/* roulang page: index */
:root{
  --brand:#C0562F;
  --brand-deep:#8F3D1F;
  --brand-soft:#F6E7DE;
  --ink:#17322C;
  --ink-2:#3D4C48;
  --accent:#E0A24A;
  --bg:#FBF8F3;
  --surface:#FFFFFF;
  --line:#E7DFD4;
  --muted:#6B6560;
  --ok:#2F7D5B;
  --warn:#B4453A;
  --sh-1:0 1px 2px rgba(23,50,44,.05), 0 8px 24px -12px rgba(23,50,44,.12);
  --sh-2:0 2px 4px rgba(23,50,44,.06), 0 18px 40px -18px rgba(23,50,44,.22);
  --r-card:16px;
  --r-sm:12px;
  --r-btn:10px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--ink-2);
  font-size:16px;
  line-height:1.9;
  padding-bottom:72px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:"Noto Serif SC","Source Han Serif SC","PingFang SC",serif;
  color:var(--ink);
  margin:0;
  font-weight:700;
}
p{margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 clamp(20px,3vw,32px)}
.section{padding:clamp(48px,7.5vw,104px) 0}
.section-tight{padding:clamp(40px,5vw,72px) 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.1em;color:var(--brand);
  font-weight:600;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);opacity:.7}
.section-title{font-size:clamp(24px,3.1vw,32px);line-height:1.3}
.section-desc{margin-top:12px;font-size:14.5px;color:var(--muted);line-height:1.8;max-width:660px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:clamp(28px,4vw,44px)}
.hairline{height:1px;background:var(--line);border:0;margin:0}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(251,248,243,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 28px -22px rgba(23,50,44,.55);border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;gap:20px;height:64px}
.logo{display:flex;align-items:center;gap:10px;white-space:nowrap;flex:none}
.logo-mark{width:34px;height:34px;flex:none;display:grid;place-items:center;border-radius:9px;background:var(--brand);color:#fff;font-size:15px}
.logo-text{font-family:"Noto Serif SC","PingFang SC",serif;font-weight:700;font-size:18.5px;color:var(--ink);letter-spacing:-.01em}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:6px}
.nav-link{
  position:relative;padding:8px 12px;font-size:14.5px;font-weight:500;
  color:var(--ink-2);border-radius:8px;transition:color .2s ease;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand)}
.nav-link.active::after{transform:scaleX(1)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;flex:none}
.cmd-search{
  position:relative;display:flex;align-items:center;gap:8px;
  width:240px;height:40px;padding:0 10px;
  background:var(--surface);border:1px solid var(--line);border-radius:10px;
  transition:width .25s ease,border-color .2s ease,box-shadow .2s ease;
}
.cmd-search:focus-within{width:320px;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.cmd-search i{color:var(--muted);font-size:13px;flex:none}
.cmd-search input{border:0;outline:0;background:transparent;width:100%;font-size:14px;color:var(--ink)}
.cmd-search input::placeholder{color:var(--muted)}
.cmd-kbd{
  font-size:11px;color:var(--muted);border:1px solid var(--line);
  border-radius:6px;padding:1px 6px;background:var(--bg);white-space:nowrap;flex:none;line-height:1.6;
}
.cmd-panel{
  position:absolute;top:calc(100% + 10px);left:0;right:0;
  background:var(--surface);border:1px solid var(--line);border-radius:12px;
  box-shadow:var(--sh-2);padding:8px;opacity:0;visibility:hidden;
  transform:translateY(-4px);transition:.2s ease;z-index:5;
}
.cmd-search:focus-within .cmd-panel{opacity:1;visibility:visible;transform:translateY(0)}
.cmd-panel-title{font-size:12px;color:var(--muted);padding:6px 10px 4px;letter-spacing:.05em}
.cmd-suggest{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:8px;font-size:14px;color:var(--ink-2);transition:background .18s ease,color .18s ease}
.cmd-suggest:hover{background:var(--brand-soft);color:var(--brand-deep)}
.cmd-suggest i{font-size:12px;color:var(--brand);opacity:.75}
.link-quiet{font-size:14px;color:var(--ink-2);transition:color .2s ease;white-space:nowrap}
.link-quiet:hover{color:var(--brand);text-decoration:underline}
.hamburger{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  background:var(--surface);color:var(--ink);align-items:center;justify-content:center;font-size:16px;
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(23,50,44,.4);opacity:0;visibility:hidden;
  transition:.24s ease;z-index:80;
}
.drawer-mask.open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
  background:var(--surface);z-index:90;padding:24px 22px;
  transform:translateX(100%);transition:transform .26s ease;
  display:flex;flex-direction:column;gap:16px;overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-close{align-self:flex-end;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:var(--bg)}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-top:6px}
.drawer-nav a{padding:13px 12px;border-radius:10px;font-size:15px;color:var(--ink-2);transition:background .18s ease,color .18s ease}
.drawer-nav a:hover{background:var(--brand-soft);color:var(--brand-deep)}
.drawer-nav a.active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:500;border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;min-height:44px;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-deep)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:9px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.text-cta{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:14px;font-weight:500;transition:color .2s ease;
}
.text-cta i{transition:transform .2s ease;font-size:12px}
.text-cta:hover{color:var(--brand-deep);text-decoration:underline}
.text-cta:hover i{transform:translateX(2px)}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:clamp(48px,7vw,88px) 0 clamp(40px,5vw,64px)}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(23,50,44,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(23,50,44,.05) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:radial-gradient(ellipse at 28% 18%,#000,transparent 70%);
  mask-image:radial-gradient(ellipse at 28% 18%,#000,transparent 70%);
}
.hero::after{
  content:"";position:absolute;top:-180px;right:-140px;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle,rgba(224,162,74,.2),transparent 68%);pointer-events:none;
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:7fr 5fr;gap:clamp(28px,4vw,56px);align-items:center}
.hero h1{
  font-size:clamp(30px,4.2vw,50px);line-height:1.25;letter-spacing:-.01em;
  margin-bottom:18px;
}
.hero h1 em{font-style:normal;color:var(--brand);position:relative}
.hero-sub{font-size:clamp(15.5px,1.4vw,17px);line-height:1.85;color:var(--ink-2);max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-media{position:relative}
.img-frame{
  position:relative;overflow:hidden;border-radius:16px;
  border:1px solid var(--line);background:var(--brand-soft);
}
.img-frame img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.img-frame:hover img{transform:scale(1.02)}
.ratio-16-10{aspect-ratio:16/10}
.ratio-16-9{aspect-ratio:16/9}
.ratio-4-3{aspect-ratio:4/3}
.ratio-3-2{aspect-ratio:3/2}
.media-note{
  position:absolute;left:-10px;bottom:18px;background:var(--surface);
  border:1px solid var(--line);border-radius:12px;padding:12px 16px;box-shadow:var(--sh-1);
  display:flex;align-items:center;gap:12px;
}
.media-note strong{font-size:22px;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1;font-family:"Noto Serif SC",serif}
.media-note span{font-size:12.5px;color:var(--muted);line-height:1.5}
.trust-bar{
  position:relative;z-index:1;margin-top:clamp(36px,5vw,56px);
  border-top:1px solid var(--line);padding-top:26px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
}
.trust-item{border-left:2px solid var(--brand-soft);padding-left:14px}
.trust-num{font-size:clamp(26px,3vw,34px);font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;line-height:1.1;font-family:"Noto Serif SC",serif}
.trust-num small{font-size:15px;font-weight:600;color:var(--brand);margin-left:2px}
.trust-label{font-size:13px;color:var(--muted);margin-top:6px;line-height:1.6}

/* ---------- cards ---------- */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.card:hover{border-color:rgba(192,86,47,.3);transform:translateY(-2px);box-shadow:var(--sh-2)}
.value-card{padding:clamp(24px,2.6vw,32px);height:100%;display:flex;flex-direction:column}
.value-num{
  font-family:"Noto Serif SC",serif;font-size:34px;font-weight:300;
  color:var(--brand);line-height:1;letter-spacing:.02em;
}
.value-card h3{font-size:clamp(18px,1.7vw,21px);line-height:1.4;margin-top:16px}
.tick-list{list-style:none;margin:18px 0 0;padding:0}
.tick-list li{position:relative;padding-left:18px;font-size:14.5px;line-height:1.95;color:var(--ink-2)}
.tick-list li::before{
  content:"";position:absolute;left:0;top:.85em;width:6px;height:6px;border-radius:50%;
  background:var(--brand);opacity:.75;
}
.value-card .text-cta{margin-top:auto;padding-top:22px}
.offset-up{transform:translateY(-20px)}
@media (max-width:1023px){.offset-up{transform:none}}

.badge{
  display:inline-flex;align-items:center;gap:5px;padding:3px 11px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-deep);font-size:12.5px;font-weight:500;line-height:1.7;
}
.badge-soft{background:rgba(23,50,44,.06);color:var(--ink-2)}

/* ---------- scene ---------- */
.scene-row{display:grid;grid-template-columns:6fr 6fr;gap:clamp(24px,4vw,56px);align-items:center;padding:clamp(28px,4vw,44px) 0}
.scene-row + .scene-row{border-top:1px solid var(--line)}
.scene-row.reverse .scene-media{order:2}
.scene-index{
  font-family:"Noto Serif SC",serif;font-size:13px;letter-spacing:.16em;
  color:var(--brand);font-weight:600;margin-bottom:10px;
}
.scene-row h3{font-size:clamp(20px,2.2vw,26px);line-height:1.35;margin-bottom:12px}
.scene-row p{font-size:15px;line-height:1.9;color:var(--muted);max-width:520px}

/* ---------- proof ---------- */
.stat-band{
  background:var(--ink);border-radius:20px;padding:clamp(30px,4vw,52px) clamp(24px,4vw,56px);
  position:relative;overflow:hidden;
}
.stat-band::after{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;z-index:1}
.stat-num{font-size:clamp(28px,3.6vw,42px);font-weight:700;color:#fff;line-height:1.05;font-variant-numeric:tabular-nums;font-family:"Noto Serif SC",serif}
.stat-num small{font-size:15px;font-weight:600;color:var(--accent);margin-left:2px}
.stat-label{font-size:13px;color:rgba(255,255,255,.66);margin-top:8px;line-height:1.6}
.quote-card{padding:26px 24px;height:100%;display:flex;flex-direction:column;gap:14px}
.quote-text{font-size:14.5px;line-height:1.9;color:var(--ink-2)}
.quote-person{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:6px}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:none;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand-deep);font-size:14px;font-weight:600;
  font-family:"Noto Serif SC",serif;
}
.quote-name{font-size:14.5px;font-weight:600;color:var(--ink)}
.quote-role{font-size:12.5px;color:var(--muted)}
.logo-strip{
  display:grid;grid-template-columns:repeat(6,1fr);gap:16px;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:22px 0;margin-top:clamp(32px,4vw,48px);
}
.logo-item{
  text-align:center;font-size:14px;color:var(--muted);opacity:.6;
  font-family:"Noto Serif SC",serif;letter-spacing:.04em;transition:opacity .2s ease;
}
.logo-item:hover{opacity:1}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--sh-1);
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.news-card:hover{border-color:rgba(192,86,47,.3);transform:translateY(-2px);box-shadow:var(--sh-2)}
.news-thumb{aspect-ratio:4/3;background:var(--brand-soft);overflow:hidden;display:block}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.news-card:hover .news-thumb img{transform:scale(1.02)}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-title{
  font-family:"Noto Serif SC",serif;font-size:16.5px;font-weight:700;color:var(--ink);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s ease;
}
.news-card:hover .news-title{color:var(--brand)}
.news-excerpt{
  font-size:14px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  display:flex;justify-content:space-between;align-items:center;gap:12px;
  font-size:13px;color:var(--muted);margin-top:auto;padding-top:8px;border-top:1px dashed var(--line);
}
.news-empty{
  grid-column:1/-1;border:1px dashed var(--line);border-radius:var(--r-card);
  background:var(--surface);padding:44px 24px;text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:16px;
}
.news-empty .ph{
  width:88px;height:66px;border:1px solid var(--line);border-radius:12px;
  display:grid;place-items:center;color:var(--brand);background:var(--brand-soft);font-size:20px;
}
.news-empty p{font-size:14.5px;color:var(--muted)}

