/* roulang page: index */
:root{
  --ink:#13231D;
  --ink-2:#244037;
  --paper:#F7F3EC;
  --paper-2:#EDE7DC;
  --white:#FFFFFF;
  --copper:#B86B3F;
  --copper-deep:#8F4A28;
  --mint:#DCE8E1;
  --line:#E1DACD;
  --muted:#68736D;
  --ok:#2E7D5B;
  --warn:#B07A22;
  --r-sm:10px;
  --r-md:12px;
  --r-lg:16px;
  --sh-1:0 1px 2px rgba(19,35,29,.04);
  --sh-2:0 18px 40px -26px rgba(19,35,29,.28);
  --ease:cubic-bezier(.2,.7,.2,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --nav-h:68px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--paper);
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--copper-deep);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{
  font-family:var(--serif);
  font-weight:700;
  letter-spacing:.015em;
  line-height:1.25;
  margin:0;
  color:var(--ink);
}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:2px solid var(--copper);outline-offset:3px;border-radius:4px;}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.narrow{max-width:760px;margin-left:auto;margin-right:auto;}
.section{padding:104px 0;}
.section--paper{background:var(--paper);}
.section--white{background:var(--white);}
.section--ink{background:var(--ink);color:var(--paper);}
.section--ink h2,.section--ink h3{color:var(--white);}
.sec-label{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.18em;color:var(--copper);
  text-transform:uppercase;margin-bottom:18px;font-weight:600;
}
.sec-label::before{content:"";width:26px;height:1px;background:var(--copper);display:inline-block;}
.sec-title{font-size:clamp(28px,3.2vw,40px);line-height:1.22;}
.sec-desc{margin-top:16px;font-size:16px;color:var(--muted);max-width:640px;}
.section--ink .sec-desc{color:rgba(247,243,236,.72);}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s var(--ease);
}
.site-header.is-stuck{box-shadow:0 6px 24px -18px rgba(19,35,29,.45);}
.nav-inner{
  height:var(--nav-h);
  display:flex;align-items:center;gap:28px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:28px;height:28px;border-radius:8px;
  display:grid;place-items:center;
  background:var(--paper);
  border:1px solid var(--line);
}
.brand-mark svg{width:16px;height:16px;stroke:var(--copper);fill:none;stroke-width:1.5;}
.brand-text{
  font-size:15px;font-weight:700;color:var(--ink);letter-spacing:.02em;white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:22px;margin-left:8px;}
.nav-link-x{
  position:relative;font-size:15px;color:rgba(19,35,29,.72);
  padding:6px 0;white-space:nowrap;transition:color .22s var(--ease);
}
.nav-link-x::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;
  background:var(--copper);transition:width .22s var(--ease);
}
.nav-link-x:hover{color:var(--ink);}
.nav-link-x:hover::after{width:100%;}
.nav-link-x.active{color:var(--ink-2);font-weight:600;}
.nav-link-x.active::after{width:100%;}
.nav-right{display:flex;align-items:center;gap:14px;margin-left:auto;}
.search-form{position:relative;}
.search-form input{
  width:200px;height:38px;border-radius:999px;border:0;
  background:var(--paper);padding:0 16px;font-size:14px;
  transition:background .22s var(--ease),box-shadow .22s var(--ease);
}
.search-form input::placeholder{color:rgba(104,115,109,.85);}
.search-form input:focus{
  outline:none;background:var(--white);
  box-shadow:0 0 0 3px rgba(184,107,63,.22);
}
.search-form button{
  position:absolute;right:6px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;border:0;background:transparent;display:grid;place-items:center;
}
.search-form button svg{width:15px;height:15px;stroke:var(--muted);fill:none;stroke-width:1.8;}
.btn-nav{
  height:38px;padding:0 18px;border-radius:999px;border:0;
  background:var(--ink);color:var(--paper);font-size:14px;font-weight:600;
  display:inline-flex;align-items:center;gap:6px;white-space:nowrap;
  transition:background .22s var(--ease),transform .22s var(--ease);
}
.btn-nav:hover{background:var(--copper-deep);color:#fff;transform:translateY(-1px);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:var(--white);place-items:center;
}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink);fill:none;stroke-width:1.6;}
/* offcanvas */
.offcanvas{background:var(--paper);}
.offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.offcanvas-body{padding:20px;}
.drawer-links{display:flex;flex-direction:column;gap:2px;margin-bottom:22px;}
.drawer-links a{
  padding:13px 4px;font-size:16px;border-bottom:1px solid var(--line);
  display:flex;justify-content:space-between;align-items:center;color:var(--ink);
}
.drawer-links a span{font-size:12px;color:var(--copper);letter-spacing:.1em;}
.drawer-cta{
  display:block;text-align:center;background:var(--ink);color:var(--paper);
  border-radius:999px;padding:13px;font-weight:600;margin-top:18px;
}

/* ---------- buttons ---------- */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:transform .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn-x svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8;transition:transform .22s var(--ease);}
.btn-solid{background:var(--copper-deep);color:#fff;}
.btn-solid:hover{background:#7A3E21;color:#fff;transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:rgba(19,35,29,.22);color:var(--ink);}
.btn-ghost:hover{background:rgba(19,35,29,.05);color:var(--ink);border-color:rgba(19,35,29,.4);}
.btn-ghost-light{background:transparent;border-color:rgba(247,243,236,.34);color:var(--paper);}
.btn-ghost-light:hover{background:rgba(247,243,236,.1);color:#fff;border-color:rgba(247,243,236,.6);}
.btn-solid:hover svg,.link-arrow:hover svg{transform:translateX(4px);}
.link-arrow{
  display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:var(--copper-deep);
}
.link-arrow svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:1.8;transition:transform .22s var(--ease);}

/* ---------- hero ---------- */
.hero{
  position:relative;background:var(--ink);color:var(--paper);overflow:hidden;
  background-image:linear-gradient(100deg,rgba(19,35,29,.94) 0%,rgba(19,35,29,.86) 45%,rgba(19,35,29,.62) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(247,243,236,.06) 1px,transparent 1px);
  background-size:22px 22px;opacity:.6;
}
.hero-inner{position:relative;z-index:2;padding:96px 0 88px;}
.hero-tag{
  display:inline-flex;align-items:center;gap:9px;
  border:1px solid rgba(247,243,236,.28);border-radius:999px;
  padding:6px 14px;font-size:12.5px;letter-spacing:.08em;color:rgba(247,243,236,.86);
  margin-bottom:26px;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--copper);display:block;}
.hero h1{
  color:var(--white);
  font-size:clamp(38px,5.6vw,68px);
  line-height:1.12;
  font-weight:700;
  margin-bottom:22px;
}
.hero-sub{
  font-size:18px;line-height:1.75;color:rgba(247,243,236,.8);
  max-width:540px;margin-bottom:32px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;}
.hero-note{
  margin-top:34px;font-size:13px;color:rgba(247,243,236,.55);
  display:flex;align-items:center;gap:10px;
}
.hero-note span{width:24px;height:1px;background:rgba(247,243,236,.4);display:inline-block;}

.check-card{
  background:rgba(247,243,236,.97);
  border-radius:var(--r-lg);
  padding:30px 28px;
  box-shadow:var(--sh-2);
  color:var(--ink);
}
.check-card h2{
  font-size:19px;margin-bottom:6px;
}
.check-card .cc-sub{font-size:13px;color:var(--muted);margin-bottom:20px;}
.check-row{
  display:flex;gap:14px;padding:15px 0;border-top:1px solid var(--line);
}
.check-row:first-of-type{border-top:0;padding-top:0;}
.check-num{
  font-family:var(--serif);font-size:20px;color:var(--copper);line-height:1.3;font-weight:700;
  min-width:28px;
}
.check-row p{font-size:14px;line-height:1.7;color:var(--muted);}
.check-row strong{display:block;font-size:15px;color:var(--ink);margin-bottom:2px;font-weight:600;}

.stats-bar{
  position:relative;z-index:2;
  border-top:1px solid rgba(247,243,236,.16);
  display:grid;grid-template-columns:repeat(3,1fr);
}
.stat{padding:26px 0;border-left:1px solid rgba(247,243,236,.16);}
.stat:first-child{border-left:0;}
.stat-inner{padding:0 26px;}
.stat:first-child .stat-inner{padding-left:0;}
.stat b{
  display:block;font-family:var(--serif);font-size:36px;line-height:1.1;
  color:var(--white);font-variant-numeric:tabular-nums;font-weight:700;
}
.stat span{display:block;font-size:13px;color:rgba(247,243,236,.62);margin-top:6px;}

/* ---------- value ---------- */
.value-grid{display:grid;grid-template-columns:5fr 7fr;gap:64px;}
.value-side{position:sticky;top:calc(var(--nav-h) + 32px);align-self:start;}
.value-side .rule{width:1px;height:64px;background:var(--copper);margin-top:28px;}
.value-list{border-top:1px solid var(--line);}
.value-item{
  display:grid;grid-template-columns:64px 1fr;gap:22px;
  padding:30px 18px 30px 0;border-bottom:1px solid var(--line);
  transition:background .22s var(--ease),padding-left .22s var(--ease);
}
.value-item:hover{background:rgba(255,255,255,.72);padding-left:12px;}
.value-item .idx{
  font-family:var(--serif);font-size:30px;color:var(--copper);line-height:1;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.value-item h3{font-size:20px;margin-bottom:8px;}
.value-item p{font-size:15px;color:var(--muted);line-height:1.85;max-width:560px;}

/* ---------- demo ---------- */
.demo-steps{
  display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:52px;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.demo-step{padding:30px 28px 30px 0;position:relative;}
.demo-step + .demo-step{padding-left:28px;}
.demo-step + .demo-step::before{
  content:"";position:absolute;left:0;top:30px;bottom:30px;
  border-left:1px dashed var(--line);
}
.demo-step .num{
  font-family:var(--serif);font-size:44px;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(184,107,63,.75);
  display:block;margin-bottom:14px;font-variant-numeric:tabular-nums;
}
.demo-step h3{font-size:18px;margin-bottom:8px;}
.demo-step p{font-size:14px;color:var(--muted);}
.demo-media{
  position:relative;margin-top:44px;border-radius:var(--r-lg);
  overflow:hidden;border:1px solid var(--line);background:var(--paper-2);
  aspect-ratio:16/9;
}
.demo-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.demo-media:hover img{transform:scale(1.02);}
.demo-media figcaption{
  position:absolute;left:20px;bottom:20px;display:flex;flex-wrap:wrap;gap:8px;
}
.chip{
  background:rgba(19,35,29,.86);color:var(--paper);font-size:12px;
  padding:6px 12px;border-radius:999px;backdrop-filter:blur(4px);
}

/* ---------- proof ---------- */
.proof-grid{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:start;}
.proof-matrix{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:rgba(247,243,236,.18);}
.proof-cell{background:var(--ink);padding:34px 28px;}
.proof-cell b{
  display:block;font-family:var(--serif);font-size:clamp(38px,4vw,52px);line-height:1.05;
  color:var(--white);font-variant-numeric:tabular-nums;font-weight:700;
}
.proof-cell span{display:block;font-size:13px;color:rgba(247,243,236,.6);margin-top:10px;}
.proof-foot{margin-top:22px;font-size:12.5px;color:rgba(247,243,236,.5);}

/* ---------- price ---------- */
.price-list{border-top:1px solid var(--line);margin-top:52px;}
.price-row{
  display:grid;grid-template-columns:4fr 5fr 3fr;gap:28px;align-items:center;
  padding:28px 24px;border-bottom:1px solid var(--line);
  background:transparent;transition:background .22s var(--ease),border-color .22s var(--ease);
}
.price-row:hover{background:rgba(255,255,255,.7);}
.price-row.featured{
  background:var(--white);border-left:4px solid var(--copper);border-radius:var(--r-sm);
  box-shadow:var(--sh-1);
}
.price-name{font-family:var(--serif);font-size:21px;font-weight:700;margin-bottom:6px;}
.price-desc{font-size:14px;color:var(--muted);line-height:1.7;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  font-size:12.5px;color:var(--ink-2);background:var(--mint);
  border-radius:999px;padding:5px 12px;white-space:nowrap;
}
.price-end{display:flex;align-items:center;justify-content:flex-end;gap:18px;}
.price-val{font-family:var(--serif);font-size:19px;color:var(--copper-deep);white-space:nowrap;}
.price-val small{display:block;font-family:var(--sans);font-size:12px;color:var(--muted);font-weight:400;}

/* ---------- news ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.news-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-sm);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.news-card:hover{transform:translateY(-3px);border-color:rgba(184,107,63,.5);box-shadow:var(--sh-2);}
.news-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--paper-2);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.02);}
.news-body{padding:22px 22px 20px;display:flex;flex-direction:column;flex:1;}
.news-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:12px;}
.badge-x{
  font-size:12px;color:var(--copper-deep);background:rgba(220,232,225,.85);
  border-radius:999px;padding:3px 11px;white-space:nowrap;
}
.news-date{font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums;}
.news-title{
  font-size:17.5px;line-height:1.55;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-excerpt{
  font-size:14px;color:var(--muted);line-height:1.75;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body .link-arrow{margin-top:auto;}
.empty-state{
  grid-column:1/-1;border:1px dashed var(--line);border-radius:var(--r-md);
  padding:48px 24px;text-align:center;background:rgba(255,255,255,.6);
}
.empty-state svg{width:32px;height:32px;stroke:var(--copper);fill:none;stroke-width:1.4;margin-bottom:14px;}
.empty-state p{font-size:14.5px;color:var(--muted);margin-bottom:6px;}
.empty-state a{font-size:14px;font-weight:600;color:var(--copper-deep);}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:5fr 7fr;gap:64px;}
.faq-side{position:sticky;top:calc(var(--nav-h) + 32px);align-self:start;}
.faq-side .btn-x{margin-top:24px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:transparent;border:0;text-align:left;padding:20px 0;
  font-size:17px;font-weight:600;color:var(--ink);font-family:var(--sans);
  transition:color .22s var(--ease);
}
.faq-btn:hover{color:var(--copper-deep);}
.faq-btn .pm{
  flex-shrink:0;width:20px;height:20px;position:relative;
  transition:transform .28s var(--ease);
}
.faq-btn .pm::before,.faq-btn .pm::after{
  content:"";position:absolute;background:var(--copper);border-radius:2px;
}
.faq-btn .pm::before{left:0;top:9px;width:20px;height:2px;}
.faq-btn .pm::after{left:9px;top:0;width:2px;height:20px;}
.faq-btn[aria-expanded="true"] .pm{transform:rotate(45deg);}
.faq-answer{font-size:15.5px;color:var(--muted);line-height:1.85;max-width:720px;padding-bottom:22px;}

/* ---------- cta band ---------- */
.cta-band{background:var(--ink-2);color:var(--paper);padding:34px 0;}
.cta-band .inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-band .line{
  font-family:var(--serif);font-size:clamp(20px,2.2vw,26px);color:#fff;font-weight:700;line-height:1.4;
}
.cta-band .line small{display:block;font-family:var(--sans);font-size:13.5px;font-weight:400;color:rgba(247,243,236,.6);margin-top:6px;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:var(--paper);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:52px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand .brand-mark{background:rgba(247,243,236,.08);border-color:rgba(247,243,236,.18);}
.footer-brand .brand-text{color:#fff;}
.footer-about{font-size:14px;color:rgba(247,243,236,.62);line-height:1.85;max-width:330px;}
.footer-col h4{
  font-size:14px;color:#fff;margin-bottom:18px;letter-spacing:.06em;font-weight:600;
  font-family:var(--sans);
}
.footer-col li{margin-bottom:11px;}
.footer-col a,.footer-col p{font-size:14px;color:rgba(247,243,236,.62);}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-bottom{
  border-top:1px solid rgba(247,243,236,.14);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:22px 0 26px;font-size:13px;color:rgba(247,243,236,.5);
}
.to-top{
  display:inline-flex;align-items:center;gap:8px;color:rgba(247,243,236,.7);font-size:13px;
  background:transparent;border:0;padding:6px 0;
}
.to-top:hover{color:#fff;}
.to-top svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:1.8;}

