/* roulang page: index */
:root{
  --ink:#0E100D;--ink-2:#2A2E28;--ink-3:#6B6F66;
  --paper:#FBFAF6;--paper-2:#F2F0E9;--line:#E2DFD5;
  --primary:#C6F24E;--primary-deep:#4E7A1F;--accent:#FF6A3D;
  --r-sm:8px;--r-md:12px;--r-lg:20px;
  --sh-1:0 1px 2px rgba(14,16,13,.04);
  --sh-2:0 12px 32px -12px rgba(14,16,13,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--font-cn);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease);}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary-deep);outline-offset:2px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;font-family:Inter,ui-sans-serif,system-ui,sans-serif;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px;}
@media(min-width:768px){.container{padding:0 32px;}}
.section{padding:56px 0;border-top:1px solid var(--line);}
@media(min-width:768px){.section{padding:80px 0;}}
@media(min-width:1024px){.section{padding:96px 0;}}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--ink-3);text-transform:uppercase;}
.h2{font-size:clamp(24px,3vw,38px);line-height:1.2;font-weight:700;letter-spacing:-.01em;}
.h3{font-size:19px;line-height:1.4;font-weight:600;}
.lead{color:var(--ink-2);}
.muted{color:var(--ink-3);}
.small{font-size:13px;line-height:1.6;}

/* ============ HEADER / NAV ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:transparent;border-bottom:1px solid transparent;
  transition:background .26s var(--ease),border-color .26s var(--ease),backdrop-filter .26s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(251,250,246,.88);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom-color:var(--line);
}
.nav{height:56px;display:flex;align-items:center;justify-content:space-between;gap:20px;}
@media(min-width:1024px){.nav{height:64px;}}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.01em;font-size:17px;height:32px;}
.brand-mark{width:22px;height:22px;border-radius:6px;background:var(--ink);position:relative;flex:0 0 auto;}
.brand-mark::after{content:"";position:absolute;inset:6px;border-radius:2px;background:var(--primary);}
.brand-sub{font-size:11px;font-weight:700;color:var(--ink-3);letter-spacing:.08em;border-left:1px solid var(--line);padding-left:8px;}
.nav-links{display:none;align-items:center;gap:26px;}
@media(min-width:1024px){.nav-links{display:flex;}}
.nav-links a{font-size:14.5px;color:var(--ink-2);position:relative;padding:6px 0;}
.nav-links a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--primary);transition:right .26s var(--ease);}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after,.nav-links a.active::after{right:0;}
.nav-links a.active{color:var(--ink);font-weight:600;}
.nav-right{display:flex;align-items:center;gap:10px;}
.icon-btn{width:36px;height:36px;border-radius:999px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--ink-2);transition:border-color .22s var(--ease),color .22s var(--ease);}
.icon-btn:hover{border-color:var(--ink);color:var(--ink);}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:40px;padding:0 20px;border-radius:999px;font-size:14.5px;font-weight:600;border:1px solid transparent;transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);}
.btn-primary{background:var(--ink);color:var(--paper);}
.btn-primary:hover{background:var(--primary);color:var(--ink);}
.btn-ghost{border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--paper-2);}
.btn .arrow{transition:transform .22s var(--ease);}
.btn:hover .arrow{transform:translateX(4px);}
.nav-cta{display:none;}
@media(min-width:1024px){.nav-cta{display:inline-flex;}}
.hamburger{display:flex;}
@media(min-width:1024px){.hamburger{display:none;}}

/* drawer */
.drawer{position:fixed;inset:0;z-index:90;background:var(--paper);transform:translateY(-100%);transition:transform .3s var(--ease);display:flex;flex-direction:column;}
.drawer.open{transform:translateY(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:56px;padding:0 20px;border-bottom:1px solid var(--line);}
.drawer-body{padding:24px 20px;flex:1;overflow-y:auto;}
.drawer-body a{display:block;font-size:20px;font-weight:600;padding:14px 0;border-bottom:1px solid var(--line);}
.drawer-foot{padding:20px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:12px;}

/* ============ HERO ============ */
.hero{position:relative;padding:26px 0 40px;}
@media(min-width:768px){.hero{padding:40px 0 64px;}}
.hero-grid{display:grid;gap:32px;}
@media(min-width:1024px){.hero-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center;}}
.hero-copy{position:relative;}
.watermark{position:absolute;top:-10px;left:-6px;width:40%;max-width:360px;font-size:clamp(40px,7vw,72px);font-weight:900;line-height:.92;color:var(--ink);opacity:.05;pointer-events:none;user-select:none;letter-spacing:-.03em;z-index:0;}
.hero-copy > *{position:relative;z-index:1;}
.h1{font-size:clamp(34px,5vw,64px);line-height:1.08;font-weight:800;letter-spacing:-.02em;}
.hero-sub{margin-top:16px;font-size:17px;color:var(--ink-2);max-width:34ch;}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:16px;}
.badge-outline{margin-top:28px;display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:999px;padding:7px 14px;font-size:13px;color:var(--ink-2);background:var(--paper);}
.badge-outline .dot{width:7px;height:7px;border-radius:999px;background:var(--primary);flex:0 0 auto;}
.hero-visual{border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:var(--paper-2);aspect-ratio:4/5;}
@media(max-width:767px){.hero-visual{aspect-ratio:16/10;max-height:240px;}}
.hero-visual img{width:100%;height:100%;object-fit:cover;}

/* ============ PAIN ============ */
.pain-grid{display:grid;gap:18px;margin-top:32px;}
@media(min-width:768px){.pain-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.pain-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}}
.pain-card{border:1px solid var(--line);border-left:3px solid var(--line);border-radius:var(--r-md);padding:22px 22px 22px 20px;background:var(--paper);transition:border-left-color .24s var(--ease),background .24s var(--ease);}
.pain-card:hover{border-left-color:var(--primary);background:var(--paper-2);}
.pain-num{font-size:13px;font-weight:800;color:var(--primary-deep);letter-spacing:.08em;}
.pain-card p{margin-top:10px;font-size:17px;font-weight:600;line-height:1.55;}

/* ============ SOLUTIONS ============ */
.sol-grid{display:grid;gap:24px;margin-top:34px;}
@media(min-width:1024px){.sol-grid{grid-template-columns:repeat(12,minmax(0,1fr));gap:32px;}}
.sol-card{border:1px solid var(--line);border-radius:var(--r-md);background:var(--paper);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .26s var(--ease),transform .26s var(--ease);}
.sol-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);}
.sol-wide{display:flex;flex-direction:column;}
@media(min-width:1024px){
  .sol-wide{grid-column:span 7;flex-direction:row;align-items:stretch;}
  .sol-narrow{grid-column:span 5;}
  .sol-wide.rev{flex-direction:row-reverse;}
}
.sol-body{padding:24px;flex:1;}
.sol-body h3{margin-top:10px;}
.sol-body p{margin-top:10px;color:var(--ink-2);font-size:15.5px;}
.sol-media{position:relative;overflow:hidden;background:var(--paper-2);aspect-ratio:4/3;}
@media(min-width:1024px){
  .sol-wide .sol-media{flex:0 0 46%;aspect-ratio:auto;min-height:100%;}
  .sol-narrow .sol-media{aspect-ratio:16/10;}
}
.sol-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease);}
.sol-card:hover .sol-media img{transform:scale(1.03);}
.sol-link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-weight:600;font-size:14.5px;color:var(--primary-deep);position:relative;}
.sol-link::after{content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:var(--primary-deep);transition:width .24s var(--ease);}
.sol-link:hover::after{width:100%;}
.sol-link .arrow{transition:transform .24s var(--ease);}
.sol-link:hover .arrow{transform:translateX(4px);}
.chip{display:inline-block;border:1px solid var(--line);border-radius:999px;padding:3px 10px;font-size:12px;color:var(--ink-3);}

/* ============ STATS ============ */
.stats{background:var(--ink);color:var(--paper);position:relative;overflow:hidden;}
.stats::before{content:"";position:absolute;inset:0;background-image:linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:calc(100% / 6) 100%;pointer-events:none;}
.stats .container{position:relative;z-index:1;}
.stats-grid{display:grid;gap:30px;margin-top:34px;}
@media(min-width:640px){.stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.stats-grid{grid-template-columns:repeat(4,minmax(0,1fr));}}
.stat-num{font-size:clamp(40px,6vw,64px);font-weight:900;line-height:1;color:var(--primary);}
.stat-label{margin-top:12px;font-size:15px;font-weight:600;color:var(--paper);}
.stat-note{margin-top:8px;font-size:13px;line-height:1.65;color:rgba(251,250,246,.6);}

/* ============ NEWS ============ */
.news-grid{display:grid;gap:32px;margin-top:34px;}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(12,minmax(0,1fr));gap:40px;}}
.news-list{grid-column:span 12;}
@media(min-width:1024px){.news-list{grid-column:span 8;}}
.news-item{border-bottom:1px solid var(--line);transition:background .22s var(--ease);}
.news-item:first-child{border-top:1px solid var(--line);}
.news-item:hover{background:var(--paper-2);}
.news-item a{display:block;padding:20px 14px;}
.news-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.news-title{margin-top:10px;font-size:18px;font-weight:600;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-item:hover .news-title{color:var(--primary-deep);}
.news-sum{margin-top:8px;font-size:14.5px;color:var(--ink-3);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-more{margin-top:10px;font-size:13.5px;font-weight:600;color:var(--primary-deep);display:inline-flex;align-items:center;gap:6px;}
.news-side{grid-column:span 12;}
@media(min-width:1024px){.news-side{grid-column:span 4;}}
.side-box{border:1px solid var(--line);border-radius:var(--r-md);padding:22px;background:var(--paper);}
.side-box + .side-box{margin-top:20px;}
.side-title{font-size:13px;font-weight:800;letter-spacing:.08em;color:var(--ink-3);}
.cat-links{margin-top:14px;}
.cat-links a{display:flex;align-items:center;justify-content:space-between;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14.5px;color:var(--ink-2);}
.cat-links a:last-child{border-bottom:0;}
.cat-links a:hover{color:var(--primary-deep);}
.hot-list{margin-top:14px;counter-reset:hot;}
.hot-list li{padding:10px 0;border-bottom:1px dashed var(--line);font-size:14.5px;color:var(--ink-2);display:flex;gap:10px;}
.hot-list li:last-child{border-bottom:0;}
.hot-list li span{color:var(--primary-deep);font-weight:700;}
.empty-state{min-height:160px;border:1px dashed var(--line);border-radius:var(--r-md);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:26px;text-align:center;background:var(--paper);}
.empty-state .ico{width:44px;height:44px;border-radius:999px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--ink-3);}
.empty-state button{font-weight:600;color:var(--primary-deep);text-decoration:underline;}

/* ============ FAQ ============ */
.faq{margin-top:30px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;text-align:left;padding:20px 4px;font-size:17.5px;font-weight:600;transition:color .22s var(--ease);}
.faq-q:hover{color:var(--primary-deep);}
.faq-q .plus{flex:0 0 auto;width:20px;height:20px;position:relative;}
.faq-q .plus::before,.faq-q .plus::after{content:"";position:absolute;background:var(--ink-3);transition:transform .32s var(--ease),background .22s var(--ease);}
.faq-q .plus::before{left:0;right:0;top:9px;height:2px;}
.faq-q .plus::after{top:0;bottom:0;left:9px;width:2px;}
.faq-item.open .faq-q .plus::after{transform:rotate(90deg);opacity:0;}
.faq-item.open .faq-q{color:var(--primary-deep);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease);}
.faq-a p{max-width:680px;padding:0 4px 22px;color:var(--ink-2);font-size:16px;}

