/* roulang page: index */
:root{
  --ink:#155A56;
  --ink-deep:#0C3535;
  --copper:#B46A34;
  --copper-dark:#8F4E26;
  --paper:#F7F5F1;
  --card:#FFFFFF;
  --text:#243134;
  --muted:#667576;
  --line:#E5E0D7;
  --line-soft:#ECE7DE;
  --copper-soft:#F3E4D8;
  --teal-soft:#DDE8E5;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:8px;
  --shadow:0 1px 2px rgba(0,0,0,.04),0 4px 16px rgba(0,0,0,.05);
  --shadow-hover:0 4px 10px rgba(0,0,0,.06),0 12px 28px rgba(0,0,0,.09);
  --serif:"Noto Serif CJK SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans CJK SC","Microsoft YaHei","Segoe UI",sans-serif;
  --side-w:248px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  padding-left:var(--side-w);
  background:var(--paper);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none;transition:color .18s ease,border-color .18s ease,background .18s ease}
a:hover{color:var(--copper)}
button,input,select,textarea{font:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;padding:0}
ul,ol{list-style:none}
h1,h2,h3,h4{font-family:var(--serif);line-height:1.35}
h1{font-size:clamp(30px,3.5vw,46px);letter-spacing:.01em}
h2{font-size:clamp(24px,2.4vw,32px)}
h3{font-size:20px}
p{line-height:1.75}
::-moz-selection{background:rgba(180,106,52,.2)}
::selection{background:rgba(180,106,52,.2)}
[hidden]{display:none!important}

.skip-link{
  position:fixed;left:-999px;top:12px;z-index:9999;padding:10px 16px;
  background:var(--copper);color:#fff;border-radius:8px;
}
.skip-link:focus{left:12px}

.wrap{max-width:1180px;margin:0 auto;padding-left:clamp(18px,3vw,40px);padding-right:clamp(18px,3vw,40px)}
.section{padding:80px 0}
.section-tight{padding-top:48px;padding-bottom:48px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:5px 12px;border-radius:999px;
  background:var(--card);border:1px solid var(--line);color:var(--copper);
  font-size:13px;font-weight:600;letter-spacing:.04em;margin-bottom:16px;
}
.eyebrow.on-dark{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.24);color:#F8D8C4}
.lead{font-size:17px;color:var(--muted);line-height:1.8}
.text-link{
  display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--ink);
  border-bottom:1px solid transparent;
}
.text-link:hover{color:var(--copper);border-bottom-color:var(--copper)}
.text-link::after{content:"→";transition:transform .18s ease}
.text-link:hover::after{transform:translateX(4px)}

/* ===== 左侧竖向导航 ===== */
.sidebar{
  position:fixed;top:0;bottom:0;left:0;width:var(--side-w);background:var(--ink-deep);
  color:#F6F1E8;display:flex;flex-direction:column;z-index:1000;overflow-y:auto;
}
.sidebar-brand{
  padding:30px 22px 18px;border-bottom:1px solid rgba(255,255,255,.08);
}
.brand-block{display:flex;align-items:center;gap:12px}
.brand-mark{
  width:46px;height:46px;flex:0 0 46px;border:1px solid rgba(255,255,255,.32);
  border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-size:22px;color:#fff;background:rgba(255,255,255,.07);
}
.brand-text{display:flex;flex-direction:column;line-height:1.3}
.brand-text strong{font-size:17px;font-family:var(--serif);color:#fff;font-weight:700;letter-spacing:.02em}
.brand-text small{font-size:11px;color:rgba(255,255,255,.55);letter-spacing:.06em;margin-top:5px}

.sidebar-nav{flex:1;padding:18px 0}
.sidebar-nav ul>li+li{margin-top:2px}
.sidebar-nav a{
  display:flex;align-items:center;gap:10px;position:relative;
  padding:11px 22px 11px 24px;color:rgba(255,255,255,.68);
  font-size:15px;font-weight:500;border-left:3px solid transparent;

}
.sidebar-nav a::before{
  content:"";width:6px;height:6px;border-radius:2px;background:rgba(255,255,255,.18);
  flex:0 0 6px;transition:background .18s ease;
}
.sidebar-nav a:hover{background:rgba(255,255,255,.05);color:#fff}
.sidebar-nav a:hover::before{background:var(--copper)}
.sidebar-nav li.active a{
  color:#fff;background:linear-gradient(90deg,rgba(180,106,52,.16),rgba(180,106,52,.03));
  border-left-color:var(--copper);
}
.sidebar-nav li.active a::before{background:var(--copper);border-radius:50%}

.sidebar-foot{
  border-top:1px solid rgba(255,255,255,.08);padding:18px 22px 20px;
  font-size:13px;color:rgba(255,255,255,.5);line-height:1.65;
}
.sidebar-foot p{margin-bottom:12px}
.nav-help{
  display:flex;align-items:center;justify-content:space-between;width:100%;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  padding:8px 12px;border-radius:9px;color:#fff!important;font-size:13px;font-weight:600;
}
.nav-help:hover{background:rgba(180,106,52,.24);border-color:rgba(180,106,52,.4)}
.nav-help::after{content:"→";color:var(--copper)}

/* ===== 移动端顶部导航 ===== */
.mobile-topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:62px;z-index:1200;
  background:var(--ink-deep);align-items:center;justify-content:space-between;
  padding:0 18px;
}
.mobile-brand{font-family:var(--serif);color:#fff;font-weight:700;font-size:17px}
.mobile-burger{
  background:transparent;border:1px solid rgba(255,255,255,.18);border-radius:8px;
  width:42px;height:42px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.mobile-burger span{display:block;width:18px;height:2px;background:#F2EADF;border-radius:2px;transition:all .25s ease}
.mobile-burger.is-active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.mobile-burger.is-active span:nth-child(2){opacity:0}
.mobile-burger.is-active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-nav{
  display:none;position:fixed;top:62px;left:0;right:0;z-index:1190;background:var(--ink-deep);
  padding:10px 0 18px;box-shadow:0 10px 24px rgba(0,0,0,.22);
}
.mobile-nav.is-open{display:block}
.mobile-nav a{
  display:flex;align-items:center;gap:10px;padding:11px 22px;color:rgba(255,255,255,.78);
  font-size:15px;border-left:3px solid transparent;
}
.mobile-nav a::before{content:"";width:6px;height:6px;border-radius:2px;background:rgba(255,255,255,.2);flex:0 0 6px}
.mobile-nav a:hover{color:#fff;background:rgba(255,255,255,.06)}
.mobile-nav li.active a{color:#fff;border-left-color:var(--copper)}
.mobile-nav li.active a::before{background:var(--copper);transform:rotate(45deg)}

/* ===== 主内容 ===== */
.content-area{min-height:100vh;display:flex;flex-direction:column}
.main-content{flex:1}

/* Hero */
.hero{
  background:linear-gradient(118deg,#0C3535 0%,#155A56 56%,#1C6A5E 100%);
  color:#fff;position:relative;overflow:hidden;
}
.hero .wrap{padding-top:72px;padding-bottom:90px;position:relative;z-index:2}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  letter-spacing:.08em;color:#EDC6A9;background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.14);border-radius:999px;padding:6px 14px;margin-bottom:22px;
}
.hero h1{color:#fff;max-width:680px}
.hero-sub{
  margin-top:20px;max-width:560px;font-size:16px;line-height:1.85;
  color:rgba(255,255,255,.78);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:32px}
.hero-note{margin-top:22px;font-size:13px;color:rgba(255,255,255,.55)}
.hero-figure{
  margin:0;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  border-radius:18px;padding:12px;box-shadow:0 18px 40px rgba(0,0,0,.16);
}
.hero-figure img{border-radius:10px;width:100%;aspect-ratio:16/11;object-fit:cover;border:0}
.hero-figcaption{
  padding:10px 10px 2px;font-size:13px;color:rgba(255,255,255,.6);line-height:1.55;
}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 26px;border-radius:10px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;transition:all .18s ease;
}
.btn-primary{background:var(--copper);color:#fff;border-color:var(--copper)}
.btn-primary:hover{background:var(--copper-dark);border-color:var(--copper-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(180,106,52,.26);color:#fff}
.btn-ghost{border-color:rgba(255,255,255,.45);color:#fff;background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-2px)}
.btn-block{width:100%}
.btn:focus-visible,.mobile-burger:focus-visible,.faq-q:focus-visible{outline:3px solid rgba(180,106,52,.4);outline-offset:2px}

/* Hero footer dots maybe none */

/* 痛点区 */
.pain-section{background:#fff;border-bottom:1px solid var(--line-soft)}
.pain-list{margin-top:8px}
.pain-list li{
  position:relative;display:flex;gap:14px;align-items:flex-start;
  background:var(--paper);border:1px solid var(--line-soft);border-radius:12px;
  padding:15px 18px;margin-bottom:12px;transition:box-shadow .2s ease,transform .2s ease;
}
.pain-list li:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.pain-mark{
  width:28px;height:28px;flex:0 0 28px;border-radius:9px;background:var(--copper-soft);
  display:flex;align-items:center;justify-content:center;color:var(--copper);font-weight:700;font-size:14px;
}
.pain-list strong{display:block;font-size:15px;font-weight:600;color:var(--text);line-height:1.45}
.pain-list em{font-style:normal;font-size:13px;color:var(--muted);margin-top:4px;display:inline-block}
.content-figure{
  background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:10px;
  box-shadow:var(--shadow);
}
.content-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:11px}
.fig-note{
  background:var(--ink-deep);color:#F6F1E8;border-radius:14px;padding:18px 20px;
  display:flex;gap:14px;margin-top:16px;font-size:14px;line-height:1.7;
}
.fig-note::before{content:"〇";color:var(--copper);font-size:18px;line-height:1;flex:0 0 auto}

/* 方案区 */
.solution-section{background:var(--paper)}
.section-head{margin-bottom:34px}
.section-head.flex{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.feature-card{
  background:var(--card);border:1px solid var(--line);border-radius:18px;overflow:hidden;
  height:100%;display:flex;flex-direction:column;box-shadow:var(--shadow);transition:box-shadow .22s ease,transform .22s ease;
}
.feature-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.feature-card .feature-img{position:relative;overflow:hidden;background:var(--line)}
.feature-card .feature-img img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease}
.feature-card:hover .feature-img img{transform:scale(1.025)}
.feature-badge{
  position:absolute;left:14px;bottom:14px;background:rgba(12,53,53,.86);color:#fff;
  border-radius:8px;padding:5px 12px;font-size:13px;font-weight:600;
}
.feature-body{padding:24px 24px 26px;display:flex;flex-direction:column;flex:1}
.card-index{font-family:var(--serif);font-size:13px;color:var(--copper);font-weight:600;letter-spacing:.1em}
.feature-body h3{margin:12px 0 8px}
.feature-body p{color:var(--muted);font-size:15px}
.feature-body .text-link{margin-top:auto;padding-top:18px}
.mini-card{
  background:var(--card);border:1px solid var(--line);border-radius:16px;
  padding:24px;height:100%;box-shadow:var(--shadow);position:relative;
  transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.mini-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:#CFC4B6}
.mini-card.vertical{display:flex;flex-direction:column}
.mini-card.vertical .text-link{margin-top:auto;padding-top:18px}
.mini-card h3{margin:10px 0 8px;font-size:19px}
.mini-card p{color:var(--muted);font-size:14.5px}
.mini-card.slim{padding:24px;display:flex;gap:20px;align-items:flex-start}
.mini-card.slim .card-icon{
  width:46px;height:46px;flex:0 0 46px;border-radius:13px;background:var(--teal-soft);
  display:flex;align-items:center;justify-content:center;color:var(--ink);font-weight:700;font-size:18px;font-family:var(--serif);
}
.mini-card.slim h3{margin-top:0;font-size:18px}
.mini-card.slim .card-link{margin-top:10px}
.mini-card.slim .text-link::after{content:"→"}
.card-foot{margin-top:12px}

/* 数据区 */
.stats-section{
  background:linear-gradient(0deg,rgba(12,53,53,.96),rgba(12,53,53,.94)),url('/assets/images/backpic/back-2.png') center/cover;
  color:#fff;padding:66px 0;
}
.stats-cell{
  text-align:center;padding:12px 10px 8px;border-radius:14px;
}
.stats-cell+.stats-cell{border-left:1px solid rgba(255,255,255,.12)}
.stat-num{
  font-family:var(--serif);font-size:clamp(34px,4vw,52px);font-weight:700;
  color:#E8B98A;line-height:1.1;
}
.stat-label{font-size:14px;color:rgba(255,255,255,.7);margin-top:8px}

/* 最新资讯列表 */
.info-section{background:var(--paper)}
.post-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:16px;padding:24px;box-shadow:var(--shadow);min-height:210px;
  transition:box-shadow .2s ease,transform .2s ease;position:relative;overflow:hidden;
}
.post-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--copper);opacity:0;transition:opacity .2s}
.post-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.post-card:hover::before{opacity:1}
.post-top{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px}
.post-tag{
  background:var(--teal-soft);border:1px solid #C2D5D0;color:var(--ink);
  font-size:12px;padding:3px 10px;border-radius:999px;font-weight:600;
}
.post-date{font-size:13px;color:var(--muted)}
.post-card h3{font-size:19px;line-height:1.4;color:var(--text);transition:color .18s}
.post-card p{color:var(--muted);font-size:14px;line-height:1.7;margin-top:8px;flex:1}
.post-arrow{
  border-top:1px solid var(--line-soft);padding-top:14px;margin-top:16px;
  color:var(--copper);font-size:13px;font-weight:600;display:flex;align-items:center;gap:6px;
}
.post-card:hover h3{color:var(--copper)}
.empty-box{
  background:var(--card);border:1px dashed #C6BDB1;border-radius:16px;padding:42px;
  text-align:center;color:var(--muted);font-size:15px;
}

