/* roulang page: index */
:root{
  --brand-900:#0B2E2A;
  --brand-700:#10403A;
  --brand-100:#E7F0EC;
  --accent-600:#E4572E;
  --accent-600-hover:#C8451F;
  --lime-400:#B9D94C;
  --ink:#22262B;
  --ink-2:#5A6360;
  --line:#E3E1DA;
  --surface:#FFFFFF;
  --bg:#FBFAF7;
  --bg-alt:#F4F2EC;
  --ok:#2F855A;
  --warn:#B7791F;
  --err:#C0392B;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(16,64,58,.06);
  --sh-2:0 10px 24px rgba(16,64,58,.12);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease-out;}
a:hover{color:var(--accent-600);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--brand-700);font-weight:700;}
h1{font-size:46px;line-height:1.22;letter-spacing:-.4px;}
h2{font-size:35px;line-height:1.3;}
h3{font-size:24px;line-height:1.4;}
h4{font-size:19px;line-height:1.5;}
p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;}
.num{font-variant-numeric:tabular-nums;font-weight:600;}

/* 容器 */
.container-xl{
  max-width:var(--container);
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
  width:100%;
}
@media (min-width:1400px){.container-xl{max-width:1280px;}}

/* 按钮 */
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--accent-600);color:#fff;font-size:16px;font-weight:600;
  padding:13px 26px;border:1px solid var(--accent-600);border-radius:var(--r-btn);
  transition:background .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
  cursor:pointer;
}
.btn-brand:hover{background:var(--accent-600-hover);border-color:var(--accent-600-hover);color:#fff;transform:translateY(-2px);box-shadow:0 8px 18px rgba(228,87,46,.28);}
.btn-brand:active{transform:translateY(0);box-shadow:none;}
.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--brand-700);font-size:16px;font-weight:600;
  padding:12px 24px;border:1px solid var(--brand-700);border-radius:var(--r-btn);
  transition:background .2s ease-out,transform .2s ease-out,color .2s ease-out;
  cursor:pointer;
}
.btn-outline:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(0);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-700);font-weight:600;font-size:15px;
  border:0;background:none;padding:0;
}
.btn-text i{transition:transform .2s ease-out;font-size:12px;}
.btn-text:hover{color:var(--accent-600);}
.btn-text:hover i{transform:translateX(4px);}
.btn[disabled],.btn-brand[disabled]{opacity:.45;pointer-events:none;}
:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px;}

/* 徽章 */
.badge-soft{
  display:inline-block;background:var(--brand-100);color:var(--brand-700);
  font-size:13px;font-weight:600;padding:4px 12px;border-radius:999px;line-height:1.6;
}
.badge-lime{
  display:inline-block;background:var(--lime-400);color:#22262B;
  font-size:13px;font-weight:600;padding:4px 12px;border-radius:999px;line-height:1.6;
}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  transition:background .22s ease-out,border-color .22s ease-out,backdrop-filter .22s ease-out;
}
.site-header.is-scrolled{
  background:rgba(251,250,247,.92);
  backdrop-filter:blur(8px);
  border-bottom-color:#D8D5CC;
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:64px;gap:20px;
}
.header-left{display:flex;align-items:center;gap:34px;min-width:0;}
.header-right{display:flex;align-items:center;gap:14px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:9px;background:var(--brand-700);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:17px;
  letter-spacing:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:16px;color:var(--brand-700);font-weight:700;letter-spacing:.2px;}
.brand-text em{font-style:normal;font-size:11px;color:var(--ink-2);letter-spacing:1.5px;}
.main-nav{display:flex;align-items:center;gap:26px;}
.main-nav .nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--brand-700);
  padding:6px 0;white-space:nowrap;
}
.main-nav .nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--accent-600);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease-out;
}
.main-nav .nav-link:hover::after{transform:scaleX(1);}
.main-nav .nav-link.active{font-weight:700;}
.main-nav .nav-link.active::after{transform:scaleX(1);}
.icon-btn{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
  background:var(--surface);color:var(--brand-700);display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:border-color .2s ease-out,background .2s ease-out;
}
.icon-btn:hover{border-color:var(--brand-700);background:var(--brand-100);}
.menu-btn{display:none;}
@media (max-width:991px){
  .menu-btn{display:flex;}
  .header-left{gap:16px;}
  .header-right .btn-brand{display:none;}
}
@media (max-width:575px){
  .container-xl{padding-left:20px;padding-right:20px;}
  .brand-text strong{font-size:15px;}
}

/* 移动抽屉 */
.offcanvas-end{width:84vw;}
.offcanvas{background:var(--bg);}
.offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.offcanvas-body{padding:0;display:flex;flex-direction:column;}
.drawer-nav{flex:1;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;padding:0 20px;border-bottom:1px solid var(--line);
  color:var(--brand-700);font-size:16px;font-weight:500;
}
.drawer-nav a.active{font-weight:700;color:var(--accent-600);}
.drawer-nav a:hover{background:var(--brand-100);}
.drawer-cta{padding:18px 20px;border-top:1px solid var(--line);}
.drawer-cta .btn-brand{width:100%;}

/* Hero */
.hero{padding:64px 0 88px;background:linear-gradient(180deg,#FBFAF7 0%,#F4F2EC 100%);}
.hero-grid{display:grid;grid-template-columns:55% 45%;gap:48px;align-items:center;}
.hero-copy h1{margin-bottom:20px;}
.hero-sub{font-size:17px;color:var(--ink-2);max-width:600px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px;}
.hero-stats{display:flex;gap:40px;flex-wrap:wrap;}
.hero-stat strong{display:block;font-size:30px;line-height:1.2;color:var(--accent-600);}
.hero-stat span{font-size:13px;color:var(--ink-2);}
.hero-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);
  box-shadow:var(--sh-2);
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-700);
  background:var(--brand-100);border-radius:999px;padding:5px 14px;margin-bottom:20px;
}
.hero-tag i{color:var(--accent-600);}
@media (max-width:991px){
  .hero{padding:48px 0 72px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-figure img{aspect-ratio:16/10;}
  h1{font-size:34px;}
  h2{font-size:29px;}
  h3{font-size:21px;}
}
@media (max-width:575px){
  .hero-stats{gap:22px;}
  .hero-stat strong{font-size:24px;}
  .hero-actions .btn-brand,.hero-actions .btn-outline{width:100%;}
}

/* 价值主张条 */
.value-bar{background:var(--brand-100);border-left:3px solid var(--accent-600);}
.value-bar-inner{
  display:flex;flex-wrap:wrap;gap:0;padding:22px 0;
}
.value-item{
  flex:1 1 220px;padding:0 26px;font-size:15px;font-weight:600;color:var(--brand-700);
  border-right:1px solid rgba(16,64,58,.14);
}
.value-item:last-child{border-right:0;}
.value-item:first-child{padding-left:0;}
@media (max-width:991px){
  .value-item{flex:1 1 45%;border-right:0;padding:8px 0;}
}

/* 板块通用 */
.section{padding:96px 0;}
.section-alt{background:var(--bg-alt);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head p{font-size:16px;color:var(--ink-2);margin-top:14px;}
.eyebrow{font-size:13px;font-weight:600;letter-spacing:2px;color:var(--accent-600);text-transform:uppercase;margin-bottom:12px;}
@media (max-width:991px){.section{padding:72px 0;}}
@media (max-width:767px){.section{padding:56px 0;}}

/* 功能分组 */
.group-wrap{display:grid;grid-template-columns:340px 1fr;gap:56px;align-items:start;}
.group-side h2{margin-bottom:16px;}
.group-side p{color:var(--ink-2);font-size:16px;margin-bottom:20px;}
.group-tabs{display:flex;gap:10px;margin-bottom:28px;flex-wrap:wrap;}
.group-tab{
  border:1px solid var(--line);background:var(--surface);color:var(--brand-700);
  font-size:15px;font-weight:600;padding:9px 20px;border-radius:999px;cursor:pointer;
  transition:all .2s ease-out;
}
.group-tab.active{background:var(--brand-700);border-color:var(--brand-700);color:#fff;}
.group-tab:hover{border-color:var(--brand-700);}
.group-list{list-style:none;}
.group-list li{
  display:grid;grid-template-columns:52px 1fr;gap:18px;
  padding:24px 0;border-bottom:1px solid var(--line);
}
.group-list li:first-child{padding-top:0;}
.group-list .idx{
  font-size:20px;font-weight:700;color:var(--accent-600);line-height:1.4;
}
.group-list h4{margin-bottom:8px;}
.group-list p{font-size:15px;color:var(--ink-2);line-height:1.75;}
@media (max-width:991px){
  .group-wrap{grid-template-columns:1fr;gap:32px;}
}

/* 使用场景 */
.scene-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  margin-bottom:72px;
}
.scene-row:last-child{margin-bottom:0;}
.scene-row.reverse .scene-media{order:2;}
.scene-media img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-1);}
.scene-body h3{margin-bottom:14px;}
.scene-body p{color:var(--ink-2);font-size:16px;}
.scene-facts{list-style:none;margin-top:20px;border-top:1px solid var(--line);padding-top:18px;}
.scene-facts li{font-size:15px;color:var(--ink);padding:6px 0;display:flex;gap:10px;}
.scene-facts li i{color:var(--lime-400);margin-top:6px;font-size:11px;}
@media (max-width:991px){
  .scene-row{grid-template-columns:1fr;gap:26px;margin-bottom:52px;}
  .scene-row.reverse .scene-media{order:0;}
}

/* 案例 */
.case-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px 28px;margin-bottom:44px;box-shadow:var(--sh-1);
}
.case-stat strong{display:block;font-size:32px;line-height:1.2;color:var(--brand-700);}
.case-stat span{font-size:13px;color:var(--ink-2);}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.case-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .22s ease-out,box-shadow .22s ease-out;
}
.case-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.case-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.case-card-body{padding:24px;display:flex;flex-direction:column;gap:14px;flex:1;}
.case-card-body h4{font-size:18px;}
.case-card-body .concl{font-size:15px;color:var(--ink-2);}
.case-metrics{display:flex;gap:24px;border-top:1px solid var(--line);padding-top:14px;margin-top:auto;}
.case-metrics div strong{display:block;font-size:19px;color:var(--accent-600);}
.case-metrics div span{font-size:13px;color:var(--ink-2);}
@media (max-width:991px){
  .case-stats{grid-template-columns:repeat(2,1fr);}
  .case-grid{grid-template-columns:1fr;}
}

/* 价格 */
.price-note{
  display:inline-block;font-size:14px;color:var(--ink-2);background:var(--surface);
  border:1px solid var(--line);border-radius:999px;padding:7px 18px;margin-bottom:36px;
}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;align-items:stretch;}
.price-card{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px 28px;display:flex;flex-direction:column;box-shadow:var(--sh-1);
  transition:transform .22s ease-out,box-shadow .22s ease-out;
}
.price-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.price-card.featured{background:var(--brand-900);border-color:var(--brand-900);color:#E9EFED;}
.price-card.featured h3,.price-card.featured .price-amount{color:#fff;}
.price-card.featured .price-desc,.price-card.featured .price-list li{color:rgba(255,255,255,.82);}
.price-card.featured .price-list{border-top-color:rgba(255,255,255,.16);}
.price-flag{
  position:absolute;top:-13px;right:24px;background:var(--accent-600);color:#fff;
  font-size:13px;font-weight:600;padding:4px 14px;border-radius:999px;
}
.price-card h3{font-size:20px;margin-bottom:6px;}
.price-desc{font-size:14px;color:var(--ink-2);margin-bottom:20px;}
.price-amount{font-size:38px;font-weight:700;line-height:1.2;color:var(--brand-700);}
.price-amount small{font-size:15px;font-weight:500;color:var(--ink-2);margin-left:4px;}
.price-card.featured .price-amount small{color:rgba(255,255,255,.7);}
.price-list{list-style:none;margin:22px 0 28px;padding-top:20px;border-top:1px solid var(--line);flex:1;}
.price-list li{display:flex;gap:10px;font-size:15px;color:var(--ink-2);padding:6px 0;}
.price-list li i{color:var(--lime-400);margin-top:6px;font-size:12px;}
.price-card .btn-brand,.price-card .btn-outline{width:100%;}
.price-card.featured .btn-brand{background:var(--accent-600);}
@media (max-width:991px){
  .price-grid{grid-template-columns:1fr;gap:32px;}
  .price-card.featured{margin-top:8px;}
}