/* ============ CTA / PRIVACY ============ */
.cta-bar{background:var(--ink);color:var(--paper);border-radius:var(--r-lg);padding:34px 28px;display:flex;flex-direction:column;gap:22px;align-items:flex-start;}
@media(min-width:768px){.cta-bar{flex-direction:row;align-items:center;justify-content:space-between;padding:40px;gap:32px;}}
.cta-bar .h2{color:var(--paper);}
.cta-bar p{margin-top:10px;color:rgba(251,250,246,.7);font-size:15px;}
.privacy{margin-top:26px;background:var(--paper-2);border-radius:var(--r-md);padding:20px 24px;}
.privacy ul{display:grid;gap:8px;margin-top:10px;}
@media(min-width:768px){.privacy ul{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}}
.privacy li{font-size:13px;color:var(--ink-2);line-height:1.65;}

/* ============ FOOTER ============ */
.site-footer{border-top:1px solid var(--line);margin-top:56px;background:var(--paper);}
.footer-grid{display:grid;gap:32px;padding:46px 0;}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}}
.footer-title{font-size:13px;font-weight:800;letter-spacing:.08em;color:var(--ink-3);margin-bottom:14px;}
.footer-links li + li{margin-top:10px;}
.footer-links a{font-size:14.5px;color:var(--ink-2);}
.footer-links a:hover{color:var(--primary-deep);text-decoration:underline;}
.footer-bottom{border-top:1px solid var(--line);padding:20px 0 30px;display:flex;flex-direction:column;gap:10px;font-size:13px;color:var(--ink-3);}
@media(min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;}}

/* ============ FLOATING / MODAL ============ */
.float-btn{position:fixed;right:20px;bottom:20px;z-index:70;display:inline-flex;align-items:center;gap:8px;height:48px;padding:0 22px;border-radius:999px;background:var(--ink);color:var(--paper);font-size:14.5px;font-weight:600;box-shadow:var(--sh-2);transition:background .22s var(--ease),color .22s var(--ease);}
.float-btn:hover{background:var(--primary);color:var(--ink);}
@media(min-width:1024px){.float-btn{right:32px;bottom:32px;}}
@media(max-width:767px){
  .float-btn{left:0;right:0;bottom:0;height:56px;border-radius:0;justify-content:center;}
  body{padding-bottom:56px;}
}
.modal{position:fixed;inset:0;z-index:100;display:none;}
.modal.open{display:block;}
.modal-mask{position:absolute;inset:0;background:rgba(14,16,13,.62);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);}
.modal-panel{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:calc(100% - 32px);max-width:480px;background:#fff;border-radius:var(--r-lg);padding:30px 28px;box-shadow:var(--sh-2);max-height:90vh;overflow-y:auto;}
@media(max-width:767px){
  .modal-panel{left:0;right:0;top:auto;bottom:0;transform:none;width:100%;max-width:none;border-radius:20px 20px 0 0;padding:26px 20px 30px;}
}
.modal-close{position:absolute;right:18px;top:18px;width:32px;height:32px;border-radius:999px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:18px;line-height:1;color:var(--ink-3);}
.modal-close:hover{border-color:var(--ink);color:var(--ink);}
.modal-panel h3{font-size:20px;font-weight:700;}
.modal-panel .modal-sub{margin-top:8px;font-size:14px;color:var(--ink-3);}
.field{margin-top:16px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:7px;}
.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:10px;background:var(--paper);padding:0 14px;height:48px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);}
.field textarea{height:auto;padding:12px 14px;resize:vertical;min-height:84px;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary-deep);box-shadow:0 0 0 4px rgba(78,122,31,.14);}
.consent{margin-top:16px;display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-3);line-height:1.6;}
.consent input{width:16px;height:16px;margin-top:3px;flex:0 0 auto;}
.submit-btn{width:100%;height:52px;margin-top:18px;border-radius:999px;background:var(--ink);color:var(--paper);font-weight:600;transition:background .22s var(--ease),color .22s var(--ease);}
.submit-btn:hover{background:var(--primary);color:var(--ink);}

/* ============ REVEAL ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.in{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
  .sol-card:hover{transform:none;}
}

/* roulang page: category1 */
:root{
  --ink:#0E100D; --ink-2:#2A2E28; --ink-3:#6B6F66;
  --paper:#FBFAF6; --paper-2:#F2F0E9; --line:#E2DFD5;
  --primary:#C6F24E; --primary-deep:#4E7A1F; --accent:#FF6A3D;
  --r-sm:8px; --r-md:12px; --r-lg:20px;
  --sh-1:0 1px 2px rgba(14,16,13,.04);
  --sh-2:0 12px 32px -12px rgba(14,16,13,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:56px;
}
@media (min-width:1024px){ :root{ --header-h:64px; } }

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; scroll-padding-top:calc(var(--header-h) + 60px); }
body{
  margin:0; background:var(--paper); color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px; line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }
input,select,textarea{ font:inherit; color:inherit; }
ul,ol{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4,p,figure{ margin:0; }
h1{ font-size:clamp(32px,4.6vw,56px); line-height:1.1; font-weight:800; letter-spacing:-.02em; }
h2{ font-size:clamp(23px,2.6vw,34px); line-height:1.22; font-weight:700; letter-spacing:-.01em; }
h3{ font-size:19px; line-height:1.4; font-weight:600; }
.nums,.stat-num{ font-variant-numeric:tabular-nums; font-family:Inter,ui-sans-serif,system-ui,sans-serif; }

:focus-visible{ outline:2px solid var(--primary-deep); outline-offset:2px; border-radius:4px; }

.container{ width:100%; max-width:1240px; margin:0 auto; padding:0 20px; }
@media (min-width:768px){ .container{ padding:0 32px; } }

.muted{ color:var(--ink-3); }
.small{ font-size:13px; line-height:1.65; }
.eyebrow{
  font-size:12px; font-weight:800; letter-spacing:.1em; text-transform:uppercase;
  color:var(--primary-deep); margin-bottom:14px;
}

/* ---------- header ---------- */
.site-header{
  position:sticky; top:0; z-index:60;
  height:var(--header-h);
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .28s var(--ease),border-color .28s var(--ease),backdrop-filter .28s var(--ease);
}
.site-header.is-stuck{
  background:rgba(251,250,246,.88);
  backdrop-filter:blur(12px);
  border-bottom-color:var(--line);
}
.site-header .container{ height:100%; }
.nav{ height:100%; display:flex; align-items:center; justify-content:space-between; gap:20px; }
.brand{
  display:inline-flex; align-items:center; gap:9px;
  font-weight:800; font-size:17px; letter-spacing:-.01em; color:var(--ink);
  white-space:nowrap;
}
.brand-mark{
  width:12px; height:12px; background:var(--primary);
  border:1px solid var(--ink); border-radius:3px; display:inline-block;
}
.brand-sub{
  font-size:12px; font-weight:700; color:var(--ink-3);
  border:1px solid var(--line); border-radius:999px; padding:2px 8px;
}
.nav-links{ display:none; align-items:center; gap:26px; }
@media (min-width:1024px){ .nav-links{ display:flex; } }
.nav-links a{
  position:relative; font-size:15px; color:var(--ink-2); padding:6px 0;
  transition:color .2s var(--ease);
}
.nav-links a::after{
  content:""; position:absolute; left:0; right:0; bottom:0; height:2px;
  background:var(--primary); transform:scaleX(0); transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-links a:hover{ color:var(--ink); }
.nav-links a:hover::after,.nav-links a.active::after{ transform:scaleX(1); }
.nav-links a.active{ color:var(--ink); font-weight:600; }
.nav-right{ display:flex; align-items:center; gap:10px; }
.icon-btn{
  width:36px; height:36px; border-radius:999px; border:1px solid var(--line);
  display:inline-flex; align-items:center; justify-content:center; color:var(--ink-2);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{ border-color:var(--ink); color:var(--ink); background:var(--paper-2); }
.hamburger{ display:inline-flex; }
@media (min-width:1024px){ .hamburger{ display:none; } }

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:46px; padding:0 24px; border-radius:999px;
  font-size:15px; font-weight:600; white-space:nowrap;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn-primary{ background:var(--ink); color:var(--paper); border:1px solid var(--ink); }
.btn-primary:hover{ background:var(--primary); color:var(--ink); border-color:var(--primary); }
.btn-ghost{ background:transparent; color:var(--ink); border:1px solid var(--ink); }
.btn-ghost:hover{ background:var(--paper-2); }
.btn-ghost .arrow{ transition:transform .22s var(--ease); }
.btn-ghost:hover .arrow{ transform:translateX(4px); }
.nav-cta{ height:40px; padding:0 18px; font-size:14px; display:none; }
@media (min-width:1024px){ .nav-cta{ display:inline-flex; } }
.text-link{
  display:inline-flex; align-items:center; gap:6px;
  font-size:15px; font-weight:600; color:var(--primary-deep);
  border-bottom:1px solid transparent; padding-bottom:2px;
  transition:border-color .22s var(--ease),color .22s var(--ease);
}
.text-link span{ transition:transform .22s var(--ease); }
.text-link:hover{ border-bottom-color:var(--primary-deep); }
.text-link:hover span{ transform:translateX(4px); }

/* ---------- breadcrumb ---------- */
.crumb-bar{ padding:16px 0 0; }
.crumb{ font-size:13px; color:var(--ink-3); display:flex; flex-wrap:wrap; gap:8px; align-items:center; }
.crumb a{ color:var(--primary-deep); }
.crumb a:hover{ text-decoration:underline; }
.crumb .sep{ color:var(--line); }
.crumb .current{ color:var(--ink); }

/* ---------- hero ---------- */
.page-hero{ padding:30px 0 34px; border-bottom:1px solid var(--line); }
.hero-grid{ display:grid; gap:28px; grid-template-columns:1fr; align-items:end; }
@media (min-width:900px){ .hero-grid{ grid-template-columns:1.35fr .85fr; gap:44px; } }
.lede{ font-size:17px; color:var(--ink-2); margin-top:16px; max-width:34ch; }
.hero-actions{ display:flex; flex-wrap:wrap; gap:16px; margin-top:26px; }
.hero-figure{
  border:1px solid var(--line); border-radius:var(--r-lg); overflow:hidden;
  background:var(--paper-2);
}
.hero-figure img{ width:100%; aspect-ratio:16/10; object-fit:cover; }
.hero-figure figcaption{ font-size:13px; color:var(--ink-3); padding:12px 16px; border-top:1px solid var(--line); }

/* ---------- anchor bar ---------- */
.anchor-bar{
  position:sticky; top:var(--header-h); z-index:40;
  background:rgba(251,250,246,.94); backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.anchor-scroll{
  display:flex; gap:8px; overflow-x:auto; padding:10px 0;
  scrollbar-width:none;
}
.anchor-scroll::-webkit-scrollbar{ display:none; }
.anchor-scroll a{
  flex:0 0 auto; font-size:13px; font-weight:600; color:var(--ink-2);
  border:1px solid var(--line); border-radius:999px; padding:6px 14px;
  transition:border-color .2s var(--ease),background .2s var(--ease),color .2s var(--ease);
}
.anchor-scroll a:hover{ border-color:var(--ink); background:var(--paper-2); color:var(--ink); }

/* ---------- layout ---------- */
.layout{ display:grid; gap:44px; grid-template-columns:1fr; padding:52px 0 0; }
@media (min-width:1024px){ .layout{ grid-template-columns:minmax(0,1fr) 250px; gap:64px; } }
.sticky-toc{ display:none; }
@media (min-width:1024px){
  .sticky-toc{ display:block; position:sticky; top:calc(var(--header-h) + 76px); align-self:start; }
}
.toc-card{ border:1px solid var(--line); border-radius:var(--r-md); padding:20px; background:var(--paper-2); }
.toc-title{ font-size:12px; font-weight:800; letter-spacing:.1em; color:var(--ink-3); margin-bottom:12px; }
.toc-card ol{ counter-reset:toc; }
.toc-card li{ counter-increment:toc; margin-bottom:10px; }
.toc-card li a{
  font-size:14px; color:var(--ink-2); display:flex; gap:8px; line-height:1.6;
  transition:color .2s var(--ease);
}
.toc-card li a::before{
  content:counter(toc,decimal-leading-zero);
  font-size:12px; color:var(--primary-deep); font-weight:700;
}
.toc-card li a:hover{ color:var(--primary-deep); }
.toc-note{ font-size:12px; color:var(--ink-3); margin-top:16px; padding-top:14px; border-top:1px solid var(--line); }

