/* roulang page: index */
:root{
  --bg:#F7F5F0; --bg-2:#EFEBE2; --ink:#14201B;
  --text:#1B2420; --muted:#5A6660; --faint:#8A928B;
  --line:#DED9CE; --line-strong:#C4BDAD;
  --brand:#1D3B30; --accent:#D2603A; --sage:#7E9A8C;
  --radius-sm:4px; --radius-btn:6px; --radius-card:8px; --radius-lg:12px;
  --shadow-1:0 1px 2px rgba(20,32,27,.04);
  --shadow-2:0 10px 30px rgba(20,32,27,.07);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px; --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:96px;
  --bs-body-bg:var(--bg); --bs-body-color:var(--text);
  --bs-border-color:var(--line); --bs-primary:var(--brand); --bs-primary-rgb:29,59,48;
  --bs-link-color:var(--brand); --bs-link-hover-color:var(--accent);
  --bs-border-radius:8px; --bs-body-font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;font-size:16px;line-height:1.9;letter-spacing:.01em;overflow-x:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--accent)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
.container{max-width:1240px;padding-left:24px;padding-right:24px;margin:0 auto}
@media (max-width:575.98px){.container{padding-left:20px;padding-right:20px}}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:900;background:rgba(247,245,240,.94);backdrop-filter:saturate(140%) blur(8px);border-bottom:1px solid var(--line)}
.header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:baseline;gap:5px;font-size:17px;font-weight:700;letter-spacing:.02em;color:var(--text);white-space:nowrap}
.brand:hover{color:var(--text)}
.brand .brand-sub{color:var(--brand)}
.brand .brand-tag{font-size:10px;font-weight:600;letter-spacing:.08em;color:var(--sage);border:1px solid var(--line-strong);border-radius:3px;padding:1px 5px;margin-left:6px;position:relative;top:-1px}
.main-nav{display:flex;align-items:center;gap:26px}
.main-nav a{position:relative;font-size:15px;color:var(--muted);padding:4px 0}
.main-nav a::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .22s ease}
.main-nav a:hover{color:var(--text)}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1)}
.main-nav a.active{color:var(--text);font-weight:600}
.header-actions{display:flex;align-items:center;gap:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 26px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;letter-spacing:.02em;transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;border:1px solid transparent;min-height:44px}
.btn-primary{background:var(--brand);color:#F7F5F0}
.btn-primary:hover{background:var(--accent);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-outline{border-color:var(--line-strong);color:var(--text);background:transparent}
.btn-outline:hover{border-color:var(--brand);background:var(--bg-2);color:var(--brand);transform:translateY(-1px)}
.btn-sm{height:40px;min-height:40px;padding:0 18px;font-size:14px}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;align-items:center;border:1px solid var(--line-strong);border-radius:var(--radius-btn)}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--text);transition:transform .2s ease}
.mobile-nav{position:fixed;inset:0;z-index:1000;background:var(--ink);color:#F7F5F0;display:flex;flex-direction:column;padding:28px 24px 40px;opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .25s ease,transform .25s ease,visibility .25s}
body.nav-open .mobile-nav{opacity:1;visibility:visible;transform:translateY(0)}
body.nav-open{overflow:hidden}
.mobile-nav-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:20px;border-bottom:1px solid rgba(247,245,240,.16)}
.mobile-nav-head .brand{color:#F7F5F0;font-size:16px}
.mobile-nav-head .brand .brand-sub{color:var(--sage)}
.nav-close{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border:1px solid rgba(247,245,240,.3);border-radius:var(--radius-btn);color:#F7F5F0;font-size:18px;line-height:1}
.mobile-nav ul{margin-top:12px}
.mobile-nav li{border-bottom:1px solid rgba(247,245,240,.14)}
.mobile-nav li a{display:block;padding:16px 0;font-size:20px;font-weight:600;color:#F7F5F0}
.mobile-nav li a::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-right:10px;vertical-align:middle;opacity:0}
.mobile-nav li a.active::before{opacity:1}
.mobile-nav .mobile-cta{margin-top:auto;padding-top:28px}
.mobile-nav .mobile-cta .btn{width:100%;border-color:rgba(247,245,240,.4);color:#F7F5F0}
.mobile-nav .mobile-cta .btn:hover{background:rgba(247,245,240,.1);border-color:#F7F5F0;color:#fff}

/* ---------- hero ---------- */
.hero{padding:72px 0 88px;border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;color:var(--faint);text-transform:uppercase}
.eyebrow::before{content:"";width:32px;height:1px;background:var(--line-strong)}
.hero h1{font-size:clamp(1.9rem,4vw,3.25rem);line-height:1.24;font-weight:700;letter-spacing:-.01em;margin-top:18px}
.hero .hero-sub{margin-top:20px;font-size:18px;line-height:1.85;color:var(--muted);max-width:32em}
.hero-actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.hero-meta{display:flex;flex-wrap:wrap;margin-top:44px;border-top:1px solid var(--line);padding-top:20px}
.hero-meta div{display:flex;flex-direction:column;gap:2px;padding-right:28px;margin-right:28px;border-right:1px solid var(--line)}
.hero-meta div:last-child{border-right:0;margin-right:0;padding-right:0}
.hero-meta strong{font-size:20px;font-weight:700;color:var(--brand);letter-spacing:.01em}
.hero-meta span{font-size:13px;color:var(--faint)}
.hero-figure{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1);aspect-ratio:16/11;background:var(--bg-2)}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-figure::after{content:"";position:absolute;inset:0;background:rgba(20,32,27,.06)}
.hero-caption{margin-top:12px;font-size:13px;color:var(--faint);line-height:1.7}

/* ---------- section base ---------- */
.section{padding:96px 0}
.section + .section{border-top:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2rem);line-height:1.35;font-weight:700;letter-spacing:-.005em}
.section-head p{margin-top:12px;font-size:16px;color:var(--muted);max-width:44em}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);white-space:nowrap}
.text-link .arw{transition:transform .2s ease}
.text-link:hover{color:var(--accent)}
.text-link:hover .arw{transform:translateX(3px)}

/* ---------- capability list ---------- */
.cap-grid{display:grid;grid-template-columns:4fr 8fr;gap:56px}
.cap-grid h2{font-size:clamp(1.5rem,2.6vw,2rem);line-height:1.35;font-weight:700}
.cap-grid .cap-lead{margin-top:16px;font-size:15px;line-height:1.9;color:var(--muted)}
.cap-list{border-top:1px solid var(--line)}
.cap-item{display:grid;grid-template-columns:56px 1fr 24px;gap:16px;align-items:start;padding:24px 16px 24px 0;border-bottom:1px solid var(--line);transition:background .2s ease}
.cap-item:hover{background:var(--bg-2)}
.cap-item .num{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;letter-spacing:.1em;color:var(--faint);padding-top:4px;transition:color .2s ease}
.cap-item:hover .num{color:var(--accent)}
.cap-item h3{font-size:17px;font-weight:600;line-height:1.5}
.cap-item p{margin-top:6px;font-size:15px;line-height:1.8;color:var(--muted)}
.cap-item .chev{align-self:center;color:var(--line-strong);transition:transform .2s ease,color .2s ease}
.cap-item:hover .chev{transform:translateX(3px);color:var(--accent)}

/* ---------- stats ---------- */
.stats{background:var(--ink);color:#F7F5F0;padding:64px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:0 32px;border-left:1px solid rgba(247,245,240,.16)}
.stat:first-child{border-left:0;padding-left:0}
.stat strong{display:block;font-size:32px;font-weight:700;line-height:1.2;color:#F7F5F0}
.stat strong em{font-style:normal;font-size:14px;font-weight:500;color:var(--sage);margin-left:4px}
.stat span{display:block;margin-top:8px;font-size:13px;color:var(--sage);line-height:1.7}

/* ---------- scenario ---------- */
.scene-grid{display:grid;grid-template-columns:8fr 4fr;gap:48px;align-items:start}
.scene-figure{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);position:relative;aspect-ratio:4/3;background:var(--bg-2)}
.scene-figure img{width:100%;height:100%;object-fit:cover}
.scene-figure::after{content:"";position:absolute;inset:0;background:rgba(20,32,27,.06)}
.scene-caption{margin-top:12px;font-size:13px;color:var(--faint)}
.scene-list{border-top:1px solid var(--line)}
.scene-item{display:block;padding:22px 0;border-bottom:1px solid var(--line);transition:padding .2s ease}
.scene-item h3{font-size:17px;font-weight:600;line-height:1.5;transition:color .2s ease}
.scene-item p{margin-top:6px;font-size:14px;line-height:1.8;color:var(--muted)}
.scene-item .mini{display:inline-flex;align-items:center;gap:6px;margin-top:10px;font-size:13px;font-weight:600;color:var(--brand)}
.scene-item:hover h3{color:var(--brand)}
.scene-item:hover .mini{color:var(--accent)}
.scene-item:hover .mini .arw{transform:translateX(3px)}
.mini .arw{transition:transform .2s ease}

/* ---------- flow ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative;margin-top:8px}
.flow::before{content:"";position:absolute;left:0;right:0;top:11px;height:1px;background:var(--line-strong)}
.flow-step{padding-right:32px;position:relative}
.flow-dot{width:11px;height:11px;border-radius:50%;background:var(--bg);border:2px solid var(--brand);position:relative;z-index:1;margin-bottom:22px}
.flow-step:nth-child(1) .flow-dot{background:var(--accent);border-color:var(--accent)}
.flow-step h3{font-size:18px;font-weight:600;line-height:1.5}
.flow-step .step-idx{display:block;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;letter-spacing:.12em;color:var(--faint);margin-bottom:6px}
.flow-step p{margin-top:8px;font-size:15px;line-height:1.8;color:var(--muted)}

/* ---------- cms cards ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{display:flex;flex-direction:column;background:#FFFFFF;border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;height:100%}
.post-card:hover{border-color:var(--line-strong);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.post-card .tag{align-self:flex-start;display:inline-block;font-size:12px;letter-spacing:.06em;background:var(--bg-2);color:var(--brand);border-radius:var(--radius-sm);padding:4px 10px}
.post-card h3{margin-top:14px;font-size:20px;line-height:1.5;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card .card-foot{margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--line);font-size:13px;color:var(--faint)}
.post-card .card-foot .read{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand);font-size:13px}
.post-card:hover .card-foot .read{color:var(--accent)}
.post-card:hover .card-foot .read .arw{transform:translateX(3px)}
.post-card .card-foot .read .arw{transition:transform .2s ease}
.post-empty{border:1px dashed var(--line-strong);border-radius:var(--radius-card);padding:48px 24px;text-align:center;background:rgba(255,255,255,.5)}
.post-empty svg{color:var(--line-strong);margin:0 auto 14px}
.post-empty p{font-size:15px;color:var(--muted)}