/* 资讯列表 */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:40px;}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.news-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);transition:transform .22s ease-out,box-shadow .22s ease-out;
  height:100%;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.news-card a{display:flex;flex-direction:column;gap:12px;padding:24px;height:100%;color:inherit;}
.news-title{font-size:18px;color:var(--brand-700);line-height:1.5;margin:0;}
.news-card a:hover .news-title{color:var(--accent-600);}
.news-sum{
  font-size:15px;color:var(--ink-2);line-height:1.75;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{font-size:13px;color:var(--ink-2);margin-top:auto;display:flex;align-items:center;gap:8px;}
.news-meta i{font-size:12px;}
.empty-state{
  min-height:160px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--r-card);padding:32px;text-align:center;
}
.empty-state i{font-size:32px;color:var(--line);}
.empty-state p{font-size:15px;color:var(--ink-2);margin:0;}
@media (max-width:991px){.news-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:767px){
  .news-grid{grid-template-columns:1fr;}
  .news-head{flex-direction:column;align-items:flex-start;}
}

/* FAQ */
.faq-wrap{max-width:900px;}
.accordion-item{
  background:var(--surface);border:1px solid var(--line)!important;border-radius:var(--r-card)!important;
  margin-bottom:14px;overflow:hidden;box-shadow:var(--sh-1);
}
.accordion-button{
  font-size:17px;font-weight:700;color:var(--brand-700);background:var(--surface);
  padding:20px 24px;box-shadow:none!important;border-left:3px solid transparent;
}
.accordion-button:not(.collapsed){
  color:var(--brand-700);background:var(--brand-100);border-left-color:var(--accent-600);
}
.accordion-button::after{
  background-image:none;content:"+";font-size:22px;font-weight:400;line-height:1;color:var(--accent-600);
  width:auto;height:auto;transform:none;display:flex;align-items:center;justify-content:center;
}
.accordion-button:not(.collapsed)::after{content:"−";transform:none;}
.accordion-body{padding:6px 24px 24px;font-size:15px;line-height:1.8;color:var(--ink-2);background:var(--brand-100);}

/* CTA 带 */
.cta-band{background:var(--brand-900);color:#fff;padding:56px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{color:#fff;font-size:30px;margin-bottom:8px;}
.cta-inner p{color:rgba(255,255,255,.75);font-size:16px;margin:0;}
@media (max-width:767px){
  .cta-band{padding:44px 0;}
  .cta-inner h2{font-size:24px;}
  .cta-inner .btn-brand{width:100%;}
}

/* 页脚 */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);padding:64px 0 0;font-size:15px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:18px;}
.site-footer a{color:rgba(255,255,255,.72);font-size:15px;}
.site-footer a:hover{color:var(--accent-600);}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text em{color:rgba(255,255,255,.55);}
.footer-brand p{margin:18px 0 0;line-height:1.8;font-size:14px;}
.footer-list{list-style:none;}
.footer-list li{padding:6px 0;}
.footer-contact li{padding:7px 0;display:flex;gap:10px;font-size:14px;}
.footer-contact i{color:var(--lime-400);margin-top:6px;font-size:13px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-links a{font-size:13px;}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
.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;
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
}

/* roulang page: article */
:root{
  --brand-900:#0B2E2A;
  --brand-700:#10403A;
  --brand-100:#E7F0EC;
  --accent-600:#E4572E;
  --accent-600-hover:#C8451F;
  --lime-400:#B9D94C;
  --ink:#22262B;
  --ink-2:#5A6360;
  --line:#E3E1DA;
  --surface:#FFFFFF;
  --bg:#FBFAF7;
  --bg-alt:#F4F2EC;
  --ok:#2F855A;
  --warn:#B7791F;
  --err:#C0392B;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-card:0 1px 2px rgba(16,64,58,.06);
  --sh-card-hover:0 10px 24px rgba(16,64,58,.12);
  --t:220ms ease-out;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-feature-settings:"tnum";
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--accent-600);}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--brand-700);font-weight:700;letter-spacing:.2px;}
p{margin:0 0 1.15em;}
ul,ol{margin:0 0 1.15em;padding-left:1.3em;}
li{margin-bottom:.4em;}
.container-xl{max-width:1200px;margin:0 auto;padding:0 32px;}
@media(min-width:1400px){.container-xl{max-width:1280px;}}
:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px;}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(251,250,247,.92);
  border-bottom:1px solid var(--line);
  transition:background var(--t),box-shadow var(--t),border-color var(--t);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(8px);
  border-color:#D6D3C9;
  box-shadow:0 4px 16px rgba(16,64,58,.07);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:64px;gap:24px;
}
.brand{display:inline-flex;align-items:center;gap:10px;}
.brand-mark{
  width:34px;height:34px;border-radius:9px;flex:0 0 34px;
  background:linear-gradient(140deg,var(--brand-700),var(--brand-900));
  color:#fff;font-weight:700;font-size:17px;
  display:inline-flex;align-items:center;justify-content:center;
  letter-spacing:0;
}
.brand-text{display:inline-flex;flex-direction:column;line-height:1.12;}
.brand-text strong{font-size:16px;color:var(--brand-900);letter-spacing:.5px;}
.brand-text em{font-style:normal;font-size:11px;color:var(--ink-2);letter-spacing:2px;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px;}
.main-nav .nav-link{
  position:relative;
  padding:8px 12px;font-size:15px;color:var(--brand-700);
  border-radius:8px;font-weight:500;
}
.main-nav .nav-link:hover{color:var(--accent-600);background:var(--brand-100);}
.main-nav .nav-link.active{color:var(--brand-900);font-weight:700;}
.main-nav .nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--accent-600);border-radius:2px;
}
.nav-right{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:38px;height:38px;border-radius:9px;border:1px solid var(--line);
  background:#fff;color:var(--brand-700);
  display:inline-flex;align-items:center;justify-content:center;
  transition:all var(--t);
}
.icon-btn:hover{border-color:var(--brand-700);background:var(--brand-100);color:var(--brand-900);}
.btn-primary-brand{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;border-radius:var(--r-btn);border:1px solid var(--accent-600);
  background:var(--accent-600);color:#fff;font-size:15px;font-weight:600;
  transition:all var(--t);cursor:pointer;
}
.btn-primary-brand:hover{background:var(--accent-600-hover);border-color:var(--accent-600-hover);color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(228,87,46,.28);}
.btn-primary-brand:active{transform:translateY(0);}
.btn-ghost-brand{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;border-radius:var(--r-btn);
  border:1px solid var(--brand-700);background:transparent;color:var(--brand-700);
  font-size:15px;font-weight:600;transition:all var(--t);cursor:pointer;
}
.btn-ghost-brand:hover{background:var(--brand-100);color:var(--brand-900);transform:translateY(-2px);}
.btn-text-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--accent-600);
  font-weight:600;font-size:15px;
}
.btn-text-link i{transition:transform var(--t);}
.btn-text-link:hover i{transform:translateX(4px);}
.menu-toggle{
  width:40px;height:40px;border-radius:9px;border:1px solid var(--line);background:#fff;
  color:var(--brand-900);display:inline-flex;align-items:center;justify-content:center;
}
.offcanvas{width:84vw !important;max-width:340px;}
.offcanvas-header{border-bottom:1px solid var(--line);padding:16px 20px;}
.offcanvas-body{padding:0;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;padding:0 20px;border-bottom:1px solid var(--line);
  color:var(--brand-700);font-size:15px;font-weight:500;
}
.drawer-nav a.active{color:var(--accent-600);font-weight:700;}
.drawer-cta{padding:16px 20px;border-top:1px solid var(--line);position:sticky;bottom:0;background:#fff;}
.drawer-cta .btn-primary-brand{width:100%;justify-content:center;}

/* ===== Breadcrumb ===== */
.crumb-bar{background:var(--bg-alt);border-bottom:1px solid var(--line);}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;padding:14px 0;font-size:13px;color:var(--ink-2);}
.crumb a{color:var(--ink-2);}
.crumb a:hover{color:var(--accent-600);}
.crumb .sep{color:#B8B5AC;}
.crumb .cur{color:var(--brand-700);font-weight:600;}

/* ===== Article layout ===== */
.article-wrap{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:48px;padding:48px 0 80px;align-items:start;}
.article-head{border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:28px;}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;border-radius:999px;background:var(--brand-100);color:var(--brand-700);
  font-size:13px;font-weight:600;margin-bottom:14px;
}
.article-head h1{font-size:44px;line-height:1.22;margin-bottom:14px;}
@media(max-width:991px){.article-head h1{font-size:32px;}}
@media(max-width:520px){.article-head h1{font-size:27px;}}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:16px;font-size:13px;color:var(--ink-2);}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C6C3B9;}
.meta-share{display:inline-flex;gap:8px;margin-left:auto;}
.meta-share a{
  width:30px;height:30px;border-radius:8px;border:1px solid var(--line);background:#fff;
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink-2);font-size:13px;
}
.meta-share a:hover{border-color:var(--accent-600);color:var(--accent-600);background:#fff;}

.article-body{max-width:740px;font-size:17px;line-height:1.85;}
.article-body h2{
  font-size:34px;line-height:1.3;margin:48px 0 12px;position:relative;padding-left:18px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:12px;bottom:10px;width:4px;border-radius:3px;
  background:var(--accent-600);
}
.article-body h3{font-size:24px;line-height:1.4;margin:40px 0 12px;}
.article-body h4{font-size:19px;line-height:1.5;margin:32px 0 10px;}
.article-body p{margin:0 0 1.15em;}
.article-body a{color:var(--accent-600);border-bottom:1px solid rgba(228,87,46,.35);}
.article-body a:hover{color:var(--accent-600-hover);border-color:var(--accent-600-hover);}
.article-body ul,.article-body ol{max-width:740px;}
.article-body ul li::marker{color:var(--accent-600);}
.article-body ol li::marker{color:var(--accent-600);font-weight:700;}
.article-body blockquote{
  margin:28px 0;padding:18px 22px;background:#FDF6F1;border-left:3px solid var(--accent-600);
  border-radius:0 var(--r-img) var(--r-img) 0;color:var(--ink);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-img);margin:24px auto;box-shadow:var(--sh-card);}
.article-body figure{margin:28px 0;}
.article-body figcaption{text-align:center;font-size:13px;color:var(--ink-2);margin-top:10px;}
.article-body table{
  width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;
  border-radius:var(--r-img);overflow:hidden;
}
.article-body thead th{
  background:var(--brand-100);color:var(--brand-700);font-weight:600;font-size:14px;
  padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);
}
.article-body tbody td{padding:12px 16px;border-bottom:1px solid var(--line);height:44px;}
.article-body tbody tr:nth-child(even){background:var(--bg-alt);}
.table-scroll{overflow-x:auto;}
.table-scroll::-webkit-scrollbar{height:6px;}
.table-scroll::-webkit-scrollbar-thumb{background:#CFCBC0;border-radius:6px;}
.article-body pre{
  background:var(--bg-alt);border:1px solid var(--line);border-radius:10px;
  padding:16px 18px;overflow-x:auto;font-family:"SFMono-Regular",Consolas,monospace;
  font-size:14px;line-height:1.7;color:#33393F;
}
.article-body code{font-family:"SFMono-Regular",Consolas,monospace;font-size:.94em;background:var(--bg-alt);padding:2px 6px;border-radius:6px;}