/* ---------- float cta ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:1040;
  display:inline-flex;align-items:center;gap:9px;
  background:var(--ink);color:var(--paper);
  border-radius:999px;padding:14px 22px;font-size:14.5px;font-weight:600;
  box-shadow:0 18px 40px -22px rgba(19,35,29,.7);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .3s var(--ease),transform .3s var(--ease),background .22s var(--ease);
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{background:var(--copper-deep);color:#fff;}
.float-cta svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8;}
.float-mobile{display:none;}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .nav-links{gap:16px;}
  .nav-link-x{font-size:14px;}
  .search-form input{width:160px;}
  .value-grid,.proof-grid,.faq-grid{gap:44px;}
}
@media (max-width:991.98px){
  :root{--nav-h:60px;}
  .nav-links,.nav-right .search-form,.nav-right .btn-nav{display:none;}
  .nav-toggle{display:grid;margin-left:auto;}
  .hero-inner{padding:64px 0 56px;}
  .hero h1{font-size:44px;}
  .hero-sub{font-size:16.5px;}
  .check-card{margin-top:34px;}
  .stats-bar{grid-template-columns:1fr;}
  .stat{border-left:0;border-top:1px solid rgba(247,243,236,.16);padding:20px 0;}
  .stat:first-child{border-top:0;}
  .stat-inner,.stat:first-child .stat-inner{padding:0;}
  .section{padding:80px 0;}
  .value-grid,.proof-grid,.faq-grid{grid-template-columns:1fr;gap:36px;}
  .value-side,.faq-side{position:static;}
  .value-side .rule{display:none;}
  .demo-steps{grid-template-columns:1fr;}
  .demo-step{padding:26px 0;}
  .demo-step + .demo-step{padding-left:0;border-top:1px dashed var(--line);}
  .demo-step + .demo-step::before{display:none;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .price-row{grid-template-columns:1fr;gap:16px;padding:24px 20px;}
  .price-end{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .proof-cell{padding:26px 22px;}
}
@media (max-width:767.98px){
  .section{padding:56px 0;}
  .container-x{padding:0 18px;}
  body{padding-bottom:72px;}
  .news-grid{grid-template-columns:1fr;}
  .demo-media{aspect-ratio:16/10;}
  .float-cta{display:none;}
  .float-mobile{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:1040;gap:10px;
    padding:10px 14px calc(10px + env(safe-area-inset-bottom));
    background:rgba(247,243,236,.96);border-top:1px solid var(--line);
    backdrop-filter:blur(8px);
  }
  .float-mobile .btn-x{flex:1;height:44px;font-size:15px;}
  .news-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .site-footer{padding-top:56px;}
}
@media (max-width:575.98px){
  .hero h1{font-size:32px;}
  .hero-cta .btn-x{width:100%;}
  .check-card{padding:24px 20px;}
  .sec-title{font-size:26px;}
  .proof-matrix{grid-template-columns:1fr;}
  .stat b{font-size:30px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}
@media print{
  .float-cta,.float-mobile,.site-header{display:none !important;}
}

/* roulang page: article */
:root{
  --ink:#13231D;
  --ink-2:#244037;
  --paper:#F7F3EC;
  --paper-2:#EDE7DC;
  --white:#FFFFFF;
  --copper:#B86B3F;
  --copper-deep:#8F4A28;
  --mint:#DCE8E1;
  --line:#E1DACD;
  --muted:#68736D;
  --warn:#B07A22;
  --radius:10px;
  --radius-lg:16px;
  --shadow-1:0 1px 2px rgba(19,35,29,.04);
  --shadow-2:0 18px 40px -26px rgba(19,35,29,.28);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --bs-body-font-family:var(--font-sans);
  --bs-body-color:var(--ink);
  --bs-body-bg:var(--paper);
  --bs-link-color:var(--copper-deep);
  --bs-link-hover-color:var(--copper);
  --bs-border-color:var(--line);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--paper);
  letter-spacing:.01em;
  padding-bottom:0;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--copper-deep);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--copper);}
h1,h2,h3,h4,h5{font-family:var(--font-serif);color:var(--ink);letter-spacing:.015em;margin:0;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;border:none;background:none;cursor:pointer;color:inherit;}
input{font-family:inherit;}
:focus-visible{outline:2px solid var(--copper);outline-offset:2px;}
.container-x{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease);
}
.site-header.scrolled{box-shadow:0 10px 26px -22px rgba(19,35,29,.6);}
.nav-wrap{display:flex;align-items:center;gap:28px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:30px;height:30px;display:grid;place-items:center;flex:none;
  border:1px solid rgba(184,107,63,.45);border-radius:8px;background:var(--paper);
}
.brand-mark svg{width:18px;height:18px;fill:none;stroke:var(--copper);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.brand-text{font-family:var(--font-serif);font-size:15px;font-weight:700;color:var(--ink);white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px;flex:1 1 auto;}
.nav-link-x{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;color:rgba(19,35,29,.72);white-space:nowrap;
  transition:color .22s var(--ease);
}
.nav-link-x::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--copper);transition:width .22s var(--ease);
}
.nav-link-x:hover{color:var(--ink);}
.nav-link-x:hover::after{width:100%;}
.nav-link-x.active{color:var(--ink-2);font-weight:600;}
.nav-link-x.active::after{width:100%;}
.nav-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.search-form{position:relative;}
.search-form input{
  width:200px;height:38px;padding:0 16px;
  font-size:14px;color:var(--ink);
  background:var(--paper);border:1px solid transparent;border-radius:999px;
  transition:all .22s var(--ease);
}
.search-form input::placeholder{color:var(--muted);}
.search-form input:focus{
  outline:none;background:var(--white);border-color:var(--copper);
  box-shadow:0 0 0 3px rgba(184,107,63,.16);
}
.btn-nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 20px;border-radius:999px;
  font-size:14px;font-weight:600;color:var(--white);background:var(--ink);
  transition:all .22s var(--ease);white-space:nowrap;
}
.btn-nav-cta:hover{background:var(--copper-deep);color:var(--white);transform:translateY(-1px);}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);
  border-radius:10px;align-items:center;justify-content:center;flex:none;
}
.nav-toggle svg{width:20px;height:20px;fill:none;stroke:var(--ink);stroke-width:1.6;stroke-linecap:round;}
.nav-mask{
  display:none;position:fixed;inset:0;background:rgba(19,35,29,.42);
  z-index:1040;opacity:0;transition:opacity .24s var(--ease);
}
.nav-mask.is-open{display:block;opacity:1;}

/* ---------- article hero ---------- */
.article-hero{
  background:var(--paper);
  border-bottom:1px solid var(--line);
  padding:36px 0 44px;
}
.breadcrumb-x{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:12px;color:var(--muted);letter-spacing:.02em;
}
.breadcrumb-x a{color:var(--muted);}
.breadcrumb-x a:hover{color:var(--copper-deep);}
.breadcrumb-x .sep{color:rgba(19,35,29,.25);}
.article-head{max-width:880px;margin:24px auto 0;}
.badge-cat{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;background:var(--mint);color:var(--ink-2);
  font-size:12px;font-weight:600;letter-spacing:.04em;
}
.article-head h1{
  margin:18px 0 0;
  font-size:clamp(30px,3.6vw,44px);
  font-weight:700;line-height:1.28;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  margin-top:20px;font-size:13px;color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:rgba(19,35,29,.25);}
.article-lead{
  margin-top:22px;padding-top:22px;border-top:1px solid var(--line);
  font-size:16px;line-height:1.85;color:var(--ink-2);
  max-width:760px;
}

/* ---------- article layout ---------- */
.article-section{padding:56px 0 72px;background:var(--white);}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,780px) 200px;
  gap:56px;justify-content:center;align-items:start;
}
.article-layout.no-toc{grid-template-columns:minmax(0,780px);}

.article-body{
  font-size:17.5px;line-height:1.9;color:#22312B;
  max-width:780px;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.4em;max-width:760px;}
.article-body h2{
  position:relative;
  margin:2.1em 0 .8em;
  padding-left:16px;
  font-size:clamp(22px,2.4vw,26px);
  font-weight:700;line-height:1.5;
  scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.32em;bottom:.32em;width:3px;
  background:var(--copper);border-radius:2px;
}
.article-body h3{
  margin:1.7em 0 .65em;
  font-size:20px;font-weight:600;line-height:1.55;
  color:var(--ink-2);scroll-margin-top:96px;
}
.article-body h4{margin:1.4em 0 .5em;font-size:17px;font-weight:600;}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:0;max-width:760px;}
.article-body ul li,.article-body ol li{
  position:relative;padding-left:22px;margin-bottom:.55em;line-height:1.8;
}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.75em;
  width:7px;height:7px;background:var(--copper);border-radius:2px;
}
.article-body ol{counter-reset:li;}
.article-body ol li{counter-increment:li;}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:0;
  font-family:var(--font-serif);font-size:15px;font-weight:700;color:var(--copper);
  width:18px;text-align:left;
}
.article-body blockquote{
  margin:1.6em 0;padding:20px 24px;
  background:var(--paper);border-left:3px solid var(--copper);
  border-radius:0 var(--radius) var(--radius) 0;
  font-size:16.5px;color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body a{color:var(--copper-deep);border-bottom:1px solid rgba(143,74,40,.3);}
.article-body a:hover{border-bottom-color:var(--copper);}
.article-body img{border-radius:var(--radius-lg);margin:1.6em 0;width:100%;}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{
  margin-top:10px;text-align:center;font-size:12px;color:var(--muted);
}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:14.5px;
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
}
.article-body thead th{
  background:var(--mint);color:var(--ink-2);
  font-size:13.5px;font-weight:600;text-align:left;
}
.article-body th,.article-body td{
  padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top;
}
.article-body tbody tr:last-child td{border-bottom:none;}
.article-body tbody tr:hover{background:var(--paper);}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2em 0;}
.article-body code{
  padding:2px 6px;background:var(--paper-2);border-radius:4px;
  font-size:.9em;color:var(--copper-deep);
}
.article-empty{
  border:1px dashed var(--line);border-radius:12px;
  padding:56px 32px;text-align:center;background:var(--paper);
}
.article-empty svg{
  width:34px;height:34px;fill:none;stroke:var(--copper);stroke-width:1.4;
  stroke-linecap:round;stroke-linejoin:round;margin:0 auto 16px;
}
.article-empty h2{font-size:20px;margin-bottom:10px;}
.article-empty p{color:var(--muted);font-size:14.5px;margin-bottom:20px;}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  height:44px;padding:0 22px;border-radius:999px;
  font-size:14.5px;font-weight:600;color:var(--ink);
  border:1px solid rgba(19,35,29,.2);background:transparent;
  transition:all .22s var(--ease);
}
.btn-ghost:hover{background:rgba(19,35,29,.05);color:var(--ink);}
.btn-solid{
  display:inline-flex;align-items:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:600;color:var(--white);background:var(--copper-deep);
  transition:all .22s var(--ease);
}
.btn-solid:hover{background:#7a3d1f;color:var(--white);transform:translateY(-1px);}
.btn-solid svg,.btn-ghost svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}

/* ---------- toc ---------- */
.toc-col{position:sticky;top:96px;font-size:13px;}
.toc-title{
  font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--muted);
  padding-bottom:10px;border-bottom:1px solid var(--line);margin-bottom:12px;
}
.toc-list li{margin-bottom:9px;}
.toc-list a{
  display:block;padding-left:12px;border-left:2px solid transparent;
  color:var(--muted);line-height:1.55;transition:all .2s var(--ease);
}
.toc-list a:hover{color:var(--ink);border-left-color:rgba(184,107,63,.4);}
.toc-list a.is-active{color:var(--copper-deep);border-left-color:var(--copper);font-weight:600;}

/* ---------- article footer bits ---------- */
.article-foot{
  max-width:780px;margin:44px auto 0;padding-top:28px;border-top:1px solid var(--line);
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.tag-row .label{font-size:13px;color:var(--muted);margin-right:2px;}
.tag-x{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;
  border-radius:999px;border:1px solid var(--line);background:var(--paper);
  font-size:13px;color:var(--ink-2);transition:all .22s var(--ease);
}
.tag-x:hover{border-color:rgba(184,107,63,.5);color:var(--copper-deep);background:var(--white);}
.foot-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}

/* ---------- related ---------- */
.related-section{padding:0 0 88px;background:var(--white);}
.related-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:16px;padding-top:8px;margin-bottom:26px;
}
.related-head h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--copper-deep);
}
.link-arrow svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .22s var(--ease);}
.link-arrow:hover svg{transform:translateX(4px);}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;}
.post-card{
  display:flex;flex-direction:column;
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:all .24s var(--ease);height:100%;
}
.post-card:hover{transform:translateY(-3px);border-color:rgba(184,107,63,.45);box-shadow:var(--shadow-2);}
.post-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--paper-2);}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.post-card:hover .thumb img{transform:scale(1.02);}
.post-card .body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-card .meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums;}
.post-card .meta .chip{
  display:inline-flex;height:22px;padding:0 10px;align-items:center;
  border-radius:999px;background:var(--mint);color:var(--ink-2);font-weight:600;
}
.post-card h3{font-size:18px;font-weight:600;line-height:1.5;}
.post-card p{font-size:14px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card .more{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  font-size:13.5px;font-weight:600;color:var(--copper-deep);
}
.post-card .more svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .22s var(--ease);}
.post-card:hover .more svg{transform:translateX(4px);}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--ink);color:var(--paper);
  padding:44px 0;
}
.cta-band .inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
}
.cta-band h2{
  color:var(--white);font-size:clamp(20px,2.2vw,26px);font-weight:700;
}
.cta-band p{margin-top:8px;font-size:14px;color:rgba(247,243,236,.66);}
.cta-band .btn-solid{background:var(--copper);}
.cta-band .btn-outline-light-x{
  display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 24px;
  border-radius:999px;border:1px solid rgba(247,243,236,.32);
  color:var(--paper);font-size:15px;font-weight:600;transition:all .22s var(--ease);
}
.cta-band .btn-outline-light-x:hover{border-color:var(--paper);color:var(--white);background:rgba(247,243,236,.08);}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(247,243,236,.72);padding:64px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:44px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.site-footer .brand-mark{background:rgba(247,243,236,.06);border-color:rgba(184,107,63,.5);}
.site-footer .brand-text{color:var(--paper);font-size:15px;}
.footer-about{font-size:13.5px;line-height:1.85;color:rgba(247,243,236,.6);max-width:320px;}
.footer-col h4{
  font-family:var(--font-sans);font-size:13px;font-weight:700;
  letter-spacing:.12em;color:rgba(247,243,236,.5);margin-bottom:16px;
}
.footer-col ul li{margin-bottom:11px;}
.footer-col a{font-size:14px;color:rgba(247,243,236,.72);transition:all .2s var(--ease);}
.footer-col a:hover{color:var(--white);text-decoration:underline;text-underline-offset:4px;}
.footer-col p{font-size:13.5px;line-height:1.8;color:rgba(247,243,236,.58);}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  padding:22px 0 28px;border-top:1px solid rgba(247,243,236,.12);
  font-size:13px;color:rgba(247,243,236,.52);
}
.to-top{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:rgba(247,243,236,.72);transition:color .2s var(--ease);
}
.to-top svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.to-top:hover{color:var(--white);}