/* ---------- faq ---------- */
.faq-section{background:var(--bg-2)}
.faq-wrap{max-width:860px;margin:0 auto}
.faq-wrap .section-head{justify-content:flex-start}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line-strong)}
.accordion-item:first-of-type{border-top:1px solid var(--line-strong)}
.accordion-button{background:transparent;box-shadow:none;padding:22px 40px 22px 0;font-size:17px;font-weight:600;color:var(--text);line-height:1.6}
.accordion-button:not(.collapsed){background:transparent;color:var(--brand);box-shadow:none}
.accordion-button:focus{box-shadow:none;border:0}
.accordion-button::after{width:14px;height:14px;background-size:14px;background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 14'%3E%3Cpath d='M7 1v12M1 7h12' stroke='%235A6660' stroke-width='1.4' stroke-linecap='round'/%3E%3C/svg%3E");transition:transform .25s ease}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 14'%3E%3Cpath d='M7 1v12M1 7h12' stroke='%23D2603A' stroke-width='1.4' stroke-linecap='round'/%3E%3C/svg%3E")}
.accordion-body{padding:0 40px 24px 0;font-size:15px;line-height:1.85;color:var(--muted)}

/* ---------- contact ---------- */
.contact-card{background:#FFFFFF;border:1px solid var(--line);border-radius:var(--radius-card);padding:40px;box-shadow:var(--shadow-1)}
.contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.contact-info h2{font-size:clamp(1.5rem,2.6vw,2rem);line-height:1.35;font-weight:700}
.contact-info .lead{margin-top:16px;font-size:18px;line-height:1.85;color:var(--muted)}
.contact-lines{margin-top:32px;border-top:1px solid var(--line)}
.contact-lines div{padding:16px 0;border-bottom:1px solid var(--line);display:flex;gap:16px;align-items:baseline}
.contact-lines dt{font-size:13px;color:var(--faint);min-width:76px;letter-spacing:.04em}
.contact-lines dd{margin:0;font-size:15px;color:var(--text)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field{margin-bottom:20px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}
.field .hint{font-size:13px;color:var(--faint);margin-top:6px;line-height:1.7}
.form-control,.form-select{height:46px;border:1px solid var(--line);border-radius:var(--radius-btn);background:#FFFFFF;color:var(--text);font-size:15px;padding:0 14px;box-shadow:none}
textarea.form-control{height:auto;padding:12px 14px;line-height:1.8;resize:vertical}
.form-control:focus,.form-select:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(29,59,48,.10);outline:none}
.form-control::placeholder{color:var(--faint)}
.check-line{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--muted);line-height:1.7}
.check-line input[type="checkbox"]{width:16px;height:16px;margin-top:4px;accent-color:var(--brand);flex:none}
.form-submit{display:flex;align-items:center;gap:16px;margin-top:8px;flex-wrap:wrap}
.form-submit .note{font-size:13px;color:var(--faint)}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#F7F5F0;padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:4fr 3fr 3fr 3fr;gap:48px;padding-bottom:56px}
.footer-brand .brand{color:#F7F5F0;font-size:17px}
.footer-brand .brand .brand-sub{color:var(--sage)}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.9;color:var(--sage);max-width:26em}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.footer-tags span{font-size:12px;letter-spacing:.04em;color:var(--sage);border:1px solid rgba(247,245,240,.22);border-radius:var(--radius-sm);padding:3px 8px}
.footer-col h3{font-size:13px;letter-spacing:.12em;color:#F7F5F0;font-weight:600;margin-bottom:18px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--sage)}
.footer-col a:hover{color:#F7F5F0}
.footer-col p{font-size:14px;color:var(--sage);line-height:1.9}
.footer-bottom{border-top:1px solid rgba(247,245,240,.16);padding:20px 0 28px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--sage)}
.footer-bottom a:hover{color:#F7F5F0}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .hero-grid{gap:40px}
  .cap-grid{gap:40px}
  .contact-grid{gap:40px}
}
@media (max-width:991.98px){
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .header-actions .btn-outline{display:none}
  .hero{padding:56px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-figure{order:2}
  .hero-meta div{padding-right:20px;margin-right:20px}
  .section{padding:72px 0}
  .cap-grid{grid-template-columns:1fr;gap:32px}
  .scene-grid{grid-template-columns:1fr;gap:32px}
  .flow{grid-template-columns:repeat(2,1fr);gap:40px 0}
  .flow::before{display:none}
  .flow-step{padding-right:24px}
  .flow-dot{margin-bottom:14px}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr;gap:32px}
  .contact-card{padding:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .stats{padding:48px 0}
  .stats-grid{grid-template-columns:1fr 1fr;gap:32px 0}
  .stat{border-left:0;padding:0}
  .stat:nth-child(even){padding-left:24px;border-left:1px solid rgba(247,245,240,.16)}
}
@media (max-width:767.98px){
  .post-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .hero-meta{flex-direction:column;gap:14px}
  .hero-meta div{border-right:0;padding-right:0;margin-right:0;flex-direction:row;align-items:baseline;gap:10px}
  .cap-item{grid-template-columns:40px 1fr;gap:12px}
  .cap-item .chev{display:none}
}
@media (max-width:575.98px){
  .header-inner{height:68px}
  .brand{font-size:16px}
  .hero h1{font-size:1.75rem}
  .hero .hero-sub{font-size:16px}
  .hero-actions .btn{width:100%}
  .section{padding:56px 0}
  .flow{grid-template-columns:1fr;gap:0;padding-left:22px;position:relative}
  .flow::before{display:block;left:5px;top:6px;bottom:6px;right:auto;width:1px;height:auto}
  .flow-step{padding:0 0 32px 0;margin:0}
  .flow-dot{position:absolute;left:-22px;top:6px;margin:0}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .contact-card{padding:22px}
  .accordion-button{font-size:16px;padding-right:32px}
  .accordion-body{padding-right:8px}
  .post-card{padding:20px}
}

/* roulang page: article */
:root{
  --bg:#F7F5F0;
  --bg-2:#EFEBE2;
  --ink:#14201B;
  --text:#1B2420;
  --muted:#5A6660;
  --faint:#8A928B;
  --line:#DED9CE;
  --line-strong:#C4BDAD;
  --brand:#1D3B30;
  --accent:#D2603A;
  --sage:#7E9A8C;
  --paper:#FFFFFF;
  --radius-tag:4px;
  --radius-btn:6px;
  --radius-card:8px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(20,32,27,.04);
  --shadow-2:0 10px 30px rgba(20,32,27,.07);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-wrap:break-word;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease}
button{font:inherit;cursor:pointer;border:0;background:none}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{list-style:none;padding:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,245,240,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,border-color .25s ease;
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px}
.brand{display:inline-flex;align-items:center;gap:6px;font-weight:700;letter-spacing:.02em;line-height:1}
.brand-main{font-size:17px;color:var(--ink)}
.brand-sub{font-size:17px;color:var(--brand)}
.brand-tag{
  font-size:10px;font-weight:600;letter-spacing:.08em;
  color:var(--brand);background:var(--bg-2);
  border:1px solid var(--line);border-radius:4px;
  padding:2px 6px;line-height:1.5;margin-left:4px;
}
.main-nav{display:flex;align-items:center;gap:28px}
.main-nav a{position:relative;font-size:15px;color:var(--muted);padding:6px 0}
.main-nav a:hover{color:var(--brand)}
.main-nav a.active{color:var(--ink);font-weight:600}
.main-nav a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;
  height:2px;background:var(--accent);
}
.header-actions{display:flex;align-items:center;gap:14px}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;border:1px solid var(--line-strong);
  border-radius:6px;background:transparent;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);margin:0 auto;transition:transform .25s ease,background .25s ease}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  background:var(--brand);color:#F7F5F0;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn:hover{background:var(--accent);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn:active{transform:translateY(0);box-shadow:none}
.btn-outline{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-outline:hover{background:var(--bg-2);border-color:var(--brand);color:var(--brand);transform:translateY(-1px);box-shadow:none}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.link-arrow span.arw{transition:transform .2s ease;font-size:12px}
.link-arrow:hover{color:var(--accent)}
.link-arrow:hover span.arw{transform:translateX(3px)}

/* ---------- tags / badges ---------- */
.tag{
  display:inline-flex;align-items:center;
  font-size:12.5px;letter-spacing:.06em;
  background:var(--bg-2);color:var(--brand);
  border-radius:var(--radius-tag);padding:4px 10px;
}

/* ---------- article hero ---------- */
.article-hero{background:var(--bg-2);border-bottom:1px solid var(--line);padding:48px 0 56px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:26px}
.crumbs a:hover{color:var(--accent)}
.crumbs .sep{color:var(--faint)}
.crumbs .current{color:var(--faint);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-hero .tag{background:var(--paper);border:1px solid var(--line);margin-bottom:20px}
.article-hero h1{
  font-size:clamp(1.75rem,3.6vw,2.5rem);
  line-height:1.3;font-weight:700;letter-spacing:-.01em;
  color:var(--ink);max-width:920px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:24px;font-size:13px;color:var(--muted)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--line-strong)}
.meta-row .strong{color:var(--brand);font-weight:600}

/* ---------- article layout ---------- */
.article-body{padding:64px 0 0}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 304px;gap:56px;align-items:start}
.article-main{min-width:0;max-width:760px}
.cover-figure{margin:0 0 44px}
.cover-figure img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border-radius:var(--radius-img);border:1px solid var(--line);
  background:var(--bg-2);
}
.cover-figure figcaption{margin-top:12px;font-size:13px;color:var(--faint)}

/* ---------- prose ---------- */
.prose{font-size:17px;line-height:1.9;color:var(--text)}
.prose > * + *{margin-top:1.15em}
.prose h2{
  font-size:24px;line-height:1.45;font-weight:700;color:var(--ink);
  margin-top:2.2em;margin-bottom:.8em;padding-left:14px;
  border-left:3px solid var(--accent);
}
.prose h3{font-size:20px;line-height:1.5;font-weight:600;color:var(--ink);margin-top:1.8em;margin-bottom:.6em}
.prose h4{font-size:17px;font-weight:600;color:var(--brand);margin-top:1.5em;margin-bottom:.5em}
.prose p{margin:0}
.prose ul,.prose ol{padding-left:0}
.prose ul li{position:relative;padding-left:20px;margin:.5em 0}
.prose ul li::before{
  content:"";position:absolute;left:0;top:.8em;
  width:6px;height:6px;border-radius:50%;background:var(--sage);
}
.prose ol{counter-reset:item;padding-left:0}
.prose ol li{position:relative;padding-left:28px;margin:.5em 0;counter-increment:item}
.prose ol li::before{
  content:counter(item,decimal-leading-zero);
  position:absolute;left:0;top:0;font-size:13px;font-weight:600;
  color:var(--accent);letter-spacing:.04em;
}
.prose blockquote{
  padding:20px 24px;background:var(--bg-2);
  border-left:2px solid var(--accent);
  border-radius:0 var(--radius-card) var(--radius-card) 0;
  color:var(--muted);
}
.prose blockquote p{color:var(--muted)}
.prose img{border-radius:8px;margin:1.6em auto}
.prose figure{margin:1.8em 0}
.prose figure figcaption{font-size:13px;color:var(--faint);text-align:center;margin-top:10px}
.prose a{color:var(--brand);border-bottom:1px solid var(--line-strong)}
.prose a:hover{color:var(--accent);border-color:var(--accent)}
.prose strong{font-weight:600;color:var(--brand)}
.prose table{width:100%;border-collapse:collapse;font-size:15px;margin:1.6em 0}
.prose th,.prose td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top}
.prose th{background:var(--bg-2);font-weight:600;color:var(--ink)}
.prose hr{border:0;border-top:1px solid var(--line);margin:2em 0}