/* TOC */
.toc-panel{position:sticky;top:96px;border-left:1px solid var(--line);padding-left:20px;}
.toc-panel h3{font-size:14px;letter-spacing:1px;color:var(--ink-2);margin-bottom:14px;font-weight:600;}
.toc-panel a{display:block;font-size:14px;color:var(--ink-2);padding:6px 0 6px 12px;border-left:2px solid transparent;line-height:1.5;}
.toc-panel a:hover{color:var(--accent-600);}
.toc-panel a.is-cur{color:var(--brand-900);font-weight:600;border-left-color:var(--accent-600);}
.toc-panel a.lvl3{padding-left:26px;font-size:13px;}

/* Article tail */
.article-tail{max-width:740px;margin-top:56px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:36px;}
.tag-row .tag{
  padding:5px 14px;border-radius:999px;background:var(--lime-400);color:#2A3208;
  font-size:13px;font-weight:600;
}
.pager-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:48px;}
.pager-card{
  display:block;padding:20px;border:1px solid var(--line);border-radius:var(--r-card);
  background:#fff;transition:all var(--t);
}
.pager-card:hover{transform:translateY(-3px);box-shadow:var(--sh-card-hover);border-color:#D4D0C5;}
.pager-card span{font-size:12px;color:var(--ink-2);letter-spacing:1px;}
.pager-card strong{display:block;font-size:16px;color:var(--brand-700);margin-top:8px;line-height:1.5;}
.pager-card.next{text-align:right;}
@media(max-width:575px){.pager-grid{grid-template-columns:1fr;}.pager-card.next{text-align:left;}}

.rel-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:20px;}
.rel-head h2{font-size:24px;}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
@media(max-width:991px){.rel-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:575px){.rel-grid{grid-template-columns:1fr;}}
.news-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);transition:all var(--t);height:100%;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--sh-card-hover);}
.news-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--bg-alt);}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;}
.news-card .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-card h3{font-size:17px;line-height:1.5;}
.news-card p{font-size:14px;color:var(--ink-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card .foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-2);}
.badge-soft{
  display:inline-flex;padding:4px 12px;border-radius:999px;background:var(--brand-100);
  color:var(--brand-700);font-size:13px;font-weight:600;
}
.back-entry{margin-top:40px;}

/* Empty state */
.empty-box{
  max-width:740px;border:1px dashed #D5D1C6;border-radius:var(--r-card);
  background:#fff;padding:48px 24px;text-align:center;
}
.empty-box .ico{
  width:72px;height:72px;border-radius:50%;background:var(--brand-100);color:var(--brand-700);
  display:inline-flex;align-items:center;justify-content:center;font-size:28px;margin-bottom:16px;
}
.empty-box h2{font-size:22px;margin-bottom:8px;}
.empty-box p{color:var(--ink-2);font-size:15px;}

/* CTA band */
.cta-band{background:var(--brand-900);color:#fff;padding:56px 0;}
.cta-band .inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;}
.cta-band h2{color:#fff;font-size:30px;margin-bottom:8px;}
.cta-band p{color:rgba(255,255,255,.72);margin:0;font-size:15px;}
.cta-band .actions{display:flex;gap:14px;flex-wrap:wrap;}
.btn-lime{
  display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:var(--r-btn);
  background:var(--lime-400);color:#232B05;font-weight:700;border:1px solid var(--lime-400);
  transition:all var(--t);
}
.btn-lime:hover{background:#A9C93C;border-color:#A9C93C;color:#232B05;transform:translateY(-2px);}
.btn-outline-light2{
  display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.45);color:#fff;font-weight:600;transition:all var(--t);
}
.btn-outline-light2:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;transform:translateY(-2px);}

/* Footer */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.78);padding:64px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:48px;}
@media(max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px;}}
@media(max-width:575px){.footer-grid{grid-template-columns:1fr;}}
.site-footer .brand-text strong{color:#fff;}
.site-footer .brand-text em{color:rgba(255,255,255,.55);}
.site-footer .brand-mark{background:linear-gradient(140deg,#1B5A50,#0B2E2A);}
.footer-brand p{color:rgba(255,255,255,.68);line-height:1.8;margin-top:16px;font-size:14px;}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:18px;}
.footer-list{list-style:none;padding:0;margin:0;}
.footer-list li{margin-bottom:11px;}
.footer-list a{color:rgba(255,255,255,.72);font-size:14px;}
.footer-list a:hover{color:var(--accent-600);}
.footer-contact li{display:flex;gap:10px;color:rgba(255,255,255,.72);}
.footer-contact i{color:var(--lime-400);margin-top:5px;font-size:13px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-links a{color:rgba(255,255,255,.6);font-size:13px;}
.footer-links a:hover{color:var(--accent-600);}

@media(max-width:991px){
  .container-xl{padding:0 24px;}
  .article-wrap{grid-template-columns:1fr;gap:0;padding:36px 0 64px;}
  .toc-panel{display:none;}
  .article-body h2{font-size:28px;}
  .cta-band h2{font-size:24px;}
}
@media(max-width:767px){
  .container-xl{padding:0 20px;}
  .article-body{font-size:16px;}
  .article-body h2{font-size:25px;margin-top:38px;}
  .article-body h3{font-size:20px;}
  .cta-band{padding:44px 0;}
  .site-footer{padding-top:48px;}
}

/* roulang page: category1 */
:root{
  --brand-900:#0B2E2A;
  --brand-700:#10403A;
  --brand-100:#E7F0EC;
  --accent-600:#E4572E;
  --accent-600-hover:#C8451F;
  --lime-400:#B9D94C;
  --ink:#22262B;
  --ink-2:#5A6360;
  --line:#E3E1DA;
  --surface:#FFFFFF;
  --bg:#FBFAF7;
  --bg-alt:#F4F2EC;
  --ok:#2F855A;
  --warn:#B7791F;
  --err:#C0392B;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(16,64,58,.06);
  --shadow-2:0 10px 24px rgba(16,64,58,.12);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease-out;}
a:hover{color:var(--accent-600);}
h1,h2,h3,h4{color:var(--brand-700);margin:0;font-weight:700;letter-spacing:.2px;}
p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}
ul{padding-left:1.1em;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px;}

.container-xl{width:100%;max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px;}
@media (min-width:1400px){.container-xl{max-width:1280px;}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  transition:background .22s ease-out,box-shadow .22s ease-out;
}
.site-header.scrolled{
  background:rgba(251,250,247,.92);
  backdrop-filter:blur(8px);
  box-shadow:0 1px 0 var(--line),0 8px 22px rgba(16,64,58,.07);
}
.header-inner{display:flex;align-items:center;height:64px;gap:16px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand-700);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:17px;line-height:1;
}
.brand-text{display:inline-flex;align-items:baseline;gap:3px;color:var(--brand-900);font-size:17px;line-height:1;}
.brand-text strong{font-weight:700;}
.brand-text em{font-style:normal;font-size:12px;font-weight:600;color:var(--accent-600);letter-spacing:.6px;}

.main-nav{margin-left:14px;align-items:center;gap:2px;}
.main-nav .nav-link{
  position:relative;padding:9px 12px;font-size:15.5px;font-weight:500;color:var(--ink-2);
  border-radius:8px;transition:color .2s ease-out;
}
.main-nav .nav-link:hover{color:var(--brand-700);}
.main-nav .nav-link.active{color:var(--brand-700);font-weight:700;}
.main-nav .nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--accent-600);border-radius:2px;
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;
  color:var(--brand-700);display:inline-flex;align-items:center;justify-content:center;
  transition:border-color .2s ease-out,color .2s ease-out,background .2s ease-out;
}
.icon-btn:hover{border-color:var(--brand-700);background:var(--brand-100);color:var(--brand-700);}

/* ---------- buttons ---------- */
.btn.btn-brand{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--accent-600);color:#fff;border:1px solid var(--accent-600);
  padding:11px 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.4;
  transition:background .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.btn.btn-brand:hover,.btn.btn-brand:focus{
  background:var(--accent-600-hover);border-color:var(--accent-600-hover);color:#fff;
  transform:translateY(-2px);box-shadow:0 10px 20px rgba(228,87,46,.26);
}
.btn.btn-brand:active{transform:translateY(0);box-shadow:none;}
.btn.btn-outline-brand{
  display:inline-flex;align-items:center;gap:8px;
  background:transparent;color:var(--brand-700);border:1px solid var(--brand-700);
  padding:11px 20px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;line-height:1.4;
  transition:background .2s ease-out,transform .2s ease-out,color .2s ease-out;
}
.btn.btn-outline-brand:hover,.btn.btn-outline-brand:focus{
  background:var(--brand-100);color:var(--brand-700);transform:translateY(-2px);
}
.btn.btn-outline-brand:active{transform:translateY(0);}
.btn.btn-ghost{
  display:inline-flex;align-items:center;gap:6px;padding:0;border:none;background:none;
  color:var(--brand-700);font-size:15px;font-weight:600;
}
.btn.btn-ghost i{transition:transform .2s ease-out;}
.btn.btn-ghost:hover i{transform:translateX(2px);}
.btn[disabled],.btn.disabled{opacity:.45;pointer-events:none;}

.badge-soft{
  display:inline-flex;align-items:center;gap:6px;background:var(--brand-100);color:var(--brand-700);
  border-radius:999px;padding:5px 13px;font-size:13px;font-weight:600;line-height:1.6;
}
.badge-lime{
  display:inline-flex;align-items:center;gap:6px;background:var(--lime-400);color:#1D2B14;
  border-radius:999px;padding:5px 13px;font-size:13px;font-weight:600;line-height:1.6;
}

/* ---------- breadcrumb ---------- */
.breadcrumb-bar{padding:22px 0 0;font-size:13.5px;color:var(--ink-2);}
.breadcrumb-bar a{color:var(--ink-2);}
.breadcrumb-bar a:hover{color:var(--brand-700);}
.breadcrumb-bar .sep{margin:0 8px;color:#C7CAC5;}

/* ---------- hero ---------- */
.hero{padding:34px 0 88px;background:linear-gradient(180deg,var(--bg) 0%,var(--bg-alt) 100%);}
.hero-grid{display:grid;grid-template-columns:42% 1fr;gap:52px;align-items:start;}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-img);
  box-shadow:0 16px 34px rgba(16,64,58,.16);
}
.hero h1{font-size:46px;line-height:1.22;margin:18px 0 0;}
.hero-sub{font-size:17px;color:var(--ink-2);margin:16px 0 0;line-height:1.75;}
.hero-divider{height:1px;background:var(--line);margin:26px 0;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}

.point-list{list-style:none;padding:0;margin:26px 0 0;}
.point-list li{
  display:grid;grid-template-columns:38px 1fr;gap:14px;
  padding:13px 0;border-top:1px solid var(--line);
}
.point-list li:last-child{border-bottom:1px solid var(--line);}
.point-list .idx{
  font-variant-numeric:tabular-nums;font-weight:700;color:var(--accent-600);font-size:15px;line-height:1.6;
}
.point-list b{display:block;font-size:16px;color:var(--brand-900);line-height:1.6;}
.point-list span{font-size:14.5px;color:var(--ink-2);line-height:1.7;}

/* ---------- section ---------- */
.section{padding:88px 0;}
.section-alt{background:var(--bg-alt);}
.section-tight{padding:72px 0;}
.section-head{max-width:740px;margin-bottom:42px;}
.section-head h2{font-size:34px;line-height:1.3;margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--ink-2);margin:0;line-height:1.8;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;color:var(--accent-600);
  letter-spacing:1.5px;margin-bottom:12px;
}