/* ---------- floating cta ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:1040;
  display:inline-flex;align-items:center;gap:8px;
  height:48px;padding:0 24px;border-radius:999px;
  background:var(--ink);color:var(--white);
  font-size:14.5px;font-weight:600;
  box-shadow:0 18px 34px -18px rgba(19,35,29,.6);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:all .26s var(--ease);
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{background:var(--copper-deep);color:var(--white);}
.float-cta svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .nav-links{gap:18px;}
  .nav-link-x{font-size:14px;}
  .search-form input{width:150px;}
  .article-layout{grid-template-columns:minmax(0,1fr) 190px;gap:40px;}
}
@media (max-width:991.98px){
  .nav-wrap{height:60px;gap:14px;}
  .nav-toggle{display:inline-flex;}
  .search-form{display:none;}
  .nav-links{
    position:fixed;top:0;right:0;height:100vh;width:78vw;max-width:320px;
    background:var(--white);flex-direction:column;align-items:flex-start;
    gap:4px;padding:80px 24px 32px;margin:0;
    transform:translateX(100%);transition:transform .28s var(--ease);
    z-index:1050;overflow-y:auto;
    box-shadow:-24px 0 60px -34px rgba(19,35,29,.55);
  }
  .nav-links.is-open{transform:translateX(0);}
  .nav-link-x{display:block;width:100%;padding:13px 0;font-size:16px;border-bottom:1px solid var(--line);}
  .nav-link-x::after{display:none;}
  .nav-link-x.active{color:var(--copper-deep);}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .toc-col{display:none;}
  .article-hero{padding:28px 0 34px;}
  .article-section{padding:44px 0 56px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  .container-x{padding-left:18px;padding-right:18px;}
  .article-head h1{font-size:30px;}
  .article-body{font-size:16.5px;}
  .related-section{padding-bottom:64px;}
  .cta-band .inner{flex-direction:column;align-items:flex-start;}
  body{padding-bottom:72px;}
  .float-cta{
    right:0;left:0;bottom:0;width:100%;height:auto;
    border-radius:0;justify-content:center;padding:12px 18px calc(12px + env(safe-area-inset-bottom));
    transform:translateY(100%);
  }
  .float-cta.is-visible{transform:translateY(0);opacity:1;}
}
@media (max-width:575.98px){
  .brand-text{font-size:13.5px;}
  .article-meta{font-size:12px;gap:8px 12px;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .article-empty{padding:40px 20px;}
  .btn-solid,.btn-ghost{width:100%;justify-content:center;}
}
@media print{
  .site-header,.float-cta,.cta-band,.related-section,.site-footer{display:none !important;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --ink:#13231D;
  --ink-soft:#244037;
  --paper:#F7F3EC;
  --paper-2:#EDE7DC;
  --white:#FFFFFF;
  --copper:#B86B3F;
  --copper-deep:#8F4A28;
  --mint:#DCE8E1;
  --line:#E1DACD;
  --muted:#68736D;
  --ok:#2E7D5B;
  --warn:#B07A22;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --r-card:10px;
  --r-media:14px;
  --sh-1:0 1px 2px rgba(19,35,29,.04);
  --sh-2:0 18px 40px -26px rgba(19,35,29,.28);
  --ease:cubic-bezier(.2,.7,.2,1);
  --nav-h:68px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--copper-deep)}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:700;letter-spacing:.015em;line-height:1.22}
button{font-family:inherit;cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--copper);outline-offset:3px;border-radius:4px}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s var(--ease);
}
.site-header.scrolled{box-shadow:0 6px 22px -18px rgba(19,35,29,.55)}
.nav-wrap{
  height:var(--nav-h);
  display:flex;align-items:center;gap:22px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:30px;height:30px;display:grid;place-items:center;
  border:1px solid var(--line);border-radius:8px;background:var(--paper);
}
.brand-mark svg{width:18px;height:18px;fill:none;stroke:var(--copper);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.brand-text{
  font-family:var(--serif);font-size:15px;font-weight:700;color:var(--ink);
  letter-spacing:.02em;white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1}
.nav-link-x{
  position:relative;
  font-size:15px;color:rgba(19,35,29,.72);
  padding:8px 12px;border-radius:8px;
  transition:color .22s var(--ease);
}
.nav-link-x::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--copper);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-link-x:hover{color:var(--ink)}
.nav-link-x:hover::after,.nav-link-x.active::after{transform:scaleX(1)}
.nav-link-x.active{color:var(--ink);font-weight:600}
.nav-tools{display:flex;align-items:center;gap:12px;flex-shrink:0}
.search-form{position:relative}
.search-input{
  width:200px;height:38px;
  background:var(--paper);border:1px solid transparent;border-radius:999px;
  padding:0 16px 0 36px;font-size:14px;color:var(--ink);
  transition:background .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.search-input::placeholder{color:var(--muted)}
.search-input:focus{outline:none;background:var(--white);border-color:var(--copper);box-shadow:0 0 0 3px rgba(184,107,63,.16)}
.search-icon{
  position:absolute;left:13px;top:50%;transform:translateY(-50%);
  width:15px;height:15px;fill:none;stroke:var(--muted);stroke-width:1.6;stroke-linecap:round;pointer-events:none;
}
.btn-cta{
  display:inline-flex;align-items:center;gap:8px;
  height:38px;padding:0 20px;border-radius:999px;
  background:var(--ink);color:#fff;font-size:14px;font-weight:600;
  transition:background .22s var(--ease),transform .22s var(--ease);
}
.btn-cta:hover{background:var(--copper-deep);color:#fff;transform:translateY(-1px)}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);background:var(--white);
  align-items:center;justify-content:center;
}
.nav-toggle svg{width:20px;height:20px;fill:none;stroke:var(--ink);stroke-width:1.7;stroke-linecap:round}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(19,35,29,.42);
  opacity:0;visibility:hidden;transition:opacity .22s var(--ease),visibility .22s var(--ease);z-index:1050;
}
.drawer-mask.show{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);
  background:var(--white);z-index:1060;padding:22px;
  transform:translateX(100%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;gap:18px;overflow-y:auto;
  border-left:1px solid var(--line);
}
.drawer.show{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}
.drawer-close{width:36px;height:36px;border-radius:8px;border:1px solid var(--line);display:grid;place-items:center}
.drawer-close svg{width:16px;height:16px;fill:none;stroke:var(--ink);stroke-width:1.8;stroke-linecap:round}
.drawer nav{display:flex;flex-direction:column;gap:2px}
.drawer nav a{
  padding:12px 10px;border-radius:8px;font-size:15px;color:rgba(19,35,29,.78);
  border-bottom:1px solid rgba(225,218,205,.6);
}
.drawer nav a.active,.drawer nav a:hover{color:var(--ink);background:var(--paper)}
.drawer .search-input{width:100%}
.drawer .btn-cta{width:100%;justify-content:center;height:44px}

/* ============ Hero ============ */
.hero{
  position:relative;
  background:
    linear-gradient(102deg,rgba(19,35,29,.94) 0%,rgba(19,35,29,.84) 52%,rgba(36,64,55,.82) 100%),
    url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  color:var(--paper);
  padding:88px 0 92px;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(247,243,236,.16) 1px,transparent 1px);
  background-size:22px 22px;opacity:.16;pointer-events:none;
}
.hero-inner{position:relative;z-index:2}
.hero-grid{
  display:grid;grid-template-columns:1fr 400px;gap:56px;align-items:start;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.16em;color:var(--copper);
  text-transform:uppercase;margin-bottom:22px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--copper);display:block}
.hero-title{
  font-size:clamp(36px,4.6vw,58px);
  line-height:1.12;color:#fff;margin-bottom:22px;
}
.hero-title .dash{color:var(--copper);font-weight:400;padding:0 6px}
.hero-sub{
  font-size:17px;line-height:1.8;color:rgba(247,243,236,.78);
  max-width:520px;margin-bottom:32px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.btn-primary-x{
  display:inline-flex;align-items:center;gap:10px;
  height:46px;padding:0 24px;border-radius:999px;
  background:var(--copper-deep);color:#fff;font-size:15px;font-weight:600;
  transition:background .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
  box-shadow:0 12px 26px -18px rgba(143,74,40,.9);
}
.btn-primary-x:hover{background:#7a3f22;color:#fff;transform:translateY(-1px)}
.btn-primary-x svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.btn-ghost-x{
  display:inline-flex;align-items:center;gap:10px;
  height:46px;padding:0 22px;border-radius:999px;
  border:1px solid rgba(247,243,236,.34);color:var(--paper);
  font-size:15px;font-weight:600;background:transparent;
  transition:background .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn-ghost-x:hover{background:rgba(247,243,236,.1);border-color:rgba(247,243,236,.6);color:#fff;transform:translateY(-1px)}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 26px;
  font-size:13px;color:rgba(247,243,236,.66);
  border-top:1px solid rgba(247,243,236,.16);padding-top:20px;
}
.hero-meta span{display:inline-flex;align-items:center;gap:8px}
.hero-meta i{width:6px;height:6px;border-radius:50%;background:var(--copper);display:inline-block}

.hero-card{
  background:var(--paper);color:var(--ink);
  border-radius:14px;padding:26px 24px 22px;
  box-shadow:0 26px 60px -40px rgba(0,0,0,.7);
  border:1px solid rgba(255,255,255,.4);
}
.hero-card-head{
  display:flex;align-items:center;justify-content:space-between;
  padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:6px;
}
.hero-card-head h2{
  font-size:18px;letter-spacing:.02em;
}
.hero-card-tag{
  font-size:11px;letter-spacing:.1em;color:var(--copper-deep);
  background:rgba(184,107,63,.12);border-radius:999px;padding:3px 10px;
  font-family:var(--sans);font-weight:600;
}
.hero-step{
  display:flex;gap:14px;padding:15px 0;border-bottom:1px dashed var(--line);
}
.hero-step:last-child{border-bottom:0;padding-bottom:4px}
.hero-step-num{
  font-family:var(--serif);font-size:19px;color:var(--copper);
  line-height:1.3;min-width:26px;font-weight:700;
}
.hero-step p{margin:0;font-size:14px;line-height:1.7;color:var(--muted)}
.hero-step strong{display:block;font-size:15px;color:var(--ink);font-weight:600;margin-bottom:3px;font-family:var(--sans)}

/* ============ 主体 ============ */
.main-body{background:var(--paper);padding:76px 0 88px}
.guide-grid{
  display:grid;grid-template-columns:216px 1fr;gap:56px;align-items:start;
}
.guide-nav{position:sticky;top:calc(var(--nav-h) + 26px)}
.guide-nav-title{
  font-size:12px;letter-spacing:.14em;color:var(--muted);
  margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--line);
}
.guide-nav ul{display:flex;flex-direction:column}
.guide-nav a{
  display:flex;gap:12px;align-items:baseline;
  padding:11px 10px 11px 12px;border-left:2px solid transparent;
  font-size:14px;color:rgba(19,35,29,.66);border-radius:0 8px 8px 0;
  transition:color .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease);
}
.guide-nav a .n{
  font-family:var(--serif);font-size:15px;color:var(--muted);
  transition:color .22s var(--ease);
}
.guide-nav a:hover{color:var(--ink);background:rgba(255,255,255,.7)}
.guide-nav a.active{
  color:var(--ink);font-weight:600;border-left-color:var(--copper);
  background:rgba(255,255,255,.86);
}
.guide-nav a.active .n{color:var(--copper)}

.guide-content{max-width:820px}
.section-lead{
  font-size:18px;line-height:1.85;color:var(--muted);margin-bottom:40px;
  padding-left:18px;border-left:3px solid var(--copper);
}
.step-block{
  background:var(--white);
  border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px 30px 26px;margin-bottom:26px;
  scroll-margin-top:calc(var(--nav-h) + 26px);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.step-block:hover{border-color:rgba(184,107,63,.4);box-shadow:var(--sh-2);transform:translateY(-2px)}
.step-head{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.step-num{
  font-family:var(--serif);font-size:22px;font-weight:700;color:var(--copper);
  line-height:1;letter-spacing:.02em;min-width:34px;
}
.step-block h2{font-size:23px;line-height:1.35}
.step-block p{font-size:15.5px;line-height:1.85;color:#3E4A44;margin-bottom:14px}
.step-block p:last-of-type{margin-bottom:0}
.callout{
  background:var(--mint);
  border-left:3px solid var(--ink-soft);
  border-radius:0 8px 8px 0;
  padding:14px 18px;margin-top:18px;
  font-size:14px;line-height:1.8;color:var(--ink-soft);
}
.callout strong{font-weight:700;margin-right:6px}
.inline-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tag-x{
  font-size:12.5px;padding:4px 12px;border-radius:999px;
  background:var(--paper);border:1px solid var(--line);color:var(--muted);
}
.figure-block{margin:34px 0 38px}
.figure-block img{
  width:100%;height:auto;border-radius:var(--r-media);
  border:1px solid var(--line);object-fit:cover;
}
.figcap{
  font-size:12.5px;color:var(--muted);text-align:center;margin-top:12px;
}

/* ============ FAQ ============ */
.faq-section{padding:80px 0 84px;background:var(--white);border-top:1px solid var(--line)}
.faq-grid{display:grid;grid-template-columns:1fr 1.35fr;gap:56px;align-items:start}
.faq-intro h2{font-size:clamp(26px,3vw,34px);margin-bottom:16px}
.faq-intro p{font-size:15.5px;color:var(--muted);line-height:1.85;max-width:340px}
.faq-intro .btn-ghost-dark{
  display:inline-flex;align-items:center;gap:9px;margin-top:10px;
  height:44px;padding:0 22px;border-radius:999px;
  border:1px solid rgba(19,35,29,.2);color:var(--ink);font-size:14.5px;font-weight:600;
  transition:background .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.faq-intro .btn-ghost-dark:hover{background:rgba(19,35,29,.05);border-color:rgba(19,35,29,.4);transform:translateY(-1px)}
.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:16.5px;font-weight:600;color:var(--ink);
  transition:color .22s var(--ease);
}
.faq-q:hover{color:var(--copper-deep)}
.faq-plus{
  position:relative;width:20px;height:20px;flex-shrink:0;
  transition:transform .28s var(--ease);
}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;background:var(--copper);border-radius:2px;
}
.faq-plus::before{left:0;top:9px;width:20px;height:2px}
.faq-plus::after{left:9px;top:0;width:2px;height:20px}
.faq-q:not(.collapsed) .faq-plus{transform:rotate(45deg)}
.faq-a{
  font-size:15px;line-height:1.85;color:var(--muted);
  padding:0 46px 22px 0;max-width:720px;
}

