/* roulang page: index */
:root{
  --brand:#00C2A8;
  --brand-hover:#00A88F;
  --brand-active:#008D78;
  --brand-soft:#E6F7F4;
  --signal:#FF7A3D;
  --lime:#C8F24E;
  --ink:#0C1618;
  --ink-2:#13252A;
  --ink-text:#E8F1EF;
  --bg:#F4F6F5;
  --surface:#FFFFFF;
  --text:#1A2422;
  --text-2:#5C6B68;
  --line:#E1E7E4;
  --success:#2FA36B;
  --warn:#D99A16;
  --error:#D9483B;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-hero:20px;
  --shadow-1:0 1px 2px rgba(12,22,24,.06);
  --shadow-card:0 8px 24px -12px rgba(12,22,24,.18);
  --shadow-hover:0 14px 32px -14px rgba(0,194,168,.35);
  --mono:'Roboto Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-hover)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:0}
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 20px}
@media (min-width:1024px){.container{padding:0 32px}}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px -14px rgba(12,22,24,.4)}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  min-height:72px;
}
.nav{display:flex;align-items:center;gap:6px}
.nav-left{justify-content:flex-start}
.nav-right{justify-content:flex-end}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:44px;padding:0 12px;
  font-size:15px;font-weight:500;color:var(--text);
  border-radius:8px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:center;
  transition:transform .22s ease-out;
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  color:var(--text);font-weight:900;font-size:19px;letter-spacing:.01em;
}
.brand:hover{color:var(--text)}
.brand-mark{
  display:grid;place-items:center;
  width:38px;height:38px;
  background:var(--brand);color:#fff;
  font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:.02em;
  border-radius:10px;
  clip-path:polygon(10px 0,100% 0,100% 100%,0 100%,0 10px);
}
.brand-text{white-space:nowrap}
.nav-toggle{
  display:none;
  width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:10px;cursor:pointer;padding:0;
  align-items:center;justify-content:center;
}
.nav-toggle span{
  display:block;width:18px;height:2px;background:var(--text);position:relative;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle:hover{border-color:var(--brand)}
.mobile-panel{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  padding:8px 0 16px;
}
.mobile-panel.is-open{display:block}
.mobile-panel .nav-link{
  display:flex;width:100%;height:52px;padding:0 20px;
  border-radius:0;font-size:16px;
}
.mobile-panel .nav-link::after{display:none}
.mobile-panel .nav-link.is-active{background:var(--brand-soft)}
.mobile-cta{padding:12px 20px 0}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;
  font-size:15px;font-weight:700;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:background .2s ease,color .2s ease,transform .18s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px -12px rgba(0,194,168,.7)}
.btn-primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px)}
.btn-primary:active{background:var(--brand-active)}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand-hover)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}
.btn-ghost:hover{background:var(--brand);border-color:var(--brand);color:#fff}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--brand);
  border-bottom:1px solid transparent;
}
.text-link:hover{color:var(--brand-hover);border-bottom-color:var(--brand-hover)}

/* ============ badges ============ */
.badge{
  display:inline-flex;align-items:center;
  padding:3px 11px;border-radius:999px;
  font-size:12px;font-weight:700;line-height:1.6;
  background:var(--brand-soft);color:var(--brand-active);
}
.badge-top{background:var(--signal);color:#fff}
.badge-lime{background:var(--lime);color:var(--ink)}
.badge-ghost{background:rgba(255,255,255,.12);color:var(--ink-text)}

/* ============ sections ============ */
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:88px 0}}
.section-dark{background:var(--ink);color:var(--ink-text)}
.section-dark .lead{color:rgba(232,241,239,.75)}
.section-head{max-width:760px;margin-bottom:32px}
.section-head h2{
  position:relative;
  font-size:26px;padding-left:14px;
}
@media (min-width:1024px){.section-head h2{font-size:32px}}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;
  background:var(--brand);border-radius:2px;
}
.section-head .lead{margin-top:12px;color:var(--text-2);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12px;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--brand);margin-bottom:12px;
}

/* ============ hero ============ */
.hero{
  position:relative;color:var(--ink-text);
  background-image:linear-gradient(105deg,rgba(9,20,22,.94) 0%,rgba(9,20,22,.82) 46%,rgba(9,20,22,.55) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  padding:64px 0 56px;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;left:-160px;top:-120px;width:520px;height:520px;
  background:radial-gradient(circle,rgba(0,194,168,.34),rgba(0,194,168,0) 68%);
  pointer-events:none;
}
@media (min-width:1024px){.hero{padding:96px 0 84px}}
.hero-inner{position:relative;z-index:2;max-width:820px}
.hero h1{
  font-size:34px;line-height:1.24;font-weight:900;margin:16px 0 18px;
}
@media (min-width:1024px){.hero h1{font-size:44px}}
.hero-sub{
  font-size:17px;color:rgba(232,241,239,.82);max-width:640px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-stats{
  display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:44px;
  padding-top:28px;border-top:1px solid rgba(232,241,239,.16);
}
@media (min-width:768px){.hero-stats{grid-template-columns:repeat(4,1fr)}}
.hero-stat .num{
  font-family:var(--mono);font-size:26px;font-weight:700;letter-spacing:.02em;color:#fff;
  padding-bottom:6px;position:relative;display:inline-block;
}
.hero-stat .num::after{
  content:"";position:absolute;left:0;bottom:0;width:26px;height:2px;background:var(--brand);
}
.hero-stat .lbl{display:block;margin-top:8px;font-size:14px;color:rgba(232,241,239,.68)}

/* ============ value strip ============ */
.value-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:640px){.value-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.value-grid{grid-template-columns:repeat(4,1fr)}}
.value-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
  transition:box-shadow .22s ease-out,transform .22s ease-out;
}
.value-item:hover{box-shadow:var(--shadow-card);transform:translateY(-2px)}
.value-icon{
  display:grid;place-items:center;width:40px;height:40px;margin-bottom:14px;
  border-radius:10px;background:var(--brand-soft);color:var(--brand-active);
  font-family:var(--mono);font-weight:700;font-size:15px;
}
.value-item h3{font-size:18px;margin-bottom:8px}
.value-item p{font-size:15px;color:var(--text-2)}

/* ============ feature asymmetric grid ============ */
.grid-12{display:grid;gap:24px;grid-template-columns:1fr}
@media (min-width:768px){.grid-12{grid-template-columns:repeat(12,1fr)}}
.f-card{
  position:relative;
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;
  transition:box-shadow .22s ease-out,transform .22s ease-out,border-color .22s ease-out;
}
.f-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:#CFEDE7}
.f-card .content{padding:24px}
.f-card h3{font-size:19px;margin-bottom:10px;transition:color .2s ease}
.f-card:hover h3{color:var(--brand-active)}
.f-card p{font-size:15px;color:var(--text-2);margin-bottom:14px}
.f-cover{aspect-ratio:16/9;width:100%;object-fit:cover;transition:transform .3s ease-out}
.f-card:hover .f-cover{transform:scale(1.03)}
.f-card.is-large .f-cover{aspect-ratio:16/7}
.span-6{grid-column:span 12}
.span-3{grid-column:span 12}
.span-4{grid-column:span 12}
@media (min-width:768px){
  .span-6{grid-column:span 12}
  .span-3{grid-column:span 6}
  .span-4{grid-column:span 6}
}
@media (min-width:1024px){
  .span-6{grid-column:span 6}
  .span-3{grid-column:span 3}
  .span-4{grid-column:span 4}
}
.corner-cut{clip-path:polygon(14px 0,100% 0,100% 100%,0 100%,0 14px)}

/* ============ scenario ============ */
.scene{
  display:grid;gap:32px;align-items:center;
  padding:32px 0;border-top:1px solid var(--line);
}
.scene:first-of-type{border-top:0;padding-top:0}
@media (min-width:1024px){.scene{grid-template-columns:1fr 1fr;gap:56px;padding:44px 0}}
.scene-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
}
@media (min-width:1024px){
  .scene.reverse .scene-media{order:2}
}
.scene-body .scene-no{
  font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--signal);
}
.scene-body h3{font-size:22px;margin:10px 0 12px}
@media (min-width:1024px){.scene-body h3{font-size:24px}}
.scene-body > p{color:var(--text-2);font-size:16px}
.scene-list{margin:18px 0 20px;display:grid;gap:10px}
.scene-list li{position:relative;padding-left:20px;font-size:15px;color:var(--text)}
.scene-list li::before{
  content:"";position:absolute;left:0;top:.6em;width:8px;height:8px;
  background:var(--brand);border-radius:2px;
}

/* ============ cases (dark) ============ */
.section-dark .section-head h2{color:#fff}
.case-grid{display:grid;gap:24px;grid-template-columns:1fr}
@media (min-width:1024px){.case-grid{grid-template-columns:repeat(2,1fr)}}
.case-card{
  background:var(--ink-2);border:1px solid rgba(232,241,239,.12);
  border-radius:var(--radius-card);padding:28px;
  transition:border-color .22s ease,transform .22s ease-out;
}
.case-card:hover{border-color:rgba(0,194,168,.55);transform:translateY(-3px)}
.case-logo{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12px;font-weight:700;letter-spacing:.1em;
  color:var(--ink-text);background:rgba(255,255,255,.08);
  border-radius:999px;padding:5px 14px;margin-bottom:18px;
}
.case-card h3{font-size:20px;color:#fff;margin-bottom:10px}
.case-card p{font-size:15px;color:rgba(232,241,239,.72);margin-bottom:20px}
.case-metrics{display:flex;flex-wrap:wrap;gap:28px;border-top:1px solid rgba(232,241,239,.12);padding-top:18px}
.case-metric .num{font-family:var(--mono);font-size:24px;font-weight:700;color:var(--lime);letter-spacing:.02em}
.case-metric .lbl{display:block;font-size:13px;color:rgba(232,241,239,.6);margin-top:4px}

/* ============ news ============ */
.news-list{display:grid;gap:24px;grid-template-columns:1fr}
@media (min-width:640px){.news-list{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.news-list{grid-template-columns:repeat(3,1fr)}}
.news-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:box-shadow .22s ease-out,transform .22s ease-out;
}
.news-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.news-thumb{display:block;overflow:hidden;background:var(--brand-soft)}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease-out}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1}
.news-meta{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.news-date{font-family:var(--mono);font-size:12px;color:var(--text-2);margin-left:auto}
.news-title{font-size:17px;line-height:1.5;margin-bottom:10px}
.news-title a{color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-title a:hover{color:var(--brand-active)}
.news-summary{
  font-size:14px;color:var(--text-2);margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body .text-link{margin-top:auto}
.news-empty{
  text-align:center;padding:56px 24px;
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius-card);
}
.news-empty-icon{
  width:48px;height:48px;margin:0 auto 14px;border-radius:12px;
  display:grid;place-items:center;background:var(--brand-soft);color:var(--brand-active);
  font-size:22px;font-weight:700;
}
.news-empty p{color:var(--text-2);margin-bottom:18px}