/* ---------- faq ---------- */
.faq-list{max-width:768px;margin:0 auto;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;min-height:52px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  text-align:left;padding:18px 4px;font-size:15.5px;font-weight:600;color:var(--ink);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand)}
.faq-icon{flex:none;color:var(--brand);font-size:13px;transition:transform .2s ease}
.faq-item.open .faq-icon{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease}
.faq-a-inner{padding:0 4px 20px;font-size:14.5px;line-height:1.85;color:var(--muted)}

/* ---------- cta ---------- */
.cta-block{position:relative;overflow:hidden;background:var(--ink)}
.cta-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:.42;
}
.cta-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(23,50,44,.86),rgba(23,50,44,.68))}
.cta-inner{position:relative;z-index:1;text-align:center;padding:clamp(52px,7vw,96px) 0}
.cta-inner h2{color:#fff;font-size:clamp(22px,3vw,32px);line-height:1.35;max-width:820px;margin:0 auto}
.cta-inner p{color:rgba(255,255,255,.76);font-size:15px;margin:16px auto 0;max-width:600px;line-height:1.85}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:30px}
.cta-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:26px}
.cta-tag{
  font-size:12.5px;color:rgba(255,255,255,.82);border:1px solid rgba(255,255,255,.22);
  border-radius:999px;padding:5px 14px;display:inline-flex;align-items:center;gap:6px;
}
.cta-tag i{color:var(--accent);font-size:11px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:clamp(48px,6vw,72px) 0 26px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:clamp(24px,3vw,44px)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .logo-mark{background:var(--brand)}
.footer-brand span{color:#fff;font-family:"Noto Serif SC",serif;font-weight:700;font-size:18px}
.footer-intro{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);max-width:320px}
.footer-contact{margin-top:16px;font-size:13.5px;line-height:2;color:rgba(255,255,255,.7)}
.footer-contact i{color:var(--accent);width:16px;margin-right:6px}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;font-family:"Noto Serif SC",serif}
.footer-link{display:block;font-size:14px;line-height:2.1;color:rgba(255,255,255,.72);transition:color .2s ease}
.footer-link:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  margin-top:clamp(32px,4vw,52px);padding-top:22px;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;align-items:center;gap:16px;font-size:13px;
}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:#fff;text-decoration:underline}
.to-top{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.8);
  border:1px solid rgba(255,255,255,.22);border-radius:999px;padding:7px 16px;
  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,.4)}

/* ---------- fixed bar ---------- */
.convert-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:var(--surface);border-top:1px solid var(--line);
  box-shadow:0 -10px 28px -22px rgba(23,50,44,.6);
}
.convert-inner{display:flex;align-items:center;gap:16px;height:60px}
.convert-text{font-size:14px;color:var(--ink);display:flex;align-items:center;gap:8px}
.convert-text i{color:var(--brand);font-size:13px}
.convert-actions{margin-left:auto;display:flex;align-items:center;gap:8px}
.convert-close{
  width:36px;height:36px;border-radius:9px;color:var(--muted);
  display:grid;place-items:center;transition:background .2s ease,color .2s ease;
}
.convert-close:hover{background:var(--brand-soft);color:var(--brand-deep)}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .cmd-search{width:200px}
  .cmd-search:focus-within{width:260px}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .cmd-search{display:none}
  .hamburger{display:inline-flex}
  .header-actions .link-quiet{display:none}
  .hero-grid{grid-template-columns:1fr}
  .hero-media{order:2}
  .scene-row{grid-template-columns:1fr;gap:24px}
  .scene-row.reverse .scene-media{order:0}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .logo-strip{grid-template-columns:repeat(3,1fr);gap:18px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .trust-bar{grid-template-columns:repeat(2,1fr);gap:22px}
  .news-grid{grid-template-columns:1fr}
  .media-note{left:10px;bottom:10px;padding:10px 14px}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .cta-actions .btn{width:100%}
}
@media (max-width:520px){
  body{padding-bottom:64px}
  .container{padding:0 18px}
  .logo-text{font-size:17px}
  .header-inner{height:56px}
  .trust-bar{grid-template-columns:1fr 1fr}
  .stat-grid{grid-template-columns:1fr 1fr;gap:22px}
  .logo-strip{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .convert-inner{height:64px;gap:10px}
  .convert-text{font-size:13.5px}
  .convert-text span{display:none}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important}
}
.reveal{opacity:0;transform:translateY(12px);transition:opacity .22s ease,transform .22s ease}
.reveal.is-in{opacity:1;transform:translateY(0)}

/* roulang page: article */
:root{
  --brand:#C0562F;
  --brand-deep:#8F3D1F;
  --brand-soft:#F6E7DE;
  --ink:#17322C;
  --ink-2:#3D4C48;
  --accent:#E0A24A;
  --bg:#FBF8F3;
  --surface:#FFFFFF;
  --line:#E7DFD4;
  --muted:#6B6560;
  --ok:#2F7D5B;
  --warn:#B4453A;
  --r-card:16px;
  --r-sm:12px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(23,50,44,.05),0 8px 24px -12px rgba(23,50,44,.12);
  --sh-2:0 2px 6px rgba(23,50,44,.08),0 18px 44px -20px rgba(23,50,44,.24);
  --serif:"Noto Serif SC","Source Han Serif SC","PingFang SC","HarmonyOS Sans SC",serif;
  --sans:"Noto Sans SC","PingFang 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;padding:0;background:var(--bg);color:var(--ink-2);
  font-family:var(--sans);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
input{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-family:var(--serif);color:var(--ink);font-weight:700;letter-spacing:-.01em;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ===== Header / Nav ===== */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(251,248,243,.92);
  backdrop-filter:saturate(1.4) blur(10px);
  border-bottom:1px solid var(--line);transition:box-shadow .2s ease,background .2s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 30px -18px rgba(23,50,44,.28);background:rgba(251,248,243,.97);}
.header-inner{display:flex;align-items:center;gap:24px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand);color:#fff;font-size:15px;box-shadow:var(--sh-1);
}
.brand-name{font-family:var(--serif);font-size:19px;font-weight:700;color:var(--ink);letter-spacing:.01em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:64px;padding:0 12px;
  font-size:15px;font-weight:500;color:var(--ink-2);transition:color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:16px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.command-search{position:relative;width:240px;transition:width .22s ease;}
.command-search:focus-within{width:320px;}
.command-search input{
  width:100%;height:40px;border-radius:var(--r-btn);border:1px solid var(--line);background:var(--surface);
  padding:0 60px 0 36px;font-size:14px;color:var(--ink);transition:border-color .18s ease,box-shadow .18s ease;
}
.command-search input::placeholder{color:#9A938C;}
.command-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(192,86,47,.14);}
.command-search .search-icon{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:13px;}
.command-search .kbd{
  position:absolute;right:8px;top:50%;transform:translateY(-50%);
  font-size:11px;color:var(--muted);border:1px solid var(--line);background:var(--bg);
  border-radius:6px;padding:2px 6px;line-height:1.2;
}
.search-panel{
  position:absolute;top:48px;left:0;right:0;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-sm);box-shadow:var(--sh-2);padding:8px;opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s;z-index:70;
}
.command-search:focus-within .search-panel{opacity:1;visibility:visible;transform:translateY(0);}
.search-panel a{display:block;padding:9px 10px;border-radius:8px;font-size:14px;color:var(--ink-2);}
.search-panel a:hover{background:var(--brand-soft);color:var(--brand-deep);}
.search-panel .panel-title{font-size:12px;color:var(--muted);padding:4px 10px 6px;}
.text-entry{font-size:14px;font-weight:500;color:var(--ink-2);padding:8px 4px;transition:color .18s ease;}
.text-entry:hover{color:var(--brand);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-btn);border:1px solid var(--line);
  background:var(--surface);color:var(--ink);font-size:16px;align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-ghost{background:transparent;color:var(--brand);border:1px solid rgba(192,86,47,.45);}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.45;pointer-events:none;}
.btn-outline{background:var(--surface);color:var(--ink-2);border:1px solid var(--line);}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);}
.text-cta{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);transition:color .18s ease;}
.text-cta i{transition:transform .18s ease;}
.text-cta:hover{color:var(--brand-deep);text-decoration:underline;text-underline-offset:4px;}
.text-cta:hover i{transform:translateX(2px);}

/* ===== Mobile drawer ===== */
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);background:var(--surface);z-index:90;
  transform:translateX(102%);transition:transform .26s ease;padding:20px;overflow-y:auto;
  box-shadow:-18px 0 40px -20px rgba(23,50,44,.4);display:flex;flex-direction:column;gap:6px;
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(23,50,44,.4);z-index:85;opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer-close{width:40px;height:40px;border-radius:var(--r-btn);border:1px solid var(--line);color:var(--ink);}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;height:48px;padding:0 14px;
  border-radius:var(--r-sm);font-size:15px;font-weight:500;color:var(--ink-2);border:1px solid transparent;
}
.drawer-link:hover,.drawer-link.active{background:var(--brand-soft);color:var(--brand-deep);border-color:rgba(192,86,47,.24);}
.drawer-search{position:relative;margin-bottom:10px;}
.drawer-search input{
  width:100%;height:44px;border-radius:var(--r-btn);border:1px solid var(--line);padding:0 14px 0 36px;font-size:14px;
}
.drawer-search i{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:13px;}
.drawer-cta{margin-top:14px;}

/* ===== Article layout ===== */
.crumbs{padding:20px 0 0;font-size:14px;color:var(--muted);}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumbs li{display:flex;align-items:center;gap:8px;min-width:0;}
.crumbs a{color:var(--ink-2);transition:color .18s ease;}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:#C4BCB2;}
.crumbs .current{color:var(--muted);max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

.article-wrap{
  display:grid;grid-template-columns:minmax(0,1fr);gap:48px;
  padding:32px 0 88px;
}
@media (min-width:1280px){
  .article-wrap{grid-template-columns:minmax(0,1fr) 300px;gap:56px;}
}
.article-main{max-width:820px;width:100%;}

.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:12.5px;font-weight:600;letter-spacing:.02em;
}
.badge i{font-size:11px;}

