/* roulang page: index */
:root{
  --brand:#FF6B1A;
  --brand-deep:#D9540A;
  --brand-soft:#FFF1E7;
  --accent:#17C3A2;
  --accent-soft:#E6F9F4;
  --paper:#FBF9F6;
  --card:#FFFFFF;
  --dark:#14161A;
  --ink-900:#14161A;
  --ink-700:#3A3F45;
  --ink-400:#8A9099;
  --line:#E7E4DF;
  --radius-card:16px;
  --radius-img:16px;
  --radius-input:12px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(20,22,26,.06);
  --shadow-2:0 16px 40px -20px rgba(20,22,26,.18);
  --container:1200px;
  --section-y:clamp(64px,9vw,128px);
  --font-cn:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  --font-num:Inter,Manrope,"HarmonyOS Sans","PingFang SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-900);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
h1,h2,h3,h4{line-height:1.15;font-weight:800;letter-spacing:-.01em;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}
: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 24px;}
.section{padding:var(--section-y) 0;}
.section--tight{padding:calc(var(--section-y) * .62) 0;}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  height:72px;
  background:rgba(251,249,246,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-1);background:rgba(251,249,246,.97);}
.nav-inner{height:72px;display:flex;align-items:center;gap:24px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  display:grid;place-items:center;color:#fff;font-size:15px;font-weight:800;
  letter-spacing:0;
}
.logo-text{font-size:16px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:12px;flex:1;}
.nav-menu a{
  display:inline-flex;align-items:center;height:38px;padding:0 12px;border-radius:10px;
  font-size:14.5px;font-weight:500;color:var(--ink-700);position:relative;
  transition:color .2s ease,background .2s ease;
}
.nav-menu a:hover{color:var(--ink-900);background:rgba(20,22,26,.045);}
.nav-menu a.is-active{color:var(--ink-900);font-weight:700;}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--brand);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-search{
  display:flex;align-items:center;gap:8px;width:200px;height:40px;padding:0 14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-pill);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search svg{flex-shrink:0;color:var(--ink-400);}
.nav-search input{border:0;outline:none;width:100%;font-size:14px;background:transparent;color:var(--ink-900);}
.nav-search input::placeholder{color:var(--ink-400);}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,107,26,.15);}
.nav-text-btn{font-size:14.5px;font-weight:600;color:var(--ink-700);padding:8px 10px;border-radius:10px;transition:color .2s ease,background .2s ease;}
.nav-text-btn:hover{color:var(--brand-deep);background:var(--brand-soft);}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:700;line-height:1;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{border:1.5px solid var(--ink-900);color:var(--ink-900);background:transparent;}
.btn-ghost:hover{background:var(--ink-900);color:#fff;transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--ink-900);}
.btn-light:hover{background:var(--brand-soft);color:var(--brand-deep);transform:translateY(-1px);}
.btn-sm{padding:10px 18px;font-size:13.5px;}
.btn-block{width:100%;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:700;color:var(--ink-900);
  border-bottom:2px solid var(--brand);padding-bottom:2px;
  transition:color .2s ease,border-color .2s ease;
}
.text-link:hover{color:var(--brand-deep);border-color:var(--brand-deep);}

/* ---------- badges / eyebrow ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:700;letter-spacing:.06em;
}
.badge-soft{background:var(--brand-soft);color:var(--brand-deep);}
.badge-accent{background:var(--accent-soft);color:#0E8F78;}
.badge-dark{background:rgba(255,255,255,.12);color:#fff;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.08em;color:var(--brand-deep);
  text-transform:uppercase;
}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--brand);display:block;}