/* ============ pricing ============ */
.price-grid{display:grid;gap:24px;grid-template-columns:1fr}
@media (min-width:1024px){.price-grid{grid-template-columns:repeat(3,1fr);align-items:start}}
.price-card{
  position:relative;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-1);
  transition:box-shadow .22s ease-out,transform .22s ease-out;
}
.price-card:hover{box-shadow:var(--shadow-card)}
.price-card.is-featured{
  border:2px solid var(--brand);
  box-shadow:0 18px 40px -22px rgba(0,194,168,.6);
}
@media (min-width:1024px){
  .price-card.is-featured{transform:scale(1.03);order:0}
  .price-grid .price-card:nth-child(1){order:1}
  .price-grid .price-card:nth-child(3){order:2}
}
.price-flag{
  position:absolute;top:-13px;left:28px;
  background:var(--signal);color:#fff;font-size:12px;font-weight:700;
  border-radius:999px;padding:4px 12px;
}
.price-card h3{font-size:20px;margin-bottom:6px}
.price-card .price-desc{font-size:14px;color:var(--text-2);min-height:44px}
.price-amount{
  display:flex;align-items:baseline;gap:6px;margin:18px 0 20px;
  padding-bottom:18px;border-bottom:1px solid var(--line);
}
.price-amount .num{font-family:var(--mono);font-size:32px;font-weight:700;color:var(--ink)}
.price-amount .unit{font-size:14px;color:var(--text-2)}
.price-rows{display:grid;gap:0;margin-bottom:22px}
.price-rows li{
  display:flex;justify-content:space-between;gap:16px;
  font-size:14px;padding:10px 0;border-bottom:1px solid var(--line);
}
.price-rows li span:last-child{color:var(--text-2);text-align:right}

/* ============ faq ============ */
.faq-list{max-width:860px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;gap:16px;
  padding:20px 0;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary h3{font-size:17px;flex:1;transition:color .2s ease}
.faq-item summary:hover h3{color:var(--brand-active)}
.faq-icon{
  position:relative;flex:none;width:22px;height:22px;border-radius:50%;
  border:1px solid var(--brand);color:var(--brand);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:10px;height:1.6px}
.faq-icon::after{width:1.6px;height:10px;transition:transform .26s ease,opacity .26s ease}
.faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .26s ease-out}
.faq-item[open] .faq-answer{max-height:320px}
.faq-answer p{padding:0 38px 22px 0;color:var(--text-2);font-size:15px}

/* ============ cta ============ */
.cta-band{
  background:var(--ink-2);border-radius:var(--radius-hero);
  padding:36px 28px;
  display:flex;flex-direction:column;gap:22px;
  align-items:flex-start;
}
@media (min-width:1024px){
  .cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:44px 48px}
}
.cta-band h2{font-size:24px;color:#fff;margin-bottom:8px}
.cta-band p{color:rgba(232,241,239,.72);font-size:15px;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ============ footer ============ */
.site-footer{background:var(--ink);color:var(--ink-text);padding:56px 0 24px;margin-top:0}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;font-weight:900;font-size:18px;color:#fff}
.footer-brand .brand-mark{width:34px;height:34px;font-size:12px}
.footer-desc{font-size:14px;color:rgba(232,241,239,.66);max-width:340px}
.footer-title{
  font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;
  padding-bottom:10px;border-bottom:1px solid rgba(232,241,239,.14);
}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14px;color:rgba(232,241,239,.72)}
.footer-links a:hover{color:var(--brand)}
.footer-contact{display:grid;gap:10px;font-size:14px;color:rgba(232,241,239,.72)}
.footer-contact strong{color:#fff;font-weight:500}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(232,241,239,.14);
  display:flex;flex-direction:column;gap:10px;font-size:13px;color:rgba(232,241,239,.55);
}
@media (min-width:768px){.footer-bottom{flex-direction:row;justify-content:space-between;align-items:center}}

/* ============ responsive nav ============ */
@media (max-width:1023px){
  .nav-left,.nav-right{display:none}
  .header-inner{grid-template-columns:44px 1fr 44px}
  .brand{justify-self:center}
  .nav-toggle{display:inline-flex}
  .brand-text{font-size:17px}
}
@media (max-width:520px){
  body{font-size:16px}
  .hero h1{font-size:28px}
  .section-head h2{font-size:23px}
  .hero-actions .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .brand-text{font-size:16px}
}

/* roulang page: category1 */
:root{
  --brand:#00C2A8;
  --brand-hover:#00A88F;
  --brand-active:#008D78;
  --brand-soft:#E6F7F4;
  --signal:#FF7A3D;
  --lime:#C8F24E;
  --ink:#0C1618;
  --ink-2:#13252A;
  --ink-text:#E8F1EF;
  --bg:#F4F6F5;
  --surface:#FFFFFF;
  --text:#1A2422;
  --muted:#5C6B68;
  --line:#E1E7E4;
  --success:#2FA36B;
  --warn:#D99A16;
  --error:#D9483B;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-input:10px;
  --radius-hero:20px;
  --shadow-sm:0 1px 2px rgba(12,22,24,.06);
  --shadow-card:0 8px 24px -12px rgba(12,22,24,.18);
  --shadow-hover:0 14px 32px -14px rgba(0,194,168,.35);
  --container:1200px;
  --gap:24px;
  --section:88px;
  --mono:"Roboto Mono","DIN Alternate","SFMono-Regular",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  padding-top:72px;
}
img{max-width:100%;display:block;border-radius:12px;background:var(--brand-soft)}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,opacity .18s ease}
a:hover{color:var(--brand-hover)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:800;letter-spacing:0;line-height:1.3}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease,background .22s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 26px -18px rgba(12,22,24,.35);background:#fff}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  min-height:72px;
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-weight:900;font-size:19px;color:var(--ink);
  white-space:nowrap;
}
.brand:hover{color:var(--ink)}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;
  background:var(--ink);
  color:var(--lime);
  font-family:var(--mono);
  font-size:13px;font-weight:700;letter-spacing:.02em;
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
}
.nav{display:flex;align-items:center;gap:6px}
.nav-left{justify-self:start}
.nav-right{justify-self:end}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:40px;padding:0 12px;
  font-size:15px;font-weight:600;color:var(--text);
  border-radius:8px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.nav-link.is-active{color:var(--brand)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-toggle{
  display:none;
  justify-self:end;
  width:44px;height:44px;
  border:1px solid var(--line);background:#fff;border-radius:10px;
  cursor:pointer;position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;transform:translateX(-50%);
  width:18px;height:2px;background:var(--ink);border-radius:2px;content:"";
  transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle span{top:21px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateX(-50%) rotate(45deg);top:0}
.nav-toggle[aria-expanded="true"] span::after{transform:translateX(-50%) rotate(-45deg);top:0}
.mobile-panel{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  padding:8px 20px 20px;
}
.mobile-panel .nav-link{height:52px;width:100%;font-size:16px}
.mobile-panel .nav-link::after{display:none}
.mobile-cta{margin-top:12px}
@media (max-width:1023px){
  .nav{display:none}
  .nav-toggle{display:block}
  .header-inner{grid-template-columns:44px 1fr 44px}
  .brand{justify-self:center;font-size:17px}
  .brand-mark{width:34px;height:34px;font-size:12px}
  .mobile-panel.is-open{display:block}
  body{padding-top:64px}
  .header-inner{min-height:64px}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:16px;font-weight:700;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,background .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;border-color:var(--brand);box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-hover)}
.btn-primary:active{background:var(--brand-active);transform:translateY(1px)}
.btn-outline{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand-hover)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.32)}
.btn-ghost:hover{background:var(--brand);border-color:var(--brand);color:#fff}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}

/* ---------- shared ---------- */
main{display:block}
section{padding:var(--section) 0}
@media (max-width:768px){section{padding:56px 0}}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--brand-active);text-transform:uppercase;
  font-family:var(--mono);
  margin-bottom:12px;
}
.sec-label::before{content:"";width:22px;height:2px;background:var(--brand);display:inline-block}
h2.sec-title{font-size:26px;position:relative;padding-left:14px}
h2.sec-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;
  background:var(--brand);border-radius:2px;
}
.sec-desc{margin-top:14px;color:var(--muted);font-size:16px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-active);
  font-size:12px;font-weight:700;
}
.badge-signal{background:rgba(255,122,61,.14);color:#C64F17}
.badge-lime{background:rgba(200,242,78,.3);color:#4C6410}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-weight:700;font-size:15px;
  border-bottom:2px solid transparent;
  transition:border-color .18s ease,color .18s ease;
}
.text-link:hover{border-color:var(--signal)}
.text-link:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:26px;
  position:relative;
  overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(0,194,168,.45)}
.card h3{font-size:19px;margin-bottom:10px;transition:color .18s ease}
.card:hover h3{color:var(--brand)}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;
  background:
    radial-gradient(760px 320px at 12% -10%,rgba(0,194,168,.16),transparent 62%),
    linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
  padding:56px 0 64px;
  overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(12,22,24,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(12,22,24,.045) 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.55;pointer-events:none;
}
.cat-hero .container{position:relative;z-index:1}
.crumbs{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);margin-bottom:20px;
}
.crumbs a{color:var(--muted);font-weight:600}
.crumbs a:hover{color:var(--brand)}
.crumbs span.sep{color:#B8C3C0}
.crumbs .current{color:var(--brand-active);font-weight:700}
.hero-grid{
  display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:48px;align-items:center;
}
.cat-hero h1{font-size:34px;line-height:1.3}
@media (min-width:1024px){.cat-hero h1{font-size:44px}}
.hero-lead{margin-top:16px;font-size:17px;color:var(--muted);max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-meta{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:18px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line);
}
.hero-meta .num{
  font-family:var(--mono);font-size:26px;font-weight:700;letter-spacing:.02em;color:var(--ink);
  padding-bottom:6px;position:relative;
}
.hero-meta .num::after{content:"";position:absolute;left:0;bottom:0;width:26px;height:2px;background:var(--brand)}
.hero-meta .lbl{display:block;margin-top:8px;font-size:13px;color:var(--muted)}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-hero);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.hero-chip{
  position:absolute;left:-14px;bottom:22px;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:12px 16px;box-shadow:var(--shadow-card);
  display:flex;flex-direction:column;gap:2px;
}
.hero-chip strong{font-family:var(--mono);font-size:18px;color:var(--brand-active)}
.hero-chip span{font-size:12px;color:var(--muted)}
@media (max-width:1023px){
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-visual img{aspect-ratio:16/10}
  .hero-chip{left:14px}
}
@media (max-width:520px){
  .hero-meta{grid-template-columns:1fr 1fr;gap:14px}
  .hero-actions .btn{width:100%}
}

