/* roulang page: index */
:root{
  --brand-500:#12A085;
  --brand-700:#0E6B5A;
  --brand-900:#0B3B33;
  --accent-500:#F2A03D;
  --accent-600:#DE8C29;
  --accent-100:#FDF0DC;
  --ink-900:#14201E;
  --ink-600:#4A5A57;
  --ink-300:#8B9995;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E2E5E1;
  --dark:#0B3B33;
  --ok:#1B8A5A;
  --warn:#B4531F;
  --r-card:16px;
  --r-btn:12px;
  --r-img:12px;
  --shadow-1:0 1px 2px rgba(20,32,30,.06);
  --shadow-2:0 12px 28px rgba(20,32,30,.10);
  --shadow-dark:0 16px 32px rgba(0,0,0,.22);
  --mono:"Roboto Mono",SFMono-Regular,Consolas,"Liberation Mono",monospace;
  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--brand-700);text-decoration:none;text-underline-offset:3px;transition:color .25s ease,background-color .25s ease,border-color .25s ease;}
a:hover{color:var(--accent-600);}
h1,h2,h3,h4{color:var(--ink-900);margin:0 0 16px;font-weight:700;letter-spacing:.2px;}
h1{font-size:clamp(28px,4vw,42px);line-height:1.25;}
h2{font-size:clamp(24px,3vw,32px);line-height:1.3;}
h3{font-size:20px;line-height:1.45;font-weight:600;}
p{margin:0 0 16px;}
ul{margin:0 0 16px;padding-left:20px;}
li{margin-bottom:8px;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-700);
  background:rgba(18,160,133,.10);
  border-radius:999px;padding:5px 14px;margin-bottom:16px;letter-spacing:.5px;
}
.section-head p{font-size:16px;color:var(--ink-600);margin:0;}
.mono{font-family:var(--mono);font-size:14px;letter-spacing:.2px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;line-height:1;
  transition:transform .2s ease,box-shadow .25s ease,background-color .25s ease,color .25s ease,border-color .25s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent-500);color:var(--ink-900);box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--accent-600);color:var(--ink-900);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);background:#D1862A;}
.btn-ghost{background:transparent;color:var(--brand-700);border:1.5px solid var(--brand-500);}
.btn-ghost:hover{background:rgba(18,160,133,.08);color:var(--brand-700);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px;}
.btn-lg{height:56px;padding:0 34px;font-size:17px;clip-path:polygon(0 0,calc(100% - 4px) 0,100% 4px,100% 100%,4px 100%,0 calc(100% - 4px));}
.btn-light{background:#FFFFFF;color:var(--brand-900);}
.btn-light:hover{background:var(--accent-100);color:var(--brand-900);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-outline-light{background:transparent;color:#F2F5F3;border:1.5px solid rgba(247,246,242,.55);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;}
.link-arrow{font-weight:600;color:var(--brand-700);position:relative;padding-bottom:2px;}
.link-arrow::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand-500);transition:width .3s ease;}
.link-arrow:hover::after{width:100%;}

/* ---------- 标签 / 徽章 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--brand-700);
  background:rgba(18,160,133,.10);border-radius:999px;padding:4px 12px;
}
.tag--accent{color:#8A5512;background:var(--accent-100);}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--ink-600);
  background:var(--surface);border:1px solid var(--line);
  border-radius:999px;padding:6px 14px;box-shadow:var(--shadow-1);
}
.badge i{color:var(--brand-500);font-size:12px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,246,242,.96);
  border-bottom:1px solid transparent;
  transition:box-shadow .3s ease,background-color .3s ease,border-color .3s ease;
}
.site-header.is-scrolled{background:#FFFFFF;border-bottom-color:var(--line);box-shadow:var(--shadow-1);}
.nav-row{height:72px;flex-wrap:nowrap;}
.nav-left,.nav-right{display:flex;align-items:center;gap:26px;flex:1 1 0;min-width:0;}
.nav-right{justify-content:flex-end;gap:20px;}
.nav-link{
  position:relative;font-size:15px;font-weight:600;color:var(--ink-600);
  padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--brand-500);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-link:hover{color:var(--brand-700);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-700);}
.nav-link.is-active::after{transform:scaleX(1);}
.brand{
  display:flex;align-items:center;gap:10px;flex:0 0 auto;
  padding:0 28px;font-weight:700;font-size:19px;color:var(--ink-900);
}
.brand-mark{
  width:30px;height:30px;border-radius:9px;
  background:linear-gradient(135deg,var(--brand-500),var(--brand-900));
  position:relative;flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;left:9px;top:9px;width:12px;height:12px;
  border:2.5px solid #FFFFFF;border-radius:4px;border-right-color:transparent;border-bottom-color:transparent;
  transform:rotate(45deg);
}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--ink-900);font-size:16px;
}
.mobile-drawer{
  display:none;background:#fff;border-top:1px solid var(--line);
  padding:18px 20px 24px;box-shadow:var(--shadow-2);
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer a{display:block;padding:12px 4px;font-size:16px;font-weight:600;color:var(--ink-900);border-bottom:1px solid var(--line);}
.mobile-drawer a:last-of-type{border-bottom:0;}
.mobile-drawer .btn{width:100%;margin-top:16px;}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:84px 0 92px;background:var(--bg);}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;opacity:.12;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(18,160,133,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(18,160,133,.07) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,0));
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,0));
}
.hero-blob{
  position:absolute;right:-120px;top:40px;width:520px;height:520px;
  background:rgba(18,160,133,.08);transform:rotate(18deg) skewY(-6deg);
  border-radius:80px;z-index:0;
}
.hero .container{position:relative;z-index:2;}
.hero-copy{max-width:600px;}
.hero h1{margin-bottom:18px;}
.hero-sub{font-size:18px;line-height:1.75;color:var(--ink-600);margin-bottom:28px;max-width:520px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;}
.hero-figure{position:relative;padding-left:32px;}
.shot-card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:20px;padding:14px;box-shadow:var(--shadow-2);
  transform:rotate(-1.5deg);
}
.shot-card img{aspect-ratio:16/10;object-fit:cover;width:100%;}
.float-card{
  position:absolute;left:-14px;bottom:-28px;
  background:#FFFFFF;border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--shadow-2);padding:14px 18px;min-width:190px;
}
.float-card .num{font-family:var(--mono);font-size:22px;font-weight:700;color:var(--brand-700);line-height:1.2;}
.float-card .cap{font-size:13px;color:var(--ink-300);}

/* ---------- 信任条 ---------- */
.trust-bar{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.trust-item{padding:26px 24px;border-right:1px solid var(--line);}
.trust-item:last-child{border-right:0;}
.trust-item .k{font-family:var(--mono);font-size:19px;font-weight:700;color:var(--ink-900);display:block;margin-bottom:4px;}
.trust-item .v{font-size:14px;color:var(--ink-300);}

/* ---------- 价值区 ---------- */
.value-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:24px;}
.vcard{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.vcard:hover{transform:translateY(-4px);border-color:rgba(18,160,133,.3);box-shadow:var(--shadow-2);}
.vcard-hero{display:flex;flex-direction:column;}
.vcard-hero img{aspect-ratio:16/9;object-fit:cover;margin-bottom:22px;}
.vcard h3{margin-bottom:10px;}
.vcard p{font-size:15px;margin-bottom:14px;}
.vcard .mini-list{list-style:none;padding:0;margin:0;}
.vcard .mini-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;margin-bottom:10px;}
.vcard .mini-list i{color:var(--brand-500);margin-top:6px;font-size:12px;}
.value-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.vcard-sm{display:flex;gap:18px;align-items:flex-start;}
.vcard-sm img{width:110px;height:110px;flex:0 0 auto;object-fit:cover;}
.vcard-sm .txt h3{font-size:18px;margin-bottom:8px;}
.vcard-sm .txt p{font-size:14px;margin:0;}

/* ---------- 轮播 ---------- */
.shots{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.shot-stage{position:relative;border:1px solid var(--line);border-radius:20px;overflow:hidden;background:var(--bg);}
.shot-slide{display:none;}
.shot-slide.is-active{display:block;}
.shot-slide img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;}
.shot-caption{padding:18px 24px;background:var(--surface);border-top:1px solid var(--line);}
.shot-caption strong{display:block;color:var(--ink-900);font-size:16px;margin-bottom:4px;}
.shot-caption span{font-size:14px;color:var(--ink-300);}
.shot-nav{
  position:absolute;top:50%;transform:translateY(-50%);
  width:44px;height:44px;border-radius:50%;background:#FFFFFF;border:1px solid var(--line);
  color:var(--ink-900);box-shadow:var(--shadow-1);display:flex;align-items:center;justify-content:center;
  transition:background-color .25s ease,color .25s ease;
}
.shot-nav:hover{background:var(--brand-500);color:#fff;border-color:var(--brand-500);}
.shot-prev{left:14px;}
.shot-next{right:14px;}
.shot-thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:18px;}
.shot-thumb{
  border:1.5px solid var(--line);border-radius:12px;overflow:hidden;background:#fff;
  padding:0;transition:border-color .25s ease,transform .25s ease;
}
.shot-thumb img{aspect-ratio:16/10;object-fit:cover;width:100%;}
.shot-thumb.is-active{border-color:var(--brand-500);transform:translateY(-2px);}
.shot-dots{display:flex;justify-content:center;gap:8px;margin-top:20px;}
.shot-dot{width:9px;height:9px;border-radius:50%;background:var(--line);transition:background-color .25s ease,width .25s ease;}
.shot-dot.is-active{background:var(--brand-500);width:26px;border-radius:999px;}

/* ---------- 系统要求 ---------- */
.req-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.req-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);}
.req-card header{padding:18px 24px;background:#EEF4F1;border-bottom:1px solid var(--line);}
.req-card header h3{margin:0;font-size:17px;}
.req-card header span{font-size:13px;color:var(--ink-300);}
.req-row{display:flex;justify-content:space-between;gap:16px;padding:14px 24px;}
.req-row:nth-child(even){background:#FAFBF9;}
.req-row .label{font-size:15px;color:var(--ink-600);}
.req-row .val{font-family:var(--mono);font-size:14px;color:var(--ink-900);text-align:right;}

/* ---------- 评价墙 ---------- */
.reviews{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.wall{columns:3;column-gap:24px;}
.review{
  break-inside:avoid;background:var(--bg);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;margin-bottom:24px;transition:transform .3s ease,box-shadow .3s ease;
}
.review:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.review .who{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.review .avatar{
  width:44px;height:44px;border-radius:50%;background:rgba(18,160,133,.14);
  color:var(--brand-700);font-weight:700;display:flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.review .who strong{display:block;font-size:15px;color:var(--ink-900);line-height:1.3;}
.review .who span{font-size:13px;color:var(--ink-300);}
.review .stars{color:var(--accent-500);font-size:13px;letter-spacing:2px;margin-bottom:8px;}
.review p{font-size:15px;margin:0;}

/* ---------- 深色下载区 ---------- */
.download{background:var(--dark);color:rgba(247,246,242,.9);position:relative;overflow:hidden;}
.download::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-3.webp);
  background-size:cover;background-position:center;opacity:.10;
}
.download .container{position:relative;z-index:2;}
.download h2{color:#FFFFFF;}
.download p{color:rgba(247,246,242,.78);}
.dl-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin:28px 0 16px;}
.dl-meta{font-family:var(--mono);font-size:13px;color:rgba(247,246,242,.62);}
.dl-panel{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:20px;padding:26px;box-shadow:var(--shadow-dark);
}
.dl-panel h3{color:#FFFFFF;font-size:17px;margin-bottom:14px;}
.dl-panel ul{list-style:none;padding:0;margin:0;}
.dl-panel li{display:flex;justify-content:space-between;gap:12px;font-size:14px;padding:9px 0;border-bottom:1px dashed rgba(255,255,255,.14);}
.dl-panel li:last-child{border-bottom:0;}
.dl-panel .mono{color:rgba(247,246,242,.85);}