/* ---------- hero ---------- */
.hero{position:relative;padding:132px 0 clamp(56px,7vw,96px);overflow:hidden;}
.hero::before{
  content:"";position:absolute;top:-140px;right:-120px;width:640px;height:640px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,107,26,.08),rgba(255,107,26,0) 68%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;position:relative;}
.hero h1{
  font-size:clamp(34px,5.2vw,68px);
  font-weight:800;line-height:1.06;letter-spacing:-.02em;margin:20px 0 18px;
}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero-sub{font-size:clamp(16px,1.5vw,19px);line-height:1.7;color:var(--ink-700);max-width:540px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 34px;}
.hero-metrics{display:flex;flex-wrap:wrap;gap:36px;border-top:1px solid var(--line);padding-top:22px;}
.hero-metrics div strong{display:block;font-size:26px;font-weight:800;letter-spacing:-.02em;font-family:var(--font-num);}
.hero-metrics div span{font-size:13px;color:var(--ink-400);letter-spacing:.04em;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:20px;box-shadow:var(--shadow-2);
}
.hero-float{
  position:absolute;left:-18px;bottom:-22px;width:min(300px,90%);
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:16px;box-shadow:var(--shadow-2);
}
.hf-row{display:flex;align-items:center;gap:10px;}
.hf-avatar{
  width:36px;height:36px;border-radius:50%;flex-shrink:0;
  background:var(--brand-soft);color:var(--brand-deep);
  display:grid;place-items:center;font-weight:800;font-size:14px;
}
.hf-row strong{display:block;font-size:14px;line-height:1.3;}
.hf-row small{font-size:12px;color:var(--ink-400);}
.hf-row .badge{margin-left:auto;}
.hf-bar{height:6px;border-radius:99px;background:var(--line);margin:14px 0 12px;overflow:hidden;}
.hf-bar span{display:block;height:100%;width:78%;border-radius:99px;background:linear-gradient(135deg,var(--brand),var(--brand-deep));}

/* ---------- section head ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;}
.section-head h2{font-size:clamp(26px,3.4vw,44px);font-weight:800;line-height:1.15;margin-top:12px;}
.section-head p{color:var(--ink-700);margin-top:12px;max-width:640px;}
.section-head--center{flex-direction:column;align-items:center;text-align:center;}
.section-head--center p{margin-left:auto;margin-right:auto;}

/* ---------- pain points ---------- */
.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.pain-item{
  background:transparent;border-top:1px solid var(--line);padding:28px 0 0;
  transition:border-color .3s ease;
}
.pain-item:nth-child(2){transform:translateY(48px);}
.pain-num{
  font-family:var(--font-num);font-size:clamp(28px,4vw,52px);font-weight:800;line-height:1;
  color:transparent;-webkit-text-stroke:1.5px var(--line);letter-spacing:-.02em;
  transition:-webkit-text-stroke-color .3s ease,color .3s ease;
}
.pain-item:hover{border-top-color:var(--brand);}
.pain-item:hover .pain-num{-webkit-text-stroke-color:var(--brand);}
.pain-item h3{font-size:20px;font-weight:700;margin:16px 0 8px;}
.pain-item p{font-size:15px;color:var(--ink-700);line-height:1.8;}

/* ---------- split feature ---------- */
.split{display:grid;grid-template-columns:6fr 5fr;gap:56px;align-items:center;padding:44px 0;border-top:1px solid var(--line);}
.split:first-of-type{border-top:0;}
.split--reverse .split-media{order:-1;}
.split h3{font-size:clamp(22px,2.4vw,30px);font-weight:800;line-height:1.25;margin:14px 0 14px;}
.split p{color:var(--ink-700);}
.split ul{margin-top:20px;display:grid;gap:12px;}
.split li{display:flex;gap:12px;font-size:15px;color:var(--ink-700);}
.split li i{
  flex-shrink:0;width:20px;height:20px;margin-top:6px;border-radius:50%;
  background:var(--accent-soft);color:#0E8F78;display:grid;place-items:center;font-size:11px;font-weight:800;
}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img);box-shadow:var(--shadow-1);}