/* ---------- capability matrix ---------- */
.matrix{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gap)}
.m-card{grid-column:span 4;display:flex;flex-direction:column;gap:10px}
.m-card.span-6{grid-column:span 6}
.m-card.span-3{grid-column:span 3}
.m-card.span-4{grid-column:span 4}
.m-card.feature{
  padding:0;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.9fr);align-items:stretch;
}
.m-card.feature .feature-body{padding:28px;display:flex;flex-direction:column;gap:10px}
.m-card.feature img{height:100%;width:100%;object-fit:cover;border-radius:0}
.m-icon{
  width:44px;height:44px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand-active);font-size:18px;
  clip-path:polygon(9px 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%,0 9px);
}
.m-card p{color:var(--muted);font-size:15px}
@media (max-width:1023px){
  .m-card,.m-card.span-6,.m-card.span-3,.m-card.span-4{grid-column:span 6}
  .m-card.feature{grid-template-columns:1fr}
  .m-card.feature img{aspect-ratio:16/9;height:auto}
}
@media (max-width:640px){
  .matrix{grid-template-columns:1fr}
  .m-card,.m-card.span-6,.m-card.span-3,.m-card.span-4{grid-column:span 1}
}

/* ---------- coverage ---------- */
.coverage{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 16px;border-radius:999px;
  border:1px solid var(--line);background:var(--bg);
  font-size:14px;font-weight:600;color:var(--text);
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.tag:hover{border-color:var(--brand);color:var(--brand-active);background:var(--brand-soft)}
.tag i{color:var(--brand)}
.cov-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.cov-card{padding:0;display:flex;flex-direction:column}
.cov-card img{aspect-ratio:16/10;width:100%;object-fit:cover;border-radius:0;transition:transform .22s ease}
.cov-card:hover img{transform:scale(1.03)}
.cov-card .cov-body{padding:22px 24px 26px}
.cov-card h3{font-size:18px;margin-bottom:8px}
.cov-card p{color:var(--muted);font-size:15px;margin-bottom:14px}
@media (max-width:1023px){.cov-grid{grid-template-columns:1fr 1fr}}
@media (max-width:640px){.cov-grid{grid-template-columns:1fr}}

/* ---------- workflow split ---------- */
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:center}
.split.reverse .split-media{order:2}
.split-media img{width:100%;aspect-ratio:5/4;object-fit:cover;border-radius:var(--radius-hero);box-shadow:var(--shadow-card)}
.step-list{margin-top:26px;display:flex;flex-direction:column;gap:20px}
.step{display:flex;gap:16px;align-items:flex-start}
.step-idx{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--ink);color:var(--lime);
  font-family:var(--mono);font-size:13px;font-weight:700;
}
.step h3{font-size:17px;margin-bottom:4px}
.step p{color:var(--muted);font-size:15px}
@media (max-width:1023px){
  .split{grid-template-columns:1fr;gap:32px}
  .split.reverse .split-media{order:0}
}

/* ---------- spec lines ---------- */
.spec-wrap{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.spec-list{border-top:1px solid var(--line)}
.spec-row{
  display:grid;grid-template-columns:minmax(0,220px) minmax(0,1fr);
  gap:24px;padding:20px 0;border-bottom:1px solid var(--line);
  align-items:baseline;
}
.spec-row dt{
  font-weight:800;font-size:16px;color:var(--ink);
  display:flex;align-items:center;gap:10px;
}
.spec-row dt::before{content:"";width:8px;height:8px;background:var(--brand);border-radius:2px;transform:rotate(45deg)}
.spec-row dd{margin:0;color:var(--muted);font-size:15px}
@media (max-width:640px){
  .spec-row{grid-template-columns:1fr;gap:8px}
}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:0;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 4px;cursor:pointer;text-align:left;
  font-size:17px;font-weight:700;color:var(--text);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--brand-active)}
.faq-q:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:8px}
.faq-mark{
  flex:0 0 auto;width:28px;height:28px;border-radius:8px;
  border:1px solid var(--line);position:relative;background:#fff;
}
.faq-mark::before,.faq-mark::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-active);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-mark::before{width:12px;height:2px}
.faq-mark::after{width:2px;height:12px;transition:transform .22s ease,opacity .22s ease}
.faq-item.is-open .faq-mark::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.faq-a p{padding:0 4px 24px;color:var(--muted);font-size:15px;max-width:820px}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;color:var(--ink-text);
  background:linear-gradient(rgba(12,22,24,.88),rgba(12,22,24,.92)),url("/assets/images/backpic/back-3.webp") center/cover no-repeat,var(--ink);
}
.cta-inner{display:grid;grid-template-columns:minmax(0,1.2fr) auto;gap:36px;align-items:center}
.cta-band h2{color:#fff;font-size:26px;padding-left:0}
.cta-band h2::before{display:none}
.cta-band p{color:#BFD2CE;margin-top:14px;max-width:640px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
@media (max-width:1023px){
  .cta-inner{grid-template-columns:1fr}
  .cta-actions .btn{width:100%}
}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:var(--ink-text);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:900;color:#fff;margin-bottom:16px}
.footer-desc{color:#A9BDB9;font-size:15px;max-width:340px}
.footer-title{font-size:15px;font-weight:800;color:#fff;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:#BFD2CE;font-size:15px}
.footer-links a:hover{color:var(--brand)}
.footer-contact{display:flex;flex-direction:column;gap:10px;color:#BFD2CE;font-size:15px}
.footer-contact strong{color:#fff;font-weight:700}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(232,241,239,.14);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  color:#8FA5A1;font-size:13px;
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-grid > div:first-child{grid-column:1 / -1}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
}

/* roulang page: article */
:root{
  --brand:#00C2A8;
  --brand-hover:#00A88F;
  --brand-active:#008D78;
  --brand-soft:#E6F7F4;
  --signal:#FF7A3D;
  --lime:#C8F24E;
  --ink:#0C1618;
  --ink-2:#13252A;
  --ink-text:#E8F1EF;
  --bg:#F4F6F5;
  --surface:#FFFFFF;
  --text:#1A2422;
  --text-2:#5C6B68;
  --line:#E1E7E4;
  --success:#2FA36B;
  --warn:#D99A16;
  --error:#D9483B;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-hero:20px;
  --sh-1:0 1px 2px rgba(12,22,24,.06);
  --sh-2:0 8px 24px -12px rgba(12,22,24,.18);
  --sh-hover:0 14px 32px -14px rgba(0,194,168,.35);
  --mono:'Roboto Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --font:'Noto Sans SC','PingFang SC','Microsoft YaHei',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
  border-radius:6px;
}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(244,246,245,.94);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 30px -22px rgba(12,22,24,.6)}
.header-inner{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  height:72px;
}
.nav{display:flex;align-items:center;gap:26px;flex:1;min-width:0}
.nav-left{justify-content:flex-start}
.nav-right{justify-content:flex-end}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--text-2);
  padding:9px 2px;
  white-space:nowrap;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:2px;
  height:2px;
  background:var(--brand);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s ease-out;
}
.nav-link:hover{color:var(--brand-active)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.brand{
  position:absolute;
  left:50%;
  transform:translateX(-50%);
  display:flex;
  align-items:center;
  gap:10px;
  font-size:19px;
  font-weight:900;
  color:var(--ink);
  letter-spacing:.01em;
}
.brand-mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  background:var(--brand);
  color:#fff;
  font-family:var(--mono);
  font-size:13px;
  font-weight:700;
  letter-spacing:.02em;
  border-radius:10px;
  clip-path:polygon(0 0,100% 0,100% 68%,70% 100%,0 100%);
}
.nav-toggle{
  display:none;
  position:absolute;
  right:20px;
  top:50%;
  transform:translateY(-50%);
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:10px;
  cursor:pointer;
  transition:background-color .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:var(--brand-soft);border-color:var(--brand)}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:background-color .2s ease}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .22s ease,top .22s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{top:0;transform:rotate(45deg)}
.nav-toggle.is-open span::after{top:0;transform:rotate(-45deg)}
.mobile-panel{
  display:none;
  flex-direction:column;
  background:var(--surface);
  border-top:1px solid var(--line);
}
.mobile-panel.is-open{display:flex}
.mobile-panel .nav-link{
  height:52px;
  display:flex;
  align-items:center;
  padding:0 20px;
  border-bottom:1px solid var(--line);
  font-size:16px;
}
.mobile-panel .nav-link::after{display:none}
.mobile-panel .nav-link.is-active{color:var(--brand-active);background:var(--brand-soft);border-left:3px solid var(--brand)}
.mobile-cta{padding:16px 20px 22px}
@media (max-width:1023px){
  .header-inner{height:64px}
  .nav-left,.nav-right{display:none}
  .nav-toggle{display:flex}
  .brand{font-size:17px}
  .brand-mark{width:34px;height:34px;font-size:12px}
}

/* ---------- buttons ---------- */
.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:700;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px -16px rgba(0,194,168,.9)}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px);box-shadow:var(--sh-hover)}
.btn-outline{border-color:var(--brand);color:var(--brand-active);background:transparent}
.btn-outline:hover{background:var(--brand-soft);transform:translateY(-1px)}
.btn-ghost{border-color:rgba(255,255,255,.32);color:#fff;background:transparent}
.btn-ghost:hover{background:var(--brand);border-color:var(--brand);transform:translateY(-1px)}
.btn[disabled]{opacity:.4;cursor:not-allowed}

/* ---------- badge / tag ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  font-size:13px;
  font-weight:700;
  background:var(--brand-soft);
  color:var(--brand-active);
  letter-spacing:.01em;
}
.badge-signal{background:rgba(255,122,61,.14);color:#C2521F}
.article-hero .badge{background:rgba(0,194,168,.18);color:#7FE6DA}
.tag{
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--surface);
  font-size:14px;
  color:var(--text-2);
  transition:color .2s ease,border-color .2s ease,background-color .2s ease;
}
.tag:hover{color:var(--brand-active);border-color:var(--brand);background:var(--brand-soft)}
.tag-label{font-size:14px;font-weight:700;color:var(--text-2)}