/* ---------- 最新信息 ---------- */
.news-list{margin-top:8px;}
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;color:inherit;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(18,160,133,.3);box-shadow:var(--shadow-2);color:inherit;}
.news-thumb{overflow:hidden;aspect-ratio:16/9;background:var(--bg);}
.news-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s ease;}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{padding:22px;display:flex;flex-direction:column;flex:1 1 auto;}
.news-body h3{font-size:18px;margin:12px 0 10px;line-height:1.5;}
.news-body p{font-size:14px;color:var(--ink-600);margin-bottom:18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--ink-300);}
.news-more{color:var(--brand-700);font-weight:600;}
.empty-state{
  text-align:center;background:var(--surface);border:1px dashed var(--line);
  border-radius:var(--r-card);padding:56px 24px;
}
.empty-state i{font-size:30px;color:var(--brand-500);margin-bottom:14px;display:block;}
.empty-state p{margin-bottom:18px;}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}

/* ---------- FAQ ---------- */
.faq-wrap{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 26px;text-align:left;font-size:16px;font-weight:600;color:var(--ink-900);
  transition:background-color .25s ease;
}
.faq-q:hover{background:#FAFBF9;}
.faq-q i{color:var(--brand-500);transition:transform .3s ease;font-size:14px;}
.faq-item.is-open .faq-q{background:#F4F8F6;}
.faq-item.is-open .faq-q i{transform:rotate(180deg);}
.faq-a{display:none;padding:0 26px 22px;font-size:15px;line-height:1.85;color:var(--ink-600);}
.faq-item.is-open .faq-a{display:block;}
.faq-a a{font-weight:600;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(247,246,242,.78);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
.site-footer h4{color:#FFFFFF;font-size:15px;font-weight:600;margin-bottom:18px;}
.site-footer h4::after{content:"";display:block;width:28px;height:2px;background:var(--brand-500);margin-top:8px;border-radius:2px;}
.site-footer a{color:rgba(247,246,242,.78);font-size:14px;}
.site-footer a:hover{color:var(--accent-500);}
.footer-links{list-style:none;padding:0;margin:0;}
.footer-links li{margin-bottom:10px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:#fff;font-weight:700;font-size:19px;}
.footer-brand .brand-mark{width:28px;height:28px;border-radius:8px;}
.footer-brand .brand-mark::after{left:8px;top:8px;width:11px;height:11px;}
.footer-desc{font-size:14px;line-height:1.85;max-width:320px;}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.14);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(247,246,242,.6);
}
.to-top{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;
  color:rgba(247,246,242,.8);border:1px solid rgba(255,255,255,.22);
  border-radius:999px;padding:7px 16px;transition:background-color .25s ease,color .25s ease;
}
.to-top:hover{background:var(--brand-500);border-color:var(--brand-500);color:#fff;}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .section{padding:72px 0;}
  .nav-left,.nav-right{gap:16px;}
  .nav-right .btn{display:none;}
  .brand{padding:0 16px;}
  .hero{padding:64px 0 72px;}
  .hero-figure{padding-left:0;margin-top:52px;}
  .shot-card{transform:none;}
  .float-card{left:8px;bottom:-24px;}
  .value-grid{grid-template-columns:1fr;}
  .req-grid{grid-template-columns:1fr;}
  .wall{columns:2;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:899px){
  .nav-left,.nav-right{display:none;}
  .menu-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-row{justify-content:space-between;}
  .brand{padding:0;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:28px;}
  .trust-grid{grid-template-columns:1fr 1fr;}
  .trust-item{border-right:0;border-bottom:1px solid var(--line);padding:20px;}
  .trust-item:nth-child(odd){border-right:1px solid var(--line);}
  .shot-thumbs{grid-template-columns:repeat(2,1fr);}
  .shot-nav{width:38px;height:38px;}
  .wall{columns:1;}
  .card-grid{grid-template-columns:1fr;}
  .vcard-sm{flex-direction:column;}
  .vcard-sm img{width:100%;height:170px;}
  .dl-actions .btn{width:100%;}
  .faq-q{padding:18px 20px;font-size:15px;}
  .faq-a{padding:0 20px 20px;}
  .footer-grid{grid-template-columns:1fr;}
  .hero-cta .btn{width:100%;}
}
@media (max-width:520px){
  h1{font-size:27px;}
  .brand{font-size:17px;}
  .trust-grid{grid-template-columns:1fr;}
  .trust-item:nth-child(odd){border-right:0;}
  .shot-thumbs{grid-template-columns:1fr 1fr;gap:10px;}
  .float-card{position:static;margin-top:16px;width:100%;}
}

/* roulang page: category1 */
:root{
  --brand-500:#12A085;
  --brand-700:#0E6B5A;
  --brand-900:#0B3B33;
  --accent-500:#F2A03D;
  --accent-100:#FDF0DC;
  --ink-900:#14201E;
  --ink-600:#4A5A57;
  --ink-300:#8B9995;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E2E5E1;
  --dark:#0B3B33;
  --ok:#1B8A5A;
  --warn:#B4531F;
  --err:#C0392B;
  --mono:"Roboto Mono",SFMono-Regular,Consolas,"Liberation Mono",monospace;
  --shadow-1:0 1px 2px rgba(20,32,30,.06);
  --shadow-2:0 12px 28px rgba(20,32,30,.10);
  --radius-card:16px;
  --radius-btn:12px;
  --radius-lg:20px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-600);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:700;line-height:1.3;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--brand-700);text-decoration:none;text-underline-offset:3px;}
a:hover{color:var(--accent-500);}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.mono{font-family:var(--mono);}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ------- 导航 ------- */
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand-900);color:#fff;padding:10px 16px;z-index:200;border-radius:0 0 8px 0;}
.skip-link:focus{left:0;}
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(255,255,255,.98);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-1);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:72px;}
.nav-left,.nav-right{display:flex;align-items:center;gap:4px;flex:1 1 0;min-width:0;}
.nav-right{justify-content:flex-end;}
.nav-link{
  position:relative;display:inline-block;
  padding:8px 12px;font-size:15px;line-height:1.4;
  color:var(--ink-600);border-radius:8px;white-space:nowrap;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand-500);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-link:hover{color:var(--brand-700);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-700);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.brand{
  display:flex;align-items:center;gap:10px;
  font-size:20px;font-weight:700;color:var(--ink-900);letter-spacing:.5px;
  white-space:nowrap;flex:0 0 auto;
}
.brand:hover{color:var(--ink-900);}
.brand-mark{
  width:30px;height:30px;border-radius:9px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand-500) 0%,var(--brand-700) 100%);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:9px;border:2px solid rgba(255,255,255,.9);
  border-radius:3px;border-right-color:transparent;border-bottom-color:transparent;
}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  height:38px;padding:0 16px;margin-left:8px;
  background:var(--accent-500);color:var(--ink-900);
  font-size:14px;font-weight:600;border-radius:10px;
  box-shadow:var(--shadow-1);transition:transform .2s ease,background .2s ease,box-shadow .2s ease;
}
.nav-cta:hover{background:#E9942E;color:var(--ink-900);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.menu-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink-900);font-size:17px;align-items:center;justify-content:center;}
.mobile-drawer{
  display:none;position:fixed;inset:72px 0 0 0;background:#fff;z-index:80;
  padding:24px 20px 32px;overflow-y:auto;
  transform:translateY(-12px);opacity:0;pointer-events:none;transition:opacity .25s ease,transform .25s ease;
}
.mobile-drawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
.mobile-drawer a{display:block;padding:14px 4px;font-size:16px;color:var(--ink-900);border-bottom:1px solid var(--line);}
.mobile-drawer .drawer-cta{margin-top:20px;text-align:center;background:var(--accent-500);color:var(--ink-900);border-radius:12px;border-bottom:0;font-weight:600;}
body.nav-open{overflow:hidden;}

/* ------- Hero ------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:64px 0 52px;
  background-image:linear-gradient(100deg,rgba(11,59,51,.92) 0%,rgba(11,59,51,.78) 48%,rgba(14,107,90,.62) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;right:-80px;top:-60px;width:320px;height:320px;
  background:var(--brand-500);opacity:.14;transform:rotate(24deg);border-radius:40px;
}
.hero-inner{position:relative;z-index:2;max-width:820px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(247,246,242,.75);margin-bottom:20px;}
.breadcrumb a{color:rgba(247,246,242,.9);}
.breadcrumb a:hover{color:var(--accent-500);}
.breadcrumb span.sep{opacity:.55;}
.page-hero h1{
  color:#FFFFFF;font-size:clamp(28px,4vw,42px);line-height:1.25;font-weight:700;
  margin-bottom:16px;
}
.page-hero .hero-sub{
  color:rgba(247,246,242,.88);font-size:17px;line-height:1.75;max-width:640px;
}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:500;
  background:rgba(255,255,255,.14);color:#F7F6F2;border:1px solid rgba(247,246,242,.28);
}
.badge i{font-size:12px;color:var(--accent-500);}
.badge.solid{background:var(--accent-100);color:var(--warn);border-color:rgba(242,160,61,.4);}

/* ------- 锚点标签条 ------- */
.anchor-bar{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:72px;z-index:70;}
.anchor-scroll{display:flex;gap:8px;overflow-x:auto;padding:12px 0;scrollbar-width:none;}
.anchor-scroll::-webkit-scrollbar{display:none;}
.anchor-scroll a{
  flex:0 0 auto;padding:7px 14px;border-radius:999px;font-size:14px;
  color:var(--ink-600);background:var(--bg);border:1px solid var(--line);
  transition:all .2s ease;white-space:nowrap;
}
.anchor-scroll a:hover{color:var(--brand-700);border-color:rgba(18,160,133,.4);background:#fff;}

/* ------- 主体布局 ------- */
.section{padding:88px 0;}
.section.tight{padding:64px 0;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head h2{font-size:clamp(24px,3vw,32px);margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--ink-600);}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:1px;
  color:var(--brand-700);background:rgba(18,160,133,.1);
  padding:5px 12px;border-radius:999px;margin-bottom:14px;
}
.product-layout{display:grid;grid-template-columns:236px minmax(0,1fr);gap:48px;align-items:start;}
.side-toc{position:sticky;top:150px;}
.side-toc .toc-title{font-size:13px;font-weight:600;letter-spacing:1px;color:var(--ink-300);margin-bottom:14px;}
.side-toc ul li a{
  display:flex;align-items:center;gap:10px;
  padding:10px 12px;border-radius:10px;font-size:14.5px;color:var(--ink-600);
  transition:background .2s ease,color .2s ease;
}
.side-toc ul li a::before{
  content:"";width:4px;height:16px;border-radius:2px;background:var(--line);transition:background .2s ease;
}
.side-toc ul li a:hover{background:#fff;color:var(--brand-700);}
.side-toc ul li a:hover::before{background:var(--brand-500);}
.toc-note{margin-top:20px;padding:16px;border-radius:14px;background:var(--accent-100);font-size:13px;line-height:1.7;color:var(--warn);}