/* ---------- stats ---------- */
.stats{background:var(--dark);color:#fff;border-radius:0;padding:clamp(56px,7vw,96px) 0;}
.stats .section-head h2{color:#fff;}
.stats .eyebrow{color:#FFB98C;}
.stats .eyebrow i{background:var(--brand);}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);margin-top:20px;}
.stat{padding:8px 24px;border-left:1px solid rgba(255,255,255,.12);}
.stat:first-child{border-left:0;padding-left:0;}
.stat strong{display:block;font-family:var(--font-num);font-size:clamp(40px,6vw,88px);font-weight:800;line-height:1;letter-spacing:-.03em;}
.stat strong small{font-size:.42em;font-weight:700;margin-left:4px;color:rgba(255,255,255,.6);}
.stat span{display:block;margin-top:14px;font-size:14px;color:rgba(255,255,255,.62);line-height:1.7;}

/* ---------- testimonials ---------- */
.testi-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 24px 28px;margin:0 -24px;
  scrollbar-width:thin;
}
.testi-track::-webkit-scrollbar{height:6px;}
.testi-track::-webkit-scrollbar-thumb{background:var(--line);border-radius:99px;}
.testi-card{
  flex:0 0 360px;scroll-snap-align:start;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;
  box-shadow:var(--shadow-1);transition:box-shadow .25s ease,transform .25s ease;
}
.testi-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.testi-card .quote{font-size:40px;line-height:1;font-weight:800;color:var(--brand);font-family:var(--font-num);}
.testi-card p{font-size:15.5px;color:var(--ink-700);margin:14px 0 22px;line-height:1.85;}
.testi-user{display:flex;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:16px;}
.testi-user .avatar{
  width:40px;height:40px;border-radius:50%;background:var(--brand-soft);color:var(--brand-deep);
  display:grid;place-items:center;font-weight:800;font-size:14px;flex-shrink:0;
}
.testi-user strong{display:block;font-size:14.5px;}
.testi-user span{font-size:12.5px;color:var(--ink-400);}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.step-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;position:relative;overflow:hidden;
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.step-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--brand);
  transform:scaleY(0);transform-origin:top;transition:transform .3s ease;
}
.step-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#F3D9C7;}
.step-card:hover::before{transform:scaleY(1);}
.step-card .step-no{
  display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:10px;
  background:var(--brand-soft);color:var(--brand-deep);font-weight:800;font-size:14px;font-family:var(--font-num);
}
.step-card h3{font-size:19px;font-weight:700;margin:16px 0 10px;}
.step-card p{font-size:15px;color:var(--ink-700);}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  transition:box-shadow .25s ease,transform .25s ease;
}
.news-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.news-card-link{display:flex;flex-direction:column;height:100%;}
.news-thumb{position:relative;overflow:hidden;}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s cubic-bezier(.22,.61,.36,1);}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-body h3{
  font-size:18px;font-weight:700;line-height:1.4;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body p{
  font-size:15px;color:var(--ink-700);line-height:1.75;flex:1;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body time{font-size:13px;color:var(--ink-400);font-family:var(--font-num);}
.news-empty{
  border:1px dashed var(--line);border-radius:var(--radius-card);background:#fff;
  padding:64px 24px;text-align:center;
}
.news-empty p{color:var(--ink-400);font-size:15px;}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;align-items:start;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item.is-open{border-color:var(--brand);box-shadow:var(--shadow-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;text-align:left;font-size:16.5px;font-weight:700;line-height:1.5;
}
.faq-icon{position:relative;width:18px;height:18px;flex-shrink:0;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .28s ease,opacity .28s ease;
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s cubic-bezier(.22,.61,.36,1);}
.faq-a p{padding:0 22px 22px;font-size:15px;color:var(--ink-700);line-height:1.85;}