/* ---------- breadcrumb ---------- */
.crumb-bar{padding:20px 0 0}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--text-2)}
.breadcrumb a{color:var(--text-2);transition:color .2s ease}
.breadcrumb a:hover{color:var(--brand-active)}
.breadcrumb .sep{color:#B9C4C1}
.breadcrumb .current{
  color:var(--ink);
  font-weight:700;
  max-width:280px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
@media (max-width:520px){.breadcrumb .current{max-width:160px}}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;
  margin-top:20px;
  padding:56px 0 52px;
  border-radius:var(--r-hero);
  overflow:hidden;
  background-color:var(--ink);
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  color:var(--ink-text);
}
.article-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(115deg,rgba(12,22,24,.95) 0%,rgba(12,22,24,.86) 48%,rgba(12,22,24,.66) 100%);
}
.article-hero::after{
  content:"";
  position:absolute;
  top:-120px;left:-80px;
  width:420px;height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(0,194,168,.35) 0%,rgba(0,194,168,0) 68%);
  pointer-events:none;
}
.article-hero .container{position:relative;z-index:1}
.article-title{
  font-size:clamp(26px,3.4vw,40px);
  line-height:1.32;
  font-weight:900;
  color:#fff;
  margin:16px 0 18px;
  max-width:920px;
  letter-spacing:.005em;
}
.article-meta{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  font-size:14px;
  color:rgba(232,241,239,.72);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(232,241,239,.42)}
.article-meta strong{color:#fff;font-weight:700}
@media (max-width:767px){
  .article-hero{padding:36px 0 34px;border-radius:16px}
  .article-title{margin:14px 0 14px}
}

/* ---------- article layout ---------- */
.article-section{padding:44px 0 76px}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 330px;
  gap:40px;
  align-items:start;
}
.article-main{min-width:0}
.article-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-2);
  padding:40px 44px 44px;
  overflow-wrap:break-word;
}
@media (max-width:1279px){
  .article-card{padding:34px 32px 36px}
}
@media (max-width:767px){
  .article-card{padding:24px 20px 28px;border-radius:12px}
  .article-section{padding:32px 0 56px}
}

/* ---------- article body typography ---------- */
.article-body{font-size:17px;line-height:1.9;color:#26302E}
.article-body p{margin:0 0 1.2em}
.article-body p:first-child{font-size:18px;color:var(--text)}
.article-body h2{
  position:relative;
  font-size:26px;
  line-height:1.4;
  font-weight:800;
  color:var(--ink);
  margin:2.2em 0 .8em;
  padding-left:15px;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:.2em;bottom:.2em;
  width:3px;
  background:var(--brand);
  border-radius:2px;
}
.article-body h3{font-size:19px;font-weight:700;color:var(--ink);margin:1.8em 0 .6em}
.article-body h4{font-size:17px;font-weight:700;color:var(--ink);margin:1.5em 0 .5em}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em}
.article-body ul li{position:relative;margin:.45em 0;list-style:none}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:-1.15em;top:.68em;
  width:7px;height:7px;
  background:var(--brand);
  border-radius:2px;
}
.article-body ol{list-style:decimal}
.article-body ol li{margin:.45em 0}
.article-body img{border-radius:12px;margin:1.6em 0}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--text-2);text-align:center;margin-top:10px}
.article-body blockquote{
  margin:1.6em 0;
  padding:16px 22px;
  border-left:3px solid var(--brand);
  background:var(--brand-soft);
  border-radius:0 12px 12px 0;
  color:#22312E;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body a{color:var(--brand-active);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{color:var(--brand-hover)}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.article-body th{background:#F7FAF9;font-weight:700;color:var(--ink)}
.article-body tr:last-child td{border-bottom:none}
.article-body pre{
  background:var(--ink);
  color:var(--ink-text);
  padding:18px 20px;
  border-radius:12px;
  overflow-x:auto;
  font-family:var(--mono);
  font-size:14px;
  line-height:1.7;
  margin:1.6em 0;
}
.article-body code{font-family:var(--mono);font-size:.92em;background:#EEF3F2;padding:2px 6px;border-radius:6px;color:#1E3B36}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2.2em 0}
.article-body>*:first-child{margin-top:0}

/* ---------- empty ---------- */
.article-empty{text-align:center;padding:32px 8px 24px}
.empty-icon{
  width:56px;height:56px;
  margin:0 auto 18px;
  display:grid;place-items:center;
  border-radius:16px;
  background:var(--brand-soft);
  color:var(--brand-active);
  font-family:var(--mono);
  font-size:24px;
  font-weight:700;
}
.article-empty h2{font-size:22px;font-weight:800;color:var(--ink);margin-bottom:10px}
.article-empty p{color:var(--text-2);max-width:520px;margin:0 auto 22px;font-size:16px}

/* ---------- tags & actions ---------- */
.article-tags{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  margin-top:26px;
}
.article-actions{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:14px;
  margin-top:22px;
  padding-top:22px;
  border-top:1px solid var(--line);
}
.back-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:700;
  color:var(--brand-active);
  transition:color .2s ease,gap .2s ease;
}
.back-link:hover{color:var(--brand-hover);gap:12px}
.back-link .arrow{font-family:var(--mono)}

/* ---------- sidebar ---------- */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:22px;
}
.side-title{
  display:flex;
  align-items:center;
  gap:9px;
  font-size:15px;
  font-weight:800;
  color:var(--ink);
  margin-bottom:14px;
}
.side-title::before{content:"";width:3px;height:14px;background:var(--brand);border-radius:2px}
.toc-list{display:flex;flex-direction:column;gap:2px;counter-reset:toc}
.toc-list a{
  display:block;
  font-size:14.5px;
  color:var(--text-2);
  padding:7px 10px;
  border-left:2px solid var(--line);
  transition:color .2s ease,border-color .2s ease,background-color .2s ease;
}
.toc-list a:hover{color:var(--brand-active);border-left-color:var(--brand);background:var(--brand-soft)}
.side-card details summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
}
.side-card details summary::-webkit-details-marker{display:none}
.side-card details summary .side-title{margin-bottom:0}
.side-card details summary .chev{
  font-family:var(--mono);
  color:var(--brand-active);
  font-size:14px;
  transition:transform .22s ease;
}
.side-card details[open] summary .chev{transform:rotate(90deg)}
.side-card details[open] .toc-list{margin-top:14px}
.side-links{display:flex;flex-direction:column;gap:10px}
.side-links a{
  font-size:14.5px;
  color:var(--text-2);
  display:flex;
  align-items:center;
  gap:8px;
  transition:color .2s ease,transform .2s ease;
}
.side-links a::before{
  content:"";
  width:6px;height:6px;
  background:var(--brand);
  border-radius:2px;
  flex:none;
}
.side-links a:hover{color:var(--brand-active);transform:translateX(3px)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud a{
  font-size:13px;
  padding:6px 12px;
  border-radius:999px;
  background:#F1F5F4;
  color:var(--text-2);
  transition:background-color .2s ease,color .2s ease;
}
.tag-cloud a:hover{background:var(--brand-soft);color:var(--brand-active)}
.side-cta{
  background:var(--ink-2);
  border-color:transparent;
  color:var(--ink-text);
  text-align:left;
}
.side-cta .side-title{color:#fff}
.side-cta p{font-size:14.5px;color:rgba(232,241,239,.74);margin-bottom:16px}
@media (max-width:1023px){
  .article-layout{grid-template-columns:1fr;gap:30px}
  .article-side{position:static}
}

/* ---------- related ---------- */
.article-related{margin-top:38px}
.related-title{
  position:relative;
  font-size:22px;
  font-weight:800;
  color:var(--ink);
  margin-bottom:20px;
  padding-left:14px;
}
.related-title::before{
  content:"";
  position:absolute;left:0;top:.22em;bottom:.22em;
  width:3px;background:var(--brand);border-radius:2px;
}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.rel-card{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.rel-card:hover{box-shadow:var(--sh-hover);transform:translateY(-3px);border-color:#CFE9E4}
.rel-media{aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft)}
.rel-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.rel-card:hover .rel-media img{transform:scale(1.04)}
.rel-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.rel-body h3{font-size:16.5px;font-weight:700;color:var(--ink);transition:color .2s ease}
.rel-card:hover .rel-body h3{color:var(--brand-active)}
.rel-body p{font-size:14.5px;color:var(--text-2);line-height:1.7;flex:1}
.rel-more{font-size:13.5px;font-weight:700;color:var(--brand-active);font-family:var(--font)}
@media (max-width:1023px){.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.related-grid{grid-template-columns:1fr;gap:16px}}

/* ---------- cta ---------- */
.article-cta{
  position:relative;
  margin-top:0;
  padding:64px 0;
  background-color:var(--ink-2);
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
  color:var(--ink-text);
  overflow:hidden;
}
.article-cta::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(12,22,24,.96) 0%,rgba(12,22,24,.82) 60%,rgba(12,22,24,.7) 100%);
}
.cta-inner{
  position:relative;
  z-index:1;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-title{font-size:26px;font-weight:900;color:#fff;margin-bottom:10px}
.cta-text{font-size:16px;color:rgba(232,241,239,.78);max-width:640px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
@media (max-width:767px){
  .article-cta{padding:44px 0}
  .cta-title{font-size:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1;min-height:46px}
}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:var(--ink-text);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:900;font-size:18px;color:#fff;margin-bottom:14px}
.footer-brand .brand-mark{width:34px;height:34px;font-size:12px}
.footer-desc{font-size:14.5px;line-height:1.8;color:rgba(232,241,239,.72)}
.footer-title{font-size:14px;font-weight:700;color:#fff;letter-spacing:.05em;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14.5px;color:rgba(232,241,239,.72);transition:color .2s ease}
.footer-links a:hover{color:var(--brand)}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14.5px;color:rgba(232,241,239,.72)}
.footer-contact strong{color:#fff;font-weight:700}
.footer-bottom{
  margin-top:42px;
  padding-top:20px;
  border-top:1px solid rgba(232,241,239,.14);
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  font-size:13px;
  color:rgba(232,241,239,.58);
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-grid>div:first-child{grid-column:1/-1}
}
@media (max-width:520px){
  .site-footer{padding:48px 0 24px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
}