/* ============ CTA 带 ============ */
.cta-band{
  background:var(--ink-soft);color:var(--paper);
  padding:44px 0;
}
.cta-band-inner{
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);color:#fff;letter-spacing:.02em}
.cta-band p{margin:6px 0 0;font-size:14px;color:rgba(247,243,236,.68)}
.cta-band .btn-primary-x{background:var(--copper);box-shadow:none}
.cta-band .btn-primary-x:hover{background:var(--copper-deep)}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink);color:var(--paper);
  padding:66px 0 0;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px;
  padding-bottom:48px;border-bottom:1px solid rgba(247,243,236,.14);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.footer-brand .brand-mark{background:rgba(247,243,236,.08);border-color:rgba(247,243,236,.18)}
.footer-brand .brand-mark svg{stroke:var(--copper)}
.footer-brand .brand-text{color:#fff;font-size:16px}
.footer-about{font-size:14px;line-height:1.85;color:rgba(247,243,236,.62);max-width:340px;margin:0}
.footer-col h4{
  font-family:var(--sans);font-size:13px;letter-spacing:.12em;color:rgba(247,243,236,.5);
  font-weight:600;margin-bottom:16px;text-transform:uppercase;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a,.footer-col p{
  font-size:14px;color:rgba(247,243,236,.72);margin:0;line-height:1.7;
  transition:color .22s var(--ease);
}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:22px 0 26px;font-size:13px;color:rgba(247,243,236,.52);
}
.to-top{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:rgba(247,243,236,.72);
  padding:8px 16px;border-radius:999px;border:1px solid rgba(247,243,236,.22);
  transition:color .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.to-top:hover{color:#fff;border-color:rgba(247,243,236,.5);background:rgba(247,243,236,.08)}
.to-top svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:1040;
  display:flex;align-items:center;gap:10px;
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s var(--ease);
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0)}
.float-main{
  display:inline-flex;align-items:center;gap:9px;
  height:48px;padding:0 24px;border-radius:999px;
  background:var(--ink);color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 18px 38px -20px rgba(19,35,29,.8);
  transition:background .22s var(--ease),transform .22s var(--ease);
}
.float-main:hover{background:var(--copper-deep);color:#fff;transform:translateY(-1px)}
.float-main svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.float-sub{display:none}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .nav-link-x{font-size:14px;padding:8px 9px}
  .search-input{width:170px}
  .hero-grid{grid-template-columns:1fr 350px;gap:40px}
  .guide-grid{grid-template-columns:190px 1fr;gap:40px}
}
@media (max-width:991.98px){
  :root{--nav-h:60px}
  .nav-links,.nav-tools .search-form,.nav-tools .btn-cta{display:none}
  .nav-toggle{display:inline-flex}
  .nav-wrap{justify-content:space-between}
  .hero{padding:64px 0 70px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-sub{max-width:100%}
  .guide-grid{grid-template-columns:1fr;gap:26px}
  .guide-nav{position:static;top:auto;background:transparent}
  .guide-nav-title{display:none}
  .guide-nav ul{
    flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:10px;
    scrollbar-width:none;-ms-overflow-style:none;
  }
  .guide-nav ul::-webkit-scrollbar{display:none}
  .guide-nav a{
    border:1px solid var(--line);border-left:1px solid var(--line);
    border-radius:999px;white-space:nowrap;background:var(--white);
    padding:8px 16px;font-size:13.5px;
  }
  .guide-nav a.active{border-color:var(--copper);background:rgba(184,107,63,.1)}
  .faq-grid{grid-template-columns:1fr;gap:34px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .main-body{padding:56px 0 64px}
  .faq-section{padding:56px 0 60px}
}
@media (max-width:767.98px){
  .hero-title{font-size:clamp(32px,7vw,42px)}
  .step-block{padding:24px 20px 22px}
  .step-block h2{font-size:20px}
  .cta-band-inner{flex-direction:column;align-items:flex-start;gap:18px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:14px}
  body{padding-bottom:76px}
  .float-cta{
    left:0;right:0;bottom:0;
    padding:10px 14px calc(10px + env(safe-area-inset-bottom));
    background:rgba(247,243,236,.96);
    border-top:1px solid var(--line);
    gap:10px;
    backdrop-filter:blur(8px);
  }
  .float-main{flex:1;justify-content:center;height:46px;box-shadow:none;font-size:15px}
  .float-sub{
    display:inline-flex;align-items:center;justify-content:center;
    flex:0 0 auto;height:46px;padding:0 20px;border-radius:999px;
    border:1px solid rgba(19,35,29,.24);color:var(--ink);
    font-size:14.5px;font-weight:600;background:var(--white);
  }
  .float-sub:hover{color:var(--copper-deep);border-color:var(--copper)}
}
@media (max-width:575.98px){
  .container-x{padding:0 18px}
  .hero{padding:52px 0 58px}
  .hero-title{font-size:32px}
  .hero-card{padding:20px 18px}
  .btn-primary-x,.btn-ghost-x{height:44px;padding:0 20px}
  .hero-actions{width:100%}
  .hero-actions a{flex:1 1 auto;justify-content:center}
  .faq-q{font-size:15.5px}
  .figcap{font-size:12px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
}
@media print{
  .float-cta,.nav-toggle,.to-top{display:none!important}
}

/* roulang page: category3 */
:root{
  --ink:#13231D;
  --ink-2:#244037;
  --paper:#F7F3EC;
  --paper-2:#EDE7DC;
  --white:#FFFFFF;
  --copper:#B86B3F;
  --copper-deep:#8F4A28;
  --mint:#DCE8E1;
  --line:#E1DACD;
  --muted:#68736D;
  --ok:#2E7D5B;
  --warn:#B07A22;
  --radius:10px;
  --radius-lg:16px;
  --shadow-1:0 1px 2px rgba(19,35,29,.04);
  --shadow-2:0 18px 40px -26px rgba(19,35,29,.28);
  --ease:cubic-bezier(.2,.7,.2,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  padding-bottom:0;
}
img{max-width:100%;display:block;}
a{color:var(--ink-2);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--copper-deep);}
button{font-family:inherit;}
h1,h2,h3,h4,h5{font-family:var(--serif);color:var(--ink);margin:0;letter-spacing:.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:var(--mint);color:var(--ink);}
:focus-visible{outline:2px solid var(--copper);outline-offset:3px;border-radius:4px;}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:104px 0;}
.section-paper{background:var(--paper);}
.section-white{background:var(--white);}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.16em;
  color:var(--copper-deep);text-transform:uppercase;
  margin-bottom:16px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--copper);display:inline-block;}
.section-title{
  font-size:clamp(28px,3.2vw,40px);
  font-weight:700;line-height:1.24;
  margin-bottom:16px;
}
.section-lead{
  font-size:16px;line-height:1.9;color:var(--muted);max-width:560px;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 30px -24px rgba(19,35,29,.6);}
.header-inner{
  display:flex;align-items:center;gap:24px;height:68px;
}
.brand{
  display:flex;align-items:center;gap:10px;flex-shrink:0;
}
.brand-mark{
  width:32px;height:32px;flex:none;
  display:grid;place-items:center;
  border:1px solid var(--copper);border-radius:8px;
  background:var(--paper);
}
.brand-mark svg{
  width:18px;height:18px;fill:none;stroke:var(--copper);
  stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;
}
.brand-text{
  font-family:var(--serif);font-size:15px;font-weight:700;
  color:var(--ink);letter-spacing:.01em;white-space:nowrap;
}
.nav-links{
  display:flex;align-items:center;gap:22px;
  margin:0 auto;padding:0;list-style:none;
}
.nav-link-x{
  position:relative;display:inline-block;
  font-size:15px;line-height:1;
  color:rgba(19,35,29,.72);
  padding:8px 0;
  white-space:nowrap;
}
.nav-link-x::after{
  content:"";position:absolute;left:0;bottom:0;
  width:0;height:2px;background:var(--copper);
  transition:width .22s var(--ease);
}
.nav-link-x:hover,.nav-link-x:focus-visible{color:var(--ink);}
.nav-link-x:hover::after,.nav-link-x:focus-visible::after{width:100%;}
.nav-link-x.active{color:var(--ink-2);font-weight:600;}
.nav-link-x.active::after{width:100%;}
.header-tools{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.search-form{position:relative;}
.search-form .search-icon{
  position:absolute;left:14px;top:50%;transform:translateY(-50%);
  width:16px;height:16px;fill:none;stroke:var(--muted);
  stroke-width:1.7;stroke-linecap:round;pointer-events:none;
}
.search-form input[type="search"]{
  width:200px;height:38px;border:1px solid transparent;
  background:var(--paper);border-radius:999px;
  padding:0 16px 0 38px;font-size:14px;color:var(--ink);
  outline:none;transition:all .22s var(--ease);
}
.search-form input[type="search"]::placeholder{color:rgba(104,115,109,.85);}
.search-form input[type="search"]:focus{
  background:var(--white);border-color:var(--copper);
  box-shadow:0 0 0 3px rgba(184,107,63,.16);
}
.btn-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 20px;border-radius:999px;
  background:var(--ink);color:var(--paper);
  font-size:14px;font-weight:600;white-space:nowrap;
  border:1px solid var(--ink);
  transition:all .22s var(--ease);
}
.btn-cta:hover{background:var(--copper-deep);border-color:var(--copper-deep);color:#fff;transform:translateY(-1px);}
.menu-btn{
  display:none;width:40px;height:40px;border:1px solid var(--line);
  border-radius:10px;background:var(--white);align-items:center;justify-content:center;
  cursor:pointer;transition:all .22s var(--ease);
}
.menu-btn:hover{border-color:var(--copper);}
.menu-btn svg{width:20px;height:20px;fill:none;stroke:var(--ink);stroke-width:1.7;stroke-linecap:round;}

/* 移动端抽屉 */
.drawer{
  position:fixed;inset:0;z-index:1060;
  background:rgba(19,35,29,.42);
  opacity:0;visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.drawer.open{opacity:1;visibility:visible;}
.drawer-panel{
  position:absolute;top:0;right:0;
  width:min(330px,88vw);height:100%;
  background:var(--white);
  padding:22px 22px 32px;
  display:flex;flex-direction:column;gap:6px;
  overflow-y:auto;
  transform:translateX(100%);
  transition:transform .3s var(--ease);
  box-shadow:-20px 0 50px -30px rgba(19,35,29,.5);
}
.drawer.open .drawer-panel{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);
  background:var(--white);cursor:pointer;display:grid;place-items:center;
}
.drawer-close svg{width:16px;height:16px;fill:none;stroke:var(--ink);stroke-width:1.8;stroke-linecap:round;}
.drawer-panel .nav-link-x{
  display:block;font-size:16px;padding:14px 0;
  border-bottom:1px solid var(--line);color:var(--ink-2);
}
.drawer-panel .nav-link-x::after{display:none;}
.drawer-panel .nav-link-x.active{color:var(--copper-deep);font-weight:600;}
.drawer-search{margin-top:18px;}
.drawer-search input{
  width:100%;height:44px;border-radius:999px;border:1px solid var(--line);
  background:var(--paper);padding:0 18px;font-size:15px;outline:none;
}
.drawer-search input:focus{border-color:var(--copper);background:#fff;box-shadow:0 0 0 3px rgba(184,107,63,.16);}
.drawer-cta{margin-top:14px;width:100%;height:46px;font-size:15px;}

/* ============ Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--ink);color:var(--paper);
  padding:84px 0 76px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(102deg,rgba(19,35,29,.95) 0%,rgba(19,35,29,.86) 52%,rgba(19,35,29,.58) 100%),
    url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.page-hero .container-x{position:relative;z-index:1;}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:12px;color:rgba(247,243,236,.58);
  margin-bottom:22px;
}
.crumb a{color:rgba(247,243,236,.72);}
.crumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.crumb span.sep{opacity:.5;}
.hero-h1{
  font-size:clamp(32px,4.6vw,56px);
  line-height:1.18;font-weight:700;
  color:var(--paper);
  margin-bottom:18px;
}
.hero-h1 .dot{color:var(--copper);padding:0 6px;}
.hero-sub{
  font-size:17px;line-height:1.85;
  color:rgba(247,243,236,.82);
  max-width:560px;margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.btn-primary-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;
  background:var(--copper);color:#fff;
  font-size:15px;font-weight:600;
  border:1px solid var(--copper);
  transition:all .22s var(--ease);
}
.btn-primary-x:hover{background:var(--copper-deep);border-color:var(--copper-deep);color:#fff;transform:translateY(-1px);}
.btn-ghost-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;
  background:transparent;color:var(--paper);
  border:1px solid rgba(247,243,236,.34);
  font-size:15px;font-weight:600;
  transition:all .22s var(--ease);
}
.btn-ghost-x:hover{border-color:rgba(247,243,236,.7);background:rgba(247,243,236,.08);color:#fff;transform:translateY(-1px);}
.btn-ghost-x.on-light{color:var(--ink);border-color:rgba(19,35,29,.22);}
.btn-ghost-x.on-light:hover{background:rgba(19,35,29,.05);border-color:rgba(19,35,29,.4);color:var(--ink);}
.hero-card{
  background:var(--white);color:var(--ink);
  border-radius:var(--radius-lg);
  padding:26px 24px;
  box-shadow:var(--shadow-2);
  border:1px solid rgba(225,218,205,.6);
}
.hero-card h2{
  font-size:16px;font-weight:700;margin-bottom:4px;letter-spacing:.02em;
}
.hero-card .card-note{font-size:12.5px;color:var(--muted);margin-bottom:16px;}
.hero-steps{display:flex;flex-direction:column;gap:0;}
.hero-step{
  display:flex;gap:12px;align-items:flex-start;
  padding:13px 0;border-top:1px solid var(--line);
  font-size:14px;line-height:1.65;color:var(--ink-2);
}
.hero-step .num{
  font-family:var(--serif);font-size:15px;font-weight:700;
  color:var(--copper);flex:none;width:20px;
  font-variant-numeric:tabular-nums;
}

/* ============ 检查清单 + 对照表 ============ */
.check-block{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:28px 26px;
  box-shadow:var(--shadow-1);
}
.check-block h2{
  font-size:22px;font-weight:700;margin-bottom:8px;
}
.check-block .sub{font-size:14px;color:var(--muted);margin-bottom:6px;}
.check-list{border-top:1px solid var(--line);margin-top:14px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:13px 0;border-bottom:1px solid var(--line);
  font-size:14.5px;line-height:1.75;color:var(--ink-2);
}
.check-list li:last-child{border-bottom:0;}
.check-icon{
  width:22px;height:22px;flex:none;border-radius:50%;
  background:var(--mint);display:grid;place-items:center;margin-top:3px;
}
.check-icon svg{width:11px;height:11px;fill:none;stroke:var(--ok);stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round;}

.compare{
  border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;background:var(--white);box-shadow:var(--shadow-1);
}
.compare-head{
  display:grid;grid-template-columns:1fr 1fr;
  background:var(--mint);
  font-size:13px;font-weight:700;color:var(--ink-2);letter-spacing:.04em;
}
.compare-head div{padding:13px 16px;}
.compare-head div:first-child{border-right:1px solid rgba(225,218,205,.9);}
.compare-row{
  display:grid;grid-template-columns:1fr 1fr;
  border-top:1px solid var(--line);
  transition:background .2s var(--ease);
}
.compare-row:hover{background:var(--paper);}
.compare-row > div{
  padding:13px 16px;font-size:14px;line-height:1.7;
  display:flex;gap:9px;align-items:flex-start;
}
.compare-row > div:first-child{
  border-right:1px solid var(--line);color:var(--ink-2);
}
.compare-row > div:last-child{color:var(--muted);}
.mark-ok,.mark-no{
  width:8px;height:8px;flex:none;margin-top:8px;border-radius:2px;
}
.mark-ok{background:var(--ok);}
.mark-no{background:var(--warn);}