/* ---------- final cta ---------- */
.cta-band{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#fff;padding:clamp(56px,7vw,100px) 0;
}
.cta-band .inner{max-width:760px;margin:0 auto;text-align:center;}
.cta-band h2{font-size:clamp(26px,3.6vw,46px);font-weight:800;line-height:1.2;}
.cta-band p{margin:18px 0 30px;font-size:16.5px;color:rgba(255,255,255,.88);}
.cta-band .btn-light{box-shadow:var(--shadow-2);}
.cta-band .cta-note{display:block;margin-top:18px;font-size:13.5px;color:rgba(255,255,255,.78);}
.cta-band .cta-note a{border-bottom:1px solid rgba(255,255,255,.6);padding-bottom:1px;}
.cta-band .cta-note a:hover{color:#fff;border-color:#fff;}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.62);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:2fr 1.2fr 1.2fr 1.4fr;gap:40px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{font-size:14.5px;line-height:1.9;margin-top:18px;max-width:320px;}
.footer-col h4{color:#fff;font-size:14px;font-weight:700;letter-spacing:.06em;margin-bottom:18px;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:14.5px;transition:color .2s ease;}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-contact li{font-size:14.5px;display:flex;gap:8px;}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;
}
.footer-bottom a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.to-top{display:inline-flex;align-items:center;gap:6px;}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);}
.reveal.is-visible{
  opacity:1;transform:none;
  transition:opacity .6s cubic-bezier(.22,.61,.36,1),transform .6s cubic-bezier(.22,.61,.36,1);
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal,.reveal.is-visible{opacity:1;transform:none;transition:none;}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}

/* ---------- mobile drawer ---------- */
.drawer{
  position:fixed;inset:72px 0 0;background:var(--paper);z-index:75;
  padding:24px;display:none;flex-direction:column;gap:20px;overflow-y:auto;
}
.drawer.is-open{display:flex;}
.drawer-nav{display:grid;gap:4px;}
.drawer-nav a{padding:14px 12px;border-radius:12px;font-size:20px;font-weight:600;color:var(--ink-900);}
.drawer-nav a.is-active{background:var(--brand-soft);color:var(--brand-deep);}
.drawer-actions{display:grid;gap:12px;margin-top:8px;}

/* ---------- responsive ---------- */
@media (max-width:1280px){
  .nav-search{width:170px;}
  .nav-menu a{padding:0 9px;font-size:14px;}
}
@media (max-width:1024px){
  .nav-menu,.nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-actions .nav-text-btn{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero{padding-top:112px;}
  .hero-visual img{aspect-ratio:16/10;}
  .hero-float{position:static;width:100%;margin-top:18px;box-shadow:var(--shadow-1);}
  .pain-grid{grid-template-columns:1fr;gap:36px;}
  .pain-item:nth-child(2){transform:none;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:32px 0;}
  .stat:nth-child(3){border-left:0;padding-left:0;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .faq-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .split{grid-template-columns:1fr;gap:28px;padding:36px 0;}
  .split--reverse .split-media{order:0;}
  .hero-cta .btn{flex:1 1 auto;}
  .news-grid{grid-template-columns:1fr;}
  .stats-grid{grid-template-columns:1fr;}
  .stat{border-left:0;padding-left:0;border-top:1px solid rgba(255,255,255,.12);padding-top:24px;}
  .stat:first-child{border-top:0;padding-top:0;}
  .section-head{flex-direction:column;align-items:flex-start;}
  .testi-card{flex:0 0 300px;}
  .testi-track{padding-left:18px;padding-right:18px;margin:0 -18px;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (max-width:520px){
  .logo-text{font-size:14.5px;}
  .hero h1{font-size:30px;}
  .hero-metrics{gap:24px;}
  .hero-metrics div strong{font-size:22px;}
  .btn{padding:13px 20px;font-size:14.5px;}
  .news-body{padding:18px;}
  .faq-q{font-size:15.5px;padding:18px;}
  .footer-bottom{justify-content:flex-start;}
}