/* ------- 功能块 ------- */
.feature-list{display:flex;flex-direction:column;gap:24px;}
.feature-block{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-1);scroll-margin-top:160px;
  transition:border-color .3s ease,box-shadow .3s ease,transform .3s ease;
}
.feature-block:hover{border-color:rgba(18,160,133,.3);box-shadow:var(--shadow-2);transform:translateY(-3px);}
.feature-head{display:flex;gap:16px;align-items:flex-start;margin-bottom:20px;}
.feature-icon{
  width:48px;height:48px;flex:0 0 auto;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(18,160,133,.1);color:var(--brand-700);font-size:19px;
}
.feature-head h3{font-size:20px;font-weight:600;margin-bottom:8px;}
.feature-head p{font-size:15px;line-height:1.8;}
.feature-body{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;align-items:start;}
.point-list{display:flex;flex-direction:column;gap:12px;}
.point-list li{display:flex;gap:10px;font-size:15px;line-height:1.75;color:var(--ink-600);}
.point-list li i{color:var(--brand-500);font-size:14px;margin-top:6px;flex:0 0 auto;}
.shot{
  border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--bg);
}
.shot img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease;}
.shot:hover img{transform:scale(1.03);}

/* ------- 数据条 ------- */
.stat-strip{background:var(--dark);border-radius:var(--radius-lg);padding:40px 32px;}
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.stat-item{border-left:2px solid rgba(242,160,61,.5);padding-left:18px;}
.stat-num{font-family:var(--mono);font-size:30px;font-weight:700;color:#F7F6F2;line-height:1.2;}
.stat-label{font-size:14px;color:rgba(247,246,242,.72);margin-top:6px;}

/* ------- 场景卡 ------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.scene-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(18,160,133,.3);}
.scene-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.scene-card .scene-inner{padding:24px;}
.scene-card h3{font-size:17px;margin-bottom:10px;}
.scene-card p{font-size:14.5px;line-height:1.75;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tag{
  font-size:12.5px;padding:4px 10px;border-radius:999px;
  background:var(--bg);color:var(--ink-600);border:1px solid var(--line);
}
.tag.brand{background:rgba(18,160,133,.1);color:var(--brand-700);border-color:rgba(18,160,133,.24);}

/* ------- FAQ ------- */
.faq-list{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 24px;text-align:left;font-size:16px;font-weight:600;color:var(--ink-900);
  line-height:1.6;transition:background .2s ease,color .2s ease;
}
.faq-q:hover{background:#FAFAF8;color:var(--brand-700);}
.faq-q i{font-size:14px;color:var(--brand-500);transition:transform .3s ease;flex:0 0 auto;}
.faq-item.is-open .faq-q{color:var(--brand-700);}
.faq-item.is-open .faq-q i{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;}
.faq-item.is-open .faq-a{max-height:420px;}
.faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--ink-600);}

/* ------- CTA ------- */
.cta-band{
  background:var(--dark);border-radius:var(--radius-lg);
  padding:56px 48px;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-60px;bottom:-80px;width:280px;height:280px;
  background:rgba(18,160,133,.22);transform:rotate(20deg);border-radius:44px;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:36px;align-items:center;}
.cta-band h2{color:#FFFFFF;font-size:clamp(23px,2.6vw,30px);margin-bottom:12px;}
.cta-band p{color:rgba(247,246,242,.78);font-size:15.5px;max-width:560px;}
.cta-actions{display:flex;flex-direction:column;gap:14px;min-width:230px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .2s ease,background .2s ease,box-shadow .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--accent-500);color:var(--ink-900);box-shadow:var(--shadow-1);}
.btn-primary:hover{background:#E9942E;color:var(--ink-900);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);background:#DB8824;}
.btn-ghost{background:transparent;color:var(--brand-700);border:1.5px solid var(--brand-500);}
.btn-ghost:hover{background:rgba(18,160,133,.08);color:var(--brand-700);}
.btn-ghost-light{background:transparent;color:#F7F6F2;border:1.5px solid rgba(247,246,242,.5);}
.btn-ghost-light:hover{background:rgba(247,246,242,.12);color:#fff;}
.btn-lg{height:56px;font-size:17px;}
.cta-meta{font-family:var(--mono);font-size:12.5px;color:rgba(247,246,242,.6);text-align:center;}

/* ------- 页脚 ------- */
.site-footer{background:var(--dark);color:rgba(247,246,242,.82);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:#F7F6F2;margin-bottom:16px;}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(247,246,242,.68);max-width:320px;}
.site-footer h4{font-size:15px;font-weight:600;color:rgba(18,160,133,.95);margin:0 0 16px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:rgba(247,246,242,.75);}
.footer-links a:hover{color:var(--accent-500);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(247,246,242,.14);padding:20px 0 28px;font-size:13px;color:rgba(247,246,242,.6);
}
.to-top{display:inline-flex;align-items:center;gap:8px;color:rgba(247,246,242,.75);font-size:13px;}
.to-top:hover{color:var(--accent-500);}

/* ------- 响应式 ------- */
@media (max-width:1023px){
  .container{padding:0 24px;}
  .nav-left,.nav-right{display:none;}
  .menu-toggle{display:inline-flex;}
  .mobile-drawer{display:block;}
  .header-inner{justify-content:space-between;}
  .product-layout{grid-template-columns:1fr;gap:0;}
  .side-toc{display:none;}
  .feature-body{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-inner{grid-template-columns:1fr;}
  .cta-actions{flex-direction:row;flex-wrap:wrap;min-width:0;}
  .cta-band{padding:44px 32px;}
  .section{padding:72px 0;}
  .anchor-bar{top:72px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .page-hero{padding:48px 0 40px;}
  .section{padding:56px 0;}
  .scene-grid{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:1fr;}
  .stat-item{border-left-width:2px;}
  .feature-block{padding:22px;}
  .feature-head{flex-direction:column;gap:12px;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .faq-q{padding:16px 18px;font-size:15px;}
  .faq-a p{padding:0 18px 18px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .brand{font-size:18px;}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-desc{max-width:none;}
}

/* roulang page: article */
:root{
  --brand-500:#12A085;
  --brand-700:#0E6B5A;
  --brand-900:#0B3B33;
  --accent-500:#F2A03D;
  --accent-600:#E4902A;
  --accent-100:#FDF0DC;
  --ink-900:#14201E;
  --ink-600:#4A5A57;
  --ink-300:#8B9995;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E2E5E1;
  --dark:#0B3B33;
  --success:#1B8A5A;
  --warn:#B4531F;
  --danger:#C0392B;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-lg:20px;
  --shadow-1:0 1px 2px rgba(20,32,30,.06);
  --shadow-2:0 12px 28px rgba(20,32,30,.10);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --font-mono:"Roboto Mono","SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-600);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{
  margin:0;
  color:var(--ink-900);
  font-family:var(--font-sans);
  line-height:1.35;
  font-weight:700;
}
p{margin:0 0 16px;}
a{color:var(--brand-700);text-decoration:none;transition:color .25s ease;}
a:hover{color:var(--accent-500);}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;border:0;background:none;cursor:pointer;color:inherit;}
input,textarea,select{font-family:inherit;font-size:inherit;}
.mono{font-family:var(--font-mono);}
.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%;}
.section{padding:88px 0;}
.section-sm{padding:56px 0;}
.section-head{margin-bottom:32px;max-width:680px;}
.section-head h2{font-size:clamp(24px,3vw,32px);margin-bottom:12px;}
.section-head p{color:var(--ink-600);font-size:16px;margin:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--brand-700);text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:20px;height:2px;border-radius:2px;background:var(--brand-500);}

/* ============ Header / Nav ============ */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(247,246,242,.94);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:var(--shadow-1);}
.header-inner{position:relative;}
.nav-row{display:flex;align-items:center;height:72px;}
.nav-row > .cell{padding-left:0;padding-right:0;}
.nav-left{flex:1 1 0;display:flex;align-items:center;gap:2px;min-width:0;justify-content:flex-start;}
.nav-right{flex:1 1 0;display:flex;align-items:center;gap:8px;min-width:0;justify-content:flex-end;}
.nav-logo{flex:0 0 auto;display:flex;align-items:center;justify-content:center;padding:0 26px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--ink-900);letter-spacing:.01em;}
.brand:hover{color:var(--ink-900);}
.brand-mark{
  width:26px;height:26px;border-radius:8px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand-500),var(--brand-700));
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:7px;border-radius:3px;
  background:var(--accent-500);
}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:72px;
  padding:0 14px;font-size:15px;font-weight:500;color:var(--ink-600);
  white-space:nowrap;transition:color .25s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:20px;height:2px;
  border-radius:2px;background:var(--brand-500);
  transform:scaleX(0);transform-origin:center;transition:transform .25s ease;
}
.nav-link:hover{color:var(--brand-700);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-700);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--ink-900);
  align-items:center;justify-content:center;font-size:17px;
}
.menu-toggle:hover{border-color:var(--brand-500);color:var(--brand-700);}
.mobile-drawer{
  display:none;position:absolute;left:0;right:0;top:72px;
  background:#fff;border:1px solid var(--line);border-top:0;
  border-radius:0 0 18px 18px;box-shadow:var(--shadow-2);
  padding:12px 20px 22px;flex-direction:column;gap:4px;
}
.mobile-drawer.is-open{display:flex;}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 4px;font-size:16px;font-weight:500;color:var(--ink-900);
  border-bottom:1px solid var(--line);
}
.drawer-link.is-active{color:var(--brand-700);}
.drawer-link::after{content:"\f054";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;color:var(--ink-300);}
.drawer-btn{margin-top:16px;width:100%;}

/* ============ Buttons / Badges ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;line-height:1;
  border:1.5px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background .25s ease,color .25s ease,border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.btn:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}
.btn-primary{background:var(--accent-500);color:var(--ink-900);}
.btn-primary:hover{background:var(--accent-600);color:var(--ink-900);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);box-shadow:none;background:#D9861F;}
.btn-ghost{background:transparent;border-color:var(--brand-500);color:var(--brand-700);}
.btn-ghost:hover{background:rgba(18,160,133,.08);color:var(--brand-700);}
.btn-ghost-light{background:transparent;border-color:rgba(247,246,242,.45);color:#F7F6F2;}
.btn-ghost-light:hover{background:rgba(247,246,242,.14);border-color:rgba(247,246,242,.75);color:#fff;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-lg{height:56px;padding:0 30px;font-size:17px;}
.btn-block{width:100%;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:13px;font-weight:500;
  background:#EAF6F2;color:var(--brand-700);border:1px solid rgba(18,160,133,.2);
}
.badge-accent{background:var(--accent-100);color:var(--warn);border-color:rgba(242,160,61,.35);}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:999px;font-size:13px;
  background:#fff;border:1px solid var(--line);color:var(--ink-600);
  transition:border-color .25s ease,color .25s ease,background .25s ease;
}
.tag:hover{border-color:rgba(18,160,133,.45);color:var(--brand-700);background:#F4FAF8;}