.article-head{padding:18px 0 0;}
.article-head h1{
  margin:16px 0 0;font-size:32px;line-height:1.35;letter-spacing:-.01em;color:var(--ink);
}
@media (min-width:768px){.article-head h1{font-size:38px;}}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;margin-top:18px;
  font-size:13.5px;color:var(--muted);line-height:1.7;
}
.article-meta span{display:inline-flex;align-items:center;gap:6px;}
.article-meta i{color:var(--brand);font-size:12px;}
.article-rule{height:1px;background:var(--line);margin:26px 0 0;}

.article-cover{
  margin:28px 0 0;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:16/9;background:var(--brand-soft);position:relative;
}
.article-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.article-cover:hover img{transform:scale(1.02);}
.cover-fallback{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  color:var(--brand);font-size:34px;background:var(--brand-soft);
}

.article-body{
  margin-top:32px;font-size:16.5px;line-height:1.92;color:var(--ink-2);
}
.article-body p{margin:0 0 1.25em;}
.article-body h2{
  font-size:23px;line-height:1.45;margin:2em 0 .7em;padding-left:14px;position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;width:4px;height:.9em;border-radius:2px;background:var(--brand);
}
.article-body h3{font-size:19px;line-height:1.5;margin:1.7em 0 .6em;}
.article-body h4{font-size:17px;margin:1.4em 0 .5em;}
.article-body ul{list-style:none;margin:0 0 1.25em;padding:0;}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:.55em;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--brand);opacity:.75;
}
.article-body ol{list-style:decimal;margin:0 0 1.25em 1.4em;}
.article-body ol li{margin-bottom:.55em;padding-left:4px;}
.article-body ol li::marker{color:var(--brand);font-weight:700;}
.article-body blockquote{
  margin:1.6em 0;padding:16px 22px;border-left:3px solid var(--brand);background:var(--brand-soft);
  border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--ink);font-size:16px;
}
.article-body img{border-radius:var(--r-sm);margin:1.6em auto;box-shadow:var(--sh-1);}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;line-height:1.7;}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;background:var(--surface);
  border-radius:var(--r-sm);overflow:hidden;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;line-height:1.7;}
.article-body th{background:#F7F1E9;color:var(--ink);font-weight:600;}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-deep);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0;}
.article-body strong{color:var(--ink);font-weight:600;}

.empty-state{
  margin-top:34px;padding:48px 24px;text-align:center;background:var(--surface);
  border:1px dashed var(--line);border-radius:var(--r-card);
}
.empty-icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:50%;background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;color:var(--brand);font-size:24px;
}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--muted);font-size:15px;margin:0 0 22px;}

.tail-block{margin-top:36px;padding-top:26px;border-top:1px solid var(--line);}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.tag-row .tag-label{font-size:13px;color:var(--muted);}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 13px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);color:var(--ink-2);font-size:13px;
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.tag:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);}
.back-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}

/* ===== Aside ===== */
.article-aside{display:none;}
@media (min-width:1280px){.article-aside{display:block;position:sticky;top:88px;align-self:start;}}
.aside-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-1);
}
.aside-card + .aside-card{margin-top:20px;}
.aside-title{font-size:15px;font-weight:600;color:var(--ink);margin-bottom:14px;font-family:var(--serif);}
.mini-item{display:flex;gap:12px;padding:10px 0;border-bottom:1px dashed var(--line);}
.mini-item:last-child{border-bottom:0;padding-bottom:0;}
.mini-thumb{
  width:64px;height:48px;flex-shrink:0;border-radius:8px;overflow:hidden;background:var(--brand-soft);
}
.mini-thumb img{width:100%;height:100%;object-fit:cover;}
.mini-title{font-size:14px;line-height:1.55;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .18s ease;}
.mini-item:hover .mini-title{color:var(--brand);}
.mini-cat{font-size:12px;color:var(--muted);margin-top:4px;}
.aside-cta{background:var(--ink);border-color:var(--ink);}
.aside-cta .aside-title{color:#fff;}
.aside-cta p{font-size:13.5px;color:rgba(255,255,255,.72);line-height:1.75;margin:0 0 16px;}

/* ===== Related ===== */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.section-head h2{font-size:26px;line-height:1.3;}
.section-head .sub{font-size:14px;color:var(--muted);margin-top:8px;line-height:1.75;}
.related{margin-top:64px;}
.card-grid{display:grid;grid-template-columns:1fr;gap:20px;margin-top:26px;}
@media (min-width:640px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--sh-1);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.card:hover{transform:translateY(-2px);border-color:rgba(192,86,47,.3);box-shadow:var(--sh-2);}
.card-media{aspect-ratio:4/3;background:var(--brand-soft);overflow:hidden;position:relative;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease;}
.card:hover .card-media img{transform:scale(1.02);}
.card-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:18px;line-height:1.45;}
.card-body h3 a{color:var(--ink);transition:color .18s ease;}
.card-body h3 a:hover{color:var(--brand);}
.card-desc{font-size:14px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:0;}
.card-foot{margin-top:auto;padding-top:12px;border-top:1px dashed var(--line);display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--muted);}

/* ===== Consult strip ===== */
.consult-strip{
  margin-top:56px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;
  box-shadow:var(--sh-1);
}
.consult-strip h3{font-size:21px;line-height:1.4;}
.consult-strip p{font-size:14px;color:var(--muted);margin:8px 0 0;line-height:1.75;}
.consult-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ===== Float tools ===== */
.float-tools{
  position:fixed;right:20px;bottom:28px;z-index:55;display:flex;flex-direction:column;gap:10px;
}
.float-btn{
  width:46px;height:46px;border-radius:50%;background:var(--surface);border:1px solid var(--line);
  color:var(--ink);display:flex;align-items:center;justify-content:center;font-size:15px;
  box-shadow:var(--sh-1);transition:transform .18s ease,background .18s ease,color .18s ease;
}
.float-btn:hover{transform:translateY(-2px);color:var(--brand);border-color:var(--brand);}
.float-btn-brand{background:var(--brand);border-color:var(--brand);color:#fff;}
.float-btn-brand:hover{background:var(--brand-deep);color:#fff;}

/* ===== Footer ===== */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:44px;}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-family:var(--serif);font-size:19px;font-weight:700;margin-bottom:16px;}
.footer-brand .logo-mark{background:var(--brand);}
.footer-intro{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);margin:0 0 18px;max-width:340px;}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:13.5px;}
.footer-contact i{color:var(--brand);margin-right:8px;}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-link{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:6px 0;transition:color .18s ease;}
.footer-link:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;font-size:13px;
  color:rgba(255,255,255,.6);
}
.to-top{display:inline-flex;align-items:center;gap:8px;color:rgba(255,255,255,.72);transition:color .18s ease;}
.to-top:hover{color:#fff;}

/* ===== Responsive ===== */
@media (max-width:1023px){
  .main-nav{display:none;}
  .command-search{display:none;}
  .text-entry{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{height:56px;}
}
@media (max-width:640px){
  .container{padding:0 20px;}
  .article-wrap{padding:24px 0 64px;gap:32px;}
  .article-head h1{font-size:27px;}
  .article-body{font-size:16px;line-height:1.88;}
  .article-body h2{font-size:21px;}
  .article-body h3{font-size:18px;}
  .section-head h2{font-size:22px;}
  .consult-strip{padding:22px;}
  .consult-actions .btn{width:100%;}
  .float-tools{right:14px;bottom:18px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --brand:#C0562F;
  --brand-deep:#8F3D1F;
  --brand-soft:#F6E7DE;
  --ink:#17322C;
  --ink-2:#3D4C48;
  --accent:#E0A24A;
  --bg:#FBF8F3;
  --surface:#FFFFFF;
  --line:#E7DFD4;
  --muted:#6B6560;
  --ok:#2F7D5B;
  --warn:#B4453A;
  --r-card:16px;
  --r-sm:12px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(23,50,44,.05), 0 8px 24px -12px rgba(23,50,44,.12);
  --sh-2:0 2px 4px rgba(23,50,44,.07), 0 18px 42px -18px rgba(23,50,44,.24);
  --serif:"Noto Serif SC","Songti SC","PingFang SC",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-2);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  padding-bottom:72px;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{font-family:var(--serif);color:var(--ink);margin:0;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:44px}
.section-head h2{font-size:32px;line-height:1.3;letter-spacing:-.01em}
.section-head .sub{margin-top:12px;font-size:15px;color:var(--muted);line-height:1.8;max-width:640px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:500;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:5px 14px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}

.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;z-index:99}
.skip-link:focus{left:0}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(251,248,243,.92);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(160%) blur(10px);
  transition:box-shadow .2s ease,background .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2);background:rgba(251,248,243,.98)}
.header-inner{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:15px;
  box-shadow:0 6px 14px -8px rgba(192,86,47,.8);
}
.brand-name{font-family:var(--serif);font-size:19px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:64px;
  padding:0 14px;font-size:15px;font-weight:500;color:var(--ink-2);
  transition:color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:14px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand)}
.nav-link.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}

.command-search{
  position:relative;display:flex;align-items:center;gap:8px;
  height:40px;width:240px;padding:0 12px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-btn);
  transition:width .22s ease,border-color .18s ease,box-shadow .18s ease;
}
.command-search:focus-within{width:320px;border-color:var(--brand);box-shadow:0 0 0 3px rgba(192,86,47,.12)}
.command-search i{color:var(--muted);font-size:13px}
.command-search input{
  flex:1;border:0;outline:none;background:transparent;
  font-size:14px;color:var(--ink);font-family:var(--sans);
}
.command-search input::placeholder{color:var(--muted)}
.command-search .kbd{
  font-size:11px;color:var(--muted);border:1px solid var(--line);
  border-radius:6px;padding:1px 6px;background:var(--bg);flex-shrink:0;
}
.search-panel{
  position:absolute;top:calc(100% + 8px);left:0;right:0;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);
  box-shadow:var(--sh-2);padding:8px;display:none;
}
.command-search:focus-within .search-panel{display:block}
.search-panel a{display:block;padding:8px 10px;border-radius:8px;font-size:14px;color:var(--ink-2)}
.search-panel a:hover{background:var(--brand-soft);color:var(--brand-deep)}

.link-quiet{font-size:14px;font-weight:500;color:var(--ink-2);padding:8px 4px;transition:color .18s ease}
.link-quiet:hover{color:var(--brand)}

.hamburger{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--surface);
  border-radius:var(--r-btn);color:var(--ink);font-size:16px;cursor:pointer;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:500;cursor:pointer;border:1px solid transparent;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px -12px rgba(192,86,47,.9)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 14px 28px -14px rgba(143,61,31,.9)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px -10px rgba(143,61,31,.8)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand-soft);color:var(--brand-deep)}
.btn-ghost:active{transform:translateY(1px)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:var(--brand-soft);color:var(--brand-deep);transform:translateY(-1px)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-outline-light:hover{background:rgba(255,255,255,.14);border-color:#fff}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:14px;font-weight:500;
}
.btn-text i{transition:transform .18s ease}
.btn-text:hover{text-decoration:underline;color:var(--brand-deep)}
.btn-text:hover i{transform:translateX(2px)}