/* roulang page: category2 */
:root{
  --brand:#00C2A8;--brand-hover:#00A88F;--brand-active:#008D78;--brand-soft:#E6F7F4;
  --signal:#FF7A3D;--lime:#C8F24E;
  --ink:#0C1618;--ink-2:#13252A;--ink-text:#E8F1EF;
  --bg:#F4F6F5;--card:#FFFFFF;--text:#1A2422;--muted:#5C6B68;--line:#E1E7E4;
  --success:#2FA36B;--warn:#D99A16;--error:#D9483B;
  --r-card:14px;--r-btn:10px;--r-input:10px;--r-hero:20px;
  --sh-1:0 1px 2px rgba(12,22,24,.06);
  --sh-2:0 8px 24px -12px rgba(12,22,24,.18);
  --sh-3:0 14px 32px -14px rgba(0,194,168,.35);
  --font-mono:"Roboto Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;line-height:1.75;font-weight:400;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:var(--brand-soft);color:var(--brand-active)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:1024px){.container{padding:0 32px}}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2)}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:18px;height:72px;position:relative;
}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:900;font-size:20px;letter-spacing:.01em;white-space:nowrap}
.brand-mark{
  width:38px;height:38px;display:grid;place-items:center;flex:0 0 auto;
  background:var(--brand);color:#fff;font-family:var(--font-mono);
  font-weight:700;font-size:13px;letter-spacing:.02em;border-radius:12px;
  clip-path:polygon(0 0,calc(100% - 11px) 0,100% 11px,100% 100%,11px 100%,0 calc(100% - 11px));
}
.brand-text{color:var(--text)}
.brand:hover .brand-text{color:var(--brand)}
.nav{display:flex;align-items:center;gap:22px;flex:1}
.nav-left{justify-content:flex-start}
.nav-right{justify-content:flex-end}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  min-height:44px;padding:4px 2px;font-size:15px;color:var(--muted);
  transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:9px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease-out;
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  background:#fff;border-radius:var(--r-btn);cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--text);border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
  transition:transform .22s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle:hover{border-color:var(--brand);background:var(--brand-soft)}
.mobile-panel{display:none;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--sh-2)}
.mobile-panel.is-open{display:block}
.mobile-panel .nav-link{
  display:flex;width:100%;height:52px;min-height:52px;align-items:center;
  padding:0 20px;font-size:16px;border-bottom:1px solid var(--line);
}
.mobile-panel .nav-link::after{display:none}
.mobile-panel .nav-link.is-active{background:var(--brand-soft);color:var(--brand-active)}
.mobile-cta{padding:16px 20px}
@media(max-width:1023px){
  .header-inner{height:64px;justify-content:flex-end}
  .nav{display:none}
  .nav-toggle{display:inline-flex}
  .brand{position:absolute;left:50%;transform:translateX(-50%)}
}
@media(min-width:1024px){.mobile-panel{display:none!important}}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:11px 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;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;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px -12px rgba(0,194,168,.7)}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px)}
.btn-primary:active{background:var(--brand-active);transform:translateY(0)}
.btn-outline{border-color:var(--brand);color:var(--brand);background:#fff}
.btn-outline:hover{background:var(--brand-soft);transform:translateY(-1px)}
.btn-outline:active{background:var(--brand-soft);transform:translateY(0)}
.btn-ghost{border-color:rgba(255,255,255,.32);color:#fff;background:transparent}
.btn-ghost:hover{background:var(--brand);border-color:var(--brand);color:#fff}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}
.text-link{color:var(--brand);font-weight:700;font-size:15px;display:inline-flex;align-items:center;gap:6px;border-bottom:1px solid transparent;transition:border-color .2s ease,color .2s ease}
.text-link:hover{border-color:var(--signal);color:var(--brand-hover)}
.text-link i{font-size:12px;transition:transform .2s ease}
.text-link:hover i{transform:translateX(3px)}

/* ===== Badge / Tag ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-active);font-size:13px;font-weight:700;line-height:1.6;
}
.badge-signal{background:rgba(255,122,61,.14);color:#C9511B}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--muted);font-size:14px;
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.tag:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}

/* ===== Sections ===== */
.section{padding:56px 0}
@media(min-width:1024px){.section{padding:88px 0}}
.section-head{max-width:760px;margin-bottom:36px}
.section-title{
  position:relative;padding-left:14px;font-size:26px;line-height:1.35;font-weight:900;letter-spacing:.01em;
}
.section-title::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:2px;background:var(--brand);
}
.section-sub{margin-top:12px;color:var(--muted);font-size:16px}
@media(min-width:1024px){.section-title{font-size:32px}}

/* ===== Hero ===== */
.category-hero{
  position:relative;overflow:hidden;background:#fff;
  border-bottom:1px solid var(--line);
}
.category-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(12,22,24,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(12,22,24,.04) 1px,transparent 1px);
  background-size:44px 44px;pointer-events:none;
}
.category-hero::after{
  content:"";position:absolute;right:-140px;top:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,194,168,.16),rgba(0,194,168,0) 68%);pointer-events:none;
}
.hero-inner{position:relative;padding:44px 0 52px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);flex-wrap:wrap;margin-bottom:20px}
.breadcrumb a{color:var(--muted);transition:color .2s ease}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb i{font-size:10px;color:#9AA8A4}
.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:48px;align-items:center}
.hero-copy h1{
  font-size:34px;line-height:1.28;font-weight:900;letter-spacing:.01em;margin:14px 0 16px;
}
.hero-copy h1 em{font-style:normal;color:var(--brand)}
.hero-lead{font-size:18px;color:var(--muted);max-width:52ch}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-media{
  aspect-ratio:4/3;border-radius:var(--r-hero);overflow:hidden;
  background:var(--brand-soft);box-shadow:var(--sh-2);border:1px solid var(--line);
}
.hero-media img{width:100%;height:100%;object-fit:cover}
@media(min-width:1024px){.hero-copy h1{font-size:44px}}
@media(max-width:1023px){
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-media{aspect-ratio:16/9}
  .hero-inner{padding:32px 0 44px}
}

/* ===== Anchor bar ===== */
.anchor-bar{
  position:sticky;top:64px;z-index:50;background:#fff;border-bottom:1px solid var(--line);
}
.anchor-inner{display:flex;gap:8px;overflow-x:auto;padding:10px 0;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-link{
  flex:0 0 auto;display:inline-flex;align-items:center;padding:9px 16px;border-radius:999px;
  font-size:14px;font-weight:500;color:var(--muted);border:1px solid transparent;white-space:nowrap;
  transition:color .2s ease,background-color .2s ease,border-color .2s ease;
}
.anchor-link:hover{color:var(--brand);background:var(--brand-soft)}
.anchor-link.is-active{color:var(--brand-active);background:var(--brand-soft);border-color:rgba(0,194,168,.35);font-weight:700}
@media(min-width:1024px){.anchor-bar{top:72px}}

/* ===== Scenes ===== */
.scene{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  padding:48px 0;border-top:1px solid var(--line);
}
.scene:first-of-type{border-top:0;padding-top:8px}
.scene.is-flipped .scene-media{order:-1}
.scene-no{
  display:inline-block;font-family:var(--font-mono);font-size:52px;font-weight:700;
  line-height:1;letter-spacing:.02em;color:var(--brand);padding-bottom:10px;position:relative;
}
.scene-no::after{
  content:"";position:absolute;left:0;bottom:0;width:38px;height:2px;background:var(--brand);border-radius:2px;
}
.scene-title{font-size:19px;font-weight:900;margin:18px 0 12px;line-height:1.45}
.scene-text{color:var(--muted);font-size:16px}
.scene-points{display:grid;gap:12px;margin-top:22px}
.scene-points li{
  position:relative;padding-left:26px;color:var(--text);font-size:15.5px;
}
.scene-points li::before{
  content:"";position:absolute;left:0;top:.55em;width:10px;height:10px;border-radius:3px;
  background:var(--brand-soft);border:2px solid var(--brand);
}
.scene-media{
  aspect-ratio:16/11;border-radius:var(--r-card);overflow:hidden;background:var(--brand-soft);
  border:1px solid var(--line);box-shadow:var(--sh-1);
}
.scene-media img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease-out}
.scene-media:hover img{transform:scale(1.03)}
@media(max-width:1023px){
  .scene{grid-template-columns:1fr;gap:26px;padding:38px 0}
  .scene.is-flipped .scene-media{order:0}
  .scene-media{aspect-ratio:16/9}
  .scene-no{font-size:42px}
}

/* ===== Dark band ===== */
.dark-band{
  position:relative;color:var(--ink-text);background-color:var(--ink);
  background-image:linear-gradient(rgba(12,22,24,.93),rgba(19,37,42,.95)),url(/assets/images/backpic/back-3.webp);
  background-size:cover;background-position:center;
}
.dark-band .section-title{color:#fff}
.dark-band .section-title::before{background:var(--lime)}
.dark-band .section-sub{color:rgba(232,241,239,.72)}
.band-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.band-item{
  padding:24px;border-radius:var(--r-card);border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.04);
  transition:border-color .22s ease,transform .22s ease,background-color .22s ease;
}
.band-item:hover{border-color:rgba(0,194,168,.62);transform:translateY(-3px);background:rgba(0,194,168,.08)}
.band-item h3{font-size:17px;font-weight:700;color:#fff;display:flex;align-items:center;gap:10px}
.band-item h3 i{color:var(--brand)}
.band-item p{margin-top:10px;font-size:15px;color:rgba(232,241,239,.76)}
.band-item .band-meta{
  display:block;margin-top:14px;font-family:var(--font-mono);font-size:13px;letter-spacing:.02em;color:var(--lime);
}
@media(max-width:1023px){.band-grid{grid-template-columns:1fr}}

/* ===== FAQ ===== */
.faq{max-width:900px}
.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:18px;
  padding:22px 0;background:none;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:700;color:var(--text);line-height:1.6;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand)}
.faq-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);font-size:14px;
  transition:transform .26s ease,background-color .2s ease,color .2s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--brand);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.faq-a-inner{padding:0 44px 22px 0;color:var(--muted);font-size:16px}

/* ===== CTA band ===== */
.cta-band{background:var(--ink-2);color:var(--ink-text);position:relative;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;left:-120px;bottom:-160px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,194,168,.22),rgba(0,194,168,0) 70%);
}
.cta-inner{
  position:relative;display:flex;align-items:center;justify-content:space-between;
  gap:32px;padding:56px 0;
}
.cta-inner h2{font-size:26px;font-weight:900;line-height:1.4;color:#fff}
.cta-inner p{margin-top:10px;color:rgba(232,241,239,.76);font-size:16px;max-width:56ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.cta-band .text-link{color:#fff}
.cta-band .text-link:hover{color:var(--brand)}
@media(min-width:1024px){.cta-inner h2{font-size:32px}}
@media(max-width:1023px){.cta-inner{flex-direction:column;align-items:flex-start;padding:44px 0}}