/* ============ Page banner ============ */
.page-banner{
  position:relative;overflow:hidden;
  padding:48px 0 44px;
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(180deg,rgba(247,246,242,.93),rgba(247,246,242,.99)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.page-banner::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(18,160,133,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(18,160,133,.055) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 85%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 85%);
}
.page-banner .container{position:relative;z-index:1;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-300);margin-bottom:22px;}
.breadcrumb a{color:var(--ink-600);}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb .sep{color:var(--ink-300);}
.breadcrumb .current{color:var(--ink-900);font-weight:500;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.banner-cat{display:inline-flex;align-items:center;gap:8px;margin-bottom:16px;}
.banner-title{
  font-size:clamp(26px,3.6vw,40px);
  line-height:1.28;font-weight:700;color:var(--ink-900);
  max-width:900px;margin-bottom:20px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:14px;color:var(--ink-300);}
.meta-item{display:inline-flex;align-items:center;gap:8px;}
.meta-item i{color:var(--brand-500);font-size:13px;}
.meta-item a{color:var(--ink-600);}
.meta-item a:hover{color:var(--brand-700);}

/* ============ Article layout ============ */
.article-section{padding:56px 0 72px;}
.article-grid{margin:0 -15px;}
.article-grid > .cell{padding:0 15px;}
.article-main{min-width:0;}
.article-inner{max-width:760px;}
.article-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:38px 40px;
  box-shadow:var(--shadow-1);
}
.article-body{font-size:16px;line-height:1.9;color:var(--ink-600);}
.article-body > *:last-child{margin-bottom:0;}
.article-body p{margin-bottom:24px;}
.article-body h2{
  position:relative;font-size:23px;font-weight:700;color:var(--ink-900);
  margin:40px 0 18px;padding-left:16px;line-height:1.4;scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;width:4px;height:20px;
  border-radius:2px;background:var(--brand-500);
}
.article-body h3{font-size:19px;font-weight:600;color:var(--ink-900);margin:32px 0 14px;scroll-margin-top:96px;}
.article-body ul,.article-body ol{margin:0 0 24px 0;padding-left:22px;}
.article-body ul li{position:relative;margin-bottom:10px;padding-left:16px;}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:50%;
  background:var(--brand-500);
}
.article-body ol{list-style:decimal;padding-left:24px;}
.article-body ol li{margin-bottom:10px;padding-left:4px;}
.article-body blockquote{
  margin:28px 0;padding:18px 24px;
  border-left:3px solid var(--brand-500);background:#F1F7F5;
  border-radius:0 12px 12px 0;color:var(--ink-600);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  width:100%;height:auto;margin:26px auto;border-radius:12px;
  border:1px solid var(--line);object-fit:cover;
}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:var(--ink-300);text-align:center;margin-top:10px;}
.article-body a{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--accent-500);}
.article-body table{
  width:100%;border-collapse:collapse;margin:26px 0;font-size:14px;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;
}
.article-body th{background:#F1F7F5;font-weight:600;color:var(--ink-900);text-align:left;}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);}
.article-body tr:last-child td{border-bottom:0;}
.article-body code{
  font-family:var(--font-mono);font-size:14px;background:#F1F7F5;
  color:var(--brand-900);padding:2px 6px;border-radius:6px;
}
.article-body pre{
  background:var(--dark);color:#EFEDE6;padding:18px 20px;border-radius:12px;
  overflow-x:auto;margin:26px 0;
}
.article-body pre code{background:none;color:inherit;padding:0;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}

.article-foot{
  margin-top:38px;padding-top:26px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.back-cat{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:8px;}

/* ============ Side column ============ */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-1);
}
.side-title{font-size:15px;font-weight:600;color:var(--ink-900);margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-title i{color:var(--brand-500);font-size:14px;}
.toc-list{display:flex;flex-direction:column;gap:2px;counter-reset:toc;}
.toc-list li a{
  display:block;font-size:14px;color:var(--ink-600);line-height:1.6;
  padding:8px 10px;border-left:2px solid transparent;border-radius:0 8px 8px 0;
  transition:all .22s ease;
}
.toc-list li a:hover{background:#F1F7F5;border-left-color:var(--brand-500);color:var(--brand-700);}
.toc-empty{font-size:13px;color:var(--ink-300);margin:0;}
.dl-card p{font-size:14px;margin-bottom:16px;color:var(--ink-600);}
.side-note{font-size:12px;color:var(--ink-300);margin:12px 0 0;text-align:center;}

/* ============ Empty state ============ */
.empty-state{text-align:center;padding:56px 24px;}
.empty-icon{
  width:72px;height:72px;border-radius:20px;margin:0 auto 22px;
  display:flex;align-items:center;justify-content:center;
  background:#F1F7F5;color:var(--brand-500);font-size:28px;
}
.empty-state h2{font-size:22px;margin-bottom:12px;}
.empty-state p{color:var(--ink-600);margin-bottom:24px;}

/* ============ CTA dark ============ */
.cta-section{padding:0 0 88px;}
.cta-panel{
  position:relative;overflow:hidden;
  background:var(--dark);border-radius:var(--radius-lg);
  padding:52px 56px;display:flex;flex-wrap:wrap;gap:36px;
  align-items:center;justify-content:space-between;
  box-shadow:0 16px 32px rgba(0,0,0,.22);
}
.cta-panel::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;
  border-radius:50%;background:rgba(18,160,133,.22);pointer-events:none;
}
.cta-text{position:relative;z-index:1;max-width:560px;}
.cta-text h2{color:#F7F6F2;font-size:clamp(22px,2.6vw,28px);margin-bottom:12px;}
.cta-text p{color:rgba(247,246,242,.78);font-size:15px;margin:0;}
.cta-actions{position:relative;z-index:1;display:flex;flex-direction:column;gap:12px;min-width:280px;}
.cta-actions .btn-row{display:flex;gap:12px;flex-wrap:wrap;}
.cta-note{font-size:12px;color:rgba(247,246,242,.6);text-align:center;margin:0;}

/* ============ Related ============ */
.related-section{padding:0 0 88px;}
.rec-grid{margin:0 -15px;}
.rec-grid > .cell{padding:0 15px;margin-bottom:30px;}
.post-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(18,160,133,.3);box-shadow:var(--shadow-2);}
.post-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg);border-bottom:1px solid var(--line);}
.post-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.post-card:hover .post-media img{transform:scale(1.03);}
.post-media .badge{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.94);}
.post-body{padding:22px;display:flex;flex-direction:column;flex:1;}
.post-body h3{font-size:17px;font-weight:600;margin-bottom:10px;line-height:1.5;}
.post-body p{font-size:14px;color:var(--ink-600);margin-bottom:16px;}
.post-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-300);}
.post-meta .more{color:var(--brand-700);font-weight:600;}

/* ============ FAQ ============ */
.faq-section{padding:0 0 96px;}
.faq-wrap{display:grid;grid-template-columns:1fr;gap:8px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-1);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:16px 24px;font-size:16px;font-weight:600;
  color:var(--ink-900);text-align:left;transition:background .25s ease,color .25s ease;
}
.faq-q:hover{background:#F4FAF8;color:var(--brand-700);}
.faq-q .plus{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:#F1F7F5;color:var(--brand-700);font-size:12px;
  transition:transform .3s ease,background .3s ease,color .3s ease;
}
.faq-item.is-open .faq-q .plus{transform:rotate(180deg);background:var(--brand-500);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;}
.faq-item.is-open .faq-a{max-height:360px;}
.faq-a-inner{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--ink-600);}
.faq-a-inner p:last-child{margin-bottom:0;}

/* ============ Footer ============ */
.site-footer{background:var(--dark);color:rgba(247,246,242,.9);padding:64px 0 0;margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid rgba(247,246,242,.14);
}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:#F7F6F2;margin-bottom:16px;}
.footer-brand .brand-mark{width:24px;height:24px;border-radius:7px;}
.footer-brand .brand-mark::after{inset:6px;}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(247,246,242,.66);margin:0;max-width:340px;}
.site-footer h4{font-size:15px;font-weight:600;color:rgba(247,246,242,.95);margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14px;color:rgba(247,246,242,.72);}
.footer-links a:hover{color:var(--accent-500);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  padding:22px 0 26px;font-size:13px;color:rgba(247,246,242,.55);
}
.to-top{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;
  color:rgba(247,246,242,.75);border:1px solid rgba(247,246,242,.25);
  padding:8px 16px;border-radius:999px;transition:all .25s ease;
}
.to-top:hover{color:var(--accent-500);border-color:rgba(242,160,61,.6);}

/* ============ Responsive ============ */
@media screen and (max-width:1023px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .nav-left,.nav-right{display:none;}
  .menu-toggle{display:inline-flex;}
  .nav-row{justify-content:space-between;}
  .nav-logo{padding:0;order:-1;}
  .nav-row::after{content:"";width:42px;}
  .article-side{position:static;margin-top:28px;}
  .article-card{padding:30px 26px;}
  .cta-panel{padding:40px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media screen and (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .section-head h2{font-size:23px;}
  .page-banner{padding:34px 0 32px;}
  .breadcrumb .current{max-width:200px;}
  .banner-title{font-size:24px;}
  .article-section{padding:36px 0 48px;}
  .article-card{padding:24px 20px;border-radius:16px;}
  .article-body h2{font-size:20px;margin-top:32px;}
  .article-body h3{font-size:17px;}
  .article-body{font-size:15.5px;}
  .cta-section{padding:0 0 56px;}
  .cta-panel{padding:32px 22px;border-radius:16px;}
  .cta-actions{min-width:100%;}
  .cta-actions .btn-row{flex-direction:column;}
  .cta-actions .btn-row .btn{width:100%;}
  .related-section{padding:0 0 56px;}
  .faq-section{padding:0 0 64px;}
  .faq-q{padding:14px 18px;font-size:15px;}
  .faq-a-inner{padding:0 18px 18px;font-size:14.5px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media screen and (max-width:519px){
  .banner-title{font-size:22px;line-height:1.35;}
  .article-card{padding:20px 16px;}
  .article-body h2{padding-left:13px;font-size:19px;}
  .article-body table{font-size:13px;}
  .article-body th,.article-body td{padding:10px 12px;}
}