/* ---------- 页头 banner ---------- */
.page-head{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.page-head-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  filter:saturate(.9);
}
.page-head-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(23,50,44,.62) 0%,rgba(23,50,44,.48) 55%,rgba(23,50,44,.30) 100%)}
.page-head-inner{position:relative;z-index:2;padding:64px 0 56px;min-height:300px;display:flex;flex-direction:column;justify-content:center}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.78);margin-bottom:20px;flex-wrap:wrap}
.breadcrumb a{color:rgba(255,255,255,.78)}
.breadcrumb a:hover{color:#fff;text-decoration:underline}
.breadcrumb .sep{opacity:.6}
.breadcrumb .current{color:rgba(255,255,255,.62)}
.page-head h1{color:#fff;font-size:42px;line-height:1.28;letter-spacing:-.01em;max-width:860px}
.page-head .lead{color:rgba(255,255,255,.88);font-size:17px;line-height:1.8;margin-top:18px;max-width:680px}
.page-head .head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.head-tag{
  font-size:13px;color:#fff;background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.28);border-radius:999px;padding:5px 14px;
}

/* ---------- 简介 ---------- */
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px 48px}
.intro-grid p{font-size:16.5px;line-height:1.95;color:var(--ink-2)}
.intro-grid p:first-child{grid-column:1 / -1;font-size:18px;color:var(--ink);line-height:1.85}

/* ---------- 图文交替 ---------- */
.alt-list{border-top:1px solid var(--line)}
.alt-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:56px 0;border-bottom:1px solid var(--line);
}
.alt-row.reverse .alt-media{order:2}
.alt-row.reverse .alt-body{order:1}
.alt-index{
  font-family:var(--serif);font-size:15px;font-weight:700;color:var(--brand);
  letter-spacing:.14em;margin-bottom:12px;display:block;
}
.alt-body h3{font-size:23px;line-height:1.42;margin-bottom:14px}
.alt-body p{font-size:16px;line-height:1.9;color:var(--ink-2)}
.point-list{margin:20px 0 24px;display:flex;flex-direction:column;gap:12px}
.point-list li{display:flex;gap:10px;font-size:15.5px;line-height:1.75;color:var(--ink-2)}
.point-list li i{color:var(--brand);font-size:13px;margin-top:8px}
.media{
  position:relative;background:var(--brand-soft);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
}
.media img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease}
.media:hover img{transform:scale(1.02)}
.media .ph{
  position:absolute;inset:0;display:grid;place-items:center;
  color:var(--brand);font-size:26px;opacity:.7;
}
.ratio-16x10{aspect-ratio:16/10}

/* ---------- 要点网格 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.card:hover{border-color:rgba(192,86,47,.3);transform:translateY(-2px);box-shadow:var(--sh-2)}
.card h3{font-size:19px;line-height:1.45;margin-bottom:10px}
.card p{font-size:15px;line-height:1.85;color:var(--ink-2)}
.card-icon{
  width:44px;height:44px;border-radius:12px;background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-size:17px;margin-bottom:18px;
}
.card-num{font-family:var(--serif);font-size:14px;font-weight:700;color:var(--brand);letter-spacing:.14em;margin-bottom:14px;display:block}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:500;color:var(--brand);background:var(--brand-soft);
  border-radius:999px;padding:4px 12px;
}
.badge.badge-ok{color:var(--ok);background:rgba(47,125,91,.1)}

/* ---------- 指标条 ---------- */
.metrics{
  background:var(--ink);border-radius:20px;padding:44px 48px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:28px;
  border-top:3px solid var(--brand);
}
.metric .num{
  font-family:var(--serif);font-size:40px;font-weight:700;color:#fff;
  line-height:1.1;font-variant-numeric:tabular-nums;
}
.metric .num span{font-size:18px;font-weight:600;color:var(--accent);margin-left:4px}
.metric .label{font-size:14px;color:rgba(255,255,255,.72);margin-top:10px;line-height:1.7}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 4px;min-height:56px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:700;color:var(--ink);font-family:var(--sans);
  transition:color .18s ease;
}
.faq-q::-webkit-details-marker{display:none}
.faq-q:hover{color:var(--brand)}
.faq-icon{
  width:28px;height:28px;flex-shrink:0;border-radius:50%;
  border:1px solid var(--line);display:grid;place-items:center;
  font-size:12px;color:var(--brand);transition:transform .2s ease,background .2s ease;
}
.faq-item[open] .faq-icon{transform:rotate(180deg);background:var(--brand-soft)}
.faq-a{padding:0 4px 22px;font-size:15px;line-height:1.85;color:var(--ink-2)}
.faq-a p{max-width:720px}

/* ---------- 底部 CTA ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:20px;border:1px solid var(--line)}
.cta-band-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.cta-band-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(105deg,rgba(23,50,44,.88) 0%,rgba(23,50,44,.62) 60%,rgba(143,61,31,.55) 100%)}
.cta-band-inner{position:relative;z-index:2;padding:64px 56px}
.cta-band h2{color:#fff;font-size:30px;line-height:1.35;max-width:760px}
.cta-band p{color:rgba(255,255,255,.82);font-size:16px;line-height:1.85;margin-top:16px;max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.cta-tags{display:flex;flex-wrap:wrap;gap:16px;margin-top:28px}
.cta-tags span{font-size:13.5px;color:rgba(255,255,255,.85);display:inline-flex;align-items:center;gap:7px}
.cta-tags i{color:var(--accent)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);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:10px;color:#fff;font-family:var(--serif);font-size:19px;font-weight:700;margin-bottom:16px}
.footer-brand .logo-mark{width:32px;height:32px;font-size:14px}
.footer-intro{font-size:14px;line-height:1.85;color:rgba(255,255,255,.68);max-width:320px}
.footer-contact{margin-top:20px;display:flex;flex-direction:column;gap:10px;font-size:13.5px;color:rgba(255,255,255,.62)}
.footer-contact i{color:var(--accent);margin-right:8px}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:18px}
.footer-link{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:6px 0;transition:color .18s ease}
.footer-link:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.56);
}
.to-top{font-size:13.5px;color:rgba(255,255,255,.72);display:inline-flex;align-items:center;gap:8px}
.to-top:hover{color:#fff;text-decoration:underline}

/* ---------- 底部固定转化条 ---------- */
.bottom-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(255,255,255,.97);border-top:1px solid var(--line);
  box-shadow:0 -10px 30px -18px rgba(23,50,44,.4);
  transform:translateY(110%);transition:transform .24s ease;
}
.bottom-bar.is-visible{transform:translateY(0)}
.bottom-bar.is-closed{display:none}
.bottom-bar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:60px}
.bottom-text{font-size:14.5px;color:var(--ink);font-weight:500}
.bottom-actions{display:flex;align-items:center;gap:10px}
.bar-close{
  width:34px;height:34px;border-radius:50%;border:1px solid var(--line);
  background:var(--surface);color:var(--muted);cursor:pointer;font-size:13px;
  transition:background .18s ease,color .18s ease;
}
.bar-close:hover{background:var(--brand-soft);color:var(--brand-deep)}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:80;display:none;
}
.drawer.is-open{display:block}
.drawer-mask{position:absolute;inset:0;background:rgba(23,50,44,.4)}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(86vw,340px);
  background:var(--surface);padding:22px;overflow-y:auto;
  box-shadow:-20px 0 50px -24px rgba(23,50,44,.5);
  display:flex;flex-direction:column;gap:6px;
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.drawer-search{
  display:flex;align-items:center;gap:10px;height:46px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-sm);background:var(--bg);margin-bottom:18px;
}
.drawer-search i{color:var(--muted);font-size:13px}
.drawer-search input{flex:1;border:0;background:transparent;outline:none;font-size:14px;color:var(--ink);font-family:var(--sans)}
.drawer-link{
  display:block;padding:14px 12px;border-radius:var(--r-sm);font-size:15.5px;font-weight:500;
  color:var(--ink-2);border-bottom:1px solid var(--line);
}
.drawer-link:hover{background:var(--brand-soft);color:var(--brand-deep)}
.drawer-link.active{color:var(--brand);background:var(--brand-soft)}
.drawer-cta{margin-top:22px}
.drawer-cta .btn{width:100%}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .main-nav{display:none}
  .command-search{width:200px}
  .command-search:focus-within{width:240px}
  .hamburger{display:grid;place-items:center}
  .page-head h1{font-size:34px}
  .intro-grid{grid-template-columns:1fr}
  .alt-row{gap:36px;padding:48px 0}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .metrics{grid-template-columns:repeat(2,1fr);padding:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:768px){
  body{font-size:15.5px;padding-bottom:64px}
  .container{padding:0 20px}
  .section{padding:64px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px}
  .section-head h2{font-size:25px}
  .link-quiet,.command-search{display:none}
  .alt-row{grid-template-columns:1fr;gap:24px}
  .alt-row.reverse .alt-media{order:0}
  .alt-row.reverse .alt-body{order:0}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .metrics{grid-template-columns:repeat(2,1fr);padding:28px 24px;gap:22px;border-radius:16px}
  .metric .num{font-size:32px}
  .cta-band-inner{padding:44px 24px}
  .cta-band h2{font-size:23px}
  .page-head-inner{padding:44px 0 40px;min-height:240px}
  .page-head h1{font-size:28px}
  .page-head .lead{font-size:15.5px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .bottom-bar-inner{height:56px}
  .bottom-text{font-size:13.5px;max-width:56%}
}
@media (max-width:520px){
  .page-head h1{font-size:24px}
  .metrics{grid-template-columns:1fr 1fr;gap:18px}
  .metric .num{font-size:28px}
  .cta-actions .btn{width:100%}
  .bottom-text{display:none}
  .bottom-bar-inner{justify-content:flex-end}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: category3 */
:root{
  --brand:#C0562F;
  --brand-deep:#8F3D1F;
  --brand-soft:#F6E7DE;
  --ink:#17322C;
  --ink-2:#3D4C48;
  --accent:#E0A24A;
  --bg:#FBF8F3;
  --surface:#FFFFFF;
  --line:#E7DFD4;
  --muted:#6B6560;
  --success:#2F7D5B;
  --warn:#B4453A;
  --r-card:16px;
  --r-sm:12px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(23,50,44,.05), 0 8px 24px -12px rgba(23,50,44,.12);
  --sh-2:0 2px 6px rgba(23,50,44,.07), 0 18px 36px -18px rgba(23,50,44,.20);
  --serif:"Noto Serif SC","Songti SC","Source Han Serif SC",serif;
  --sans:"Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.9;
  color:var(--ink);
  background:var(--bg);
  padding-bottom:72px;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font-family:inherit}
input{font-family:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.prose p{color:var(--ink-2);margin:0}
.prose p + p{margin-top:1.25em}
.hero-title,.sec-title,.card-title,.sub-title{font-family:var(--serif);font-weight:700;color:var(--ink);margin:0}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(251,248,243,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 22px -14px rgba(23,50,44,.35)}
.header-inner{display:flex;align-items:center;gap:16px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:32px;height:32px;border-radius:9px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:13px;flex-shrink:0;
}
.brand-text{font-family:var(--serif);font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:8px}
.nav-link{
  position:relative;padding:8px 11px;font-size:14.5px;font-weight:500;color:var(--ink-2);
  border-radius:8px;transition:color .18s ease;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:11px;right:11px;bottom:1px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:center;transition:transform .2s ease;
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand)}
.nav-link.active::after{transform:scaleX(1)}
.nav-link:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.cmd-search{
  position:relative;display:flex;align-items:center;gap:8px;
  width:220px;height:40px;padding:0 12px;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-btn);
  transition:width .24s ease,border-color .18s ease,box-shadow .18s ease;
}
.cmd-search:focus-within{width:300px;border-color:var(--brand);box-shadow:0 0 0 3px rgba(192,86,47,.12)}
.cmd-search .fa-magnifying-glass{font-size:13px;color:var(--muted)}
.cmd-search input{
  flex:1;min-width:0;border:0;outline:0;background:transparent;
  font-size:14px;color:var(--ink);
}
.cmd-search input::placeholder{color:var(--muted)}
.cmd-search kbd{
  font-family:var(--sans);font-size:11px;color:var(--muted);
  border:1px solid var(--line);border-radius:6px;padding:1px 5px;background:#FBF8F3;
}
.cmd-panel{
  position:absolute;top:calc(100% + 8px);left:0;right:0;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-sm);box-shadow:var(--sh-2);
  padding:8px;display:none;z-index:5;
}
.cmd-search:focus-within .cmd-panel{display:block}
.cmd-panel-title{font-size:12px;color:var(--muted);padding:4px 8px}
.cmd-panel a{display:block;font-size:14px;color:var(--ink-2);padding:7px 8px;border-radius:8px}
.cmd-panel a:hover{background:var(--brand-soft);color:var(--brand-deep)}
.text-link{font-size:14.5px;font-weight:500;color:var(--ink-2);transition:color .18s ease}
.text-link:hover{color:var(--brand)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--ink);place-items:center;
  cursor:pointer;transition:background .18s ease;
}
.nav-toggle:hover{background:var(--brand-soft)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(23,50,44,.4);z-index:70;
  opacity:0;pointer-events:none;transition:opacity .25s ease;
}
.drawer-mask.open{opacity:1;pointer-events:auto}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:84%;max-width:340px;background:#fff;z-index:80;
  transform:translateX(100%);transition:transform .26s ease;padding:20px;overflow-y:auto;
  box-shadow:-12px 0 32px -18px rgba(23,50,44,.35);
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-search{display:flex;align-items:center;gap:8px;height:44px;padding:0 12px;border:1px solid var(--line);border-radius:var(--r-btn);background:#FBF8F3;margin-bottom:18px}
.drawer-search input{border:0;outline:0;background:transparent;flex:1;font-size:14px;color:var(--ink)}
.drawer-nav a{
  display:block;padding:13px 12px;font-size:15.5px;font-weight:500;color:var(--ink-2);
  border-radius:var(--r-sm);transition:background .18s ease,color .18s ease;
}
.drawer-nav a:hover{background:var(--brand-soft);color:var(--brand-deep)}
.drawer-nav a.active{color:var(--brand);background:var(--brand-soft)}
.drawer-cta{margin-top:20px;display:block}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:500;cursor:pointer;white-space:nowrap;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:none;box-shadow:none}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{background:var(--brand-soft);border-color:rgba(192,86,47,.3);color:var(--brand-deep)}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.link-cta{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14.5px;font-weight:500;
}
.link-cta i{font-size:12px;transition:transform .18s ease}
.link-cta:hover i{transform:translateX(2px)}
.link-cta:hover{text-decoration:underline;text-underline-offset:4px}
.link-cta:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px}

