  border-color: rgba(31, 90, 67, 0.28);
  box-shadow: var(--shadow-sm);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 60px;
  padding: 16px 22px;
  cursor: pointer;
  list-style: none;
  background: transparent;
  transition: background 0.2s ease;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::marker {
  content: "";
  display: none;
}

.faq-item summary:hover {
  background: rgba(31, 90, 67, 0.03);
}

.faq-q {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--ink);
}

.faq-icon {
  position: relative;
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  border: 1px solid var(--primary);
  border-radius: 50%;
  color: var(--primary);
  transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: currentColor;
  transform: translate(-50%, -50%);
}

.faq-icon::before {
  width: 10px;
  height: 2px;
}

.faq-icon::after {
  width: 2px;
  height: 10px;
}

.faq-item[open] .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.faq-answer {
  padding: 0 24px 22px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.85;
}

.faq-answer p + p {
  margin-top: 0.8rem;
}

.faq-more {
  text-align: center;
  margin-top: 2.4rem;
  color: var(--muted);
}

.faq-more .btn {
  margin-top: 12px;
}

/* CTA */
.final-cta {
  background: var(--cream);
  padding: 0 0 clamp(4rem, 8vw, 6.5rem);
}

.cta-panel {
  position: relative;
  overflow: hidden;
  border-radius: 26px;
  background-image: linear-gradient(120deg, rgba(20, 58, 43, 0.98), rgba(31, 90, 67, 0.9)), url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  color: #fff;
  padding: clamp(2rem, 5vw, 3.8rem);
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  align-items: center;
}

.cta-copy h2 {
  color: #fff;
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  margin: 0.5em 0 0.7em;
}

.cta-copy p {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.8;
  margin-bottom: 0;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: flex-end;
}

.cta-actions .btn {
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
}

/* Footer */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.78);
  padding: clamp(3rem, 6vw, 4.6rem) 0 0;
}

.footer-main {
  display: grid;
  grid-template-columns: 1.35fr 0.7fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  padding-bottom: 2.8rem;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.96rem;
  max-width: 380px;
  margin-top: 1rem;
}

.footer-col h4 {
  color: #fff;
  font-size: 1.05rem;
  margin-bottom: 1.1rem;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 10px;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.74);
  font-size: 0.94rem;
}

.footer-col a:hover {
  color: var(--accent);
}

.footer-contact li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.66);
  line-height: 1.7;
}

.contact-icon {
  flex: none;
  width: 24px;
  height: 24px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--lime);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.contact-icon svg {
  width: 14px;
  height: 14px;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 18px 0 22px;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.55);
}

/* Floating button */
.fab {
  position: fixed;
  right: 22px;
  bottom: calc(22px + env(safe-area-inset-bottom));
  z-index: 900;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 12px 26px rgba(20, 58, 43, 0.24);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease, background 0.2s ease;
}

.fab:hover {
  background: var(--accent-dark);
  color: #fff;
}

.fab.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.fab svg {
  width: 20px;
  height: 20px;
}

/* Responsive */
@media (max-width: 1100px) {
  .help-card {
    grid-column: span 6;
    min-height: auto;
  }

  .principle-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 991px) {
  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    margin: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    border-top: 1px solid var(--border);
    padding: 14px;
    box-shadow: 0 18px 32px rgba(20, 58, 43, 0.14);
    border-radius: 0 0 18px 18px;
  }

  .nav-toggle.active + .nav-menu {
    display: flex;
  }

  .nav-link {
    width: 100%;
    padding: 0.9rem 1.1rem;
    white-space: normal;
    border-radius: 12px;
  }

  .nav-link.active::after {
    display: none;
  }

  .nav-link.active {
    background: rgba(31, 90, 67, 0.08);
  }

  .split {
    grid-template-columns: 1fr;
  }

  .split-media {
    max-width: 720px;
  }

  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .cta-panel {
    grid-template-columns: 1fr;
  }

  .cta-actions {
    justify-content: flex-start;
  }

  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 2.2rem;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .principle-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .container {
    padding-inline: 18px;
  }

  .hero {
    min-height: auto;
  }

  .help-grid {
    grid-template-columns: 1fr;
  }

  .help-card {
    grid-column: span 1;
  }

  .steps-grid {
    grid-template-columns: 1fr;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .btn {
    width: auto;
  }

  .footer-main {
    grid-template-columns: 1fr;
  }

  .footer-brand {
    grid-column: auto;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 4px;
  }

  .principle-item {
    padding: 1.25rem;
  }

  .faq-item summary {
    padding: 14px 16px;
  }

  .faq-q {
    font-size: 1rem;
  }

  .faq-answer {
    padding: 0 18px 20px;
  }

  .fab {
    right: 16px;
    bottom: calc(16px + env(safe-area-inset-bottom));
  }
}