/* ---------- tag row ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:56px;padding-top:28px;border-top:1px solid var(--line)}
.tag-row .label{font-size:12px;letter-spacing:.14em;color:var(--faint);margin-right:4px}

/* ---------- sidebar ---------- */
.sidebar{min-width:0}
.side-sticky{position:sticky;top:100px;display:grid;gap:24px}
.side-card{
  background:var(--paper);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:24px;
  box-shadow:var(--shadow-1);
}
.side-title{font-size:13px;letter-spacing:.14em;color:var(--faint);font-weight:600;margin-bottom:16px}
.side-links li + li{border-top:1px solid var(--line)}
.side-links a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 0;font-size:14.5px;color:var(--text)}
.side-links a::after{content:"›";color:var(--line-strong);transition:color .2s ease,transform .2s ease}
.side-links a:hover{color:var(--accent)}
.side-links a:hover::after{color:var(--accent);transform:translateX(2px)}
.side-text{font-size:14px;line-height:1.85;color:var(--muted);margin-bottom:16px}

/* ---------- empty state ---------- */
.empty-state{
  border:1px dashed var(--line-strong);border-radius:var(--radius-card);
  background:var(--paper);padding:64px 32px;text-align:center;
}
.empty-state .mark{
  width:44px;height:44px;margin:0 auto 20px;border:1px solid var(--line-strong);
  border-radius:50%;display:flex;align-items:center;justify-content:center;
  color:var(--faint);font-size:18px;
}
.empty-state h2{font-size:20px;font-weight:600;color:var(--ink);margin-bottom:10px}
.empty-state p{font-size:15px;color:var(--muted);margin-bottom:26px}

/* ---------- related ---------- */
.related{padding:96px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;border-top:1px solid var(--line);padding-top:32px;margin-bottom:36px}
.section-head h2{font-size:24px;font-weight:700;color:var(--ink);line-height:1.4}
.section-head p{font-size:14px;color:var(--muted);margin-top:6px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{
  display:flex;flex-direction:column;
  background:var(--paper);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.post-card:hover{border-color:var(--line-strong);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.post-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--bg-2)}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.post-card:hover .thumb img{transform:scale(1.03)}
.post-card .body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-card h3{font-size:18px;line-height:1.55;font-weight:600;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card p{font-size:14px;line-height:1.8;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card .card-foot{margin-top:auto;padding-top:6px}

/* ---------- back row ---------- */
.back-row{display:flex;justify-content:center;margin-top:56px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#D9DED9;padding:72px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:56px}
.footer-brand .brand{display:inline-flex;align-items:center;gap:6px;font-weight:700;letter-spacing:.02em;margin-bottom:18px}
.site-footer .brand-main{font-size:18px;color:#F4F1EA}
.site-footer .brand-sub{font-size:18px;color:#A9C1B4}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--sage);max-width:330px}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.footer-tags span{
  font-size:12px;letter-spacing:.06em;color:#C9D4CC;
  border:1px solid rgba(255,255,255,.14);border-radius:4px;padding:3px 9px;
}
.footer-col h3{font-size:14px;font-weight:600;letter-spacing:.04em;color:#E9EDE8;margin-bottom:18px}
.footer-col ul li{margin-bottom:11px}
.footer-col ul li:last-child{margin-bottom:0}
.footer-col a{font-size:14px;color:var(--sage)}
.footer-col a:hover{color:#F7F5F0}
.footer-col p{font-size:14px;line-height:1.85;color:var(--sage);margin-bottom:16px;max-width:280px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 28px;display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;font-size:13px;color:#8A928B;
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:40px}
  .related-grid{gap:20px}
}
@media (max-width:991px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:48px}
  .article-main{max-width:none}
  .side-sticky{position:static}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .main-nav{
    position:fixed;inset:0;z-index:1025;
    display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:0;padding:112px 32px 40px;
    background:var(--ink);
    transform:translateX(100%);opacity:0;visibility:hidden;
    transition:transform .3s ease,opacity .3s ease,visibility .3s ease;
  }
  body.menu-open .main-nav{transform:translateX(0);opacity:1;visibility:visible}
  body.menu-open{overflow:hidden}
  .main-nav a{
    display:flex;align-items:center;width:100%;
    font-size:22px;font-weight:600;color:#F2F0EA;
    padding:20px 0;border-bottom:1px solid rgba(255,255,255,.12);
  }
  .main-nav a:hover{color:#fff}
  .main-nav a.active{color:#fff}
  .main-nav a.active::after{display:none}
  .main-nav a.active::before{
    content:"";width:6px;height:6px;border-radius:50%;
    background:var(--accent);margin-right:12px;flex:0 0 auto;
  }
  .nav-toggle{display:flex;position:relative;z-index:1040}
  body.menu-open .site-header{background:var(--ink);border-bottom-color:rgba(255,255,255,.12)}
  body.menu-open .brand-main{color:#F4F1EA}
  body.menu-open .brand-sub{color:#A9C1B4}
  body.menu-open .brand-tag{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.18);color:#C9D4CC}
  body.menu-open .nav-toggle{border-color:rgba(255,255,255,.32)}
  body.menu-open .nav-toggle span{background:#F4F1EA}
  body.menu-open .nav-toggle span:first-child{transform:translateY(3.5px) rotate(45deg)}
  body.menu-open .nav-toggle span:last-child{transform:translateY(-3.5px) rotate(-45deg)}
  body.menu-open .header-actions .btn-outline{color:#F4F1EA;border-color:rgba(255,255,255,.35)}
  .article-hero{padding:40px 0 44px}
  .article-body{padding:48px 0 0}
  .prose{font-size:16.5px}
  .related{padding:72px 0 0}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .header-inner{min-height:68px;gap:14px}
  .brand-main,.brand-sub{font-size:16px}
  .header-actions .btn-sm{display:none}
  .article-hero h1{font-size:clamp(1.5rem,6vw,1.9rem)}
  .cover-figure{margin-bottom:32px}
  .prose h2{font-size:21px;padding-left:12px}
  .prose h3{font-size:18px}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
  .footer-grid{grid-template-columns:1fr;gap:36px;padding-bottom:40px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:575px){
  .related-grid{grid-template-columns:1fr}
  .article-hero{padding:32px 0 36px}
  .meta-row{gap:10px;font-size:12.5px}
  .btn{width:100%}
  .back-row .btn{width:100%}
  .empty-state{padding:48px 20px}
  .post-card .body{padding:20px}
  .site-footer{padding:56px 0 0;margin-top:64px}
}

/* roulang page: category1 */
:root{
  --bg:#F7F5F0;
  --bg-2:#EFEBE2;
  --ink:#14201B;
  --text:#1B2420;
  --muted:#5A6660;
  --faint:#8A928B;
  --line:#DED9CE;
  --line-strong:#C4BDAD;
  --brand:#1D3B30;
  --accent:#D2603A;
  --sage:#7E9A8C;
  --paper:#F7F5F0;
  --r-sm:4px;
  --r-md:6px;
  --r-card:8px;
  --r-lg:12px;
  --shadow-1:0 1px 2px rgba(20,32,27,.04);
  --shadow-2:0 10px 30px rgba(20,32,27,.07);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;

  --bs-body-bg:#F7F5F0;
  --bs-body-color:#1B2420;
  --bs-border-color:#DED9CE;
  --bs-primary:#1D3B30;
  --bs-primary-rgb:29,59,48;
  --bs-link-color:#1D3B30;
  --bs-link-hover-color:#D2603A;
  --bs-border-radius:6px;
  --bs-border-radius-sm:4px;
  --bs-border-radius-lg:8px;
  --bs-body-font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --bs-body-font-size:16px;
  --bs-body-line-height:1.9;
  --bs-emphasis-color:#1B2420;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  overflow-wrap:break-word;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.3}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(247,245,240,.94);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:32px;
  min-height:76px;
}
.brand{
  display:inline-flex;
  align-items:center;
  flex-wrap:wrap;
  gap:2px;
  font-size:17px;
  font-weight:700;
  letter-spacing:.02em;
  line-height:1.2;
  color:var(--text);
}
.brand .brand-main{color:var(--text)}
.brand .brand-sub{color:var(--brand)}
.brand-tag{
  display:inline-block;
  margin-left:8px;
  padding:2px 6px;
  font-size:10px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--muted);
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  line-height:1.5;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:30px;
  margin-left:auto;
}
.main-nav a{
  position:relative;
  padding:6px 0;
  font-size:15px;
  color:var(--muted);
  white-space:nowrap;
}
.main-nav a:hover{color:var(--text)}
.main-nav a.active{color:var(--text);font-weight:600}
.main-nav a.active::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-6px;
  height:2px;
  background:var(--accent);
  border-radius:2px;
}
.header-actions{
  display:flex;
  align-items:center;
  gap:14px;
  position:relative;
  z-index:1200;
}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  padding:0;
  border:1px solid var(--line-strong);
  border-radius:var(--r-md);
  background:transparent;
  cursor:pointer;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  transition:border-color .2s ease,background-color .2s ease;
}
.nav-toggle:hover{border-color:var(--brand);background:var(--bg-2)}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  background:var(--text);
  transition:transform .25s ease;
}
body.menu-open .nav-toggle span:first-child{transform:translateY(3.5px) rotate(45deg)}
body.menu-open .nav-toggle span:last-child{transform:translateY(-3.5px) rotate(-45deg)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 26px;
  border:1px solid transparent;
  border-radius:var(--r-md);
  background:var(--brand);
  color:var(--paper);
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:background-color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease,color .2s ease;
}
.btn:hover{background:var(--accent);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn:active{transform:none;box-shadow:none}
.btn-outline{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-outline:hover{
  background:var(--bg-2);
  border-color:var(--brand);
  color:var(--brand);
  box-shadow:none;
  transform:translateY(-1px);
}
.btn-light{background:var(--paper);color:var(--ink)}
.btn-light:hover{background:var(--accent);color:#fff}
.btn-ghost{
  background:transparent;
  border-color:rgba(247,245,240,.38);
  color:var(--paper);
}
.btn-ghost:hover{background:rgba(247,245,240,.12);border-color:var(--paper);color:var(--paper);box-shadow:none}
.btn-sm{height:40px;padding:0 18px;font-size:14px}

/* ============ 通用板块 ============ */
.section{padding:96px 0;border-top:1px solid var(--line)}
.section--tint{background:var(--bg-2)}
.section--ink{background:var(--ink);color:#EFEBE2;border-top:0}
.section--first{border-top:0}
.section-head{max-width:760px;margin-bottom:40px}
.eyebrow{
  display:inline-block;
  margin-bottom:14px;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--faint);
  font-weight:600;
}
.section-head h2{
  font-size:clamp(1.5rem,2.4vw,2rem);
  margin-bottom:16px;
  color:var(--text);
}
.section-head p{font-size:16px;color:var(--muted);line-height:1.85;margin:0}
.section--ink .section-head h2{color:var(--paper)}
.section--ink .section-head p{color:#B9C6BE}
.section--ink .eyebrow{color:var(--sage)}