/* ============ 日常习惯卡 ============ */
.habit-card{
  height:100%;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:26px 24px;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.habit-card:hover{
  transform:translateY(-3px);
  border-color:rgba(184,107,63,.4);
  box-shadow:var(--shadow-2);
}
.habit-icon{
  width:42px;height:42px;border-radius:12px;
  background:var(--paper);border:1px solid var(--line);
  display:grid;place-items:center;margin-bottom:18px;
}
.habit-icon svg{
  width:21px;height:21px;fill:none;stroke:var(--copper);
  stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;
}
.habit-card h3{font-size:18px;font-weight:700;margin-bottom:10px;}
.habit-card p{font-size:14.5px;line-height:1.85;color:var(--muted);}
.habit-index{
  font-family:var(--serif);font-size:13px;color:var(--copper);
  letter-spacing:.12em;margin-bottom:10px;font-variant-numeric:tabular-nums;
}

/* ============ 风险信号 ============ */
.risk-media{
  border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-1);
  height:100%;min-height:280px;
}
.risk-media img{width:100%;height:100%;object-fit:cover;}
.risk-list{margin-top:8px;}
.risk-list li{
  display:flex;gap:14px;align-items:flex-start;
  padding:16px 0;border-bottom:1px solid var(--line);
  font-size:15px;line-height:1.8;color:var(--ink-2);
}
.risk-list li:first-child{border-top:1px solid var(--line);}
.risk-list .flag{
  flex:none;width:26px;height:26px;border-radius:8px;
  background:rgba(176,122,34,.12);
  display:grid;place-items:center;margin-top:2px;
}
.risk-list .flag svg{width:14px;height:14px;fill:none;stroke:var(--warn);stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}
.risk-list strong{font-weight:600;color:var(--ink);}

/* ============ FAQ ============ */
.faq-wrap{max-width:820px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 0;background:none;border:0;cursor:pointer;
  text-align:left;font-size:17px;font-weight:600;color:var(--ink);
  transition:color .22s var(--ease);
}
.faq-btn:hover{color:var(--copper-deep);}
.faq-plus{
  position:relative;flex:none;width:20px;height:20px;
  transition:transform .26s var(--ease);
}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;background:var(--copper);border-radius:2px;
}
.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{transform:rotate(45deg);}
.faq-panel{
  max-height:0;overflow:hidden;
  transition:max-height .3s var(--ease);
}
.faq-panel p{
  font-size:15.5px;line-height:1.9;color:var(--muted);
  padding:0 40px 22px 0;max-width:720px;
}
.faq-aside{
  background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:26px 24px;
  box-shadow:var(--shadow-1);
}
.faq-aside h3{font-size:17px;font-weight:700;margin-bottom:10px;}
.faq-aside p{font-size:14px;line-height:1.85;color:var(--muted);margin-bottom:16px;}

/* ============ CTA 带 ============ */
.cta-band{
  background:var(--ink-2);color:var(--paper);
  padding:52px 0;
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:28px;flex-wrap:wrap;
}
.cta-inner h2{
  font-size:clamp(22px,2.6vw,30px);font-weight:700;color:var(--paper);
  margin-bottom:6px;
}
.cta-inner p{font-size:14.5px;color:rgba(247,243,236,.72);}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:1040;
  display:flex;align-items:center;gap:8px;
  height:48px;padding:0 22px;border-radius:999px;
  background:var(--ink);color:var(--paper);
  font-size:15px;font-weight:600;
  box-shadow:0 18px 40px -22px rgba(19,35,29,.7);
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:all .28s var(--ease);
}
.float-cta:hover{background:var(--copper-deep);color:#fff;transform:translateY(-2px);}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink);color:rgba(247,243,236,.78);
  padding:64px 0 0;font-size:14px;
}
.footer-grid{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;
  gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(247,243,236,.14);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(247,243,236,.06);border-color:rgba(184,107,63,.7);}
.footer-brand .brand-text{color:var(--paper);font-size:15px;}
.footer-about{font-size:13.5px;line-height:1.9;color:rgba(247,243,236,.6);max-width:340px;}
.footer-col h4{
  font-size:14px;font-weight:700;color:var(--paper);
  margin-bottom:16px;font-family:var(--sans);letter-spacing:.04em;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:rgba(247,243,236,.66);}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-col p{font-size:13.5px;line-height:1.8;color:rgba(247,243,236,.6);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;padding:22px 0 26px;
  font-size:12.5px;color:rgba(247,243,236,.52);
}
.to-top{
  display:inline-flex;align-items:center;gap:7px;
  background:none;border:0;cursor:pointer;
  font-size:12.5px;color:rgba(247,243,236,.66);
  transition:color .22s var(--ease);
}
.to-top:hover{color:#fff;}
.to-top svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .nav-link-x{font-size:14px;}
  .nav-links{gap:16px;}
  .search-form input[type="search"]{width:150px;}
}
@media (max-width:991.98px){
  .nav-links,.header-tools .search-form,.header-tools .btn-cta{display:none;}
  .menu-btn{display:flex;}
  .header-inner{height:60px;gap:12px;}
  .section{padding:80px 0;}
  .page-hero{padding:56px 0 52px;}
  .hero-h1{font-size:clamp(28px,6vw,40px);}
  .hero-card{margin-top:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  .section{padding:56px 0;}
  .compare-head,.compare-row{grid-template-columns:1fr;}
  .compare-head div:first-child{border-right:0;border-bottom:1px solid rgba(225,218,205,.9);}
  .compare-row > div:first-child{border-right:0;border-bottom:1px dashed var(--line);}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:20px;}
  .cta-band{padding:40px 0;}
  .page-hero{padding:44px 0 46px;}
  .hero-sub{font-size:15.5px;}
  .float-cta{
    left:0;right:0;bottom:0;height:auto;
    border-radius:0;padding:12px 18px calc(12px + env(safe-area-inset-bottom));
    justify-content:center;
    transform:translateY(100%);
  }
  .float-cta.show{transform:translateY(0);}
  .float-cta:hover{transform:translateY(0);}
  body{padding-bottom:70px;}
  .risk-media{min-height:220px;margin-bottom:24px;}
}
@media (max-width:575.98px){
  .container-x{padding:0 18px;}
  .brand-text{font-size:13.5px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .hero-actions .btn-primary-x,.hero-actions .btn-ghost-x{width:100%;}
  .check-block{padding:22px 18px;}
  .faq-panel p{padding-right:0;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}
@media print{
  .site-header,.float-cta,.to-top,.drawer{display:none !important;}
}

/* roulang page: category2 */
:root{
  --ink:#13231D;
  --ink-2:#244037;
  --paper:#F7F3EC;
  --paper-2:#EDE7DC;
  --white:#FFFFFF;
  --copper:#B86B3F;
  --copper-deep:#8F4A28;
  --mint:#DCE8E1;
  --line:#E1DACD;
  --muted:#68736D;
  --ok:#2E7D5B;
  --warn:#B07A22;
  --radius:10px;
  --radius-lg:14px;
  --radius-xl:16px;
  --shadow-1:0 1px 2px rgba(19,35,29,.04);
  --shadow-2:0 18px 40px -26px rgba(19,35,29,.28);
  --ease:cubic-bezier(.2,.7,.2,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--copper-deep)}
p{margin:0 0 16px}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:700;letter-spacing:.015em;line-height:1.22;color:var(--ink)}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--copper);outline-offset:3px;border-radius:4px}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:104px 0}
.section-tight{padding:80px 0}
.bg-white-x{background:var(--white)}
.bg-paper-x{background:var(--paper)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow .28s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 24px -20px rgba(19,35,29,.55)}
.header-inner{display:flex;align-items:center;gap:22px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:28px;height:28px;flex:none;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(184,107,63,.4);border-radius:8px;
}
.brand-mark svg{width:17px;height:17px;fill:none;stroke:var(--copper);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.brand-text{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:.01em;white-space:nowrap}
.brand:hover .brand-text{color:var(--copper-deep)}
.nav-links{display:flex;align-items:center;gap:22px;margin-left:6px}
.nav-link-x{
  position:relative;display:inline-block;
  padding:6px 0;font-size:15px;color:rgba(19,35,29,.72);
  white-space:nowrap;transition:color .22s var(--ease);
}
.nav-link-x::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--copper);transition:width .22s var(--ease);
}
.nav-link-x:hover{color:var(--ink)}
.nav-link-x:hover::after{width:100%}
.nav-link-x.active{color:var(--ink);font-weight:600}
.nav-link-x.active::after{width:100%}
.nav-tools{display:flex;align-items:center;gap:14px;margin-left:auto}
.search-x{position:relative;display:flex;align-items:center}
.search-x svg{
  position:absolute;left:12px;width:15px;height:15px;pointer-events:none;
  fill:none;stroke:var(--muted);stroke-width:1.6;stroke-linecap:round;
}
.search-x input{
  width:200px;height:38px;padding:0 14px 0 34px;
  font-size:14px;color:var(--ink);
  background:var(--paper);border:1px solid transparent;border-radius:999px;
  transition:background .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.search-x input::placeholder{color:var(--muted)}
.search-x input:focus{
  outline:none;background:var(--white);
  border-color:rgba(184,107,63,.55);box-shadow:0 0 0 3px rgba(184,107,63,.16);
}
.btn-nav{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 20px;border-radius:999px;
  background:var(--ink);color:var(--white);
  font-size:14px;font-weight:600;letter-spacing:.02em;border:1px solid var(--ink);
  transition:background .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.btn-nav:hover{background:var(--copper-deep);border-color:var(--copper-deep);color:var(--white);transform:translateY(-1px)}
.nav-toggle{
  display:none;width:40px;height:40px;margin-left:auto;
  background:transparent;border:1px solid var(--line);border-radius:10px;
  padding:0;align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:16px;height:1.6px;background:var(--ink);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5.6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.6px) rotate(-45deg)}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(19,35,29,.42);
  opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s;z-index:1040;
}
.drawer-mask.open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);
  background:var(--white);z-index:1050;padding:24px 22px 32px;
  transform:translateX(102%);transition:transform .3s var(--ease);
  overflow-y:auto;border-left:1px solid var(--line);
  display:flex;flex-direction:column;gap:20px;
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-close{
  width:34px;height:34px;border:1px solid var(--line);border-radius:9px;background:var(--paper);
  font-size:16px;line-height:1;color:var(--ink);
}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{
  padding:13px 2px;font-size:15.5px;color:rgba(19,35,29,.78);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--ink);font-weight:600}
.drawer-nav a:hover{color:var(--copper-deep)}
.drawer-search input{width:100%}
.drawer-cta{display:block;text-align:center;height:46px;line-height:44px;border-radius:999px;background:var(--ink);color:var(--white);font-weight:600}
.drawer-cta:hover{background:var(--copper-deep);color:var(--white)}

/* ---------- 按钮与通用组件 ---------- */
.btn-copper{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;
  background:var(--copper);color:var(--white);border:1px solid var(--copper);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  transition:background .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-copper:hover{background:var(--copper-deep);border-color:var(--copper-deep);color:var(--white);transform:translateY(-1px);box-shadow:0 14px 26px -18px rgba(143,74,40,.9)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;
  background:transparent;color:var(--ink);
  border:1px solid rgba(19,35,29,.22);font-size:15px;font-weight:600;
  transition:background .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn-ghost:hover{background:rgba(19,35,29,.05);border-color:rgba(19,35,29,.38);color:var(--ink);transform:translateY(-1px)}
.btn-ghost-light{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;
  background:transparent;color:var(--paper);
  border:1px solid rgba(247,243,236,.34);font-size:15px;font-weight:600;
  transition:background .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn-ghost-light:hover{background:rgba(247,243,236,.1);border-color:rgba(247,243,236,.62);color:var(--paper);transform:translateY(-1px)}
.tag-chip{
  display:inline-flex;align-items:center;gap:7px;
  height:28px;padding:0 14px;border-radius:999px;
  font-size:12.5px;font-weight:600;letter-spacing:.06em;
  color:var(--copper-deep);background:rgba(184,107,63,.12);
  border:1px solid rgba(184,107,63,.24);
}
.tag-chip.on-dark{color:#EBC7AF;background:rgba(184,107,63,.2);border-color:rgba(184,107,63,.42)}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.18em;
  color:var(--copper);margin-bottom:14px;
}
.section-head{max-width:760px;margin-bottom:48px}
.section-title{font-size:clamp(28px,3.2vw,40px);line-height:1.22;margin-bottom:16px}
.section-sub{font-size:16.5px;color:var(--muted);line-height:1.85;margin:0}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--copper-deep);
}
.link-more svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .22s var(--ease)}
.link-more:hover svg{transform:translateX(4px)}

/* ---------- 页面首屏 ---------- */
.page-hero{position:relative;background:var(--ink);color:var(--paper);padding:56px 0 84px;overflow:hidden}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(102deg,rgba(19,35,29,.95) 0%,rgba(19,35,29,.88) 46%,rgba(19,35,29,.72) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.page-hero .container-x{position:relative;z-index:1}
.breadcrumb-x{display:flex;align-items:center;gap:8px;font-size:12px;color:rgba(247,243,236,.58);margin-bottom:34px}
.breadcrumb-x a{color:rgba(247,243,236,.58)}
.breadcrumb-x a:hover{color:var(--paper)}
.breadcrumb-x span[aria-current]{color:rgba(247,243,236,.86)}
.page-hero h1{
  color:var(--paper);font-size:clamp(30px,4.1vw,46px);line-height:1.16;
  margin:18px 0 20px;font-weight:700;
}
.hero-lead{font-size:17px;line-height:1.9;color:rgba(247,243,236,.82);max-width:600px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-aside{
  background:rgba(247,243,236,.055);
  border:1px solid rgba(247,243,236,.2);
  border-radius:var(--radius-lg);
  padding:26px 24px;
  backdrop-filter:none;
}
.hero-aside h2{
  font-size:16px;color:var(--paper);letter-spacing:.04em;margin-bottom:6px;
  font-family:var(--sans);font-weight:700;
}
.hero-aside .aside-note{font-size:12.5px;color:rgba(247,243,236,.58);margin-bottom:18px}
.aside-steps{display:flex;flex-direction:column}
.aside-step{
  display:grid;grid-template-columns:34px 1fr;gap:12px;align-items:start;
  padding:14px 0;border-top:1px solid rgba(247,243,236,.14);
}
.aside-step:first-child{border-top:none}
.aside-step .n{
  font-family:var(--serif);font-size:15px;color:var(--copper);
  border:1px solid rgba(184,107,63,.45);border-radius:6px;
  width:26px;height:26px;display:flex;align-items:center;justify-content:center;
  line-height:1;padding-top:1px;
}
.aside-step .t{font-size:14.5px;color:rgba(247,243,236,.92);line-height:1.6;margin:0}
.aside-step .t em{display:block;font-style:normal;font-size:12.5px;color:rgba(247,243,236,.56);margin-top:3px;line-height:1.6}