.card-soft{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-1);height:100%;
  transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
}
.card-soft:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D6DED9;}
.card-soft h3{font-size:19px;line-height:1.5;margin-bottom:10px;color:var(--brand-900);}
.card-soft p{font-size:15px;color:var(--ink-2);line-height:1.78;margin:0;}
.card-icon{
  width:42px;height:42px;border-radius:11px;background:var(--brand-100);color:var(--brand-700);
  display:inline-flex;align-items:center;justify-content:center;font-size:17px;margin-bottom:16px;
}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}

/* ---------- table ---------- */
.table-wrap{
  overflow-x:auto;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-1);
}
table.cmp{width:100%;border-collapse:collapse;min-width:780px;font-size:15px;}
table.cmp thead th{
  background:var(--brand-100);color:var(--brand-700);font-weight:600;font-size:14px;
  text-align:left;padding:15px 18px;border-bottom:1px solid var(--line);white-space:nowrap;
}
table.cmp tbody td{
  padding:15px 18px;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.72;
}
table.cmp tbody tr:nth-child(even){background:var(--bg-alt);}
table.cmp tbody tr:last-child td{border-bottom:none;}
table.cmp tbody th{
  text-align:left;font-weight:600;color:var(--brand-900);padding:15px 18px;
  border-bottom:1px solid var(--line);vertical-align:top;white-space:nowrap;
}
.table-note{font-size:13px;color:var(--ink-2);margin-top:14px;}

/* ---------- split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;}
.split + .split{margin-top:72px;}
.split-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--radius-img);
  box-shadow:0 12px 28px rgba(16,64,58,.14);
}
.split.reverse .split-media{order:2;}
.split h3{font-size:24px;line-height:1.4;margin:14px 0 14px;}
.split p{font-size:16px;color:var(--ink-2);line-height:1.82;}
.result-line{
  display:flex;gap:10px;align-items:flex-start;margin-top:18px;padding:14px 18px;
  background:var(--brand-100);border-radius:12px;font-size:14.5px;color:var(--brand-700);line-height:1.7;
}
.result-line i{color:var(--accent-600);margin-top:4px;}
.mini-list{list-style:none;padding:0;margin:16px 0 0;}
.mini-list li{
  position:relative;padding-left:18px;font-size:15px;color:var(--ink-2);line-height:1.75;margin-bottom:8px;
}
.mini-list li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;
  background:var(--lime-400);
}

/* ---------- metrics ---------- */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
}
.metric{padding:26px 22px;border-right:1px solid var(--line);}
.metric:last-child{border-right:none;}
.metric .num{
  font-size:30px;font-weight:700;color:var(--accent-600);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.metric .num small{font-size:15px;font-weight:600;margin-left:2px;}
.metric .lbl{font-size:13px;color:var(--ink-2);margin-top:8px;line-height:1.6;}

.quote-card{
  border-left:3px solid var(--accent-600);background:#fff;
  border-radius:0 12px 12px 0;padding:22px 26px;
  font-size:16.5px;line-height:1.8;color:var(--brand-900);
  box-shadow:var(--shadow-1);margin-top:28px;
}
.quote-card cite{
  display:block;margin-top:12px;font-style:normal;font-size:13.5px;color:var(--ink-2);
}

/* ---------- faq ---------- */
.faq .accordion-item{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:#fff;margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow-1);
}
.faq .accordion-button{
  background:#fff;color:var(--brand-900);font-size:17px;font-weight:700;
  padding:20px 22px;border-left:3px solid transparent;box-shadow:none;
  transition:border-color .2s ease-out,background .2s ease-out;
  display:flex;align-items:center;
}
.faq .accordion-button::before{
  content:"+";font-size:20px;font-weight:600;color:var(--accent-600);
  margin-right:14px;line-height:1;flex:0 0 auto;
}
.faq .accordion-button:not(.collapsed)::before{content:"−";}
.faq .accordion-button::after{display:none;}
.faq .accordion-button:not(.collapsed){border-left-color:var(--accent-600);background:#fff;color:var(--brand-900);}
.faq .accordion-button:focus{box-shadow:0 0 0 3px rgba(16,64,58,.12);}
.faq .accordion-body{
  font-size:15px;line-height:1.8;color:var(--ink-2);padding:0 26px 22px 56px;
}

/* ---------- cta ---------- */
.cta-band{
  background:var(--brand-900);border-radius:16px;padding:46px 46px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
}
.cta-band h2{color:#fff;font-size:28px;line-height:1.35;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.72);font-size:15px;margin:0;line-height:1.75;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto;}
.cta-actions .btn.btn-outline-light-brand{
  display:inline-flex;align-items:center;gap:8px;background:transparent;color:#fff;
  border:1px solid rgba(255,255,255,.5);padding:11px 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;transition:.2s ease-out;
}
.cta-actions .btn.btn-outline-light-brand:hover{
  background:rgba(255,255,255,.12);border-color:#fff;color:#fff;transform:translateY(-2px);
}

/* ---------- cross links ---------- */
.xlink-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.xlink{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-1);
  transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
}
.xlink:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D6DED9;color:inherit;}
.xlink b{display:block;font-size:16px;color:var(--brand-900);line-height:1.5;}
.xlink span{font-size:13.5px;color:var(--ink-2);line-height:1.6;}
.xlink i{color:var(--accent-600);flex:0 0 auto;transition:transform .2s ease-out;}
.xlink:hover i{transform:translateX(3px);}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.78);padding:66px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.35fr;gap:40px;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:18px;letter-spacing:.4px;}
.site-footer .brand-text{color:#fff;}
.site-footer .brand-text em{color:var(--lime-400);}
.site-footer .brand-mark{background:var(--accent-600);}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.68);margin:16px 0 12px;}
.footer-list{list-style:none;padding:0;margin:0;}
.footer-list li{margin-bottom:11px;font-size:14.5px;line-height:1.6;}
.footer-list a{color:rgba(255,255,255,.78);}
.footer-list a:hover{color:var(--accent-600);}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;color:rgba(255,255,255,.72);}
.footer-contact i{color:var(--lime-400);margin-top:5px;flex:0 0 auto;}
.footer-bottom{
  margin-top:50px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-links a{color:rgba(255,255,255,.6);font-size:13px;}
.footer-links a:hover{color:var(--accent-600);}

/* ---------- mobile nav ---------- */
.mobile-nav{width:84vw !important;background:var(--bg);}
.mobile-nav .offcanvas-header{
  border-bottom:1px solid var(--line);padding:16px 20px;
}
.mobile-nav .offcanvas-body{padding:0;display:flex;flex-direction:column;}
.mobile-nav .nav-link{
  display:block;padding:0 20px;height:52px;line-height:52px;font-size:16px;
  color:var(--ink);border-bottom:1px solid var(--line);border-radius:0;
}
.mobile-nav .nav-link:hover{background:var(--brand-100);color:var(--brand-700);}
.mobile-nav .nav-link.active{
  color:var(--brand-700);font-weight:700;border-left:3px solid var(--accent-600);
  background:var(--brand-100);
}
.mobile-cta{margin-top:auto;padding:18px 20px;border-top:1px solid var(--line);background:var(--bg);}
.mobile-cta .btn{width:100%;justify-content:center;}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .hero-grid{gap:36px;}
  .hero h1{font-size:40px;}
  .split{gap:36px;}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;gap:32px;}
}
@media (min-width:768px) and (max-width:991px){
  .hero-grid{grid-template-columns:38% 1fr;gap:26px;}
  .hero h1{font-size:32px;}
  .hero-sub{font-size:15.5px;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .metric:nth-child(2){border-right:none;}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:991px){
  .section{padding:72px 0;}
  .section-tight{padding:60px 0;}
  .section-head h2{font-size:30px;}
  .grid-2{grid-template-columns:1fr;gap:18px;}
  .split{grid-template-columns:1fr;gap:26px;}
  .split.reverse .split-media{order:0;}
  .split + .split{margin-top:56px;}
  .xlink-grid{grid-template-columns:1fr;gap:16px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 30px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container-xl{padding-left:20px;padding-right:20px;}
  .header-inner{height:56px;}
  .hero{padding:22px 0 56px;}
  .hero-grid{grid-template-columns:1fr;gap:26px;}
  .hero-media{order:2;}
  .hero h1{font-size:32px;}
  .hero-sub{font-size:15.5px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{width:100%;justify-content:center;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .section-head{margin-bottom:30px;}
  .section-head h2{font-size:26px;}
  .card-soft{padding:20px;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .metric{padding:20px 16px;border-right:none;border-bottom:1px solid var(--line);}
  .metric:nth-child(odd){border-right:1px solid var(--line);}
  .metric:nth-child(3),.metric:nth-child(4){border-bottom:none;}
  .metric .num{font-size:24px;}
  .faq .accordion-button{font-size:16px;padding:16px 16px;}
  .faq .accordion-body{padding:0 18px 18px 46px;}
  .cta-band{padding:30px 22px;border-radius:14px;}
  .cta-band h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;justify-content:center;}
  .site-footer{padding:52px 0 24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .quote-card{padding:18px 20px;font-size:15.5px;}
}
@media (max-width:520px){
  .hero h1{font-size:28px;}
  .metrics{grid-template-columns:1fr;}
  .metric{border-right:none !important;border-bottom:1px solid var(--line);}
  .metric:last-child{border-bottom:none;}
  .point-list li{grid-template-columns:30px 1fr;gap:10px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --brand-900:#0B2E2A;
  --brand-700:#10403A;
  --brand-100:#E7F0EC;
  --accent-600:#E4572E;
  --accent-600-hover:#C8451F;
  --lime-400:#B9D94C;
  --ink:#22262B;
  --ink-2:#5A6360;
  --line:#E3E1DA;
  --surface:#FFFFFF;
  --bg:#FBFAF7;
  --bg-alt:#F4F2EC;
  --success:#2F855A;
  --warning:#B7791F;
  --danger:#C0392B;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 1px 2px rgba(16,64,58,.06);
  --shadow-hover:0 10px 24px rgba(16,64,58,.12);
  --nav-h:64px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease-out;}
a:hover{color:var(--accent-600);}
h1,h2,h3,h4{margin:0;color:var(--brand-900);font-weight:700;}
p{margin:0 0 1.15em;}
ul{margin:0;padding-left:1.2em;}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px;}

.container-xl{max-width:1200px;padding-left:32px;padding-right:32px;margin-left:auto;margin-right:auto;}
@media (min-width:1200px){.container-xl{max-width:1200px;}}
@media (min-width:1400px){.container-xl{max-width:1280px;}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(251,250,247,.94);
  border-bottom:1px solid var(--line);
  transition:background .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.9);
  backdrop-filter:blur(8px);
  border-bottom-color:#D8D5CC;
  box-shadow:0 4px 16px rgba(16,64,58,.07);
}
.header-inner{display:flex;align-items:center;gap:20px;height:var(--nav-h);}

.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto;}
.brand:hover{color:var(--brand-900);}
.brand-mark{
  width:34px;height:34px;border-radius:9px;background:var(--brand-700);color:#fff;
  display:grid;place-items:center;font-size:16px;font-weight:700;letter-spacing:.02em;
}
.brand-text{display:flex;align-items:baseline;gap:2px;line-height:1;}
.brand-text strong{font-size:17px;font-weight:700;color:var(--brand-700);letter-spacing:.01em;}
.brand-text em{font-style:normal;font-size:12px;font-weight:600;color:var(--ink-2);letter-spacing:.06em;}

.main-nav{display:flex;align-items:center;gap:2px;margin-left:10px;}
.main-nav .nav-link{
  position:relative;padding:8px 11px;font-size:15px;font-weight:500;
  color:var(--brand-700);border-radius:8px;white-space:nowrap;
  transition:color .2s ease-out;
}
.main-nav .nav-link:hover{color:var(--accent-600);}
.main-nav .nav-link.active{font-weight:700;color:var(--brand-900);}
.main-nav .nav-link.active::after{
  content:"";position:absolute;left:11px;right:11px;bottom:1px;height:2px;
  background:var(--accent-600);border-radius:2px;
}