/* roulang page: category1 */
:root{
  --brand:#FF6B1A;
  --brand-deep:#D9540A;
  --brand-soft:#FFF1E7;
  --accent:#17C3A2;
  --accent-soft:#E6F9F4;
  --paper:#FBF9F6;
  --card:#FFFFFF;
  --dark:#14161A;
  --ink-900:#14161A;
  --ink-700:#3A3F45;
  --ink-400:#8A9099;
  --line:#E7E4DF;
  --danger:#D93A2B;
  --container:1200px;
  --read:760px;
  --r-card:16px;
  --r-sm:12px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(20,22,26,.06);
  --shadow-2:0 16px 40px -20px rgba(20,22,26,.18);
  --section-y:clamp(64px,9vw,128px);
  --gap:24px;
  --font:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Inter","Manrope",-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:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--paper);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
::selection{background:var(--brand-soft);color:var(--brand-deep);}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:var(--section-y) 0;}
.section--tight{padding:clamp(48px,6vw,88px) 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.06em;
  color:var(--brand);background:var(--brand-soft);
  padding:7px 14px;border-radius:var(--r-pill);
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);}
.section-head{max-width:720px;margin-bottom:clamp(32px,4vw,56px);}
.section-head h2{font-size:clamp(26px,3.4vw,44px);font-weight:800;line-height:1.15;}
.section-head p{margin-top:14px;font-size:17px;color:var(--ink-700);}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(251,249,246,.92);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 24px -20px rgba(20,22,26,.35);}
.nav-inner{display:flex;align-items:center;gap:20px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:36px;height:36px;border-radius:11px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#fff;font-weight:800;font-size:18px;
  box-shadow:0 6px 16px -8px rgba(217,84,10,.7);
}
.logo-text{font-size:16px;font-weight:800;color:var(--ink-900);white-space:nowrap;letter-spacing:-.01em;}
.nav-menu{display:flex;align-items:center;gap:2px;}
.nav-menu a{
  position:relative;display:block;
  padding:9px 13px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--ink-700);
  transition:color .2s ease,background-color .2s ease;
}
.nav-menu a:hover{color:var(--ink-900);background:var(--brand-soft);}
.nav-menu a.is-active{color:var(--ink-900);font-weight:700;}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;
  height:2px;border-radius:2px;background:var(--brand);
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.nav-search{
  display:inline-flex;align-items:center;gap:8px;
  height:40px;width:216px;padding:0 14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);
  color:var(--ink-400);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,107,26,.15);}
.nav-search input{
  border:0;outline:0;background:transparent;width:100%;
  font-size:14px;color:var(--ink-900);
}
.nav-search input::placeholder{color:var(--ink-400);}
.nav-text-btn{font-size:15px;font-weight:500;color:var(--ink-700);padding:8px 6px;transition:color .2s ease;}
.nav-text-btn:hover{color:var(--brand);text-decoration:underline;text-underline-offset:6px;text-decoration-thickness:2px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  background:#fff;border-radius:12px;cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;position:relative;transition:background .2s ease;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);border-radius:2px;
  transition:transform .25s ease;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
body.nav-open .nav-toggle span{background:transparent;}
body.nav-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg);}
body.nav-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg);}
.nav-mobile-extra{display:none;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1.5px solid transparent;border-radius:var(--r-pill);
  padding:13px 26px;font-size:15px;font-weight:700;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px -12px rgba(217,84,10,.9);}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--ink-900);color:var(--ink-900);}
.btn-ghost:hover{background:var(--ink-900);color:#fff;transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--ink-900);}
.btn-light:hover{background:var(--brand-soft);color:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-sm{padding:9px 17px;font-size:13.5px;}
.btn-block{width:100%;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:700;color:var(--brand-deep);
  border-bottom:2px solid var(--brand);padding-bottom:2px;
  transition:color .2s ease,border-color .2s ease;
}
.text-link:hover{color:var(--brand-deep);border-color:var(--brand-deep);}

/* ---------- breadcrumb ---------- */
.breadcrumb-bar{padding:20px 0 0;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;color:var(--ink-400);}
.breadcrumb a{color:var(--ink-400);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb [aria-current]{color:var(--ink-700);font-weight:600;}