/* ---------- Bento 功能矩阵 ---------- */
.bento-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.bento-card{
  grid-column:span 3;
  display:flex;flex-direction:column;
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 24px 22px;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.bento-card:hover{transform:translateY(-3px);border-color:rgba(184,107,63,.42);box-shadow:var(--shadow-2)}
.bento-card.is-large{grid-column:span 6;padding:0;overflow:hidden}
.bento-media{position:relative;overflow:hidden;background:var(--paper-2)}
.bento-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/9;transition:transform .4s var(--ease)}
.bento-card.is-large:hover .bento-media img{transform:scale(1.02)}
.bento-body{padding:24px 26px 26px;display:flex;flex-direction:column;flex:1}
.bento-badge{
  position:absolute;left:16px;top:16px;
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;font-size:12px;font-weight:600;
  color:var(--ink);background:rgba(247,243,236,.92);border:1px solid rgba(225,218,205,.9);
}
.bento-icon{
  width:38px;height:38px;display:flex;align-items:center;justify-content:center;
  border-radius:10px;background:rgba(220,232,225,.6);border:1px solid rgba(36,64,55,.1);
  margin-bottom:16px;
}
.bento-icon svg{width:19px;height:19px;fill:none;stroke:var(--ink-2);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.bento-card h3{font-size:19px;margin-bottom:10px;letter-spacing:.01em}
.bento-card.is-large h3{font-size:22px}
.bento-card p{font-size:14.5px;line-height:1.85;color:var(--muted);margin-bottom:18px}
.bento-card .link-more{margin-top:auto}

/* ---------- 场景列表 ---------- */
.scene-list{border-bottom:1px solid var(--line)}
.scene-row{
  display:grid;grid-template-columns:88px 1fr;gap:28px;align-items:start;
  padding:30px 8px;border-top:1px solid var(--line);
  transition:background .22s var(--ease);
}
.scene-row:hover{background:rgba(255,255,255,.75)}
.scene-row .idx{
  font-family:var(--serif);font-size:30px;line-height:1;color:var(--copper);
  letter-spacing:.02em;padding-top:2px;
}
.scene-row h3{font-size:20px;margin-bottom:8px}
.scene-row p{font-size:15px;line-height:1.85;color:var(--muted);margin:0;max-width:760px}

/* ---------- 流程 ---------- */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;position:relative}
.step-item{position:relative;padding-top:8px}
.step-item::after{
  content:"";position:absolute;top:44px;right:-14px;width:calc(100% - 60px);
  border-top:1px dashed var(--line);
}
.step-item:last-child::after{display:none}
.step-num{
  display:block;font-family:var(--serif);font-size:58px;line-height:1;font-weight:700;
  color:transparent;-webkit-text-stroke:1px rgba(184,107,63,.65);
  margin-bottom:18px;letter-spacing:.02em;
}
.step-item h3{font-size:20px;margin-bottom:10px}
.step-item p{font-size:15px;color:var(--muted);line-height:1.85;margin:0}

/* ---------- 深色证据区 ---------- */
.proof{background:var(--ink);color:var(--paper);position:relative;overflow:hidden}
.proof .section-title,.proof h2{color:var(--paper)}
.proof .section-sub{color:rgba(247,243,236,.7)}
.proof-note{font-size:13px;color:rgba(247,243,236,.52);line-height:1.8;margin-top:18px;max-width:380px}
.proof-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:rgba(247,243,236,.14);border:1px solid rgba(247,243,236,.14);border-radius:var(--radius-lg);overflow:hidden}
.proof-cell{background:var(--ink);padding:32px 28px;transition:background .22s var(--ease)}
.proof-cell:hover{background:var(--ink-2)}
.proof-cell .num{
  font-family:var(--serif);font-size:clamp(38px,3.6vw,50px);line-height:1;color:var(--paper);
  font-variant-numeric:tabular-nums;margin-bottom:10px;letter-spacing:.02em;
}
.proof-cell .num small{font-size:15px;font-family:var(--sans);color:rgba(247,243,236,.6);margin-left:6px;letter-spacing:0}
.proof-cell .label{font-size:13px;color:rgba(247,243,236,.66);line-height:1.7}
.quote-line{
  margin-top:28px;padding-left:16px;border-left:2px solid var(--copper);
  font-size:14px;color:rgba(247,243,236,.78);line-height:1.8;
}
.quote-line span{display:block;font-size:12px;color:rgba(247,243,236,.48);margin-top:6px}

/* ---------- FAQ ---------- */
.faq-col-head .section-sub{max-width:320px}
.faq-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  padding:20px 2px;cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.65;
  transition:color .22s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--copper-deep)}
.faq-icon{
  position:relative;flex:none;width:20px;height:20px;margin-top:4px;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--copper);border-radius:2px;
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.faq-icon::before{left:0;top:9px;width:20px;height:1.8px}
.faq-icon::after{left:9px;top:0;width:1.8px;height:20px}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-answer{padding:0 40px 22px 2px;font-size:15.5px;line-height:1.9;color:var(--muted);max-width:720px}
.faq-answer p:last-child{margin-bottom:0}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--ink-2);color:var(--paper);padding:60px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta-inner h2{color:var(--paper);font-size:clamp(24px,2.6vw,32px);line-height:1.3;margin-bottom:8px}
.cta-inner p{color:rgba(247,243,236,.68);font-size:14.5px;margin:0}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--paper);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{border-color:rgba(184,107,63,.5)}
.footer-brand .brand-text{color:var(--paper);font-size:15px;font-weight:700}
.footer-about{font-size:14px;line-height:1.9;color:rgba(247,243,236,.62);max-width:340px;margin:0}
.footer-col h4{
  font-family:var(--sans);font-size:13px;font-weight:700;letter-spacing:.12em;
  color:rgba(247,243,236,.9);margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a,.footer-col p{font-size:14px;line-height:1.7;color:rgba(247,243,236,.6);margin:0}
.footer-col a:hover{color:var(--paper);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{
  border-top:1px solid rgba(247,243,236,.14);
  padding:20px 0 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom span{font-size:12.5px;color:rgba(247,243,236,.5)}
.to-top{
  display:inline-flex;align-items:center;gap:6px;
  background:transparent;border:1px solid rgba(247,243,236,.24);border-radius:999px;
  height:32px;padding:0 14px;font-size:12.5px;color:rgba(247,243,236,.72);
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.to-top svg{width:13px;height:13px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.to-top:hover{background:rgba(247,243,236,.1);color:var(--paper);border-color:rgba(247,243,236,.45)}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:1040;
  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:0 16px 34px -18px rgba(19,35,29,.75);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s,background .22s var(--ease);
}
.float-cta svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{background:var(--copper-deep);color:var(--paper)}
.float-cta-mobile{display:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-links{gap:18px}
  .nav-link-x{font-size:14px}
  .search-x input{width:160px}
  .bento-card{grid-column:span 6}
  .bento-card.is-large{grid-column:span 12}
}
@media (max-width:991px){
  .nav-links,.nav-tools{display:none}
  .nav-toggle{display:flex}
  .section{padding:80px 0}
  .section-tight{padding:64px 0}
  .page-hero{padding:44px 0 64px}
  .hero-aside{margin-top:34px}
  .bento-card,.bento-card.is-large{grid-column:span 12}
  .steps-grid{grid-template-columns:1fr;gap:34px}
  .step-item::after{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .proof-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .section{padding:56px 0}
  .section-tight{padding:52px 0}
  .container-x{padding:0 20px}
  .page-hero{padding:36px 0 56px}
  .hero-actions .btn-copper,.hero-actions .btn-ghost{width:100%}
  .scene-row{grid-template-columns:52px 1fr;gap:16px;padding:24px 2px}
  .scene-row .idx{font-size:24px}
  .proof-grid{grid-template-columns:1fr}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions a{flex:1;min-width:140px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
  .float-cta{display:none}
  .float-cta-mobile{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:1040;
    gap:10px;padding:10px 14px calc(10px + env(safe-area-inset-bottom));
    background:rgba(255,255,255,.97);border-top:1px solid var(--line);
    box-shadow:0 -8px 24px -20px rgba(19,35,29,.7);
    transform:translateY(110%);transition:transform .3s var(--ease);
  }
  .float-cta-mobile.show{transform:translateY(0)}
  .float-cta-mobile a{
    display:flex;align-items:center;justify-content:center;
    height:46px;border-radius:999px;font-size:15px;font-weight:600;flex:1;
  }
  .float-cta-mobile .primary{background:var(--copper);color:var(--white)}
  .float-cta-mobile .secondary{background:var(--paper);color:var(--ink);border:1px solid var(--line)}
  body{padding-bottom:72px}
  .faq-item summary{font-size:16px;padding:18px 0}
  .faq-answer{padding-right:8px}
}
@media (max-width:575px){
  .page-hero h1{font-size:clamp(26px,8vw,32px)}
  .hero-lead{font-size:15.5px}
  .section-title{font-size:clamp(24px,6.6vw,30px)}
  .step-num{font-size:46px}
  .bento-body{padding:20px 20px 22px}
  .tag-chip{font-size:11.5px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}
@media print{
  .site-header,.float-cta,.float-cta-mobile,.to-top{display:none !important}
}

/* roulang page: category4 */
:root{
  --ink:#13231D;
  --ink-2:#244037;
  --paper:#F7F3EC;
  --paper-2:#EDE7DC;
  --white:#FFFFFF;
  --copper:#B86B3F;
  --copper-deep:#8F4A28;
  --mint:#DCE8E1;
  --line:#E1DACD;
  --muted:#68736D;
  --ok:#2E7D5B;
  --warn:#B07A22;
  --radius-sm:8px;
  --radius:10px;
  --radius-lg:16px;
  --shadow-1:0 1px 2px rgba(19,35,29,.04);
  --shadow-2:0 18px 40px -26px rgba(19,35,29,.28);
  --ease:cubic-bezier(.2,.7,.2,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img{max-width:100%;height:auto;display:block;}
a{color:var(--ink);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--copper-deep);}
button{font-family:inherit;}
h1,h2,h3,h4,h5{font-family:var(--serif);color:var(--ink);letter-spacing:.015em;margin:0;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}

:focus-visible{
  outline:2px solid var(--copper);
  outline-offset:3px;
  border-radius:4px;
}

.container-x{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 24px -18px rgba(19,35,29,.45);}

.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:68px;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:28px;height:28px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(184,107,63,.55);
  border-radius:7px;
  background:var(--paper);
}
.brand-mark svg{
  width:18px;height:18px;
  fill:none;stroke:var(--copper);stroke-width:1.5;
  stroke-linecap:round;stroke-linejoin:round;
}
.brand-text{
  font-family:var(--serif);
  font-size:15px;
  font-weight:700;
  color:var(--ink);
  white-space:nowrap;
  letter-spacing:.02em;
}
.brand:hover .brand-text{color:var(--ink-2);}

.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin:0 auto;
}
.nav-link-x{
  position:relative;
  padding:8px 10px;
  font-size:15px;
  color:rgba(19,35,29,.72);
  white-space:nowrap;
  border-radius:6px;
  transition:color .22s var(--ease);
}
.nav-link-x::after{
  content:"";
  position:absolute;
  left:10px;right:10px;bottom:2px;
  height:2px;
  background:var(--copper);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s var(--ease);
}
.nav-link-x:hover{color:var(--ink);}
.nav-link-x:hover::after,
.nav-link-x.active::after{transform:scaleX(1);}
.nav-link-x.active{color:var(--ink-2);font-weight:600;}

.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}

.nav-search{
  position:relative;
  display:flex;
  align-items:center;
}
.nav-search input{
  width:200px;
  height:38px;
  border:1px solid transparent;
  background:var(--paper);
  border-radius:999px;
  padding:0 38px 0 16px;
  font-size:14px;
  color:var(--ink);
  transition:background .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.nav-search input::placeholder{color:var(--muted);}
.nav-search input:focus{
  outline:none;
  background:var(--white);
  border-color:var(--copper);
  box-shadow:0 0 0 3px rgba(184,107,63,.16);
}
.nav-search button{
  position:absolute;
  right:6px;
  width:28px;height:28px;
  border:0;background:transparent;
  display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;border-radius:50%;
}
.nav-search button svg{
  width:16px;height:16px;
  fill:none;stroke:var(--muted);stroke-width:1.6;stroke-linecap:round;
}
.nav-search button:hover svg{stroke:var(--copper-deep);}

.btn-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:38px;
  padding:0 18px;
  border-radius:999px;
  background:var(--ink);
  color:var(--white);
  font-size:14px;
  font-weight:600;
  letter-spacing:.02em;
  transition:background .22s var(--ease),transform .22s var(--ease);
}
.btn-cta:hover{
  background:var(--copper-deep);
  color:var(--white);
  transform:translateY(-1px);
}

.nav-toggle{
  display:none;
  width:40px;height:40px;
  border:1px solid var(--line);
  border-radius:10px;
  background:var(--white);
  cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle svg{
  width:20px;height:20px;
  fill:none;stroke:var(--ink);stroke-width:1.6;stroke-linecap:round;
}

.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:var(--white);
  padding:16px 0 22px;
}
.mobile-drawer.open{display:block;}
.mobile-drawer .m-nav a{
  display:block;
  padding:12px 4px;
  font-size:16px;
  color:var(--ink);
  border-bottom:1px solid var(--line);
}
.mobile-drawer .m-nav a.active{color:var(--copper-deep);font-weight:600;}
.mobile-drawer .m-search{
  display:flex;gap:8px;margin-top:16px;
}
.mobile-drawer .m-search input{
  flex:1;height:44px;border-radius:999px;border:1px solid var(--line);
  background:var(--paper);padding:0 16px;font-size:15px;color:var(--ink);
}
.mobile-drawer .m-search input:focus{
  outline:none;border-color:var(--copper);
  box-shadow:0 0 0 3px rgba(184,107,63,.16);
}
.mobile-drawer .m-search button{
  height:44px;padding:0 20px;border:0;border-radius:999px;
  background:var(--ink);color:var(--white);font-size:15px;font-weight:600;
}
.mobile-drawer .m-cta{
  display:flex;align-items:center;justify-content:center;
  height:48px;margin-top:14px;border-radius:999px;
  background:var(--copper-deep);color:var(--white);
  font-size:15px;font-weight:600;
}
.mobile-drawer .m-cta:hover{background:var(--copper);color:var(--white);}

/* ============ 通用按钮 ============ */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;
  border-radius:999px;border:1px solid var(--copper-deep);
  background:var(--copper-deep);color:var(--white);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  transition:background .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-main:hover{
  background:var(--copper);color:var(--white);
  transform:translateY(-1px);
  box-shadow:var(--shadow-2);
}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;
  border-radius:999px;border:1px solid rgba(19,35,29,.2);
  background:transparent;color:var(--ink);
  font-size:15px;font-weight:600;
  transition:background .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn-ghost:hover{
  background:rgba(19,35,29,.05);
  border-color:rgba(19,35,29,.35);
  color:var(--ink);
  transform:translateY(-1px);
}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--copper-deep);
}
.link-arrow svg{
  width:15px;height:15px;fill:none;stroke:currentColor;
  stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;
  transition:transform .22s var(--ease);
}
.link-arrow:hover svg{transform:translateX(4px);}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  background:var(--paper);
  padding:72px 0 64px;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:radial-gradient(rgba(19,35,29,.05) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.7;
  pointer-events:none;
}
.page-hero .container-x{position:relative;}

.crumb{
  display:flex;align-items:center;gap:8px;
  font-size:12px;color:var(--muted);
  margin-bottom:26px;
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--copper-deep);}
.crumb span.sep{opacity:.6;}