/* CTA弹窗位 */
.cta-section{
  background:linear-gradient(0deg,rgba(11,48,46,.93),rgba(16,72,68,.9)),url('/assets/images/backpic/back-3.webp') center/cover fixed;
  color:#fff;text-align:center;padding:82px 0;background-size:cover;
}
.cta-section h2{color:#fff;max-width:600px;margin:0 auto}
.cta-section p{color:rgba(255,255,255,.78);max-width:600px;margin:18px auto 0}
.cta-section .btn{margin-top:32px}
.privacy-note{
  margin-top:20px!important;font-size:13px;color:rgba(255,255,255,.5)!important;
  max-width:620px;display:block;
}

/* FAQ */
.faq-section{background:#fff}
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{
  border:1px solid var(--line);background:var(--paper);border-radius:13px;
  margin-bottom:14px;overflow:hidden;transition:border-color .2s,box-shadow .2s;
}
.faq-item.open{border-color:#C9BCAA;box-shadow:var(--shadow)}
.faq-q-heading{margin:0}
.faq-q{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:18px;
  border:none;background:transparent;cursor:pointer;padding:18px 22px 16px;text-align:left;
}
.faq-q-title{font-size:16px;font-weight:600;color:var(--text);line-height:1.5}
.faq-icon{
  position:relative;flex:0 0 24px;width:24px;height:24px;border-radius:50%;
  background:var(--teal-soft);border:1px solid #C5D7D3;transition:transform .25s ease,background .25s;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink);border-radius:2px;
}
.faq-icon::before{left:7px;right:7px;top:11px;height:1.5px}
.faq-icon::after{top:7px;bottom:7px;left:11px;width:1.5px}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--copper-soft);border-color:var(--copper)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 22px}
.faq-answer p{color:var(--muted);font-size:15px;padding-bottom:20px}
.faq-item.open .faq-answer{max-height:420px}

/* 表单弹层 */
.reveal{
  background:#FBF9F5;border-radius:18px;padding:0;max-width:600px;border:1px solid var(--line);
  box-shadow:0 24px 60px rgba(0,0,0,.25);
}
.modal-body{padding:32px 34px 34px}
.reveal .close-button{
  top:14px;right:16px;width:38px;height:38px;border-radius:10px;
  background:var(--paper);border:1px solid var(--line);color:var(--text);
  display:flex;align-items:center;justify-content:center;font-size:24px;line-height:1;
}
.close-button:hover{background:var(--copper-soft);border-color:var(--copper);color:var(--copper)}
.modal-body h3{margin-bottom:8px}
.modal-body>p{color:var(--muted);font-size:14px;margin-bottom:22px}
.form-label{display:block;font-size:14px;font-weight:600;margin-bottom:6px}
.form-input{
  width:100%;display:block;background:#fff;border:1px solid #D3CAC0;border-radius:9px;
  padding:11px 14px;font-size:15px;color:var(--text);margin-bottom:16px;transition:border-color .18s,box-shadow .18s;
}
.form-input:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(21,90,86,.12)}
textarea.form-input{resize:vertical;min-height:110px}
.form-privacy{font-size:12px;color:#8A8F8C;line-height:1.6;margin-top:12px}
.form-privacy a{color:var(--ink);text-decoration:underline;text-underline-offset:3px}

/* 页脚 */
.footer{
  background:#EFECE5;border-top:1px solid var(--line-soft);padding:48px 0 0;
}
.footer-grid{grid-gap:32px}
.footer-title{font-size:16px;font-weight:700;margin-bottom:14px;font-family:var(--serif)}
.footer-brand-block{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.footer-brand-block .brand-mark{width:42px;height:42px;border-radius:11px;background:var(--ink-deep);color:#fff}
.footer-brand-block strong{font-family:var(--serif);font-size:18px;color:var(--ink-deep)}
.footer p{font-size:14px;color:var(--muted);max-width:340px}
.footer-list a{display:inline-block;padding:5px 0;color:var(--muted);font-size:14px}
.footer-list a:hover{color:var(--copper)}
.footer-note{font-size:14px;color:var(--muted)}
.footer-note ul{margin-top:8px}
.footer-note li+li{margin-top:6px}
.footer-bottom{
  border-top:1px solid var(--line);margin-top:40px;padding:18px 0;
  font-size:13px;color:#818A87;
}
.footer-bottom .wrap{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.footer-bottom a{color:#667675}

/* 响应式 */
@media (max-width:1023.98px){
  body{padding-left:0;padding-top:62px}
  .sidebar{display:none}
  .mobile-topbar{display:flex}
  .content-area{width:100%}
  .mobile-nav{max-height:calc(100vh - 80px);overflow-y:auto}
  .hero .wrap{padding-top:46px;padding-bottom:56px}
  .section{padding:56px 0}
  .hero-figure{margin-top:34px}
}
@media (max-width:639.98px){
  h1{font-size:30px}
  h2{font-size:24px}
  .section{padding:48px 0}
  .hero-actions .btn{width:100%}
  .pain-list li{flex-direction:column}
  .stats-section{padding:46px 0}
  .stats-cell{border-left:none;border-top:1px solid rgba(255,255,255,.08)!important;margin-top:12px;padding-top:18px}
  .stats-cell:nth-child(1),.stats-cell:nth-child(2){border-top:none!important}
  .stats-cell:nth-child(1),.stats-cell:nth-child(2){margin-top:0}
  .cta-section{background-attachment:scroll;padding:56px 0}
  .post-card{min-height:auto}
  .mini-card.slim{flex-direction:column;gap:10px}
  .masonry-aside{margin-top:20px}
}
@media (min-width:1024px){
  .footer-grid .cell{padding-left:0}
}

/* roulang page: article */
:root{
  --ink:#155A56;
  --deep:#0C3535;
  --copper:#B46A34;
  --copper-dark:#8F4F24;
  --paper:#F7F5F1;
  --surface:#FFFFFF;
  --text:#243134;
  --muted:#667576;
  --line:#E5E0D7;
  --line-strong:#cfc9bf;
  --shadow:0 1px 2px rgba(0,0,0,.04),0 4px 16px rgba(0,0,0,.05);
  --shadow-hover:0 3px 8px rgba(0,0,0,.06),0 12px 28px rgba(12,53,53,.10);
  --radius:14px;
  --radius-sm:9px;
  --title-font:"Noto Serif CJK SC","Source Han Serif SC","Songti SC",SimSun,serif;
  --body-font:-apple-system,"Noto Sans CJK SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--body-font);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--ink);text-decoration:none;transition:color .2s ease,border-color .2s ease,background .2s ease}
a:hover,a:focus-visible{color:var(--copper)}
ul,ol,dl,figure,p,h1,h2,h3,h4,h5,h6{margin:0 0 1rem}
h1,h2,h3,h4,h5,h6{font-family:var(--title-font);line-height:1.4;color:var(--deep);font-weight:600}
button,input,textarea,select{font-family:var(--body-font);font-size:1rem;line-height:1.6}
button{color:inherit;background:none;border:none;padding:0;cursor:pointer}
a:focus-visible,button:focus-visible{
  outline:3px solid rgba(180,106,52,.35);
  outline-offset:3px;
  border-radius:4px;
}
.layout{min-height:100vh}
.sidebar{
  position:fixed;
  top:0;left:0;
  z-index:80;
  width:248px;
  height:100vh;
  background:var(--deep);
  color:#F6F3EA;
  display:flex;
  flex-direction:column;
  padding:0 16px 20px;
  overflow-y:auto;
  scrollbar-width:thin;
}
.side-inner{display:flex;flex-direction:column;height:100%;min-height:480px}
.side-brand{
  display:flex;
  align-items:center;
  gap:10px;
  padding:26px 8px 20px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:42px;height:42px;
  border-radius:12px;
  background:var(--copper);
  color:#fff;
  font-family:var(--title-font);
  font-size:24px;
  font-weight:700;
  flex:0 0 auto;
}
.brand-text{
  font-family:var(--title-font);
  font-size:20px;
  font-weight:700;
  color:#fff;
  line-height:1.3;
  letter-spacing:.5px;
}
.brand-sub{
  margin:14px 8px 0;
  color:#D8E2DC;
  font-size:13px;
  line-height:1.7;
  opacity:.78;
}
.sidebar-nav{
  margin:24px 0 8px;
}
.sidebar-nav ul{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:5px;
}
.sidebar-nav a{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  padding:11px 13px;
  border-radius:10px;
  color:#EBEFE7;
  font-size:15px;
  font-weight:500;
  letter-spacing:.2px;
  transition:background .2s ease,color .2s ease;
}
.sidebar-nav a i{
  width:20px;
  color:rgba(255,255,255,.7);
  font-size:14px;
  text-align:center;
  transition:color .2s ease;
}
.sidebar-nav a:hover{
  background:rgba(255,255,255,.08);
  color:#fff;
}
.sidebar-nav a.active{
  background:rgba(180,106,52,.18);
  color:#fff;
  font-weight:700;
}
.sidebar-nav a.active::before{
  content:"";
  position:absolute;
  left:2px;
  top:12px;
  bottom:12px;
  width:3px;
  border-radius:4px;
  background:var(--copper);
}
.sidebar-nav a.active::after{
  content:"";
  position:absolute;
  right:10px;
  bottom:8px;
  width:18px;
  height:2px;
  border-radius:4px;
  background:var(--copper);
  opacity:.8;
}
.side-nav-foot{
  margin-top:auto;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.12);
  color:#CFD8CE;
}
.side-notice{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.10);
  border-radius:12px;
  padding:13px 14px 11px;
  margin-bottom:16px;
}
.side-notice strong{
  display:block;
  color:#fff;
  font-size:13px;
  margin-bottom:4px;
  letter-spacing:.2px;
}
.side-notice p{
  margin:0;
  font-size:12.5px;
  line-height:1.7;
  opacity:.82;
}
.side-copy{
  font-size:12px;
  color:rgba(255,255,255,.55);
  line-height:1.8;
  padding:2px 0 4px;
}

.mobile-header{
  display:none;
  position:sticky;
  top:0;
  z-index:70;
  background:var(--deep);
  color:#fff;
}
.mobile-header-main{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:62px;
  padding:0 20px;
}
.mobile-brand{
  display:flex;
  align-items:center;
  gap:9px;
  color:#fff;
  font-family:var(--title-font);
  font-size:18px;
  font-weight:700;
}
.mobile-brand:hover{color:#fff}
.mobile-brand .brand-mark{width:34px;height:34px;font-size:19px;border-radius:10px}
.nav-toggle{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:42px;height:42px;
  color:#fff;
  font-size:20px;
  border-radius:8px;
  background:rgba(255,255,255,.08);
}
.mobile-nav-panel{
  max-height:0;
  overflow:hidden;
  background:var(--deep);
  transition:max-height .28s ease;
}
.mobile-nav-panel.open{max-height:420px}
.mobile-drop-nav{
  padding:8px 20px 20px;
  display:flex;
  flex-direction:column;
  gap:4px;
}
.mobile-drop-nav a{
  color:#EDF0E8;
  font-size:15px;
  padding:10px 12px;
  border-radius:9px;
  border:1px solid transparent;
}
.mobile-drop-nav a:hover{
  background:rgba(255,255,255,.08);
}
.mobile-drop-nav a.active{
  background:rgba(180,106,52,.2);
  color:#fff;
  border-color:rgba(180,106,52,.45);
}

.layout-main{
  display:flex;
  flex-direction:column;
  min-height:100vh;
  margin-left:248px;
  width:auto;
}
.page-content{
  flex:1 0 auto;
  padding:0 40px 30px;
}

.page-max{
  max-width:1120px;
  margin:0 auto;
  width:100%;
  display:block;
}

.article-top{
  position:relative;
  padding:38px 48px 42px;
  margin:34px 0 0;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--shadow);
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
  align-items:center;
  font-size:13px;
  color:var(--muted);
  margin-bottom:20px;
}
.breadcrumb a{
  color:var(--muted);
}
.breadcrumb a:hover{color:var(--copper)}
.breadcrumb-sep{color:#C7C0B6}
.article-h1{
  font-size:34px;
  line-height:1.45;
  color:var(--deep);
  margin-bottom:14px;
  max-width:880px;
}
.article-meta-line{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  align-items:center;
  font-size:13px;
  color:var(--muted);
}
.article-cat-label{
  display:inline-flex;
  align-items:center;
  gap:5px;
  background:rgba(21,90,86,.08);
  color:var(--ink);
  border:1px solid rgba(21,90,86,.22);
  border-radius:999px;
  padding:2px 11px;
  font-weight:600;
  letter-spacing:.2px;
}
.article-date{
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.article-date i{color:var(--copper)}

.article-body{
  max-width:900px;
  margin:22px auto 0;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:18px;
  padding:30px 48px 46px;
  box-shadow:var(--shadow);
  font-size:16px;
  line-height:1.9;
  color:var(--text);
}
.article-content p{
  margin:0 0 1.35em;
  overflow-wrap:break-word;
  word-break:break-word;
}
.article-content h2{
  font-size:24px;
  margin:1.6em 0 .8em;
  padding-left:15px;
  border-left:4px solid var(--copper);
  line-height:1.5;
}
.article-content h3{
  font-size:19px;
  margin:1.5em 0 .6em;
  color:var(--deep);
}
.article-content ul,.article-content ol{
  margin:0 0 1.5em;
  padding-left:1.45em;
}
.article-content li{margin-bottom:.55em}
.article-content a{
  color:var(--ink);
  text-decoration:underline;
  text-decoration-color:rgba(180,106,52,.5);
  text-underline-offset:4px;
}
.article-content a:hover{color:var(--copper)}
.article-content blockquote{
  margin:1.5em 0;
  padding:14px 20px;
  border-left:4px solid var(--copper);
  background:#F4EFE6;
  border-radius:0 12px 12px 0;
  color:#4C5555;
  font-size:17px;
}
.article-content img{
  margin:24px auto;
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--shadow);
}
.article-content pre{
  background:var(--deep);
  color:#F7F3EA;
  padding:18px 20px;
  border-radius:12px;
  overflow-x:auto;
  line-height:1.7;
  margin:1.5em 0;
}
.article-content pre code{
  background:none;
  color:inherit;
  padding:0;
}
.article-content code{
  background:#EFEBE2;
  border:1px solid var(--line);
  padding:2px 7px;
  border-radius:6px;
  font-size:14px;
  color:#3E4F4C;
}
.article-content table{
  width:100%;
  border-collapse:collapse;
  margin:1.5em 0;
  font-size:14.5px;
}
.article-content th{
  background:var(--deep);
  color:#fff;
  padding:11px 14px;
  text-align:left;
  font-weight:600;
}
.article-content td{
  border:1px solid var(--line);
  padding:10px 14px;
  background:#fff;
}
.article-content .table-wrap{overflow-x:auto}
.article-footer-line{
  margin-top:34px;
  padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:16px;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--muted);
}
.article-back{
  display:inline-flex;
  align-items:center;
  gap:7px;
  color:var(--ink);
  font-weight:600;
}
.article-back:hover{color:var(--copper)}