/* ---------- entry rows ---------- */
.entry-row{
  display:grid; gap:28px; grid-template-columns:1fr;
  padding:40px 0; border-top:1px solid var(--line);
}
.entry-row:first-of-type{ border-top:0; padding-top:0; }
@media (min-width:860px){
  .entry-row{ grid-template-columns:1fr 1fr; gap:48px; align-items:center; }
  .entry-row.reverse .entry-media{ order:2; }
}
.entry-media{
  border:1px solid var(--line); border-radius:var(--r-md); overflow:hidden;
  background:var(--paper-2); position:relative;
}
.entry-media img{ width:100%; aspect-ratio:4/3; object-fit:cover; transition:transform .28s var(--ease); }
.entry-media:hover img{ transform:scale(1.03); }
.entry-index{
  position:absolute; top:12px; left:12px; z-index:2;
  background:var(--paper); border:1px solid var(--ink); border-radius:999px;
  font-size:12px; font-weight:800; padding:2px 10px; color:var(--ink);
  font-variant-numeric:tabular-nums;
}
.entry-body p.desc{ margin-top:14px; color:var(--ink-2); font-size:16px; }
.point-list{ margin-top:20px; display:grid; gap:10px; }
.point-list li{
  display:flex; gap:10px; align-items:flex-start;
  font-size:15px; color:var(--ink-2); line-height:1.7;
  border-left:3px solid var(--line); padding:6px 0 6px 12px;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.point-list li:hover{ border-left-color:var(--primary); background:var(--paper-2); }
.point-list li::before{
  content:""; width:6px; height:6px; background:var(--primary-deep);
  margin-top:10px; flex:0 0 auto; border-radius:1px;
}
.entry-body .text-link{ margin-top:22px; }

/* ---------- checklist strip ---------- */
.strip{
  background:var(--paper-2); border-top:1px solid var(--line); border-bottom:1px solid var(--line);
  padding:44px 0; margin-top:16px;
}
.strip-grid{ display:grid; gap:20px; grid-template-columns:1fr; margin-top:26px; }
@media (min-width:640px){ .strip-grid{ grid-template-columns:1fr 1fr; } }
@media (min-width:1024px){ .strip-grid{ grid-template-columns:repeat(4,1fr); } }
.strip-item{
  background:var(--paper); border:1px solid var(--line); border-radius:var(--r-md);
  padding:20px; transition:box-shadow .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
}
.strip-item:hover{ box-shadow:var(--sh-2); transform:translateY(-3px); border-color:var(--ink); }
.strip-item .no{
  font-size:12px; font-weight:800; color:var(--primary-deep);
  font-variant-numeric:tabular-nums; letter-spacing:.08em;
}
.strip-item h3{ margin-top:10px; font-size:17px; }
.strip-item p{ margin-top:8px; font-size:14px; color:var(--ink-3); line-height:1.7; }

/* ---------- faq ---------- */
.faq-block{ padding:52px 0 8px; border-top:1px solid var(--line); }
.faq-list{ margin-top:26px; max-width:820px; }
.faq-item{ border-bottom:1px solid var(--line); }
.faq-q{
  width:100%; display:flex; align-items:center; justify-content:space-between; gap:18px;
  padding:20px 0; text-align:left; font-size:17px; font-weight:600; color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-q:hover{ color:var(--primary-deep); }
.faq-plus{ position:relative; width:20px; height:20px; flex:0 0 auto; }
.faq-plus::before,.faq-plus::after{
  content:""; position:absolute; background:var(--ink-2); border-radius:2px;
  transition:transform .3s var(--ease),background .3s var(--ease);
}
.faq-plus::before{ left:0; top:9px; width:20px; height:2px; }
.faq-plus::after{ left:9px; top:0; width:2px; height:20px; }
.faq-item.open .faq-plus::after{ transform:rotate(90deg); background:var(--primary-deep); }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .32s var(--ease); }
.faq-a p{ max-width:680px; padding:0 0 22px; font-size:15px; color:var(--ink-2); }

/* ---------- cta ---------- */
.cta-bar{ background:var(--ink); color:var(--paper); margin-top:56px; }
.cta-inner{
  display:flex; flex-direction:column; gap:22px; align-items:flex-start;
  padding:44px 0;
}
@media (min-width:860px){
  .cta-inner{ flex-direction:row; align-items:center; justify-content:space-between; gap:40px; }
}
.cta-bar h2{ color:var(--paper); }
.cta-bar p{ color:rgba(251,250,246,.66); font-size:15px; margin-top:10px; max-width:52ch; }
.cta-bar .btn-primary{ background:var(--primary); color:var(--ink); border-color:var(--primary); }
.cta-bar .btn-primary:hover{ background:var(--paper); border-color:var(--paper); }

/* ---------- privacy strip ---------- */
.privacy-strip{ background:var(--paper-2); border-top:1px solid var(--line); padding:26px 0; }
.privacy-grid{ display:grid; gap:12px; grid-template-columns:1fr; }
@media (min-width:860px){ .privacy-grid{ grid-template-columns:repeat(3,1fr); gap:26px; } }
.privacy-grid p{ font-size:13px; line-height:1.7; color:var(--ink-3); }
.privacy-grid strong{ color:var(--ink-2); font-weight:700; }

/* ---------- footer ---------- */
.site-footer{ background:var(--paper); border-top:1px solid var(--line); padding:52px 0 26px; }
.footer-grid{ display:grid; gap:32px; grid-template-columns:1fr; }
@media (min-width:700px){ .footer-grid{ grid-template-columns:1fr 1fr; } }
@media (min-width:1024px){ .footer-grid{ grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; } }
.footer-title{ font-size:12px; font-weight:800; letter-spacing:.1em; color:var(--ink-3); margin-bottom:14px; }
.footer-links li{ margin-bottom:9px; }
.footer-links a{ font-size:14px; color:var(--ink-2); transition:color .2s var(--ease); }
.footer-links a:hover{ color:var(--primary-deep); text-decoration:underline; }
.footer-bottom{
  margin-top:38px; padding-top:20px; border-top:1px solid var(--line);
  display:flex; flex-wrap:wrap; gap:10px; justify-content:space-between;
  font-size:13px; color:var(--ink-3);
}

/* ---------- modal ---------- */
.float-btn{
  position:fixed; z-index:70; left:16px; right:16px; bottom:14px;
  height:52px; border-radius:999px; background:var(--ink); color:var(--paper);
  display:flex; align-items:center; justify-content:center; gap:8px;
  font-size:15px; font-weight:600; box-shadow:var(--sh-2);
  transition:background .22s var(--ease),color .22s var(--ease);
}
@media (min-width:1024px){
  .float-btn{ left:auto; right:32px; bottom:32px; width:auto; padding:0 24px; height:50px; }
}
.float-btn:hover{ background:var(--primary); color:var(--ink); }
.modal-mask{
  position:fixed; inset:0; z-index:90; display:none;
  background:rgba(14,16,13,.62); backdrop-filter:blur(6px);
  align-items:flex-end; justify-content:center;
}
@media (min-width:768px){ .modal-mask{ align-items:center; } }
.modal-mask.show{ display:flex; }
.modal-panel{
  width:100%; max-width:480px; background:var(--paper);
  border-radius:var(--r-lg) var(--r-lg) 0 0; padding:28px 26px 26px;
  box-shadow:var(--sh-2); position:relative; max-height:92vh; overflow:auto;
}
@media (min-width:768px){ .modal-panel{ border-radius:var(--r-lg); padding:32px; } }
.modal-close{
  position:absolute; top:14px; right:14px; width:32px; height:32px;
  border-radius:999px; border:1px solid var(--line);
  display:inline-flex; align-items:center; justify-content:center; color:var(--ink-2);
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.modal-close:hover{ background:var(--paper-2); border-color:var(--ink); }
.modal-panel h3{ font-size:20px; }
.modal-panel .sub{ font-size:14px; color:var(--ink-3); margin-top:8px; }
.form-row{ margin-top:16px; }
.form-row label{ display:block; font-size:13px; font-weight:600; color:var(--ink-2); margin-bottom:7px; }
.form-row input,.form-row select,.form-row textarea{
  width:100%; height:48px; padding:0 14px;
  border:1px solid var(--line); border-radius:10px; background:var(--paper);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.form-row textarea{ height:auto; min-height:88px; padding:12px 14px; resize:vertical; line-height:1.7; }
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{
  outline:none; border-color:var(--primary-deep); box-shadow:0 0 0 4px rgba(78,122,31,.16);
}
.form-submit{
  width:100%; height:52px; margin-top:20px; border-radius:999px;
  background:var(--ink); color:var(--paper); font-size:15px; font-weight:700;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.form-submit:hover{ background:var(--primary); color:var(--ink); }
.form-privacy{ display:flex; gap:10px; align-items:flex-start; margin-top:14px; }
.form-privacy input{ width:16px; height:16px; margin-top:3px; accent-color:var(--primary-deep); }
.form-privacy span{ font-size:12px; line-height:1.6; color:var(--ink-3); }

/* ---------- drawer ---------- */
.drawer{
  position:fixed; inset:0; z-index:95; background:var(--paper);
  display:none; flex-direction:column; padding:18px 20px 26px;
}
.drawer.show{ display:flex; }
.drawer-top{ display:flex; align-items:center; justify-content:space-between; }
.drawer-links{ margin-top:34px; display:grid; gap:6px; }
.drawer-links a{
  font-size:20px; font-weight:600; padding:14px 0; border-bottom:1px solid var(--line);
  transition:color .2s var(--ease);
}
.drawer-links a.active{ color:var(--primary-deep); }
.drawer-bottom{ margin-top:auto; padding-top:22px; }
.drawer-bottom .small{ margin-top:12px; }

/* ---------- reveal ---------- */
.reveal{ opacity:0; transform:translateY(16px); transition:opacity .52s var(--ease),transform .52s var(--ease); }
.reveal.is-in{ opacity:1; transform:none; }
@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  .reveal{ opacity:1; transform:none; transition:none; }
  .entry-media img,.btn,.faq-a{ transition:none; }
}

@media (max-width:520px){
  body{ font-size:16px; }
  .hero-actions .btn{ width:100%; }
  .anchor-scroll a{ font-size:12px; padding:6px 12px; }
}

/* roulang page: article */
:root{
  --ink:#1C1A16;
  --ink-2:#3A362E;
  --ink-3:#6E675A;
  --paper:#F6F0E2;
  --paper-2:#EDE4D1;
  --paper-3:#E3D8C0;
  --line:#D6C9AF;
  --primary:#B6552F;
  --primary-deep:#8A3D1F;
  --accent:#3E6B4C;
  --r-sm:6px;
  --r-md:10px;
  --r-lg:16px;
  --sh-1:2px 2px 0 rgba(28,26,22,.14);
  --sh-2:5px 5px 0 rgba(28,26,22,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC",Georgia,serif;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  background-image:radial-gradient(rgba(28,26,22,.045) 1px,transparent 1px);
  background-size:18px 18px;
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--primary-deep);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}
.small{font-size:13px;line-height:1.7}
.muted{color:var(--ink-3)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:transparent;
  transition:background .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(246,240,226,.9);
  backdrop-filter:blur(12px);
  border-bottom-color:var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:64px}
.nav-left{display:flex;align-items:center;gap:30px}
.brand{display:inline-flex;align-items:center;gap:8px;font-weight:800;font-size:17px;letter-spacing:-.01em}
.brand-mark{width:13px;height:13px;background:var(--primary);border:2px solid var(--ink);display:inline-block;transform:rotate(45deg)}
.brand-sub{font-size:11px;font-weight:600;letter-spacing:.1em;padding:2px 7px;border:1px solid var(--line);border-radius:999px;color:var(--ink-3)}
.nav-links{display:none;gap:24px;font-size:14.5px}
.nav-links a{position:relative;padding:6px 0;color:var(--ink-2);transition:color .2s var(--ease)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--primary);transition:width .24s var(--ease)}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-right{display:flex;align-items:center;gap:10px}
.icon-btn{width:38px;height:38px;border:1px solid var(--line);border-radius:50%;display:inline-flex;align-items:center;justify-content:center;color:var(--ink-2);transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease)}
.icon-btn:hover{border-color:var(--ink);color:var(--ink);background:var(--paper-2)}
.hamburger{display:inline-flex}
.nav-cta{display:none}
@media(min-width:640px){.nav-cta{display:inline-flex}}
@media(min-width:1024px){
  .nav{height:68px}
  .nav-links{display:flex}
  .hamburger{display:none}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 20px;border-radius:var(--r-sm);border:2px solid var(--ink);
  font-size:14.5px;font-weight:700;line-height:1.2;
  box-shadow:3px 3px 0 var(--ink);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn:hover{transform:translate(3px,3px);box-shadow:0 0 0 var(--ink)}
.btn:active{transform:translate(3px,3px)}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-ghost{background:transparent;color:var(--ink)}
.btn-ghost:hover{background:var(--paper-2)}
.arrow{display:inline-block;transition:transform .2s var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}

