/* roulang page: index */
:root{
  --brand:#F2621F;
  --brand-deep:#C1440E;
  --accent:#C6F24E;
  --ink:#14231F;
  --ink-soft:#4A5A55;
  --ink-mute:#7C8A85;
  --deep:#0E1F1A;
  --bg:#FAF6F0;
  --surface:#FFFFFF;
  --line:#E8E1D8;
  --line-soft:#F1EBE3;
  --danger:#D93025;
  --r-xs:8px;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,35,31,.06);
  --sh-2:0 8px 24px -8px rgba(20,35,31,.14);
  --sh-3:0 18px 40px -12px rgba(193,68,14,.22);
  --container:1200px;
  --header-h:70px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16.5px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  padding-bottom:76px;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.container-wide{width:100%;max-width:1320px;margin:0 auto;padding:0 24px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:800;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-1);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 22px -12px rgba(20,35,31,.28);}
.nav-wrap{
  display:flex;align-items:center;gap:22px;
  height:var(--header-h);
}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-deep) 100%);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px -8px rgba(193,68,14,.7);
}
.brand-mark span{
  display:block;width:14px;height:14px;border-radius:4px;
  background:#fff;box-shadow:0 0 0 3px rgba(255,255,255,.35);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-main{font-size:16.5px;font-weight:800;letter-spacing:.01em;color:var(--ink);white-space:nowrap;}
.brand-sub{font-size:11px;letter-spacing:.14em;color:var(--ink-mute);text-transform:uppercase;}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav-menu a{
  position:relative;display:inline-block;
  padding:9px 14px;border-radius:var(--r-sm);
  font-size:15px;font-weight:500;color:var(--ink-soft);
  transition:color .2s ease,background .2s ease;
}
.nav-menu a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .24s ease;
}
.nav-menu a:hover{color:var(--ink);background:var(--line-soft);}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.is-active{color:var(--brand-deep);font-weight:700;}
.nav-menu a.is-active::before{
  content:"";position:absolute;left:3px;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--brand);
}
.nav-menu a.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:220px;height:42px;padding:0 14px;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r-pill);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.nav-search:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(242,98,31,.12);}
.nav-search svg{flex:0 0 auto;width:16px;height:16px;stroke:var(--ink-mute);}
.nav-search input{
  border:0;background:transparent;outline:none;width:100%;
  font-size:14px;color:var(--ink);
}
.nav-search input::placeholder{color:var(--ink-mute);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:0 22px;height:44px;border:1px solid transparent;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,background .2s ease,color .2s ease,box-shadow .22s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand-deep);color:#fff;box-shadow:0 8px 20px -10px rgba(193,68,14,.7);}
.btn-primary:hover{background:#A53809;transform:translateY(-1px);box-shadow:0 14px 28px -12px rgba(193,68,14,.6);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55);}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-1px);}
.btn-outline{background:#fff;color:var(--brand-deep);border-color:var(--brand);}
.btn-outline:hover{background:var(--brand);color:#fff;transform:translateY(-1px);}
.btn-sm{height:38px;font-size:14px;padding:0 18px;}
.btn-block{width:100%;}
.hamburger{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .22s ease,opacity .22s ease;}
.hamburger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.hamburger.is-open span:nth-child(2){opacity:0;}
.hamburger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- Mobile drawer ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:1000;background:#fff;
  transform:translateY(-101%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  overflow-y:auto;padding:20px 24px 40px;
}
.mobile-drawer.is-open{transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-close{
  width:42px;height:42px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:#fff;font-size:20px;line-height:1;color:var(--ink);cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:24px;}
.drawer-nav a{
  padding:16px 18px;border-radius:var(--r-md);border:1px solid var(--line);
  font-size:17px;font-weight:600;color:var(--ink);background:var(--bg);
}
.drawer-nav a.is-active{background:#FFF1E8;border-color:var(--brand);color:var(--brand-deep);}
.drawer-search{margin-bottom:18px;width:100%;}
.drawer-cta{display:flex;flex-direction:column;gap:12px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  min-height:600px;display:flex;align-items:center;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  color:#fff;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(14,31,26,.92) 0%,rgba(14,31,26,.74) 46%,rgba(14,31,26,.5) 100%);
}
.hero .container{position:relative;z-index:2;}
.hero-grid{
  display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);
  gap:56px;align-items:center;padding:88px 0;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:var(--r-pill);
  background:var(--accent);color:#14231F;
  font-size:13px;font-weight:700;letter-spacing:.04em;
}
.hero h1{
  margin-top:20px;
  font-size:clamp(30px,4vw,50px);
  line-height:1.24;font-weight:800;letter-spacing:-.01em;
  max-width:15em;
}
.hero-sub{
  margin-top:16px;
  font-size:16.5px;line-height:1.85;color:rgba(255,255,255,.86);
  max-width:32em;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:40px;margin-top:44px;
  padding-top:28px;border-top:1px solid rgba(255,255,255,.18);
}
.hero-stat b{display:block;font-size:28px;font-weight:800;color:var(--accent);letter-spacing:.01em;line-height:1.2;}
.hero-stat span{display:block;margin-top:4px;font-size:12.5px;letter-spacing:.04em;color:rgba(255,255,255,.72);}
.hero-card{
  background:#fff;color:var(--ink);border-radius:20px;padding:26px;
  box-shadow:0 30px 60px -24px rgba(0,0,0,.5);
}
.hero-card h2{font-size:17px;font-weight:800;margin-bottom:6px;}
.hero-card p{font-size:13.5px;color:var(--ink-soft);line-height:1.7;}
.hero-links{margin-top:18px;display:flex;flex-direction:column;}
.hero-links a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:14px 0;border-top:1px solid var(--line-soft);
  font-size:15px;font-weight:600;color:var(--ink);
  transition:color .2s ease,padding-left .2s ease;
}
.hero-links a:last-of-type{border-bottom:1px solid var(--line-soft);}
.hero-links a:hover{color:var(--brand-deep);padding-left:4px;}
.hero-links a em{font-style:normal;color:var(--brand);font-size:13px;}
.hero-card .btn{margin-top:18px;}

/* ---------- Section basics ---------- */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-dark{background:var(--deep);color:#fff;}
.section-alt{background:#fff;}
.eyebrow{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.16em;
  color:var(--brand);text-transform:uppercase;margin-bottom:12px;
}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:44px;flex-wrap:wrap;
}
.section-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;font-weight:800;letter-spacing:-.01em;}
.section-head p{margin-top:10px;font-size:15.5px;color:var(--ink-soft);max-width:46em;}
.section-dark .section-head p{color:rgba(255,255,255,.72);}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--brand-deep);
  padding-bottom:2px;border-bottom:2px solid transparent;
  transition:border-color .22s ease,gap .22s ease;
}
.text-link:hover{border-color:var(--brand);gap:10px;}

/* ---------- Feature asymmetric ---------- */
.feature-grid{
  display:grid;
  grid-template-columns:5fr 3.5fr 3.5fr;
  gap:var(--gap);align-items:start;
}
.feature-card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);padding:28px;overflow:hidden;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.feature-card::before{
  content:"";position:absolute;left:0;top:0;height:3px;width:100%;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .28s ease;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:#F3D5C4;}
.feature-card:hover::before{transform:scaleX(1);}
.feature-card h3{font-size:20px;font-weight:800;line-height:1.4;margin-bottom:12px;}
.feature-card p{font-size:15px;color:var(--ink-soft);}
.feature-card.tall{padding:32px;}
.feature-card.tall h3{font-size:22px;}
.feature-icon{
  width:48px;height:48px;border-radius:14px;
  background:#FFF1E8;color:var(--brand-deep);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:17px;margin-bottom:20px;
}
.feature-card.tall .feature-icon{width:56px;height:56px;border-radius:18px;font-size:19px;}
.feature-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.feature-list li{position:relative;padding-left:18px;font-size:14.5px;color:var(--ink-soft);}
.feature-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--accent);
}
.feature-offset-1{margin-top:32px;}
.feature-offset-2{margin-top:64px;}