/* ============ 首屏 ============ */
.hero{
  padding:72px 0 56px;
  background:var(--bg-2);
}
.crumbs{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  margin-bottom:26px;
}
.crumbs a:hover{color:var(--accent)}
.crumbs .sep{color:var(--faint)}
.crumbs .current{color:var(--text)}
.hero-grid{
  display:grid;
  grid-template-columns:1.12fr .88fr;
  gap:56px;
  align-items:center;
}
.hero h1{
  font-size:clamp(1.9rem,4vw,3.25rem);
  line-height:1.24;
  letter-spacing:-.01em;
  margin-bottom:20px;
  color:var(--text);
}
.hero-lead{
  font-size:18px;
  line-height:1.85;
  color:var(--muted);
  max-width:620px;
  margin:0;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:30px;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:0;
  margin-top:34px;
  padding-top:22px;
  border-top:1px solid var(--line-strong);
}
.hero-meta div{
  padding-right:26px;
  margin-right:26px;
  border-right:1px solid var(--line-strong);
}
.hero-meta div:last-child{border-right:0;margin-right:0;padding-right:0}
.hero-meta strong{display:block;font-size:20px;font-weight:700;color:var(--brand);line-height:1.4}
.hero-meta span{font-size:13px;color:var(--muted)}
.hero-figure{margin:0}
.hero-figure .fig-box{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line-strong);
  background:var(--bg);
}
.hero-figure img{
  width:100%;
  aspect-ratio:16 / 11;
  object-fit:cover;
}
.hero-figure figcaption{
  margin-top:12px;
  font-size:13px;
  color:var(--faint);
  line-height:1.7;
}

/* ============ 要点网格 ============ */
.grid-entries{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.entry{
  display:flex;
  gap:16px;
  padding:24px;
  background:#FFFFFF;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.entry:hover{
  border-color:var(--line-strong);
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
}
.entry-dot{
  flex:none;
  width:6px;
  height:6px;
  margin-top:11px;
  border-radius:50%;
  background:var(--accent);
}
.entry-body h3{
  font-size:18px;
  line-height:1.5;
  margin-bottom:8px;
  color:var(--text);
}
.entry-body p{
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
  margin:0 0 12px;
}
.entry-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--brand);
}
.entry-link .arrow{transition:transform .2s ease}
.entry-link:hover{color:var(--accent)}
.entry-link:hover .arrow{transform:translateX(3px)}
.section-foot{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:16px;
  margin-top:36px;
  padding-top:24px;
  border-top:1px solid var(--line);
  font-size:15px;
  color:var(--muted);
}

/* ============ 流程 ============ */
.flow{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  border-top:1px solid var(--line-strong);
  margin-top:8px;
}
.step{
  position:relative;
  padding:32px 26px 0 0;
}
.step::before{
  content:"";
  position:absolute;
  top:-5px;
  left:0;
  width:9px;
  height:9px;
  border-radius:50%;
  background:var(--bg);
  border:2px solid var(--brand);
}
.step-num{
  display:block;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--accent);
  margin-bottom:10px;
  font-weight:600;
}
.step h3{font-size:18px;line-height:1.5;margin-bottom:8px}
.step p{font-size:15px;color:var(--muted);line-height:1.8;margin:0}

/* ============ 深色要点带 ============ */
.band-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0;
  border-top:1px solid rgba(247,245,240,.2);
  padding-top:40px;
  margin-top:8px;
}
.band-item{padding:0 32px;border-left:1px solid rgba(247,245,240,.16)}
.band-item:first-child{border-left:0;padding-left:0}
.band-item:last-child{padding-right:0}
.band-num{
  display:block;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--sage);
  margin-bottom:12px;
}
.band-item h3{font-size:19px;color:var(--paper);margin-bottom:10px}
.band-item p{font-size:15px;line-height:1.8;color:#B9C6BE;margin:0}

/* ============ 图文分栏 ============ */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.split-figure{margin:0}
.split-figure .fig-box{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:#FFFFFF;
}
.split-figure img{width:100%;aspect-ratio:4 / 3;object-fit:cover}
.split-figure figcaption{margin-top:12px;font-size:13px;color:var(--faint)}
.check-list li{
  display:flex;
  gap:14px;
  padding:18px 0;
  border-bottom:1px solid var(--line);
  font-size:16px;
  line-height:1.8;
}
.check-list li:first-child{padding-top:0}
.check-list li:last-child{border-bottom:0;padding-bottom:0}
.check-list .tick{
  flex:none;
  width:6px;
  height:6px;
  margin-top:12px;
  border-radius:50%;
  background:var(--sage);
}
.check-list strong{display:block;font-weight:600;color:var(--text)}
.check-list span.desc{display:block;font-size:15px;color:var(--muted)}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px}
.faq-wrap .accordion{
  --bs-accordion-border-color:transparent;
  --bs-accordion-border-width:0;
  --bs-accordion-bg:transparent;
  --bs-accordion-btn-bg:transparent;
  --bs-accordion-active-bg:transparent;
  --bs-accordion-active-color:#1D3B30;
  --bs-accordion-btn-color:#1B2420;
  --bs-accordion-btn-focus-box-shadow:none;
  --bs-accordion-border-radius:0;
  --bs-accordion-inner-border-radius:0;
  --bs-accordion-btn-padding-y:22px;
  --bs-accordion-btn-padding-x:0;
  --bs-accordion-body-padding-x:0;
  --bs-accordion-body-padding-y:0;
}
.faq-wrap .accordion-item{
  background:transparent;
  border:0;
  border-top:1px solid var(--line-strong);
}
.faq-wrap .accordion-item:last-child{border-bottom:1px solid var(--line-strong)}
.faq-wrap .accordion-button{
  padding:22px 40px 22px 0;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  line-height:1.6;
  background:transparent;
  border-radius:0;
  box-shadow:none;
}
.faq-wrap .accordion-button:not(.collapsed){
  color:var(--brand);
  background:transparent;
  box-shadow:none;
}
.faq-wrap .accordion-button::after{
  content:"+";
  flex:none;
  width:20px;
  height:20px;
  margin-left:auto;
  background-image:none !important;
  font-size:20px;
  line-height:1;
  font-weight:400;
  color:var(--accent);
  display:flex;
  align-items:center;
  justify-content:center;
  transition:transform .25s ease,color .2s ease;
}
.faq-wrap .accordion-button:not(.collapsed)::after{
  transform:rotate(45deg);
  color:var(--brand);
  background-image:none !important;
}
.faq-wrap .accordion-button:focus{
  outline:2px solid var(--accent);
  outline-offset:2px;
  box-shadow:none;
}
.faq-wrap .accordion-body{
  padding:0 0 24px;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
}

/* ============ CTA 带 ============ */
.cta-band{background:var(--ink);color:#EFEBE2;padding:64px 0}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
}
.cta-text h2{
  font-size:clamp(1.35rem,2.2vw,1.75rem);
  color:var(--paper);
  margin-bottom:12px;
}
.cta-text p{font-size:15px;color:#B9C6BE;margin:0;max-width:640px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 联系区 ============ */
.contact-grid{
  display:grid;
  grid-template-columns:.85fr 1.15fr;
  gap:48px;
  align-items:start;
}
.contact-info h2{font-size:clamp(1.4rem,2.2vw,1.75rem);margin-bottom:16px}
.contact-info > p{font-size:16px;color:var(--muted);line-height:1.85}
.contact-points{margin-top:26px}
.contact-points li{
  padding:16px 0;
  border-top:1px solid var(--line);
  font-size:15px;
  color:var(--muted);
  line-height:1.8;
}
.contact-points li strong{display:block;color:var(--text);font-weight:600;margin-bottom:2px}
.contact-card{
  background:#FFFFFF;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:36px;
}
.form-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
  margin-bottom:20px;
}
.form-field{margin-bottom:20px}
.form-field:last-of-type{margin-bottom:0}
.form-label{
  display:block;
  font-size:14px;
  font-weight:600;
  color:var(--text);
  margin-bottom:8px;
}
.form-control,
.form-select{
  width:100%;
  min-height:46px;
  padding:10px 14px;
  font-size:15px;
  line-height:1.6;
  color:var(--text);
  background:#FFFFFF;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  transition:border-color .2s ease,box-shadow .2s ease;
}
textarea.form-control{min-height:110px;resize:vertical}
.form-control::placeholder{color:var(--faint)}
.form-control:focus,
.form-select:focus{
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(29,59,48,.10);
  outline:none;
}
.form-hint{font-size:13px;color:var(--faint);margin-top:8px;line-height:1.7}
.form-check{display:flex;align-items:flex-start;gap:10px;margin:20px 0 22px;font-size:13px;color:var(--muted);line-height:1.7}
.form-check input{margin-top:5px;flex:none;width:16px;height:16px;accent-color:var(--brand)}
.form-submit{width:100%}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink);
  color:#B9C6BE;
  padding:72px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:56px;
}
.footer-brand .brand{
  display:inline-flex;
  font-size:17px;
  font-weight:700;
  color:var(--paper);
  margin-bottom:16px;
}
.footer-brand .brand .brand-main{color:var(--paper)}
.footer-brand .brand .brand-sub{color:#A9C0B4}
.footer-brand p{font-size:14px;line-height:1.9;color:#9EAEA5;margin:0 0 18px;max-width:340px}
.footer-tags span{
  display:inline-block;
  margin:0 8px 8px 0;
  padding:3px 10px;
  font-size:12px;
  letter-spacing:.04em;
  color:#B9C6BE;
  border:1px solid rgba(247,245,240,.22);
  border-radius:var(--r-sm);
}
.footer-col h3{
  font-size:14px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--paper);
  margin-bottom:18px;
}
.footer-col p{font-size:14px;line-height:1.9;color:#9EAEA5;margin:0 0 14px}
.footer-col li{margin-bottom:2px}
.footer-col a{
  font-size:14px;
  line-height:2.2;
  color:#B9C6BE;
}
.footer-col a:hover{color:var(--paper)}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  justify-content:space-between;
  padding:22px 0;
  border-top:1px solid rgba(247,245,240,.14);
  font-size:13px;
  color:#8E9C94;
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .main-nav{gap:22px}
}
@media (max-width:991px){
  .section{padding:72px 0}
  .hero{padding:56px 0 48px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-figure{order:2}
  .hero-lead{max-width:none}
  .split{grid-template-columns:1fr;gap:36px}
  .contact-grid{grid-template-columns:1fr;gap:32px}
  .flow{grid-template-columns:repeat(2,1fr);row-gap:8px}
  .step{padding:32px 24px 0 0}
  .step:nth-child(3),.step:nth-child(4){margin-top:20px}
  .band-grid{grid-template-columns:1fr;gap:0;border-top:0;padding-top:0}
  .band-item{
    border-left:0;
    border-top:1px solid rgba(247,245,240,.16);
    padding:24px 0 0;
    margin-top:24px;
  }
  .band-item:first-child{border-top:0;margin-top:0;padding-top:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}