/* ---------- breadcrumb ---------- */
.crumb-bar{padding:26px 0 0}
.breadcrumb{font-size:13px;color:var(--ink-3)}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb-list li{max-width:100%}
.breadcrumb-list a{color:var(--primary-deep)}
.breadcrumb-list a:hover{text-decoration:underline;text-underline-offset:3px}
.breadcrumb-list .sep{color:var(--line)}
.breadcrumb-list .current{color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:min(46vw,420px)}

/* ---------- article head ---------- */
.art-head{padding:26px 0 34px;border-bottom:1px solid var(--line)}
.badge{display:inline-flex;align-items:center;padding:4px 11px;border:1px solid var(--ink);border-radius:999px;background:var(--paper-2);font-size:12px;letter-spacing:.06em;color:var(--ink-2)}
.art-title{font-family:var(--font-serif);font-size:clamp(29px,4.4vw,46px);line-height:1.2;font-weight:700;letter-spacing:-.01em;margin:18px 0 0;color:var(--ink)}
.art-meta{display:flex;flex-wrap:wrap;gap:10px 20px;margin-top:18px;font-size:13.5px;color:var(--ink-3)}
.art-meta span{display:inline-flex;align-items:center;gap:6px}
.art-meta b{font-weight:600;color:var(--ink-2)}
.meta-dot{width:5px;height:5px;background:var(--primary);display:inline-block}

/* ---------- article layout ---------- */
.article-wrap{padding:46px 0 0}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:48px}
@media(min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,760px) 240px;gap:56px;justify-content:space-between}
}
.article-body{font-size:17px;line-height:1.9;color:var(--ink-2);word-break:break-word}
@media(max-width:520px){.article-body{font-size:16px}}
.article-body p{margin:0 0 1.1em}
.article-body h2{font-family:var(--font-serif);font-size:clamp(21px,2.4vw,27px);line-height:1.35;color:var(--ink);margin:2em 0 .8em;padding-left:14px;border-left:4px solid var(--primary);scroll-margin-top:96px}
.article-body h3{font-size:19px;font-weight:700;color:var(--ink);margin:1.6em 0 .6em}
.article-body blockquote{margin:1.4em 0;padding:6px 0 6px 18px;border-left:3px solid var(--line);color:var(--ink-3)}
.article-body img{border-radius:12px;margin:1.5em 0}
.article-body figure{margin:1.5em 0}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:8px}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:4px}
.article-body li{position:relative;padding-left:20px;margin:.4em 0}
.article-body li::before{content:"";position:absolute;left:0;top:.85em;width:6px;height:6px;background:var(--primary-deep)}
.article-body ol{counter-reset:li}
.article-body ol li::before{counter-increment:li;content:counter(li);width:auto;height:auto;background:none;color:var(--primary-deep);font-weight:700;top:0;font-size:14px}
.article-body table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.article-body th{background:var(--paper-2);font-weight:700;color:var(--ink)}
.article-body code{background:var(--paper-2);padding:2px 6px;border-radius:4px;font-size:14px}
.article-body pre{background:var(--ink);color:var(--paper);padding:16px 18px;border-radius:10px;overflow:auto;margin:1.5em 0}
.article-body pre code{background:none;color:inherit;padding:0}
.article-body a{color:var(--primary-deep);text-decoration:underline;text-underline-offset:3px}
.empty-state{
  border:2px dashed var(--line);border-radius:var(--r-md);padding:48px 26px;text-align:center;background:var(--paper-2);
}
.empty-state h2{font-family:var(--font-serif);font-size:22px;margin:0 0 10px;color:var(--ink)}
.empty-state p{color:var(--ink-3);margin:0 0 20px;font-size:15px}
.empty-icon{width:46px;height:46px;margin:0 auto 18px;border:2px solid var(--ink-3);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--ink-3)}

/* ---------- toc ---------- */
.toc{display:none}
@media(min-width:1024px){
  .toc{display:block;position:sticky;top:100px;align-self:start;border-left:2px solid var(--line);padding-left:18px}
}
.toc-title{font-size:12px;letter-spacing:.14em;font-weight:700;color:var(--ink-3);text-transform:uppercase;margin:0 0 14px}
.toc a{display:block;font-size:13.5px;line-height:1.6;color:var(--ink-3);padding:6px 0;border-bottom:1px solid transparent;transition:color .2s var(--ease)}
.toc a:hover{color:var(--primary-deep)}
.toc a.is-current{color:var(--ink);font-weight:600}

/* ---------- article note ---------- */
.article-note{
  margin-top:40px;padding:18px 20px;background:var(--paper-2);
  border:1px solid var(--line);border-left:4px solid var(--primary);
  border-radius:var(--r-sm);font-size:13.5px;color:var(--ink-3);
}
.article-note b{color:var(--ink-2)}

/* ---------- section shared ---------- */
.section{padding:56px 0}
@media(min-width:768px){.section{padding:72px 0}}
.section-line{border-top:1px solid var(--line)}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:32px}
.sec-title{font-family:var(--font-serif);font-size:clamp(22px,3vw,32px);line-height:1.28;font-weight:700;margin:0;color:var(--ink)}
.eyebrow{font-size:12px;letter-spacing:.16em;font-weight:700;color:var(--primary-deep);margin:0 0 10px}
.sec-desc{font-size:15px;color:var(--ink-3);margin:10px 0 0;max-width:60ch}
.link-more{font-size:14px;font-weight:700;color:var(--primary-deep);display:inline-flex;align-items:center;gap:6px}
.link-more:hover .arrow{transform:translateX(4px)}

/* ---------- related list ---------- */
.rel-list{border-top:1px solid var(--line)}
.rel-item{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px;align-items:center;padding:20px 14px;border-bottom:1px solid var(--line);transition:background .22s var(--ease)}
.rel-item:hover{background:var(--paper-2)}
.rel-item h3{margin:6px 0 8px;font-size:17px;font-weight:700;color:var(--ink);font-family:var(--font-serif)}
.rel-item:hover h3{color:var(--primary-deep)}
.rel-item p{margin:0;font-size:14px;color:var(--ink-3)}
.rel-go{width:38px;height:38px;border:2px solid var(--ink);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;transition:background .2s var(--ease),color .2s var(--ease)}
.rel-item:hover .rel-go{background:var(--ink);color:var(--paper)}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line);max-width:860px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 4px;text-align:left;font-size:17px;font-weight:600;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--primary-deep)}
.faq-icon{flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform .3s var(--ease)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--ink);left:50%;top:50%}
.faq-icon::before{width:16px;height:2px;transform:translate(-50%,-50%)}
.faq-icon::after{width:2px;height:16px;transform:translate(-50%,-50%)}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq-a-inner{padding:0 4px 22px;max-width:680px;font-size:15px;color:var(--ink-3)}

/* ---------- cta ---------- */
.cta-band{background:var(--ink);color:var(--paper);border-radius:var(--r-lg);padding:36px 28px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px}
.cta-band h2{font-family:var(--font-serif);font-size:clamp(21px,2.6vw,30px);line-height:1.3;margin:0;color:var(--paper)}
.cta-band p{margin:10px 0 0;font-size:14.5px;color:rgba(246,240,226,.72);max-width:48ch}
.cta-band .btn-primary{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:3px 3px 0 rgba(246,240,226,.35)}
.cta-band .btn-primary:hover{background:var(--paper);border-color:var(--paper);color:var(--ink)}

/* ---------- privacy ---------- */
.privacy{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-md);padding:22px 24px;display:grid;gap:12px}
.privacy h2{font-size:14px;font-weight:700;letter-spacing:.06em;margin:0;color:var(--ink)}
.privacy ul{display:grid;gap:8px}
.privacy li{position:relative;padding-left:16px;font-size:13px;color:var(--ink-3)}
.privacy li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;background:var(--primary-deep)}

/* ---------- footer ---------- */
.site-footer{margin-top:64px;border-top:1px solid var(--line);background:var(--paper-2);padding:52px 0 28px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}}
.footer-title{font-size:12px;letter-spacing:.14em;font-weight:700;color:var(--ink);margin:0 0 14px;text-transform:uppercase}
.footer-links li{margin:0 0 9px}
.footer-links a{font-size:14px;color:var(--ink-3);transition:color .2s var(--ease)}
.footer-links a:hover{color:var(--primary-deep);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:var(--ink-3)}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--paper);
  padding:22px 20px 34px;display:flex;flex-direction:column;
  transform:translateY(-10px);opacity:0;pointer-events:none;
  transition:opacity .26s var(--ease),transform .26s var(--ease);
}
.drawer.is-open{opacity:1;transform:none;pointer-events:auto}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:30px}
.drawer-links{display:flex;flex-direction:column;gap:4px;flex:1}
.drawer-links a{font-size:20px;font-weight:600;padding:14px 0;border-bottom:1px solid var(--line);color:var(--ink)}
.drawer-links a.active{color:var(--primary-deep)}
.drawer-foot{display:grid;gap:12px;margin-top:24px}

/* ---------- floating trigger + modal ---------- */
.float-trigger{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  padding:12px 16px;background:rgba(246,240,226,.94);backdrop-filter:blur(10px);border-top:1px solid var(--line);
}
@media(min-width:1024px){
  .float-trigger{left:auto;right:32px;bottom:32px;padding:0;background:none;border-top:0;backdrop-filter:none}
}
.float-trigger .btn{width:100%}
@media(min-width:1024px){.float-trigger .btn{width:auto}}