/* ---------- Scene blocks ---------- */
.scene{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:88px 0;
}
.scene + .scene{border-top:1px solid var(--line-soft);}
.scene-media{
  border-radius:20px;overflow:hidden;
  border:2px solid #FFF4EC;box-shadow:var(--sh-2);
}
.scene-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;}
.scene-tag{
  display:inline-block;font-size:12.5px;font-weight:800;letter-spacing:.14em;
  color:var(--brand);margin-bottom:14px;
}
.scene h3{font-size:clamp(21px,2.2vw,27px);font-weight:800;line-height:1.4;margin-bottom:16px;}
.scene p{font-size:15.5px;color:var(--ink-soft);}
.scene-points{margin:22px 0 24px;display:flex;flex-direction:column;gap:12px;}
.scene-points li{position:relative;padding-left:20px;font-size:15px;color:var(--ink-soft);}
.scene-points li::before{
  content:"";position:absolute;left:0;top:.7em;width:8px;height:8px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 3px rgba(198,242,78,.22);
}
.scene-dark{background:var(--deep);color:#fff;}
.scene-dark .scene h3{color:#fff;}
.scene-dark .scene p,.scene-dark .scene-points li{color:rgba(255,255,255,.76);}
.scene-dark .scene + .scene{border-top-color:rgba(255,255,255,.1);}
.scene-dark .scene-media{border-color:rgba(255,255,255,.16);}
.arrow-link{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:700;
  color:var(--brand-deep);border-bottom:2px solid transparent;padding-bottom:3px;
  transition:border-color .22s ease,gap .22s ease;
}
.scene-dark .arrow-link{color:var(--accent);}
.arrow-link:hover{border-color:currentColor;gap:12px;}

/* ---------- Trust ---------- */
.stat-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);
  padding:28px 0 40px;border-bottom:1px solid var(--line-soft);
}
.stat-item b{display:block;font-size:32px;font-weight:800;line-height:1.15;color:var(--brand);}
.stat-item:nth-child(even) b{color:#7FA81E;}
.stat-item span{display:block;margin-top:6px;font-size:13px;color:var(--ink-soft);letter-spacing:.02em;}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);margin-top:40px;align-items:start;}
.quote-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px;box-shadow:var(--sh-1);
  transition:transform .24s ease,box-shadow .24s ease;
}
.quote-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.quote-card:nth-child(2){margin-top:26px;}
.quote-card:nth-child(3){margin-top:12px;}
.quote-head{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:0 0 auto;
  background:linear-gradient(140deg,var(--brand),#F5A46B);
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:15px;
}
.quote-head b{display:block;font-size:14.5px;}
.quote-head span{display:block;font-size:12.5px;color:var(--ink-mute);}
.stars{color:var(--brand);font-size:13px;letter-spacing:.16em;}
.quote-card p{font-size:15px;color:var(--ink-soft);}
.partner-bar{
  display:flex;flex-wrap:wrap;gap:14px;margin-top:40px;
  padding-top:32px;border-top:1px solid var(--line-soft);
}
.partner-bar span{
  display:inline-flex;align-items:center;
  padding:10px 20px;border-radius:var(--r-pill);
  background:#F4EFE7;color:var(--ink-soft);
  font-size:13.5px;font-weight:600;letter-spacing:.02em;
}

/* ---------- News / CMS ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.post-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:#F3D5C4;}
.post-thumb{display:block;position:relative;overflow:hidden;background:var(--line-soft);}
.post-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease;}
.post-card:hover .post-thumb img{transform:scale(1.05);}
.post-cat{
  position:absolute;left:14px;top:14px;
  padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(242,98,31,.94);color:#fff;
  font-size:12px;font-weight:700;letter-spacing:.02em;
}
.post-body{padding:22px 22px 20px;display:flex;flex-direction:column;flex:1;}
.post-body h3{font-size:17.5px;font-weight:700;line-height:1.55;margin-bottom:10px;}
.post-body h3 a{transition:color .2s ease;}
.post-card:hover .post-body h3 a{color:var(--brand-deep);}
.post-body p{
  font-size:14px;color:var(--ink-soft);line-height:1.75;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  padding-top:14px;border-top:1px solid var(--line-soft);
  font-size:13px;color:var(--ink-mute);
}
.post-meta .arrow{color:var(--brand);font-size:16px;transition:transform .22s ease;}
.post-card:hover .post-meta .arrow{transform:translateX(4px);}
.post-empty{
  grid-column:1/-1;border:1px dashed var(--line);border-radius:var(--r-md);
  padding:48px 24px;text-align:center;color:var(--ink-mute);background:#fff;
}
.post-empty p{margin-top:8px;font-size:14px;}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.4fr);gap:56px;align-items:start;}
.faq-aside{position:sticky;top:100px;}
.faq-aside h2{font-size:clamp(24px,2.6vw,32px);font-weight:800;line-height:1.35;}
.faq-aside p{margin-top:14px;font-size:15.5px;color:var(--ink-soft);}
.contact-card{
  margin-top:26px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);padding:24px;box-shadow:var(--sh-1);
}
.contact-card b{display:block;font-size:15.5px;font-weight:800;margin-bottom:8px;}
.contact-card p{font-size:14px;color:var(--ink-soft);}
.contact-card .btn{margin-top:18px;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:#F0CBB5;box-shadow:var(--sh-2);border-left:3px solid var(--brand);}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 56px 20px 22px;
  font-size:16px;font-weight:600;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after,
.faq-item summary::before{
  content:"";position:absolute;right:24px;top:50%;background:var(--brand);border-radius:2px;
  transition:transform .22s ease,opacity .22s ease;
}
.faq-item summary::before{width:14px;height:2px;transform:translateY(-1px);}
.faq-item summary::after{width:2px;height:14px;transform:translate(-6px,-7px);}
.faq-item[open] summary::after{transform:translate(-6px,-7px) rotate(90deg);opacity:0;}
.faq-item p{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--ink-soft);}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:var(--deep);color:#fff;padding:52px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.14;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);font-weight:800;line-height:1.35;}
.cta-band p{margin-top:12px;font-size:15.5px;color:rgba(255,255,255,.78);max-width:38em;}

/* ---------- Footer ---------- */
.site-footer{background:var(--deep);color:#fff;padding:72px 0 0;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand-main{font-size:16.5px;font-weight:800;color:#fff;display:block;line-height:1.3;}
.footer-brand-sub{font-size:11px;letter-spacing:.14em;color:rgba(255,255,255,.5);display:block;}
.site-footer p{font-size:14px;color:rgba(255,255,255,.66);line-height:1.8;}
.footer-col h3{font-size:15px;font-weight:700;margin-bottom:16px;color:#fff;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68);transition:color .2s ease,padding-left .2s ease;}
.footer-col a:hover{color:var(--accent);padding-left:4px;}
.footer-contact{margin-top:20px;font-size:13.5px;color:rgba(255,255,255,.6);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.52);}
.to-top{
  display:inline-flex;align-items:center;gap:8px;font-size:13.5px;font-weight:600;
  color:rgba(255,255,255,.78);border:1px solid rgba(255,255,255,.22);
  border-radius:var(--r-pill);padding:9px 18px;background:transparent;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.to-top:hover{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.5);}