.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;
  color:var(--brand-700);display:grid;place-items:center;font-size:14px;
  transition:all .2s ease-out;
}
.icon-btn:hover{background:var(--brand-100);border-color:#CFDED8;color:var(--brand-900);}
.hamburger{
  width:40px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;
  color:var(--brand-700);display:grid;place-items:center;font-size:16px;
}
.hamburger:hover{background:var(--brand-100);}

/* ---------- buttons ---------- */
.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--accent-600);border:1px solid var(--accent-600);color:#fff;
  border-radius:var(--radius-btn);padding:11px 22px;font-size:15px;font-weight:600;
  line-height:1.2;cursor:pointer;transition:all .2s ease-out;
}
.btn-accent:hover{background:var(--accent-600-hover);border-color:var(--accent-600-hover);color:#fff;transform:translateY(-2px);box-shadow:0 8px 18px rgba(228,87,46,.28);}
.btn-accent:active{transform:translateY(0);box-shadow:none;}
.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;border:1px solid var(--brand-700);color:var(--brand-700);
  border-radius:var(--radius-btn);padding:11px 22px;font-size:15px;font-weight:600;
  line-height:1.2;cursor:pointer;transition:all .2s ease-out;
}
.btn-outline:hover{background:var(--brand-100);color:var(--brand-900);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(0);}
.btn-light-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.45);color:#fff;
  border-radius:var(--radius-btn);padding:11px 22px;font-size:15px;font-weight:600;
  line-height:1.2;cursor:pointer;transition:all .2s ease-out;
}
.btn-light-ghost:hover{background:rgba(255,255,255,.22);color:#fff;transform:translateY(-2px);}
.btn-accent[disabled],.btn-outline[disabled]{opacity:.45;pointer-events:none;}

.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;
  color:var(--brand-700);
}
.text-link i{font-size:12px;transition:transform .2s ease-out;}
.text-link:hover{color:var(--accent-600);}
.text-link:hover i{transform:translateX(3px);}

/* ---------- banner ---------- */
.banner-wrap{padding:26px 0 0;}
.breadcrumb-nav{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13.5px;line-height:1.6;color:var(--ink-2);margin-bottom:16px;
}
.breadcrumb-nav a{color:var(--ink-2);}
.breadcrumb-nav a:hover{color:var(--brand-700);}
.breadcrumb-nav span{color:#C6C3BA;}
.breadcrumb-nav em{font-style:normal;color:var(--ink-2);}

.page-banner{
  position:relative;overflow:hidden;border-radius:var(--radius-img);
  aspect-ratio:16/5;min-height:250px;display:flex;align-items:flex-end;
  background:var(--brand-900);
}
.page-banner img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(96deg,rgba(11,46,42,.9) 0%,rgba(11,46,42,.72) 42%,rgba(11,46,42,.3) 100%);
}
.banner-inner{position:relative;z-index:2;padding:44px 48px;color:#fff;max-width:820px;}
.banner-tag{
  display:inline-block;padding:5px 14px;border-radius:999px;font-size:13px;font-weight:600;
  background:rgba(185,217,76,.16);color:var(--lime-400);border:1px solid rgba(185,217,76,.4);
  margin-bottom:16px;
}
.banner-inner h1{
  color:#fff;font-size:42px;line-height:1.24;letter-spacing:-.01em;margin-bottom:14px;
}
.banner-inner p{color:rgba(255,255,255,.82);font-size:16px;line-height:1.8;margin:0 0 24px;max-width:660px;}
.banner-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- sections ---------- */
.section{padding:92px 0;}
.section-alt{background:var(--bg-alt);}
.section-tight{padding:64px 0;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;
  color:var(--accent-600);text-transform:uppercase;margin-bottom:12px;
}
.section-head{max-width:740px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head h2{font-size:34px;line-height:1.3;margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--ink-2);margin:0;}
.sec-title-sticky h2{font-size:32px;line-height:1.32;margin:0 0 14px;}
.sec-title-sticky p{font-size:15.5px;color:var(--ink-2);margin-bottom:20px;}

/* ---------- definition list ---------- */
.def-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 44px;margin:0;}
.def-item{padding:22px 0;border-bottom:1px solid var(--line);}
.def-item dt{
  display:flex;gap:10px;font-size:17px;font-weight:700;color:var(--brand-700);line-height:1.5;
}
.def-item dt .num{
  color:var(--accent-600);font-variant-numeric:tabular-nums;font-weight:600;flex:0 0 auto;
}
.def-item dd{margin:8px 0 0;font-size:15px;line-height:1.75;color:var(--ink-2);}

/* ---------- metric cards ---------- */
.metric-card{
  height:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow-card);transition:all .22s ease-out;
}
.metric-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.metric-num{
  font-size:38px;font-weight:600;line-height:1.12;color:var(--accent-600);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.metric-num small{font-size:16px;font-weight:600;margin-left:4px;color:var(--accent-600);}
.metric-label{font-size:15px;font-weight:700;color:var(--brand-900);margin:10px 0 6px;}
.metric-card p{font-size:14px;line-height:1.7;color:var(--ink-2);margin:0;}

/* ---------- accordion: spec ---------- */
.spec-accordion .accordion-item{
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  background:var(--surface);box-shadow:var(--shadow-card);margin-bottom:16px;
}
.spec-accordion .accordion-item:last-child{margin-bottom:0;}
.spec-accordion .accordion-button{
  font-size:17px;font-weight:700;color:var(--brand-700);background:var(--surface);
  padding:20px 24px;box-shadow:none;border-left:3px solid transparent;
  transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.spec-accordion .accordion-button:not(.collapsed){
  color:var(--brand-900);background:var(--brand-100);border-left-color:var(--accent-600);
}
.spec-accordion .accordion-button:focus{box-shadow:none;border-color:var(--line);}
.spec-accordion .accordion-button::after{
  background-image:none;content:"+";font-size:20px;font-weight:600;line-height:1;
  width:auto;height:auto;color:var(--accent-600);transform:none;display:grid;place-items:center;
}
.spec-accordion .accordion-button:not(.collapsed)::after{content:"−";}
.spec-accordion .accordion-body{padding:6px 24px 24px;background:var(--surface);}
.feature-list{list-style:none;padding:0;margin:0;}
.feature-list li{
  position:relative;padding:12px 0 12px 22px;font-size:15px;line-height:1.78;color:var(--ink-2);
  border-bottom:1px dashed var(--line);
}
.feature-list li:last-child{border-bottom:none;}
.feature-list li::before{
  content:"";position:absolute;left:0;top:21px;width:8px;height:8px;border-radius:2px;
  background:var(--lime-400);
}
.feature-list strong{color:var(--brand-900);font-weight:700;}

/* ---------- faq ---------- */
.faq-accordion .accordion-item{
  border:none;border-bottom:1px solid var(--line);background:transparent;border-radius:0;
}
.faq-accordion .accordion-item:first-of-type{border-top:1px solid var(--line);}
.faq-accordion .accordion-button{
  position:relative;background:transparent;box-shadow:none;
  font-size:17px;font-weight:700;color:var(--brand-900);padding:22px 44px 22px 20px;
  transition:color .2s ease-out;
}
.faq-accordion .accordion-button::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:2px;
  background:transparent;transition:background .2s ease-out;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--brand-700);}
.faq-accordion .accordion-button:not(.collapsed)::before{background:var(--accent-600);}
.faq-accordion .accordion-button:focus{box-shadow:none;}
.faq-accordion .accordion-button::after{
  background-image:none;content:"+";font-size:19px;font-weight:600;color:var(--accent-600);
  width:auto;height:auto;transform:none;position:absolute;right:14px;top:50%;margin-top:-12px;
}
.faq-accordion .accordion-button:not(.collapsed)::after{content:"−";}
.faq-accordion .accordion-body{padding:0 44px 24px 20px;font-size:15px;line-height:1.82;color:var(--ink-2);}

/* ---------- link cards ---------- */
.link-card{
  display:flex;align-items:center;justify-content:space-between;gap:18px;height:100%;
  padding:22px 24px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);transition:all .22s ease-out;
}
.link-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(16,64,58,.22);color:var(--brand-900);}
.link-card .lc-body{min-width:0;}
.link-card .lc-title{font-size:16.5px;font-weight:700;color:var(--brand-900);margin-bottom:6px;}
.link-card .lc-desc{font-size:14px;line-height:1.7;color:var(--ink-2);margin:0;}
.link-card .lc-arrow{color:var(--accent-600);font-size:15px;transition:transform .2s ease-out;flex:0 0 auto;}
.link-card:hover .lc-arrow{transform:translateX(4px);}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--brand-900);border-radius:18px;color:#fff;
  padding:46px 48px;display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:28px;line-height:1.34;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.74);font-size:15px;line-height:1.75;margin:0;max-width:620px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);padding:64px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;}
.site-footer .brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;}
.site-footer .brand-mark{background:var(--accent-600);color:#fff;}
.site-footer .brand-text strong{color:#fff;}
.site-footer .brand-text em{color:rgba(255,255,255,.62);}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);margin:0 0 12px;}
.site-footer h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:18px;}
.footer-list{list-style:none;padding:0;margin:0;}
.footer-list li{margin-bottom:11px;font-size:14px;line-height:1.7;color:rgba(255,255,255,.66);}
.footer-list a{color:rgba(255,255,255,.72);font-size:14px;}
.footer-list a:hover{color:var(--accent-600);}
.footer-contact li{display:flex;gap:9px;align-items:flex-start;}
.footer-contact i{margin-top:4px;color:var(--lime-400);font-size:13px;}
.footer-bottom{
  margin-top:46px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-links a{color:rgba(255,255,255,.5);font-size:13px;}
.footer-links a:hover{color:var(--accent-600);}