.modal-mask{position:fixed;inset:0;z-index:120;display:none;align-items:flex-end;justify-content:center;background:rgba(28,26,22,.62);backdrop-filter:blur(6px);padding:0}
@media(min-width:640px){.modal-mask{align-items:center;padding:24px}}
.modal-mask.is-open{display:flex}
.modal-panel{
  width:100%;max-width:480px;background:var(--paper);border:2px solid var(--ink);border-radius:var(--r-lg);
  padding:28px 26px 26px;box-shadow:var(--sh-2);max-height:92vh;overflow:auto;position:relative;
}
.modal-title{font-family:var(--font-serif);font-size:21px;font-weight:700;margin:0 0 8px;color:var(--ink)}
.modal-sub{font-size:13.5px;color:var(--ink-3);margin:0 0 22px}
.modal-close{position:absolute;top:14px;right:14px;width:34px;height:34px;border:1px solid var(--line);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:border-color .2s var(--ease),background .2s var(--ease)}
.modal-close:hover{border-color:var(--ink);background:var(--paper-2)}
.field{display:grid;gap:7px;margin-bottom:16px}
.field label{font-size:13px;font-weight:600;color:var(--ink-2)}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--r-md);padding:12px 14px;
  background:#fff;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field input,.field select{height:48px}
.field textarea{resize:vertical;min-height:86px}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary-deep);box-shadow:0 0 0 4px rgba(138,61,31,.14);
}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-3);margin:6px 0 16px}
.consent input{margin-top:4px}
.form-btn{width:100%;height:52px}
.form-tip{font-size:13px;color:var(--accent);margin:14px 0 0;display:none}
.form-tip.is-visible{display:block}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --ink:#0E100D;
  --ink-2:#2A2E28;
  --ink-3:#6B6F66;
  --paper:#FBFAF6;
  --paper-2:#F2F0E9;
  --line:#E2DFD5;
  --primary:#C6F24E;
  --primary-deep:#4E7A1F;
  --accent:#FF6A3D;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:20px;
  --sh-1:0 1px 2px rgba(14,16,13,.04);
  --sh-2:0 12px 32px -12px rgba(14,16,13,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:56px;
}
@media (min-width:1024px){:root{--nav-h:64px}}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",ui-sans-serif,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
@media (min-width:768px){body{font-size:17px}}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary-deep);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:transparent;
  transition:background .26s var(--ease),border-color .26s var(--ease),backdrop-filter .26s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(251,250,246,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom-color:var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;height:var(--nav-h)}
.nav-left{display:flex;align-items:center;gap:34px;min-width:0}
.brand{display:inline-flex;align-items:center;gap:8px;font-weight:800;font-size:17px;letter-spacing:-.01em;color:var(--ink);white-space:nowrap}
.brand-mark{width:14px;height:14px;background:var(--primary);border:2px solid var(--ink);border-radius:4px;flex:none}
.brand-sub{font-size:12px;font-weight:600;color:var(--ink-3);letter-spacing:.08em;border-left:1px solid var(--line);padding-left:8px}
@media (max-width:520px){.brand-sub{display:none}}
.nav-links{display:flex;align-items:center;gap:24px}
.nav-links a{position:relative;font-size:14px;color:var(--ink-2);padding:6px 0;transition:color .2s var(--ease)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;background:var(--primary);transition:width .24s var(--ease)}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{width:100%}
.nav-links a.active{color:var(--ink);font-weight:600}
.nav-links a.active::after{width:100%}
.nav-right{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:36px;height:36px;border-radius:999px;border:1px solid var(--line);
  background:transparent;color:var(--ink);display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.icon-btn:hover{background:var(--paper-2);border-color:var(--ink)}
.hamburger{display:none}
@media (max-width:1023px){
  .nav-links{display:none}
  .hamburger{display:inline-flex}
  .nav-cta{display:none}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  border-radius:999px;padding:12px 22px;
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--primary);color:var(--ink);border-color:var(--ink)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--paper-2)}
.btn-light{background:var(--paper);color:var(--ink);border-color:var(--ink)}
.btn-light:hover{background:var(--primary);color:var(--ink)}
.btn .arrow{transition:transform .22s var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}
.btn-wide{width:100%;justify-content:center;height:52px;border-radius:12px}

/* ---------- hero ---------- */
.hero{padding:26px 0 42px;border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1fr;gap:28px}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:minmax(0,7fr) minmax(0,5fr);align-items:end;gap:40px}
}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--primary-deep);text-transform:uppercase}
.hero h1{
  font-size:clamp(30px,4.4vw,50px);
  line-height:1.14;
  font-weight:800;
  letter-spacing:-.02em;
  margin-top:14px;
}
.hero-lead{margin-top:16px;color:var(--ink-2);max-width:52ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:26px}
.hero-note{margin-top:18px;font-size:13px;color:var(--ink-3)}
.hero-media{
  border:2px solid var(--ink);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:6px 6px 0 rgba(14,16,13,.9);
  aspect-ratio:16/10;
  background:var(--paper-2);
}
.hero-media img{width:100%;height:100%;object-fit:cover}
@media (max-width:767px){
  .hero-media{aspect-ratio:16/9;max-height:240px}
}

/* ---------- anchor bar ---------- */
.anchor-bar{
  position:sticky;top:var(--nav-h);z-index:50;
  background:rgba(251,250,246,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.anchor-scroll{
  display:flex;gap:10px;align-items:center;
  overflow-x:auto;
  padding:12px 0;
  scrollbar-width:none;
}
.anchor-scroll::-webkit-scrollbar{display:none}
.anchor-pill{
  flex:none;
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;
  padding:8px 16px;border-radius:999px;
  border:1px solid var(--line);
  background:var(--paper);
  color:var(--ink-2);
  white-space:nowrap;
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.anchor-pill:hover{background:var(--primary);border-color:var(--ink);color:var(--ink);transform:translateY(-2px)}

/* ---------- sections ---------- */
.sec{padding:54px 0;border-bottom:1px solid var(--line)}
@media (min-width:768px){.sec{padding:74px 0}}
@media (min-width:1024px){.sec{padding:88px 0}}
section[id]{scroll-margin-top:calc(var(--nav-h) + 68px)}
.sec-head{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between;margin-bottom:32px}
.sec-title{font-size:clamp(24px,3vw,36px);line-height:1.2;font-weight:700;letter-spacing:-.01em;margin-top:10px}
.sec-desc{margin-top:12px;color:var(--ink-2);max-width:60ch}
.sec-link{font-size:14px;font-weight:600;color:var(--primary-deep);display:inline-flex;align-items:center;gap:6px;border-bottom:1px solid transparent;transition:border-color .2s var(--ease),gap .2s var(--ease)}
.sec-link:hover{border-bottom-color:var(--primary-deep);gap:10px}

/* ---------- card grid ---------- */
.card-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:768px){.card-grid{grid-template-columns:repeat(2,1fr)}}
.fcard{
  display:flex;flex-direction:column;
  border:2px solid var(--ink);
  border-radius:var(--r-md);
  background:var(--paper);
  overflow:hidden;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.fcard:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 rgba(14,16,13,.9)}
.fcard-media{aspect-ratio:16/10;overflow:hidden;border-bottom:2px solid var(--ink);background:var(--paper-2)}
.fcard-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease)}
.fcard:hover .fcard-media img{transform:scale(1.03)}
.fcard-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px}
.fcard-index{font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--primary-deep)}
.fcard-title{font-size:19px;font-weight:700;line-height:1.35}
.fcard-text{font-size:15px;color:var(--ink-2);line-height:1.75}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}
.tag{font-size:12px;line-height:1;border:1px solid var(--line);border-radius:999px;padding:6px 11px;color:var(--ink-2);background:var(--paper-2)}
.tag-primary{background:var(--primary);border-color:var(--ink);color:var(--ink);font-weight:600}

/* ---------- dark scene ---------- */
.scene{
  position:relative;overflow:hidden;
  border:2px solid var(--ink);
  border-radius:var(--r-lg);
  background:var(--ink);
  color:var(--paper);
  padding:32px 24px;
}
@media (min-width:768px){.scene{padding:48px 40px}}
.scene::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.16;
}
.scene::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(to right,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:64px 100%;
  pointer-events:none;
}
.scene-inner{position:relative;z-index:2}
.scene h2{font-size:clamp(24px,3vw,34px);line-height:1.22;font-weight:700;letter-spacing:-.01em;margin-top:10px}
.scene .eyebrow{color:var(--primary)}
.scene-lead{margin-top:14px;max-width:56ch;color:rgba(251,250,246,.78)}
.steps{margin-top:28px;display:grid;gap:0}
.step{
  display:grid;
  grid-template-columns:44px minmax(0,1fr);
  gap:16px;
  padding:18px 0;
  border-top:1px solid rgba(255,255,255,.14);
}
.step:last-child{border-bottom:1px solid rgba(255,255,255,.14)}
.step-num{
  font-size:15px;font-weight:800;color:var(--primary);
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:17px;font-weight:600;color:var(--paper);margin-bottom:6px}
.step p{font-size:15px;color:rgba(251,250,246,.72);line-height:1.75}

/* ---------- split ---------- */
.split{display:grid;grid-template-columns:1fr;gap:28px}
@media (min-width:1024px){.split{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:44px;align-items:center}}
.split-media{
  border:2px solid var(--ink);border-radius:var(--r-md);overflow:hidden;
  box-shadow:6px 6px 0 rgba(14,16,13,.9);
  aspect-ratio:4/3;background:var(--paper-2);
}
.split-media img{width:100%;height:100%;object-fit:cover}
.check-list{margin-top:20px;display:grid;gap:14px}
.check-list li{
  display:grid;grid-template-columns:22px minmax(0,1fr);gap:12px;
  font-size:15px;color:var(--ink-2);line-height:1.75;
}
.check-list li::before{
  content:"";width:8px;height:8px;margin-top:9px;background:var(--primary-deep);border-radius:2px;
}

/* ---------- stat band ---------- */
.statband{background:var(--ink);color:var(--paper);padding:56px 0;position:relative;overflow:hidden}
.statband::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(to right,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:72px 100%;
}
.stat-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:768px){.stat-grid{grid-template-columns:repeat(3,1fr);gap:36px}}
.stat-num{font-size:clamp(38px,5vw,58px);font-weight:900;line-height:1;color:var(--primary);font-variant-numeric:tabular-nums}
.stat-label{margin-top:12px;font-size:16px;font-weight:600}
.stat-note{margin-top:8px;font-size:13px;color:rgba(251,250,246,.6);line-height:1.7}

/* ---------- faq ---------- */
.faq{margin-top:8px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 0;background:none;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;
}
.faq-icon{
  flex:none;width:22px;height:22px;position:relative;
  transition:transform .32s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink-3);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:16px;height:2px}
.faq-icon::after{width:2px;height:16px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq-a-inner{padding-bottom:20px;max-width:680px;font-size:15px;color:var(--ink-2);line-height:1.8}

/* ---------- cta / privacy ---------- */
.cta-band{
  border:2px solid var(--ink);border-radius:var(--r-lg);
  background:var(--ink);color:var(--paper);
  padding:32px 24px;
  display:flex;flex-wrap:wrap;gap:22px;align-items:center;justify-content:space-between;
}
@media (min-width:768px){.cta-band{padding:40px}}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.25;letter-spacing:-.01em}
.cta-band p{margin-top:10px;font-size:15px;color:rgba(251,250,246,.72);max-width:46ch}
.privacy-band{
  margin-top:26px;
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:20px 22px;
  font-size:13px;line-height:1.8;color:var(--ink-2);
}
.privacy-band ul{display:grid;gap:8px;margin-top:10px}
.privacy-band li{display:grid;grid-template-columns:14px minmax(0,1fr);gap:10px}
.privacy-band li::before{content:"";width:6px;height:6px;margin-top:8px;background:var(--primary-deep);border-radius:50%}

/* ---------- footer ---------- */
.site-footer{
  background:var(--paper-2);
  border-top:1px solid var(--line);
  padding:52px 0 24px;
  margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:30px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}}
.footer-title{font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--ink-3);margin-bottom:14px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:var(--ink-2);border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease)}
.footer-links a:hover{color:var(--primary-deep);border-bottom-color:var(--primary-deep)}
.footer-bottom{
  margin-top:34px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--ink-3);
}
.small{font-size:13px;line-height:1.7}
.muted{color:var(--ink-3)}