  .nav-toggle{display:flex}
  .header-actions .btn-outline{display:none}
  .main-nav{
    position:fixed;
    top:0;
    left:0;
    right:0;
    bottom:0;
    z-index:1100;
    flex-direction:column;
    align-items:stretch;
    justify-content:center;
    gap:0;
    margin:0;
    padding:88px 32px 48px;
    background:var(--ink);
    transform:translateX(100%);
    transition:transform .3s ease;
    overflow-y:auto;
  }
  body.menu-open{overflow:hidden}
  body.menu-open .main-nav{transform:none}
  .main-nav a{
    width:100%;
    padding:20px 0;
    font-size:22px;
    font-weight:600;
    color:var(--paper);
    border-bottom:1px solid rgba(247,245,240,.14);
    white-space:normal;
  }
  .main-nav a:first-child{border-top:1px solid rgba(247,245,240,.14)}
  .main-nav a.active{color:var(--paper)}
  .main-nav a.active::after{display:none}
  .main-nav a.active::before{
    content:"";
    display:inline-block;
    width:6px;
    height:6px;
    border-radius:50%;
    background:var(--accent);
    margin-right:12px;
    vertical-align:middle;
  }
  .header-actions .nav-toggle{border-color:var(--line-strong)}
  body.menu-open .nav-toggle{border-color:rgba(247,245,240,.5)}
  body.menu-open .nav-toggle span{background:var(--paper)}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .header-inner{min-height:66px;gap:14px}
  .brand{font-size:16px}
  .brand-tag{font-size:9px;padding:1px 5px}
  .grid-entries{grid-template-columns:1fr;gap:16px}
  .entry{padding:20px}
  .hero-meta{gap:0;flex-wrap:wrap}
  .hero-meta div{padding-right:18px;margin-right:18px;margin-bottom:10px}
  .hero-meta strong{font-size:18px}
  .hero-actions .btn{width:100%}
  .form-row{grid-template-columns:1fr;gap:0;margin-bottom:0}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:40px}
  .site-footer{padding-top:56px}
  .contact-card{padding:24px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions .btn{width:100%}
  .faq-wrap .accordion-button{font-size:16px;padding-right:32px}
}
@media (max-width:519px){
  .hero h1{font-size:1.72rem}
  .hero-lead{font-size:16px}
  .hero-meta div{border-right:0;padding-right:0;margin-right:0;width:100%}
  .hero-meta div span{display:inline}
  .flow{grid-template-columns:1fr}
  .step{padding:28px 0 0;border-top:1px solid var(--line)}
  .step:first-child{border-top:0;padding-top:24px}
  .step::before{top:-5px;left:0}
  .step:nth-child(3),.step:nth-child(4){margin-top:0}
  .section-head{margin-bottom:28px}
}

/* roulang page: category2 */
:root{
  --bg:#F7F5F0;--bg-2:#EFEBE2;--ink:#14201B;
  --text:#1B2420;--muted:#5A6660;--faint:#8A928B;
  --line:#DED9CE;--line-strong:#C4BDAD;
  --brand:#1D3B30;--accent:#D2603A;--sage:#7E9A8C;
  --r-sm:4px;--r-md:6px;--r-card:8px;--r-img:12px;
  --shadow-1:0 1px 2px rgba(20,32,27,.04);
  --shadow-2:0 10px 30px rgba(20,32,27,.07);
  --bs-body-bg:#F7F5F0;--bs-body-color:#1B2420;--bs-border-color:#DED9CE;
  --bs-primary:#1D3B30;--bs-primary-rgb:29,59,48;--bs-link-color:#1D3B30;
  --bs-link-hover-color:#D2603A;--bs-border-radius:6px;
  --bs-body-font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.9;-webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{list-style:none;padding:0}
button{font:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{width:100%;max-width:1240px;margin-inline:auto;padding-inline:24px}

/* ============ header ============ */
.site-header{position:sticky;top:0;z-index:100;background:rgba(247,245,240,.97);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;min-height:76px}
.brand{display:inline-flex;align-items:center;gap:6px;line-height:1.2;flex-wrap:wrap}
.brand-main,.brand-sub{font-size:18px;font-weight:700;letter-spacing:.02em}
.brand-main{color:var(--brand)}
.brand-sub{color:var(--muted)}
.brand-tag{font-size:10px;letter-spacing:.12em;color:var(--brand);background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-sm);padding:2px 6px;margin-left:8px;transform:translateY(-1px);white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:auto}
.main-nav a{position:relative;font-size:15px;color:var(--muted);padding:6px 0;white-space:nowrap}
.main-nav a::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .25s ease}
.main-nav a:hover{color:var(--text)}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1)}
.main-nav a.active{color:var(--brand);font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px;position:relative;z-index:120}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 26px;border-radius:var(--r-md);border:1px solid transparent;background:transparent;color:var(--text);font-size:15px;font-weight:600;transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease}
.btn-outline{border-color:var(--line-strong);color:var(--text)}
.btn-outline:hover{border-color:var(--brand);background:var(--bg-2);color:var(--brand);transform:translateY(-1px)}
.btn-solid{background:var(--brand);border-color:var(--brand);color:#F7F5F0}
.btn-solid:hover{background:var(--accent);border-color:var(--accent);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-solid:active{transform:translateY(0);box-shadow:none}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line-strong);border-radius:var(--r-md);background:transparent;flex-direction:column;align-items:center;justify-content:center;gap:5px;transition:border-color .2s ease,background .2s ease}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--text);transition:background .2s ease,transform .2s ease}
.nav-toggle:hover{border-color:var(--brand)}
.nav-toggle.is-open{border-color:rgba(247,245,240,.45);background:rgba(247,245,240,.08)}
.nav-toggle.is-open span{background:#F7F5F0}

/* ============ hero ============ */
.page-hero{background:var(--bg-2);border-bottom:1px solid var(--line);padding:52px 0 64px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:28px}
.crumbs a:hover{color:var(--accent)}
.crumbs .sep{color:var(--faint)}
.crumbs .here{color:var(--text)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:56px;align-items:center}
.eyebrow{display:flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.14em;color:var(--faint);margin-bottom:16px}
.eyebrow::before{content:"";width:32px;height:1px;background:var(--accent)}
.page-title{font-size:clamp(1.9rem,4vw,3rem);line-height:1.24;font-weight:700;letter-spacing:-.01em;color:var(--text)}
.page-lead{font-size:18px;line-height:1.85;color:var(--muted);margin-top:18px;max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-facts{display:flex;flex-wrap:wrap;margin-top:34px;padding-top:20px;border-top:1px solid var(--line-strong)}
.hero-facts li{font-size:13px;color:var(--muted);padding-right:22px;margin-right:22px;border-right:1px solid var(--line-strong)}
.hero-facts li:last-child{border-right:0;margin-right:0;padding-right:0}
.hero-facts strong{color:var(--brand);font-weight:600}
.check-panel{background:#FFFFFF;border:1px solid var(--line);border-radius:var(--r-img);padding:26px;box-shadow:var(--shadow-1)}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.panel-title{font-size:15px;font-weight:600;color:var(--brand)}
.status-badge{font-size:11px;letter-spacing:.08em;color:var(--brand);background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-sm);padding:3px 8px;white-space:nowrap}
.check-list li{display:flex;gap:12px;padding:16px 0;border-bottom:1px dashed var(--line)}
.check-list li:last-child{border-bottom:0;padding-bottom:0}
.dot{flex:0 0 6px;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-top:9px}
.check-title{font-size:15px;font-weight:600;margin-bottom:2px}
.check-list p{font-size:13px;line-height:1.75;color:var(--muted)}
.panel-note{font-size:12px;color:var(--faint);margin-top:18px;padding-top:14px;border-top:1px solid var(--line)}

/* ============ sections ============ */
.section{padding:96px 0}
.section-head{max-width:740px;margin-bottom:48px}
.kicker{display:flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.14em;color:var(--faint);margin-bottom:14px}
.kicker::before{content:"";width:32px;height:1px;background:var(--accent)}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1.32;font-weight:700;letter-spacing:-.01em}
.section-head p{margin-top:14px;font-size:16px;color:var(--muted);line-height:1.85}

/* flow */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;border-top:1px solid var(--line-strong);padding-top:44px;padding-bottom:32px}
.flow-item{position:relative;padding-right:12px}
.flow-item::before{content:"";position:absolute;left:0;top:-44px;width:1px;height:20px;background:var(--line-strong)}
.flow-item:nth-child(even){transform:translateY(32px)}
.flow-item:nth-child(even)::before{top:-76px;height:52px}
.flow-num{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;letter-spacing:.14em;color:var(--accent);margin-bottom:12px}
.flow-item h3{font-size:18px;font-weight:600;line-height:1.5;margin-bottom:10px}
.flow-item p{font-size:15px;line-height:1.85;color:var(--muted)}
.flow-item .mini{font-size:13px;color:var(--faint);margin-top:12px;line-height:1.75}

/* split */
.split{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:56px;align-items:center}
.media-frame{border:1px solid var(--line);border-radius:var(--r-img);overflow:hidden;background:var(--bg-2);box-shadow:var(--shadow-1)}
.media-frame img{width:100%;aspect-ratio:4/3;object-fit:cover}
.media-caption{font-size:13px;color:var(--faint);margin-top:12px}
.scene-list li{display:grid;grid-template-columns:auto minmax(0,1fr);gap:16px;padding:22px 0;border-bottom:1px solid var(--line)}
.scene-list li:first-child{padding-top:0}
.scene-list li:last-child{border-bottom:0}
.scene-index{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;letter-spacing:.1em;color:var(--accent);padding-top:5px}
.scene-list h3{font-size:17px;font-weight:600;margin-bottom:6px}
.scene-list p{font-size:15px;line-height:1.85;color:var(--muted)}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);margin-top:22px}
.text-link span{transition:transform .2s ease}
.text-link:hover{color:var(--accent)}
.text-link:hover span{transform:translateX(3px)}

/* notice table */
.notice-table{border-top:1px solid var(--line-strong)}
.notice-row{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.6fr);gap:32px;padding:22px 12px;border-bottom:1px solid var(--line);transition:background .2s ease}
.notice-row:hover{background:var(--bg-2)}
.notice-row dt{font-size:15px;font-weight:600;display:flex;align-items:flex-start;gap:10px}
.notice-row dt .dot{margin-top:9px}
.notice-row dd{font-size:15px;line-height:1.85;color:var(--muted)}

/* ink band */
.ink-band{background:var(--ink);color:#F7F5F0;padding:76px 0}
.ink-band .kicker{color:var(--sage)}
.ink-band h2{font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1.32;font-weight:700;color:#F7F5F0;max-width:720px}
.ink-band .band-lead{font-size:15px;line-height:1.85;color:var(--sage);margin-top:14px;max-width:640px}
.ink-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin-top:48px}
.ink-cell{padding:0 28px;border-left:1px solid rgba(247,245,240,.14)}
.ink-cell:first-child{border-left:0;padding-left:0}
.ink-num{display:block;font-size:32px;font-weight:700;line-height:1.1;color:#F7F5F0;letter-spacing:-.02em}
.ink-cell h3{font-size:16px;font-weight:600;margin-top:10px;color:#F7F5F0}
.ink-cell p{font-size:13px;line-height:1.8;color:var(--sage);margin-top:8px}