/* ===== Footer ===== */
.site-footer{background:var(--ink);color:var(--ink-text);padding:56px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:900;color:#fff}
.footer-desc{margin-top:14px;font-size:14.5px;color:rgba(232,241,239,.68);max-width:38ch}
.footer-title{
  font-size:14px;font-weight:700;letter-spacing:.06em;color:rgba(232,241,239,.62);
  text-transform:uppercase;margin-bottom:14px;
}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:15px;color:rgba(232,241,239,.88);transition:color .2s ease}
.footer-links a:hover{color:var(--brand)}
.footer-contact{display:grid;gap:10px;font-size:15px;color:rgba(232,241,239,.8)}
.footer-contact strong{color:#fff;font-weight:700}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(232,241,239,.6);
}
@media(max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-grid>div:first-child{grid-column:1/-1}
}
@media(max-width:520px){
  .footer-grid{grid-template-columns:1fr}
}

/* roulang page: category3 */
:root{
  --brand:#00C2A8;
  --brand-hover:#00A88F;
  --brand-active:#008D78;
  --brand-soft:#E6F7F4;
  --signal:#FF7A3D;
  --lime:#C8F24E;
  --ink:#0C1618;
  --ink-2:#13252A;
  --ink-text:#E8F1EF;
  --bg:#F4F6F5;
  --card:#FFFFFF;
  --text:#1A2422;
  --muted:#5C6B68;
  --line:#E1E7E4;
  --success:#2FA36B;
  --warn:#D99A16;
  --error:#D9483B;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-hero:20px;
  --shadow-sm:0 1px 2px rgba(12,22,24,.06);
  --shadow-card:0 8px 24px -12px rgba(12,22,24,.18);
  --shadow-hover:0 14px 32px -14px rgba(0,194,168,.35);
  --container:1200px;
  --mono:'Roboto Mono','Noto Sans SC',ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-active);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-hover)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
  transition:box-shadow .26s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 26px -18px rgba(12,22,24,.55)}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  height:72px;
}
.nav{display:flex;align-items:center;gap:4px}
.nav-left{grid-column:1;justify-content:flex-start}
.nav-right{grid-column:3;justify-content:flex-end}
.brand{
  grid-column:2;justify-self:center;
  display:flex;align-items:center;gap:10px;
  font-weight:900;font-size:19px;color:var(--text);letter-spacing:.01em;
}
.brand:hover{color:var(--text)}
.brand-mark{
  width:36px;height:36px;flex:0 0 auto;
  display:grid;place-items:center;
  background:var(--brand);color:#04201C;
  font-family:var(--mono);font-weight:700;font-size:12px;letter-spacing:.02em;
  border-radius:10px;
  clip-path:polygon(0 0,100% 0,100% 68%,68% 100%,0 100%);
}
.brand-text{white-space:nowrap}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  padding:8px 12px;
  font-size:15px;
  color:var(--text);
  border-radius:8px;
  transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:'';position:absolute;left:12px;right:12px;bottom:3px;height:2px;
  background:var(--brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--brand-hover)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand-active);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-toggle{
  display:none;grid-column:3;justify-self:end;
  width:44px;height:44px;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);border-radius:10px;cursor:pointer;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:background .2s ease}
.nav-toggle span::before,.nav-toggle span::after{
  content:'';position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .22s ease,top .22s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{top:0;transform:rotate(45deg)}
.nav-toggle.is-open span::after{top:0;transform:rotate(-45deg)}
.mobile-panel{display:none;border-top:1px solid var(--line);background:#fff;padding:8px 20px 20px}
.mobile-panel.is-open{display:block}
.mobile-panel .nav-link{
  display:flex;align-items:center;
  min-height:52px;padding:0 8px;font-size:16px;border-radius:10px;
}
.mobile-panel .nav-link::after{display:none}
.mobile-panel .nav-link:hover,.mobile-panel .nav-link:focus-visible{background:var(--brand-soft)}
.mobile-panel .nav-link.is-active{color:var(--brand-active);background:var(--brand-soft)}
.mobile-cta{margin-top:12px}
@media (max-width:1023px){
  .nav-left,.nav-right{display:none}
  .header-inner{grid-template-columns:48px 1fr 48px;height:64px;gap:8px}
  .nav-toggle{display:flex}
  .brand{font-size:17px}
}

/* ---------- buttons & badges ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;
  border:1px solid transparent;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;line-height:1;
  cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--brand);color:#04201C;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-hover)}
.btn-primary:active{background:var(--brand-active);transform:translateY(1px);box-shadow:none}
.btn-secondary{background:#fff;color:var(--brand-active);border-color:var(--brand)}
.btn-secondary:hover{background:var(--brand-soft);color:var(--brand-active)}
.btn-secondary:active{background:#D3F1EB;transform:translateY(1px)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.34)}
.btn-ghost:hover{background:var(--brand);border-color:var(--brand);color:#04201C}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:13px;font-weight:700;line-height:1.4;
  background:var(--brand-soft);color:var(--brand-active);
}
.badge-signal{background:rgba(255,122,61,.14);color:#C9521F}
.badge-lime{background:rgba(200,242,78,.3);color:#4A5B14}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  background-color:#EEF5F3;
  background-image:linear-gradient(180deg,rgba(238,245,243,.93),rgba(244,246,245,.99)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.hero-grid{
  display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;
  padding:52px 0 64px;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand-hover)}
.breadcrumb .sep{color:#B7C2BF}
.breadcrumb .current{color:var(--text);font-weight:700}
.page-hero h1{font-size:34px;line-height:1.32;font-weight:900;letter-spacing:0}
.hero-lead{margin-top:16px;font-size:18px;color:#3C4A47;max-width:56ch}
.hero-tags{margin-top:20px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-hero);
  box-shadow:var(--shadow-card);
  background:var(--brand-soft);
}
@media (max-width:1023px){
  .hero-grid{grid-template-columns:1fr;gap:32px;padding:40px 0 52px}
  .page-hero h1{font-size:28px}
  .hero-lead{font-size:17px}
}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{max-width:720px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--brand-active);text-transform:none;
}
.eyebrow::before{content:'';width:22px;height:2px;background:var(--brand);border-radius:2px}
.section-title{
  margin-top:12px;font-size:26px;line-height:1.4;font-weight:900;
  padding-left:14px;border-left:3px solid var(--brand);
}
.section-desc{margin-top:16px;color:var(--muted);max-width:68ch}

/* ---------- dark kpi band ---------- */
.kpi-band{
  background-color:var(--ink);
  background-image:radial-gradient(900px 420px at 10% 0%,rgba(0,194,168,.22),transparent 62%),
                   linear-gradient(180deg,rgba(12,22,24,.9),rgba(12,22,24,.98)),
                   url('/assets/images/backpic/back-1.webp');
  background-size:cover,cover,cover;
  background-position:center;
  color:var(--ink-text);
}
.kpi-band .section-title{color:#fff}
.kpi-band .section-desc{color:rgba(232,241,239,.78)}
.kpi-band .eyebrow{color:var(--lime)}
.kpi-band .eyebrow::before{background:var(--lime)}
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:40px}
.kpi{
  background:rgba(255,255,255,.045);
  border:1px solid rgba(232,241,239,.14);
  border-radius:var(--radius-card);
  padding:24px;
  transition:border-color .22s ease,transform .22s ease,background .22s ease;
}
.kpi:hover{border-color:rgba(0,194,168,.6);background:rgba(0,194,168,.08);transform:translateY(-2px)}
.kpi-value{
  font-family:var(--mono);font-size:36px;font-weight:700;letter-spacing:.02em;color:#fff;
  display:inline-block;border-bottom:2px solid var(--brand);padding-bottom:6px;line-height:1.2;
}
.kpi-value small{font-size:16px;font-family:'Noto Sans SC',sans-serif;font-weight:700;margin-left:4px;color:var(--brand)}
.kpi-label{margin-top:14px;font-size:15px;font-weight:700;color:#fff}
.kpi-note{margin-top:6px;font-size:13px;color:rgba(232,241,239,.72);line-height:1.7}
@media (max-width:1023px){
  .kpi-grid{grid-template-columns:repeat(2,1fr)}
  .kpi-value{font-size:30px}
}
@media (max-width:560px){.kpi-grid{grid-template-columns:1fr}}

/* ---------- tools ---------- */
.tools-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center;margin-top:40px}
.check-list{margin-top:24px;display:grid;gap:14px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:16px;color:#33403D}
.check-list .dot{
  flex:0 0 auto;width:22px;height:22px;margin-top:3px;border-radius:6px;
  background:var(--brand-soft);color:var(--brand-active);
  display:grid;place-items:center;font-size:13px;font-weight:900;
  clip-path:polygon(0 0,100% 0,100% 72%,72% 100%,0 100%);
}
.check-list strong{color:var(--text)}
.text-link{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:15px;margin-top:24px;border-bottom:1px solid rgba(0,194,168,.45);padding-bottom:2px}
.text-link:hover{border-color:var(--signal);color:var(--brand-hover)}
.media-card{position:relative;border-radius:var(--radius-hero);overflow:hidden;box-shadow:var(--shadow-card);background:var(--brand-soft)}
.media-card img{width:100%;aspect-ratio:16/11;object-fit:cover;transition:transform .5s ease}
.media-card:hover img{transform:scale(1.03)}
.media-note{
  position:absolute;left:20px;bottom:20px;right:20px;
  background:rgba(12,22,24,.86);color:#fff;
  border-left:3px solid var(--brand);
  border-radius:12px;padding:14px 16px;font-size:14px;line-height:1.7;
}
.media-note strong{font-family:var(--mono);letter-spacing:.02em;color:var(--lime)}
.tool-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:36px}
.tool-strip-item{
  display:flex;gap:14px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-sm);
  transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.tool-strip-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:rgba(0,194,168,.45)}
.tool-strip-item .ic{
  flex:0 0 auto;width:40px;height:40px;border-radius:10px;
  background:var(--brand-soft);color:var(--brand-active);
  display:grid;place-items:center;font-weight:900;font-family:var(--mono);font-size:14px;
}
.tool-strip-item h3{font-size:16px;font-weight:700}
.tool-strip-item p{margin-top:4px;font-size:14px;color:var(--muted);line-height:1.7}
@media (max-width:1023px){
  .tools-grid{grid-template-columns:1fr;gap:32px}
  .tool-strip{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:620px){.tool-strip{grid-template-columns:1fr}}