/* ---------- Sticky conversion bar ---------- */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:900;
  height:64px;background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -10px 30px -16px rgba(20,35,31,.35);
  transform:translateY(110%);opacity:0;
  transition:transform .3s ease,opacity .3s ease;
}
.sticky-bar.is-visible{transform:translateY(0);opacity:1;}
.sticky-inner{
  height:100%;display:flex;align-items:center;gap:16px;
  max-width:var(--container);margin:0 auto;padding:0 24px;
}
.sticky-text{font-size:14px;color:var(--ink-soft);}
.sticky-text b{color:var(--ink);font-weight:700;}
.sticky-chip{
  margin-left:auto;padding:6px 14px;border-radius:var(--r-pill);
  background:#EEF9D6;color:#4C6B12;font-size:12.5px;font-weight:700;
}
.sticky-actions{display:flex;align-items:center;gap:10px;}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .nav-search{width:180px;}
  .hero-grid{gap:40px;}
  .feature-grid{grid-template-columns:4fr 4fr 4fr;}
  .feature-offset-1{margin-top:22px;}
  .feature-offset-2{margin-top:44px;}
}
@media (max-width:1023px){
  .nav-menu{display:none;}
  .nav-search{display:none;}
  .hamburger{display:flex;}
  .hero-grid{grid-template-columns:1fr;gap:40px;padding:72px 0;}
  .hero-card{max-width:520px;}
  .feature-grid{grid-template-columns:1fr 1fr;}
  .feature-card.tall{grid-column:1/-1;}
  .feature-offset-1,.feature-offset-2{margin-top:0;}
  .scene{grid-template-columns:1fr;gap:32px;padding:64px 0;}
  .scene.reverse .scene-media{order:2;}
  .stat-bar{grid-template-columns:repeat(2,1fr);gap:28px;}
  .quote-grid{grid-template-columns:1fr;gap:20px;}
  .quote-card:nth-child(2),.quote-card:nth-child(3){margin-top:0;}
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .faq-layout{grid-template-columns:1fr;gap:36px;}
  .faq-aside{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 30px;}
}
@media (max-width:767px){
  body{padding-bottom:88px;}
  .container,.container-wide{padding:0 18px;}
  .section{padding:64px 0;}
  .section-tight{padding:52px 0;}
  .hero{min-height:auto;}
  .hero h1{font-size:29px;}
  .hero-sub{font-size:15.5px;}
  .hero-cta{gap:10px;}
  .hero-cta .btn{width:100%;}
  .hero-stats{gap:24px 32px;margin-top:32px;}
  .hero-stat b{font-size:23px;}
  .feature-grid{grid-template-columns:1fr;gap:18px;}
  .stat-bar{grid-template-columns:repeat(2,1fr);}
  .post-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-band{border-radius:18px;padding:32px 22px;}
  .section-head{margin-bottom:30px;}
  .sticky-inner{padding:0 16px;gap:10px;}
  .sticky-text{display:none;}
  .sticky-chip{margin-left:0;}
  .sticky-actions{margin-left:auto;flex:1;}
  .sticky-actions .btn{flex:1;padding:0 12px;font-size:14px;}
  .footer-bottom{padding:18px 0;}
}
@media (max-width:479px){
  .brand-sub{display:none;}
  .brand-main{font-size:15px;}
  .hero-badge{font-size:12px;padding:6px 12px;}
  .stat-item b{font-size:26px;}
  .sticky-actions .btn:first-child{display:none;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
}

/* roulang page: article */
:root{
  --brand:#F2621F;
  --brand-deep:#C1440E;
  --accent:#C6F24E;
  --ink:#14231F;
  --ink-soft:#4A5A55;
  --deep:#0E1F1A;
  --bg:#FAF6F0;
  --surface:#FFFFFF;
  --line:#E8E1D8;
  --danger:#D93025;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,35,31,.06);
  --sh-2:0 8px 24px -8px rgba(20,35,31,.14);
  --sh-hover:0 18px 40px -12px rgba(193,68,14,.22);
  --gap:24px;
  --container:1200px;
  --header-h:68px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-bottom:96px;
  background:
    radial-gradient(1200px 620px at 12% -8%,rgba(242,98,31,.10),transparent 60%),
    radial-gradient(900px 520px at 92% 4%,rgba(198,242,78,.14),transparent 62%),
    var(--bg);
  color:var(--ink);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer}
input,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:800;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:800;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-1);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 30px -14px rgba(20,35,31,.22)}
.header-inner{
  height:var(--header-h);
  display:flex;align-items:center;gap:28px;
}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-deep) 100%);
  display:grid;place-items:center;
  box-shadow:0 6px 14px -6px rgba(193,68,14,.55);
}
.brand-mark span{
  width:13px;height:13px;border-radius:4px;
  border:2.5px solid #fff;border-right-color:transparent;border-bottom-color:transparent;
  transform:rotate(45deg);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-main{font-size:16.5px;font-weight:800;letter-spacing:-.2px;white-space:nowrap}
.brand-sub{font-size:10.5px;letter-spacing:.14em;color:var(--ink-soft);text-transform:uppercase}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:6px}
.nav-menu a{
  position:relative;
  font-size:15px;font-weight:500;color:var(--ink-soft);
  padding:9px 14px;border-radius:var(--r-pill);
  transition:color .2s ease,background .2s ease;
}
.nav-menu a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;border-radius:2px;
}
.nav-menu a:hover{color:var(--ink);background:#F7F2EA}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.is-active{color:var(--brand-deep);font-weight:700;background:#FDF1E8}
.nav-menu a.is-active::after{transform:scaleX(1)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{
  display:flex;align-items:center;gap:8px;
  width:228px;height:40px;padding:0 14px;
  background:#F7F2EA;border:1px solid var(--line);border-radius:var(--r-pill);
  transition:border-color .2s ease,background .2s ease,box-shadow .2s ease;
}
.search-box:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(242,98,31,.13)}
.search-box svg{flex:0 0 auto;opacity:.55}
.search-box input{
  width:100%;border:0;background:transparent;outline:none;font-size:14px;
}
.search-box input::placeholder{color:#98A29D}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border:1px solid transparent;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
  transition:transform .18s ease,background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--brand-deep);color:#fff;box-shadow:0 10px 22px -12px rgba(193,68,14,.85)}
.btn-primary:hover{background:#A33809;transform:translateY(-1px);box-shadow:var(--sh-hover)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand-deep);transform:translateY(-1px)}
.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.42)}
.btn-ghost:hover{background:rgba(255,255,255,.24);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.menu-toggle{
  display:none;height:40px;padding:0 14px;border:1px solid var(--line);
  background:#fff;border-radius:var(--r-pill);font-size:14px;font-weight:600;
}
.menu-toggle:hover{border-color:var(--brand);color:var(--brand-deep)}

/* ============ drawer ============ */
.drawer{
  position:fixed;inset:0;z-index:1000;background:#fff;
  transform:translateX(100%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;padding:22px 24px 32px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-close{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;font-size:18px;
}
.drawer-nav{display:flex;flex-direction:column;gap:6px}
.drawer-nav a{
  padding:15px 16px;border-radius:var(--r-md);font-size:17px;font-weight:600;
  border:1px solid transparent;
}
.drawer-nav a:hover,.drawer-nav a.is-active{background:#FDF1E8;border-color:#F6DCC9;color:var(--brand-deep)}
.drawer-foot{margin-top:auto;padding-top:26px;display:flex;flex-direction:column;gap:12px}
.drawer-foot .btn{width:100%}

/* ============ breadcrumb ============ */
.breadcrumb-bar{background:#F3EDE4;border-bottom:1px solid var(--line)}
.breadcrumb{
  height:50px;display:flex;align-items:center;gap:9px;font-size:13px;color:var(--ink-soft);
  letter-spacing:.02em;overflow:hidden;
}
.breadcrumb a{color:var(--ink-soft);transition:color .2s ease}
.breadcrumb a:hover{color:var(--brand-deep)}
.breadcrumb .sep{color:#BCB3A6}
.breadcrumb .current{
  color:var(--ink);font-weight:600;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:52%;
}

/* ============ layout ============ */
.main{padding:52px 0 0}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:52px;align-items:start}
.article{min-width:0}

/* ============ article head ============ */
.article-head{padding-bottom:26px;border-bottom:1px solid var(--line)}
.badge-cat{
  display:inline-flex;align-items:center;gap:7px;
  height:29px;padding:0 13px;border-radius:var(--r-pill);
  background:#FDEBDD;color:var(--brand-deep);
  font-size:12.5px;font-weight:700;letter-spacing:.04em;
}
.badge-cat::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}
.article-head h1{
  margin:18px 0 16px;
  font-size:37px;line-height:1.28;font-weight:800;letter-spacing:-.02em;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  font-size:13px;color:var(--ink-soft);letter-spacing:.02em;
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C9C0B3}
.article-cover{
  margin:28px 0 6px;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--sh-2);
}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-cover figcaption{font-size:13px;color:var(--ink-soft);text-align:center;padding:12px 0 2px}