/* ---------- offcanvas ---------- */
.site-drawer{width:84vw;max-width:360px;background:var(--bg);}
.site-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:16px 20px;}
.site-drawer .offcanvas-body{padding:8px 0 20px;display:flex;flex-direction:column;}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-link{
  display:flex;align-items:center;height:52px;padding:0 20px;font-size:16px;font-weight:500;
  color:var(--brand-700);border-bottom:1px solid var(--line);
}
.drawer-link:hover{background:var(--brand-100);color:var(--brand-900);}
.drawer-link.active{font-weight:700;color:var(--brand-900);box-shadow:inset 3px 0 0 var(--accent-600);}
.drawer-cta{margin-top:auto;padding:20px;}
.btn-close:focus{box-shadow:none;}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .main-nav .nav-link{padding:8px 9px;font-size:14.5px;}
  .banner-inner h1{font-size:36px;}
  .def-grid{gap:0 32px;}
}
@media (max-width:991.98px){
  .container-xl{padding-left:24px;padding-right:24px;}
  .section{padding:72px 0;}
  .section-head h2{font-size:29px;}
  .sec-title-sticky h2{font-size:27px;}
  .page-banner{aspect-ratio:16/7;}
  .banner-inner{padding:32px 30px;}
  .banner-inner h1{font-size:32px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
  .cta-band{padding:36px 32px;}
  .cta-band h2{font-size:24px;}
}
@media (max-width:767.98px){
  .container-xl{padding-left:20px;padding-right:20px;}
  body{font-size:16px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .section-head{margin-bottom:32px;}
  .section-head h2{font-size:26px;}
  .sec-title-sticky h2{font-size:24px;}
  .page-banner{aspect-ratio:auto;min-height:330px;}
  .banner-inner{padding:26px 22px;}
  .banner-inner h1{font-size:29px;line-height:1.3;}
  .banner-inner p{font-size:15px;}
  .banner-actions .btn-accent,.banner-actions .btn-light-ghost{width:100%;}
  .def-grid{grid-template-columns:1fr;gap:0;}
  .cta-band{padding:30px 22px;border-radius:14px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-accent,.cta-actions .btn-light-ghost{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;gap:10px;}
  .faq-accordion .accordion-body{padding-right:20px;}
  .metric-num{font-size:32px;}
}
@media (max-width:519.98px){
  .banner-inner h1{font-size:26px;}
  .section-head h2{font-size:23px;}
  .spec-accordion .accordion-button{font-size:16px;padding:17px 18px;}
  .spec-accordion .accordion-body{padding:2px 18px 20px;}
  .faq-accordion .accordion-button{font-size:16px;padding:18px 40px 18px 16px;}
  .faq-accordion .accordion-body{padding:0 16px 20px 16px;}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category3 */
:root{
  --brand-900:#0B2E2A;
  --brand-700:#10403A;
  --brand-100:#E7F0EC;
  --accent-600:#E4572E;
  --accent-600-hover:#C8451F;
  --lime-400:#B9D94C;
  --ink:#22262B;
  --ink-2:#5A6360;
  --line:#E3E1DA;
  --surface:#FFFFFF;
  --bg:#FBFAF7;
  --bg-alt:#F4F2EC;
  --ok:#2F855A;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(16,64,58,.06);
  --shadow-2:0 10px 24px rgba(16,64,58,.12);
  --maxw:1200px;
  --nav-h:64px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease-out;}
a:hover{color:var(--accent-600);}
h1,h2,h3,h4{color:var(--brand-700);margin:0;font-weight:700;letter-spacing:.2px;}
h1{font-size:clamp(30px,4.2vw,48px);line-height:1.22;}
h2{font-size:clamp(25px,3vw,36px);line-height:1.3;}
h3{font-size:24px;line-height:1.4;}
h4{font-size:19px;line-height:1.5;}
p{margin:0 0 1.15em;max-width:740px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px;}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand-900);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:2000;}
.skip-link:focus{left:0;color:#fff;}

.container-xl{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px;}
@media (min-width:1400px){.container-xl{max-width:1280px;}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);font-weight:600;font-size:15px;
  padding:12px 22px;line-height:1.2;border:1px solid transparent;
  transition:transform .2s ease-out,background-color .2s ease-out,color .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.btn-primary,.btn-primary:focus,.btn-primary:active{
  --bs-btn-bg:var(--accent-600);
  --bs-btn-border-color:var(--accent-600);
  --bs-btn-hover-bg:var(--accent-600-hover);
  --bs-btn-hover-border-color:var(--accent-600-hover);
  --bs-btn-active-bg:var(--accent-600-hover);
  --bs-btn-active-border-color:var(--accent-600-hover);
  --bs-btn-color:#fff;--bs-btn-hover-color:#fff;--bs-btn-active-color:#fff;
  --bs-btn-focus-shadow-rgb:228,87,46;
  --bs-btn-border-radius:var(--radius-btn);
  --bs-btn-padding-y:12px;--bs-btn-padding-x:22px;--bs-btn-font-size:15px;--bs-btn-font-weight:600;
  color:#fff;background-color:var(--accent-600);border-color:var(--accent-600);
  box-shadow:0 2px 6px rgba(228,87,46,.22);
}
.btn-primary:hover{background-color:var(--accent-600-hover);border-color:var(--accent-600-hover);color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(228,87,46,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 6px rgba(228,87,46,.22);}
.btn-outline{
  color:var(--brand-700);border:1px solid var(--brand-700);background:transparent;
}
.btn-outline:hover{background:var(--brand-100);color:var(--brand-900);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(0);}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:9px;}
.btn-lg{padding:14px 28px;font-size:16px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand-700);}
.link-arrow i{transition:transform .2s ease-out;}
.link-arrow:hover i{transform:translateX(4px);}

.badge-soft{
  display:inline-block;padding:4px 12px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-700);
  font-size:13px;font-weight:600;line-height:1.6;
}
.badge-lime{
  display:inline-block;padding:4px 12px;border-radius:999px;
  background:var(--lime-400);color:var(--brand-900);
  font-size:13px;font-weight:600;line-height:1.6;
}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  transition:background-color .24s ease-out,border-color .24s ease-out,box-shadow .24s ease-out;
}
.site-header.is-scrolled{
  background:rgba(251,250,247,.88);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom-color:#D8D5CC;
  box-shadow:0 4px 18px rgba(16,64,58,.06);
}
.header-inner{
  display:flex;align-items:center;gap:24px;
  height:var(--nav-h);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--brand-900);color:#fff;
  display:grid;place-items:center;
  font-weight:700;font-size:16px;letter-spacing:.5px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:16px;color:var(--brand-700);font-weight:700;letter-spacing:.3px;}
.brand-text em{font-style:normal;font-size:11px;color:var(--ink-2);letter-spacing:2px;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px;}
.main-nav .nav-link{
  position:relative;
  color:var(--brand-700);
  font-size:15px;font-weight:500;
  padding:10px 12px;border-radius:8px;
  white-space:nowrap;
  transition:color .2s ease-out,background-color .2s ease-out;
}
.main-nav .nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--accent-600);transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease-out;
}
.main-nav .nav-link:hover{color:var(--accent-600);}
.main-nav .nav-link:hover::after{transform:scaleX(1);}
.main-nav .nav-link.active{color:var(--brand-900);font-weight:700;}
.main-nav .nav-link.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--brand-700);
  display:inline-flex;align-items:center;justify-content:center;
  transition:background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out,transform .2s ease-out;
}
.icon-btn:hover{background:var(--brand-100);color:var(--brand-900);border-color:#CFE0D8;transform:translateY(-1px);}
.menu-toggle{
  width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--brand-700);display:inline-flex;align-items:center;justify-content:center;
}
.menu-toggle:hover{background:var(--brand-100);color:var(--brand-900);}

.header-search{
  border-top:1px solid var(--line);
  background:var(--bg-alt);
  padding:14px 0;
}
.search-form{display:flex;gap:10px;max-width:640px;}
.search-form input{
  flex:1;border:1px solid var(--line);border-radius:var(--radius-btn);
  padding:11px 14px;font-size:15px;background:#fff;color:var(--ink);
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.search-form input:focus{outline:none;border-color:var(--brand-700);box-shadow:0 0 0 3px rgba(16,64,58,.12);}
.search-form input::placeholder{color:#9AA29E;}

/* 移动端抽屉 */
.offcanvas.offcanvas-end{width:84vw;max-width:360px;background:var(--bg);}
.offcanvas-header{border-bottom:1px solid var(--line);padding:16px 20px;height:var(--nav-h);}
.offcanvas-body{padding:0;display:flex;flex-direction:column;}
.drawer-nav{padding:8px 0;flex:1;}
.drawer-nav a{
  display:flex;align-items:center;height:52px;padding:0 20px;
  color:var(--brand-700);font-size:16px;border-bottom:1px solid var(--line);
  transition:background-color .2s ease-out,color .2s ease-out;
}
.drawer-nav a:hover,.drawer-nav a.active{background:var(--brand-100);color:var(--brand-900);font-weight:600;}
.drawer-nav a.active{border-left:3px solid var(--accent-600);padding-left:17px;}
.drawer-cta{padding:16px 20px;border-top:1px solid var(--line);}
.drawer-cta .btn{width:100%;}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{
  background:var(--bg-alt);
  border-bottom:1px solid var(--line);
  padding:12px 0;
}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--ink-2);}
.crumb a{color:var(--ink-2);}
.crumb a:hover{color:var(--brand-700);}
.crumb .sep{color:#B6BDBA;}
.crumb .current{color:var(--brand-700);font-weight:600;}

/* ---------- 章节 ---------- */
.section{padding:96px 0;}
.section-alt{background:var(--bg-alt);}
.section-green{background:var(--brand-100);}
.section-head{margin-bottom:48px;max-width:820px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:1px;color:var(--accent-600);
  text-transform:uppercase;margin-bottom:14px;
}
.section-head .eyebrow::before{content:"";width:22px;height:2px;background:var(--accent-600);}
.section-head h2{margin-bottom:14px;}
.section-lead{font-size:16px;color:var(--ink-2);max-width:720px;line-height:1.8;}

/* ---------- 分类页 Hero ---------- */
.page-hero{
  padding:64px 0 72px;
  background:
    radial-gradient(1000px 420px at 88% -10%,rgba(185,217,76,.20),transparent 62%),
    linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
}
.hero-grid{
  display:grid;grid-template-columns:1.08fr .92fr;
  gap:56px;align-items:center;
}
.hero-title{margin-bottom:18px;max-width:640px;}
.hero-sub{font-size:17px;color:var(--ink-2);line-height:1.85;max-width:620px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-points{display:flex;flex-wrap:wrap;gap:36px;border-top:1px solid var(--line);padding-top:22px;}
.hero-points .pt{display:flex;flex-direction:column;gap:2px;}
.hero-points .pt b{
  font-size:26px;font-weight:700;color:var(--accent-600);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.hero-points .pt span{font-size:13px;color:var(--ink-2);}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-img);
  border:1px solid var(--line);
  box-shadow:var(--shadow-2);
}
.hero-media .media-tag{
  position:absolute;left:18px;bottom:18px;
  background:rgba(11,46,42,.9);color:#fff;
  border-radius:999px;padding:7px 16px;font-size:13px;font-weight:600;
  display:inline-flex;align-items:center;gap:8px;
}
.hero-media .media-tag i{color:var(--lime-400);}
.hero-steps{
  display:flex;flex-wrap:wrap;gap:10px;
  margin-top:38px;
}
.hero-steps a{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid var(--line);background:#fff;border-radius:999px;
  padding:8px 16px;font-size:13px;font-weight:600;color:var(--brand-700);
  transition:border-color .2s ease-out,color .2s ease-out,background-color .2s ease-out,transform .2s ease-out;
}
.hero-steps a span{
  font-variant-numeric:tabular-nums;color:var(--accent-600);font-weight:700;
}
.hero-steps a:hover{border-color:var(--accent-600);color:var(--accent-600);transform:translateY(-2px);background:#fff;}

/* ---------- 时间线 ---------- */
.timeline{position:relative;}
.tl-item{
  display:grid;grid-template-columns:78px minmax(0,1fr);
  padding-bottom:36px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-axis{position:relative;}
.tl-axis::after{
  content:"";position:absolute;left:50%;top:60px;bottom:-36px;
  width:3px;background:var(--brand-100);transform:translateX(-50%);
}
.tl-item:last-child .tl-axis::after{display:none;}
.tl-num{
  position:relative;z-index:1;
  width:54px;height:54px;border-radius:14px;
  background:var(--brand-900);color:#fff;
  display:grid;place-items:center;
  font-size:18px;font-weight:700;font-variant-numeric:tabular-nums;
}
.tl-body{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 28px;
  box-shadow:var(--shadow-1);
  transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
}
.tl-body:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D6E3DD;}
.tl-body h3{font-size:21px;margin-bottom:10px;}
.tl-body p{font-size:16px;color:var(--ink-2);max-width:660px;}
.tl-points{margin:14px 0 18px;display:grid;gap:8px;}
.tl-points li{
  position:relative;padding-left:18px;font-size:15px;color:var(--ink);
}
.tl-points li::before{
  content:"";position:absolute;left:0;top:11px;
  width:7px;height:7px;border-radius:2px;background:var(--lime-400);
}
.tl-thumb{margin:0;max-width:420px;}
.tl-thumb img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--radius-img);border:1px solid var(--line);
}
.tl-thumb figcaption{font-size:13px;color:var(--ink-2);margin-top:8px;line-height:1.6;}