.article-missing{
  text-align:center;
  padding:120px 24px;
  background:var(--surface);
  border:1px dashed var(--line-strong);
  border-radius:18px;
  margin:36px auto 0;
  max-width:820px;
}
.missing-icon{
  width:70px;height:70px;
  margin:0 auto 18px;
  border-radius:50%;
  background:rgba(180,106,52,.12);
  color:var(--copper);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:28px;
}
.article-missing h1{
  font-size:30px;
  margin-bottom:12px;
}
.article-missing p{
  color:var(--muted);
  margin-bottom:24px;
}

.section-more{
  max-width:1120px;
  margin:34px auto 0;
  padding:0 0 10px;
}
.section-more h2{
  font-size:26px;
  color:var(--deep);
  display:flex;
  align-items:center;
  gap:10px;
}
.section-more h2:before{
  content:"";
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--copper);
  transform:rotate(45deg);
}
.section-more .section-sub{
  color:var(--muted);
  font-size:14px;
  margin:4px 0 20px;
}
.guide-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
}
.guide-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:15px;
  padding:22px 22px 18px;
  box-shadow:var(--shadow);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.guide-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-hover);
  border-color:#D5CEC1;
}
.guide-card .g-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;height:40px;
  border-radius:10px;
  color:var(--copper);
  background:rgba(180,106,52,.1);
  font-size:17px;
  margin-bottom:14px;
}
.guide-card h3{
  font-size:18px;
  margin-bottom:8px;
  color:var(--deep);
}
.guide-card p{
  font-size:14px;
  color:var(--muted);
  line-height:1.75;
  margin-bottom:14px;
}
.guide-card .guide-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:600;
  font-size:14px;
  color:var(--ink);
}
.guide-card .guide-link i{
  transition:transform .2s ease;
}
.guide-card .guide-link:hover i{
  transform:translateX(4px);
}
.guide-card:hover .guide-link{
  color:var(--copper);
}

.cta-deep{
  position:relative;
  margin:44px 0 40px;
  border-radius:20px;
  padding:50px 56px;
  overflow:hidden;
  background:
    linear-gradient(90deg, rgba(12,53,53,.95) 0%, rgba(21,90,86,.88) 100%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color:#FCFAF4;
}
.cta-deep-content{
  position:relative;
  z-index:2;
  max-width:720px;
}
.cta-deep h2{
  color:#fff;
  font-size:28px;
  margin-bottom:12px;
}
.cta-deep p{
  color:#D9E2DD;
  font-size:15px;
  margin-bottom:28px;
  line-height:1.8;
}
.btn-row{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 22px;
  border-radius:11px;
  font-weight:600;
  font-size:15px;
  letter-spacing:.2px;
  border:1px solid transparent;
  transition:background .2s ease,border-color .2s ease,color .2s ease,transform .2s ease;
}
.btn-sm{
  padding:4px 12px;
  font-size:13px;
}
.btn:hover{transform:translateY(-1px)}
.btn-copper{
  background:var(--copper);
  color:#fff;
}
.btn-copper:hover{
  background:var(--copper-dark);
  color:#fff;
}
.btn-outline-light{
  border-color:rgba(255,255,255,.7);
  color:#fff;
  background:rgba(255,255,255,.08);
}
.btn-outline-light:hover{
  background:rgba(255,255,255,.16);
  color:#fff;
}

.footer{
  background:var(--deep);
  color:#DFE6DE;
  padding:60px 0 0;
}
.wrap{
  max-width:1200px;
  margin:0 auto;
  padding:0 28px;
}
.footer-grid{
  align-items:flex-start;
  row-gap:34px;
}
.footer-brand-block{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-family:var(--title-font);
  font-size:19px;
  font-weight:700;
  margin-bottom:14px;
}
.footer-brand-block .brand-mark{
  width:38px;height:38px;
  font-size:21px;
}
.footer-grid p{
  font-size:14px;
  line-height:1.85;
  color:#C9D4CC;
  margin-bottom:5px;
}
.footer-title{
  color:#fff;
  font-size:17px;
  margin-bottom:16px;
  font-weight:600;
}
.footer-list a{
  display:inline-block;
  color:#C9D4CC;
  font-size:14px;
  line-height:2.0;
  padding:2px 0;
}
.footer-list a:hover{
  color:#fff;
  text-decoration:underline;
  text-underline-offset:4px;
  text-decoration-color:var(--copper);
}
.footer-note p{
  font-size:13.5px;
  color:#C9D4CC;
  line-height:1.8;
  margin-bottom:13px;
}
.footer-note ul{
  list-style:none;
  margin:0;
  padding:0;
}
.footer-note li{
  position:relative;
  font-size:13px;
  color:#AEBEB4;
  padding-left:14px;
  margin-bottom:8px;
}
.footer-note li:before{
  content:"";
  width:5px;
  height:5px;
  border-radius:50%;
  position:absolute;
  left:1px;
  top:10px;
  background:var(--copper);
}
.footer-bottom{
  margin-top:40px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:18px 0;
}
.footer-bottom .wrap{
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:8px 24px;
  font-size:13px;
  color:#9FB0A6;
}

@media(max-width:1100px){
  .article-top,.article-body{
    margin-left:auto;
    margin-right:auto;
  }
  .guide-grid{
    grid-template-columns:repeat(2,1fr);
  }
}

@media(max-width:1023px){
  .sidebar{display:none}
  .layout-main{
    margin-left:0;
  }
  .mobile-header{
    display:block;
  }
  .mobile-nav-panel.open{
    border-bottom:1px solid rgba(255,255,255,.12);
  }
  .page-content{
    padding:0 22px 20px;
  }
  .article-top{
    margin-top:22px;
  }
}

@media(max-width:767px){
  .article-top{
    padding:28px 23px 32px;
    border-radius:15px;
  }
  .article-body{
    padding:24px 20px 34px;
    border-radius:15px;
    line-height:1.8;
  }
  .guide-grid{
    grid-template-columns:1fr;
  }
  .article-h1{
    font-size:26px;
    line-height:1.5;
  }
  .article-content h2{
    font-size:20px;
  }
  .article-content{
    font-size:15px;
  }
  .cta-deep{
    padding:32px 22px;
    border-radius:16px;
  }
  .cta-deep h2{
    font-size:23px;
  }
  .footer{
    padding-top:44px;
  }
  .page-content{
    padding:0 14px 10px;
  }
}

@media(max-width:520px){
  .page-content{
    padding:0 12px 10px;
  }
  .article-top{
    padding:22px 17px 25px;
  }
  .article-body{
    padding:20px 17px 30px;
  }
  .article-h1{
    font-size:23px;
  }
  .article-meta-line{
    flex-direction:column;
    align-items:flex-start;
    gap:6px;
  }
  .btn-row .btn{
    width:100%;
  }
}

/* roulang page: category1 */
:root{
  --deep:#0C3535;
  --primary:#155A56;
  --accent:#B46A34;
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --line:#E5E0D7;
  --text:#243134;
  --muted:#667576;
  --radius:12px;
  --shadow-sm:0 1px 2px rgba(0,0,0,0.04),0 4px 16px rgba(0,0,0,0.05);
  --shadow-hover:0 8px 22px rgba(0,0,0,0.08);
  --serif:"Noto Serif CJK SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"Noto Sans CJK SC","PingFang SC","Microsoft YaHei",sans-serif;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{font-family:var(--serif);line-height:1.4;color:var(--text)}
a{color:var(--primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--accent)}
img{max-width:100%;display:block}
ul{list-style:none;margin:0;padding:0}
button{background:none;border:0;cursor:pointer;padding:0;font-family:var(--sans)}

.page-shell{display:flex;align-items:flex-start;min-height:100vh}
.main-area{width:100%;margin-left:248px;background:var(--bg);display:flex;flex-direction:column;min-height:100vh}

/* ============ 左侧导航 ============ */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:248px;
  background:var(--deep);
  z-index:200;
  display:flex;
  flex-direction:column;
  color:#fff;
}
.sidebar-inner{display:flex;flex-direction:column;height:100%;padding:30px 0 0}

.brand-area{padding:0 20px;margin-bottom:34px}
.brand{display:flex;align-items:center;gap:12px;padding:4px 6px;border-radius:10px;transition:background .18s ease}
.brand:hover{background:rgba(255,255,255,.06)}
.brand-logo{
  display:flex;align-items:center;justify-content:center;
  width:44px;height:44px;background:var(--accent);
  border-radius:9px;color:#fff;font-weight:800;
  font-family:var(--serif);font-size:23px;letter-spacing:-.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:18px;font-weight:700;letter-spacing:.04em;color:#fff}
.brand-text small{font-size:11.5px;color:rgba(255,255,255,.58);margin-top:5px;letter-spacing:.14em}

.sidebar-nav{flex:1 0 auto;padding:0 16px}
.nav-label{font-size:12px;letter-spacing:.18em;color:rgba(255,255,255,.45);padding:8px 14px 12px}
.sidebar-nav li a{
  display:flex;align-items:center;gap:10px;
  padding:12.5px 14px 12.5px 18px;
  margin-bottom:3px;
  border-left:3px solid transparent;
  border-radius:0 9px 9px 0;
  color:rgba(255,255,255,.68);
  font-size:15px;font-weight:500;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.sidebar-nav li a i{width:18px;text-align:center;font-size:14px;opacity:.88}
.sidebar-nav li a:hover{background:rgba(255,255,255,.07);color:#fff;border-left-color:rgba(180,106,52,.7)}
.sidebar-nav li.active a{color:#fff;background:rgba(180,106,52,.14);border-left-color:var(--accent);font-weight:600}
.sidebar-bottom{
  padding:24px 24px 28px;
  border-top:1px solid rgba(255,255,255,.08);
  font-size:12px;
  color:rgba(255,255,255,.52);
  line-height:1.8;
}

/* ============ 移动端顶部导航 ============ */
.mobile-topbar{
  display:none;
  height:62px;
  padding:0 20px;
  background:var(--deep);
  color:#fff;
  align-items:center;
  justify-content:space-between;
  position:sticky;
  top:0;
  z-index:300;
}
.mobile-brand{font-family:var(--serif);font-weight:800;color:#fff;font-size:18px;letter-spacing:.04em}
.mobile-brand:hover{color:#fff}
.mobile-toggle{display:flex;flex-direction:column;align-items:center;justify-content:center;width:44px;height:44px;border-radius:8px}
.mobile-toggle:hover{background:rgba(255,255,255,.08)}
.mobile-toggle span{display:block;width:20px;height:2px;background:#fff;border-radius:2px;margin:4px 0;transition:transform .25s ease,opacity .2s ease}
.mobile-toggle.is-active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.mobile-toggle.is-active span:nth-child(2){opacity:0}
.mobile-toggle.is-active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.mobile-nav-panel{
  display:none;
  position:sticky;
  top:62px;
  z-index:290;
  background:var(--deep);
  padding:8px 20px 18px;
  border-top:1px solid rgba(255,255,255,.08);
  box-shadow:0 14px 22px rgba(0,0,0,.16);
}
.mobile-nav-panel.open{display:block}
.mobile-nav-panel .nav-label{color:rgba(255,255,255,.5);padding-left:6px}
.mobile-nav-panel ul li a{
  display:flex;align-items:center;gap:12px;
  padding:11px 8px;
  border-radius:8px;
  color:rgba(255,255,255,.74);
  font-size:16px;
  border-left:3px solid transparent;
  transition:all .18s ease;
}
.mobile-nav-panel ul li a i{width:18px;text-align:center;font-size:15px}
.mobile-nav-panel ul li a:hover{background:rgba(255,255,255,.08);color:#fff}
.mobile-nav-panel ul li.active a{color:#fff;border-left-color:var(--accent);background:rgba(180,106,52,.14);font-weight:600}

/* ============ 通用容器与区块 ============ */
.wrap{
  max-width:1180px;
  margin-left:auto;
  margin-right:auto;
  padding-left:36px;
  padding-right:36px;
}
.section{padding:82px 0}
.section-head{margin-bottom:48px;max-width:820px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;
  color:var(--accent);
  letter-spacing:.1em;
}
.section-head h2{margin-top:10px;font-size:33px;line-height:1.4}
.section-head p{margin-top:10px;color:var(--muted);font-size:16px;max-width:760px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;
  border-radius:9px;
  font-weight:600;
  font-size:15px;
  line-height:1.3;
  font-family:var(--sans);
  border:1px solid transparent;
  transition:all .18s ease;
}
.btn:focus-visible{outline:3px solid rgba(180,106,52,.32);outline-offset:2px}
.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-primary:hover{background:#914e20;border-color:#914e20;color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(180,106,52,.22)}
.btn-outline-light{background:rgba(255,255,255,.04);color:#fff;border-color:rgba(255,255,255,.55)}
.btn-outline-light:hover{background:rgba(180,106,52,.24);border-color:var(--accent);color:#fff;transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-ghost:hover{background:rgba(21,90,86,.08);color:var(--primary)}
.btn i{font-size:13px}