/* ============ prose ============ */
.prose{padding:34px 0 8px;font-size:17px;line-height:1.9;color:var(--ink)}
.prose>*:first-child{margin-top:0}
.prose p{margin:0 0 1.05em}
.prose h2{
  margin:44px 0 16px;padding-left:14px;
  font-size:28px;line-height:1.35;
  border-left:4px solid var(--brand);
}
.prose h3{margin:32px 0 12px;font-size:21px;color:var(--ink)}
.prose h4{margin:24px 0 10px;font-size:17.5px;color:var(--brand-deep)}
.prose a{color:var(--brand-deep);font-weight:600;border-bottom:2px solid rgba(242,98,31,.3)}
.prose a:hover{border-bottom-color:var(--brand)}
.prose strong{font-weight:700}
.prose ul,.prose ol{margin:0 0 1.15em;padding-left:2px}
.prose ul li{position:relative;padding-left:22px;margin-bottom:9px}
.prose ul li::before{
  content:"";position:absolute;left:2px;top:.72em;
  width:8px;height:8px;border-radius:50%;background:var(--brand);
}
.prose ol{counter-reset:li}
.prose ol li{position:relative;padding-left:28px;margin-bottom:9px;counter-increment:li}
.prose ol li::before{
  content:counter(li);position:absolute;left:0;top:.34em;
  width:18px;height:18px;border-radius:5px;background:var(--accent);color:var(--deep);
  font-size:11.5px;font-weight:800;display:grid;place-items:center;line-height:1;
}
.prose blockquote{
  margin:24px 0;padding:18px 22px;
  background:#F6F2EA;border-left:4px solid var(--accent);border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:#2C3B36;font-size:16.5px;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{border-radius:16px;margin:22px 0 10px;border:1px solid var(--line)}
.prose figure{margin:26px 0}
.prose figure figcaption{font-size:13px;color:var(--ink-soft);text-align:center;margin-top:10px}
.prose table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15.5px;
  border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden;
}
.prose thead th{background:#F3EDE4;font-weight:700;text-align:left}
.prose th,.prose td{padding:12px 16px;border-bottom:1px solid var(--line)}
.prose tbody tr:nth-child(even){background:#FBF8F3}
.prose tbody tr:last-child td{border-bottom:0}
.prose hr{border:0;height:1px;background:var(--line);margin:36px 0}
.prose code{
  background:#F1ECE3;padding:2px 7px;border-radius:6px;font-size:.92em;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
}

/* empty state */
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-md);
  padding:52px 28px;text-align:center;background:#FCFAF6;
}
.empty-state .empty-icon{
  width:52px;height:52px;margin:0 auto 16px;border-radius:16px;
  background:#F1ECE3;display:grid;place-items:center;color:var(--ink-soft);font-size:22px;
}
.empty-state h2{margin:0 0 8px;font-size:20px;padding:0;border:0}
.empty-state p{color:var(--ink-soft);font-size:15px;margin-bottom:20px}

/* ============ tags & share ============ */
.article-foot{margin-top:38px;padding-top:26px;border-top:1px solid var(--line)}
.tag-row{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.tag-row .label{font-size:13px;color:var(--ink-soft);letter-spacing:.03em}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 15px;
  border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;
  font-size:13px;color:var(--ink-soft);transition:all .2s ease;
}
.tag:hover{border-color:var(--brand);color:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--sh-1)}
.share-row{display:flex;align-items:center;flex-wrap:wrap;gap:10px}
.share-row .label{font-size:13px;color:var(--ink-soft);letter-spacing:.03em}
.chip{
  display:inline-flex;align-items:center;height:32px;padding:0 15px;
  border-radius:var(--r-pill);background:#F3EDE4;color:var(--ink-soft);font-size:13px;
  transition:background .2s ease,color .2s ease;
}
.chip:hover{background:var(--accent);color:var(--deep)}
.back-row{margin-top:26px;display:flex;gap:12px;flex-wrap:wrap}

/* ============ sidebar ============ */
.sidebar{position:sticky;top:92px;display:flex;flex-direction:column;gap:22px}
.panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--sh-1);
}
.panel-title{
  display:flex;align-items:center;gap:9px;
  font-size:15.5px;font-weight:800;margin-bottom:14px;
}
.panel-title::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--brand)}
.panel-note{font-size:14.5px;color:var(--ink-soft);line-height:1.75}
.side-list{display:flex;flex-direction:column}
.side-list a{
  display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);
  font-size:15px;font-weight:600;line-height:1.55;transition:color .2s ease,transform .2s ease;
}
.side-list a:last-child{border-bottom:0;padding-bottom:0}
.side-list a:hover{color:var(--brand-deep);transform:translateX(3px)}
.side-list .num{
  flex:0 0 auto;width:24px;height:24px;border-radius:8px;background:#FDEBDD;color:var(--brand-deep);
  font-size:12px;font-weight:800;display:grid;place-items:center;
}
.side-cta{
  background:linear-gradient(150deg,#132A23 0%,var(--deep) 100%);
  border-radius:var(--r-md);padding:24px;color:#fff;border:1px solid rgba(255,255,255,.08);
}
.side-cta h3{font-size:17px;margin-bottom:10px}
.side-cta p{font-size:14px;color:rgba(255,255,255,.75);line-height:1.75;margin-bottom:18px}
.side-cta .btn{width:100%}
.side-cta .btn-outline{color:#fff;border-color:rgba(255,255,255,.35);background:transparent}
.side-cta .btn-outline:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff}
.side-cta .btn+.btn{margin-top:10px}

/* ============ related ============ */
.section{padding:74px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px}
.section-head h2{font-size:30px}
.section-head .more{font-size:14.5px;font-weight:600;color:var(--brand-deep);transition:transform .2s ease}
.section-head .more:hover{transform:translateX(3px)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
  display:flex;flex-direction:column;
}
.card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform .28s ease;z-index:2;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:#F0DACB}
.card:hover::before{transform:scaleX(1)}
.card-thumb{position:relative;overflow:hidden;background:#EFEAE2}
.card-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s ease}
.card:hover .card-thumb img{transform:scale(1.045)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.card-tag{
  align-self:flex-start;font-size:12px;font-weight:700;letter-spacing:.04em;
  color:var(--brand-deep);background:#FDEBDD;border-radius:var(--r-pill);
  padding:4px 11px;margin-bottom:12px;
}
.card-body h3{font-size:17.5px;line-height:1.55;margin-bottom:10px}
.card-body p{font-size:14px;color:var(--ink-soft);line-height:1.7;margin-bottom:16px}
.card-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-soft);padding-top:14px;border-top:1px solid var(--line);
}
.card-foot .arrow{color:var(--brand-deep);font-weight:700;transition:transform .2s ease}
.card:hover .card-foot .arrow{transform:translateX(4px)}

/* ============ cta band ============ */
.cta-band{padding:86px 0 0}
.cta-inner{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:linear-gradient(140deg,#13291F 0%,var(--deep) 60%,#0A1713 100%);
  padding:52px 56px;display:flex;align-items:center;justify-content:space-between;gap:36px;
  border:1px solid rgba(255,255,255,.08);
}
.cta-inner::after{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-3.png);
  background-size:cover;background-position:center;opacity:.13;mix-blend-mode:luminosity;
}
.cta-copy{position:relative;z-index:2;max-width:640px}
.cta-copy h2{color:#fff;font-size:31px;margin-bottom:12px}
.cta-copy p{color:rgba(255,255,255,.78);font-size:15.5px;line-height:1.8}
.cta-actions{position:relative;z-index:2;display:flex;gap:12px;flex-wrap:wrap}