/* ============ 页头 ============ */
.page-hero{position:relative;display:flex;align-items:flex-end;min-height:300px;padding:64px 0 46px;overflow:hidden}
.page-hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.page-hero-mask{position:absolute;inset:0;background:linear-gradient(96deg,rgba(23,50,44,.74) 0%,rgba(23,50,44,.52) 62%,rgba(23,50,44,.40) 100%)}
.page-hero-inner{position:relative;z-index:2;color:#fff}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.74);margin-bottom:16px}
.breadcrumb a{color:rgba(255,255,255,.84)}
.breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.breadcrumb .sep{opacity:.55}
.breadcrumb .current{color:#fff}
.hero-title{color:#fff;font-size:clamp(30px,4.2vw,50px);line-height:1.24;letter-spacing:-.01em;max-width:880px}
.hero-sub{margin:18px 0 0;font-size:16.5px;line-height:1.8;color:rgba(255,255,255,.86);max-width:640px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.hero-tag{
  display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 14px;border-radius:999px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.26);
  color:#fff;font-size:13px;backdrop-filter:blur(4px);
}

/* ============ 通用板块 ============ */
.section{padding:88px 0}
.section.alt{background:var(--surface)}
.section.tint{background:var(--brand-soft)}
.section-head{max-width:760px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  letter-spacing:.1em;color:var(--brand);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:2px}
.sec-title{font-size:clamp(24px,2.7vw,32px);line-height:1.32;letter-spacing:-.01em}
.sec-desc{margin-top:16px;font-size:16px;color:var(--ink-2);max-width:680px}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}

/* ============ 卡片 ============ */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.card:hover{border-color:rgba(192,86,47,.3);transform:translateY(-2px);box-shadow:var(--sh-2)}
.card-title{font-size:20px;line-height:1.4}
.card-num{
  font-family:var(--serif);font-size:15px;font-weight:700;color:var(--brand);
  letter-spacing:.08em;margin-bottom:14px;display:block;
}
.card p{color:var(--ink-2);font-size:15px;line-height:1.85;margin-top:12px}
.card-list{list-style:none;padding:0;margin:16px 0 0;display:grid;gap:10px}
.card-list li{position:relative;padding-left:20px;font-size:15px;color:var(--ink-2);line-height:1.75}
.card-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;border-radius:2px;
  background:var(--brand-soft);border:1px solid rgba(192,86,47,.45);
}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-deep);font-size:12.5px;font-weight:500;
}
.badge-line{background:#fff;border:1px solid var(--line);color:var(--ink-2)}

/* ============ 图文说明卡 ============ */
.media-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.media-card:hover{border-color:rgba(192,86,47,.3);transform:translateY(-2px);box-shadow:var(--sh-2)}
.media-figure{position:relative;aspect-ratio:16/10;background:var(--brand-soft);overflow:hidden}
.media-figure img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.media-card:hover .media-figure img{transform:scale(1.02)}
.media-body{padding:24px 26px 28px}
.media-body p{color:var(--ink-2);font-size:15px;margin-top:12px}

/* ============ 对照矩阵 / 参数表 ============ */
.table-wrap{
  overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--surface);box-shadow:var(--sh-1);
}
table.matrix{width:100%;border-collapse:collapse;min-width:640px}
table.matrix th,table.matrix td{
  border:1px solid var(--line);padding:16px 18px;text-align:left;font-size:15px;
  color:var(--ink-2);vertical-align:top;line-height:1.7;
}
table.matrix thead th{
  background:var(--brand-soft);color:var(--brand-deep);font-weight:600;font-size:15px;
  border-bottom:1px solid rgba(192,86,47,.2);
}
table.matrix tbody th{
  background:#FCFAF6;color:var(--ink);font-weight:600;width:26%;white-space:nowrap;
}
table.matrix tbody tr:hover td{background:#FDFBF8}
.cell-strong{color:var(--ink);font-weight:600}
.cell-accent{color:var(--brand);font-weight:600}

/* ============ 指标条 ============ */
.metrics{
  background:var(--ink);border-radius:var(--r-card);padding:40px 32px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:32px;
}
.metric{border-top:3px solid var(--brand);padding-top:18px}
.metric-num{
  font-family:var(--serif);font-size:clamp(30px,3.4vw,42px);font-weight:700;
  color:#fff;line-height:1.1;font-variant-numeric:tabular-nums;
}
.metric-num span{font-size:.52em;margin-left:4px;color:var(--accent)}
.metric-label{margin-top:10px;font-size:14px;color:rgba(255,255,255,.72);line-height:1.7}

/* ============ FAQ ============ */
.faq-wrap{max-width:768px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line);background:transparent}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 4px;cursor:pointer;list-style:none;
  font-size:15.5px;font-weight:700;color:var(--ink);transition:color .18s ease;
}
.faq-q::-webkit-details-marker{display:none}
.faq-q:hover{color:var(--brand)}
.faq-q:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.faq-ico{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);font-size:11px;
  transition:transform .2s ease,background .2s ease,color .2s ease;
}
.faq-item[open] .faq-ico{transform:rotate(180deg);background:var(--brand);color:#fff}
.faq-a{padding:0 4px 20px}
.faq-a p{font-size:14.5px;line-height:1.85;color:var(--ink-2)}

/* ============ 底部 CTA ============ */
.cta-block{position:relative;overflow:hidden;border-radius:var(--r-card);padding:64px 44px;color:#fff}
.cta-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.cta-mask{position:absolute;inset:0;background:linear-gradient(100deg,rgba(23,50,44,.86) 0%,rgba(23,50,44,.62) 70%,rgba(143,61,31,.58) 100%)}
.cta-inner{position:relative;z-index:2;max-width:760px}
.cta-title{font-size:clamp(22px,2.6vw,30px);line-height:1.34;color:#fff;font-family:var(--serif);font-weight:700;margin:0}
.cta-desc{margin-top:16px;font-size:16px;color:rgba(255,255,255,.86)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.cta-btn-ghost{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.4);color:#fff}
.cta-btn-ghost:hover{background:rgba(255,255,255,.2);border-color:#fff;color:#fff}
.cta-tags{display:flex;flex-wrap:wrap;gap:18px;margin-top:26px}
.cta-tag{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.86)}
.cta-tag i{color:var(--accent)}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#fff;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:10px;font-family:var(--serif);font-size:18px;font-weight:700}
.footer-intro{margin-top:16px;font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.72);max-width:340px}
.footer-contact{margin-top:20px;display:grid;gap:10px}
.footer-contact div{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:rgba(255,255,255,.72);line-height:1.7}
.footer-contact i{color:var(--accent);margin-top:4px;font-size:12px}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-link{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:6px 0;transition:color .18s ease}
.footer-link:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.6);
}
.to-top{display:inline-flex;align-items:center;gap:8px;color:rgba(255,255,255,.78);font-size:13.5px}
.to-top:hover{color:#fff}