/* ============ Hero 短区 ============ */
.page-hero{
  color:#fff;
  padding:72px 0 78px;
  background:
    linear-gradient(112deg,rgba(12,53,53,.97) 0%,rgba(16,72,70,.9) 50%,rgba(21,90,86,.76) 100%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:13.5px;color:rgba(255,255,255,.65);margin-bottom:26px}
.crumbs a{color:rgba(255,255,255,.88)}
.crumbs a:hover{color:#fff;opacity:.85}
.crumbs .sep{opacity:.45}
.crumbs .current{color:#fff;font-weight:600}
.page-hero h1{font-size:40px;line-height:1.3;color:#fff;letter-spacing:.02em;max-width:760px}
.page-hero h1::after{content:"";display:block;width:54px;height:4px;background:var(--accent);border-radius:2px;margin-top:20px}
.hero-lead{max-width:640px;margin-top:20px;color:rgba(255,255,255,.85);font-size:16px;line-height:1.9}
.hero-actions{margin-top:30px;display:flex;gap:14px;flex-wrap:wrap}
.status-card{
  background:var(--surface);
  color:var(--text);
  border-radius:15px;
  padding:26px;
  box-shadow:var(--shadow-sm);
  border:1px solid rgba(255,255,255,.25);
}
.status-card .card-kicker{font-size:12.5px;font-weight:700;letter-spacing:.14em;color:var(--accent)}
.status-card h2{font-size:22px;margin:8px 0 10px}
.status-card p{font-size:14px;color:var(--muted)}
.status-card .tag{margin-top:16px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  background:rgba(21,90,86,.09);
  border:1px solid rgba(21,90,86,.16);
  color:var(--primary);
  font-size:12.5px;
  font-weight:600;
  padding:5px 11px;
  border-radius:999px;
  letter-spacing:.03em;
}

/* ============ 2×2 功能索引 ============ */
.index-section{background:var(--bg)}
.func-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:14px;
  padding:28px;
  height:100%;
  box-shadow:var(--shadow-sm);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
  position:relative;
  display:flex;
  flex-direction:column;
}
.func-card:hover{
  transform:translateY(-3px);
  border-color:#CBBEA9;
  box-shadow:var(--shadow-hover);
}
.func-card-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.func-icon{
  display:flex;align-items:center;justify-content:center;
  width:52px;height:52px;
  background:rgba(21,90,86,.09);
  color:var(--primary);
  border-radius:12px;
  font-size:23px;
  transition:background .18s ease,color .18s ease,transform .2s ease;
}
.func-card:hover .func-icon{background:var(--accent);color:#fff;transform:translateY(-2px)}
.func-num{font-family:var(--serif);font-size:36px;color:rgba(180,106,52,.3);line-height:1}
.func-card h3{font-size:19px;margin:20px 0 10px}
.func-card p{font-size:14.5px;color:var(--muted);line-height:1.75;margin-bottom:14px;flex:1}
.func-link{
  display:inline-flex;align-items:center;gap:7px;
  font-size:14px;font-weight:700;color:var(--primary);
}
.func-link i{transition:transform .2s ease}
.func-card:hover .func-link i{transform:translateX(4px)}

/* ============ 图文模块 ============ */
.feature-detail-section{background:linear-gradient(180deg,var(--bg) 0%,#FFFEFB 100%)}
.feature-panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:16px;
  overflow:hidden;
  box-shadow:var(--shadow-sm);
}
.feature-media{position:relative;min-height:360px;background:var(--deep)}
.feature-media img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover}
.feature-content{padding:48px}
.feature-content .tag{margin-bottom:16px}
.feature-content h3{font-size:25px;line-height:1.45;margin-bottom:14px}
.feature-content p{color:var(--muted);font-size:15px;line-height:1.85;margin-bottom:13px}
.check-list{margin:18px 0 22px;padding:0}
.check-list li{
  position:relative;
  padding-left:27px;
  margin-bottom:9px;
  font-size:14.5px;
  color:var(--text);
}
.check-list li::before{
  content:"\f00c";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  position:absolute;
  left:0;top:0;
  color:var(--accent);
  font-size:12px;
}
.text-link{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:14.5px;border-bottom:1px solid transparent}
.text-link i{transition:transform .2s ease}
.text-link:hover i{transform:translateX(3px)}

.module-note-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:14px;
  padding:30px;
  height:100%;
  box-shadow:var(--shadow-sm);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.module-note-card:hover{transform:translateY(-3px);border-color:#CBBEA9;box-shadow:var(--shadow-hover)}
.module-note-card .note-icon{color:var(--accent);font-size:24px;margin-bottom:16px}
.module-note-card h3{font-size:19px;margin-bottom:11px}
.module-note-card p{font-size:14.5px;color:var(--muted);line-height:1.8}
.module-note-card .mini-link{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:14px;font-weight:700}

/* ============ 使用步骤 ============ */
.steps-section{background:var(--deep);color:#fff;padding:88px 0}
.steps-section .section-head h2{color:#fff}
.steps-section .section-head p{color:rgba(255,255,255,.72)}
.step-card{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);
  border-radius:14px;
  padding:30px 24px;
  height:100%;
  transition:background .2s ease,transform .2s ease,border-color .2s ease;
}
.step-card:hover{
  background:rgba(255,255,255,.09);
  transform:translateY(-3px);
  border-color:rgba(180,106,52,.6);
}
.step-index{
  width:42px;height:42px;
  background:var(--accent);
  color:#fff;
  border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);
  font-size:19px;
  font-weight:700;
  margin-bottom:20px;
}
.step-card h3{font-size:18px;color:#fff;margin-bottom:10px}
.step-card p{font-size:14px;color:rgba(255,255,255,.72);line-height:1.8}

/* ============ CTA ============ */
.cta-section{padding:82px 0}
.cta-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:16px;
  box-shadow:var(--shadow-sm);
  padding:44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:24px;
}
.cta-text h2{font-size:26px;line-height:1.45}
.cta-text p{margin-top:8px;color:var(--muted);font-size:15px;max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.footer{background:var(--deep);color:rgba(255,255,255,.72);padding-top:68px;margin-top:auto}
.footer .wrap{max-width:1180px;margin:0 auto;padding:0 36px}
.footer-grid{row-gap:34px}
.footer-brand-block{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.brand-mark{
  display:flex;align-items:center;justify-content:center;
  width:42px;height:42px;
  background:var(--accent);
  color:#fff;
  border-radius:9px;
  font-family:var(--serif);
  font-weight:800;
  font-size:22px;
}
.footer-brand-block strong{font-family:var(--serif);font-size:19px;color:#fff}
.footer-grid p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:440px}
.footer-title{font-family:var(--sans);font-size:15.5px;color:#fff;font-weight:700;margin:6px 0 18px}
.footer-list{line-height:1.9}
.footer-list a{color:rgba(255,255,255,.72);font-size:14.5px;letter-spacing:.01em}
.footer-list a:hover{color:#fff}
.footer-note p{font-size:13.5px;color:rgba(255,255,255,.6);line-height:1.8}
.footer-note ul{margin-top:16px;padding:0}
.footer-note li{position:relative;color:rgba(255,255,255,.55);font-size:13px;padding-left:18px;line-height:1.8}
.footer-note li::before{content:"";width:6px;height:6px;background:var(--accent);border-radius:50%;position:absolute;left:0;top:10px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:52px;padding:18px 0}
.footer-bottom .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.46)}

/* ============ 响应式 ============ */
@media (max-width:1023.98px){
  .sidebar{transform:translateX(-100%);transition:transform .25s ease}
  .sidebar.is-open{transform:translateX(0);box-shadow:0 0 44px rgba(0,0,0,.28)}
  .main-area{margin-left:0}
  .mobile-topbar{display:flex}
  .mobile-nav-panel{display:none}
  .mobile-nav-panel.open{display:block}
  .wrap{padding-left:30px;padding-right:30px}
  .page-hero h1{font-size:34px}
  .section{padding:64px 0}
}
@media (max-width:767.98px){
  .page-hero{padding:58px 0 62px}
  .page-hero h1{font-size:30px}
  .page-hero h1::after{margin-top:15px}
  .hero-actions .btn{width:100%;justify-content:center}
  .section-head h2{font-size:26px}
  .section{padding:56px 0}
  .func-card,.module-note-card{padding:24px}
  .feature-content{padding:30px}
  .feature-content h3{font-size:21px}
  .step-card{margin-bottom:18px}
  .cta-card{padding:30px}
}
@media (max-width:639.98px){
  .wrap{padding-left:20px;padding-right:20px}
  .footer .wrap{padding:0 20px}
  .page-hero h1{font-size:28px;letter-spacing:.01em}
  .hero-lead{font-size:15px;line-height:1.85}
  .cta-actions .btn{width:100%;justify-content:center}
  .footer-bottom .wrap{justify-content:center;text-align:center}
  .mobile-brand{font-size:16px}
}

/* roulang page: category2 */
:root {
  --teal-900: #0c3535;
  --teal-800: #104848;
  --teal-main: #155a56;
  --teal-soft: rgba(21, 90, 86, 0.08);
  --copper: #b46a34;
  --copper-dark: #93502a;
  --copper-soft: rgba(180, 106, 52, 0.12);
  --paper: #f7f5f1;
  --paper-deep: #efebe3;
  --card: #ffffff;
  --text-main: #243134;
  --text-sub: #667576;
  --line: #e5e0d7;
  --line-dark: #d3ccc0;
  --rad: 12px;
  --rad-sm: 8px;
  --shadow: 0 1px 2px rgba(0,0,0,.04), 0 4px 16px rgba(0,0,0,.05);
  --shadow-hover: 0 2px 3px rgba(0,0,0,.06), 0 10px 26px rgba(0,0,0,.08);
  --serif: "Noto Serif CJK SC","Source Han Serif SC","Songti SC",STSong,"SimSun",serif;
  --sans: "Noto Sans CJK SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text-main);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
a{color:var(--teal-main);text-decoration:none;text-underline-offset:4px;transition:color .2s ease}
a:hover{color:var(--copper)}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,h5{font-family:var(--serif);line-height:1.3;color:var(--text-main);font-weight:700}
.container{max-width:1180px;margin:0 auto;padding-left:24px;padding-right:24px}
.section-pad{padding:84px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:14px;letter-spacing:.12em;color:var(--copper);
  margin-bottom:14px;font-weight:600;
}
.eyebrow::before{content:"";width:28px;height:2px;background:var(--copper);display:inline-block}
.lead-sub{color:var(--text-sub);font-size:17px;line-height:1.85;max-width:800px}

/* ===== sidebar layout ===== */
body{display:block}
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:248px;z-index:50;
  background:var(--teal-900);color:#e8efe7;
  display:flex;flex-direction:column;padding:0;
}
.sidebar-brand{
  padding:30px 24px 24px;border-bottom:1px solid rgba(255,255,255,.12);
}
.brand-icon{
  width:42px;height:42px;border-radius:6px;background:var(--copper);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-size:22px;font-weight:800;margin-bottom:14px;
}
.sidebar-brand .brand-name{
  font-family:var(--serif);font-size:21px;color:#fff;letter-spacing:.04em;line-height:1.3;
}
.sidebar-brand .brand-subtitle{
  display:block;font-size:12px;color:#9bb5ae;margin-top:6px;letter-spacing:.06em;
}
.sidebar-nav{padding:24px 14px;flex:1;overflow-y:auto}
.sidebar-nav ul li{margin-bottom:4px}
.sidebar-nav ul li a{
  display:flex;align-items:center;gap:12px;
  padding:11px 16px;border-radius:8px;
  color:#d4dfd8;font-size:15px;font-weight:500;
  border-left:3px solid transparent;
  transition:background .2s ease,color .2s ease;
}
.sidebar-nav ul li a i{width:18px;font-size:14px;text-align:center;color:#8fa8a3}
.sidebar-nav ul li a:hover{background:rgba(255,255,255,.07);color:#fff}
.sidebar-nav ul li.active a{
  background:rgba(180,106,52,.14);color:#fff;border-left-color:var(--copper);
}
.sidebar-nav ul li.active i{color:var(--copper)}
.sidebar-foot{padding:20px 24px;border-top:1px solid rgba(255,255,255,.1);font-size:12px;color:#91a9a2}
.sidebar-foot p{margin-bottom:4px}
.brand-copy{display:flex;align-items:center;gap:8px}
.brand-copy i{opacity:.6}

/* main content offset */
.main-area{margin-left:248px}

/* ===== mobile topbar ===== */
.mobile-topbar{
  display:none;height:62px;position:sticky;top:0;z-index:60;
  background:var(--teal-900);
  align-items:center;justify-content:space-between;
  padding:0 20px;
}
.mobile-brand{font-family:var(--serif);color:#fff;font-size:18px;letter-spacing:.06em}
.mobile-hamburger{
  border:0;background:transparent;color:#fff;font-size:22px;
  width:44px;height:44px;border-radius:8px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:background .2s;
}
.mobile-hamburger:hover{background:rgba(255,255,255,.1)}
.mobile-menu-panel{
  display:none;position:fixed;top:62px;left:0;right:0;z-index:59;
  background:var(--teal-900);padding:12px 16px 22px;
  box-shadow:0 14px 36px rgba(0,0,0,.18);
}
.mobile-menu-panel.open{display:block}
.mobile-menu-panel a{
  display:block;padding:12px 14px;color:#dde6df;border-radius:8px;
  font-size:15px;border-left:3px solid transparent;
}
.mobile-menu-panel a:hover{background:rgba(255,255,255,.07);color:#fff}
.mobile-menu-panel a.active{color:var(--copper);border-left-color:var(--copper);background:rgba(180,106,52,.1);font-weight:600}

/* ===== buttons & tags ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:8px;font-size:15px;font-weight:600;line-height:1.2;
  border:0;cursor:pointer;transition:all .2s ease;text-decoration:none;
}
.btn-primary{background:var(--copper);color:#fff}
.btn-primary:hover{background:var(--copper-dark);color:#fff;transform:translateY(-1px);box-shadow:0 6px 20px rgba(180,106,52,.22)}
.btn-outline{background:transparent;border:1.5px solid rgba(255,255,255,.5);color:#fff}
.btn-outline:hover{border-color:#fff;color:var(--copper);background:rgba(255,255,255,.06)}
.btn-ghost{background:transparent;border:1.5px solid var(--teal-main);color:var(--teal-main)}
.btn-ghost:hover{background:var(--teal-soft);border-color:var(--teal-main)}
.btn:focus-visible,.txt-link:focus-visible{outline:3px solid rgba(21,90,86,.35);outline-offset:2px}