.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px;}
.tag-pill{
  display:inline-flex;align-items:center;
  height:28px;padding:0 13px;
  border-radius:999px;
  border:1px solid rgba(184,107,63,.35);
  background:rgba(184,107,63,.07);
  color:var(--copper-deep);
  font-size:12px;font-weight:600;letter-spacing:.04em;
}
.tag-mint{
  border-color:rgba(19,35,29,.12);
  background:var(--mint);
  color:var(--ink-2);
}

.page-hero h1{
  font-size:clamp(32px,4.4vw,54px);
  font-weight:700;
  line-height:1.16;
  margin-bottom:20px;
}
.page-hero h1 em{
  font-style:normal;
  color:var(--copper-deep);
}
.hero-lead{
  font-size:17px;
  color:var(--muted);
  max-width:560px;
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:26px;
  padding-top:22px;
  border-top:1px solid var(--line);
}
.hero-meta div{display:flex;flex-direction:column;gap:2px;}
.hero-meta dt{
  font-size:12px;color:var(--muted);letter-spacing:.08em;
}
.hero-meta dd{
  margin:0;
  font-family:var(--serif);
  font-size:20px;font-weight:700;
  color:var(--ink);
  font-variant-numeric:tabular-nums;
}

.hero-figure{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--paper-2);
  box-shadow:var(--shadow-1);
}
.hero-figure img{
  width:100%;height:100%;
  object-fit:cover;
  aspect-ratio:4/5;
}
.hero-figure figcaption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:20px 22px;
  background:linear-gradient(180deg,rgba(19,35,29,0) 0%,rgba(19,35,29,.82) 100%);
  color:rgba(255,255,255,.9);
  font-size:13px;
  line-height:1.7;
}
.hero-figure figcaption strong{
  display:block;
  font-family:var(--serif);
  font-size:16px;
  color:#fff;
  margin-bottom:2px;
}

/* ============ 板块通用 ============ */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-white{background:var(--white);}
.section-paper{background:var(--paper);}
.section-dark{background:var(--ink);color:rgba(255,255,255,.82);}
.section-dark h2,.section-dark h3{color:#fff;}

.sec-head{margin-bottom:48px;max-width:720px;}
.sec-label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;color:var(--copper-deep);
  font-weight:700;margin-bottom:14px;
}
.sec-label::before{
  content:"";width:22px;height:1px;background:var(--copper);
}
.sec-head h2{
  font-size:clamp(26px,3vw,36px);
  font-weight:700;line-height:1.28;
  margin-bottom:14px;
}
.sec-head p{color:var(--muted);font-size:16px;margin:0;}

/* ============ 主体：粘性摘要 + 时间线 ============ */
.digest-card{
  position:sticky;
  top:96px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px 24px;
  box-shadow:var(--shadow-1);
}
.digest-card h2{
  font-size:18px;
  margin-bottom:16px;
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
}
.digest-list{margin-bottom:20px;}
.digest-list li{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  gap:12px;
  padding:10px 0;
  border-bottom:1px dashed var(--line);
  font-size:14px;
}
.digest-list li:last-child{border-bottom:0;}
.digest-list .k{color:var(--muted);}
.digest-list .v{
  font-family:var(--serif);
  font-weight:700;
  color:var(--ink);
  font-variant-numeric:tabular-nums;
  text-align:right;
}
.digest-note{
  background:var(--mint);
  border-radius:var(--radius-sm);
  padding:14px 16px;
  font-size:13px;
  line-height:1.75;
  color:var(--ink-2);
  margin-bottom:18px;
}
.digest-jump{
  border-top:1px solid var(--line);
  padding-top:16px;
}
.digest-jump h3{
  font-family:var(--sans);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--muted);
  margin-bottom:10px;
  font-weight:700;
}
.digest-jump a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:8px 0;
  font-size:14px;
  color:var(--ink-2);
}
.digest-jump a::before{
  content:"";
  width:14px;height:1px;
  background:var(--copper);
  flex-shrink:0;
}
.digest-jump a:hover{color:var(--copper-deep);}

.timeline{
  position:relative;
  padding-left:28px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:5px;top:10px;bottom:10px;
  width:2px;
  background:var(--mint);
  border-radius:2px;
}
.tl-item{
  position:relative;
  padding-bottom:38px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";
  position:absolute;
  left:-28px;
  top:8px;
  width:12px;height:12px;
  border-radius:50%;
  background:var(--copper);
  border:2px solid var(--white);
  box-shadow:0 0 0 2px var(--mint);
}
.tl-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px 26px;
  transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.tl-card:hover{
  border-color:rgba(184,107,63,.5);
  transform:translateY(-3px);
  box-shadow:var(--shadow-2);
}
.tl-top{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-bottom:12px;
}
.tl-date{
  display:inline-flex;align-items:center;
  height:24px;padding:0 11px;
  border-radius:999px;
  background:var(--mint);
  color:var(--ink-2);
  font-size:12px;font-weight:600;
  font-variant-numeric:tabular-nums;
  letter-spacing:.04em;
}
.tl-ver{
  font-family:var(--serif);
  font-size:19px;
  font-weight:700;
  color:var(--ink);
  font-variant-numeric:tabular-nums;
}
.badge-current{
  display:inline-flex;align-items:center;gap:5px;
  height:24px;padding:0 11px;
  border-radius:999px;
  background:rgba(184,107,63,.1);
  border:1px solid rgba(184,107,63,.4);
  color:var(--copper-deep);
  font-size:12px;font-weight:700;
}
.badge-current::before{
  content:"";width:5px;height:5px;border-radius:50%;background:var(--copper);
}
.tl-card h3{
  font-size:17px;
  font-weight:600;
  font-family:var(--sans);
  margin-bottom:12px;
  color:var(--ink);
}
.tl-changes li{
  position:relative;
  padding-left:16px;
  font-size:15px;
  line-height:1.85;
  color:#3C4A44;
  margin-bottom:8px;
}
.tl-changes li:last-child{margin-bottom:0;}
.tl-changes li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:6px;height:6px;
  border-radius:2px;
  background:var(--copper);
  opacity:.75;
}
.tl-more{
  margin-top:14px;
  padding-top:14px;
  border-top:1px dashed var(--line);
}

/* ============ 表格 ============ */
.table-wrap{
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--white);
}
.tbl{
  width:100%;
  margin:0;
  border-collapse:collapse;
  font-size:14.5px;
}
.tbl thead th{
  background:var(--mint);
  color:var(--ink-2);
  font-family:var(--sans);
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  padding:14px 16px;
  border-bottom:1px solid rgba(19,35,29,.1);
  white-space:nowrap;
}
.tbl tbody td{
  padding:14px 16px;
  border-bottom:1px solid var(--line);
  color:#3C4A44;
  vertical-align:top;
}
.tbl tbody tr:last-child td{border-bottom:0;}
.tbl tbody tr:hover td{background:var(--paper);}
.tbl td strong{color:var(--ink);font-weight:600;}

/* ============ 提示条 ============ */
.callout{
  display:flex;
  gap:14px;
  padding:18px 20px;
  border-radius:var(--radius);
  background:var(--mint);
  border:1px solid rgba(19,35,29,.08);
  margin-top:26px;
}
.callout svg{
  width:20px;height:20px;flex-shrink:0;margin-top:3px;
  fill:none;stroke:var(--ink-2);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;
}
.callout p{margin:0;font-size:14px;line-height:1.8;color:var(--ink-2);}

/* ============ 要点卡网格 ============ */
.note-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
}
.note-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px;
  transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.note-card:hover{
  border-color:rgba(184,107,63,.45);
  transform:translateY(-3px);
  box-shadow:var(--shadow-2);
}
.note-card .idx{
  font-family:var(--serif);
  font-size:13px;
  font-weight:700;
  color:var(--copper);
  letter-spacing:.1em;
  display:block;
  margin-bottom:10px;
  font-variant-numeric:tabular-nums;
}
.note-card h3{font-size:17px;font-family:var(--sans);font-weight:600;margin-bottom:8px;}
.note-card p{font-size:14px;color:var(--muted);margin:0;line-height:1.8;}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:20px;
  padding:20px 0;
  cursor:pointer;
  list-style:none;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  transition:color .22s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--copper-deep);}
.faq-item summary .plus{
  position:relative;
  width:20px;height:20px;
  flex-shrink:0;
  margin-top:5px;
}
.faq-item summary .plus::before,
.faq-item summary .plus::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--copper);
  border-radius:2px;
  transition:transform .22s var(--ease);
}
.faq-item summary .plus::before{
  width:14px;height:2px;
  transform:translate(-50%,-50%);
}
.faq-item summary .plus::after{
  width:2px;height:14px;
  transform:translate(-50%,-50%);
}
.faq-item[open] summary .plus::after{transform:translate(-50%,-50%) scaleY(0);}
.faq-answer{
  padding:0 0 22px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--muted);
  max-width:720px;
}
.faq-answer strong{color:var(--ink);font-weight:600;}

/* ============ CTA 带 ============ */
.cta-band{
  background:var(--ink);
  color:rgba(255,255,255,.82);
  padding:56px 0;
}
.cta-band .inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.cta-band h2{
  color:#fff;
  font-size:clamp(22px,2.4vw,30px);
  margin-bottom:6px;
}
.cta-band p{margin:0;font-size:14.5px;color:rgba(255,255,255,.65);}
.btn-light{
  display:inline-flex;align-items:center;justify-content:center;
  height:46px;padding:0 24px;
  border-radius:999px;
  background:var(--copper);
  color:#fff;font-size:15px;font-weight:600;
  border:1px solid var(--copper);
  transition:background .22s var(--ease),transform .22s var(--ease);
}
.btn-light:hover{background:var(--copper-deep);color:#fff;transform:translateY(-1px);}
.btn-outline-light-x{
  display:inline-flex;align-items:center;justify-content:center;
  height:46px;padding:0 24px;
  border-radius:999px;
  background:transparent;
  color:#fff;
  border:1px solid rgba(255,255,255,.3);
  font-size:15px;font-weight:600;
  transition:background .22s var(--ease),border-color .22s var(--ease);
}
.btn-outline-light-x:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.6);color:#fff;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink);
  color:rgba(255,255,255,.72);
  padding:64px 0 24px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  margin-bottom:16px;
}
.footer-brand .brand-mark{
  border-color:rgba(255,255,255,.22);
  background:rgba(255,255,255,.06);
}
.footer-brand .brand-mark svg{stroke:var(--copper);}
.footer-brand .brand-text{color:#fff;font-size:16px;}
.footer-about{
  font-size:13.5px;
  line-height:1.85;
  color:rgba(255,255,255,.58);
  margin:0;
  max-width:320px;
}
.footer-col h4{
  font-family:var(--sans);
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  color:rgba(255,255,255,.45);
  margin-bottom:16px;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{
  font-size:14px;
  color:rgba(255,255,255,.72);
}
.footer-col ul li a:hover{
  color:#fff;
  text-decoration:underline;
  text-underline-offset:3px;
}
.footer-col ul li p{
  font-size:13.5px;
  line-height:1.8;
  color:rgba(255,255,255,.5);
  margin:0;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding-top:20px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  font-size:12.5px;
  color:rgba(255,255,255,.45);
}
.to-top{
  display:inline-flex;align-items:center;gap:6px;
  background:transparent;border:0;
  color:rgba(255,255,255,.6);
  font-size:12.5px;cursor:pointer;
  padding:6px 2px;
  transition:color .22s var(--ease);
}
.to-top svg{
  width:14px;height:14px;fill:none;stroke:currentColor;
  stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;
}
.to-top:hover{color:#fff;}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;
  right:28px;
  bottom:28px;
  z-index:1040;
  display:flex;
  gap:10px;
  opacity:0;
  transform:translateY(14px);
  pointer-events:none;
  transition:opacity .22s var(--ease),transform .22s var(--ease);
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta .btn-main{
  height:44px;padding:0 20px;font-size:14px;
  box-shadow:0 12px 30px -14px rgba(19,35,29,.6);
}
.float-cta .f-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 18px;
  border-radius:999px;
  background:var(--white);
  border:1px solid var(--line);
  color:var(--ink);
  font-size:14px;font-weight:600;
  box-shadow:0 12px 30px -18px rgba(19,35,29,.5);
}
.float-cta .f-ghost:hover{border-color:var(--copper);color:var(--copper-deep);}

/* ============ 进入动画 ============ */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
.reveal.in{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
  }
  .reveal{opacity:1;transform:none;}
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .nav-link-x{font-size:14px;padding:8px 8px;}
  .nav-search input{width:160px;}
}

@media (max-width:991.98px){
  .nav-links,.nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{min-height:60px;}
  .page-hero{padding:52px 0 48px;}
  .section{padding:76px 0;}
  .hero-figure img{aspect-ratio:16/10;}
  .hero-figure{margin-top:36px;}
  .digest-card{position:static;margin-bottom:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}

@media (max-width:767.98px){
  .page-hero{padding:44px 0 40px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .sec-head{margin-bottom:32px;}
  .note-grid{grid-template-columns:1fr;}
  .hero-meta{gap:20px;}
  .hero-meta dd{font-size:18px;}
  .tl-card{padding:20px;}
  .timeline{padding-left:22px;}
  .tl-item::before{left:-22px;}
  .timeline::before{left:4px;}
  .cta-band .inner{flex-direction:column;align-items:flex-start;}
  .float-cta{
    right:0;left:0;bottom:0;
    padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    background:rgba(247,243,236,.96);
    border-top:1px solid var(--line);
    gap:10px;
    transform:translateY(110%);
  }
  .float-cta.show{transform:translateY(0);}
  .float-cta .btn-main,
  .float-cta .f-ghost{flex:1;height:48px;}
  body{padding-bottom:72px;}
}

@media (max-width:575.98px){
  .container-x{padding-left:18px;padding-right:18px;}
  .page-hero h1{font-size:30px;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn-main,
  .hero-actions .btn-ghost{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .faq-item summary{font-size:16px;}
  .tl-top{gap:8px;}
  .tl-ver{font-size:17px;}
}

@media print{
  .site-header,.float-cta,.to-top{display:none !important;}
  body{background:#fff;padding-bottom:0;}
}