/* roulang page: category3 */
:root{
  --brand-500:#12A085;
  --brand-700:#0E6B5A;
  --brand-900:#0B3B33;
  --accent-500:#F2A03D;
  --accent-600:#DE8B22;
  --accent-100:#FDF0DC;
  --ink-900:#14201E;
  --ink-600:#4A5A57;
  --ink-300:#8B9995;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E2E5E1;
  --dark:#0B3B33;
  --ok:#1B8A5A;
  --warn:#B4531F;
  --err:#C0392B;
  --r-card:16px;
  --r-btn:12px;
  --r-img:12px;
  --r-lg:20px;
  --shadow-1:0 1px 2px rgba(20,32,30,.06);
  --shadow-2:0 12px 28px rgba(20,32,30,.10);
  --mono:"Roboto Mono","SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-600);
  background:var(--bg);
  overflow-x:hidden;
}
h1,h2,h3,h4{color:var(--ink-900);margin:0 0 16px;font-weight:700;letter-spacing:.2px;}
h1{font-size:clamp(28px,4vw,42px);line-height:1.25;}
h2{font-size:clamp(24px,3vw,32px);line-height:1.3;}
h3{font-size:20px;font-weight:600;line-height:1.45;}
h4{font-size:16px;font-weight:600;}
p{margin:0 0 16px;}
ul,ol{margin:0 0 16px;padding-left:22px;}
li{margin-bottom:8px;}
a{color:var(--brand-700);text-decoration:none;text-underline-offset:3px;transition:color .25s ease;}
a:hover{color:var(--accent-500);}
img{max-width:100%;display:block;height:auto;}
button{font-family:inherit;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--dark{background:var(--dark);color:rgba(247,246,242,.88);}
.section--dark h2,.section--dark h3,.section--dark h4{color:#F7F6F2;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head p{margin-bottom:0;color:var(--ink-600);}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-700);background:rgba(18,160,133,.10);border-radius:999px;padding:6px 14px;margin-bottom:18px;letter-spacing:.5px;}
.divider{height:1px;background:var(--line);border:0;margin:0;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,246,242,.96);
  border-bottom:1px solid transparent;
  transition:background .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.site-header.is-scrolled{background:#FFFFFF;border-bottom-color:var(--line);box-shadow:var(--shadow-1);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:72px;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink-900);font-weight:700;font-size:19px;letter-spacing:.5px;}
.brand:hover{color:var(--brand-700);}
.brand-mark{
  width:28px;height:28px;border-radius:9px;display:inline-block;
  background:linear-gradient(135deg,var(--brand-500),var(--brand-700));
  position:relative;flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;left:8px;top:8px;width:12px;height:12px;
  background:var(--accent-500);clip-path:polygon(0 0,100% 0,100% 70%,70% 100%,0 100%);
}
nav.nav-left,nav.nav-right{display:flex;align-items:center;gap:6px;}
nav.nav-left{flex:1 1 0;justify-content:flex-start;}
nav.nav-right{flex:1 1 0;justify-content:flex-end;}
.nav-link{
  position:relative;display:inline-block;padding:10px 12px;
  font-size:15px;font-weight:500;color:var(--ink-600);border-radius:8px;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--brand-500);transform:scaleX(0);transform-origin:left;transition:transform .28s ease;
}
.nav-link:hover{color:var(--ink-900);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-700);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-cta{margin-left:10px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border:0;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;cursor:pointer;text-align:center;
  transition:transform .2s ease,background .25s ease,box-shadow .25s ease,color .25s ease;
}
.btn-primary{background:var(--accent-500);color:var(--ink-900);box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--accent-600);color:var(--ink-900);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);background:#cf8018;}
.btn-ghost{background:transparent;color:var(--brand-700);box-shadow:inset 0 0 0 1.5px var(--brand-500);}
.btn-ghost:hover{background:rgba(18,160,133,.08);color:var(--brand-700);transform:translateY(-2px);}
.btn-light{background:rgba(247,246,242,.12);color:#F7F6F2;box-shadow:inset 0 0 0 1.5px rgba(247,246,242,.45);}
.btn-light:hover{background:rgba(247,246,242,.2);color:#fff;transform:translateY(-2px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-lg{height:56px;padding:0 30px;font-size:17px;}
.btn-block{width:100%;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand-700);
  position:relative;padding-bottom:2px;
}
.text-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand-500);transition:width .3s ease;}
.text-link:hover::after{width:100%;}

/* ---------- mobile nav ---------- */
.mobile-only{display:none;}
.menu-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--ink-900);font-size:18px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
}
.mobile-drawer{
  position:fixed;inset:0 0 auto 0;top:0;z-index:80;background:#fff;
  padding:20px 24px 28px;box-shadow:var(--shadow-2);
  transform:translateY(-110%);transition:transform .32s ease;
  max-height:100vh;overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateY(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{background:none;border:0;font-size:22px;color:var(--ink-600);cursor:pointer;padding:6px 10px;}
.drawer-links{display:flex;flex-direction:column;gap:4px;margin-bottom:22px;}
.drawer-links a{padding:14px 12px;border-radius:10px;font-size:16px;color:var(--ink-900);font-weight:500;}
.drawer-links a:hover{background:var(--bg);}
.drawer-links a.is-active{color:var(--brand-700);background:rgba(18,160,133,.09);}

/* ---------- hero ---------- */
.page-hero{
  position:relative;background-color:var(--dark);background-size:cover;background-position:center;
  color:rgba(247,246,242,.9);padding:96px 0 84px;overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(11,59,51,.94) 0%,rgba(11,59,51,.86) 46%,rgba(14,107,90,.72) 100%);
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-90px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(242,160,61,.22),transparent 68%);
}
.page-hero .container{position:relative;z-index:2;}
.page-hero h1{color:#FFFFFF;max-width:820px;margin-bottom:18px;}
.page-hero .hero-sub{font-size:18px;color:rgba(247,246,242,.85);max-width:640px;margin-bottom:34px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(247,246,242,.66);margin-bottom:22px;}
.breadcrumb a{color:rgba(247,246,242,.8);}
.breadcrumb a:hover{color:var(--accent-500);}
.breadcrumb span.sep{opacity:.6;}
.hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;max-width:760px;}
.stat-card{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  border-radius:14px;padding:18px 20px;backdrop-filter:none;
}
.stat-card .stat-label{font-size:13px;color:rgba(247,246,242,.7);display:block;margin-bottom:6px;}
.stat-card .stat-value{font-size:22px;font-weight:700;color:#FFFFFF;display:block;line-height:1.3;}
.stat-card .stat-value.mono{font-size:20px;}

/* ---------- filter ---------- */
.filter-bar{
  display:flex;flex-wrap:wrap;gap:10px;padding:10px;background:#fff;
  border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-1);margin-bottom:12px;
}
.filter-pill{
  border:1px solid transparent;background:var(--bg);color:var(--ink-600);
  height:40px;padding:0 18px;border-radius:10px;font-size:15px;font-weight:500;cursor:pointer;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease;
}
.filter-pill:hover{background:rgba(18,160,133,.09);color:var(--brand-700);}
.filter-pill.is-active{background:var(--brand-500);color:#fff;font-weight:600;box-shadow:0 6px 14px rgba(18,160,133,.24);}
.filter-hint{font-size:14px;color:var(--ink-300);margin-bottom:28px;}

/* ---------- log list ---------- */
.log-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line);}
.log-item{
  padding:30px 0 28px;border-bottom:1px solid var(--line);
  display:grid;grid-template-columns:240px minmax(0,1fr);gap:12px 40px;
  transition:background .25s ease;
}
.log-item:hover{background:rgba(18,160,133,.035);}
.log-item.is-hidden{display:none;}
.log-head{display:flex;flex-direction:column;gap:10px;}
.version{font-size:20px;font-weight:700;color:var(--ink-900);}
.log-date{font-size:14px;color:var(--ink-300);}
.log-body h3{margin-bottom:12px;}
.log-changes{list-style:none;margin:0;padding:0;}
.log-changes li{position:relative;padding-left:22px;margin-bottom:8px;font-size:15.5px;color:var(--ink-600);}
.log-changes li::before{
  content:"";position:absolute;left:4px;top:12px;width:7px;height:7px;border-radius:2px;
  background:var(--brand-500);transform:rotate(45deg);
}
.tag{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  font-size:13px;font-weight:600;border-radius:999px;padding:4px 12px;line-height:1.6;
}
.tag-new{background:rgba(18,160,133,.14);color:var(--brand-700);}
.tag-fix{background:var(--accent-100);color:#9A5B0E;}
.tag-opt{background:rgba(74,90,87,.12);color:var(--ink-600);}
.tag-sec{background:rgba(192,57,43,.12);color:var(--err);}

/* ---------- update modes ---------- */
.mode-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch;}
.mode-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--shadow-1);transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.mode-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(18,160,133,.3);}
.mode-card--feature{padding:0;overflow:hidden;display:flex;flex-direction:column;}
.mode-card--feature .mode-img{aspect-ratio:16/9;overflow:hidden;background:var(--bg);border-bottom:1px solid var(--line);}
.mode-card--feature .mode-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.mode-card--feature:hover .mode-img img{transform:scale(1.03);}
.mode-card--feature .mode-body{padding:28px;}
.mode-stack{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.mode-icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(18,160,133,.1);color:var(--brand-700);font-size:18px;margin-bottom:16px;
}
.feature-list{list-style:none;margin:0;padding:0;}
.feature-list li{display:flex;gap:10px;align-items:flex-start;margin-bottom:10px;font-size:15.5px;}
.feature-list i{color:var(--brand-500);margin-top:6px;font-size:12px;}

/* ---------- version rules ---------- */
.rule-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-top:8px;}
.rule-block{
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;
  border-top:3px solid var(--brand-500);transition:transform .3s ease,box-shadow .3s ease;
}
.rule-block:nth-child(2){border-top-color:var(--accent-500);}
.rule-block:nth-child(3){border-top-color:var(--ok);}
.rule-block:nth-child(4){border-top-color:var(--ink-300);}
.rule-block:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.rule-block .rule-code{font-family:var(--mono);font-size:22px;font-weight:700;color:var(--ink-900);display:block;margin-bottom:10px;}
.rule-block p{font-size:14.5px;margin:0;color:var(--ink-600);}
.note-row{
  margin-top:24px;display:flex;gap:14px;align-items:flex-start;
  background:var(--accent-100);border-radius:14px;padding:18px 22px;font-size:15px;color:#7A4A0C;
}
.note-row i{margin-top:5px;color:var(--accent-600);}

/* ---------- dark cta ---------- */
.cta-panel{
  background:var(--dark);border-radius:var(--r-lg);padding:48px 44px;color:rgba(247,246,242,.86);
  display:grid;grid-template-columns:1.25fr .75fr;gap:40px;align-items:center;
  box-shadow:0 16px 32px rgba(0,0,0,.22);position:relative;overflow:hidden;
}
.cta-panel::after{
  content:"";position:absolute;right:-60px;bottom:-70px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(242,160,61,.2),transparent 70%);
}
.cta-panel h2{color:#FFFFFF;margin-bottom:14px;}
.cta-panel p{color:rgba(247,246,242,.8);max-width:600px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;position:relative;z-index:2;}
.cta-meta{margin-top:18px;font-size:13px;color:rgba(247,246,242,.62);display:flex;flex-wrap:wrap;gap:18px;}
.cta-side{position:relative;z-index:2;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:16px;padding:24px;}
.cta-side .cta-side-title{font-size:14px;color:rgba(247,246,242,.7);margin-bottom:14px;display:block;}
.cta-side ul{list-style:none;margin:0;padding:0;}
.cta-side li{display:flex;justify-content:space-between;gap:12px;font-size:14px;padding:10px 0;border-bottom:1px dashed rgba(255,255,255,.16);}
.cta-side li:last-child{border-bottom:0;}
.cta-side li span:last-child{color:#FFFFFF;font-weight:600;}

/* ---------- faq ---------- */
.faq-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-1);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 26px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;color:var(--ink-900);transition:background .25s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:var(--bg);}
.faq-item summary .faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:rgba(18,160,133,.1);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;font-size:12px;transition:transform .3s ease,background .3s ease;
}
.faq-item[open] summary .faq-icon{transform:rotate(180deg);background:var(--brand-500);color:#fff;}
.faq-item .faq-answer{padding:0 26px 22px;font-size:15px;line-height:1.8;color:var(--ink-600);}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:rgba(247,246,242,.75);padding:72px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#F7F6F2;font-size:19px;font-weight:700;margin-bottom:16px;}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(247,246,242,.68);max-width:320px;}
.site-footer h4{color:rgba(18,160,133,.95);font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-links{list-style:none;margin:0;padding:0;}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:rgba(247,246,242,.78);font-size:14px;}
.footer-links a:hover{color:var(--accent-500);}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(247,246,242,.14);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:rgba(247,246,242,.6);
}
.to-top{
  display:inline-flex;align-items:center;gap:8px;color:rgba(247,246,242,.78);
  border:1px solid rgba(247,246,242,.24);border-radius:10px;padding:8px 14px;font-size:13px;
}
.to-top:hover{color:var(--ink-900);background:var(--accent-500);border-color:var(--accent-500);}