/* ---------- flow ---------- */
.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;margin-top:44px}
.flow-step{position:relative;padding-top:22px;border-top:2px solid var(--line)}
.flow-step::before{
  content:'';position:absolute;top:-6px;left:0;width:10px;height:10px;border-radius:50%;
  background:#fff;border:2px solid var(--brand);
}
.flow-step:first-child::before{background:var(--brand)}
.flow-num{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--brand);letter-spacing:.02em;line-height:1}
.flow-title{margin-top:12px;font-size:17px;font-weight:700}
.flow-text{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.75}
@media (max-width:1023px){.flow{grid-template-columns:repeat(2,1fr);gap:24px}}
@media (max-width:620px){.flow{grid-template-columns:1fr}}

/* ---------- promise list ---------- */
.promise-list{margin-top:36px;border-bottom:1px solid var(--line)}
.promise-row{
  display:grid;grid-template-columns:220px 1fr;gap:28px;
  padding:22px 0;border-top:1px solid var(--line);
}
.promise-key{font-weight:700;font-size:16px;display:flex;align-items:center;gap:10px}
.promise-key::before{content:'';width:3px;height:18px;background:var(--brand);border-radius:2px;flex:0 0 auto}
.promise-val{color:var(--muted);font-size:15.5px;line-height:1.8}
@media (max-width:767px){
  .promise-row{grid-template-columns:1fr;gap:10px;padding:18px 0}
}

/* ---------- faq ---------- */
.faq{margin-top:36px;border-bottom:1px solid var(--line);max-width:900px}
.faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0;background:none;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:700;color:var(--text);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand-active)}
.faq-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand-active);
  display:grid;place-items:center;font-size:18px;line-height:1;font-weight:700;
  transition:transform .26s ease,background .26s ease,color .26s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--brand);color:#04201C}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.faq-a-inner{padding:0 0 22px;color:var(--muted);font-size:15.5px;line-height:1.85;max-width:76ch}

/* ---------- cta ---------- */
.cta-wrap{padding:0 0 88px}
.cta-band{
  background-color:var(--ink-2);
  background-image:radial-gradient(700px 320px at 88% 20%,rgba(0,194,168,.24),transparent 65%);
  color:var(--ink-text);
  border-radius:var(--radius-hero);
  padding:48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:24px;font-weight:900;color:#fff;line-height:1.45}
.cta-band p{margin-top:10px;color:rgba(232,241,239,.8);max-width:52ch;font-size:15.5px}
.cta-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.cta-actions .link-plain{color:var(--ink-text);font-weight:700;font-size:15px;border-bottom:1px solid rgba(232,241,239,.4);padding-bottom:2px}
.cta-actions .link-plain:hover{color:var(--brand)}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:var(--ink-text);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:900;color:#fff}
.footer-desc{margin-top:16px;font-size:14px;color:rgba(232,241,239,.7);line-height:1.8;max-width:36ch}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-links{display:grid;gap:11px}
.footer-links a{color:rgba(232,241,239,.78);font-size:14px}
.footer-links a:hover{color:var(--brand)}
.footer-contact{display:grid;gap:12px;font-size:14px;color:rgba(232,241,239,.78)}
.footer-contact strong{color:#fff;font-weight:700}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(232,241,239,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(232,241,239,.6);
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:620px){
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .cta-wrap{padding:0 0 56px}
  .cta-band{padding:32px 24px}
  .site-footer{padding:48px 0 24px}
}

/* roulang page: category4 */
/* ===== 设计变量 ===== */
:root{
  --brand:#00C2A8;
  --brand-hover:#00A88F;
  --brand-active:#008D78;
  --brand-soft:#E6F7F4;
  --signal:#FF7A3D;
  --lime:#C8F24E;
  --ink:#0C1618;
  --ink-2:#13252A;
  --ink-text:#E8F1EF;
  --page:#F4F6F5;
  --card:#FFFFFF;
  --text:#1A2422;
  --muted:#5C6B68;
  --line:#E1E7E4;
  --success:#2FA36B;
  --warn:#D99A16;
  --error:#D9483B;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-input:10px;
  --radius-hero:20px;
  --shadow-sm:0 1px 2px rgba(12,22,24,.06);
  --shadow-card:0 8px 24px -12px rgba(12,22,24,.18);
  --shadow-hover:0 14px 32px -14px rgba(0,194,168,.35);
  --gap:24px;
  --section-y:88px;
  --mono:"Roboto Mono","DIN Alternate",ui-monospace,SFMono-Regular,Menlo,monospace;
}

/* ===== Reset / base ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;
}
::selection{background:var(--brand);color:#fff}

/* ===== 容器 ===== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}

/* ===== 工具类 ===== */
.mono{font-family:var(--mono);letter-spacing:.02em}
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:var(--section-y) 0}}
.section-head{margin-bottom:32px;max-width:760px}
.section-title{display:flex;align-items:center;gap:12px;font-size:26px;line-height:1.32;font-weight:800;letter-spacing:0}
@media (min-width:1024px){.section-title{font-size:30px}}
.section-title::before{content:"";flex:0 0 3px;width:3px;height:24px;background:var(--brand);border-radius:2px}
.section-sub{margin-top:12px;color:var(--muted);font-size:16px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand-active);text-transform:uppercase}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:700;border:1px solid transparent;cursor:pointer;
  transition:background-color .22s ease-out,color .22s ease-out,border-color .22s ease-out,transform .22s ease-out,box-shadow .22s ease-out;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px);box-shadow:var(--shadow-hover)}
.btn-primary:active{background:var(--brand-active);transform:translateY(1px);box-shadow:none}
.btn-outline{background:transparent;color:var(--brand-active);border-color:var(--brand)}
.btn-outline:hover{background:var(--brand-soft);transform:translateY(-1px)}
.btn-outline:active{background:var(--brand-soft);transform:translateY(1px)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}
.btn-ghost:hover{background:var(--brand);border-color:var(--brand);transform:translateY(-1px)}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand-active);font-weight:700;font-size:15px;border-bottom:1px solid transparent;transition:border-color .22s ease-out,color .22s ease-out}
.text-link:hover{border-color:var(--signal);color:var(--signal)}

/* ===== 徽章 / 标签 ===== */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:13px;font-weight:700;background:var(--brand-soft);color:var(--brand-active)}
.badge-signal{background:rgba(255,122,61,.14);color:#C24E17}
.badge-lime{background:rgba(200,242,78,.28);color:#4A5E0B}
.tag{display:inline-flex;align-items:center;padding:5px 14px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:14px;color:var(--muted)}
.tag:hover{border-color:var(--brand);color:var(--brand-active)}

/* ===== Header / Nav ===== */
.site-header{
  position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease-out;
}
.site-header.is-scrolled{box-shadow:0 6px 20px -14px rgba(12,22,24,.35)}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  gap:16px;height:72px;
}
.nav{display:none;align-items:center;gap:26px}
@media (min-width:1024px){.nav{display:flex}}
.nav-left{justify-self:start}
.nav-right{justify-self:end}
.nav-link{
  position:relative;padding:10px 2px;font-size:15.5px;font-weight:500;color:var(--text);
  transition:color .2s ease-out;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:2px;width:0;height:2px;background:var(--brand);
  transition:width .25s ease-out;
}
.nav-link:hover{color:var(--brand-active)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--brand-active);font-weight:700}
.nav-link.is-active::after{width:100%}
.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:900;justify-self:center}
.brand-mark{
  display:grid;place-items:center;width:36px;height:36px;background:var(--brand);color:#fff;
  font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:.02em;
  clip-path:polygon(0 0,100% 0,100% 72%,72% 100%,0 100%);
  border-radius:8px;
}
.brand-text{white-space:nowrap}
.nav-toggle{
  display:grid;place-items:center;justify-self:end;width:44px;height:44px;
  background:transparent;border:1px solid var(--line);border-radius:var(--radius-btn);cursor:pointer;
}
@media (min-width:1024px){.nav-toggle{display:none}}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  display:block;width:18px;height:2px;background:var(--text);border-radius:2px;content:"";position:relative;
  transition:transform .25s ease-out,opacity .2s ease-out;
}
.nav-toggle span::before{position:absolute;top:-6px}
.nav-toggle span::after{position:absolute;top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}
.mobile-panel{
  overflow:hidden;max-height:0;background:#fff;border-top:1px solid transparent;
  transition:max-height .3s ease-out,border-color .3s ease-out;
}
.mobile-panel.is-open{max-height:520px;border-top-color:var(--line)}
@media (min-width:1024px){.mobile-panel{display:none}}
.mobile-panel .nav-link{display:flex;align-items:center;min-height:52px;padding:0 20px;border-bottom:1px solid var(--line);font-size:16px}
.mobile-panel .nav-link::after{display:none}
.mobile-panel .nav-link.is-active{background:var(--brand-soft)}
.mobile-cta{padding:16px 20px 22px}

/* ===== Hero（分类页紧凑型） ===== */
.hero{
  position:relative;background-color:var(--ink);color:var(--ink-text);
  background-image:linear-gradient(120deg,rgba(12,22,24,.94) 0%,rgba(12,22,24,.78) 46%,rgba(12,22,24,.58) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  padding:44px 0 56px;
}
@media (min-width:1024px){.hero{padding:56px 0 72px}}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(232,241,239,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(232,241,239,.05) 1px,transparent 1px);
  background-size:44px 44px;opacity:.9;
}
.hero-inner{position:relative;z-index:2;display:grid;gap:36px;align-items:center}
@media (min-width:1024px){.hero-inner{grid-template-columns:1.15fr .85fr;gap:48px}}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(232,241,239,.72)}
.breadcrumb a{color:rgba(232,241,239,.86);transition:color .2s ease-out}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:var(--brand)}
.hero h1{
  margin-top:18px;font-size:34px;line-height:1.28;font-weight:900;color:#fff;letter-spacing:0;
}
@media (min-width:1024px){.hero h1{font-size:44px;line-height:1.2}}
.hero-lead{margin-top:16px;max-width:620px;font-size:17px;color:rgba(232,241,239,.86)}
.hero-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:14px}
.hero-stats{margin-top:34px;display:grid;grid-template-columns:repeat(2,1fr);gap:18px 24px;max-width:560px}
@media (min-width:640px){.hero-stats{grid-template-columns:repeat(4,1fr)}}
.hero-stat .num{font-family:var(--mono);font-size:24px;font-weight:700;color:#fff;letter-spacing:.02em;border-bottom:2px solid var(--brand);display:inline-block;padding-bottom:4px}
.hero-stat .lbl{display:block;margin-top:8px;font-size:13.5px;color:rgba(232,241,239,.7)}
.hero-figure{
  position:relative;border-radius:var(--radius-hero);overflow:hidden;
  border:1px solid rgba(232,241,239,.16);box-shadow:0 24px 48px -24px rgba(0,0,0,.6);
}
.hero-figure img{aspect-ratio:4/3;object-fit:cover;width:100%}
.hero-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:26px 20px 16px;font-size:13.5px;color:rgba(255,255,255,.86);
  background:linear-gradient(180deg,rgba(12,22,24,0),rgba(12,22,24,.85));
}