/* ============ footer ============ */
.site-footer{margin-top:92px;background:var(--deep);color:#fff}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
  padding:64px 0 44px;
}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--brand)}
.footer-brand-main{display:block;font-size:16.5px;font-weight:800;line-height:1.2}
.footer-brand-sub{display:block;font-size:10.5px;letter-spacing:.14em;color:rgba(255,255,255,.5);text-transform:uppercase}
.site-footer p{color:rgba(255,255,255,.72);font-size:14.5px;line-height:1.85}
.footer-contact{margin-top:12px;font-size:13.5px;color:rgba(255,255,255,.55)}
.footer-col h3{font-size:14.5px;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s ease,padding-left .2s ease}
.footer-col a:hover{color:var(--accent);padding-left:3px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.12);
}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.6)}
.to-top{
  height:36px;padding:0 16px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:#fff;font-size:13px;
  transition:background .2s ease,transform .2s ease;
}
.to-top:hover{background:var(--brand);border-color:var(--brand);transform:translateY(-1px)}

/* ============ sticky bar ============ */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:900;
  background:#fff;border-top:1px solid var(--line);box-shadow:var(--sh-2);
  padding-bottom:env(safe-area-inset-bottom);
  transform:translateY(120%);opacity:0;transition:transform .32s ease,opacity .32s ease;
}
.sticky-bar.is-visible{transform:translateY(0);opacity:1}
.sticky-inner{height:64px;display:flex;align-items:center;gap:16px}
.sticky-text{font-size:14.5px;color:var(--ink-soft);flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sticky-tag{
  display:inline-flex;align-items:center;height:30px;padding:0 13px;border-radius:var(--r-pill);
  background:var(--accent);color:var(--deep);font-size:12.5px;font-weight:800;letter-spacing:.02em;flex:0 0 auto;
}
.sticky-actions{display:flex;gap:10px;flex:0 0 auto}

/* ============ responsive ============ */
@media (max-width:1279px){
  .layout{grid-template-columns:minmax(0,1fr) 300px;gap:40px}
  .article-head h1{font-size:33px}
  .cta-inner{padding:46px 44px}
}
@media (max-width:1023px){
  .nav-menu,.search-box{display:none}
  .menu-toggle{display:inline-flex;align-items:center}
  .layout{grid-template-columns:1fr;gap:42px}
  .sidebar{position:static}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 36px}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:40px 32px}
  .section{padding:60px 0 0}
}
@media (max-width:767px){
  body{padding-bottom:118px;font-size:15.5px}
  .container{padding:0 18px}
  .header-actions .btn-primary{display:none}
  .main{padding:34px 0 0}
  .article-head h1{font-size:27px}
  .prose{font-size:16.5px;line-height:1.88}
  .prose h2{font-size:23px;margin-top:36px}
  .prose h3{font-size:19px}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
  .section-head h2{font-size:25px}
  .card-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .cta-copy h2{font-size:25px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .sticky-inner{height:auto;padding:10px 0;flex-wrap:wrap;gap:10px}
  .sticky-text{display:none}
  .sticky-tag{order:1}
  .sticky-actions{order:2;width:100%}
  .sticky-actions .btn{flex:1;height:42px}
  .back-row .btn{width:100%}
}
@media (max-width:519px){
  .brand-main{font-size:15px;white-space:normal}
  .article-head h1{font-size:24px}
  .badge-cat{height:26px;font-size:12px}
  .breadcrumb .current{max-width:44%}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
  --brand:#F2621F;
  --brand-deep:#C1440E;
  --accent:#C6F24E;
  --ink:#14231F;
  --ink-soft:#4A5A55;
  --deep:#0E1F1A;
  --bg:#FAF6F0;
  --surface:#FFFFFF;
  --line:#E8E1D8;
  --danger:#D93025;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,35,31,.06);
  --sh-2:0 8px 24px -8px rgba(20,35,31,.14);
  --sh-3:0 18px 40px -12px rgba(193,68,14,.22);
  --container:1200px;
  --font:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  padding-bottom:84px;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{line-height:1.3;font-weight:800}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font-family:inherit;font-size:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand-deep);color:#fff;box-shadow:0 8px 20px -10px rgba(193,68,14,.7)}
.btn-primary:hover{background:#A23809;transform:translateY(-1px);box-shadow:var(--sh-3)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.5)}
.btn-ghost:hover{background:rgba(255,255,255,.18);border-color:#fff;transform:translateY(-1px)}
.btn-line{background:var(--surface);color:var(--ink);border:1px solid var(--line)}
.btn-line:hover{border-color:var(--brand);color:var(--brand-deep);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-lg{height:54px;padding:0 30px;font-size:16px}
.btn-block{width:100%}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:800;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-1);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 28px -18px rgba(20,35,31,.4)}
.header-inner{display:flex;align-items:center;gap:28px;height:72px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-deep) 100%);
  display:grid;place-items:center;position:relative;flex-shrink:0;
  box-shadow:0 8px 18px -10px rgba(193,68,14,.85);
}
.brand-mark::before{
  content:"";width:14px;height:14px;border-radius:4px;
  border:2px solid #fff;border-right-color:transparent;border-bottom-color:transparent;
  transform:rotate(45deg) translate(-1px,1px);
}
.brand-mark span{position:absolute;right:9px;bottom:9px;width:7px;height:7px;border-radius:50%;background:var(--accent)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-main{font-size:17px;font-weight:800;letter-spacing:.01em}
.brand-sub{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-soft);margin-top:3px}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:8px}
.nav-menu a{
  position:relative;padding:10px 14px;border-radius:var(--r-sm);
  font-size:15px;color:var(--ink-soft);font-weight:500;
  transition:color .18s ease,background-color .18s ease;
}
.nav-menu a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-menu a:hover{color:var(--ink);background:#FDF9F4}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.is-active{color:var(--brand-deep);font-weight:700}
.nav-menu a.is-active::after{transform:scaleX(1)}
.header-tools{display:flex;align-items:center;gap:14px;margin-left:auto}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:230px;height:42px;padding:0 14px;
  background:#F6F1EA;border:1px solid transparent;border-radius:var(--r-pill);
  transition:border-color .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.nav-search svg{width:16px;height:16px;color:var(--ink-soft);flex-shrink:0}
.nav-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px}
.nav-search input::placeholder{color:#96908A}
.nav-search:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(242,98,31,.12)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:#fff;
  flex-direction:column;justify-content:center;align-items:center;gap:5px;
}
.nav-toggle span{width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .22s ease,opacity .22s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-drawer{
  display:none;position:fixed;inset:72px 0 0 0;z-index:1000;
  background:#fff;padding:24px;flex-direction:column;gap:6px;overflow-y:auto;
  border-top:1px solid var(--line);
}
.mobile-drawer.is-open{display:flex}
.mobile-drawer a.drawer-link{
  padding:16px 4px;font-size:17px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a.drawer-link.is-active{color:var(--brand-deep)}
.mobile-drawer .drawer-search{
  display:flex;align-items:center;gap:10px;height:50px;padding:0 18px;margin:16px 0 8px;
  background:#F6F1EA;border-radius:var(--r-sm);border:1px solid transparent;
}
.mobile-drawer .drawer-search input{border:0;background:transparent;outline:none;width:100%;font-size:15px}
.mobile-drawer .btn{margin-top:12px;height:52px}

/* ---------- 分类页 Hero ---------- */
.page-hero{position:relative;min-height:340px;display:flex;align-items:flex-end;overflow:hidden;background:var(--deep)}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/coverpic/cover-1.webp');
  background-size:cover;background-position:center;
  opacity:.85;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(14,31,26,.94) 0%,rgba(14,31,26,.78) 46%,rgba(14,31,26,.56) 100%);
}
.page-hero-inner{position:relative;z-index:2;padding:96px 24px 48px;width:100%;max-width:var(--container);margin:0 auto}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:18px;flex-wrap:wrap}
.breadcrumb a{color:rgba(255,255,255,.78);border-bottom:1px solid transparent;transition:color .18s ease,border-color .18s ease}
.breadcrumb a:hover{color:var(--accent);border-color:var(--accent)}
.breadcrumb .current{color:#fff}
.page-hero h1{
  color:#fff;font-size:clamp(28px,3.4vw,42px);line-height:1.25;letter-spacing:-.01em;
  max-width:900px;margin-bottom:16px;
}
.page-hero-lede{color:rgba(255,255,255,.82);font-size:16px;max-width:720px;line-height:1.85}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--accent);color:var(--deep);
  font-size:12px;font-weight:700;letter-spacing:.06em;
  padding:6px 14px;border-radius:var(--r-pill);margin-bottom:18px;
}