/* ============ 底部固定转化条 ============ */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:55;background:#fff;
  border-top:1px solid var(--line);box-shadow:0 -10px 28px -16px rgba(23,50,44,.35);
  transform:translateY(110%);transition:transform .26s ease;
}
.sticky-cta.show{transform:translateY(0)}
.sticky-cta-inner{display:flex;align-items:center;gap:16px;min-height:60px;padding-top:8px;padding-bottom:8px}
.sticky-text{font-size:14.5px;color:var(--ink-2);flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sticky-close{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;
  color:var(--muted);cursor:pointer;flex-shrink:0;transition:background .18s ease,color .18s ease;
}
.sticky-close:hover{background:var(--brand-soft);color:var(--brand-deep)}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .cmd-search{display:none}
  .metrics{grid-template-columns:repeat(2,1fr);gap:28px}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .header-actions .text-link{display:none}
  .header-actions .btn{display:none}
  .nav-toggle{display:grid}
  .section{padding:64px 0}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-intro{max-width:none}
  .page-hero{min-height:260px;padding:48px 0 38px}
}
@media (max-width:767px){
  body{padding-bottom:64px;font-size:15.5px}
  .container{padding:0 20px}
  .header-inner{height:56px}
  .section{padding:52px 0}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .sec-head-row{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px}
  .metrics{grid-template-columns:repeat(2,1fr);gap:22px;padding:28px 22px}
  .cta-block{padding:44px 22px}
  .cta-actions .btn{width:100%}
  .cta-actions{flex-direction:column}
  .cta-tags{gap:12px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding:52px 0 24px}
  .footer-bottom{margin-top:36px}
  .hero-sub{font-size:15.5px}
  .sticky-text{font-size:13.5px}
  table.matrix th,table.matrix td{padding:13px 14px;font-size:14px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
}

/* roulang page: category2 */
:root{
  --brand:#C0562F;
  --brand-deep:#8F3D1F;
  --brand-soft:#F6E7DE;
  --ink:#17322C;
  --ink-2:#3D4C48;
  --accent:#E0A24A;
  --bg:#FBF8F3;
  --surface:#FFFFFF;
  --line:#E7DFD4;
  --muted:#6B6560;
  --ok:#2F7D5B;
  --warn:#B4453A;
  --sh-1:0 1px 2px rgba(23,50,44,.05), 0 8px 24px -12px rgba(23,50,44,.12);
  --sh-2:0 2px 6px rgba(23,50,44,.06), 0 18px 40px -18px rgba(23,50,44,.22);
  --r-xl:20px;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --font-head:"Noto Serif SC","Songti SC","PingFang SC",serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}

/* ---------- 基础 ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
html body{
  margin:0;
  padding:0 0 72px;
  background:var(--bg);
  color:var(--ink-2);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
html img{max-width:100%;display:block;}
html a{color:var(--brand);text-decoration:none;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-tight{padding:56px 0 0;}

.section-title{
  font-family:var(--font-head);
  font-size:32px;
  line-height:1.3;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink);
  margin:0;
}
.section-desc{margin:14px 0 0;font-size:16px;line-height:1.9;color:var(--muted);max-width:760px;}
.center{text-align:center;}
.center-desc{margin-left:auto;margin-right:auto;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(251,248,243,.9);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.scrolled{box-shadow:0 10px 26px -20px rgba(23,50,44,.5);}
.header-inner{display:flex;align-items:center;gap:20px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-name{
  font-family:var(--font-head);
  font-size:18px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:.01em;
  white-space:nowrap;
}
.logo-mark{
  width:34px;height:34px;border-radius:var(--r-sm);
  background:var(--brand);color:#fff;
  display:grid;place-items:center;
  font-size:15px;
  box-shadow:var(--sh-1);
}
.main-nav{display:flex;align-items:center;gap:2px;flex:1;}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:40px;padding:0 12px;
  font-size:14.5px;font-weight:500;
  color:var(--ink-2);
  border-radius:8px;
  white-space:nowrap;
  transition:color .18s ease,background .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover{color:var(--brand);background:rgba(192,86,47,.06);}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand);font-weight:700;}
.nav-link:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.command-search{
  display:flex;align-items:center;gap:8px;
  width:236px;height:40px;padding:0 12px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  transition:width .22s ease,border-color .18s ease,box-shadow .18s ease;
}
.command-search:focus-within{width:316px;border-color:var(--brand);box-shadow:0 0 0 3px rgba(192,86,47,.12);}
.command-search i{font-size:13px;color:var(--muted);}
.search-input{
  flex:1;min-width:0;border:0;outline:0;background:transparent;
  font-family:inherit;font-size:14px;color:var(--ink);
}
.search-input::placeholder{color:#A39C95;}
.kbd{
  font-size:11px;color:var(--muted);
  border:1px solid var(--line);border-radius:6px;
  padding:1px 5px;background:var(--bg);
  white-space:nowrap;
}
.ghost-link{
  font-size:14px;color:var(--ink-2);
  padding:4px 2px;border-bottom:1px solid transparent;
  transition:color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.ghost-link:hover{color:var(--brand);border-bottom-color:var(--brand);}
.ghost-link:focus-visible{outline:2px solid var(--brand);outline-offset:3px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;
  border:1px solid transparent;border-radius:var(--r-sm);
  font-family:inherit;font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;text-align:center;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--sh-2);color:#fff;}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{background:var(--brand-soft);border-color:rgba(192,86,47,.4);color:var(--brand-deep);}
.btn-ghost:active{background:#EFDCCF;}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}
.btn-lg{min-height:50px;padding:0 26px;font-size:16px;}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}

.text-cta{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--brand);
  transition:color .18s ease;
}
.text-cta i{font-size:12px;transition:transform .18s ease;}
.text-cta:hover{color:var(--brand-deep);text-decoration:underline;}
.text-cta:hover i{transform:translateX(3px);}
.text-cta:focus-visible{outline:2px solid var(--brand);outline-offset:3px;}

/* ---------- 移动端导航 ---------- */
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--r-sm);
  background:var(--surface);border:1px solid var(--line);
  color:var(--ink);font-size:16px;cursor:pointer;
  transition:background .18s ease,border-color .18s ease;
}
.nav-toggle:hover{background:var(--brand-soft);border-color:rgba(192,86,47,.4);}
.nav-toggle:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.nav-mask{
  position:fixed;inset:0;z-index:70;
  background:rgba(23,50,44,.4);
  opacity:0;pointer-events:none;
  transition:opacity .24s ease;
}
.nav-mask.open{opacity:1;pointer-events:auto;}
.mobile-drawer{
  position:fixed;top:0;right:0;z-index:80;
  width:min(86vw,340px);height:100%;
  background:var(--surface);
  border-left:1px solid var(--line);
  padding:24px 22px 32px;
  overflow-y:auto;
  transform:translateX(105%);
  transition:transform .26s ease;
  box-shadow:-20px 0 40px -24px rgba(23,50,44,.4);
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{
  width:40px;height:40px;border-radius:var(--r-sm);
  background:var(--bg);border:1px solid var(--line);
  color:var(--ink);cursor:pointer;font-size:15px;
}
.drawer-close:hover{background:var(--brand-soft);}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:20px;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 12px;border-radius:var(--r-sm);
  font-size:15px;font-weight:500;color:var(--ink-2);
  border:1px solid transparent;
}
.drawer-nav a:hover{background:var(--brand-soft);color:var(--brand-deep);}
.drawer-nav a.active{background:var(--brand-soft);color:var(--brand);font-weight:700;}
.drawer-search{
  display:flex;align-items:center;gap:8px;
  height:46px;padding:0 12px;margin-bottom:16px;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r-sm);
}
.drawer-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(192,86,47,.12);}
.drawer-cta{width:100%;}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;
  padding:88px 0 76px;
  background-image:linear-gradient(rgba(23,50,44,.58),rgba(23,50,44,.58)),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  color:#fff;
  overflow:hidden;
}
.page-head::after{
  content:"";position:absolute;inset:auto 0 0 0;height:6px;
  background:linear-gradient(90deg,var(--brand) 0%,rgba(224,162,74,.9) 42%,rgba(192,86,47,0) 100%);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.76);margin-bottom:22px;}
.breadcrumb a{color:rgba(255,255,255,.86);}
.breadcrumb a:hover{color:#fff;text-decoration:underline;}
.breadcrumb span.sep{color:rgba(255,255,255,.42);}
.breadcrumb .current{color:rgba(255,255,255,.6);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.24);
  font-size:13px;font-weight:500;color:#fff;
  margin-bottom:18px;
}
.page-title{
  font-family:var(--font-head);
  font-size:44px;
  line-height:1.28;
  font-weight:700;
  letter-spacing:-.01em;
  color:#fff;
  margin:0;
  max-width:900px;
}
.page-sub{margin:18px 0 0;font-size:17px;line-height:1.85;color:rgba(255,255,255,.86);max-width:680px;}
.head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.head-tags span{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:999px;
  font-size:13px;color:rgba(255,255,255,.9);
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.2);
}

/* ---------- 简介区 ---------- */
.intro-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:48px;align-items:start;}
.intro-text p{margin:0 0 20px;font-size:16.5px;line-height:1.95;color:var(--ink-2);}
.intro-text p:last-child{margin-bottom:0;}
.intro-text strong{color:var(--ink);font-weight:700;}
.summary-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-left:3px solid var(--brand);
  border-radius:var(--r-lg);
  padding:26px 26px 22px;
  box-shadow:var(--sh-1);
}
.summary-card .card-kicker{font-size:13px;font-weight:600;color:var(--brand);letter-spacing:.06em;}
.summary-card h3{font-family:var(--font-head);font-size:20px;line-height:1.4;color:var(--ink);margin:8px 0 14px;}
.summary-list{list-style:none;margin:0;padding:0;}
.summary-list li{display:flex;gap:10px;font-size:14.5px;line-height:1.8;color:var(--ink-2);padding:9px 0;border-bottom:1px dashed var(--line);}
.summary-list li:last-child{border-bottom:0;}
.summary-list i{color:var(--brand);font-size:13px;margin-top:5px;}

/* ---------- 流程时间线 ---------- */
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:44px;}
.flow-grid{display:grid;grid-template-columns:1.4fr .86fr;gap:48px;align-items:start;}
.timeline{position:relative;padding:6px 0 0;}
.timeline::before{
  content:"";position:absolute;left:23px;top:18px;bottom:26px;width:2px;
  background:linear-gradient(180deg,var(--brand) 0%,rgba(192,86,47,.35) 60%,rgba(192,86,47,.08) 100%);
  border-radius:2px;
}
.tl-item{position:relative;padding:0 0 34px 72px;}
.tl-item:last-child{padding-bottom:0;}
.tl-num{
  position:absolute;left:0;top:0;
  width:48px;height:48px;border-radius:14px;
  background:var(--surface);
  border:1px solid var(--line);
  color:var(--brand);
  font-family:var(--font-head);
  font-weight:700;font-size:16px;
  display:grid;place-items:center;
  box-shadow:var(--sh-1);
  z-index:1;
}
.tl-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:22px 24px;
  box-shadow:var(--sh-1);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.tl-card:hover{border-color:rgba(192,86,47,.32);transform:translateY(-2px);box-shadow:var(--sh-2);}
.tl-title{font-family:var(--font-head);font-size:20px;line-height:1.4;color:var(--ink);margin:0 0 8px;font-weight:700;}
.tl-text{margin:0 0 12px;font-size:15px;line-height:1.9;color:var(--ink-2);}
.tl-meta{display:flex;flex-wrap:wrap;gap:8px;}
.tl-meta span{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 11px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-deep);
  font-size:12.5px;font-weight:500;
}
.flow-aside{position:sticky;top:88px;display:flex;flex-direction:column;gap:22px;}
.figure{margin:0;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--brand-soft);box-shadow:var(--sh-1);}
.figure .figure-frame{position:relative;width:100%;aspect-ratio:16/10;background:var(--brand-soft);}
.figure img{width:100%;height:100%;object-fit:cover;transition:transform .28s ease;}
.figure:hover img{transform:scale(1.02);}
.figure figcaption{padding:12px 16px;font-size:13px;line-height:1.7;color:var(--muted);background:var(--surface);border-top:1px solid var(--line);}
.aside-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px 22px 18px;box-shadow:var(--sh-1);
}
.aside-card h3{font-family:var(--font-head);font-size:17px;color:var(--ink);margin:0 0 12px;}
.aside-card ul{list-style:none;margin:0;padding:0;}
.aside-card li{display:flex;gap:10px;font-size:14px;line-height:1.8;color:var(--ink-2);padding:7px 0;}
.aside-card li i{color:var(--brand);font-size:12px;margin-top:6px;}