/* ===== 卡片 ===== */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-sm);
  transition:box-shadow .22s ease-out,transform .22s ease-out,border-color .22s ease-out;
}
.card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:rgba(0,194,168,.4)}
.card h3{font-size:19px;font-weight:800;line-height:1.45;transition:color .22s ease-out}
.card:hover h3{color:var(--brand-active)}
.card p{margin-top:10px;color:var(--muted);font-size:15.5px}
.card .card-icon{
  display:grid;place-items:center;width:44px;height:44px;border-radius:12px;
  background:var(--brand-soft);color:var(--brand-active);font-size:18px;margin-bottom:16px;
}
.card .card-link{margin-top:16px;display:inline-flex}
.card-media{
  margin:-26px -26px 22px;border-radius:13px 13px 0 0;overflow:hidden;
}
.card-media img{aspect-ratio:16/9;object-fit:cover;width:100%;transition:transform .3s ease-out}
.card:hover .card-media img{transform:scale(1.03)}
.card-cut{clip-path:polygon(0 0,100% 0,100% 88%,calc(100% - 14px) 100%,0 100%)}

/* ===== 栏目构成网格（非等宽） ===== */
.grid-12{display:grid;grid-template-columns:1fr;gap:var(--gap)}
@media (min-width:768px){.grid-12{grid-template-columns:repeat(12,1fr)}}
.col-6{grid-column:span 12}
.col-3{grid-column:span 12}
.col-4{grid-column:span 12}
@media (min-width:768px){
  .col-6{grid-column:span 6}
  .col-3{grid-column:span 6}
  .col-4{grid-column:span 4}
}
@media (min-width:1024px){
  .col-3{grid-column:span 3}
}
.card-feature{display:flex;flex-direction:column}
.card-feature .card-media{aspect-ratio:auto}
.card-feature p{font-size:16px}

/* ===== 流程 ===== */
.process{display:grid;gap:18px;grid-template-columns:1fr}
@media (min-width:640px){.process{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.process{grid-template-columns:repeat(5,1fr)}}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 20px;box-shadow:var(--shadow-sm);transition:box-shadow .22s ease-out,transform .22s ease-out;
}
.step:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.step .step-num{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--brand);letter-spacing:.02em;border-bottom:2px solid var(--brand);display:inline-block;padding-bottom:3px}
.step h3{margin-top:16px;font-size:17px;font-weight:800}
.step p{margin-top:8px;font-size:14.5px;color:var(--muted)}
.step::after{
  content:"";position:absolute;right:-9px;top:50%;width:18px;height:2px;background:var(--line);display:none;
}
@media (min-width:1024px){.step:not(:last-child)::after{display:block}}

/* ===== 方案卡 ===== */
.plans{display:grid;gap:var(--gap);grid-template-columns:1fr}
@media (min-width:768px){.plans{grid-template-columns:repeat(3,1fr);align-items:start}}
.plan{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:30px 26px;box-shadow:var(--shadow-sm);transition:box-shadow .22s ease-out,transform .22s ease-out,border-color .22s ease-out;
}
.plan:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.plan-featured{border-color:var(--brand);border-width:2px;box-shadow:var(--shadow-card)}
@media (min-width:768px){.plan-featured{transform:scale(1.03)}.plan-featured:hover{transform:scale(1.03) translateY(-3px)}}
.plan-badge{position:absolute;top:-14px;left:26px;padding:5px 14px;border-radius:999px;background:var(--signal);color:#fff;font-size:13px;font-weight:700}
.plan h3{font-size:20px;font-weight:800}
.plan .price{margin-top:14px;font-family:var(--mono);font-size:34px;font-weight:700;color:var(--text);letter-spacing:.02em}
.plan .price small{font-family:"Noto Sans SC",sans-serif;font-size:14px;font-weight:500;color:var(--muted);letter-spacing:0;margin-left:4px}
.plan .plan-desc{margin-top:10px;color:var(--muted);font-size:15px}
.plan ul{margin-top:20px;display:grid;gap:12px}
.plan li{display:flex;gap:10px;font-size:15px;color:var(--text)}
.plan li i{color:var(--brand);font-size:14px;margin-top:6px}
.plan .btn{margin-top:24px;width:100%}
@media (max-width:767px){
  .plans .plan-featured{order:-1;transform:none}
}

/* ===== 功能对照细线行 ===== */
.compare-wrap{margin-top:36px;overflow-x:auto;border-radius:var(--radius-card);border:1px solid var(--line);background:#fff}
.compare{min-width:680px}
.compare-row{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:12px;padding:16px 24px;border-bottom:1px solid var(--line);font-size:15px}
.compare-row:last-child{border-bottom:none}
.compare-row span:first-child{color:var(--muted)}
.compare-row span:not(:first-child){text-align:center;font-family:var(--mono);letter-spacing:.02em}
.compare-head span{font-family:"Noto Sans SC",sans-serif;font-weight:800;color:var(--text)}
.compare-head span:not(:first-child){font-weight:800}
.compare-row.is-highlight{background:var(--brand-soft)}
.compare-row.is-highlight span:nth-child(3){color:var(--brand-active);font-weight:700}

/* ===== FAQ 手风琴 ===== */
.faq{max-width:900px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:transparent;border:none;padding:22px 2px;text-align:left;cursor:pointer;
  font-size:18px;font-weight:700;color:var(--text);transition:color .2s ease-out;
}
.faq-q:hover{color:var(--brand-active)}
.faq-icon{
  flex:0 0 28px;width:28px;height:28px;display:grid;place-items:center;border-radius:50%;
  border:1px solid var(--line);color:var(--brand-active);font-size:14px;
  transition:transform .26s ease-out,background-color .26s ease-out,border-color .26s ease-out;
}
.faq-q[aria-expanded="true"] .faq-icon{transform:rotate(45deg);background:var(--brand-soft);border-color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease-out}
.faq-a-inner{padding:0 2px 24px;color:var(--muted);font-size:16px;max-width:780px}

/* ===== 表单 ===== */
.consult{
  background:var(--ink);color:var(--ink-text);border-radius:var(--radius-hero);
  padding:36px 24px;position:relative;overflow:hidden;
}
@media (min-width:768px){.consult{padding:52px 48px}}
.consult::before{
  content:"";position:absolute;width:320px;height:320px;right:-90px;top:-120px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,194,168,.28),rgba(0,194,168,0) 68%);
}
.consult-grid{position:relative;display:grid;gap:32px}
@media (min-width:1024px){.consult-grid{grid-template-columns:.9fr 1.1fr;gap:48px}}
.consult h2{font-size:26px;font-weight:800;color:#fff;line-height:1.35}
.consult p{color:rgba(232,241,239,.78);margin-top:14px;font-size:16px}
.consult-list{margin-top:22px;display:grid;gap:12px}
.consult-list li{display:flex;gap:10px;font-size:15px;color:rgba(232,241,239,.9)}
.consult-list i{color:var(--brand);margin-top:5px;font-size:14px}
.form-grid{display:grid;gap:18px;grid-template-columns:1fr}
@media (min-width:640px){.form-grid{grid-template-columns:1fr 1fr}.field-full{grid-column:1 / -1}}
.field label{display:block;font-size:14.5px;font-weight:600;margin-bottom:8px;color:#fff}
.field .req::after{content:" *";color:var(--signal)}
.field input,.field select,.field textarea{
  width:100%;background:#fff;border:1px solid var(--line);border-radius:var(--radius-input);
  padding:12px 14px;font-size:15.5px;color:var(--text);transition:border-color .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out;
}
.field textarea{min-height:112px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--muted)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(0,194,168,.28);background:#fff;
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--error);box-shadow:0 0 0 3px rgba(217,72,59,.18)}
.field .err-msg{display:none;margin-top:6px;font-size:13px;color:#FFB3A8}
.field.has-error .err-msg{display:block}
.field .hint{margin-top:6px;font-size:13px;color:rgba(232,241,239,.6)}
.check{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:rgba(232,241,239,.82)}
.check input{width:18px;height:18px;margin-top:4px;accent-color:var(--brand);flex:0 0 auto}
.check a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.form-actions{margin-top:6px;display:flex;flex-wrap:wrap;align-items:center;gap:16px}

/* ===== CTA 条 ===== */
.cta-band{
  background:var(--ink-2);color:var(--ink-text);border-radius:var(--radius-hero);
  padding:36px 24px;display:grid;gap:24px;align-items:center;
}
@media (min-width:768px){.cta-band{padding:48px;grid-template-columns:1.4fr auto;gap:36px}}
.cta-band h2{font-size:24px;font-weight:800;color:#fff}
@media (min-width:1024px){.cta-band h2{font-size:28px}}
.cta-band p{margin-top:12px;color:rgba(232,241,239,.78);font-size:16px;max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ===== Footer ===== */
.site-footer{background:var(--ink);color:var(--ink-text);padding:56px 0 28px;margin-top:56px}
@media (min-width:1024px){.site-footer{padding:72px 0 28px;margin-top:88px}}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:#fff}
.footer-desc{margin-top:14px;font-size:14.5px;color:rgba(232,241,239,.7);max-width:340px}
.footer-title{font-size:15px;font-weight:800;color:#fff;margin-bottom:14px}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14.5px;color:rgba(232,241,239,.78);transition:color .2s ease-out}
.footer-links a:hover{color:var(--brand)}
.footer-contact{display:grid;gap:10px;font-size:14.5px;color:rgba(232,241,239,.78)}
.footer-contact strong{color:#fff;font-weight:600}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(232,241,239,.14);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13.5px;color:rgba(232,241,239,.6);
}

/* ===== 动效降级 ===== */
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
}