/* ---------- 数据条 ---------- */
.stats-strip{margin-top:-32px;position:relative;z-index:5}
.stats-inner{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-2);padding:24px 28px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
}
.stat-item{border-left:2px solid rgba(242,98,31,.18);padding-left:18px}
.stat-item:first-child{border-left-color:var(--brand)}
.stat-num{font-size:30px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.1}
.stat-num small{font-size:14px;font-weight:600;margin-left:2px;color:var(--brand-deep)}
.stat-label{font-size:13px;color:var(--ink-soft);margin-top:6px;letter-spacing:.02em}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section-main{padding-top:72px}
.section-head{margin-bottom:40px;max-width:760px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--brand-deep);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:2px}
.section-head h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:14px}
.section-desc{color:var(--ink-soft);font-size:16px;line-height:1.85}

/* ---------- 主体布局：目录 + 卡片网格 ---------- */
.main-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:36px;align-items:start}
.toc{
  position:sticky;top:96px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 20px;box-shadow:var(--sh-1);
}
.toc-title{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--ink-soft);margin-bottom:14px}
.toc ul{display:flex;flex-direction:column;gap:2px}
.toc li a{
  display:flex;align-items:flex-start;gap:10px;
  padding:9px 10px;border-radius:var(--r-sm);font-size:14px;line-height:1.55;color:var(--ink-soft);
  transition:background-color .18s ease,color .18s ease,transform .18s ease;
}
.toc li a:hover{background:#FDF3EB;color:var(--brand-deep);transform:translateX(2px)}
.toc-num{
  font-variant-numeric:tabular-nums;font-weight:700;font-size:12px;color:var(--brand);
  min-width:18px;padding-top:2px;
}
.toc-foot{
  display:inline-flex;align-items:center;gap:6px;margin-top:16px;padding-top:14px;
  border-top:1px solid var(--line);font-size:14px;font-weight:600;color:var(--brand-deep);
}
.toc-foot:hover{color:var(--brand)}

.entry-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.entry-card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);padding:26px 24px 22px;
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.entry-card::before{
  content:"";position:absolute;left:0;top:0;height:3px;width:100%;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  transform:scaleX(0);transform-origin:left;transition:transform .26s ease;
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#F2D9C7}
.entry-card:hover::before{transform:scaleX(1)}
.entry-icon{
  width:46px;height:46px;border-radius:14px;
  background:#FDF3EB;color:var(--brand-deep);
  display:grid;place-items:center;margin-bottom:16px;
}
.entry-icon svg{width:22px;height:22px}
.entry-card h3{font-size:18px;margin-bottom:10px}
.entry-card p{font-size:14.5px;color:var(--ink-soft);line-height:1.8}
.entry-foot{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:20px;padding-top:16px;border-top:1px solid var(--line);
}
.entry-step{
  font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--ink-soft);
  font-variant-numeric:tabular-nums;
}
.entry-arrow{
  color:var(--brand);font-size:18px;font-weight:700;
  transition:transform .2s ease;
}
.entry-card:hover .entry-arrow{transform:translateX(4px)}

/* ---------- 深色细节区块 ---------- */
.dark-band{background:var(--deep);color:#fff;padding:88px 0;position:relative;overflow:hidden}
.dark-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;opacity:.12;
}
.dark-band .container{position:relative;z-index:2}
.dark-band .eyebrow{color:var(--accent)}
.dark-band .eyebrow::before{background:var(--accent)}
.dark-band h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:14px;color:#fff}
.dark-band .section-desc{color:rgba(255,255,255,.72)}
.detail-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px}
.detail-item{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-md);padding:26px 24px;
  transition:background-color .22s ease,transform .22s ease,border-color .22s ease;
}
.detail-item:hover{background:rgba(255,255,255,.09);transform:translateY(-3px);border-color:rgba(198,242,78,.45)}
.detail-item h3{font-size:18px;color:#fff;margin-bottom:12px;display:flex;align-items:center;gap:10px}
.detail-item h3::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent);flex-shrink:0}
.detail-item p{font-size:14.5px;color:rgba(255,255,255,.74);line-height:1.85}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:360px minmax(0,1fr);gap:44px;align-items:start}
.faq-aside{position:sticky;top:100px}
.faq-aside h2{font-size:clamp(24px,2.4vw,30px);margin-bottom:14px}
.faq-aside p{color:var(--ink-soft);font-size:15px;line-height:1.85}
.faq-contact{
  margin-top:24px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);padding:22px;box-shadow:var(--sh-1);
}
.faq-contact strong{display:block;font-size:15px;margin-bottom:8px}
.faq-contact p{font-size:14px;color:var(--ink-soft)}
.faq-contact a{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;font-weight:600;color:var(--brand-deep)}
.faq-contact a:hover{color:var(--brand)}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:box-shadow .22s ease,border-color .22s ease;
}
.faq-item[open]{box-shadow:inset 3px 0 0 var(--brand),var(--sh-2);border-color:#F2D9C7}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;font-size:16px;font-weight:600;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{position:relative;width:16px;height:16px;flex-shrink:0}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
  transition:transform .22s ease,opacity .22s ease;
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{top:0;left:7px;width:2px;height:16px}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-answer{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--ink-soft)}

/* ---------- 相关推荐 ---------- */
.rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rec-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.rec-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#F2D9C7}
.rec-thumb{position:relative;aspect-ratio:16/9;background:#E8E1D8;overflow:hidden}
.rec-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.rec-card:hover .rec-thumb img{transform:scale(1.05)}
.rec-tag{
  position:absolute;left:14px;top:14px;background:rgba(255,255,255,.94);color:var(--brand-deep);
  font-size:12px;font-weight:700;padding:5px 12px;border-radius:var(--r-pill);
}
.rec-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rec-body h3{font-size:17px;line-height:1.5}
.rec-body p{font-size:14px;color:var(--ink-soft);line-height:1.75}
.rec-foot{margin-top:auto;padding-top:14px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-soft);border-top:1px solid var(--line)}
.rec-foot span:last-child{color:var(--brand);font-weight:700}

/* ---------- CTA 通栏 ---------- */
.cta-band{
  background:var(--deep);border-radius:var(--r-lg);padding:48px 46px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;opacity:.14;
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,30px);margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.76);font-size:15px;max-width:620px;line-height:1.8}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--deep);color:rgba(255,255,255,.72);padding:72px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand-main{display:block;font-size:17px;font-weight:800;color:#fff}
.footer-brand-sub{display:block;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.5);margin-top:3px}
.site-footer p{font-size:14px;line-height:1.85;max-width:380px}
.footer-contact{margin-top:14px;font-size:13px;color:rgba(255,255,255,.5) !important}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:18px;font-weight:700}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.7);transition:color .18s ease,padding-left .18s ease}
.footer-col a:hover{color:var(--accent);padding-left:4px}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.5);max-width:none}
.to-top{
  font-size:13px;color:rgba(255,255,255,.72);border:1px solid rgba(255,255,255,.2);
  padding:9px 18px;border-radius:var(--r-pill);transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.to-top:hover{color:var(--accent);border-color:var(--accent);background:rgba(198,242,78,.08)}