/* ---------- 要点网格 ---------- */
.points-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px;}
.point-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:26px 24px;
  box-shadow:var(--sh-1);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.point-card:hover{border-color:rgba(192,86,47,.32);transform:translateY(-2px);box-shadow:var(--sh-2);}
.point-icon{
  width:44px;height:44px;border-radius:var(--r-md);
  background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-size:17px;
  margin-bottom:16px;
}
.point-card h3{font-family:var(--font-head);font-size:19px;line-height:1.4;color:var(--ink);margin:0 0 8px;}
.point-card p{margin:0;font-size:15px;line-height:1.85;color:var(--ink-2);}
.point-num{
  display:inline-block;font-family:var(--font-head);font-size:13px;font-weight:700;
  color:var(--brand);letter-spacing:.08em;margin-bottom:10px;
}

/* ---------- 数据条 ---------- */
.stats-band{
  background:var(--ink);
  border-radius:var(--r-xl);
  padding:40px 40px 36px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:28px;
  position:relative;overflow:hidden;
}
.stats-band::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--brand);}
.stat-num{
  font-family:var(--font-head);
  font-size:40px;font-weight:700;line-height:1.1;
  color:#fff;font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.stat-num em{font-style:normal;font-size:18px;color:var(--accent);margin-left:4px;font-weight:600;}
.stat-label{margin-top:8px;font-size:13.5px;line-height:1.7;color:rgba(255,255,255,.72);}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin:40px auto 0;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:16px 4px;
  font-size:16px;font-weight:600;line-height:1.6;color:var(--ink);
  cursor:pointer;list-style:none;
}
.faq-q::-webkit-details-marker{display:none;}
.faq-q:hover{color:var(--brand);}
.faq-icon{flex-shrink:0;color:var(--brand);font-size:14px;transition:transform .2s ease;}
.faq-item[open] .faq-icon{transform:rotate(180deg);}
.faq-a{padding:0 4px 22px;font-size:15px;line-height:1.88;color:var(--ink-2);}
.faq-a strong{color:var(--ink);}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  border-radius:var(--r-xl);
  overflow:hidden;
  padding:60px 52px;
  background-image:linear-gradient(rgba(23,50,44,.66),rgba(23,50,44,.66)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  color:#fff;
}
.cta-band h2{
  font-family:var(--font-head);
  font-size:30px;line-height:1.35;font-weight:700;
  color:#fff;margin:0 0 14px;max-width:760px;
}
.cta-band p{margin:0 0 28px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.86);max-width:660px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-actions .btn-ghost{border-color:rgba(255,255,255,.4);color:#fff;}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff;color:#fff;}
.cta-actions .btn-primary:hover{background:#A94A26;}
.cta-tags{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.cta-tags span{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:999px;
  font-size:13px;color:rgba(255,255,255,.86);
  border:1px solid rgba(255,255,255,.24);
}
.cta-tags i{color:var(--accent);font-size:12px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:72px 0 28px;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-head);font-size:18px;font-weight:700;color:#fff;
  margin-bottom:14px;
}
.footer-brand .logo-mark{background:var(--brand);}
.footer-intro{margin:0 0 18px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);max-width:340px;}
.footer-contact{display:flex;flex-direction:column;gap:8px;font-size:13.5px;color:rgba(255,255,255,.66);}
.footer-contact i{color:var(--accent);width:16px;margin-right:6px;font-size:12px;}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-link{
  display:block;font-size:14px;line-height:1.7;
  color:rgba(255,255,255,.72);
  padding:6px 0;
  border-bottom:1px solid transparent;
  transition:color .18s ease;
  width:fit-content;
}
.footer-link:hover{color:#fff;text-decoration:underline;}
.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:rgba(255,255,255,.6);
}
.to-top{color:rgba(255,255,255,.72);font-size:13px;display:inline-flex;align-items:center;gap:6px;}
.to-top:hover{color:#fff;text-decoration:underline;}

/* ---------- 底部固定转化条 ---------- */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(255,255,255,.97);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-top:1px solid var(--line);
  box-shadow:0 -10px 26px -22px rgba(23,50,44,.5);
  transform:translateY(115%);
  transition:transform .26s ease;
}
.sticky-bar.show{transform:translateY(0);}
.sticky-bar-inner{display:flex;align-items:center;gap:16px;height:60px;}
.sticky-text{font-size:14.5px;font-weight:600;color:var(--ink);display:flex;align-items:center;gap:10px;}
.sticky-text i{color:var(--brand);}
.sticky-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.sticky-close{
  width:38px;height:38px;border-radius:var(--r-sm);
  background:var(--bg);border:1px solid var(--line);
  color:var(--muted);cursor:pointer;font-size:14px;
  transition:background .18s ease,color .18s ease;
}
.sticky-close:hover{background:var(--brand-soft);color:var(--brand-deep);}
.sticky-close:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .container{padding:0 28px;}
  .main-nav{gap:0;}
  .nav-link{padding:0 10px;font-size:14px;}
  .command-search{width:200px;}
  .command-search:focus-within{width:250px;}
}
@media (max-width:1024px){
  .main-nav,.command-search,.ghost-link{display:none;}
  .nav-toggle{display:inline-flex;}
  .section{padding:76px 0;}
  .page-head{padding:72px 0 64px;}
  .page-title{font-size:36px;}
  .intro-grid{grid-template-columns:1fr;gap:32px;}
  .flow-grid{grid-template-columns:1fr;gap:36px;}
  .flow-aside{position:static;}
  .points-grid{grid-template-columns:repeat(2,1fr);}
  .stats-band{grid-template-columns:repeat(2,1fr);padding:34px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:48px 36px;}
}
@media (max-width:768px){
  html body{padding-bottom:64px;font-size:16px;}
  .container{padding:0 20px;}
  .header-inner{height:56px;}
  .brand-name{font-size:17px;}
  .section{padding:56px 0;}
  .section-title{font-size:24px;}
  .page-title{font-size:30px;line-height:1.32;}
  .page-sub{font-size:16px;}
  .breadcrumb{font-size:13px;margin-bottom:18px;}
  .timeline::before{left:19px;}
  .tl-item{padding-left:60px;padding-bottom:28px;}
  .tl-num{width:40px;height:40px;border-radius:12px;font-size:14px;}
  .tl-title{font-size:18px;}
  .points-grid{grid-template-columns:1fr;gap:16px;}
  .stats-band{grid-template-columns:1fr 1fr;gap:22px;padding:28px 24px;border-radius:var(--r-lg);}
  .stat-num{font-size:32px;}
  .cta-band{padding:36px 24px;border-radius:var(--r-lg);}
  .cta-band h2{font-size:23px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding:56px 0 24px;margin-top:64px;}
  .sticky-text{font-size:13.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
  .sticky-bar-inner{height:56px;gap:10px;}
  .sticky-actions .btn{padding:0 14px;font-size:14px;}
}
@media (max-width:520px){
  .stats-band{grid-template-columns:1fr;}
  .head-tags span{font-size:12px;padding:6px 11px;}
  .sticky-text span.long{display:none;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category4 */
:root{
  --brand:#C0562F;
  --brand-deep:#8F3D1F;
  --brand-soft:#F6E7DE;
  --ink:#17322C;
  --ink-2:#3D4C48;
  --accent:#E0A24A;
  --bg:#FBF8F3;
  --surface:#FFFFFF;
  --line:#E7DFD4;
  --muted:#6B6560;
  --ok:#2F7D5B;
  --warn:#B4453A;
  --sh-1:0 1px 2px rgba(23,50,44,.05), 0 8px 24px -12px rgba(23,50,44,.12);
  --sh-2:0 2px 4px rgba(23,50,44,.06), 0 18px 40px -16px rgba(23,50,44,.22);
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --maxw:1200px;
  --nav-h:64px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body.site-body{
  margin:0;
  background:var(--bg);
  color:var(--ink-2);
  font-family:"Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.9;
  padding-bottom:72px;
  overflow-x:hidden;
}
h1,h2,h3,h4,.serif{
  font-family:"Noto Serif SC","Songti SC","PingFang SC Semibold","HarmonyOS Sans SC","Microsoft YaHei",serif;
  color:var(--ink);
  letter-spacing:-0.01em;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;}
input,textarea,select{font:inherit;}
ul,ol{padding-left:1.1em;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding-left:20px;padding-right:20px;}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;color:var(--brand);
  text-transform:uppercase;font-weight:600;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:2px;}
.section-title{font-size:32px;line-height:1.3;font-weight:700;margin:0 0 14px;}
.section-sub{font-size:15px;color:var(--muted);max-width:640px;margin:0 0 40px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-ghost{background:var(--surface);color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{background:var(--brand-soft);border-color:#E4C7B7;}
.btn-ghost:active{background:#EFDACF;}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;border-radius:var(--r-sm);}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);
  font-size:14px;font-weight:600;transition:color .2s ease;
}
.btn-text i{transition:transform .2s ease;}
.btn-text:hover{color:var(--brand-deep);text-decoration:underline;text-underline-offset:4px;}
.btn-text:hover i{transform:translateX(3px);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:600;padding:4px 12px;border-radius:999px;
  letter-spacing:.02em;
}
.badge-ink{background:rgba(23,50,44,.08);color:var(--ink);}
.badge-ok{background:rgba(47,125,91,.12);color:var(--ok);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(251,248,243,.88);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease,background-color .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px -14px rgba(23,50,44,.4);background:rgba(251,248,243,.96);}
.header-inner{display:flex;align-items:center;gap:20px;height:var(--nav-h);}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  display:grid;place-items:center;
  background:var(--brand);color:#fff;font-size:15px;
  box-shadow:0 6px 14px -8px rgba(192,86,47,.9);
}
.brand-name{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.01em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-link{
  position:relative;padding:8px 12px;font-size:14.5px;font-weight:500;
  color:var(--ink-2);border-radius:8px;transition:color .2s ease,background-color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover{color:var(--brand);background:rgba(192,86,47,.06);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.header-tools{display:flex;align-items:center;gap:12px;margin-left:auto;}
.command-search{
  position:relative;display:flex;align-items:center;gap:8px;
  width:220px;height:40px;padding:0 12px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);
  color:var(--muted);transition:width .22s ease,border-color .2s ease,box-shadow .2s ease;
}
.command-search i{font-size:13px;color:var(--muted);}
.command-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--ink);
}
.command-search input::placeholder{color:#9C948C;}
.command-search kbd{
  font-size:11px;font-family:inherit;color:var(--muted);
  border:1px solid var(--line);border-radius:6px;padding:1px 6px;background:var(--bg);
}
.command-search:focus-within{width:300px;border-color:var(--brand);box-shadow:0 0 0 3px rgba(192,86,47,.14);}
.search-panel{
  position:absolute;top:calc(100% + 8px);left:0;right:0;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-2);padding:8px;display:none;z-index:70;
}
.command-search:focus-within .search-panel{display:block;}
.search-panel a{
  display:block;padding:8px 10px;border-radius:8px;font-size:13.5px;color:var(--ink-2);
  transition:background-color .18s ease,color .18s ease;
}
.search-panel a:hover{background:var(--brand-soft);color:var(--brand-deep);}
.text-entry{font-size:14px;font-weight:500;color:var(--ink-2);transition:color .2s ease;}
.text-entry:hover{color:var(--brand);}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);background:var(--surface);
  border-radius:var(--r-sm);cursor:pointer;color:var(--ink);font-size:16px;
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(23,50,44,.4);opacity:0;visibility:hidden;
  transition:opacity .24s ease,visibility .24s ease;z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);
  background:var(--surface);z-index:90;padding:22px 20px;
  transform:translateX(102%);transition:transform .26s ease;
  overflow-y:auto;box-shadow:-12px 0 40px -20px rgba(23,50,44,.5);
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{width:38px;height:38px;border:1px solid var(--line);background:var(--bg);border-radius:10px;cursor:pointer;}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:20px;}
.drawer-nav a{
  padding:12px 10px;border-radius:10px;font-size:15px;font-weight:500;color:var(--ink-2);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--brand);background:var(--brand-soft);font-weight:600;}
.drawer-search{display:flex;align-items:center;gap:8px;height:44px;padding:0 12px;border:1px solid var(--line);border-radius:var(--r-md);margin-bottom:16px;color:var(--muted);}
.drawer-search input{flex:1;border:0;outline:none;background:transparent;font-size:14px;color:var(--ink);}