/* faq */
.faq-wrap{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:96px 0}
.faq-inner{max-width:860px;margin:0 auto}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line-strong)}
.accordion-item:first-of-type{border-top:1px solid var(--line-strong)}
.accordion-button{position:relative;background:transparent;border:0;box-shadow:none;border-radius:0;padding:24px 44px 24px 0;font-size:17px;font-weight:600;color:var(--text);line-height:1.6}
.accordion-button:not(.collapsed){background:transparent;color:var(--brand);box-shadow:none}
.accordion-button:focus{box-shadow:none;border:0}
.accordion-button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.accordion-button::before,.accordion-button::after{content:"";position:absolute;right:8px;background:var(--muted);transition:transform .25s ease,background .25s ease;background-image:none;width:14px;height:1.5px;margin:0;border-radius:0}
.accordion-button::before{top:calc(50% - 1px)}
.accordion-button::after{top:calc(50% - 7px);width:1.5px;height:14px;right:14px}
.accordion-button:not(.collapsed)::before{background:var(--accent)}
.accordion-button:not(.collapsed)::after{background:var(--accent);transform:scaleY(0)}
.accordion-body{padding:0 44px 24px 0;font-size:15px;line-height:1.9;color:var(--muted)}

/* link cards */
.link-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.link-card{display:flex;flex-direction:column;gap:10px;background:#FFFFFF;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease}
.link-card:hover{border-color:var(--line-strong);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.link-card h3{font-size:18px;font-weight:600;line-height:1.5}
.link-card p{font-size:14px;line-height:1.8;color:var(--muted)}
.link-card .more{margin-top:auto;font-size:13px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
.link-card:hover .more{color:var(--accent)}

/* contact */
.contact-card{background:#FFFFFF;border:1px solid var(--line);border-radius:var(--r-img);padding:40px;box-shadow:var(--shadow-1)}
.contact-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:48px}
.contact-info h2{font-size:clamp(1.4rem,2.4vw,1.9rem);line-height:1.35;font-weight:700}
.contact-info .lead{font-size:16px;line-height:1.85;color:var(--muted);margin-top:14px}
.info-list{margin-top:26px}
.info-list li{padding:16px 0;border-top:1px solid var(--line)}
.info-list li:last-child{border-bottom:1px solid var(--line)}
.info-list h3{font-size:15px;font-weight:600;margin-bottom:4px}
.info-list p{font-size:14px;color:var(--muted);line-height:1.8}
.form-field{margin-bottom:18px}
.form-label{display:block;font-size:14px;font-weight:600;color:var(--text);margin-bottom:8px}
.form-control{height:46px;border:1px solid var(--line);border-radius:var(--r-md);background:#FFFFFF;font-size:15px;color:var(--text);padding:0 14px;box-shadow:none;transition:border-color .2s ease,box-shadow .2s ease}
.form-control::placeholder{color:var(--faint)}
.form-control:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(29,59,48,.10);background:#FFFFFF}
textarea.form-control{height:auto;min-height:118px;padding:12px 14px;line-height:1.8;resize:vertical}
.form-tip{font-size:13px;color:var(--faint);line-height:1.75;margin-top:12px}

/* footer */
.site-footer{background:var(--ink);color:#D8DFDA;padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr .95fr 1.1fr;gap:48px}
.footer-brand .brand span{font-size:18px;font-weight:700;letter-spacing:.02em;color:#F7F5F0}
.footer-brand .brand span.brand-sub{color:var(--sage)}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--sage);margin:16px 0 20px;max-width:32em}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px}
.footer-tags span{font-size:12px;color:var(--sage);border:1px solid rgba(247,245,240,.18);border-radius:var(--r-sm);padding:4px 10px}
.footer-col h3{font-size:14px;font-weight:600;color:#F7F5F0;letter-spacing:.04em;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li:last-child{margin-bottom:0}
.footer-col a{font-size:14px;color:var(--sage)}
.footer-col a:hover{color:#F7F5F0}
.footer-col p{font-size:13px;line-height:1.8;color:var(--sage);margin-bottom:14px}
.footer-bottom{border-top:1px solid rgba(247,245,240,.14);margin-top:48px;padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--faint)}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .main-nav{gap:20px}
  .hero-grid{gap:40px}
}
@media (max-width:991px){
  .main-nav{position:fixed;inset:0;z-index:110;display:none;flex-direction:column;justify-content:center;align-items:flex-start;gap:0;background:var(--ink);padding:110px 28px 48px;overflow-y:auto}
  .main-nav.is-open{display:flex}
  .main-nav a{width:100%;font-size:22px;font-weight:600;color:#F7F5F0;padding:18px 0;border-bottom:1px solid rgba(247,245,240,.14)}
  .main-nav a::after{display:none}
  .main-nav a:hover{color:#FFFFFF}
  .main-nav a.active{color:#FFFFFF}
  .main-nav a.active::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-right:12px;vertical-align:middle}
  .nav-toggle{display:inline-flex}
  body.nav-open{overflow:hidden}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .split{grid-template-columns:1fr;gap:36px}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px 24px;padding-bottom:0}
  .flow-item:nth-child(even){transform:none}
  .flow-item:nth-child(even)::before{top:-44px;height:20px}
  .ink-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 0}
  .ink-cell:nth-child(odd){border-left:0;padding-left:0}
  .contact-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .section,.faq-wrap{padding:72px 0}
  .page-hero{padding:40px 0 56px}
  .contact-card{padding:28px}
}
@media (max-width:767px){
  .flow{grid-template-columns:1fr;gap:0;border-top:0;padding-top:0;padding-left:26px;border-left:1px solid var(--line-strong)}
  .flow-item{padding-right:0;padding-bottom:32px;transform:none!important}
  .flow-item:last-child{padding-bottom:0}
  .flow-item::before{content:"";left:-32px;top:6px;width:11px;height:11px;border-radius:50%;background:var(--accent);border:2px solid var(--bg);height:11px;width:11px}
  .flow-item:nth-child(even)::before{top:6px;height:11px}
  .notice-row{grid-template-columns:1fr;gap:8px;padding:20px 0}
  .link-cards{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .section-head{margin-bottom:36px}
  .accordion-button{font-size:16px;padding:20px 40px 20px 0}
  .accordion-body{padding:0 24px 20px 0}
}
@media (max-width:575px){
  .container{padding-inline:20px}
  .header-inner{min-height:68px;gap:12px}
  .brand-main,.brand-sub{font-size:17px}
  .header-actions .btn-outline{display:none}
  .section,.faq-wrap{padding:56px 0}
  .ink-band{padding:56px 0}
  .hero-facts{flex-direction:column;gap:10px}
  .hero-facts li{border-right:0;margin-right:0;padding-right:0}
  .ink-grid{grid-template-columns:1fr;gap:0;margin-top:32px}
  .ink-cell{border-left:0;padding:20px 0;border-top:1px solid rgba(247,245,240,.14)}
  .ink-cell:first-child{border-top:0;padding-top:0}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .contact-card{padding:22px}
  .page-lead{font-size:16px}
}

/* roulang page: category3 */
:root{
  --bg:#F7F5F0;
  --bg-2:#EFEBE2;
  --ink:#14201B;
  --text:#1B2420;
  --muted:#5A6660;
  --faint:#8A928B;
  --line:#DED9CE;
  --line-strong:#C4BDAD;
  --brand:#1D3B30;
  --accent:#D2603A;
  --sage:#7E9A8C;
  --r-tag:4px;
  --r-btn:6px;
  --r-card:8px;
  --r-lg:12px;
  --sh-1:0 1px 2px rgba(20,32,27,.04);
  --sh-2:0 10px 30px rgba(20,32,27,.07);
  --bs-body-bg:#F7F5F0;
  --bs-body-color:#1B2420;
  --bs-border-color:#DED9CE;
  --bs-primary:#1D3B30;
  --bs-primary-rgb:29,59,48;
  --bs-link-color:#1D3B30;
  --bs-link-hover-color:#D2603A;
  --bs-border-radius:6px;
  --bs-body-font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-wrap:break-word;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand);}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.28;letter-spacing:-.01em;color:var(--text);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(247,245,240,.95);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px;}
.brand{
  display:inline-flex;align-items:center;gap:6px;
  font-size:18px;font-weight:700;letter-spacing:.02em;color:var(--brand);
  white-space:nowrap;
}
.brand-main,.brand-sub{color:var(--brand);}
.brand-tag{
  margin-left:4px;font-size:10px;font-weight:500;letter-spacing:.08em;
  padding:2px 6px;border:1px solid var(--line-strong);border-radius:var(--r-tag);
  color:var(--muted);
}
.main-nav{display:flex;align-items:center;gap:28px;}
.main-nav a{
  position:relative;font-size:15px;color:var(--muted);padding:6px 0;white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;
  background:transparent;transition:background .2s ease;
}
.main-nav a:hover{color:var(--text);}
.main-nav a:hover::after{background:var(--line-strong);}
.main-nav a.active{color:var(--text);font-weight:600;}
.main-nav a.active::after{background:var(--accent);}
.header-actions{display:flex;align-items:center;gap:12px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#F7F5F0;}
.btn-primary:hover{background:var(--accent);color:#FFFFFF;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-outline{border-color:var(--line-strong);color:var(--text);background:transparent;}
.btn-outline:hover{border-color:var(--brand);background:var(--bg-2);color:var(--brand);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;padding:0;
  border:1px solid var(--line-strong);border-radius:var(--r-btn);background:transparent;
  align-items:center;justify-content:center;flex-direction:column;gap:7px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--text);transition:transform .25s ease,background .25s ease;}

/* ---------- hero ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--bg-2);border-bottom:1px solid var(--line);padding:72px 0 56px;}
.page-hero::after{
  content:"";position:absolute;right:0;top:0;bottom:0;width:36%;
  background:url(/assets/images/backpic/back-2.png) center/cover no-repeat;
  opacity:.14;pointer-events:none;
}
.page-hero .container{position:relative;z-index:1;}
.breadcrumb-trail{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:28px;}
.breadcrumb-trail a{color:var(--muted);}
.breadcrumb-trail a:hover{color:var(--accent);}
.breadcrumb-trail span[aria-current]{color:var(--text);}
.eyebrow{display:inline-block;font-size:12px;letter-spacing:.14em;color:var(--faint);margin-bottom:14px;}
.page-hero h1{font-size:clamp(1.9rem,4vw,3.05rem);line-height:1.24;max-width:900px;margin-bottom:20px;}
.lede{font-size:18px;line-height:1.85;color:var(--muted);max-width:760px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.chip{
  font-size:13px;letter-spacing:.06em;color:var(--brand);background:#FFFFFF;
  border:1px solid var(--line);border-radius:var(--r-tag);padding:5px 12px;
}

/* ---------- sections ---------- */
.section{padding:96px 0;border-top:1px solid var(--line);}
.section:first-of-type{border-top:none;}
.section-head{max-width:800px;margin-bottom:40px;}
.section-title{font-size:clamp(1.5rem,2.6vw,2rem);margin-bottom:16px;}
.section-note{font-size:16px;line-height:1.85;color:var(--muted);}

/* ---------- compare table ---------- */
.table-scroll{
  overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-card);background:#FFFFFF;
  box-shadow:var(--sh-1);
}
.compare-table{width:100%;min-width:720px;border-collapse:collapse;font-size:15px;}
.compare-table thead th{
  background:var(--bg-2);color:var(--muted);font-size:13px;font-weight:600;letter-spacing:.08em;
  text-align:left;padding:16px 22px;border-bottom:1px solid var(--line);
}
.compare-table tbody th{
  width:22%;text-align:left;font-weight:600;color:var(--brand);
  padding:20px 22px;border-bottom:1px solid var(--line);background:#FFFFFF;vertical-align:top;
}
.compare-table tbody td{
  padding:20px 22px;border-bottom:1px solid var(--line);color:var(--muted);vertical-align:top;
}
.compare-table tbody tr:last-child th,
.compare-table tbody tr:last-child td{border-bottom:none;}
.compare-table tbody tr:hover th,
.compare-table tbody tr:hover td{background:#FBFAF6;}
.mark{display:block;position:relative;padding-left:18px;}
.mark::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;
  background:var(--sage);
}
.mark-strong::before{background:var(--brand);}
.mark-warn::before{background:var(--accent);}