/* ---------- responsive ---------- */
@media screen and (max-width:1023px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .section--tight{padding:60px 0;}
  nav.nav-left,nav.nav-right{display:none;}
  .mobile-only{display:flex;}
  .header-inner{justify-content:space-between;}
  .mode-grid{grid-template-columns:1fr;}
  .mode-stack{grid-template-rows:auto auto;}
  .rule-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-panel{grid-template-columns:1fr;padding:40px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .log-item{grid-template-columns:1fr;gap:16px;}
  .log-head{flex-direction:row;align-items:center;gap:16px;flex-wrap:wrap;}
  .version{font-size:18px;}
}
@media screen and (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .section--tight{padding:48px 0;}
  .page-hero{padding:64px 0 56px;}
  .hero-stats{grid-template-columns:1fr;gap:12px;}
  .page-hero .hero-sub{font-size:16.5px;margin-bottom:26px;}
  .rule-grid{grid-template-columns:1fr;}
  .faq-item summary{padding:18px 20px;font-size:15.5px;}
  .faq-item .faq-answer{padding:0 20px 20px;}
  .cta-panel{padding:32px 22px;border-radius:16px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .filter-bar{border-radius:12px;padding:8px;}
  .filter-pill{height:36px;padding:0 14px;font-size:14px;}
}

/* roulang page: category2 */
:root{
  --brand-500:#12A085;
  --brand-700:#0E6B5A;
  --brand-900:#0B3B33;
  --accent-500:#F2A03D;
  --accent-600:#E89327;
  --accent-100:#FDF0DC;
  --ink-900:#14201E;
  --ink-600:#4A5A57;
  --ink-300:#8B9995;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E2E5E1;
  --dark:#0B3B33;
  --success:#1B8A5A;
  --warn:#B4531F;
  --r-card:16px;
  --r-btn:12px;
  --shadow-1:0 1px 2px rgba(20,32,30,.06);
  --shadow-2:0 12px 28px rgba(20,32,30,.10);
  --mono:"Roboto Mono",SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-600);
  background:var(--bg);
}
h1,h2,h3,h4{color:var(--ink-900);margin:0 0 16px;line-height:1.3;font-weight:700}
h1{font-size:clamp(28px,4vw,42px);line-height:1.25}
h2{font-size:clamp(24px,3vw,32px)}
h3{font-size:20px;font-weight:600}
p{margin:0 0 16px}
a{color:var(--brand-700);text-decoration:none;text-underline-offset:3px;transition:color .2s ease}
a:hover{color:var(--accent-500)}
img{max-width:100%;display:block;border-radius:12px}
ul,ol{margin:0 0 16px;padding-left:20px}
li{margin-bottom:8px}
button{font-family:inherit;font-size:inherit}
.mono{font-family:var(--mono);letter-spacing:-.01em}
.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%}
.section{padding:88px 0}
.section-alt{background:var(--surface)}
.section-head{max-width:760px;margin-bottom:40px}
.section-sub{font-size:16px;color:var(--ink-600);margin:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-700);
  background:rgba(18,160,133,.1);
  border:1px solid rgba(18,160,133,.22);
  border-radius:999px;padding:5px 14px;margin-bottom:16px;
}
.eyebrow i{font-size:12px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;border:1.5px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:background-color .25s ease,transform .25s ease,box-shadow .25s ease,border-color .25s ease,color .25s ease;
}
.btn-primary{background:var(--accent-500);color:var(--ink-900)}
.btn-primary:hover{background:var(--accent-600);color:var(--ink-900);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0);background:#D9861C}
.btn-secondary{background:transparent;border-color:var(--brand-500);color:var(--brand-700)}
.btn-secondary:hover{background:rgba(18,160,133,.08);color:var(--brand-700);transform:translateY(-2px)}
.btn-secondary:active{transform:translateY(0)}
.btn-lg{height:56px;padding:0 32px;font-size:17px}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--bg);
  border-bottom:1px solid transparent;
  transition:background-color .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:var(--shadow-1)}
.header-inner{display:flex;align-items:center;gap:16px;height:72px}
.nav-left,.nav-right{display:flex;align-items:center;gap:2px;flex:1 1 0;min-width:0}
.nav-right{justify-content:flex-end}
.nav-link{
  position:relative;padding:8px 12px;font-size:15px;font-weight:500;
  color:var(--ink-600);border-radius:8px;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand-500);transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.nav-link:hover{color:var(--brand-700)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand-700)}
.nav-link.is-active::after{transform:scaleX(1)}
.brand{
  display:flex;align-items:center;gap:10px;
  font-size:20px;font-weight:700;color:var(--ink-900);white-space:nowrap;
}
.brand:hover{color:var(--ink-900)}
.brand-mark{
  width:30px;height:30px;border-radius:9px;background:var(--brand-500);
  position:relative;display:inline-block;flex:0 0 30px;
}
.brand-mark::after{
  content:"";position:absolute;inset:9px;border-radius:3px;background:#fff;transform:rotate(45deg);
}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 18px;margin-left:12px;border-radius:var(--r-btn);
  background:var(--accent-500);color:var(--ink-900);font-weight:600;font-size:14px;
  transition:background-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.nav-cta:hover{background:var(--accent-600);color:var(--ink-900);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink-900);cursor:pointer;
}
.drawer{
  position:fixed;left:0;right:0;top:72px;bottom:0;z-index:55;
  background:#fff;padding:20px;overflow-y:auto;
  transform:translateY(-8px);opacity:0;visibility:hidden;
  transition:transform .25s ease,opacity .25s ease,visibility .25s ease;
}
.drawer.is-open{transform:none;opacity:1;visibility:visible}
.drawer-link{
  display:block;padding:14px 4px;font-size:16px;font-weight:600;
  color:var(--ink-900);border-bottom:1px solid var(--line);
}
.drawer-link.is-active{color:var(--brand-700)}
.drawer .btn{margin-top:24px}

/* ---------- hero ---------- */
.page-hero{
  position:relative;padding:64px 0 88px;overflow:hidden;
  background-image:linear-gradient(180deg,rgba(247,246,242,.94) 0%,rgba(247,246,242,.82) 55%,rgba(247,246,242,.98) 100%),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-60px;width:420px;height:420px;
  background:rgba(18,160,133,.08);transform:rotate(28deg);border-radius:60px;pointer-events:none;
}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:14px;color:var(--ink-300);margin-bottom:28px;position:relative;z-index:2;
}
.breadcrumb a{color:var(--ink-600)}
.breadcrumb a:hover{color:var(--brand-700)}
.breadcrumb .cur{color:var(--brand-700);font-weight:600}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
}
.hero-sub{font-size:18px;color:var(--ink-600);max-width:520px;margin-bottom:28px}
.badge-row{display:flex;flex-wrap:wrap;gap:8px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;background:#fff;
  border:1px solid var(--line);font-size:13px;color:var(--ink-600);
}
.badge i{font-size:12px;color:var(--brand-700)}
.badge-brand{background:rgba(18,160,133,.1);border-color:rgba(18,160,133,.24);color:var(--brand-700);font-weight:600}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-2);
  transform:rotate(-1.5deg);background:var(--bg);
}
.float-card{
  position:absolute;left:-24px;bottom:-28px;
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:16px 20px;box-shadow:var(--shadow-2);
  display:flex;flex-direction:column;gap:2px;min-width:220px;
}
.float-card .fc-label{font-size:13px;color:var(--ink-300)}
.float-card strong{font-size:17px;color:var(--brand-700)}
.float-card .fc-sub{font-size:12px;color:var(--ink-300)}

/* ---------- cards ---------- */
.card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:24px;
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.card:hover{transform:translateY(-4px);border-color:rgba(18,160,133,.3);box-shadow:var(--shadow-2)}
.card h3{margin-bottom:8px}
.card p:last-child{margin-bottom:0}

/* ---------- package grid ---------- */
.pack-grid{margin-top:8px}
.pack-cell{padding:10px}
.pack-card{height:100%;display:flex;flex-direction:column}
.pack-head{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.pack-icon{
  width:48px;height:48px;flex:0 0 48px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(18,160,133,.1);color:var(--brand-700);font-size:22px;
}
.pack-head h3{margin:0 0 2px;font-size:19px}
.pack-meta{font-size:13px;color:var(--ink-300)}
.pack-card p{font-size:15px;margin-bottom:16px}
.tick-list{list-style:none;padding:0;margin:0 0 20px}
.tick-list li{position:relative;padding-left:24px;font-size:14px;line-height:1.7;margin-bottom:8px}
.tick-list li::before{
  content:"";position:absolute;left:2px;top:9px;width:8px;height:8px;
  border-radius:2px;background:var(--brand-500);transform:rotate(45deg);
}
.pack-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:auto}
.pack-note{
  font-size:13px;color:var(--ink-300);margin-top:14px;padding-top:14px;
  border-top:1px dashed var(--line);
}

/* ---------- method ---------- */
.method-grid{margin-top:8px}
.method-main{height:100%;display:flex;flex-direction:column;padding:0;overflow:hidden}
.method-main img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;border-bottom:1px solid var(--line)}
.method-main .method-body{padding:28px}
.method-side{display:grid;gap:20px;height:100%}
.method-side .card{display:flex;flex-direction:column}
.method-side .card p{font-size:14px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.tag{
  display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;
  font-size:12px;font-weight:600;background:var(--accent-100);color:#8A5411;
}
.tag-green{background:rgba(18,160,133,.12);color:var(--brand-700)}
.code-inline{
  display:inline-block;font-family:var(--mono);font-size:13px;
  background:#F1F3F2;border:1px solid var(--line);border-radius:8px;
  padding:2px 8px;color:var(--ink-900);word-break:break-all;
}

/* ---------- timeline ---------- */
.timeline{position:relative;margin-top:24px}
.timeline::before{
  content:"";position:absolute;left:15px;top:16px;bottom:16px;width:2px;background:var(--line);
}
.tl-item{position:relative;padding:0 0 40px 64px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:0;top:0;width:32px;height:32px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:14px;font-weight:700;
  background:#fff;border:2px solid var(--brand-500);color:var(--brand-700);
  z-index:2;
}
.tl-item.is-current .tl-dot{background:var(--brand-500);color:#fff}
.tl-body{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;display:grid;grid-template-columns:1fr 260px;gap:24px;align-items:start;
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.tl-body:hover{transform:translateY(-4px);border-color:rgba(18,160,133,.3);box-shadow:var(--shadow-2)}
.tl-body h3{margin-bottom:10px;font-size:19px}
.tl-body p{font-size:15px;margin-bottom:12px}
.tl-body img{width:100%;aspect-ratio:16/9;object-fit:cover;border:1px solid var(--line)}