.tag{
  display:inline-block;padding:2px 10px;border-radius:999px;
  background:var(--teal-soft);border:1px solid rgba(21,90,86,.18);
  color:var(--teal-main);font-size:13px;font-weight:500;line-height:1.7;
}
.tag-copper{background:var(--copper-soft);border-color:rgba(180,106,52,.18);color:var(--copper-dark)}

/* ===== hero ===== */
.category-hero{
  position:relative;background:#103e3d;color:#eef4f0;
  padding:92px 0 70px;overflow:hidden;
}
.category-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.26;
}
.category-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg, rgba(12,45,45,.92) 10%, rgba(18,66,66,.72) 55%, rgba(23,70,66,.52) 100%);
}
.category-hero .hero-box{position:relative;z-index:3}
.category-hero .bread-line{
  font-size:13px;letter-spacing:.02em;color:#a9c2ba;margin-bottom:24px;
  display:flex;flex-wrap:wrap;gap:6px;align-items:center;
}
.category-hero .bread-line a{color:#d3e2dc;border-bottom:1px solid rgba(211,226,220,.3);padding-bottom:1px}
.category-hero .bread-line span{color:var(--copper)}
.kicker{
  display:inline-block;border:1px solid rgba(255,255,255,.25);border-radius:999px;
  padding:4px 14px;font-size:13px;letter-spacing:.1em;color:#c6d8d1;margin-bottom:20px;
  background:rgba(0,0,0,.14);
}
.category-hero h1{
  color:#fff;font-size:38px;line-height:1.36;font-weight:800;
  max-width:720px;margin-bottom:22px;letter-spacing:.01em;
}
.category-hero h1 .mark-line{color:var(--copper);position:relative}
.category-hero .hero-description{
  font-size:16px;color:#ccdbd4;line-height:1.85;max-width:720px;margin-bottom:28px;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-meta{
  margin-top:34px;font-size:13px;color:#9bb0ab;display:flex;gap:20px;flex-wrap:wrap;
}
.hero-meta i{color:var(--copper);margin-right:5px}

/* ===== generic section titles ===== */
.section-head{margin-bottom:38px}
.section-head h2{
  font-size:30px;font-weight:800;margin:8px 0 14px;line-height:1.4;
}
.section-head p{color:var(--text-sub);line-height:1.85;max-width:860px}

/* ===== process path ===== */
.process-area{background:#fff;border-bottom:1px solid var(--line);position:relative}
.process-area .section-head h2{color:var(--text-main)}
.process-steps{
  position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:0;
  margin-top:46px;
}
.pline{position:absolute;top:26px;left:5%;width:90%;height:1px;background:repeating-linear-gradient(90deg,var(--teal-main) 0 4px,transparent 4px 8px);opacity:.3}
.pcard{position:relative;padding-right:12px}
.pnode{
  width:52px;height:52px;border-radius:50%;background:var(--paper);
  border:2px solid var(--teal-main);display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-weight:800;font-size:20px;color:var(--teal-main);
  margin-bottom:18px;position:relative;z-index:2;
}
.pcard h3{font-size:16px;font-weight:800;font-family:var(--sans);line-height:1.5;margin-bottom:8px}
.pcard p{font-size:13.5px;color:var(--text-sub);line-height:1.75}
.pcard:nth-child(even) .pnode{background:var(--copper-soft);border-color:var(--copper);color:var(--copper-dark)}

/* ===== scenario alternating ===== */
.scenario-area{background:var(--paper);padding:84px 0}
.scenario-swap{
  display:flex;gap:48px;margin-bottom:66px;align-items:center;
}
.scenario-swap.small-gap{justify-content:space-between}
.scene-cover{
  width:50%;flex:0 0 50%;
}
.cover-frame{
  border-radius:var(--rad);border:1px solid var(--line);background:#e3dcd0;
  box-shadow:var(--shadow);overflow:hidden;aspect-ratio:4/3;
}
.cover-frame img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.scene-cover:hover .cover-frame img{transform:scale(1.025)}
.scene-meta{flex:1;padding-left:24px;position:relative}
.scene-meta::before{
  content:"";position:absolute;left:0;top:12px;bottom:84px;width:3px;
  background:var(--copper);opacity:.75;border-radius:2px;
}
.scene-meta .scene-no{
  font-family:var(--serif);font-size:15px;color:var(--copper);letter-spacing:.08em;
  display:block;margin-bottom:6px;
}
.scene-meta h3{font-size:22px;font-weight:800;margin-bottom:12px;line-height:1.4}
.scene-meta p{color:var(--text-sub);font-size:15px;line-height:1.86;margin-bottom:14px}
.scene-meta .scene-list{display:inline-flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.scene-meta .scene-link{font-size:14px;font-weight:700}
.scene-swap.flip{flex-direction:row-reverse}
.scene-swap.flip .scene-meta{padding-left:0;padding-right:24px}
.scene-swap.flip .scene-meta::before{left:auto;right:0}
.scene-swap.flip .scene-meta .scene-list{justify-content:flex-end}
.scene-swap.flip .scene-meta .scene-link{display:block;text-align:right}
.scene-swap.flip .scene-meta p{text-align:left}

/* ===== table ===== */
.matrix-area{background:var(--paper-deep);padding:80px 0}
.matrix-table{
  width:100%;border-collapse:separate;border-spacing:0;
  background:#fff;border-radius:var(--rad);overflow:hidden;
  border:1px solid var(--line);
}
.matrix-table thead th{
  background:var(--teal-800);color:#f2f4f0;font-weight:600;font-family:var(--sans);
  font-size:15px;letter-spacing:.02em;text-align:left;padding:14px 18px;
  border-bottom:0;
}
.matrix-table tbody td{
  padding:14px 18px;border-bottom:1px solid var(--line);font-size:14px;line-height:1.7;
}
.mx-t>tbody>tr:last-child td{border-bottom:0}
.mx-t tbody tr{transition:all .18s ease}
.mx-wp tbody tr:hover{background:#faf7f1}
.tablebox{overflow-x:auto}
.mx-note{text-align:center;color:var(--text-sub);font-size:14px;margin-top:20px}
.mx-card .scene-list{justify-content:flex-start;margin:0}

/* ===== faq ===== */
.faq-area{background:#fff;padding:84px 0}
.faq-two-col{
  display:grid;grid-template-columns:1fr 1.25fr;gap:54px;align-items:start;
}
.faq-side{position:sticky;top:26px}
.faq-side .faq-badge{
  background:var(--paper);border:1px solid var(--line);padding:18px 20px;
  border-radius:var(--rad);font-size:14px;color:var(--text-sub);line-height:1.8;
}
.faq-wrap .faq-item{
  margin-bottom:12px;border:1px solid var(--line);border-radius:10px;
  background:#fff;overflow:hidden;transition:border-color .2s,box-shadow .2s;
}
.faq-wrap .faq-item:hover{border-color:var(--line-dark);box-shadow:0 2px 12px rgba(0,0,0,.04)}
.faq-q{
  display:flex;justify-content:space-between;align-items:center;
  width:100%;background:transparent;border:0;text-align:left;
  padding:16px 18px;cursor:pointer;color:var(--text-main);
  font-size:15px;font-weight:700;font-family:var(--sans);
}
.faq-q span:last-child{transition:transform .3s ease;color:var(--copper);font-size:19px;font-weight:400}
.faq-item.open .faq-q span:last-child{transform:rotate(45deg)}
.faq-a{display:none;padding:2px 18px 16px;color:var(--text-sub);font-size:14px;line-height:1.85}
.faq-item.open .faq-a{display:block}
.faq-a a{font-weight:600}
.faq-item.open{border-color:rgba(21,90,86,.25)}

/* ===== cta ===== */
.cta-area{
  background:var(--teal-900);position:relative;overflow:hidden;
  padding:50px 0;color:#dfe8df;
}
.cta-area::before{
  content:"";position:absolute;inset:0;opacity:.14;background-position:center;
  background-size:cover;background-image:url('/assets/images/backpic/back-3.webp');
}
.cta-inner{display:flex;justify-content:space-between;align-items:center;gap:28px;flex-wrap:wrap;position:relative;z-index:3}
.cta-words h2{color:#fff;font-size:24px;margin-bottom:9px;letter-spacing:.02em}
.cta-words p{opacity:.78;font-size:14px;line-height:1.85;margin:0}
.cta-btns{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.cta-note{font-size:12px;opacity:.55;margin-top:6px;display:block}

/* ===== divider ===== */
.tiny-divider{display:block;width:52px;height:2px;background:var(--copper);border-radius:2px;margin:16px 0 20px}

/* ===== footer ===== */
.footer{
  background:#153d3b;color:#c3c9b8;
  padding-top:22px;font-size:14px;
}
.footer .wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.footer-grid{padding:40px 0 34px}
.footer-brand-block{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.brand-mark{
  width:36px;height:36px;border-radius:8px;background:var(--copper);color:#fff;
  font-family:var(--serif);font-size:19px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
}
.footer-brand-block strong{font-family:var(--serif);color:#fbfff2;font-size:18px;letter-spacing:.05em}
.footer p{color:#aab7aa;font-size:14px;line-height:1.8}
.footer-title{
  color:#fdfae9;font-family:var(--sans);font-size:16px;font-weight:600;
  margin-bottom:16px;letter-spacing:.04em;
}
.footer-list a{display:inline-block;color:#aebbb2;font-size:14px;line-height:2.1}
.footer-list a:hover{color:var(--copper)}
.footer-note p{color:#9aa79e}
.footer-note ul{margin-top:10px}
.footer-note ul li{
  padding-left:15px;position:relative;color:#aebbb2;font-size:13px;line-height:1.55;margin-bottom:5px;
}
.footer-note ul li::before{
  content:"";position:absolute;left:0;top:11px;width:5px;height:5px;border-radius:50%;
  background:var(--copper);
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.09);padding:17px 0 20px;
  font-size:12px;color:#99a99b;
}
.footer-bottom .wrap{display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap}
.footer-bottom span{letter-spacing:.02em}

/* ===== responsive ===== */
@media screen and (max-width:1199px){
  .container{padding:0 20px}
}
@media screen and (max-width:1023px){
  .sidebar{display:none}
  .main-area{margin-left:0}
  .mobile-topbar{display:flex}
  .mobile-content-space{height:62px}
  .process-steps{grid-template-columns:repeat(5,1fr);overflow-x:auto;gap:10px;padding-bottom:8px}
  .process-steps .pline{display:none}
  .process-steps .pcard{min-width:170px}
}
@media screen and (max-width:820px){
  .section-pad{padding:64px 0}
  .category-hero{padding:76px 0 58px}
  .category-hero h1{font-size:30px}
  .category-hero .hero-description{font-size:15px}
  .scenario-area{padding:64px 0}
  .scenario-swap{flex-direction:column;gap:28px}
  .scenario-swap .scene-cover{width:100%;flex:1 1 auto}
  .scenario-swap .scene-meta{padding-left:0;width:100%;flex:1 1 auto;padding-top:14px}
  .scenario-swap .scene-meta::before{left:0;right:auto;top:0;bottom:auto;width:60px;height:3px}
  .scenario-swap.flip{flex-direction:column}
  .scenario-swap.flip .scene-meta{padding-right:0}
  .scenario-swap.flip .scene-meta::before{left:0;right:auto}
  .scenario-swap.flip .scene-meta p{text-align:left}
  .metadata-table,thead,tbody,tr,th,td{display:block}
  .matrix-table thead{display:none}
  .matrix-table,.matrix-table tbody td{width:100%}
  .matrix-table tbody td{border-bottom:1px solid var(--line);padding:12px 16px}
  .matrix-table tbody tr{border:1px solid var(--line);margin-bottom:10px;border-radius:12px;overflow:hidden}
  .faq-two-col{grid-template-columns:1fr;gap:42px}
  .faq-side{position:static}
  .btn{padding:10px 16px;font-size:14px}
}
@media screen and (max-width:520px){
  body{font-size:15px}
  .container{padding:0 16px}
  .category-hero h1{font-size:27px}
  .section-head h2{font-size:24px}
  .scenario-meta h3{font-size:20px}
  .cta-inner{padding:20px 18px}
  .btn{width:100%;justify-content:center}
  .hero-actions{flex-direction:column;width:100%}
  .hero-actions .btn{width:100%}
  .footer .wrap{padding:0 16px}
  .footer-bottom .wrap{flex-direction:column;align-items:center;text-align:center}
}