/* ---------- floating cta + modal ---------- */
.float-cta{position:fixed;right:24px;bottom:24px;z-index:70}
@media (max-width:767px){
  .float-cta{left:12px;right:12px;bottom:12px}
  .float-cta .btn{width:100%;justify-content:center;height:50px}
}
.modal-overlay{
  position:fixed;inset:0;z-index:90;
  background:rgba(14,16,13,.62);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
  display:none;align-items:center;justify-content:center;
  padding:20px;
}
.modal-overlay.open{display:flex}
.modal-panel{
  position:relative;
  width:100%;max-width:480px;
  background:#fff;
  border:2px solid var(--ink);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-2);
  padding:30px 26px;
  max-height:90vh;overflow:auto;
  animation:modalIn .28s var(--ease);
}
@keyframes modalIn{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
.modal-panel h3{font-size:22px;font-weight:700;letter-spacing:-.01em}
.modal-panel .modal-sub{margin-top:8px;font-size:14px;color:var(--ink-2)}
.modal-close{
  position:absolute;top:16px;right:16px;
  width:32px;height:32px;border-radius:999px;
  border:1px solid var(--line);background:transparent;
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;color:var(--ink);
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.modal-close:hover{background:var(--paper-2);border-color:var(--ink)}
.field{margin-top:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;
  border:1px solid var(--line);border-radius:10px;
  background:var(--paper);color:var(--ink);font-size:15px;font-family:inherit;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:92px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary-deep);
  box-shadow:0 0 0 4px rgba(78,122,31,.16);
}
.consent{margin-top:16px;display:grid;grid-template-columns:18px minmax(0,1fr);gap:10px;font-size:13px;color:var(--ink-2);line-height:1.7}
.consent input{width:16px;height:16px;margin-top:4px}
.modal-actions{margin-top:22px}
.modal-privacy{margin-top:12px;font-size:13px;color:var(--ink-3);line-height:1.7}
@media (max-width:767px){
  .modal-overlay{align-items:flex-end;padding:0}
  .modal-panel{max-width:none;border-radius:20px 20px 0 0;max-height:92vh;padding:26px 20px 30px}
}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:95;
  background:var(--paper);
  transform:translateY(-100%);
  transition:transform .3s var(--ease);
  display:flex;flex-direction:column;
  padding:20px 0 32px;
  overflow-y:auto;
}
.drawer.open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:0 20px 20px;border-bottom:1px solid var(--line)}
.drawer-links{padding:22px 20px;display:grid;gap:18px}
.drawer-links a{font-size:20px;font-weight:600;color:var(--ink)}
.drawer-links a.active{color:var(--primary-deep)}
.drawer-foot{margin-top:auto;padding:22px 20px 0;border-top:1px solid var(--line);display:grid;gap:14px}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{animation:none!important;transition:none!important}
}

/* roulang page: category2 */
:root{
  --ink:#0E100D;
  --ink-2:#2A2E28;
  --ink-3:#6B6F66;
  --paper:#FBFAF6;
  --paper-2:#F2F0E9;
  --line:#E2DFD5;
  --primary:#C6F24E;
  --primary-deep:#4E7A1F;
  --accent:#FF6A3D;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:20px;
  --sh-1:0 1px 2px rgba(14,16,13,.04);
  --sh-2:0 12px 32px -12px rgba(14,16,13,.18);
  --nav-h:56px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
@media (min-width:1024px){:root{--nav-h:64px}}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",ui-sans-serif,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,p{margin:0}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--primary-deep);outline-offset:2px;border-radius:4px}
::selection{background:var(--primary);color:var(--ink)}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}

.num{font-variant-numeric:tabular-nums}
.small{font-size:13px;line-height:1.7}
.muted{color:var(--ink-3)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(251,250,246,0);
  border-bottom:1px solid transparent;
  transition:background .28s var(--ease),border-color .28s var(--ease),backdrop-filter .28s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(251,250,246,.88);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;height:var(--nav-h)}
.nav > .flex{display:flex;align-items:center;gap:28px;min-width:0}
.brand{display:inline-flex;align-items:center;gap:9px;font-weight:800;font-size:17px;letter-spacing:-.01em;height:32px;white-space:nowrap}
.brand-mark{width:14px;height:14px;border-radius:3px;background:var(--primary);border:1.5px solid var(--ink);flex:none}
.brand-sub{font-size:11px;font-weight:600;letter-spacing:.14em;color:var(--ink-3);border:1px solid var(--line);border-radius:999px;padding:1px 8px}
.nav-links{display:none;align-items:center;gap:22px}
.nav-links a{position:relative;font-size:14.5px;color:var(--ink-2);padding:6px 0;transition:color .22s var(--ease)}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .26s var(--ease)}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--ink);font-weight:600}
.nav-links a.active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:36px;height:36px;border-radius:999px;
  border:1px solid var(--line);background:rgba(251,250,246,.6);
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink-2);
  transition:background .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.icon-btn:hover{background:var(--paper-2);border-color:var(--ink-3);transform:translateY(-1px)}
.nav-cta{display:none}
.hamburger{display:inline-flex}
@media (min-width:1024px){
  .nav-links{display:flex}
  .nav-cta{display:inline-flex}
  .hamburger{display:none}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:999px;
  font-size:14.5px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--primary);color:var(--ink);border-color:var(--ink)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--paper-2)}
.btn .arrow{display:inline-block;transition:transform .22s var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}
.btn-block{width:100%}
.link-more{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:14.5px;color:var(--primary-deep);border-bottom:1px solid transparent;transition:border-color .22s var(--ease)}
.link-more .arrow{transition:transform .22s var(--ease)}
.link-more:hover{border-color:var(--primary-deep)}
.link-more:hover .arrow{transform:translateX(4px)}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--paper);
  display:flex;flex-direction:column;
  padding:20px;transform:translateY(-102%);
  transition:transform .34s var(--ease);
  visibility:hidden;
}
.drawer.is-open{transform:translateY(0);visibility:visible}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:56px}
.drawer-links{display:flex;flex-direction:column;gap:4px;margin-top:24px}
.drawer-links a{font-size:20px;font-weight:600;padding:12px 0;border-bottom:1px solid var(--line)}
.drawer-links a.active{color:var(--primary-deep)}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;padding-top:20px}
@media (min-width:1024px){.drawer{display:none}}

/* ---------- hero ---------- */
.hero{padding:28px 0 44px;border-bottom:1px solid var(--line)}
@media (min-width:768px){.hero{padding:40px 0 56px}}
@media (min-width:1024px){.hero{padding:48px 0 64px}}
.hero-grid{display:grid;gap:32px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:56px}}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--ink-3);text-transform:uppercase}
.eyebrow::before{content:"";width:8px;height:8px;background:var(--primary);border:1.5px solid var(--ink);border-radius:2px}
.hero h1{
  margin-top:16px;
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.12;font-weight:800;letter-spacing:-.02em;
}
.lead{margin-top:18px;font-size:17px;color:var(--ink-2);max-width:44ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:28px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;margin-top:26px;
  font-size:13px;color:var(--ink-2);border:1px dashed var(--line);
  border-radius:999px;padding:7px 16px;background:var(--paper-2);
}
.hero-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary-deep)}
.hero-media{border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:var(--paper-2);box-shadow:var(--sh-1)}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover}

/* ---------- anchor bar ---------- */
.anchor-bar{
  position:sticky;top:var(--nav-h);z-index:50;
  background:rgba(251,250,246,.92);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.anchor-scroll{display:flex;gap:10px;overflow-x:auto;padding:12px 0;scrollbar-width:none}
.anchor-scroll::-webkit-scrollbar{display:none}
.anchor-scroll a{
  flex:none;font-size:13.5px;font-weight:600;color:var(--ink-2);
  border:1px solid var(--line);border-radius:999px;padding:7px 15px;background:var(--paper);
  transition:background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.anchor-scroll a:hover{background:var(--paper-2);border-color:var(--ink-3);color:var(--ink)}

/* ---------- sections ---------- */
.section{padding:52px 0}
@media (min-width:768px){.section{padding:76px 0}}
@media (min-width:1024px){.section{padding:92px 0}}
.section + .section{border-top:1px solid var(--line)}
.section-head{max-width:760px}
.section-head h2{font-size:clamp(23px,2.9vw,36px);line-height:1.22;font-weight:700;letter-spacing:-.01em}
.section-head p{margin-top:14px;color:var(--ink-3)}
.section-head .tag{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--primary-deep);border:1px solid var(--line);border-radius:999px;padding:4px 12px;margin-bottom:16px}

/* ---------- timeline ---------- */
.timeline{margin-top:44px;position:relative}
.tl-item{position:relative;padding-left:64px;padding-bottom:38px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:"";position:absolute;left:19px;top:44px;bottom:0;width:1px;background:var(--line)}
.tl-item:last-child::before{display:none}
.tl-dot{
  position:absolute;left:0;top:0;width:40px;height:40px;border-radius:50%;
  border:1px solid var(--ink);background:var(--paper);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;color:var(--primary-deep);font-variant-numeric:tabular-nums;
  transition:background .24s var(--ease),transform .24s var(--ease);
}
.tl-item:hover .tl-dot{background:var(--primary);transform:translateY(-2px)}
.tl-item h3{font-size:19px;font-weight:600;letter-spacing:-.005em}
.tl-item p{margin-top:8px;color:var(--ink-3);max-width:62ch;font-size:15.5px}
.tl-meta{display:inline-block;margin-top:10px;font-size:12.5px;color:var(--ink-3);border-left:2px solid var(--primary);padding-left:10px}

/* ---------- spec table ---------- */
.table-wrap{margin-top:36px;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;background:var(--paper)}
.spec-table th,.spec-table td{
  border-bottom:1px solid var(--line);
  padding:15px 18px;text-align:left;vertical-align:top;font-size:15px;
}
.spec-table thead th{background:var(--paper-2);font-size:12.5px;font-weight:700;letter-spacing:.08em;color:var(--ink-2)}
.spec-table tbody tr:last-child th,.spec-table tbody tr:last-child td{border-bottom:0}
.spec-table tbody th{width:34%;font-weight:600;color:var(--ink)}
.spec-table tbody td{color:var(--ink-3)}
.spec-table tbody tr{transition:background .22s var(--ease)}
.spec-table tbody tr:hover{background:var(--paper-2)}

/* ---------- media blocks ---------- */
.media-row{display:grid;gap:28px;align-items:center;margin-top:40px}
@media (min-width:1024px){
  .media-row{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px}
  .media-row.flip .media-figure{order:2}
}
.media-figure{border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;background:var(--paper-2)}
.media-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .3s var(--ease)}
.media-figure:hover img{transform:scale(1.03)}
.media-body h3{font-size:22px;font-weight:600;letter-spacing:-.01em}
.media-body p{margin-top:14px;color:var(--ink-3)}
.point-list{margin-top:22px;display:flex;flex-direction:column;gap:14px}
.point-list li{display:flex;gap:12px;font-size:15.5px;color:var(--ink-2);line-height:1.7}
.point-list li::before{content:"";flex:none;width:7px;height:7px;margin-top:11px;background:var(--primary-deep);border-radius:1px}

/* ---------- plain info list ---------- */
.info-grid{display:grid;gap:1px;margin-top:40px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden}
@media (min-width:768px){.info-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.info-cell{background:var(--paper);padding:24px 22px}
.info-cell h3{font-size:17px;font-weight:600}
.info-cell p{margin-top:10px;font-size:15px;color:var(--ink-3)}

/* ---------- faq ---------- */
.faq{margin-top:36px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;font-size:17.5px;font-weight:600;color:var(--ink);
  transition:color .22s var(--ease);
}
.faq-q:hover{color:var(--primary-deep)}
.faq-plus{
  flex:none;width:20px;height:20px;position:relative;transition:transform .3s var(--ease);
}
.faq-plus::before,.faq-plus::after{content:"";position:absolute;background:var(--ink-2);border-radius:2px}
.faq-plus::before{left:0;right:0;top:9px;height:2px}
.faq-plus::after{top:0;bottom:0;left:9px;width:2px}
.faq-item.is-open .faq-plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq-a p{padding-bottom:22px;max-width:680px;color:var(--ink-3);font-size:15.5px}

/* ---------- cta ---------- */
.cta-band{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cta-inner{display:flex;flex-direction:column;gap:22px;padding:52px 0}
@media (min-width:768px){.cta-inner{flex-direction:row;align-items:center;justify-content:space-between;gap:40px;padding:64px 0}}
.cta-inner h2{font-size:clamp(22px,2.6vw,32px);line-height:1.24;font-weight:700;letter-spacing:-.01em}
.cta-inner p{margin-top:10px;color:var(--ink-3);font-size:15.5px}
.cta-inner .btn{flex:none}

/* ---------- privacy ---------- */
.privacy{background:var(--paper);padding:26px 0}
.privacy-list{display:grid;gap:10px;font-size:13px;color:var(--ink-3);line-height:1.7}
@media (min-width:768px){.privacy-list{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}}
.privacy-list li{display:flex;gap:8px}
.privacy-list li::before{content:"·";color:var(--primary-deep);font-weight:800}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--paper);padding:52px 0 26px}
.footer-grid{display:grid;gap:34px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}}
.footer-title{font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--ink-3);margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14.5px;color:var(--ink-2);transition:color .22s var(--ease)}
.footer-links a:hover{color:var(--primary-deep);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:8px;font-size:13px;color:var(--ink-3)}
@media (min-width:768px){.footer-bottom{flex-direction:row;justify-content:space-between;gap:20px}}