/* ---------- page hero ---------- */
.page-hero{padding:28px 0 clamp(48px,6vw,80px);}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,4vw,56px);align-items:center;}
.page-hero h1{
  margin-top:20px;
  font-size:clamp(32px,4.6vw,58px);
  font-weight:800;line-height:1.08;letter-spacing:-.02em;
}
.hero-lead{margin-top:20px;font-size:18px;line-height:1.85;color:var(--ink-700);max-width:600px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:32px;margin-top:40px;padding-top:28px;border-top:1px solid var(--line);}
.hero-stat strong{display:block;font-size:clamp(24px,2.6vw,34px);font-weight:800;color:var(--ink-900);line-height:1.1;}
.hero-stat span{display:block;margin-top:6px;font-size:13px;color:var(--ink-400);letter-spacing:.04em;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:20px;box-shadow:var(--shadow-2);
}
.hero-float{
  position:absolute;left:24px;bottom:-24px;right:auto;
  width:min(300px,86%);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 20px;box-shadow:var(--shadow-2);
}
.hero-float .hf-top{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-400);}
.hero-float .hf-title{margin-top:8px;font-size:16px;font-weight:800;color:var(--ink-900);}
.hero-float .hf-bar{margin-top:14px;height:8px;border-radius:var(--r-pill);background:var(--brand-soft);overflow:hidden;}
.hero-float .hf-bar i{display:block;height:100%;width:66%;border-radius:var(--r-pill);background:linear-gradient(135deg,var(--brand),var(--brand-deep));}
.badge-live{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--accent-soft);color:#0E8A72;
  font-size:12px;font-weight:700;padding:4px 10px;border-radius:var(--r-pill);letter-spacing:.04em;
}
.badge-live::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}

/* ---------- timeline ---------- */
.timeline{position:relative;display:grid;gap:8px;}
.step{position:relative;display:grid;grid-template-columns:56px 1fr;gap:22px;padding-bottom:26px;}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:27px;top:56px;bottom:0;width:2px;
  background:linear-gradient(180deg,var(--line),rgba(231,228,223,.35));
}
.step:last-child::before{display:none;}
.step-num{
  width:56px;height:56px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);border:2px solid var(--brand);
  color:var(--brand-deep);font-size:18px;font-weight:800;
  position:relative;z-index:1;
  transition:background-color .25s ease,color .25s ease,transform .25s ease;
}
.step-body{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.step-body:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#F5D9C6;}
.step-body:hover ~ .step-num{color:#fff;}
.step h3{font-size:21px;font-weight:700;line-height:1.35;}
.step p{margin-top:10px;font-size:16px;color:var(--ink-700);}
.step-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;letter-spacing:.03em;
  padding:5px 12px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand-deep);
}
.tag--accent{background:var(--accent-soft);color:#0E8A72;}
.tag--line{background:#fff;border:1px solid var(--line);color:var(--ink-400);}

/* ---------- dark prep block ---------- */
.dark-block{background:var(--dark);color:rgba(255,255,255,.72);border-radius:24px;padding:clamp(32px,5vw,64px);}
.dark-block .eyebrow{background:rgba(255,107,26,.14);color:#FFB07A;}
.dark-block h2{color:#fff;font-size:clamp(26px,3.4vw,42px);font-weight:800;line-height:1.15;margin-top:20px;}
.dark-block .lead{margin-top:16px;font-size:17px;max-width:680px;}
.prep-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:44px;}
.prep-card{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-card);padding:24px;
  transition:background-color .25s ease,transform .25s ease,border-color .25s ease;
}
.prep-card:hover{background:rgba(255,255,255,.08);transform:translateY(-2px);border-color:rgba(255,107,26,.45);}
.prep-card .pc-idx{font-size:13px;font-weight:700;letter-spacing:.12em;color:#FFB07A;}
.prep-card h3{color:#fff;font-size:19px;font-weight:700;margin-top:12px;}
.prep-card p{margin-top:10px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.68);}