/* roulang page: category5 */
:root{
  --ink:#13231D;
  --ink-2:#244037;
  --paper:#F7F3EC;
  --paper-2:#EDE7DC;
  --white:#FFFFFF;
  --copper:#B86B3F;
  --copper-deep:#8F4A28;
  --mint:#DCE8E1;
  --line:#E1DACD;
  --muted:#68736D;
  --ok:#2E7D5B;
  --warn:#B07A22;
  --radius:10px;
  --radius-lg:16px;
  --shadow:0 1px 2px rgba(19,35,29,.04);
  --shadow-hover:0 18px 40px -26px rgba(19,35,29,.28);
  --ease:cubic-bezier(.2,.7,.2,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--paper);
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--ink-2);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--copper-deep)}
h1,h2,h3,h4{margin:0;font-family:var(--serif);color:var(--ink);letter-spacing:.01em;line-height:1.25}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--copper);outline-offset:3px;border-radius:6px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 18px;z-index:2000}
.skip-link:focus{left:12px;top:12px;color:#fff}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.narrow-x{max-width:760px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 24px -22px rgba(19,35,29,.65)}
.header-inner{display:flex;align-items:center;gap:18px;height:68px}
.brand{display:flex;align-items:center;gap:9px;flex:0 0 auto}
.brand-mark{width:28px;height:28px;display:grid;place-items:center;color:var(--copper);flex:0 0 auto}
.brand-mark svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.brand-text{font-family:var(--serif);font-weight:700;font-size:15px;color:var(--ink);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:24px;margin-left:6px}
.nav-link-x{position:relative;display:inline-block;font-size:15px;color:rgba(19,35,29,.72);padding:6px 0;white-space:nowrap}
.nav-link-x::after{content:"";position:absolute;left:0;bottom:-1px;width:0;height:2px;background:var(--copper);transition:width .22s var(--ease)}
.nav-link-x:hover{color:var(--ink)}
.nav-link-x:hover::after{width:100%}
.nav-link-x.active{color:var(--ink-2);font-weight:600}
.nav-link-x.active::after{width:100%}
.header-tools{display:flex;align-items:center;gap:12px;margin-left:auto}
.search-mini{display:flex}
.search-mini input{
  width:200px;height:38px;border:1px solid transparent;border-radius:999px;
  background:var(--paper);color:var(--ink);font-size:14px;padding:0 16px;
  transition:background .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.search-mini input::placeholder{color:var(--muted)}
.search-mini input:focus{outline:none;background:var(--white);border-color:var(--copper);box-shadow:0 0 0 3px rgba(184,107,63,.16)}
.btn-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 20px;border-radius:999px;border:1px solid var(--ink);
  background:var(--ink);color:#fff;font-size:14px;font-weight:600;white-space:nowrap;
  transition:background .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn-cta:hover{background:var(--copper-deep);border-color:var(--copper-deep);color:#fff;transform:translateY(-1px)}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:var(--white);color:var(--ink);align-items:center;justify-content:center;
}
.nav-toggle svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round}

/* ---------- page hero ---------- */
.page-hero{position:relative;background:var(--ink);color:var(--paper);padding:64px 0 68px;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
  opacity:.2;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(247,243,236,.10) 1px,transparent 1px);
  background-size:22px 22px;opacity:.35;pointer-events:none;
}
.page-hero .container-x{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:rgba(247,243,236,.62);margin-bottom:26px}
.crumb a{color:rgba(247,243,236,.72)}
.crumb a:hover{color:#fff}
.crumb span.sep{opacity:.5}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(0,.85fr);gap:48px;align-items:start}
.hero-label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;color:var(--mint);
  border:1px solid rgba(220,232,225,.32);border-radius:999px;padding:5px 14px;margin-bottom:20px;
}
.hero-label i{width:5px;height:5px;border-radius:50%;background:var(--copper);display:block}
.page-hero h1{
  font-size:clamp(30px,4.4vw,50px);
  font-weight:700;line-height:1.16;color:#FBF8F1;letter-spacing:.015em;
}
.page-hero h1 em{font-style:normal;color:var(--mint);display:block;font-size:.62em;margin-top:12px;letter-spacing:.02em}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:rgba(247,243,236,.82);max-width:560px}
.search-hero{margin-top:30px;display:flex;gap:10px;flex-wrap:wrap;max-width:640px}
.search-hero .field{
  position:relative;flex:1 1 320px;display:flex;align-items:center;
  background:var(--white);border-radius:999px;border:1px solid rgba(247,243,236,.45);
  padding:0 6px 0 18px;min-height:54px;
}
.search-hero .field svg{width:19px;height:19px;fill:none;stroke:var(--muted);stroke-width:1.6;stroke-linecap:round;flex:0 0 auto}
.search-hero input{
  flex:1 1 auto;border:0;background:transparent;height:52px;padding:0 12px;
  font-size:15px;color:var(--ink);
}
.search-hero input:focus{outline:none}
.search-hero button{
  height:44px;padding:0 24px;border:0;border-radius:999px;background:var(--copper-deep);color:#fff;
  font-size:15px;font-weight:600;transition:background .22s var(--ease),transform .22s var(--ease);
}
.search-hero button:hover{background:var(--copper);transform:translateY(-1px)}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.chip{
  border:1px solid rgba(247,243,236,.3);background:transparent;color:rgba(247,243,236,.82);
  font-size:13px;padding:7px 16px;border-radius:999px;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.chip:hover{background:rgba(247,243,236,.12);color:#fff}
.chip.is-active{background:var(--mint);border-color:var(--mint);color:var(--ink);font-weight:600}
.hero-side{
  background:rgba(247,243,236,.07);
  border:1px solid rgba(247,243,236,.2);
  border-radius:var(--radius-lg);
  padding:26px 24px;
  backdrop-filter:blur(2px);
}
.hero-side h2{font-size:17px;color:#FBF8F1;margin-bottom:6px}
.hero-side .side-note{font-size:12.5px;color:rgba(247,243,236,.62);margin-bottom:18px}
.side-list li{display:flex;gap:12px;padding:12px 0;border-top:1px solid rgba(247,243,236,.14);font-size:14px;color:rgba(247,243,236,.86);line-height:1.65}
.side-list li:first-child{border-top:0;padding-top:0}
.side-list .num{font-family:var(--serif);font-size:18px;color:var(--copper);line-height:1.2;flex:0 0 26px}
.side-list b{display:block;color:#FBF8F1;font-weight:600;font-size:14.5px}
.hero-side .side-foot{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:13px;color:var(--mint)}
.hero-side .side-foot svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}

/* ---------- help body ---------- */
.section-pad{padding:104px 0}
.section-head{max-width:720px;margin-bottom:44px}
.section-head .kicker{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.16em;color:var(--copper-deep);margin-bottom:14px}
.section-head .kicker::before{content:"";width:22px;height:1px;background:var(--copper)}
.section-head h2{font-size:clamp(26px,3.1vw,38px);font-weight:700}
.section-head p{margin-top:14px;color:var(--muted);font-size:15.5px;line-height:1.85}
.help-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:40px;align-items:start}
.faq-group{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px 28px 12px;margin-bottom:24px;box-shadow:var(--shadow);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-group:hover{border-color:rgba(184,107,63,.4);box-shadow:var(--shadow-hover)}
.group-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:6px}
.group-head h2{font-size:21px;font-weight:700;position:relative;padding-left:14px}
.group-head h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;background:var(--copper);border-radius:2px}
.group-head .count{font-size:12px;color:var(--muted);background:var(--paper-2);border-radius:999px;padding:3px 10px}
.faq-accordion .accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent}
.faq-accordion .accordion-item:last-child{border-bottom:0}
.faq-accordion .accordion-button{
  position:relative;
  background:transparent;box-shadow:none;color:var(--ink);
  font-family:var(--sans);font-size:16.5px;font-weight:600;line-height:1.6;
  padding:19px 46px 19px 0;border-radius:0;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--copper-deep);background:transparent;box-shadow:none}
.faq-accordion .accordion-button:focus{box-shadow:none;border-color:transparent;outline:2px solid var(--copper);outline-offset:2px}
.faq-accordion .accordion-button::after{display:none}
.faq-accordion .accordion-button::before{
  content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);
  font-family:var(--sans);font-size:22px;font-weight:400;color:var(--copper);line-height:1;
  transition:transform .22s var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed)::before{transform:translateY(-50%) rotate(45deg)}
.faq-accordion .accordion-body{
  padding:0 46px 20px 0;font-size:15.5px;line-height:1.9;color:var(--muted);
}
.faq-accordion .accordion-body b{color:var(--ink-2);font-weight:600}
.faq-accordion .accordion-body ul{margin-top:8px}
.faq-accordion .accordion-body li{position:relative;padding-left:16px;margin-bottom:4px}
.faq-accordion .accordion-body li::before{content:"";position:absolute;left:0;top:11px;width:5px;height:5px;background:var(--copper);border-radius:1px}
.faq-empty{
  border:1px dashed var(--line);border-radius:12px;padding:48px 24px;text-align:center;
  color:var(--muted);background:var(--white);
}
.faq-empty svg{width:30px;height:30px;margin:0 auto 12px;fill:none;stroke:var(--copper);stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round}
.faq-empty p{font-size:14px;line-height:1.85}
.faq-empty p + p{margin-top:6px;font-size:13px;color:var(--muted)}

/* aside */
.help-aside{position:sticky;top:92px}
.contact-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px;box-shadow:var(--shadow);
}
.contact-card .badge-lite{
  display:inline-block;font-size:11.5px;letter-spacing:.1em;color:var(--ink-2);
  background:var(--mint);border-radius:999px;padding:4px 12px;margin-bottom:14px;
}
.contact-card h2{font-size:18px;font-weight:700;line-height:1.45}
.contact-card p{margin-top:10px;font-size:13.5px;color:var(--muted);line-height:1.85}
.contact-list{margin-top:16px}
.contact-list li{display:flex;gap:8px;font-size:13px;color:var(--ink-2);padding:7px 0;border-top:1px solid var(--line);line-height:1.7}
.contact-list li:first-child{border-top:0}
.contact-list li span{color:var(--copper);flex:0 0 auto}
.btn-primary-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  width:100%;height:46px;padding:0 22px;border-radius:999px;border:0;
  background:var(--copper-deep);color:#fff;font-size:15px;font-weight:600;
  transition:background .22s var(--ease),transform .22s var(--ease);
}
.btn-primary-x:hover{background:var(--copper);color:#fff;transform:translateY(-1px)}
.btn-ghost-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:999px;
  border:1px solid rgba(19,35,29,.2);background:transparent;color:var(--ink);
  font-size:15px;font-weight:600;
  transition:background .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn-ghost-x:hover{background:rgba(19,35,29,.05);border-color:rgba(19,35,29,.4);color:var(--ink);transform:translateY(-1px)}
.btn-ghost-x.on-dark{border-color:rgba(247,243,236,.32);color:#FBF8F1}
.btn-ghost-x.on-dark:hover{background:rgba(247,243,236,.12);color:#fff}
.contact-card .btn-primary-x{margin-top:18px}
.contact-card .tip-line{margin-top:12px;font-size:12px;color:var(--muted);text-align:center}

/* ---------- quick cards ---------- */
.quick-section{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.quick-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.quick-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.quick-card:hover{transform:translateY(-3px);border-color:rgba(184,107,63,.45);box-shadow:var(--shadow-hover)}
.quick-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--paper-2)}
.quick-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.quick-card:hover .thumb img{transform:scale(1.02)}
.quick-card .body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1 1 auto}
.quick-card .tagline{font-size:11.5px;letter-spacing:.12em;color:var(--copper-deep);margin-bottom:8px}
.quick-card h3{font-size:18px;font-weight:700;line-height:1.5}
.quick-card p{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.85;flex:1 1 auto}
.link-arrow{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14px;font-weight:600;color:var(--ink-2)}
.link-arrow svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .22s var(--ease)}
.link-arrow:hover{color:var(--copper-deep)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ---------- tip band ---------- */
.tip-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-top:1px solid var(--line)}
.tip-item{padding:30px 28px 30px 0;border-bottom:1px solid var(--line)}
.tip-item + .tip-item{padding-left:28px;border-left:1px solid var(--line)}
.tip-item .idx{font-family:var(--serif);font-size:15px;color:var(--copper);letter-spacing:.08em}
.tip-item h3{font-size:17px;font-weight:700;margin-top:8px}
.tip-item p{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.85}

/* ---------- cta band ---------- */
.cta-band{background:var(--ink-2);color:var(--paper);padding:56px 0}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);color:#FBF8F1;font-weight:700}
.cta-inner p{margin-top:8px;font-size:14.5px;color:rgba(247,243,236,.72)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- float cta ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:1040;
  display:flex;flex-direction:column;gap:8px;
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .22s var(--ease),transform .22s var(--ease);
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta a{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:999px;
  background:var(--ink);color:#fff;font-size:14.5px;font-weight:600;
  box-shadow:0 12px 28px -18px rgba(19,35,29,.7);
  transition:background .22s var(--ease),transform .22s var(--ease);
}
.float-cta a:hover{background:var(--copper-deep);color:#fff;transform:translateY(-1px)}
.float-cta a.secondary{background:var(--white);color:var(--ink);border:1px solid var(--line)}
.float-cta a.secondary:hover{background:var(--paper-2);color:var(--ink)}
.float-cta svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(247,243,236,.78);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:52px}
.footer-brand{display:flex;align-items:center;gap:9px;margin-bottom:16px}
.footer-brand .brand-mark{color:var(--copper)}
.footer-brand .brand-text{font-family:var(--serif);font-size:16px;font-weight:700;color:#FBF8F1}
.footer-about{font-size:14px;line-height:1.9;color:rgba(247,243,236,.68);max-width:360px}
.footer-col h4{font-size:14px;font-weight:600;color:#FBF8F1;margin-bottom:16px;letter-spacing:.04em;font-family:var(--sans)}
.footer-col ul li{margin-bottom:10px}
.footer-col a,.footer-col p{font-size:14px;color:rgba(247,243,236,.68);line-height:1.8}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  border-top:1px solid rgba(247,243,236,.14);
  padding:22px 0 26px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:rgba(247,243,236,.56);
}
.to-top{
  display:inline-flex;align-items:center;gap:6px;background:transparent;border:0;
  color:rgba(247,243,236,.72);font-size:13px;padding:6px 0;
}
.to-top:hover{color:#fff}
.to-top svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .nav-links{gap:16px}
  .nav-link-x{font-size:14px}
  .search-mini input{width:160px}
  .hero-grid{gap:34px}
}
@media (max-width:991.98px){
  .header-inner{height:60px}
  .nav-toggle{display:inline-flex}
  .search-mini{display:none}
  .nav-links{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--white);border-bottom:1px solid var(--line);
    box-shadow:0 18px 30px -24px rgba(19,35,29,.6);
    padding:8px 24px 18px;margin-left:0;
    display:none;
  }
  .nav-links.is-open{display:flex}
  .nav-link-x{padding:13px 0;border-bottom:1px solid var(--line);font-size:15px}
  .nav-link-x::after{display:none}
  .nav-link-x.active{color:var(--copper-deep)}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .page-hero{padding:52px 0 56px}
  .section-pad{padding:80px 0}
  .help-layout{grid-template-columns:1fr;gap:32px}
  .help-aside{position:static}
  .quick-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .tip-grid{grid-template-columns:1fr}
  .tip-item,.tip-item + .tip-item{padding:24px 0;border-left:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767.98px){
  .page-hero{padding:42px 0 46px}
  .section-pad{padding:56px 0}
  .quick-grid{grid-template-columns:1fr}
  .faq-group{padding:22px 20px 8px}
  .faq-accordion .accordion-button{font-size:15.5px;padding:17px 40px 17px 0}
  .faq-accordion .accordion-body{padding-right:8px;font-size:15px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions a{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .site-footer{padding-top:52px}
  body{padding-bottom:76px}
  .float-cta{
    left:0;right:0;bottom:0;flex-direction:row;gap:10px;
    padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    background:rgba(247,243,236,.96);
    border-top:1px solid var(--line);
    opacity:1;transform:none;pointer-events:auto;
  }
  .float-cta a{flex:1 1 0;height:46px;font-size:14.5px;box-shadow:none}
}
@media (max-width:575.98px){
  .container-x{padding:0 18px}
  .page-hero h1{font-size:clamp(26px,7vw,32px)}
  .hero-sub{font-size:15.5px}
  .search-hero .field{min-height:50px;padding-left:14px}
  .search-hero input{height:48px;font-size:14px}
  .search-hero button{height:42px;padding:0 18px;font-size:14px}
  .chip{font-size:12.5px;padding:6px 13px}
  .brand-text{font-size:13.5px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}
@media print{
  .site-header,.float-cta,.help-aside,.to-top{display:none !important}
  body{background:#fff;padding-bottom:0}
}