/* ---------- check ---------- */
.check-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.check-copy p{font-size:16px}
.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.stat{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  padding:20px;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.stat:hover{transform:translateY(-4px);border-color:rgba(18,160,133,.3);box-shadow:var(--shadow-2)}
.stat .stat-label{font-size:13px;color:var(--ink-300);display:block;margin-bottom:6px}
.stat .stat-value{font-family:var(--mono);font-size:17px;font-weight:700;color:var(--ink-900);display:block;line-height:1.5}
.stat .stat-hint{font-size:12px;color:var(--ink-300);display:block;margin-top:6px}
.code-block{
  margin-top:8px;background:#0F2723;border-radius:14px;padding:18px 20px;
  border:1px solid rgba(255,255,255,.06);
}
.code-block .code-label{display:block;font-size:12px;color:rgba(247,246,242,.6);margin-bottom:8px}
.code-block code{font-family:var(--mono);font-size:13.5px;color:#8FE3CD;word-break:break-all;line-height:1.7}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;margin-top:8px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.faq-item.is-open{border-color:rgba(18,160,133,.35);box-shadow:var(--shadow-1)}
.faq-q{
  width:100%;min-height:56px;display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:14px 24px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.6;
}
.faq-q:hover{color:var(--brand-700)}
.faq-icon{
  flex:0 0 28px;width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(18,160,133,.1);color:var(--brand-700);font-size:13px;
  transition:transform .3s ease,background-color .3s ease,color .3s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--brand-500);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-inner{padding:0 24px 20px;font-size:15px;line-height:1.8;color:var(--ink-600)}
.faq-a-inner p:last-child{margin-bottom:0}

/* ---------- dark cta ---------- */
.cta-wrap{padding:0 0 88px}
.cta-dark{
  position:relative;overflow:hidden;border-radius:20px;background:var(--dark);
  padding:64px 56px;color:rgba(247,246,242,.9);
  background-image:linear-gradient(90deg,rgba(11,59,51,.96) 0%,rgba(11,59,51,.86) 60%,rgba(11,59,51,.72) 100%),
    url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
}
.cta-dark h2{color:#fff;margin-bottom:12px}
.cta-dark p{color:rgba(247,246,242,.82);max-width:560px;font-size:16px}
.cta-dark .btn-row{margin-top:28px;margin-bottom:16px}
.cta-meta{font-size:13px;color:rgba(247,246,242,.65);font-family:var(--mono)}
.cta-dark .btn-secondary{border-color:rgba(247,246,242,.5);color:#F7F6F2}
.cta-dark .btn-secondary:hover{background:rgba(247,246,242,.12);color:#fff}

/* ---------- sticky download bar ---------- */
.dl-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -8px 24px rgba(20,32,30,.08);
  transition:transform .3s ease,opacity .3s ease;
}
.dl-bar.is-hidden{transform:translateY(110%);opacity:0;pointer-events:none}
.dl-bar-inner{display:flex;align-items:center;gap:20px;padding:12px 0}
.dl-bar-text{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;min-width:0}
.dl-bar-text strong{font-size:15px;color:var(--ink-900)}
.dl-bar-text .mono{font-size:13px;color:var(--ink-300)}
.dl-bar-actions{display:flex;gap:10px;margin-left:auto}
.dl-bar-close{
  flex:0 0 36px;width:36px;height:36px;border-radius:50%;
  border:1px solid var(--line);background:#fff;color:var(--ink-300);
  cursor:pointer;font-size:16px;line-height:1;display:flex;align-items:center;justify-content:center;
  transition:color .2s ease,border-color .2s ease;
}
.dl-bar-close:hover{color:var(--ink-900);border-color:var(--ink-300)}
body.has-dlbar{padding-bottom:96px}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:rgba(247,246,242,.9);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--brand-500)}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(247,246,242,.66);max-width:320px;margin:0}
.site-footer h4{font-size:15px;font-weight:600;color:#9FE0CF;margin-bottom:16px}
.footer-links{list-style:none;padding:0;margin:0}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:rgba(247,246,242,.78)}
.footer-links a:hover{color:var(--accent-500)}
.footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid rgba(247,246,242,.14);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(247,246,242,.6);
}
.to-top{color:rgba(247,246,242,.78);font-size:13px;display:inline-flex;align-items:center;gap:6px}
.to-top:hover{color:var(--accent-500)}

/* ---------- foundation fallback grid ---------- */
.grid-x{display:flex;flex-wrap:wrap}
.cell{flex:0 0 auto;width:100%;min-width:0}
@media (min-width:640px){
  .medium-6{width:50%}
}
@media (min-width:1024px){
  .large-4{width:33.3333%}
  .large-5{width:41.6667%}
  .large-6{width:50%}
  .large-7{width:58.3333%}
  .large-8{width:66.6667%}
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-left,.nav-right{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .header-inner{justify-content:space-between}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media{order:2}
  .hero-media img{transform:none}
  .float-card{position:static;margin-top:20px;min-width:0;transform:none}
  .tl-body{grid-template-columns:1fr}
  .check-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:72px 0}
  .page-hero{padding:48px 0 72px}
  .cta-dark{padding:48px 36px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .page-hero{padding:36px 0 56px}
  .hero-sub{font-size:16px}
  .btn-row{gap:10px}
  .btn-row .btn{width:100%}
  .btn-lg{height:52px;font-size:16px}
  .stat-grid{grid-template-columns:1fr}
  .timeline::before{left:13px}
  .tl-item{padding-left:52px}
  .tl-dot{width:28px;height:28px;font-size:13px}
  .faq-q{padding:14px 18px;font-size:15px}
  .faq-a-inner{padding:0 18px 18px}
  .cta-wrap{padding:0 0 56px}
  .cta-dark{padding:36px 24px;border-radius:16px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .dl-bar-inner{flex-wrap:wrap;gap:10px;padding:10px 0}
  .dl-bar-actions{width:100%;margin-left:0}
  .dl-bar-actions .btn{flex:1 1 auto}
  .dl-bar-close{position:absolute;right:12px;top:8px}
  .dl-bar-inner{position:relative;padding-right:44px}
  body.has-dlbar{padding-bottom:140px}
}
@media (max-width:520px){
  .pack-actions .btn{width:100%}
  .badge{font-size:12px}
}

/* roulang page: category4 */
:root{
  --brand-500:#12A085;
  --brand-700:#0E6B5A;
  --brand-900:#0B3B33;
  --accent-500:#F2A03D;
  --accent-100:#FDF0DC;
  --ink-900:#14201E;
  --ink-600:#4A5A57;
  --ink-300:#8B9995;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E2E5E1;
  --dark:#0B3B33;
  --ok:#1B8A5A;
  --warn:#B4531F;
  --err:#C0392B;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-lg:20px;
  --shadow-1:0 1px 2px rgba(20,32,30,.06);
  --shadow-2:0 12px 28px rgba(20,32,30,.10);
  --mono:"Roboto Mono",SFMono-Regular,Consolas,"Courier New",monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-600);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:.2px;}
p{margin:0 0 16px;}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--accent-500);}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea,select{font-family:inherit;font-size:15px;color:var(--ink-900);}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}

.container{
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{max-width:720px;margin-bottom:32px;}
.section-head h2{font-size:clamp(24px,3vw,32px);line-height:1.3;}
.section-head p{margin:12px 0 0;font-size:15px;color:var(--ink-600);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-700);
  background:rgba(18,160,133,.10);
  border:1px solid rgba(18,160,133,.22);
  border-radius:999px;padding:4px 12px;margin-bottom:16px;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,246,242,.96);
  border-bottom:1px solid transparent;
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  background:#fff;
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-1);
}
.nav-grid{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:72px;
  gap:16px;
  flex-wrap:nowrap;
}
.nav-grid > .cell{flex:0 1 auto;padding-left:0;padding-right:0;min-width:0;}
.nav-left,.nav-right{display:flex;align-items:center;gap:26px;}
.nav-left{flex:1 1 auto;justify-content:flex-start;}
.nav-right{flex:1 1 auto;justify-content:flex-end;}
.brand-logo{
  display:inline-flex;align-items:center;gap:10px;
  font-size:19px;font-weight:700;color:var(--ink-900);
  flex:0 0 auto;
}
.brand-logo:hover{color:var(--brand-700);}
.brand-mark{
  width:22px;height:22px;border-radius:7px;
  background:var(--brand-500);position:relative;display:inline-block;flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;left:6px;top:6px;width:10px;height:10px;
  border-radius:3px;background:var(--accent-500);
}
.nav-link{
  position:relative;
  font-size:15px;color:var(--ink-600);
  padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;
  background:var(--brand-500);transition:width .25s ease;
}
.nav-link:hover{color:var(--brand-700);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--brand-700);font-weight:600;}
.nav-link.is-active::after{width:100%;}
.nav-cta{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--accent-500);color:var(--ink-900);
  font-size:14px;font-weight:600;
  padding:9px 16px;border-radius:10px;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,background .2s ease,box-shadow .2s ease;
}
.nav-cta:hover{background:#e5912c;color:var(--ink-900);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.nav-cta:active{transform:translateY(0);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--ink-900);
  font-size:18px;align-items:center;justify-content:center;
}
.mobile-drawer{
  display:none;
  position:fixed;inset:72px 0 0 0;z-index:55;
  background:#fff;padding:20px 20px 96px;overflow-y:auto;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer a{
  display:block;padding:14px 4px;font-size:16px;color:var(--ink-900);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a.is-active{color:var(--brand-700);font-weight:600;}
.mobile-drawer .drawer-cta{
  margin-top:20px;display:block;text-align:center;
  background:var(--accent-500);color:var(--ink-900);
  border-radius:12px;font-weight:600;border-bottom:0;padding:14px;
}

/* ---------- breadcrumb ---------- */
.crumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--ink-300);margin-bottom:20px;}
.crumb a{color:var(--ink-600);}
.crumb span.sep{color:var(--ink-300);}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:64px 0 84px;
  background:
    linear-gradient(180deg,rgba(247,246,242,.2),rgba(247,246,242,.9) 78%),
    url("/assets/images/backpic/back-2.png") center/cover no-repeat;
}
.hero::before{
  content:"";position:absolute;top:-120px;right:-140px;width:520px;height:520px;
  background:rgba(18,160,133,.07);
  transform:rotate(24deg);border-radius:48px;pointer-events:none;
}
.hero .container{position:relative;z-index:1;}
.hero h1{font-size:clamp(28px,4vw,42px);line-height:1.25;margin-bottom:14px;}
.hero-sub{font-size:18px;color:var(--ink-600);max-width:520px;margin-bottom:26px;}
.search-box{
  display:flex;align-items:center;gap:12px;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:8px 10px 8px 16px;max-width:560px;
  box-shadow:var(--shadow-1);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(18,160,133,.14);}
.search-box i{color:var(--ink-300);}
.search-box input{
  flex:1 1 auto;border:0;background:transparent;height:40px;font-size:15px;
}
.search-box input:focus{outline:none;}
.search-box .search-btn{
  background:var(--brand-500);color:#fff;font-size:14px;font-weight:600;
  padding:10px 18px;border-radius:10px;white-space:nowrap;
  transition:background .2s ease;
}
.search-box .search-btn:hover{background:var(--brand-700);}
.hot-tags{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:16px;font-size:13px;color:var(--ink-300);}
.hot-tags button{
  font-size:13px;color:var(--ink-600);
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:4px 12px;
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.hot-tags button:hover{border-color:var(--brand-500);color:var(--brand-700);background:rgba(18,160,133,.06);}
.hero-badges{display:flex;flex-wrap:wrap;gap:20px;margin-top:28px;}
.hero-badge{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-600);}
.hero-badge i{color:var(--brand-500);}
.hero-media{position:relative;}
.hero-shot{
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  background:var(--bg);box-shadow:var(--shadow-2);
  transform:rotate(-1.2deg);
}
.hero-shot img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.hero-float{
  position:absolute;right:-8px;bottom:-26px;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:14px 18px;box-shadow:var(--shadow-2);
  display:flex;flex-direction:column;gap:2px;min-width:180px;
}
.hero-float .num{font-family:var(--mono);font-size:22px;color:var(--ink-900);font-weight:700;}
.hero-float .lbl{font-size:13px;color:var(--ink-300);}