/* ---------- alternating detail ---------- */
.detail-row{
  display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,72px);align-items:center;
  padding:clamp(32px,4vw,56px) 0;border-top:1px solid var(--line);
}
.detail-row:first-of-type{border-top:0;padding-top:0;}
.detail-row.reverse .detail-text{order:2;}
.detail-text h3{font-size:clamp(22px,2.4vw,30px);font-weight:800;line-height:1.25;}
.detail-text p{margin-top:14px;font-size:16.5px;line-height:1.9;}
.detail-list{margin-top:20px;display:grid;gap:12px;}
.detail-list li{position:relative;padding-left:26px;font-size:15.5px;line-height:1.8;}
.detail-list li::before{
  content:"";position:absolute;left:0;top:10px;width:10px;height:10px;border-radius:3px;
  background:var(--brand-soft);border:2px solid var(--brand);
}
.detail-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card);
  box-shadow:var(--shadow-2);border:1px solid var(--line);
}

/* ---------- pitfall list ---------- */
.pit-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.pit-card{
  display:flex;gap:18px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:24px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.pit-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#F5D9C6;}
.pit-icon{
  width:44px;height:44px;flex-shrink:0;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand-deep);font-weight:800;font-size:16px;
}
.pit-card h3{font-size:18px;font-weight:700;}
.pit-card p{margin-top:8px;font-size:15px;line-height:1.8;color:var(--ink-700);}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:6px 22px;transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item:hover{box-shadow:var(--shadow-1);}
.faq-item[open]{border-color:var(--brand);box-shadow:var(--shadow-2);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;font-size:17px;font-weight:700;color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex-shrink:0;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand-deep);
  font-size:17px;font-weight:700;line-height:1;
  transition:transform .25s ease,background-color .25s ease,color .25s ease;
}
.faq-item[open] summary::after{content:"−";background:var(--brand);color:#fff;}
.faq-item .faq-body{padding:0 0 20px;font-size:15.5px;line-height:1.9;color:var(--ink-700);}