/* ---------- ink band ---------- */
.band-ink{background:var(--ink);color:var(--bg);padding:72px 0;border-top:1px solid var(--ink);}
.band-ink .eyebrow{color:var(--sage);}
.band-ink h2{color:var(--bg);font-size:clamp(1.4rem,2.4vw,1.85rem);max-width:760px;}
.ink-grid{display:grid;grid-template-columns:repeat(3,1fr);margin-top:40px;}
.ink-cell{padding:0 32px;border-left:1px solid rgba(247,245,240,.16);}
.ink-cell:first-child{border-left:none;padding-left:0;}
.ink-num{font-size:32px;font-weight:700;line-height:1.2;color:#F7F5F0;}
.ink-num small{font-size:14px;font-weight:500;color:var(--sage);margin-left:6px;}
.ink-cell p{font-size:14px;line-height:1.8;color:var(--sage);margin-top:10px;}

/* ---------- browser table ---------- */
.browser-table{width:100%;border-collapse:collapse;font-size:15px;}
.browser-table thead th{
  text-align:left;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--muted);
  padding:14px 20px;background:var(--bg-2);border-bottom:1px solid var(--line);
}
.browser-table tbody td{
  padding:18px 20px;border-bottom:1px solid var(--line);color:var(--muted);vertical-align:top;
}
.browser-table tbody th{
  text-align:left;font-weight:600;color:var(--brand);padding:18px 20px;
  border-bottom:1px solid var(--line);white-space:nowrap;
}
.browser-table tbody tr:last-child th,
.browser-table tbody tr:last-child td{border-bottom:none;}

/* ---------- split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.figure{margin:0;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:var(--bg-2);box-shadow:var(--sh-1);}
.figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.figure figcaption{font-size:13px;line-height:1.7;color:var(--faint);padding:12px 18px;background:#FFFFFF;border-top:1px solid var(--line);}
.step-list{display:flex;flex-direction:column;}
.step{display:grid;grid-template-columns:52px 1fr;gap:16px;padding:20px 0;border-top:1px solid var(--line);}
.step:last-child{border-bottom:1px solid var(--line);}
.step-num{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;letter-spacing:.1em;color:var(--accent);padding-top:6px;}
.step h3{font-size:18px;margin-bottom:6px;}
.step p{font-size:15px;line-height:1.8;color:var(--muted);}

/* ---------- faq ---------- */
.faq-block{background:var(--bg-2);padding:96px 0;border-top:1px solid var(--line);}
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line-strong);}
.faq-item:first-of-type{border-top:1px solid var(--line-strong);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:22px 0;font-size:17px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-icon{position:relative;width:14px;height:14px;flex:0 0 auto;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);transition:transform .25s ease;}
.faq-icon::before{left:0;top:6.2px;width:14px;height:1.6px;}
.faq-icon::after{top:0;left:6.2px;width:1.6px;height:14px;}
.faq-item[open] .faq-icon::after{transform:scaleY(0);}
.faq-body{padding:0 40px 24px 0;font-size:15px;line-height:1.85;color:var(--muted);}

/* ---------- cta ---------- */
.cta-band{padding:88px 0;background:var(--bg);border-top:1px solid var(--line);}
.cta-inner{
  display:grid;grid-template-columns:1.45fr .85fr;gap:48px;align-items:center;
  background:#FFFFFF;border:1px solid var(--line);border-radius:var(--r-card);
  padding:44px;box-shadow:var(--sh-1);
}
.cta-inner h2{font-size:clamp(1.35rem,2.2vw,1.6rem);margin-bottom:14px;}
.cta-inner p{font-size:16px;line-height:1.85;color:var(--muted);}
.cta-actions{display:flex;flex-direction:column;gap:12px;}
.cta-actions .btn{width:100%;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:var(--bg);padding:72px 0 32px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;}
.site-footer .brand{color:var(--bg);font-size:18px;}
.site-footer .brand-sub{color:var(--bg);}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--sage);margin:16px 0 20px;max-width:340px;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;}
.footer-tags span{font-size:12px;letter-spacing:.04em;color:var(--sage);padding:4px 10px;border:1px solid rgba(247,245,240,.18);border-radius:var(--r-tag);}
.footer-col h3{font-size:14px;font-weight:600;letter-spacing:.08em;color:var(--bg);margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--sage);}
.footer-col a:hover{color:var(--bg);}
.footer-col p{font-size:14px;line-height:1.8;color:var(--sage);margin-bottom:14px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(247,245,240,.14);
  font-size:13px;color:var(--sage);
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .main-nav{gap:20px;}
  .main-nav a{font-size:14px;}
}
@media (max-width:991px){
  .nav-toggle{display:flex;}
  .main-nav{
    position:fixed;inset:0;z-index:90;
    background:var(--ink);
    flex-direction:column;align-items:stretch;justify-content:flex-start;gap:0;
    padding:120px 24px 40px;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .28s ease,transform .28s ease,visibility .28s;
  }
  body.nav-open .main-nav{opacity:1;visibility:visible;transform:none;}
  .main-nav a{
    color:#F7F5F0;font-size:22px;font-weight:600;padding:20px 0;
    border-bottom:1px solid rgba(247,245,240,.14);
  }
  .main-nav a::after{display:none;}
  .main-nav a:hover{color:#FFFFFF;}
  .main-nav a.active{color:#FFFFFF;}
  .main-nav a.active::before{
    content:"";display:inline-block;width:6px;height:6px;border-radius:50%;
    background:var(--accent);margin-right:12px;vertical-align:middle;
  }
  body.nav-open .site-header{background:var(--ink);border-bottom-color:rgba(247,245,240,.12);}
  body.nav-open .brand-main,body.nav-open .brand-sub{color:#F7F5F0;}
  body.nav-open .brand-tag{color:var(--sage);border-color:rgba(247,245,240,.3);}
  body.nav-open .header-actions .btn-outline{color:#F7F5F0;border-color:rgba(247,245,240,.35);}
  body.nav-open .nav-toggle span{background:#F7F5F0;}
  body.nav-open .nav-toggle span:nth-child(1){transform:translateY(4.25px) rotate(45deg);}
  body.nav-open .nav-toggle span:nth-child(2){transform:translateY(-4.25px) rotate(-45deg);}
  body.nav-open .brand,body.nav-open .header-actions{position:relative;z-index:120;}
  body.nav-open{overflow:hidden;}
  .page-hero::after{display:none;}
  .section{padding:72px 0;}
  .faq-block{padding:72px 0;}
  .cta-band{padding:64px 0;}
  .split{grid-template-columns:1fr;gap:36px;}
  .ink-grid{grid-template-columns:1fr;gap:28px;}
  .ink-cell{padding:0;border-left:none;border-top:1px solid rgba(247,245,240,.16);padding-top:24px;}
  .ink-cell:first-child{border-top:none;padding-top:0;}
  .cta-inner{grid-template-columns:1fr;gap:28px;padding:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:575px){
  .container{padding-left:20px;padding-right:20px;}
  .brand{font-size:16px;}
  .brand-tag{display:none;}
  .page-hero{padding:48px 0 40px;}
  .lede{font-size:16px;}
  .section{padding:56px 0;}
  .faq-block{padding:56px 0;}
  .cta-band{padding:56px 0;}
  .btn{width:100%;}
  .header-actions .btn{width:auto;}
  .step{grid-template-columns:40px 1fr;gap:12px;}
  .faq-item summary{font-size:16px;gap:16px;}
  .faq-body{padding-right:0;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category4 */
:root{
  --bg:#F7F5F0;
  --bg-2:#EFEBE2;
  --ink:#14201B;
  --text:#1B2420;
  --muted:#5A6660;
  --faint:#8A928B;
  --line:#DED9CE;
  --line-strong:#C4BDAD;
  --brand:#1D3B30;
  --accent:#D2603A;
  --sage:#7E9A8C;
  --paper:#FFFFFF;

  --bs-body-bg:#F7F5F0;
  --bs-body-color:#1B2420;
  --bs-border-color:#DED9CE;
  --bs-primary:#1D3B30;
  --bs-primary-rgb:29,59,48;
  --bs-link-color:#1D3B30;
  --bs-link-hover-color:#D2603A;
  --bs-border-radius:6px;
  --bs-body-font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.9;
  text-align:left;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(247,245,240,.95);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:76px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:4px;
  font-size:18px;
  font-weight:700;
  letter-spacing:.02em;
  line-height:1.2;
  color:var(--text);
  white-space:nowrap;
}
.brand .brand-main{color:var(--brand);}
.brand .brand-sub{color:var(--text);}
.brand-tag{
  margin-left:8px;
  font-size:10px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--faint);
  border:1px solid var(--line-strong);
  border-radius:4px;
  padding:2px 6px;
  line-height:1.5;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:30px;
}
.main-nav a{
  position:relative;
  font-size:15px;
  color:var(--muted);
  padding:6px 0;
  white-space:nowrap;
}
.main-nav a:hover{color:var(--text);}
.main-nav a.active{color:var(--text);font-weight:600;}
.main-nav a.active::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-2px;
  height:2px;
  background:var(--accent);
  border-radius:1px;
}
.header-actions{display:flex;align-items:center;gap:12px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 26px;
  border-radius:6px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-solid{background:var(--brand);color:var(--bg);}
.btn-solid:hover{background:var(--accent);color:#fff;transform:translateY(-1px);box-shadow:0 10px 30px rgba(20,32,27,.07);}
.btn-solid:active{transform:translateY(0);box-shadow:none;}
.btn-outline{border-color:var(--line-strong);color:var(--text);background:transparent;}
.btn-outline:hover{border-color:var(--brand);background:var(--bg-2);color:var(--brand);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--brand);
}
.link-arrow span.arw{transition:transform .2s ease;display:inline-block;}
.link-arrow:hover{color:var(--accent);}
.link-arrow:hover span.arw{transform:translateX(3px);}

/* ---------- nav toggle ---------- */
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--line-strong);
  border-radius:6px;
  background:transparent;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  cursor:pointer;
  position:relative;
  z-index:90;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);transition:transform .2s ease,background-color .2s ease;}
body.nav-open .nav-toggle span:first-child{transform:translateY(3.5px) rotate(45deg);}
body.nav-open .nav-toggle span:last-child{transform:translateY(-3.5px) rotate(-45deg);}