/* ---------- 数据字段卡片 ---------- */
.field-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.field-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 28px;box-shadow:var(--shadow-1);display:flex;gap:20px;
  transition:transform .22s ease-out,box-shadow .22s ease-out;
}
.field-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.field-index{
  flex-shrink:0;width:46px;height:46px;border-radius:12px;
  background:var(--brand-100);color:var(--brand-700);
  display:grid;place-items:center;font-weight:700;font-variant-numeric:tabular-nums;
}
.field-card h3{font-size:19px;margin-bottom:8px;}
.field-card p{font-size:15px;color:var(--ink-2);line-height:1.8;margin:0;}
.field-card .field-meta{
  display:inline-block;margin-top:12px;font-size:13px;font-weight:600;color:var(--accent-600);
}

/* ---------- 对比表 ---------- */
.table-scroll{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--surface);
  box-shadow:var(--shadow-1);
}
.table-scroll::-webkit-scrollbar{height:8px;}
.table-scroll::-webkit-scrollbar-thumb{background:#CFD6D2;border-radius:8px;}
.data-table{width:100%;min-width:760px;border-collapse:separate;border-spacing:0;font-size:15px;}
.data-table thead th{
  background:var(--brand-100);color:var(--brand-700);
  font-weight:600;font-size:14px;text-align:left;
  padding:16px 20px;border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.data-table tbody td{
  padding:16px 20px;height:44px;color:var(--ink);
  border-bottom:1px solid var(--line);vertical-align:top;line-height:1.75;
}
.data-table tbody tr:nth-child(even) td{background:var(--bg-alt);}
.data-table tbody tr:last-child td{border-bottom:none;}
.data-table .cell-strong{font-weight:600;color:var(--brand-900);}
.data-table .num{font-variant-numeric:tabular-nums;font-weight:600;}
.table-note{font-size:13px;color:var(--ink-2);margin-top:14px;}

/* ---------- FAQ ---------- */
.faq-acc .accordion-item{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--surface);margin-bottom:14px;overflow:hidden;
  box-shadow:var(--shadow-1);
}
.faq-acc .accordion-item:last-child{margin-bottom:0;}
.faq-acc .accordion-button{
  position:relative;
  width:100%;background:#fff;color:var(--brand-700);
  font-size:17px;font-weight:700;line-height:1.6;
  padding:20px 60px 20px 22px;
  border-left:3px solid transparent;
  box-shadow:none;border-radius:0;
}
.faq-acc .accordion-button:not(.collapsed){
  background:var(--brand-100);
  border-left-color:var(--accent-600);
  color:var(--brand-900);
}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:transparent;border-left-color:var(--accent-600);}
.faq-acc .accordion-button::after{
  content:"+";
  background-image:none!important;
  position:absolute;right:22px;top:50%;transform:translateY(-50%);
  width:auto;height:auto;
  font-size:22px;font-weight:600;color:var(--accent-600);line-height:1;
  transition:color .2s ease-out;
}
.faq-acc .accordion-button:not(.collapsed)::after{content:"−";transform:translateY(-50%);}
.faq-acc .accordion-body{
  padding:6px 24px 24px 22px;
  font-size:15px;line-height:1.8;color:var(--ink-2);
  border-left:3px solid var(--accent-600);
}
.faq-acc .accordion-body p{max-width:720px;}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:var(--brand-900);
  padding:64px 0;
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
}
.cta-inner h2{color:#fff;font-size:clamp(24px,2.6vw,32px);margin-bottom:10px;}
.cta-inner p{color:rgba(255,255,255,.76);font-size:16px;margin:0;max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-band .btn-outline-light-c{
  color:#fff;border:1px solid rgba(255,255,255,.45);background:transparent;
  border-radius:var(--radius-btn);padding:12px 22px;font-weight:600;font-size:15px;
  transition:background-color .2s ease-out,border-color .2s ease-out,transform .2s ease-out;
}
.cta-band .btn-outline-light-c:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;transform:translateY(-2px);}

/* ---------- 互链卡 ---------- */
.cross-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.cross-card{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 26px;box-shadow:var(--shadow-1);
  transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
}
.cross-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D6E3DD;}
.cross-card h3{font-size:18px;margin-bottom:6px;}
.cross-card p{font-size:14px;color:var(--ink-2);margin:0;line-height:1.7;max-width:100%;}
.cross-card i.arrow{
  flex-shrink:0;width:38px;height:38px;border-radius:10px;
  background:var(--brand-100);color:var(--brand-700);
  display:grid;place-items:center;font-size:14px;
  transition:background-color .2s ease-out,color .2s ease-out,transform .2s ease-out;
}
.cross-card:hover i.arrow{background:var(--accent-600);color:#fff;transform:translateX(3px);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.78);padding:72px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;
  padding-bottom:48px;
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);color:#fff;}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text em{color:rgba(255,255,255,.6);}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);max-width:380px;margin-bottom:12px;}
.site-footer h4{
  color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;letter-spacing:.4px;
}
.footer-list{display:grid;gap:10px;}
.footer-list li{font-size:14px;line-height:1.7;}
.footer-list a{color:rgba(255,255,255,.72);}
.footer-list a:hover{color:var(--accent-600);}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;}
.footer-contact i{color:var(--lime-400);margin-top:5px;font-size:13px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-links{display:flex;flex-wrap:wrap;gap:18px;}
.footer-links a{color:rgba(255,255,255,.6);font-size:13px;}
.footer-links a:hover{color:var(--accent-600);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero-grid{gap:40px;}
  .main-nav .nav-link{padding:10px 9px;font-size:14px;}
  .field-grid{gap:20px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-brand{grid-column:span 3;}
}
@media (max-width:991px){
  .section{padding:72px 0;}
  .page-hero{padding:48px 0 56px;}
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .hero-media img{aspect-ratio:16/9;}
  .hero-media{order:2;}
  .field-grid{grid-template-columns:1fr;}
  .cross-grid{grid-template-columns:1fr;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-brand{grid-column:span 2;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container-xl{padding:0 20px;}
  .section{padding:56px 0;}
  .page-hero{padding:36px 0 48px;}
  .hero-sub{font-size:16px;}
  .hero-points{gap:24px;}
  .hero-points .pt b{font-size:22px;}
  .tl-item{grid-template-columns:1fr;padding-bottom:28px;}
  .tl-axis{display:flex;align-items:center;gap:14px;margin-bottom:14px;}
  .tl-axis::after{display:none;}
  .tl-num{width:44px;height:44px;border-radius:12px;font-size:16px;}
  .tl-body{padding:20px 18px;}
  .field-card{flex-direction:column;padding:20px 18px;gap:14px;}
  .cross-card{padding:20px 18px;}
  .cta-band{padding:48px 0;}
  .cta-actions{width:100%;}
  .cta-actions .btn,.cta-actions .btn-outline-light-c{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-brand{grid-column:span 1;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px;}
  .faq-acc .accordion-button{font-size:16px;padding:18px 54px 18px 18px;}
}
@media (max-width:520px){
  .search-form{flex-direction:column;}
  .search-form .btn{width:100%;}
  .hero-steps{gap:8px;}
  .hero-steps a{font-size:12px;padding:7px 12px;}
  .table-note{font-size:12px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category4 */
:root{
  --brand-900:#0B2E2A;
  --brand-700:#10403A;
  --brand-100:#E7F0EC;
  --accent-600:#E4572E;
  --accent-600-hover:#C8451F;
  --lime-400:#B9D94C;
  --ink:#22262B;
  --ink-2:#5A6360;
  --line:#E3E1DA;
  --surface:#FFFFFF;
  --bg:#FBFAF7;
  --bg-alt:#F4F2EC;
  --success:#2F855A;
  --warn:#B7791F;
  --error:#C0392B;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-1:0 1px 2px rgba(16,64,58,.06);
  --shadow-2:0 10px 24px rgba(16,64,58,.12);
  --t:200ms ease-out;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--accent-600);}
h1,h2,h3,h4{color:var(--brand-700);margin:0;font-weight:700;letter-spacing:-.01em;}
h1{font-size:clamp(30px,4vw,46px);line-height:1.22;}
h2{font-size:clamp(26px,3vw,36px);line-height:1.3;}
h3{font-size:24px;line-height:1.4;}
h4{font-size:19px;line-height:1.5;}
p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px;}
.num{font-variant-numeric:tabular-nums;font-weight:600;}

.container-xl{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
@media (min-width:1400px){
  .container-xl{max-width:1280px;}
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(251,250,247,.94);
  border-bottom:1px solid var(--line);
  transition:background var(--t),box-shadow var(--t),border-color var(--t);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);
  border-bottom-color:#DAD7CD;
  box-shadow:0 6px 20px rgba(16,64,58,.06);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:64px;
}
.header-left{display:flex;align-items:center;gap:34px;min-width:0;}
.header-right{display:flex;align-items:center;gap:12px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:9px;
  background:var(--brand-900);
  color:#fff;font-weight:700;font-size:17px;
  display:inline-flex;align-items:center;justify-content:center;
  letter-spacing:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:16px;color:var(--brand-900);letter-spacing:.01em;}
.brand-text em{font-style:normal;font-size:11px;color:var(--ink-2);letter-spacing:.18em;}
.main-nav{display:flex;align-items:center;gap:26px;}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--brand-700);
  padding:6px 0;
  white-space:nowrap;
  transition:color var(--t);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;background:var(--accent-600);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--t);
}
.nav-link:hover{color:var(--accent-600);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand-900);font-weight:700;}
.nav-link.active::after{transform:scaleX(1);}
.icon-btn{
  width:38px;height:38px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:var(--surface);
  color:var(--brand-700);
  display:inline-flex;align-items:center;justify-content:center;
  transition:all var(--t);
}
.icon-btn:hover{border-color:var(--brand-700);color:var(--accent-600);}
.menu-btn{
  width:40px;height:40px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:var(--surface);
  color:var(--brand-700);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:17px;
}

/* ---------- 按钮 ---------- */
.btn-main,.btn-ghost,.btn-linkarrow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;
  border-radius:var(--r-btn);
  padding:12px 22px;
  border:1px solid transparent;
  cursor:pointer;
  transition:all var(--t);
}
.btn-main{background:var(--accent-600);color:#fff;box-shadow:0 2px 8px rgba(228,87,46,.24);}
.btn-main:hover{background:var(--accent-600-hover);color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(228,87,46,.28);}
.btn-main:active{transform:translateY(0);box-shadow:0 2px 6px rgba(228,87,46,.22);}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:var(--brand-700);}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-900);border-color:var(--brand-900);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-linkarrow{
  padding:0;border:none;background:none;
  color:var(--brand-700);font-weight:600;
}
.btn-linkarrow i{transition:transform var(--t);font-size:13px;}
.btn-linkarrow:hover{color:var(--accent-600);}
.btn-linkarrow:hover i{transform:translateX(6px);}

/* ---------- 徽章 / 标签 ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand-100);color:var(--brand-700);
  font-size:13px;font-weight:600;
  padding:5px 12px;border-radius:999px;
}
.badge-lime{
  display:inline-flex;align-items:center;
  background:var(--lime-400);color:#1E2A17;
  font-size:13px;font-weight:600;
  padding:5px 12px;border-radius:999px;
}
.badge-dot{
  width:7px;height:7px;border-radius:50%;background:var(--accent-600);
  display:inline-block;
}

/* ---------- 面包屑 ---------- */
.breadcrumb-line{
  font-size:13px;color:var(--ink-2);
  padding:22px 0 0;
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
}
.breadcrumb-line a{color:var(--ink-2);}
.breadcrumb-line a:hover{color:var(--brand-700);}
.breadcrumb-line span.sep{color:#B9B5A9;}