/* ---------- 底部固定转化条 ---------- */
.bottom-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:900;
  background:rgba(255,255,255,.98);border-top:1px solid var(--line);box-shadow:0 -8px 26px -18px rgba(20,35,31,.5);
  display:flex;align-items:center;gap:18px;
  padding:10px 24px calc(10px + env(safe-area-inset-bottom));
  transform:translateY(120%);opacity:0;
  transition:transform .3s ease,opacity .3s ease;
}
.bottom-bar.is-visible{transform:translateY(0);opacity:1}
.bottom-bar p{font-size:14px;color:var(--ink-soft);margin:0}
.bottom-tag{
  margin-left:auto;background:#FDF3EB;color:var(--brand-deep);
  font-size:13px;font-weight:700;padding:7px 16px;border-radius:var(--r-pill);
}
.bottom-actions{display:flex;gap:10px}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .nav-search{width:190px}
  .detail-grid{gap:16px}
}
@media (max-width:1024px){
  .header-inner{gap:16px}
  .nav-menu a{padding:10px 10px;font-size:14px}
  .nav-search{display:none}
  .main-layout{grid-template-columns:1fr;gap:28px}
  .toc{position:static;top:auto}
  .toc ul{flex-direction:row;flex-wrap:wrap;gap:8px}
  .toc li a{background:#FDF9F4;padding:8px 12px}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
}
@media (max-width:768px){
  body{padding-bottom:88px;font-size:15.5px}
  .container{padding:0 18px}
  .nav-menu,.header-tools{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .header-inner{height:64px}
  .mobile-drawer{inset:64px 0 0 0}
  .page-hero{min-height:300px}
  .page-hero-inner{padding:72px 18px 40px}
  .section{padding:60px 0}
  .stats-inner{grid-template-columns:repeat(2,1fr);gap:18px;padding:20px}
  .stat-num{font-size:24px}
  .entry-grid{grid-template-columns:1fr}
  .detail-grid{grid-template-columns:1fr}
  .rec-grid{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px 26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-grid > div:first-child{grid-column:1 / -1}
  .bottom-bar{flex-wrap:wrap;gap:10px;padding:10px 16px calc(10px + env(safe-area-inset-bottom))}
  .bottom-bar p{display:none}
  .bottom-tag{margin-left:0}
  .bottom-actions{width:100%;gap:10px}
  .bottom-actions .btn{flex:1;height:44px;padding:0 12px;font-size:14px}
}
@media (max-width:520px){
  .entry-card{padding:22px 18px 18px}
  .stats-inner{grid-template-columns:1fr 1fr;padding:18px 16px}
  .stat-item{padding-left:14px}
  .hero-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .cta-band h2{font-size:22px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* roulang page: category2 */
:root{
  --brand:#F2621F;
  --brand-deep:#C1440E;
  --accent:#C6F24E;
  --ink:#14231F;
  --ink-soft:#4A5A55;
  --deep:#0E1F1A;
  --bg:#FAF6F0;
  --surface:#FFFFFF;
  --line:#E8E1D8;
  --danger:#D93025;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,35,31,.06);
  --sh-2:0 8px 24px -8px rgba(20,35,31,.14);
  --sh-hover:0 18px 40px -12px rgba(193,68,14,.22);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  padding-bottom:80px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;height:auto;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--deep{background:var(--deep);color:#fff;}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{font-size:34px;line-height:1.25;font-weight:800;letter-spacing:-.01em;}
.section-head p{margin-top:14px;color:var(--ink-soft);font-size:16px;}
.section--deep .section-head p{color:rgba(255,255,255,.72);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--brand-deep);background:rgba(242,98,31,.1);
  border-radius:var(--r-pill);padding:6px 14px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;transition:all .22s ease;white-space:nowrap;
}
.btn--primary{background:var(--brand-deep);color:#fff;box-shadow:var(--sh-2);}
.btn--primary:hover{background:#A33609;transform:translateY(-1px);box-shadow:var(--sh-hover);}
.btn--primary:active{transform:translateY(1px);}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--ink);}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand-deep);transform:translateY(-1px);}
.btn--light{background:#fff;color:var(--deep);}
.btn--light:hover{background:var(--accent);color:var(--deep);transform:translateY(-1px);}
.btn--block{width:100%;}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:800;background:#fff;
  border-bottom:1px solid var(--line);box-shadow:var(--sh-1);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px -12px rgba(20,35,31,.22);}
.header-inner{
  display:flex;align-items:center;gap:28px;height:72px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--brand);
  display:grid;place-items:center;position:relative;flex-shrink:0;
}
.brand-mark span{width:16px;height:16px;border:2.5px solid #fff;border-radius:4px;display:block;}
.brand-mark span::after{content:"";display:block;width:6px;height:6px;background:#fff;border-radius:50%;margin:2px auto 0;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-main{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.brand-sub{font-size:11px;font-weight:600;letter-spacing:.14em;color:var(--ink-soft);text-transform:uppercase;}
.nav-menu{display:flex;align-items:center;gap:26px;margin-left:auto;}
.nav-menu a{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-soft);
  padding:6px 0;transition:color .2s ease;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.nav-menu a:hover{color:var(--ink);}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.is-active{color:var(--brand-deep);font-weight:700;}
.nav-menu a.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.search-box{
  display:flex;align-items:center;gap:8px;height:42px;width:224px;
  background:#F5F0E9;border:1px solid transparent;border-radius:var(--r-pill);
  padding:0 16px;transition:all .22s ease;
}
.search-box:focus-within{background:#fff;border-color:var(--brand);}
.search-box svg{flex-shrink:0;opacity:.5;}
.search-box input{flex:1;border:0;background:transparent;font-size:14px;outline:none;}
.search-box input::placeholder{color:#9AA5A1;}
.header-cta{height:42px;padding:0 22px;font-size:14px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s ease,opacity .2s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ===== Breadcrumb ===== */
.crumb{background:#F3EDE5;border-bottom:1px solid var(--line);}
.crumb-inner{display:flex;align-items:center;gap:10px;height:48px;font-size:13px;color:var(--ink-soft);}
.crumb-inner a:hover{color:var(--brand-deep);}
.crumb-inner .sep{opacity:.45;}
.crumb-inner .current{color:var(--ink);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}

/* ===== Page top ===== */
.page-top{padding:72px 0 64px;background:linear-gradient(180deg,#FFFDFA 0%,var(--bg) 100%);}
.page-top-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;}
.page-top h1{font-size:44px;line-height:1.22;font-weight:800;letter-spacing:-.015em;}
.page-top h1 em{font-style:normal;color:var(--brand-deep);}
.page-top .lead{margin-top:20px;font-size:16.5px;color:var(--ink-soft);max-width:560px;}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.chip{
  font-size:13px;font-weight:600;padding:7px 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);color:var(--ink-soft);
}
.chip--accent{background:var(--accent);border-color:var(--accent);color:var(--deep);}
.page-top-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.page-figure{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:2px solid #fff;box-shadow:var(--sh-2);aspect-ratio:4/3;background:var(--deep);
}
.page-figure img{width:100%;height:100%;object-fit:cover;}
.page-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:22px 24px 18px;
  background:linear-gradient(180deg,rgba(14,31,26,0) 0%,rgba(14,31,26,.86) 100%);
  color:#fff;font-size:13.5px;letter-spacing:.01em;
}
.page-figure .tag-on-img{
  position:absolute;top:18px;left:18px;background:var(--accent);color:var(--deep);
  font-size:12px;font-weight:700;padding:6px 12px;border-radius:var(--r-pill);letter-spacing:.04em;
}

/* ===== Quick facts ===== */
.facts{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;margin-top:8px;}
.fact{background:#fff;padding:24px 22px;}
.fact strong{display:block;font-size:28px;font-weight:800;color:var(--brand-deep);letter-spacing:-.02em;line-height:1.2;font-variant-numeric:tabular-nums;}
.fact span{display:block;margin-top:8px;font-size:13px;color:var(--ink-soft);letter-spacing:.02em;}