/* ---------- fab + modal ---------- */
.fab{
  position:fixed;left:16px;right:16px;bottom:16px;z-index:70;
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:50px;border-radius:999px;background:var(--ink);color:var(--paper);
  font-size:15px;font-weight:600;box-shadow:var(--sh-2);
  transition:background .22s var(--ease),color .22s var(--ease);
}
.fab:hover{background:var(--primary);color:var(--ink)}
@media (min-width:1024px){
  .fab{left:auto;right:32px;bottom:32px;height:48px;padding:0 24px;border-radius:999px}
}
.modal-mask{
  position:fixed;inset:0;z-index:100;display:flex;align-items:flex-end;justify-content:center;
  background:rgba(14,16,13,.62);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s var(--ease);
}
.modal-mask.is-open{opacity:1;visibility:visible}
.modal-panel{
  position:relative;background:#fff;width:100%;max-width:480px;
  border-radius:var(--r-lg) var(--r-lg) 0 0;padding:28px 24px 30px;
  box-shadow:var(--sh-2);max-height:92vh;overflow-y:auto;
  transform:translateY(24px);transition:transform .32s var(--ease);
}
@media (min-width:768px){
  .modal-mask{align-items:center}
  .modal-panel{border-radius:var(--r-lg);padding:32px;transform:translateY(12px) scale(.98)}
}
.modal-mask.is-open .modal-panel{transform:translateY(0) scale(1)}
.modal-panel h3{font-size:21px;font-weight:700}
.modal-panel .modal-sub{margin-top:8px;font-size:14px;color:var(--ink-3)}
.modal-close{
  position:absolute;top:16px;right:16px;width:32px;height:32px;border-radius:999px;
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--ink-2);
  transition:background .22s var(--ease);
}
.modal-close:hover{background:var(--paper-2)}
.field{margin-top:18px}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:8px;color:var(--ink-2)}
.field input,.field select,.field textarea{
  width:100%;height:48px;border:1px solid var(--line);border-radius:10px;
  padding:0 14px;background:var(--paper);font-size:15px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.field textarea{height:auto;padding:12px 14px;resize:vertical;min-height:88px;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary-deep);background:#fff;
  box-shadow:0 0 0 4px rgba(78,122,31,.14);
}
.consent{display:flex;gap:10px;align-items:flex-start;margin-top:18px;font-size:13px;color:var(--ink-3);line-height:1.65}
.consent input{width:16px;height:16px;margin-top:3px;flex:none;accent-color:var(--primary-deep)}
.modal-submit{margin-top:20px;height:52px;width:100%;border-radius:999px;background:var(--ink);color:var(--paper);font-size:15.5px;font-weight:600;transition:background .22s var(--ease),color .22s var(--ease)}
.modal-submit:hover{background:var(--primary);color:var(--ink)}
.modal-note{margin-top:14px;font-size:12.5px;color:var(--ink-3);line-height:1.6}

/* ---------- back to top ---------- */
.to-top{
  position:fixed;right:16px;bottom:78px;z-index:65;
  width:44px;height:44px;border-radius:999px;border:1px solid var(--line);
  background:rgba(251,250,246,.92);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  display:flex;align-items:center;justify-content:center;color:var(--ink-2);
  opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s var(--ease),transform .26s var(--ease);
}
.to-top.is-show{opacity:1;visibility:visible}
.to-top:hover{transform:translateY(-2px);background:var(--paper-2)}
@media (min-width:1024px){.to-top{right:32px;bottom:96px}}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}
}

/* roulang page: category4 */
:root{
  --ink:#0E100D;
  --ink-2:#2A2E28;
  --ink-3:#6B6F66;
  --paper:#FBFAF6;
  --paper-2:#F2F0E9;
  --line:#E2DFD5;
  --primary:#C6F24E;
  --primary-deep:#4E7A1F;
  --accent:#FF6A3D;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:20px;
  --sh-1:0 1px 2px rgba(14,16,13,.04);
  --sh-2:0 12px 32px -12px rgba(14,16,13,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:56px;
}
@media (min-width:1024px){ :root{ --header-h:64px; } }

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{ display:block; max-width:100%; height:auto; }
a{ color:inherit; text-decoration:none; }
button,input,select,textarea{ font:inherit; color:inherit; }
button{ background:none; border:0; cursor:pointer; }
h1,h2,h3,h4,p,ul,ol,figure{ margin:0; }
ul,ol{ padding:0; list-style:none; }
:focus-visible{ outline:2px solid var(--primary-deep); outline-offset:2px; }
::selection{ background:var(--primary); color:var(--ink); }
.num,.stat-num{ font-variant-numeric:tabular-nums; }

.container{ width:100%; max-width:1240px; margin:0 auto; padding:0 20px; }
@media (min-width:768px){ .container{ padding:0 32px; } }
.small{ font-size:13px; line-height:1.7; }
.muted{ color:var(--ink-3); }
.sr-only{ position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; }

/* ---------- header ---------- */
.site-header{
  position:sticky; top:0; z-index:60;
  background:rgba(251,250,246,0);
  transition:background .28s var(--ease), border-color .28s var(--ease), backdrop-filter .28s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(251,250,246,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav{ display:flex; align-items:center; justify-content:space-between; min-height:var(--header-h); gap:16px; }
.brand{ display:inline-flex; align-items:center; gap:8px; font-weight:800; font-size:16px; letter-spacing:-.01em; height:32px; white-space:nowrap; }
.brand-mark{ width:11px; height:11px; background:var(--primary); border:1px solid var(--ink); flex:0 0 auto; }
.brand-sub{ font-size:11px; font-weight:600; letter-spacing:.14em; color:var(--ink-3); border:1px dashed var(--line); border-radius:999px; padding:1px 8px; }
.nav-links{ display:none; align-items:center; gap:22px; }
@media (min-width:1024px){ .nav-links{ display:flex; } }
.nav-links a{ position:relative; font-size:14px; color:var(--ink-2); padding:6px 0; transition:color .2s var(--ease); }
.nav-links a::after{
  content:""; position:absolute; left:0; right:0; bottom:0; height:2px; background:var(--primary);
  transform:scaleX(0); transform-origin:left; transition:transform .26s var(--ease);
}
.nav-links a:hover{ color:var(--ink); }
.nav-links a:hover::after{ transform:scaleX(1); }
.nav-links a.active{ color:var(--ink); font-weight:600; }
.nav-links a.active::after{ transform:scaleX(1); }
.nav-right{ display:flex; align-items:center; gap:10px; }
.icon-btn{
  width:36px; height:36px; border-radius:999px; border:1px solid var(--line);
  display:inline-flex; align-items:center; justify-content:center; color:var(--ink-2);
  transition:background .22s var(--ease), border-color .22s var(--ease), transform .22s var(--ease);
}
.icon-btn:hover{ background:var(--paper-2); border-color:var(--ink-3); }
.icon-btn:active{ transform:translateY(1px); }
.hamburger{ display:inline-flex; font-size:18px; line-height:1; }
@media (min-width:1024px){ .hamburger{ display:none; } }
.nav-cta{ display:none; height:40px; padding:0 18px; font-size:13px; }
@media (min-width:1024px){ .nav-cta{ display:inline-flex; } }

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:46px; padding:0 22px; border-radius:999px;
  font-size:14px; font-weight:600; border:1px solid transparent;
  transition:background .24s var(--ease), color .24s var(--ease), border-color .24s var(--ease), transform .24s var(--ease);
}
.btn-primary{ background:var(--ink); color:var(--paper); }
.btn-primary:hover{ background:var(--primary); color:var(--ink); }
.btn-ghost{ background:transparent; border-color:var(--ink); color:var(--ink); }
.btn-ghost:hover{ background:var(--paper-2); }
.btn .arrow{ transition:transform .24s var(--ease); }
.btn:hover .arrow{ transform:translateX(4px); }
.btn-block{ width:100%; height:52px; }

/* ---------- drawer ---------- */
.drawer{
  position:fixed; inset:0; z-index:80; background:var(--paper);
  display:flex; flex-direction:column; padding:16px 20px 28px;
  opacity:0; pointer-events:none; transform:translateY(-10px);
  transition:opacity .26s var(--ease), transform .26s var(--ease);
}
.drawer.open{ opacity:1; pointer-events:auto; transform:none; }
.drawer-head{ display:flex; align-items:center; justify-content:space-between; min-height:56px; }
.drawer-links{ display:flex; flex-direction:column; gap:4px; margin-top:18px; }
.drawer-links a{ font-size:20px; font-weight:600; padding:12px 0; border-bottom:1px solid var(--line); }
.drawer-links a.active{ color:var(--primary-deep); }
.drawer-foot{ margin-top:auto; display:flex; flex-direction:column; gap:10px; padding-top:24px; }

/* ---------- hero ---------- */
.page-hero{
  position:relative; overflow:hidden;
  background-image:linear-gradient(rgba(251,250,246,.94),rgba(251,250,246,.97)),url('/assets/images/backpic/back-2.webp');
  background-size:cover; background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:""; position:absolute; inset:auto 0 0 0; height:4px;
  background:repeating-linear-gradient(90deg,var(--primary) 0 28px,transparent 28px 56px);
  opacity:.7;
}
.hero-grid{ display:grid; grid-template-columns:1fr; gap:28px; padding:44px 20px 48px; }
@media (min-width:768px){ .hero-grid{ padding:56px 32px 60px; } }
@media (min-width:1024px){ .hero-grid{ grid-template-columns:7fr 5fr; gap:56px; align-items:center; padding:64px 32px 68px; } }
.eyebrow{
  display:inline-flex; align-items:center; gap:8px; font-size:12px; font-weight:700;
  letter-spacing:.1em; color:var(--primary-deep); text-transform:uppercase;
}
.eyebrow::before{ content:""; width:9px; height:9px; background:var(--primary); border:1px solid var(--ink); }
h1{
  font-size:clamp(32px,4.6vw,54px); line-height:1.1; font-weight:800; letter-spacing:-.02em;
  margin:16px 0 0; max-width:22ch;
}
.hero-sub{ margin-top:16px; font-size:16px; color:var(--ink-2); max-width:34ch; }
.hero-actions{ display:flex; flex-wrap:wrap; gap:14px; margin-top:26px; }
.hero-aside{ border-left:1px solid var(--line); padding-left:0; }
@media (min-width:1024px){ .hero-aside{ padding-left:28px; } }
.hero-lead{ font-size:15px; color:var(--ink-2); margin-bottom:18px; max-width:36ch; }
.hero-figure{ position:relative; border:1px solid var(--line); border-radius:var(--r-lg); overflow:hidden; background:var(--paper-2); }
.hero-figure img{ width:100%; aspect-ratio:16/10; object-fit:cover; }
.hero-figure figcaption{
  position:absolute; left:14px; bottom:14px; background:rgba(251,250,246,.92);
  border:1px dashed var(--line); border-radius:999px; padding:4px 12px; font-size:12px; color:var(--ink-2);
}

/* ---------- breadcrumb ---------- */
.crumb{ font-size:13px; color:var(--ink-3); padding:16px 0 0; }
.crumb ol{ display:flex; flex-wrap:wrap; gap:8px; align-items:center; }
.crumb li{ display:inline-flex; align-items:center; gap:8px; }
.crumb li+li::before{ content:"/"; color:var(--line); }
.crumb a{ color:var(--primary-deep); }
.crumb a:hover{ text-decoration:underline; }
.crumb [aria-current="page"]{ color:var(--ink); }