/* roulang page: category3 */
:root {
    --primary: #155A56;
    --primary-deep: #0C3535;
    --accent: #B46A34;
    --accent-deep: #945225;
    --bg-warm: #F7F5F1;
    --card-bg: #FFFFFF;
    --text-main: #243134;
    --text-sub: #667576;
    --border-light: #E5E0D7;
    --radius-card: 12px;
    --radius-btn: 8px;
    --shadow-card: 0 1px 2px rgba(0,0,0,0.04), 0 4px 16px rgba(0,0,0,0.05);
    --shadow-hover: 0 2px 4px rgba(0,0,0,0.05), 0 8px 24px rgba(0,0,0,0.08);
    --font-serif: "Noto Serif CJK SC", "Source Han Serif SC", "Songti SC", "SimSun", Georgia, serif;
    --font-sans: "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  }
  *,
  *::before,
  *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
  }
  body {
    font-family: var(--font-sans);
    color: var(--text-main);
    background-color: var(--bg-warm);
    line-height: 1.75;
    margin: 0;
    -webkit-font-smoothing: antialiased;
  }
  img {
    max-width: 100%;
    height: auto;
    display: block;
  }
  a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s ease;
  }
  a:hover {
    color: var(--accent);
  }
  .layout-wrap {
    display: flex;
    align-items: flex-start;
    min-height: 100vh;
  }
  .sidebar {
    width: 248px;
    min-height: 100vh;
    background: var(--primary-deep);
    color: #f5eee0;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
  }
  .sidebar-header {
    padding: 32px 24px 20px;
    border-bottom: 1px solid rgba(245, 238, 224, 0.14);
  }
  .brand-link {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .brand-link:hover {
    color: var(--accent);
  }
  .brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--accent);
    color: #fff;
    font-weight: 700;
    font-size: 22px;
    line-height: 1;
    font-family: Georgia, serif;
    flex-shrink: 0;
  }
  .brand-name {
    font-size: 16px;
    font-weight: 600;
    color: #f5eee0;
    letter-spacing: 0.02em;
    line-height: 1.4;
    white-space: nowrap;
  }
  .brand-sub {
    display: block;
    font-size: 11px;
    font-weight: 400;
    color: rgba(245, 238, 224, 0.55);
    margin-top: 2px;
    letter-spacing: 0.06em;
  }
  .sidebar-nav {
    flex: 1;
    padding: 20px 16px;
    overflow-y: auto;
  }
  .sidebar-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
  }
  .sidebar-nav li {
    margin-bottom: 6px;
    position: relative;
  }
  .sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    color: rgba(245, 238, 224, 0.8);
    font-size: 15px;
    font-weight: 400;
    border-radius: 10px;
    border-left: 3px solid transparent;
    transition: all 0.22s ease;
  }
  .sidebar-nav a i {
    width: 20px;
    text-align: center;
    font-size: 15px;
    opacity: 0.85;
  }
  .sidebar-nav a:hover {
    background: rgba(255,255,255,0.08);
    color: #fff;
    border-radius: 10px;
    border-left-color: var(--accent);
  }
  .sidebar-nav li.active a {
    background: rgba(180, 106, 52, 0.16);
    color: #fff;
    font-weight: 500;
    border-left: 3px solid var(--accent);
    box-shadow: 0 1px 0 rgba(0,0,0,0.12);
  }
  .sidebar-nav li.active a::after {
    content: "";
    position: absolute;
    left: 14px;
    bottom: 4px;
    width: 28px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
  }
  .sidebar-nav li.active a {
    border-left-color: var(--accent);
  }
  .sidebar-footer {
    padding: 20px 24px;
    border-top: 1px solid rgba(245, 238, 224, 0.14);
    font-size: 12px;
    color: rgba(245, 238, 224, 0.5);
    line-height: 1.75;
  }
  .sidebar-footer p {
    margin-bottom: 4px;
  }
  .sidebar-footer .copy-domain {
    color: rgba(245, 238, 224, 0.35);
    font-size: 11px;
    word-break: break-all;
  }
  .content-side {
    width: calc(100% - 248px);
    margin-left: 248px;
  }
  .mobile-topbar {
    display: none;
    background: var(--primary-deep);
    height: 60px;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    position: sticky;
    top: 0;
    z-index: 200;
  }
  .mobile-topbar .brand-link {
    gap: 8px;
  }
  .mobile-topbar .brand-mark {
    width: 34px;
    height: 34px;
    font-size: 17px;
    border-radius: 8px;
  }
  .mobile-topbar .brand-name {
    font-size: 15px;
  }
  .hamburger-btn {
    background: transparent;
    border: 1px solid rgba(245, 238, 224, 0.3);
    color: #f5eee0;
    width: 44px;
    height: 38px;
    border-radius: 8px;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
  }
  .hamburger-btn:hover,
  .hamburger-btn[aria-expanded="true"] {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
  }
  .mobile-dropdown {
    display: none;
    background: var(--primary-deep);
    border-top: 1px solid rgba(245, 238, 224, 0.15);
    padding: 8px 0 16px;
  }
  .mobile-dropdown.open {
    display: block;
  }
  .mobile-dropdown ul {
    list-style: none;
    margin: 0;
    padding: 0 16px;
  }
  .mobile-dropdown a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 10px;
    color: rgba(245, 238, 224, 0.82);
    font-size: 15px;
    border-radius: 8px;
  }
  .mobile-dropdown a i {
    width: 18px;
    text-align: center;
  }
  .mobile-dropdown li.active a {
    background: rgba(180, 106, 52, 0.16);
    color: #ffffff;
    font-weight: 500;
    border-left: 3px solid var(--accent);
    padding-left: 16px;
  }
  .page-main {
    padding: 0 0 48px;
  }
  .banner-sec {
    background: var(--primary-deep);
    background-image: linear-gradient(to right, rgba(12, 53, 53, 0.88), rgba(21, 90, 86, 0.72)), url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    position: relative;
    padding: 64px 0 56px;
    color: #f2ecdf;
  }
  .banner-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 36px;
  }
  .breadcrumb {
    font-size: 13px;
    color: rgba(242, 236, 223, 0.7);
    margin-bottom: 16px;
  }
  .breadcrumb a {
    color: rgba(242, 236, 223, 0.7);
    border-bottom: 1px solid transparent;
  }
  .breadcrumb a:hover {
    color: #fff;
    border-bottom-color: var(--accent);
  }
  .banner-tag {
    display: inline-block;
    background: rgba(180, 106, 52, 0.8);
    padding: 4px 14px;
    border-radius: 4px;
    font-size: 13px;
    letter-spacing: 0.04em;
    margin-bottom: 18px;
  }
  .banner-sec h1 {
    font-size: 40px;
    font-family: var(--font-serif);
    line-height: 1.3;
    margin-bottom: 12px;
    color: #faf6ee;
    font-weight: 700;
    letter-spacing: 0.02em;
  }
  .banner-lead {
    max-width: 720px;
    font-size: 17px;
    line-height: 1.8;
    color: rgba(242, 236, 223, 0.8);
  }
  .banner-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 26px;
    margin-top: 20px;
    font-size: 14px;
    color: rgba(242, 236, 223, 0.65);
  }
  .banner-meta i {
    margin-right: 5px;
    color: var(--accent);
  }
  .container {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 28px;
  }
  .safe-feature-sec {
    padding-top: 64px;
    padding-bottom: 20px;
  }
  .safe-feature-sec .section-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 36px;
  }
  .section-head h2 {
    font-size: 30px;
    font-family: var(--font-serif);
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.3;
    margin-bottom: 4px;
  }
  .section-head .sub-line {
    font-size: 15px;
    color: var(--text-sub);
    line-height: 1.7;
    max-width: 620px;
  }
  .section-head .sh-tag {
    font-size: 13px;
    color: var(--accent);
    font-weight: 500;
    background: #F3E7DC;
    border-radius: 4px;
    padding: 4px 10px;
    display: inline-block;
  }
  .feature-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .feature-cell {
    background: #fff;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-card);
    padding: 36px 30px 30px;
    transition: all 0.28s ease;
    position: relative;
    box-shadow: var(--shadow-card);
  }
  .feature-cell:hover {
    transform: translateY(-3px);
    border-color: #d0c9bb;
    box-shadow: var(--shadow-hover);
  }
  .feature-cell::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 30px;
    width: 44px;
    height: 3px;
    background: var(--accent);
    border-radius: 3px 3px 0 0;
  }
  .feature-cell .fc-icon {
    width: 50px;
    height: 50px;
    background: #E5EFED;
    border-radius: 12px;
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 18px;
  }
  .feature-cell .fc-icon.alt {
    background: #F3E6DA;
    color: var(--accent);
  }
  .feature-cell h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.45;
  }
  .feature-cell p {
    font-size: 14px;
    line-height: 1.75;
    color: var(--text-sub);
  }
  .feature-cell ul {
    list-style: none;
    margin: 14px 0 0;
    padding: 0;
  }
  .feature-cell ul li {
    font-size: 14px;
    color: var(--text-sub);
    padding-left: 18px;
    position: relative;
    margin-bottom: 6px;
    line-height: 1.7;
  }
  .feature-cell ul li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 10px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    opacity: 0.6;
    border: 2px solid #F3E6DA;
  }
  .block-sec {
    padding: 64px 0;
  }
  .block-sec.highlight-bg {
    background: #EFECE5;
  }
  .section-head-center {
    text-align: center;
    margin-bottom: 40px;
  }
  .section-head-center h2 {
    font-size: 30px;
    font-family: var(--font-serif);
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.4;
  }
  .section-head-center .sub-text {
    max-width: 700px;
    margin: 8px auto 0;
    color: var(--text-sub);
    font-size: 15px;
    line-height: 1.7;
  }
  .guide-row {
    background: #fff;
    border: 1px solid var(--border-light);
    border-radius: 14px;
    display: flex;
    gap: 30px;
    overflow: hidden;
  }
  .guide-side {
    width: 42%;
    background: var(--primary);
    background-image: linear-gradient(135deg, var(--primary-deep), var(--primary));
    color: #faf6ef;
    padding: 40px 32px;
    position: relative;
    min-height: 280px;
  }
  .guide-side .g-label {
    font-size: 13px;
    letter-spacing: 0.08em;
    color: rgba(240, 230, 210, 0.6);
    text-transform: uppercase;
    margin-bottom: 14px;
  }
  .guide-side h3 {
    font-family: var(--font-serif);
    font-size: 24px;
    font-weight: 700;
    line-height: 1.5;
    margin-bottom: 12px;
  }
  .guide-side p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(240, 230, 210, 0.72);
    max-width: 340px;
  }
  .guide-side .step-dot {
    position: absolute;
    right: 28px;
    bottom: 40px;
    font-size: 64px;
    font-weight: 800;
    opacity: 0.12;
    font-family: var(--font-serif);
  }
  .guide-main {
    flex: 1;
    padding: 40px 32px;
    display: grid;
    align-content: center;
    gap: 22px;
  }
  .guide-item {
    border-bottom: 1px solid #efebe4;
    padding-bottom: 18px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
  }
  .guide-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }
  .guide-num {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: #E5EFED;
    color: var(--primary);
    font-weight: 600;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }
  .guide-item h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 5px;
    line-height: 1.5;
  }
  .guide-item p {
    font-size: 14px;
    color: var(--text-sub);
    line-height: 1.7;
    margin-bottom: 0;
  }
  .security-card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 30px;
  }
  .security-card {
    background: var(--card-bg);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-card);
    padding: 30px 26px;
    box-shadow: var(--shadow-card);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
  }
  .security-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
  }
  .security-card .sec-icon {
    width: 46px;
    height: 46px;
    border-radius: 10px;
    background: #E5EFED;
    color: var(--primary);
    font-size: 19px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
  }
  .security-card.rev .sec-icon {
    background: #F3E6DA;
    color: var(--accent);
  }
  .security-card h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 8px;
    line-height: 1.5;
  }
  .security-card p {
    font-size: 14px;
    color: var(--text-sub);
    line-height: 1.75;
  }
  .security-card .sec-links {
    margin-top: 14px;
  }
  .security-card .sec-links a {
    font-size: 13px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--primary);
  }
  .security-card .sec-links a i {
    font-size: 11px;
    margin-top: 2px;
    transition: transform 0.22s ease;
  }
  .security-card .sec-links a:hover i {
    transform: translateX(4px);
  }
  .security-card .tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 12px;
  }
  .security-card .tag-chip {
    display: inline-block;
    background: #f5f1e9;
    border: 1px solid #E5E0D7;
    color: var(--text-sub);
    font-size: 12px;
    line-height: 1.6;
    padding: 2px 10px;
    border-radius: 20px;
  }
  .info-split-section {
    display: grid;
    grid-template-columns: 5fr 7fr;
    gap: 28px;
    align-items: center;
  }
  .info-split-text h2 {
    font-size: 28px;
    font-family: var(--font-serif);
    font-weight: 700;
    line-height: 1.45;
    color: var(--text-main);
    margin-bottom: 16px;
  }
  .info-split-text p {
    font-size: 15px;
    color: var(--text-sub);
    line-height: 1.8;
    margin-bottom: 16px;
    max-width: 440px;
  }
  .info-split-text ul {
    list-style: none;
    margin: 0;
    padding: 0;
  }
  .info-split-text ul li {
    padding: 8px 0 8px 24px;
    position: relative;
    font-size: 14px;
    border-bottom: 1px solid #eee9e1;
    display: flex;
    alignItems: center;
  }
  .info-split-text ul li:last-child {
    border-bottom: none;
  }
  .info-split-text ul li::before {
    content: "\f058";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    position: absolute;
    left: 0;
    color: var(--primary);
    font-size: 14px;
    top: 8px;
  }
  .info-split-media {
    background: #fff;
    border: 1px solid var(--border-light);
    border-radius: 14px;
    padding: 24px;
    box-shadow: var(--shadow-card);
  }
  .info-split-media img {
    border-radius: 8px;
    border: 1px solid var(--border-light);
    width: 100%;
    height: 240px;
    object-fit: cover;
  }
  .media-caption {
    display: block;
    text-align: center;
    font-size: 12px;
    color: var(--text-sub);
    padding-top: 12px;
  }
  .faq-sec {
    padding-top: 10px;
  }
  .faq-boxes {
    max-width: 920px;
    margin: 20px auto 0;
  }
  .faq-accordion-item {
    padding: 0;
    border: 1px solid var(--border-light);
    border-radius: 10px;
    margin-bottom: 14px;
    background: #FCFAF5;
    overflow: hidden;
  }
  .accordion-trigger {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 18px 20px;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-main);
    font-size: 16px;
    font-weight: 500;
    line-height: 1.6;
    text-align: left;
    font-family: var(--font-sans);
  }
  .accordion-trigger:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: -2px;
  }
  .accordion-trigger .acc-sign {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 1px solid var(--accent);
    color: var(--accent);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    transition: transform 0.25s ease;
    background: #fff;
  }
  .acc-panel {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  .acc-content {
    padding: 0 22px 4px;
    color: var(--text-sub);
    font-size: 14px;
    line-height: 1.8;
    border-top: 1px solid #efebe4;
    margin: 0 20px;
    padding: 18px 0 20px;
  }
  .acc-content p {
    margin: 0 0 12px;
  }
  .acc-content ul {
    margin: 8px 0 0;
    padding-left: 20px;
  }
  .acc-content li {
    margin-bottom: 5px;
    font-size: 14px;
  }
  .accordion-trigger[aria-expanded="true"] .acc-sign {
    transform: rotate(45deg);
    background: var(--accent);
    color: #fff;
  }
  .cta-band {
    background: var(--primary);
    background-image: url('/assets/images/backpic/back-3.webp');
    background-size: cover;
    background-blend-mode: multiply;
    background-color: #155a56cc;
    background-position: center;
    border-radius: 14px;
    padding: 52px 56px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 30px;
    flex-wrap: wrap;
  }
  .cta-band h2 {
    font-family: var(--font-serif);
    color: #FAF6EE;
    font-size: 26px;
    line-height: 1.5;
    margin-bottom: 8px;
  }
  .cta-band p {
    color: rgba(245, 238, 224, 0.8);
    font-size: 14px;
    line-height: 1.8;
    max-width: 540px;
    margin-bottom: 0;
  }
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid transparent;
    border-radius: var(--radius-btn);
    font-size: 15px;
    font-weight: 500;
    padding: 12px 26px;
    cursor: pointer;
    transition: all 0.22s ease;
    font-family: var(--font-sans);
    line-height: 1.5;
    min-height: 44px;
    text-decoration: none;
  }
  .btn:focus-visible {
    outline: 3px solid rgba(180, 106, 52, 0.5);
    outline-offset: 2px;
  }
  .btn-primary {
    background: var(--accent);
    color: #ffffff;
    border-color: var(--accent);
  }
  .btn-primary:hover {
    background: var(--accent-deep);
    border-color: var(--accent-deep);
    color: #fff;
    transform: translateY(-1px);
  }
  .btn-outline-light {
    background: transparent;
    color: #FAF6EE;
    border-color: rgba(250, 246, 238, 0.6);
  }
  .btn-outline-light:hover {
    background: rgba(180, 106, 52, 0.85);
    border-color: var(--accent);
    color: #fff;
  }
  .btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
  }
  .btn-outline:hover {
    background: rgba(21, 90, 86, 0.08);
    border-color: var(--primary-deep);
    color: var(--primary-deep);
  }
  .footer {
    background: #0e2b2c;
    color: rgba(235, 230, 220, 0.7);
    margin-top: 20px;
  }
  .footer .wrap {
    max-width: 1280px;
    margin: 0 auto;
  }
  .footer-grid {
    padding: 48px 28px 24px;
  }
  .footer-brand-block {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
  }
  .footer-brand-block .brand-mark {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    font-size: 16px;
  }
  .footer-brand-block strong {
    color: #f2ecdf;
    font-size: 18px;
    font-weight: 600;
    letter-spacing: 0.02em;
  }
  .footer-brand-block p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(235, 230, 220, 0.6);
  }
  .footer p {
    font-size: 13px;
    line-height: 1.8;
    max-width: 420px;
  }
  .footer-title {
    color: #f2ecdf;
    font-size: 15px;
    margin-bottom: 16px;
    position: relative;
    padding-bottom: 8px;
    letter-spacing: 0.04em;
  }
  .footer-title::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 28px;
    height: 2px;
    background: var(--accent);
  }
  .footer-list a {
    color: rgba(235, 230, 220, 0.65);
    font-size: 14px;
    display: inline-block;
    margin-bottom: 6px;
    transition: all 0.2s ease;
    border-bottom: 1px solid transparent;
  }
  .footer-list a:hover {
    color: #ffffff;
    border-bottom-color: var(--accent);
  }
  .footer-note p {
    color: rgba(235, 230, 220, 0.6);
    font-size: 13px;
    margin-bottom: 8px;
  }
  .footer-note ul {
    list-style: none;
    margin: 6px 0 0;
    padding: 0;
  }
  .footer-note ul li {
    position: relative;
    padding-left: 16px;
    font-size: 13px;
    line-height: 1.8;
    color: rgba(235, 230, 220, 0.48);
  }
  .footer-note ul li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 9px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
  }
  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 18px 0;
  }
  .footer-bottom .wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 28px;
    font-size: 13px;
    color: rgba(235, 230, 220, 0.48);
    flex-wrap: wrap;
    gap: 8px;
  }
  .footer-bottom .wrap span:last-child {
    color: rgba(235, 230, 220, 0.35);
    font-size: 12px;
    letter-spacing: 0.02em;
  }
  .reveal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 35, 35, 0.45);
    z-index: 300;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s ease;
  }
  .modal-window {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -48%) scale(0.96);
    width: min(560px, calc(100vw - 32px));
    background: #fff;
    border-radius: 14px;
    z-index: 400;
    box-shadow: 0 30px 50px rgba(0,0,0,0.2);
    transition: all 0.25s ease;
    opacity: 0;
    visibility: hidden;
  }
  .modal-window.open {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
  }
  .reveal-overlay.open {
    opacity: 1;
    visibility: visible;
  }
  .modal-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 22px 26px 12px;
    border-bottom: 1px solid var(--border-light);
  }
  .modal-head h3 {
    font-size: 20px;
    font-family: var(--font-serif);
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 0;
  }
  .modal-close {
    background: transparent;
    border: none;
    width: 30px;
    height: 30px;
    border-radius: 6px;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-sub);
    transition: all 0.2s ease;
  }
  .modal-close:hover {
    background: #F3E6DA;
    color: var(--accent);
  }
  .modal-body {
    padding: 22px 26px;
  }
  .form-row {
    margin-bottom: 14px;
  }
  .form-row label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-main);
    margin-bottom: 5px;
  }
  .form-row input {
    display: block;
    width: 100%;
    border: 1px solid #deddcf;
    border-radius: 6px;
    padding: 10px 12px;
    font-size: 14px;
    background: #fafaf7;
    transition: all 0.2s ease;
    min-height: 42px;
  }
  .form-row input:focus {
    outline: 2px solid rgba(21, 90, 86, 0.25);
    border-color: var(--primary);
    background: #fff;
  }
  .privacy-note {
    font-size: 12px;
    color: var(--text-sub);
    margin-top: 14px;
    line-height: 1.7;
    display: flex;
    align-items: flex-start;
    gap: 4px;
  }
  .privacy-note a {
    color: var(--primary);
    text-decoration: underline;
  }
  .btn-modal {
    width: 100%;
    justify-content: center;
    margin-top: 8px;
  }
  .success-notice {
    background: var(--primary);
    color: #fff;
    border-radius: 8px;
    padding: 16px 18px;
    font-size: 15px;
    line-height: 1.7;
    text-align: center;
  }
  .back-home-link {
    display: inline-block;
    margin-top: 10px;
    font-size: 13px;
    color: var(--text-sub);
    border-bottom: 1px solid rgba(0,0,0,0.3);
  }
  @media (max-width: 1024px) {
    .sidebar {
      transform: translateX(-100%);
    }
    .sidebar.open {
      transform: translateX(0);
    }
    .content-side {
      width: 100%;
      margin-left: 0;
    }
    .mobile-topbar {
      display: flex;
    }
    .footer-grid {
      padding-left: 20px;
      padding-right: 20px;
    }
  }
  @media (max-width: 900px) {
    .security-card-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .guide-row {
      flex-direction: column;
    }
    .guide-side {
      width: 100%;
      min-height: auto;
    }
    .info-split-section {
      grid-template-columns: 1fr;
    }
    .info-split-text p {
      max-width: 100%;
    }
  }
  @media (max-width: 640px) {
    .banner-sec {
      padding: 44px 0 34px;
    }
    .banner-inner {
      padding: 0 20px;
    }
    .banner-sec h1 {
      font-size: 28px;
    }
    .banner-lead {
      font-size: 15px;
    }
    .container {
      padding: 0 16px;
    }
    .feature-grid-2 {
      grid-template-columns: 1fr;
    }
    .security-card-grid {
      grid-template-columns: 1fr;
    }
    .section-head {
      flex-direction: column;
      align-items: flex-start;
      gap: 10px;
    }
    .section-head-center h2,
    .section-head h2 {
      font-size: 24px;
    }
    .block-sec {
      padding: 48px 0;
    }
    .cta-band {
      padding: 32px 24px;
      flex-direction: column;
      text-align: center;
    }
    .cta-band h2 {
      font-size: 22px;
    }
    .footer-bottom .wrap {
      flex-direction: column;
      text-align: center;
    }
    .modal-body {
      padding: 16px 16px;
    }
    .modal-head {
      padding: 18px 16px 10px;
    }
  }
  @media (max-width: 520px) {
    .brand-sub {
      display: none;
    }
    .brand-name {
      font-size: 14px;
    }
    .btn {
      width: 100%;
      justify-content: center;
    }
    .footer-grid {
      padding: 30px 16px 16px;
    }
    .footer-bottom .wrap {
      padding: 0 16px;
    }
    .sidebar-nav a {
      font-size: 14px;
    }
  }