/* ---------- page hero ---------- */
.page-hero{
  background:var(--bg-2);
  border-bottom:1px solid var(--line);
  padding:64px 0 56px;
}
.crumbs{font-size:13px;color:var(--muted);margin-bottom:22px;}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--accent);}
.crumbs .sep{margin:0 8px;color:var(--line-strong);}
.page-hero h1{
  font-size:clamp(1.75rem,3.4vw,2.6rem);
  line-height:1.28;
  font-weight:700;
  letter-spacing:-.01em;
  max-width:860px;
  color:var(--text);
}
.page-hero .lede{
  margin-top:18px;
  font-size:18px;
  line-height:1.85;
  color:var(--muted);
  max-width:780px;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:0;
  margin-top:28px;
  border-top:1px solid var(--line);
  padding-top:18px;
}
.hero-meta div{
  padding-right:28px;
  margin-right:28px;
  border-right:1px solid var(--line-strong);
  font-size:13px;
  color:var(--muted);
}
.hero-meta div:last-child{border-right:0;margin-right:0;padding-right:0;}
.hero-meta strong{display:block;font-size:20px;font-weight:700;color:var(--brand);line-height:1.5;}

/* ---------- sections ---------- */
.section{padding:96px 0;}
.section + .section{border-top:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:40px;}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--faint);
  margin-bottom:14px;
}
.section-head h2{
  font-size:clamp(1.4rem,2.4vw,1.9rem);
  font-weight:700;
  line-height:1.35;
  letter-spacing:-.005em;
  margin-bottom:16px;
}
.section-head p{font-size:16px;color:var(--muted);line-height:1.85;}

/* ---------- note list ---------- */
.note-list{border-top:1px solid var(--line);}
.note-item{
  display:grid;
  grid-template-columns:56px minmax(0,1fr);
  gap:20px;
  padding:30px 0;
  border-bottom:1px solid var(--line);
}
.note-item .num{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--accent);
  padding-top:6px;
}
.note-item h3{
  font-size:20px;
  font-weight:600;
  line-height:1.5;
  color:var(--brand);
  margin-bottom:10px;
}
.note-item p{font-size:16px;line-height:1.9;color:var(--muted);}

.figure{
  margin-top:36px;
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
  background:var(--paper);
}
.figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.figure figcaption{
  font-size:13px;
  color:var(--faint);
  padding:12px 16px;
  border-top:1px solid var(--line);
  line-height:1.7;
}

/* ---------- side card ---------- */
.side-card{
  position:sticky;
  top:104px;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:8px;
  padding:26px 24px;
  box-shadow:0 1px 2px rgba(20,32,27,.04);
}
.side-card .side-label{
  font-size:12px;
  letter-spacing:.14em;
  color:var(--faint);
  margin-bottom:12px;
}
.side-card h3{
  font-size:18px;
  font-weight:600;
  line-height:1.5;
  color:var(--brand);
  margin-bottom:16px;
}
.side-card ul{margin-bottom:22px;}
.side-card li{
  display:flex;
  gap:10px;
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
  padding:10px 0;
  border-bottom:1px solid var(--line);
}
.side-card li:last-child{border-bottom:0;}
.side-card li .dot{
  flex:0 0 auto;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--accent);
  margin-top:11px;
}
.side-card .btn{width:100%;}
.side-card .side-note{
  margin-top:14px;
  font-size:13px;
  line-height:1.7;
  color:var(--faint);
}

/* ---------- table ---------- */
.table-scroll{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:8px;
  background:var(--paper);
}
.check-table{
  width:100%;
  min-width:620px;
  border-collapse:collapse;
  font-size:15px;
}
.check-table caption{
  caption-side:top;
  text-align:left;
  padding:16px 20px;
  font-size:13px;
  color:var(--faint);
  border-bottom:1px solid var(--line);
  line-height:1.7;
}
.check-table th{
  text-align:left;
  font-weight:600;
  font-size:14px;
  color:var(--text);
  background:var(--bg-2);
  padding:14px 20px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.check-table td{
  padding:16px 20px;
  border-bottom:1px solid var(--line);
  color:var(--muted);
  vertical-align:top;
  line-height:1.85;
}
.check-table tr:last-child td{border-bottom:0;}
.check-table td strong{color:var(--text);font-weight:600;}
.check-table .dot{
  display:inline-block;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--accent);
  margin-right:8px;
  vertical-align:middle;
}

/* ---------- steps ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:32px;
  margin-top:8px;
}
.step{
  position:relative;
  padding-top:34px;
}
.step::before{
  content:"";
  position:absolute;
  top:6px;left:0;right:0;
  height:1px;
  background:var(--line-strong);
}
.step .node{
  position:absolute;
  top:0;left:0;
  width:13px;height:13px;
  border-radius:50%;
  background:var(--bg);
  border:2px solid var(--accent);
}
.step .step-num{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--faint);
  display:block;
  margin-bottom:8px;
}
.step h3{
  font-size:18px;
  font-weight:600;
  color:var(--brand);
  margin-bottom:10px;
  line-height:1.5;
}
.step p{font-size:15px;line-height:1.85;color:var(--muted);}

/* ---------- faq ---------- */
.faq-section{background:var(--bg-2);}
.faq-wrap{max-width:860px;}
.faq-accordion .accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line-strong);
  border-radius:0;
}
.faq-accordion .accordion-item:first-of-type{border-top:1px solid var(--line-strong);}
.faq-accordion .accordion-header{margin:0;}
.faq-accordion .accordion-button{
  background:transparent;
  box-shadow:none;
  border-radius:0;
  padding:22px 34px 22px 0;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  line-height:1.6;
  display:flex;
  align-items:flex-start;
}
.faq-accordion .accordion-button:not(.collapsed){
  background:transparent;
  color:var(--brand);
  box-shadow:none;
}
.faq-accordion .accordion-button:focus{
  box-shadow:none;
  outline:2px solid var(--accent);
  outline-offset:-2px;
}
.faq-accordion .accordion-button::after{
  background-image:none;
  content:"+";
  width:auto;
  height:auto;
  font-size:22px;
  font-weight:400;
  line-height:1;
  color:var(--accent);
  transform:none;
  margin-left:auto;
  transition:transform .2s ease;
  flex:0 0 auto;
}
.faq-accordion .accordion-button:not(.collapsed)::after{
  content:"−";
  transform:none;
}
.faq-accordion .accordion-body{
  padding:0 34px 24px 0;
  font-size:15px;
  line-height:1.9;
  color:var(--muted);
}

/* ---------- cta ---------- */
.cta-band{
  background:var(--ink);
  color:var(--bg);
  padding:76px 0;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:48px;
}
.cta-band h2{
  font-size:clamp(1.4rem,2.4vw,1.9rem);
  font-weight:700;
  line-height:1.4;
  color:var(--bg);
  margin-bottom:14px;
}
.cta-band p{
  font-size:16px;
  line-height:1.85;
  color:#B9C4BE;
  max-width:620px;
}
.cta-band .btn-solid{background:var(--accent);color:#fff;flex:0 0 auto;}
.cta-band .btn-solid:hover{background:#E0703F;color:#fff;transform:translateY(-1px);box-shadow:none;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink);
  color:#B9C4BE;
  padding:72px 0 28px;
  border-top:1px solid rgba(247,245,240,.08);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.1fr;
  gap:48px;
}
.footer-brand .brand{
  font-size:18px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--bg);
}
.footer-brand .brand .brand-main{color:var(--bg);}
.footer-brand .brand .brand-sub{color:var(--sage);}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  line-height:1.85;
  color:#93A29A;
  max-width:360px;
}
.footer-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:20px;
}
.footer-tags span{
  font-size:12px;
  letter-spacing:.06em;
  color:var(--sage);
  border:1px solid rgba(126,154,140,.38);
  border-radius:4px;
  padding:3px 9px;
  line-height:1.6;
}
.footer-col h3{
  font-size:14px;
  font-weight:600;
  color:var(--bg);
  margin-bottom:18px;
  letter-spacing:.04em;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col li a,
.footer-col p{
  font-size:14px;
  line-height:1.75;
  color:var(--sage);
}
.footer-col li a:hover{color:var(--bg);}
.footer-col p{margin-bottom:14px;color:#93A29A;}
.footer-bottom{
  margin-top:56px;
  padding-top:22px;
  border-top:1px solid rgba(247,245,240,.12);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  font-size:13px;
  line-height:1.75;
  color:#7E8C85;
}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .main-nav{gap:22px;}
}

@media (max-width:991.98px){
  .main-nav{
    position:fixed;
    inset:0;
    z-index:60;
    background:var(--ink);
    padding:104px 28px 40px;
    display:flex;
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    opacity:0;
    visibility:hidden;
    transform:translateY(-8px);
    transition:opacity .24s ease,transform .24s ease,visibility .24s ease;
    overflow-y:auto;
  }
  body.nav-open .main-nav{opacity:1;visibility:visible;transform:none;}
  .main-nav a{
    width:100%;
    font-size:22px;
    font-weight:600;
    color:var(--bg);
    padding:18px 0;
    border-bottom:1px solid rgba(247,245,240,.14);
  }
  .main-nav a:hover{color:#fff;}
  .main-nav a.active{color:#fff;}
  .main-nav a.active::after{display:none;}
  .main-nav a.active::before{
    content:"";
    display:inline-block;
    width:6px;height:6px;
    border-radius:50%;
    background:var(--accent);
    margin-right:10px;
    vertical-align:middle;
  }
  .nav-toggle{display:inline-flex;}
  body.nav-open{overflow:hidden;}

  .section{padding:72px 0;}
  .page-hero{padding:48px 0 44px;}
  .side-card{
    position:static;
    background:var(--bg-2);
    border:1px solid var(--line);
    box-shadow:none;
    padding:20px 20px 18px;
    margin-bottom:36px;
  }
  .side-card h3{margin-bottom:12px;font-size:17px;}
  .side-card ul{margin-bottom:16px;display:grid;grid-template-columns:1fr 1fr;gap:0 16px;}
  .side-card li{padding:8px 0;border-bottom:0;font-size:14px;}
  .side-card .btn{width:auto;height:40px;padding:0 20px;font-size:14px;}
  .side-card .side-note{margin-top:10px;}

  .steps{grid-template-columns:1fr;gap:0;}
  .step{padding:0 0 28px 28px;border-left:1px solid var(--line-strong);}
  .step::before{display:none;}
  .step .node{top:6px;left:-7px;}
  .step:last-child{padding-bottom:0;border-left-color:transparent;}

  .cta-inner{flex-direction:column;align-items:flex-start;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
}

@media (max-width:767.98px){
  .header-actions .btn{display:none;}
  .hero-meta div{padding-right:18px;margin-right:18px;font-size:12px;}
  .hero-meta strong{font-size:17px;}
  .note-item{grid-template-columns:40px minmax(0,1fr);gap:14px;padding:26px 0;}
  .note-item h3{font-size:18px;}
  .footer-grid{grid-template-columns:1fr;gap:36px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
}

@media (max-width:575.98px){
  .container{padding-left:20px;padding-right:20px;}
  .section{padding:56px 0;}
  .page-hero{padding:36px 0 36px;}
  .page-hero .lede{font-size:16px;}
  .side-card ul{grid-template-columns:1fr;}
  .btn{width:100%;}
  .side-card .btn{width:100%;}
  .cta-band .btn-solid{width:100%;}
  .hero-meta{flex-direction:column;gap:14px;}
  .hero-meta div{border-right:0;padding-right:0;margin-right:0;padding-bottom:12px;border-bottom:1px solid var(--line);}
  .hero-meta div:last-child{padding-bottom:0;border-bottom:0;}
}