/* ===== Steps timeline ===== */
.steps{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:20px;margin-top:12px;}
.steps::before{
  content:"";position:absolute;top:19px;left:6%;right:6%;height:2px;
  background-image:linear-gradient(90deg,var(--brand) 0 8px,transparent 8px 16px);
  background-size:16px 2px;background-repeat:repeat-x;opacity:.55;
}
.step{position:relative;padding-top:52px;}
.step .dot{
  position:absolute;top:8px;left:0;width:22px;height:22px;border-radius:50%;
  background:#fff;border:3px solid var(--brand);box-shadow:0 0 0 5px rgba(242,98,31,.12);
}
.step .num{
  display:block;font-size:13px;font-weight:800;letter-spacing:.14em;
  color:var(--brand-deep);font-variant-numeric:tabular-nums;
}
.step h3{font-size:19px;font-weight:700;margin-top:8px;}
.step p{margin-top:10px;font-size:14.5px;color:var(--ink-soft);line-height:1.8;}

/* ===== Split panels ===== */
.split{display:grid;grid-template-columns:.95fr 1.05fr;gap:44px;align-items:start;}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:32px;box-shadow:var(--sh-1);}
.panel h2{font-size:28px;font-weight:800;letter-spacing:-.01em;}
.panel > p{margin-top:12px;color:var(--ink-soft);font-size:15px;}

/* FAQ */
.faq-list{margin-top:24px;display:flex;flex-direction:column;gap:12px;}
.faq-item{background:#FCF9F5;border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden;transition:border-color .22s ease,box-shadow .22s ease;}
.faq-item.is-open{border-color:rgba(242,98,31,.5);box-shadow:var(--sh-1);}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;
  text-align:left;padding:18px 20px;font-size:15.5px;font-weight:600;line-height:1.6;
}
.faq-icon{position:relative;width:14px;height:14px;flex-shrink:0;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand-deep);border-radius:2px;transition:transform .2s ease;
}
.faq-icon::before{top:6px;left:0;width:14px;height:2px;}
.faq-icon::after{left:6px;top:0;width:2px;height:14px;}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a p{padding:0 20px 20px;font-size:14.8px;line-height:1.85;color:var(--ink-soft);border-left:3px solid var(--brand);margin:0 0 0 20px;padding-left:16px;padding-right:20px;padding-bottom:18px;}
.faq-item.is-open .faq-a{max-height:420px;}

/* Form */
.form-note{font-size:13.5px;color:var(--ink-soft);margin-top:10px;}
.form-grid{display:flex;flex-direction:column;gap:18px;margin-top:24px;}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:8px;letter-spacing:.02em;}
.field input,.field textarea{
  width:100%;height:48px;padding:0 16px;border:1px solid var(--line);
  border-radius:var(--r-sm);background:#FCFAF7;outline:none;
  transition:border-color .2s ease,background .2s ease,box-shadow .2s ease;
}
.field textarea{height:auto;min-height:112px;padding:14px 16px;line-height:1.75;resize:vertical;}
.field input:focus,.field textarea:focus{border-color:var(--brand);background:#FFF6F0;box-shadow:0 0 0 3px rgba(242,98,31,.12);}
.field.has-error input,.field.has-error textarea{border-color:var(--danger);box-shadow:0 0 0 3px rgba(217,48,37,.1);}
.field .err{display:none;margin-top:7px;font-size:12px;color:var(--danger);}
.field.has-error .err{display:block;}
.form-success{
  display:none;margin-top:18px;padding:14px 18px;border-radius:var(--r-sm);
  background:var(--accent);color:var(--deep);font-size:14px;font-weight:600;
}
.form-success.is-visible{display:block;}

/* ===== CTA banner ===== */
.cta-banner{
  position:relative;overflow:hidden;border-radius:var(--r-lg);background:var(--deep);
  padding:52px 56px;display:flex;align-items:center;justify-content:space-between;gap:36px;
}
.cta-banner::after{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.14;mix-blend-mode:luminosity;
}
.cta-banner > *{position:relative;z-index:1;}
.cta-banner h2{font-size:30px;font-weight:800;color:#fff;letter-spacing:-.01em;}
.cta-banner p{margin-top:12px;color:rgba(255,255,255,.74);font-size:15px;max-width:560px;}

/* ===== Footer ===== */
.site-footer{background:var(--deep);color:rgba(255,255,255,.72);padding:72px 0 0;margin-top:8px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:44px;padding-bottom:52px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand .brand-mark{width:36px;height:36px;border-radius:11px;}
.footer-brand-main{display:block;font-size:16px;font-weight:800;color:#fff;}
.footer-brand-sub{display:block;font-size:11px;letter-spacing:.14em;color:rgba(255,255,255,.5);text-transform:uppercase;}
.site-footer p{font-size:14px;line-height:1.85;}
.footer-contact{margin-top:14px;font-size:13px;color:rgba(255,255,255,.5);letter-spacing:.02em;}
.footer-col h3{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s ease;}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.5);}
.to-top{
  font-size:13px;color:rgba(255,255,255,.75);border:1px solid rgba(255,255,255,.2);
  border-radius:var(--r-pill);padding:8px 18px;transition:all .22s ease;
}
.to-top:hover{color:var(--deep);background:var(--accent);border-color:var(--accent);}

/* ===== Sticky conversion bar ===== */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:900;background:#fff;
  border-top:1px solid var(--line);box-shadow:0 -10px 28px -14px rgba(20,35,31,.28);
  transform:translateY(110%);opacity:0;transition:transform .3s ease,opacity .3s ease;
  padding-bottom:env(safe-area-inset-bottom);
}
.sticky-bar.is-visible{transform:translateY(0);opacity:1;}
.sticky-inner{display:flex;align-items:center;gap:18px;height:64px;}
.sticky-inner .hint{font-size:14px;color:var(--ink-soft);}
.sticky-inner .chip--accent{flex-shrink:0;}
.sticky-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.sticky-actions .btn{height:40px;padding:0 20px;font-size:14px;}

/* ===== Responsive ===== */
@media (max-width:1279px){
  .page-top h1{font-size:38px;}
  .section{padding:80px 0;}
}
@media (max-width:1023px){
  .header-inner{height:64px;gap:18px;}
  .brand-sub{display:none;}
  .search-box{display:none;}
  .nav-toggle{display:flex;}
  .nav-menu{
    position:fixed;inset:64px 0 0;background:#fff;z-index:1000;
    flex-direction:column;align-items:stretch;gap:0;margin:0;padding:20px 24px 28px;
    transform:translateX(100%);transition:transform .28s ease;overflow-y:auto;
  }
  .nav-menu.is-open{transform:translateX(0);}
  .nav-menu a{padding:16px 4px;font-size:16px;border-bottom:1px solid var(--line);}
  .nav-menu a::after{display:none;}
  .nav-menu a.is-active{color:var(--brand-deep);}
  .page-top{padding:52px 0 48px;}
  .page-top-grid{grid-template-columns:1fr;gap:36px;}
  .page-top h1{font-size:34px;}
  .facts{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:1fr 1fr;gap:24px;}
  .steps::before{display:none;}
  .split{grid-template-columns:1fr;gap:28px;}
  .cta-banner{flex-direction:column;align-items:flex-start;padding:40px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .sticky-inner .hint{display:none;}
  .sticky-actions{margin-left:0;flex:1;}
  .sticky-actions .btn{flex:1;}
}
@media (max-width:767px){
  body{font-size:15.5px;padding-bottom:74px;}
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .section-head h2{font-size:26px;}
  .page-top h1{font-size:28px;}
  .page-top .lead{font-size:15.5px;}
  .page-top-actions .btn{width:100%;}
  .facts{grid-template-columns:1fr 1fr;}
  .fact{padding:20px 16px;}
  .fact strong{font-size:24px;}
  .steps{grid-template-columns:1fr;}
  .step{padding-top:46px;}
  .panel{padding:24px 20px;}
  .panel h2{font-size:23px;}
  .faq-q{font-size:15px;padding:16px;}
  .cta-banner{padding:32px 22px;}
  .cta-banner h2{font-size:24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px;}
  .sticky-inner{height:60px;gap:10px;}
  .sticky-inner .chip--accent{display:none;}
  .sticky-actions{gap:10px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}