/* ---------- Hero ---------- */
.hero{
  padding-bottom:88px;
  background:
    radial-gradient(900px 420px at 88% -10%,rgba(185,217,76,.16),transparent 62%),
    linear-gradient(180deg,#FBFAF7 0%,#F4F2EC 100%);
}
.hero-grid{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:56px;
  align-items:center;
  padding-top:44px;
}
.hero-media{position:relative;}
.hero-media img{
  width:100%;
  aspect-ratio:4/5;
  object-fit:cover;
  border-radius:var(--r-img);
  box-shadow:var(--shadow-2);
}
.hero-media .hero-tag{
  position:absolute;left:18px;bottom:18px;
  background:rgba(11,46,42,.86);
  color:#fff;font-size:13px;font-weight:600;
  padding:8px 14px;border-radius:999px;
  backdrop-filter:blur(4px);
}
.hero-copy .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-700);
  background:var(--brand-100);
  padding:6px 14px;border-radius:999px;
  margin-bottom:20px;
}
.hero-copy h1{margin-bottom:18px;}
.hero-copy .lede{
  font-size:17px;line-height:1.85;color:var(--ink-2);
  max-width:640px;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:18px;
  border-top:1px solid var(--line);
  padding-top:24px;
}
.hero-stats .stat-num{
  font-size:28px;font-weight:700;color:var(--accent-600);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.hero-stats .stat-num.lime{color:#7E9A20;}
.hero-stats .stat-label{font-size:13px;color:var(--ink-2);line-height:1.6;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-alt{background:var(--bg-alt);}
.section-head{max-width:740px;margin-bottom:48px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head .kicker{
  font-size:13px;font-weight:600;letter-spacing:.16em;
  color:var(--accent-600);text-transform:uppercase;
  margin-bottom:12px;display:block;
}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--ink-2);font-size:16px;margin-bottom:0;}

/* 价值条纹 */
.value-band{
  background:var(--brand-100);
  border-left:3px solid var(--accent-600);
  border-radius:var(--r-card);
  padding:26px 32px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.value-band .vb-item{
  font-size:15px;color:var(--brand-900);font-weight:600;
  padding-left:18px;border-left:1px solid rgba(16,64,58,.16);
  line-height:1.7;
}
.value-band .vb-item:first-child{border-left:none;padding-left:0;}
.value-band .vb-item small{
  display:block;font-weight:400;font-size:13px;color:var(--ink-2);margin-top:4px;
}

/* 图文对照 */
.split{display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:center;}
.split-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-img);box-shadow:var(--shadow-1);
}
.split-copy h3{margin-bottom:14px;}
.split-copy p{color:var(--ink-2);}
.point-list{margin-top:22px;}
.point-list li{
  display:flex;gap:14px;
  padding:14px 0;
  border-top:1px solid var(--line);
}
.point-list li:last-child{border-bottom:1px solid var(--line);}
.point-list .p-num{
  flex:0 0 30px;height:30px;border-radius:8px;
  background:var(--brand-100);color:var(--brand-700);
  font-size:13px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;
  margin-top:2px;
}
.point-list .p-body strong{display:block;font-size:16px;color:var(--brand-900);margin-bottom:2px;}
.point-list .p-body span{font-size:14.5px;color:var(--ink-2);line-height:1.75;}

/* 异常类型卡片 */
.issue-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.issue-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px;
  box-shadow:var(--shadow-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.issue-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D3D0C4;}
.issue-card .ic-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.issue-card .ic-icon{
  width:42px;height:42px;border-radius:11px;
  background:var(--brand-100);color:var(--brand-700);
  display:inline-flex;align-items:center;justify-content:center;font-size:17px;
}
.issue-card h4{margin-bottom:10px;color:var(--brand-900);}
.issue-card p{font-size:14.5px;color:var(--ink-2);line-height:1.78;margin-bottom:14px;}
.issue-card .ic-meta{font-size:13px;color:var(--ink-2);border-top:1px dashed var(--line);padding-top:12px;}
.issue-card .ic-meta b{color:var(--accent-600);font-weight:600;}

/* 处理流程 */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.flow-step{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 24px;
  position:relative;
  box-shadow:var(--shadow-1);
  transition:transform var(--t),box-shadow var(--t);
}
.flow-step:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.flow-step .fs-num{
  font-size:34px;font-weight:700;color:var(--brand-100);
  line-height:1;margin-bottom:14px;font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.flow-step h4{margin-bottom:10px;font-size:18px;}
.flow-step p{font-size:14.5px;color:var(--ink-2);line-height:1.78;margin-bottom:0;}

/* 图片置顶 + 表格 */
.table-figure{
  border-radius:var(--r-img);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  margin-bottom:36px;
}
.table-figure img{width:100%;aspect-ratio:16/6;object-fit:cover;}
.table-wrap{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow-x:auto;
  box-shadow:var(--shadow-1);
}
.spec-table{width:100%;border-collapse:collapse;min-width:720px;}
.spec-table thead th{
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:14px;font-weight:600;
  text-align:left;
  padding:14px 20px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.spec-table tbody td{
  padding:14px 20px;
  border-bottom:1px solid var(--line);
  font-size:15px;color:var(--ink);
  vertical-align:top;
}
.spec-table tbody tr:nth-child(even){background:var(--bg-alt);}
.spec-table tbody tr:last-child td{border-bottom:none;}
.spec-table td .tag-time{color:var(--accent-600);font-weight:600;font-variant-numeric:tabular-nums;}

/* FAQ */
.faq-accordion .accordion-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  margin-bottom:14px;
  overflow:hidden;
  box-shadow:var(--shadow-1);
}
.faq-accordion .accordion-button{
  font-size:17px;font-weight:700;color:var(--brand-900);
  background:var(--surface);
  padding:20px 24px 20px 26px;
  box-shadow:none;
  border-left:3px solid transparent;
  transition:all var(--t);
}
.faq-accordion .accordion-button:not(.collapsed){
  color:var(--brand-900);
  background:#FCFBF8;
  border-left-color:var(--accent-600);
}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:none;}
.faq-accordion .accordion-button::after{
  background-image:none;
  content:"+";
  font-size:22px;font-weight:400;color:var(--accent-600);
  width:22px;height:22px;line-height:20px;text-align:center;
  transform:none;
  transition:transform var(--t);
}
.faq-accordion .accordion-button:not(.collapsed)::after{content:"–";transform:none;}
.faq-accordion .accordion-body{
  padding:0 26px 22px 26px;
  font-size:15px;line-height:1.8;color:var(--ink-2);
}

/* CTA 带 */
.cta-band{
  background:var(--brand-900);
  border-radius:var(--r-card);
  padding:46px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  color:#fff;
}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.72);font-size:15px;margin-bottom:0;max-width:560px;}
.cta-band .cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex-shrink:0;}
.cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.5);}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}

/* 互链卡 */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.rel-card{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px 24px;
  box-shadow:var(--shadow-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D3D0C4;}
.rel-card .rc-title{font-size:17px;font-weight:700;color:var(--brand-900);margin-bottom:6px;}
.rel-card .rc-desc{font-size:13.5px;color:var(--ink-2);line-height:1.7;}
.rel-card i{color:var(--accent-600);font-size:16px;transition:transform var(--t);flex-shrink:0;}
.rel-card:hover i{transform:translateX(5px);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--brand-900);
  color:rgba(255,255,255,.78);
  padding:72px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:48px;
  border-bottom:1px solid rgba(255,255,255,.14);
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);color:#fff;}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text em{color:rgba(255,255,255,.6);}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);margin-bottom:14px;}
.site-footer h4{
  color:#fff;font-size:15px;font-weight:600;
  margin-bottom:18px;letter-spacing:.02em;
}
.footer-list li{margin-bottom:11px;}
.footer-list a{color:rgba(255,255,255,.72);font-size:14px;}
.footer-list a:hover{color:var(--accent-600);}
.footer-contact li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;color:rgba(255,255,255,.72);margin-bottom:12px;
}
.footer-contact i{color:var(--lime-400);margin-top:4px;font-size:13px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0 26px;
  font-size:13px;color:rgba(255,255,255,.55);
  flex-wrap:wrap;
}
.footer-links{display:flex;gap:20px;flex-wrap:wrap;}
.footer-links a{color:rgba(255,255,255,.6);font-size:13px;}
.footer-links a:hover{color:var(--accent-600);}

/* ---------- 移动端抽屉 ---------- */
.offcanvas.mobile-drawer{
  width:84vw;max-width:340px;
  background:var(--bg);
  border-left:1px solid var(--line);
}
.mobile-drawer .offcanvas-header{
  border-bottom:1px solid var(--line);
  padding:16px 20px;
}
.mobile-drawer .offcanvas-body{padding:0;}
.mobile-drawer .m-nav-link{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;padding:0 20px;
  font-size:15px;color:var(--brand-700);
  border-bottom:1px solid var(--line);
}
.mobile-drawer .m-nav-link.active{
  color:var(--brand-900);font-weight:700;
  background:var(--brand-100);
}
.mobile-drawer .m-nav-link i{font-size:12px;color:var(--ink-2);}
.mobile-drawer .drawer-cta{
  padding:16px 20px;
  border-top:1px solid var(--line);
  background:var(--surface);
}
.btn-close-custom{
  border:none;background:none;color:var(--ink-2);font-size:19px;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .container-xl{padding-left:28px;padding-right:28px;}
  .hero-grid{gap:40px;}
  .issue-grid{grid-template-columns:repeat(2,1fr);}
  .flow-grid{grid-template-columns:repeat(2,1fr);}
  .value-band{grid-template-columns:repeat(2,1fr);gap:20px;}
  .value-band .vb-item:nth-child(3){border-left:none;padding-left:0;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:34px;}
  .footer-grid > div:last-child{grid-column:span 3;}
}
@media (max-width:991.98px){
  .section{padding:72px 0;}
  .hero{padding-bottom:64px;}
  .hero-grid{grid-template-columns:1fr;gap:34px;padding-top:30px;}
  .hero-media{order:2;}
  .hero-copy{order:1;}
  .hero-media img{aspect-ratio:16/10;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split.reverse .split-media{order:2;}
  .split.reverse .split-copy{order:1;}
  .rel-grid{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:38px 30px;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .container-xl{padding-left:20px;padding-right:20px;}
  .section{padding:56px 0;}
  .hero{padding-bottom:56px;}
  h1{font-size:clamp(28px,7vw,34px);}
  h2{font-size:24px;}
  h3{font-size:20px;}
  .hero-copy .lede{font-size:16px;}
  .hero-stats{grid-template-columns:1fr;gap:14px;}
  .hero-stats .stat-item{display:flex;align-items:baseline;gap:12px;}
  .hero-stats .stat-num{font-size:22px;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;}
  .value-band{grid-template-columns:1fr;padding:22px;}
  .value-band .vb-item{border-left:none;padding-left:0;border-top:1px solid rgba(16,64,58,.14);padding-top:14px;}
  .value-band .vb-item:first-child{border-top:none;padding-top:0;}
  .issue-grid{grid-template-columns:1fr;}
  .flow-grid{grid-template-columns:1fr;}
  .section-head{margin-bottom:32px;}
  .table-figure img{aspect-ratio:16/9;}
  .cta-band{padding:32px 22px;border-radius:12px;}
  .cta-band h2{font-size:22px;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .cta-actions .btn-main,
  .cta-band .cta-actions .btn-ghost{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:34px;}
  .footer-grid > div:last-child{grid-column:auto;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .rel-scroll{
    display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;
    padding-bottom:8px;margin:0 -20px;padding-left:20px;padding-right:20px;
  }
  .rel-scroll .rel-card{min-width:82%;scroll-snap-align:start;}
}
@media (max-width:519.98px){
  .brand-text strong{font-size:15px;}
  .hero-copy .eyebrow{font-size:12px;padding:5px 12px;}
  .flow-step,.issue-card{padding:20px 18px;}
  .offcanvas.mobile-drawer{width:88vw;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
}