/* ---------- anchor bar ---------- */
.anchor-bar{
  position:sticky; top:var(--header-h); z-index:40;
  background:rgba(251,250,246,.94); backdrop-filter:blur(10px); -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.anchor-inner{ display:flex; gap:8px; overflow-x:auto; padding:11px 0; scrollbar-width:none; }
.anchor-inner::-webkit-scrollbar{ display:none; }
.anchor-link{
  white-space:nowrap; font-size:13px; padding:7px 15px; border:1px solid var(--line);
  border-radius:999px; color:var(--ink-2);
  transition:background .22s var(--ease), border-color .22s var(--ease), color .22s var(--ease);
}
.anchor-link:hover{ background:var(--paper-2); border-color:var(--ink-3); color:var(--ink); }
.anchor-link.is-active{ background:var(--ink); border-color:var(--ink); color:var(--paper); }

/* ---------- sections ---------- */
.sec{ padding:56px 0; }
@media (min-width:768px){ .sec{ padding:80px 0; } }
@media (min-width:1024px){ .sec{ padding:96px 0; } }
.sec--line{ border-top:1px solid var(--line); }
.sec--tight{ padding:40px 0; }
@media (min-width:768px){ .sec--tight{ padding:56px 0; } }
.sec-head{ display:flex; flex-wrap:wrap; align-items:flex-end; justify-content:space-between; gap:18px; margin-bottom:34px; }
h2{ font-size:clamp(24px,3vw,36px); line-height:1.2; font-weight:700; letter-spacing:-.01em; margin-top:14px; }
.sec-desc{ color:var(--ink-3); font-size:15px; max-width:52ch; margin-top:12px; }
h3{ font-size:19px; font-weight:600; line-height:1.45; }

/* ---------- safety cards ---------- */
.tip-grid{ display:grid; grid-template-columns:1fr; gap:18px; }
@media (min-width:768px){ .tip-grid{ grid-template-columns:repeat(2,1fr); } }
@media (min-width:1024px){ .tip-grid{ grid-template-columns:repeat(3,1fr); } }
.tip-card{
  border:1px solid var(--line); border-radius:var(--r-md); background:var(--paper);
  padding:18px; display:flex; flex-direction:column; gap:14px;
  transition:box-shadow .28s var(--ease), transform .28s var(--ease), border-color .28s var(--ease);
}
.tip-card:hover{ box-shadow:var(--sh-2); transform:translateY(-3px); border-color:var(--ink-3); }
.tip-media{ border-radius:var(--r-sm); overflow:hidden; background:var(--paper-2); border:1px solid var(--line); }
.tip-media img{ width:100%; aspect-ratio:16/10; object-fit:cover; transition:transform .28s var(--ease); }
.tip-card:hover .tip-media img{ transform:scale(1.03); }
.tip-no{ font-size:12px; font-weight:700; letter-spacing:.1em; color:var(--primary-deep); }
.tip-card p{ font-size:14px; color:var(--ink-3); margin-top:8px; }

/* ---------- checklist ---------- */
.check-wrap{ display:grid; grid-template-columns:1fr; gap:28px; }
@media (min-width:1024px){ .check-wrap{ grid-template-columns:4fr 8fr; gap:48px; } }
.check-list{ border-top:1px solid var(--line); }
.check-item{ display:flex; gap:16px; padding:20px 4px; border-bottom:1px solid var(--line); }
.check-item .idx{
  font-size:12px; font-weight:800; color:var(--primary-deep); letter-spacing:.08em;
  padding-top:4px; min-width:28px; font-variant-numeric:tabular-nums;
}
.check-item p{ font-size:16px; }
.check-note{
  border:1px dashed var(--line); border-radius:var(--r-md); padding:18px 20px; background:var(--paper-2);
  font-size:13px; color:var(--ink-2); line-height:1.8;
}
.stamp{
  display:inline-block; border:1px dashed var(--ink-3); border-radius:var(--r-sm);
  padding:4px 12px; font-size:12px; letter-spacing:.14em; color:var(--ink-2);
  transform:rotate(-1.6deg); background:var(--paper);
}

/* ---------- FAQ ---------- */
.faq-columns{ display:grid; grid-template-columns:1fr; gap:0 48px; border-top:1px solid var(--line); }
@media (min-width:1024px){ .faq-columns{ grid-template-columns:1fr 1fr; } }
.faq-item{ border-bottom:1px solid var(--line); }
.faq-q{
  width:100%; display:flex; align-items:flex-start; justify-content:space-between; gap:18px;
  padding:20px 4px; text-align:left; font-size:17px; font-weight:600; line-height:1.5;
  color:var(--ink); transition:color .22s var(--ease), background .22s var(--ease);
}
.faq-q:hover{ color:var(--primary-deep); background:var(--paper-2); }
.faq-icon{ position:relative; width:20px; height:20px; flex:0 0 20px; margin-top:4px; transition:transform .28s var(--ease); }
.faq-icon::before,.faq-icon::after{
  content:""; position:absolute; left:50%; top:50%; background:var(--ink); transform:translate(-50%,-50%);
}
.faq-icon::before{ width:14px; height:1.6px; }
.faq-icon::after{ width:1.6px; height:14px; }
.faq-item.open .faq-icon{ transform:rotate(45deg); }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .32s var(--ease); }
.faq-item.open .faq-a{ max-height:420px; }
.faq-a-inner{ padding:0 4px 22px; max-width:680px; }
.faq-a-inner p{ font-size:15px; color:var(--ink-2); }

/* ---------- process ---------- */
.process-grid{ display:grid; grid-template-columns:1fr; gap:18px; }
@media (min-width:640px){ .process-grid{ grid-template-columns:repeat(2,1fr); } }
@media (min-width:1024px){ .process-grid{ grid-template-columns:repeat(4,1fr); } }
.process-card{
  position:relative; border:1px solid var(--line); border-radius:var(--r-md);
  padding:22px 20px; background:var(--paper);
  transition:border-color .26s var(--ease), transform .26s var(--ease);
}
.process-card:hover{ border-color:var(--primary-deep); transform:translateY(-3px); }
.process-card::before{
  content:""; position:absolute; left:0; top:20px; bottom:20px; width:3px; background:var(--line); border-radius:999px;
  transition:background .26s var(--ease);
}
.process-card:hover::before{ background:var(--primary); }
.process-no{ font-size:12px; font-weight:800; letter-spacing:.1em; color:var(--primary-deep); }
.process-card h3{ font-size:17px; margin-top:10px; }
.process-card p{ font-size:14px; color:var(--ink-3); margin-top:8px; }

/* ---------- CTA ---------- */
.cta-band{ background:var(--ink); color:var(--paper); }
.cta-inner{ display:flex; flex-direction:column; gap:22px; align-items:flex-start; padding:52px 0; }
@media (min-width:1024px){ .cta-inner{ flex-direction:row; align-items:center; justify-content:space-between; padding:64px 0; } }
.cta-band h2{ color:var(--paper); margin-top:0; }
.cta-band .sec-desc{ color:rgba(251,250,246,.66); margin-top:10px; }
.cta-band .btn-primary{ background:var(--primary); color:var(--ink); }
.cta-band .btn-primary:hover{ background:var(--paper); color:var(--ink); }

/* ---------- privacy strip ---------- */
.privacy{ background:var(--paper-2); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.privacy-grid{ display:grid; grid-template-columns:1fr; gap:16px; padding:28px 0; }
@media (min-width:768px){ .privacy-grid{ grid-template-columns:repeat(3,1fr); gap:28px; } }
.privacy-item{ font-size:13px; line-height:1.8; color:var(--ink-2); }
.privacy-item strong{ display:block; font-size:13px; color:var(--ink); margin-bottom:4px; }

/* ---------- footer ---------- */
.site-footer{ background:var(--paper); border-top:1px solid var(--line); padding-top:52px; }
.footer-grid{ display:grid; grid-template-columns:1fr; gap:34px; padding-bottom:40px; }
@media (min-width:640px){ .footer-grid{ grid-template-columns:repeat(2,1fr); } }
@media (min-width:1024px){ .footer-grid{ grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; } }
.footer-title{ font-size:12px; font-weight:700; letter-spacing:.12em; color:var(--ink-3); margin-bottom:14px; }
.footer-links li{ margin-bottom:10px; }
.footer-links a{ font-size:14px; color:var(--ink-2); transition:color .2s var(--ease); }
.footer-links a:hover{ color:var(--primary-deep); text-decoration:underline; }
.footer-bottom{
  border-top:1px solid var(--line); padding:20px 0 28px;
  display:flex; flex-wrap:wrap; gap:10px; justify-content:space-between;
  font-size:13px; color:var(--ink-3);
}

/* ---------- float & top ---------- */
.float-pill{
  position:fixed; right:16px; bottom:16px; z-index:70;
  display:inline-flex; align-items:center; justify-content:center;
  height:48px; padding:0 22px; border-radius:999px;
  background:var(--ink); color:var(--paper); font-size:14px; font-weight:600;
  border:1px solid var(--ink); box-shadow:var(--sh-2);
  transition:background .24s var(--ease), color .24s var(--ease);
}
.float-pill:hover{ background:var(--primary); color:var(--ink); }
.to-top{
  position:fixed; right:16px; bottom:74px; z-index:70;
  width:42px; height:42px; border-radius:999px; border:1px solid var(--line);
  background:rgba(251,250,246,.94); backdrop-filter:blur(8px);
  display:inline-flex; align-items:center; justify-content:center;
  color:var(--ink); font-size:16px; transition:border-color .22s var(--ease), transform .22s var(--ease);
}
.to-top:hover{ border-color:var(--ink); transform:translateY(-3px); }
@media (min-width:1024px){
  .float-pill{ right:32px; bottom:32px; }
  .to-top{ right:32px; bottom:96px; }
}
@media (max-width:1023px){
  .float-pill{ left:0; right:0; bottom:0; height:54px; border-radius:0; box-shadow:0 -6px 18px -12px rgba(14,16,13,.4); }
  .to-top{ bottom:70px; }
  body{ padding-bottom:54px; }
}

/* ---------- modal ---------- */
.modal{ position:fixed; inset:0; z-index:90; display:none; }
.modal.open{ display:block; }
.modal-mask{
  position:absolute; inset:0; background:rgba(14,16,13,.62);
  backdrop-filter:blur(6px); -webkit-backdrop-filter:blur(6px);
}
.modal-panel{
  position:absolute; left:50%; bottom:0; transform:translateX(-50%);
  width:100%; max-width:480px; background:#fff; border-radius:var(--r-lg) var(--r-lg) 0 0;
  padding:28px 24px 26px; box-shadow:var(--sh-2); max-height:92vh; overflow-y:auto;
}
@media (min-width:768px){
  .modal-panel{ top:50%; bottom:auto; transform:translate(-50%,-50%); border-radius:var(--r-lg); padding:32px; }
}
.modal-close{
  position:absolute; right:14px; top:12px; width:32px; height:32px; border-radius:999px;
  display:inline-flex; align-items:center; justify-content:center; font-size:20px; color:var(--ink-3);
  transition:background .2s var(--ease), color .2s var(--ease);
}
.modal-close:hover{ background:var(--paper-2); color:var(--ink); }
.modal-form{ margin-top:22px; display:flex; flex-direction:column; gap:14px; }
.field label{ display:block; font-size:13px; font-weight:600; margin-bottom:6px; color:var(--ink-2); }
.field input,.field select,.field textarea{
  width:100%; height:48px; border:1px solid var(--line); border-radius:10px;
  padding:0 14px; background:var(--paper); font-size:14px; transition:border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.field textarea{ height:auto; min-height:88px; padding:12px 14px; resize:vertical; line-height:1.7; }
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none; border-color:var(--primary-deep); box-shadow:0 0 0 4px rgba(78,122,31,.14);
}
.consent{ display:flex; gap:10px; align-items:flex-start; font-size:13px; color:var(--ink-2); line-height:1.6; }
.consent input{ width:16px; height:16px; margin-top:3px; accent-color:var(--primary-deep); }
.form-note{ font-size:13px; color:var(--ink-3); line-height:1.7; }
.form-ok{ display:none; font-size:13px; color:var(--primary-deep); }
.form-ok.show{ display:block; }

/* ---------- reveal ---------- */
.reveal{ opacity:0; transform:translateY(16px); transition:opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.is-visible{ opacity:1; transform:none; }
@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  .reveal{ opacity:1; transform:none; transition:none; }
  *{ transition:none !important; }
}