/* ---------- quick entries ---------- */
.entry-card{
  position:relative;height:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px 24px;
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.entry-card:hover{transform:translateY(-4px);border-color:rgba(18,160,133,.35);box-shadow:var(--shadow-2);}
.entry-icon{
  width:44px;height:44px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--accent-100);color:var(--brand-700);font-size:18px;margin-bottom:16px;
}
.entry-card h3{font-size:18px;margin-bottom:8px;}
.entry-card p{font-size:14px;line-height:1.75;color:var(--ink-600);margin-bottom:14px;}
.entry-card .entry-link{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.entry-card:hover .entry-link{color:var(--accent-500);}

/* ---------- support layout ---------- */
.support-grid{align-items:flex-start;}
.faq-toolbar{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  margin-bottom:22px;
}
.faq-toolbar button{
  font-size:14px;color:var(--ink-600);background:#fff;
  border:1px solid var(--line);border-radius:999px;padding:7px 16px;
  transition:all .2s ease;
}
.faq-toolbar button:hover{border-color:var(--brand-500);color:var(--brand-700);}
.faq-toolbar button.is-on{background:var(--brand-700);border-color:var(--brand-700);color:#fff;}

.faq-group{margin-bottom:36px;}
.faq-group.is-hidden{display:none;}
.faq-group-title{
  display:flex;align-items:center;gap:10px;
  font-size:18px;margin-bottom:14px;
}
.faq-group-title i{color:var(--brand-500);font-size:16px;}
.faq-group-title .count{
  font-family:var(--mono);font-size:12px;color:var(--ink-300);
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:1px 8px;
}
.acc{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
}
.acc-item + .acc-item{border-top:1px solid var(--line);}
.acc-item.is-hidden{display:none;}
.acc-head{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  text-align:left;padding:17px 22px;
  font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.6;
  transition:background .2s ease,color .2s ease;
}
.acc-head:hover{background:rgba(18,160,133,.04);}
.acc-head .acc-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--bg);border:1px solid var(--line);
  font-size:12px;color:var(--brand-700);
  transition:transform .3s ease,background .2s ease;
}
.acc-item.is-open .acc-head{color:var(--brand-700);}
.acc-item.is-open .acc-icon{transform:rotate(180deg);background:rgba(18,160,133,.12);}
.acc-body{max-height:0;overflow:hidden;transition:max-height .32s ease;}
.acc-inner{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--ink-600);}
.acc-inner ol{margin:10px 0 0;padding-left:20px;list-style:decimal;}
.acc-inner li{margin-bottom:6px;}
.acc-inner .note{
  margin-top:12px;font-size:13px;color:var(--warn);
  background:#FDF6EC;border-left:3px solid var(--accent-500);
  border-radius:0 8px 8px 0;padding:8px 12px;
}
.search-empty{
  display:none;background:#fff;border:1px dashed var(--line);
  border-radius:var(--radius-card);padding:36px 24px;text-align:center;color:var(--ink-300);
}
.search-empty.is-on{display:block;}
.search-empty i{font-size:28px;color:var(--ink-300);margin-bottom:12px;}
.search-empty p{margin:0 0 6px;color:var(--ink-600);font-size:15px;}

/* ---------- side panel ---------- */
.side-panel{position:sticky;top:96px;}
.contact-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);margin-bottom:22px;
}
.contact-card h3{font-size:18px;margin-bottom:8px;}
.contact-card p{font-size:14px;line-height:1.78;color:var(--ink-600);}
.contact-meta{display:flex;flex-direction:column;gap:10px;margin:16px 0 18px;}
.contact-meta div{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink-600);}
.contact-meta i{color:var(--brand-500);width:16px;text-align:center;}
.contact-meta .mono{font-size:13px;color:var(--ink-900);}
.side-list{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 24px;
}
.side-list h4{font-size:15px;margin-bottom:12px;}
.side-list li{border-top:1px solid var(--line);}
.side-list li:first-child{border-top:0;}
.side-list a{display:flex;gap:10px;align-items:flex-start;padding:11px 0;font-size:14px;color:var(--ink-600);}
.side-list a:hover{color:var(--brand-700);}
.side-list i{margin-top:5px;font-size:11px;color:var(--ink-300);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;line-height:1;
  transition:transform .2s ease,background .2s ease,box-shadow .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--accent-500);color:var(--ink-900);box-shadow:var(--shadow-1);}
.btn-primary:hover{background:#e5912c;color:var(--ink-900);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);background:#d9871f;}
.btn-ghost{background:transparent;border:1.5px solid var(--brand-500);color:var(--brand-700);}
.btn-ghost:hover{background:rgba(18,160,133,.08);color:var(--brand-700);}
.btn-light{background:#fff;color:var(--ink-900);border:1px solid var(--line);}
.btn-light:hover{border-color:var(--brand-500);color:var(--brand-700);transform:translateY(-2px);}
.btn-lg{height:56px;padding:0 32px;font-size:17px;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.55;cursor:not-allowed;transform:none;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--brand-700);position:relative;
}
.text-link::after{
  content:"";position:absolute;left:0;bottom:-3px;height:2px;width:0;background:var(--brand-500);
  transition:width .25s ease;
}
.text-link:hover::after{width:100%;}

/* ---------- steps timeline ---------- */
.timeline{position:relative;margin-top:8px;}
.timeline::before{
  content:"";position:absolute;left:15px;top:8px;bottom:8px;width:2px;background:var(--line);
}
.tl-item{position:relative;padding:0 0 32px 56px;}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute;left:0;top:2px;width:32px;height:32px;border-radius:50%;
  background:#fff;border:2px solid var(--brand-500);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:14px;font-weight:700;
}
.tl-item.is-current .tl-dot{background:var(--brand-500);color:#fff;}
.tl-item h3{font-size:18px;margin-bottom:6px;}
.tl-item p{font-size:15px;margin-bottom:10px;}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--ink-600);
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:3px 12px;
}
.tag.is-brand{color:var(--brand-700);background:rgba(18,160,133,.08);border-color:rgba(18,160,133,.25);}
.tag.is-accent{color:#8a5a0e;background:var(--accent-100);border-color:#F3D9AF;}
.tag .mono{font-size:12px;}

/* ---------- resource cards ---------- */
.res-card{
  height:100%;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:24px;
  display:flex;flex-direction:column;gap:10px;
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.res-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(18,160,133,.3);}
.res-card h3{font-size:17px;}
.res-card p{font-size:14px;line-height:1.78;margin:0;color:var(--ink-600);}
.res-list{margin-top:6px;display:flex;flex-direction:column;gap:8px;}
.res-list li{display:flex;justify-content:space-between;gap:12px;font-size:14px;color:var(--ink-600);border-bottom:1px dashed var(--line);padding-bottom:7px;}
.res-list li:last-child{border-bottom:0;padding-bottom:0;}
.res-list .val{font-family:var(--mono);font-size:13px;color:var(--ink-900);}
.res-card.is-dark{background:var(--dark);border-color:var(--dark);}
.res-card.is-dark h3{color:#fff;}
.res-card.is-dark p,.res-card.is-dark li{color:rgba(247,246,242,.78);}
.res-card.is-dark .res-list li{border-bottom-color:rgba(247,246,242,.18);}
.res-card.is-dark .val{color:var(--accent-500);}

/* ---------- form ---------- */
.form-section{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:32px;box-shadow:var(--shadow-1);
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:7px;}
.field .hint{font-size:12px;color:var(--ink-300);font-weight:400;margin-left:6px;}
.field input,.field textarea,.field select{
  width:100%;height:44px;padding:0 14px;
  border:1px solid var(--line);border-radius:10px;background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:120px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(18,160,133,.14);
}
.field.has-error input,.field.has-error textarea{border-color:var(--err);}
.field .err{display:none;font-size:12px;color:var(--err);margin-top:6px;}
.field.has-error .err{display:block;}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:8px;}
.form-note{font-size:13px;color:var(--ink-300);}
.form-alert{
  display:none;margin-top:18px;padding:12px 16px;border-radius:12px;
  font-size:14px;background:rgba(27,138,90,.10);color:var(--ok);border:1px solid rgba(27,138,90,.25);
}
.form-alert.is-on{display:block;}

/* ---------- dark cta ---------- */
.dark-cta{
  background:var(--dark);color:rgba(247,246,242,.85);
  border-radius:var(--radius-lg);
  padding:56px 48px;position:relative;overflow:hidden;
}
.dark-cta::after{
  content:"";position:absolute;right:-60px;bottom:-80px;width:280px;height:280px;
  background:rgba(242,160,61,.10);border-radius:56px;transform:rotate(18deg);
}
.dark-cta h2{color:#fff;font-size:clamp(24px,3vw,32px);margin-bottom:12px;position:relative;z-index:1;}
.dark-cta p{max-width:560px;margin-bottom:26px;color:rgba(247,246,242,.78);position:relative;z-index:1;}
.dark-cta .btn-row{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:1;}
.dark-cta .meta{
  margin-top:22px;font-size:13px;color:rgba(247,246,242,.6);position:relative;z-index:1;
}
.dark-cta .meta .mono{color:var(--accent-500);}

/* ---------- footer ---------- */
.site-footer{
  background:var(--dark);color:rgba(247,246,242,.82);
  padding:64px 0 24px;margin-top:0;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:36px;
  padding-bottom:36px;border-bottom:1px solid rgba(247,246,242,.15);
}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:#fff;margin-bottom:14px;}
.footer-brand .brand-mark{background:var(--accent-500);}
.footer-brand .brand-mark::after{background:var(--brand-500);}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(247,246,242,.7);max-width:320px;margin:0;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:14px;font-weight:600;}
.footer-links li{margin-bottom:9px;}
.footer-links a,.footer-links span{font-size:14px;color:rgba(247,246,242,.74);}
.footer-links a:hover{color:var(--accent-500);}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;
  padding-top:20px;font-size:13px;color:rgba(247,246,242,.6);
}
.to-top{display:inline-flex;align-items:center;gap:8px;color:rgba(247,246,242,.8);font-size:13px;}
.to-top:hover{color:var(--accent-500);}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .section{padding:72px 0;}
  .container{padding:0 24px;}
  .nav-left,.nav-right{gap:18px;}
  .nav-link{font-size:14px;}
  .hero{padding:48px 0 64px;}
  .hero-media{margin-top:44px;}
  .hero-shot{transform:none;}
  .hero-float{right:12px;bottom:-22px;}
  .side-panel{position:static;margin-top:40px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .dark-cta{padding:44px 32px;}
}
@media (max-width:900px){
  .nav-left,.nav-right{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-grid{justify-content:space-between;}
  .brand-logo{order:-1;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  body{font-size:15.5px;}
  .hero h1{font-size:27px;}
  .hero-sub{font-size:16px;}
  .search-box{flex-wrap:wrap;padding:12px;}
  .search-box input{width:100%;flex:1 1 100%;height:36px;}
  .search-box .search-btn{width:100%;text-align:center;justify-content:center;}
  .tl-item{padding-left:48px;}
  .acc-head{font-size:15px;padding:15px 16px;}
  .acc-inner{padding:0 16px 18px;}
  .form-card{padding:22px;}
  .dark-cta{padding:36px 22px;border-radius:16px;}
  .dark-cta .btn-row .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .hero-badges{gap:14px;}
  .entry-card{padding:22px 18px;}
  .contact-card,.side-list{padding:20px;}
}