/* ---------- 页头 ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--ink);}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.42;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(23,50,44,.92) 0%,rgba(23,50,44,.72) 52%,rgba(23,50,44,.5) 100%);
}
.page-hero-inner{position:relative;z-index:2;padding:88px 0 76px;max-width:800px;}
.crumb{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:22px;flex-wrap:wrap;}
.crumb a{color:rgba(255,255,255,.86);transition:color .2s ease;}
.crumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.crumb .sep{opacity:.55;}
.crumb .current{color:rgba(255,255,255,.62);}
.page-hero h1{
  color:#fff;font-size:44px;line-height:1.22;font-weight:700;margin:0 0 18px;
}
.page-hero p{color:rgba(255,255,255,.84);font-size:17px;line-height:1.85;margin:0 0 30px;max-width:620px;}
.hero-tags{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:32px;}
.hero-tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 14px;border-radius:999px;font-size:13px;
  background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.22);
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;}
.page-hero .btn-ghost{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.36);}
.page-hero .btn-ghost:hover{background:rgba(255,255,255,.2);}
.hero-figure{
  position:relative;z-index:2;margin-top:44px;
  border-radius:var(--r-lg);overflow:hidden;border:1px solid rgba(255,255,255,.2);
  aspect-ratio:16/7;background:var(--brand-soft);
}

/* ---------- 简介 ---------- */
.intro-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:48px;align-items:start;}
.intro-body p{font-size:16.5px;line-height:1.95;margin:0 0 20px;max-width:64ch;}
.intro-body p:last-child{margin-bottom:0;}
.intro-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px;box-shadow:var(--sh-1);
}
.intro-card h3{font-size:19px;margin:0 0 16px;line-height:1.4;}
.intro-list{list-style:none;padding:0;margin:0;}
.intro-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.5px;line-height:1.75;color:var(--ink-2);
  padding:11px 0;border-bottom:1px dashed var(--line);
}
.intro-list li:last-child{border-bottom:0;padding-bottom:0;}
.intro-list i{color:var(--brand);margin-top:5px;font-size:13px;}

/* ---------- 瀑布卡 ---------- */
.waterfall{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.wf-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.wf-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(192,86,47,.3);}
.wf-card figure{margin:0;overflow:hidden;background:var(--brand-soft);position:relative;}
.wf-card figure img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.wf-card:hover figure img{transform:scale(1.02);}
.wf-a{grid-column:span 7;}
.wf-b{grid-column:span 5;}
.wf-c{grid-column:span 5;}
.wf-d{grid-column:span 7;}
.wf-a figure{aspect-ratio:16/9;}
.wf-b figure{aspect-ratio:4/3;}
.wf-c figure{aspect-ratio:4/3;}
.wf-d figure{aspect-ratio:16/9;}
.wf-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.wf-body h3{font-size:21px;margin:0;line-height:1.4;}
.wf-body p{font-size:15px;line-height:1.85;color:var(--ink-2);margin:0;}
.wf-points{list-style:none;padding:0;margin:2px 0 0;}
.wf-points li{position:relative;padding-left:18px;font-size:14.5px;line-height:1.8;color:var(--muted);}
.wf-points li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;
  background:var(--brand);
}
.wf-foot{margin-top:auto;padding-top:8px;}

/* ---------- 要点网格 ---------- */
.grid-points{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.point-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 24px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.point-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(192,86,47,.3);}
.point-num{
  font-size:15px;font-weight:700;color:var(--brand);letter-spacing:.08em;
  font-variant-numeric:tabular-nums;margin-bottom:14px;display:block;
}
.point-card h3{font-size:19px;margin:0 0 10px;line-height:1.4;}
.point-card p{font-size:14.5px;line-height:1.85;color:var(--ink-2);margin:0;}
.point-icon{
  width:40px;height:40px;border-radius:12px;background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-size:16px;margin-bottom:16px;
}

/* ---------- 数据条 ---------- */
.metrics{
  background:var(--ink);border-radius:20px;padding:48px 40px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:32px;position:relative;overflow:hidden;
}
.metrics::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
}
.metric-value{
  font-size:40px;font-weight:700;color:#fff;line-height:1.15;
  font-variant-numeric:tabular-nums;font-family:"Noto Serif SC",serif;
}
.metric-value span{font-size:18px;margin-left:4px;font-weight:600;color:var(--accent);}
.metric-label{font-size:14px;color:rgba(255,255,255,.68);margin-top:10px;line-height:1.7;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:transparent;border:0;cursor:pointer;text-align:left;
  padding:20px 4px;min-height:56px;
  font-size:16px;font-weight:700;color:var(--ink);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand);}
.faq-q .faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);
  font-size:12px;transition:transform .2s ease,background-color .2s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--brand);color:#fff;}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .22s ease;
}
.faq-a-inner{padding:0 4px 22px;font-size:15px;line-height:1.85;color:var(--ink-2);max-width:70ch;}

/* ---------- CTA ---------- */
.final-cta{position:relative;overflow:hidden;background:var(--ink);border-radius:22px;}
.final-cta-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;opacity:.4;
}
.final-cta::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(23,50,44,.94),rgba(23,50,44,.62));
}
.final-cta-inner{position:relative;z-index:2;padding:64px 48px;max-width:760px;}
.final-cta h2{color:#fff;font-size:30px;line-height:1.35;margin:0 0 16px;}
.final-cta p{color:rgba(255,255,255,.82);font-size:16px;line-height:1.85;margin:0 0 28px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:26px;}
.final-cta .btn-ghost{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.36);}
.final-cta .btn-ghost:hover{background:rgba(255,255,255,.2);}
.cta-marks{display:flex;gap:20px;flex-wrap:wrap;}
.cta-marks span{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13.5px;color:rgba(255,255,255,.8);
}
.cta-marks i{color:var(--accent);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:68px 0 28px;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:16px;}
.footer-brand .logo-mark{background:var(--brand);}
.footer-intro{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);margin:0 0 20px;max-width:34ch;}
.footer-contact div{display:flex;gap:9px;align-items:flex-start;font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.66);margin-bottom:8px;}
.footer-contact i{color:var(--accent);margin-top:6px;font-size:12px;}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-link{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:6px 0;transition:color .2s ease;}
.footer-link:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.6);
}
.to-top{display:inline-flex;align-items:center;gap:8px;color:rgba(255,255,255,.76);transition:color .2s ease;}
.to-top:hover{color:#fff;}

/* ---------- 底部固定转化条 ---------- */
.fixed-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:var(--surface);border-top:1px solid var(--line);
  box-shadow:0 -8px 24px -18px rgba(23,50,44,.5);
  transform:translateY(102%);transition:transform .26s ease;
}
.fixed-bar.is-visible{transform:translateY(0);}
.fixed-bar-inner{
  max-width:var(--maxw);margin:0 auto;padding:10px 20px;
  display:flex;align-items:center;gap:16px;min-height:60px;
}
.fixed-bar-text{font-size:14.5px;font-weight:600;color:var(--ink);}
.fixed-bar-text span{color:var(--brand);}
.fixed-bar-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.fixed-close{
  width:36px;height:36px;border:1px solid var(--line);border-radius:10px;background:var(--bg);
  cursor:pointer;color:var(--muted);transition:color .2s ease,background-color .2s ease;
}
.fixed-close:hover{color:var(--ink);background:var(--brand-soft);}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .command-search{width:190px;}
  .command-search:focus-within{width:240px;}
}
@media (max-width:1024px){
  .main-nav{display:none;}
  .command-search{display:none;}
  .nav-toggle{display:grid;place-items:center;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .page-hero-inner{padding:64px 0 56px;}
  .page-hero h1{font-size:34px;}
  .intro-grid{grid-template-columns:1fr;gap:32px;}
  .grid-points{grid-template-columns:repeat(2,1fr);}
  .metrics{grid-template-columns:repeat(2,1fr);padding:40px 28px;gap:26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .wf-a,.wf-b,.wf-c,.wf-d{grid-column:span 12;}
}
@media (max-width:768px){
  .header-inner{height:56px;}
  .text-entry{display:none;}
  .brand-name{font-size:16px;}
  .section{padding:56px 0;}
  .section-title{font-size:24px;}
  .page-hero h1{font-size:30px;}
  .page-hero p{font-size:15.5px;}
  .hero-figure{aspect-ratio:16/10;margin-top:32px;}
  .grid-points{grid-template-columns:1fr;}
  .metrics{grid-template-columns:repeat(2,1fr);padding:32px 22px;}
  .metric-value{font-size:32px;}
  .final-cta-inner{padding:40px 22px;}
  .final-cta h2{font-size:23px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .fixed-bar-text{font-size:13.5px;}
  .fixed-bar-actions .btn{padding:0 14px;font-size:13.5px;}
}
@media (max-width:520px){
  .container{padding-left:16px;padding-right:16px;}
  .page-hero h1{font-size:27px;}
  .wf-body{padding:20px;}
  .wf-body h3{font-size:19px;}
  .hero-actions .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .metrics{grid-template-columns:1fr;}
  .fixed-bar-text{display:none;}
  .fixed-bar-actions{margin-left:auto;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
}