/* roulang page: category4 */
:root {
  --ink: #155A56;
  --ink-deep: #0C3535;
  --copper: #B46A34;
  --copper-dark: #8A4F1F;
  --paper: #F7F5F1;
  --paper-soft: #EFEBE2;
  --card: #FFFFFF;
  --line: #E5E0D7;
  --text: #243134;
  --muted: #667576;
  --soft-oil: #F2EDE4;
  --radius: 12px;
  --radius-lg: 18px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.04), 0 4px 16px rgba(0,0,0,.05);
  --shadow-md: 0 6px 10px rgba(0,0,0,.05), 0 14px 30px rgba(0,0,0,.07);
  --title-font: "Noto Serif CJK SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
  --body-font: "Noto Sans CJK SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  font-family:var(--body-font);
  background:var(--paper);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img { display:block; max-width:100%; }
a { color:var(--ink); text-decoration:none; transition:color .2s ease; }
a:hover, a:focus-visible { color:var(--copper); outline:none; }
ul, ol { list-style:none; }
button, input, textarea, select { font:inherit; border:0; background:none; }
button:focus { outline:2px solid rgba(180,106,52,.45); outline-offset:2px; }

.wrap { max-width:1180px; margin-left:auto; margin-right:auto; padding-left:32px; padding-right:32px; }
.section-head { max-width:820px; margin-bottom:36px; }
.section-head .eyebrow { color:var(--copper); letter-spacing:.16em; font-size:14px; font-weight:600; display:block; margin-bottom:10px; }
.section-head h2 {
  font-family:var(--title-font);
  font-size:31px;
  line-height:1.25;
  color:var(--ink-deep);
  letter-spacing:.02em;
  margin-bottom:10px;
}
.section-head p { color:var(--muted); font-size:15px; }

/* ===== side navigation ===== */
.sidebar {
  position:fixed;
  left:0; top:0; bottom:0;
  width:248px;
  background:linear-gradient(165deg, #0F3E40 0%, #092223 88%);
  color:#F4EDDE;
  display:flex;
  flex-direction:column;
  z-index:120;
}
.sidebar-brand {
  padding:30px 24px 22px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.brand-inline { display:flex; align-items:center; gap:12px; }
.brand-badge {
  width:38px; height:38px; flex:none;
  border-radius:10px;
  background:var(--copper);
  color:#fff;
  font-family:"Source Han Serif SC","Songti SC",serif;
  font-size:20px;
  font-weight:700;
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 4px 12px rgba(0,0,0,.16);
}
.brand-text { font-size:16px; color:white; font-weight:700; letter-spacing:.02em; }
.brand-caption { margin-top:12px; color:rgba(255,255,255,.46); font-size:12px; }
.sidebar-nav { flex:1; overflow-y:auto; padding:23px 12px; }
.sidebar-nav .nav-caption { color:rgba(255,255,255,.36); font-size:12px; letter-spacing:.1em; padding:0 14px 9px; }
.sidebar-nav li { margin-bottom:6px; }
.sidebar-nav a {
  display:flex;
  align-items:center;
  border-radius:8px;
  padding:11px 14px;
  color:rgba(255,255,255,.72);
  font-size:14px;
  line-height:1.4;
  transition:background .2s ease, color .2s ease;
  border-left:3px solid transparent;
}
.sidebar-nav a::before {
  content:"";
  width:6px; height:6px;
  margin-right:12px;
  border-radius:50%;
  background:rgba(255,255,255,.25);
  flex:none;
  transition:background .2s ease;
}
.sidebar-nav a:hover { background:rgba(255,255,255,.06); color:#fff; }
.sidebar-nav a:hover::before { background:var(--copper); }
.sidebar-nav .active a { background:rgba(255,255,255,.1); color:#FFFFFF; border-left-color:var(--copper); }
.sidebar-nav .active a::before { background:var(--copper); }
.sidebar-foot { padding:20px 22px 24px; border-top:1px solid rgba(255,255,255,.1); font-size:12px; color:rgba(255,255,255,.4); line-height:1.6; }
.sidebar-foot strong { display:block; color:rgba(255,255,255,.72); font-weight:600; margin-bottom:4px; }

/* ===== mobile topbar ===== */
.mobile-topbar {
  display:none;
  position:sticky;
  top:0; z-index:220;
  background:var(--ink-deep);
  color:white;
  height:60px;
  padding:0 18px;
  align-items:center;
  justify-content:space-between;
  box-shadow:0 2px 10px rgba(0,0,0,.18);
}
.mobile-brand { display:flex; align-items:center; gap:10px; color:white; font-weight:700; }
.mobile-brand .brand-badge { width:30px;height:30px;font-size:15px; }
.mobile-burger { width:42px; height:42px; border-radius:8px; display:flex; align-items:center; justify-content:center; }
.mobile-burger span { display:block; width:20px; height:2px; background:#F7F0E6; margin:4px auto; border-radius:2px; transition:.2s; }
.mobile-menu {
  display:none;
  position:sticky; top:60px;
  z-index:200;
  background:#092223;
  box-shadow:0 12px 20px rgba(0,0,0,.28);
  padding:8px 14px 16px;
}
.mobile-menu.mobile-open { display:block; }
.mobile-menu a { display:block; padding:12px 12px; color:rgba(255,255,255,.8); border-radius:8px; font-size:14px; }
.mobile-menu a:hover, .mobile-menu .active a { background:rgba(255,255,255,.08); color:#fff; }
.mobile-menu .active a { border-left:3px solid var(--copper); padding-left:15px; }

/* ===== main area ===== */
.main-area { margin-left:248px; min-height:100vh; background:var(--paper); display:flex; flex-direction:column; }
.main-content { flex:1; }

/* generic button */
.btn {
  display:inline-flex; align-items:center; justify-content:center;
  border-radius:8px;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  padding:13px 22px;
  transition:background .2s ease, border .2s ease, color .2s ease, box-shadow .2s ease;
  cursor:pointer;
}
.btn-solid { background:var(--copper); color:#fff; border:1px solid var(--copper); box-shadow:0 4px 10px rgba(180,106,52,.18); }
.btn-solid:hover, .btn-solid:focus { background:var(--copper-dark); border-color:var(--copper-dark); color:#fff; box-shadow:0 8px 18px rgba(180,106,52,.24); }
.btn-ghost { background:transparent; color:var(--ink); border:1px solid rgba(21,90,86,.42); }
.btn-ghost:hover, .btn-ghost:focus { background:rgba(21,90,86,.08); border-color:var(--ink); color:var(--ink); }
.btn-light { background:#F7F5F1; color:var(--ink-deep); border:1px solid rgba(247,245,241,.5); }
.btn-light:hover { background:#fff; color:var(--ink); box-shadow:0 8px 18px rgba(0,0,0,.14); }

/* ===== category hero ===== */
.sub-hero {
  background:linear-gradient(112deg, #E8DFD0 0%, #F7F5F1 44%, #F1EBDF 94%), url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:55% center;
  border-bottom:1px solid var(--line);
}
.faq-hero { padding:68px 0 62px; }
.breadcrumb { display:flex; align-items:center; gap:8px; font-size:13px; color:var(--muted); margin-bottom:22px; flex-wrap:wrap; }
.breadcrumb a { color:var(--muted); }
.breadcrumb a:hover { color:var(--copper); }
.breadcrumb .sep { color:#C0B7A7; }
.hero-title-title { margin-bottom:.2rem; }
.eyebrow-hero { display:inline-flex; align-items:center; gap:6px; color:var(--copper); font-size:13px; font-weight:700; letter-spacing:.1em; margin-bottom:13px; }
.eyebrow-hero::before { content:""; width:16px; height:2px; background:var(--copper); border-radius:2px; }
.page-h1 {
  font-family:var(--title-font);
  font-size:clamp(28px, 3.6vw, 42px);
  line-height:1.28;
  color:var(--ink-deep);
  margin-bottom:14px;
  letter-spacing:.01em;
}
.hero-desc { color:#4F6668; font-size:15px; max-width:620px; margin-bottom:26px; }
.hero-actions { display:flex; gap:12px; flex-wrap:wrap; }
.hero-aside {
  background:linear-gradient(155deg, #0C3A3A, #0B2C2C);
  color:rgba(255,255,255,.88);
  border-radius:var(--radius-lg);
  padding:26px 24px 20px;
  box-shadow:0 20px 40px rgba(9,40,39,.14);
  height:100%;
  display:flex;
  flex-direction:column;
}
.hero-aside-label { font-size:12px; color:rgba(255,255,255,.54); letter-spacing:.08em; margin-bottom:16px; }
.hero-aside h2 { color:white; font-family:var(--title-font); font-size:21px; line-height:1.45; margin-bottom:14px; }
.hero-aside-list li { display:flex; align-items:flex-start; gap:8px; padding:5px 0; font-size:14px; color:rgba(255,255,255,.86); }
.hero-aside-list li::before { content:""; width:5px; height:5px; background:#B46A34; border-radius:50%; flex:none; margin-top:10px; }
.hero-aside-foot { border-top:1px solid rgba(255,255,255,.15); padding-top:15px; margin-top:18px; font-size:12px; color:rgba(255,255,255,.45); line-height:1.7; }

/* ===== quick pointer cards ===== */
.quick-area { padding:50px 0 8px; }
.quick-card {
  display:block;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:20px 18px 19px;
  box-shadow:var(--shadow-sm);
  height:100%;
  transition:transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.quick-card:hover { transform:translateY(-3px); border-color:#C8C0B2; box-shadow:var(--shadow-md); }
.quick-icon {
  width:41px; height:41px;
  border-radius:10px;
  background:rgba(21,90,86,.1);
  color:var(--ink);
  display:flex; align-items:center; justify-content:center;
  margin-bottom:13px;
}
.quick-card strong { display:block; font-size:15px; color:var(--ink-deep); margin-bottom:5px; }
.quick-card span { font-size:13px; color:var(--muted); line-height:1.55; }
.quick-card .quick-go { color:var(--copper); font-size:13px; margin-top:8px; display:block; font-weight:600; }
.quick-card .quick-go::after { content:" →"; }

/* ===== faq details ===== */
.faq-detail { padding:42px 0 64px; }
.faq-main-box {
 background:#fff;
 border:1px solid var(--line);
 border-radius:22px;
 padding:clamp(18px, 3vw, 38px);
 box-shadow:var(--shadow-sm);
 margin-top:28px;
}
.faq-group { margin-bottom:40px; }
.faq-group:last-of-type { margin-bottom:0; }
.faq-group-title { display:flex; align-items:center; gap:10px; margin-bottom:14px; color:var(--ink-deep); font-size:18px; font-family:var(--title-font); }
.faq-group-title .faq-num { color:var(--copper); font-size:13px; letter-spacing:.1em; font-family:var(--body-font); font-weight:700; border:1px solid var(--line); border-radius:30px; padding:3px 10px; }
.accordion .accordion-item { margin-bottom:10px; border:1px solid var(--line); border-radius:10px; background:#fff; overflow:hidden; transition:border-color .2s ease, box-shadow .2s ease; }
.accordion .accordion-item.is-active { border-color:#C9D9D5; box-shadow:0 4px 14px rgba(0,0,0,.045); }
.accordion-title {
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:17px 20px;
  font-size:15px;
  font-weight:600;
  color:var(--ink-deep);
  line-height:1.5;
  background:#FDFCFA;
  border-radius:10px;
}
.accordion-title:hover { background:#FBF8F2; color:var(--ink-deep); }
.accordion-title::after {
  content:"+";
  border:0 !important;
  width:22px; height:22px;
  background:#EFEAE1;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--copper);
  font-size:17px;
  line-height:1;
  font-weight:400;
  margin-left:12px;
  transform:none !important;
  transition:background .2s ease, transform .2s ease;
}
.accordion-item.is-active > .accordion-title::after { content:"−"; background:var(--copper); color:#fff; }
.accordion-content { background:#FCFBF8 !important; color:var(--text) !important; padding:0 22px 21px 20px !important; border:0 !important; font-size:14.5px; }
.accordion-content p { margin-bottom:9px; }
.accordion-content li { position:relative; padding-left:17px; margin-bottom:5px; color:#4A5A5C; }
.accordion-content li::before { content:""; position:absolute; left:4px; top:8px; width:5px; height:5px; border-radius:50%; background:var(--copper); }
.accordion-content .faq-tip { background:#EDE7DC; border-radius:8px; padding:10px 14px; color:var(--ink-deep); font-size:13px; }
.faq-note { margin-top:24px; background:#FFFFFF; border:1px dashed #CFC7B8; border-radius:10px; padding:14px 17px; font-size:13px; color:var(--muted); text-align:center; }
.faq-note a { color:var(--copper); font-weight:600; }

/* ===== audit-process / coverpic section ===== */
.audit-process {
  background:linear-gradient(180deg, #EFEAE0 0%, #F7F5F1 100%);
  padding:74px 0;
  border-top:1px solid var(--line);
}
.process-intro h2 { font-family:var(--title-font); color:var(--ink-deep); font-size:30px; line-height:1.35; margin-bottom:12px; }
.process-intro > p { color:var(--muted); font-size:14.5px; margin-bottom:28px; }
.process-steps li { display:flex; gap:15px; margin-bottom:20px; background:#fff; border:1px solid var(--line); border-radius:12px; padding:15px 17px; box-shadow:var(--shadow-sm); }
.step-num { width:32px; height:32px; border-radius:50%; background:rgba(21,90,86,.09); color:var(--ink); font-weight:700; font-size:13px; display:flex; align-items:center; justify-content:center; flex:none; margin-top:2px; }
.process-steps strong { color:var(--ink-deep); font-size:15px; display:block; margin-bottom:3px; }
.process-steps p { color:var(--muted); font-size:13px; line-height:1.6; }
.process-media { position:relative; height:100%; border-radius:18px; overflow:hidden; border:1px solid var(--line); box-shadow:var(--shadow-md); }
.process-media img { width:100%; height:100%; object-fit:cover; min-height:280px; }
.process-media::after { content:"访问排查参考"; position:absolute; bottom:12px; left:12px; background:rgba(8,43,43,.74); color:#F4EDDE; border:1px solid rgba(255,255,255,.14); padding:5px 12px; border-radius:20px; font-size:12px; }

/* ===== support strip ===== */
.support-area { padding:70px 0; background:#fff; border-top:1px solid var(--line); }
.support-panel {
  background:linear-gradient(139deg, #0C3535 0%, #0B4442 75%, #125654 100%);
  border-radius:24px;
  padding:clamp(24px, 5vw, 54px);
  color:white;
  position:relative;
  overflow:hidden;
}
.support-panel::before { content:""; position:absolute; top:-70px; right:-50px; width:250px; height:250px; background:url('/assets/images/backpic/back-2.png') center/cover; opacity:.1; transform:rotate(12deg); }
.support-panel::after { content:"HTH官网入口"; position:absolute; right:12px; bottom:-26px; font-size:110px; font-family:var(--title-font); color:rgba(255,255,255,.045); font-weight:700; letter-spacing:-.02em; line-height:1; pointer-events:none; }
.support-panel h2 { font-family:var(--title-font); font-size:28px; line-height:1.4; margin-bottom:12px; color:#fff; }
.support-panel > p { color:rgba(255,255,255,.78); font-size:14.5px; max-width:600px; margin-bottom:25px; }
.support-actions { display:flex; gap:12px; flex-wrap:wrap; opacity:.98; }
.support-hint { margin-top:13px; color:rgba(255,255,255,.45); font-size:12px; }

/* ===== final cta band ===== */
.cta-band { padding:28px 0 62px; background:#fff; border-top:1px solid transparent; }
.cta-band-inner {
  background:#F7F5F1;
  border:1px solid var(--line);
  border-radius:20px;
  padding:34px 36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
}
.cta-band h3 { font-family:var(--title-font); font-size:21px; color:var(--ink-deep); line-height:1.5; margin-bottom:4px; }
.cta-band p { color:var(--muted); font-size:14px; }

/* ===== footer ===== */
.footer { background:#0B2829; color:rgba(255,255,255,.66); }
.footer .wrap { padding-top:52px; padding-bottom:20px; }
.footer-grid { align-items:start; }
.footer-brand-block { display:flex; align-items:center; gap:12px; margin-bottom:14px; }
.footer-brand-block .brand-mark { background:var(--copper); width:32px; height:32px; border-radius:9px; color:#fff; display:flex; align-items:center; justify-content:center; font-size:16px; font-weight:700; }
.footer-brand-block strong { color:#F5F0E7; font-size:17px; font-weight:700; }
.footer p { font-size:13.5px; line-height:1.75; margin-bottom:10px; color:rgba(255,255,255,.65); }
.footer-title { color:#F5F0E7; font-size:14px; font-weight:600; margin-bottom:15px; letter-spacing:.05em; }
.footer-list { line-height:1.8; }
.footer-list a { color:rgba(255,255,255,.6); font-size:13.5px; display:inline-block; margin-right:12px; line-height:2; }
.footer-list a:hover { color:#E0CB9B; }
.footer-note { background:rgba(255,255,255,.04); border:1px solid rgba(255,255,255,.08); border-radius:8px; padding:14px; }
.footer-note p { font-size:12.5px; color:rgba(255,255,255,.55); }
.footer-note ul { padding-left:0; }
.footer-note li { font-size:12px; color:rgba(255,255,255,.44); position:relative; padding-left:14px; margin-bottom:3px; }
.footer-note li::before { content:""; position:absolute; left:0; top:8px; width:5px; height:5px; background:var(--copper); border-radius:50%; }
.footer-bottom { border-top:1px solid rgba(255,255,255,.1); margin-top:24px; padding-bottom:21px; }
.footer-bottom .wrap { padding-top:19px; display:flex; align-items:center; justify-content:space-between; gap:10px; flex-wrap:wrap; font-size:12.5px; color:rgba(255,255,255,.38); }
.footer-bottom span:last-child { color:rgba(255,255,255,.24); }
.footer a { color:rgba(255,255,255,.65); }
.footer a:hover { color:#D99B5E; }

/* ===== responsive ===== */
@media (max-width: 1023.98px) {
  .sidebar { display:none; }
  .main-area { margin-left:0; }
  .mobile-topbar { display:flex; }
}
@media (max-width: 767.98px) {
  .wrap { padding-left:20px; padding-right:20px; }
  .sub-hero { padding:40px 0 45px; }
  .faq-hero { padding:36px 0 42px; }
  .hero-actions .btn { width:auto; }
  .page-h1 { font-size:30px; }
  .section-head h2 { font-size:24px; }
  .process-media img { min-height:210px; }
  .support-panel h2 { font-size:23px; }
  .cta-band-inner { padding:22px 16px; }
  .faq-main-box { padding:16px; }
  .footer .wrap { padding-top:37px; padding-left:20px; padding-right:20px; }
}
@media (max-width: 520px) {
  .hero-actions { flex-direction:column; align-items:stretch; }
  .hero-actions .btn { width:100%; }
  .mobile-topbar { padding:0 12px; }
  .faq-main-box { padding:10px; border-radius:12px; }
  .accordion-title { font-size:14px; padding:15px 15px 15px 17px; }
  .accordion-content { padding:0 17px 17px 15px !important; font-size:13.5px; }
  .support-actions { width:100%; }
  .support-actions .btn { width:100%; }
  .process-steps li { gap:11px; }
  .process-steps strong { font-size:14px; }
  .btn { padding:14px 20px; }
}