/* ---------- CTA ---------- */
.cta-block{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  border-radius:24px;padding:clamp(40px,6vw,80px) clamp(24px,5vw,64px);
  text-align:center;color:#fff;
}
.cta-block h2{color:#fff;font-size:clamp(26px,3.4vw,44px);font-weight:800;line-height:1.15;}
.cta-block p{margin:18px auto 0;max-width:640px;font-size:17px;color:rgba(255,255,255,.9);}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:32px;}
.cta-note{margin-top:20px;font-size:13.5px;color:rgba(255,255,255,.82);}
.cta-note a{border-bottom:1.5px solid rgba(255,255,255,.7);padding-bottom:1px;}
.cta-note a:hover{border-color:#fff;}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.62);margin-top:clamp(64px,9vw,128px);padding:clamp(48px,7vw,80px) 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{margin-top:18px;font-size:14.5px;line-height:1.9;max-width:340px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;letter-spacing:.02em;}
.footer-col ul{margin-top:16px;display:grid;gap:10px;}
.footer-col a{font-size:14.5px;transition:color .2s ease;}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-contact li{display:flex;gap:8px;font-size:14.5px;}
.footer-contact span:first-child{color:rgba(255,255,255,.45);flex-shrink:0;}
.footer-bottom{
  margin-top:clamp(40px,5vw,64px);padding:22px 0;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13.5px;color:rgba(255,255,255,.5);
}
.to-top{transition:color .2s ease;}
.to-top:hover{color:#fff;}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);}
.reveal.is-visible{opacity:1;transform:none;transition:opacity .6s cubic-bezier(.22,.61,.36,1),transform .6s cubic-bezier(.22,.61,.36,1);}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .nav-search{display:none;}
}
@media (max-width:980px){
  .nav-menu{
    position:fixed;top:72px;left:0;right:0;bottom:0;
    background:var(--paper);flex-direction:column;align-items:stretch;
    gap:4px;padding:20px 24px 40px;overflow-y:auto;display:none;
  }
  body.nav-open .nav-menu{display:flex;}
  .nav-menu a{font-size:19px;padding:15px 12px;border-bottom:1px solid var(--line);border-radius:0;}
  .nav-menu a.is-active::after{display:none;}
  .nav-menu a.is-active{color:var(--brand-deep);}
  .nav-toggle{display:inline-flex;}
  .nav-text-btn,.nav-actions .btn{display:none;}
  .nav-mobile-extra{display:block;margin-top:24px;}
  .nav-mobile-extra .nav-search{display:flex;width:100%;margin-bottom:16px;}
  .nav-mobile-extra .btn{margin-top:10px;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-visual{order:-1;}
  .hero-float{position:static;width:100%;margin-top:16px;left:auto;bottom:auto;}
  .prep-grid{grid-template-columns:1fr;}
  .detail-row{grid-template-columns:1fr;}
  .detail-row.reverse .detail-text{order:0;}
  .pit-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:640px){
  .container{padding:0 18px;}
  .logo-text{font-size:14px;}
  .logo-mark{width:32px;height:32px;font-size:16px;border-radius:9px;}
  .page-hero h1{font-size:clamp(28px,8vw,38px);}
  .hero-lead{font-size:16.5px;}
  .hero-stats{gap:22px;}
  .hero-stat strong{font-size:24px;}
  .step{grid-template-columns:44px 1fr;gap:14px;}
  .step-num{width:44px;height:44px;font-size:16px;}
  .step::before{left:21px;top:44px;}
  .step-body{padding:20px;}
  .step h3{font-size:18.5px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-actions .btn{width:100%;}
}
@media (max-width:420px){
  .nav-inner{gap:12px;}
  .hero-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
}

/* roulang page: article */
:root{
  --brand:#FF6B1A;
  --brand-deep:#D9540A;
  --brand-soft:#FFF1E7;
  --accent:#17C3A2;
  --accent-soft:#E6F9F4;
  --paper:#FBF9F6;
  --card:#FFFFFF;
  --dark:#14161A;
  --ink-900:#14161A;
  --ink-700:#3A3F45;
  --ink-400:#8A9099;
  --line:#E7E4DF;
  --danger:#D93A2B;
  --r-card:16px;
  --r-input:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,22,26,.06);
  --sh-2:0 16px 40px -20px rgba(20,22,26,.18);
  --container:1200px;
  --sec:clamp(56px,8vw,104px);
  --font:"HarmonyOS Sans","PingFang SC","Microsoft YaHei",Inter,Manrope,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding-top:72px;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--paper);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:800;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:var(--brand-soft);color:var(--brand-deep);}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:8px;}
.skip-link{position:absolute;left:-9999px;top:0;z-index:200;background:var(--dark);color:#fff;padding:10px 16px;border-radius:0 0 12px 0;}
.skip-link:focus{left:0;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);
  padding:14px 26px;
  font-size:15px;font-weight:700;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--ink-900);border-color:var(--ink-900);}
.btn-ghost:hover{background:var(--ink-900);color:#fff;}
.btn-light{background:#fff;color:var(--ink-900);}
.btn-light:hover{background:var(--brand-soft);color:var(--brand-deep);transform:translateY(-1px);}
.btn-sm{padding:10px 18px;font-size:14px;}
.text-link{
  display:inline-block;font-weight:700;color:var(--ink-900);
  border-bottom:2px solid var(--brand);padding-bottom:2px;
  transition:color .2s ease,border-color .2s ease;
}
.text-link:hover{color:var(--brand-deep);border-color:var(--brand-deep);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;height:72px;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-1);}
.nav-inner{display:flex;align-items:center;gap:20px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;border-radius:11px;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#fff;font-size:17px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
  letter-spacing:0;
}
.logo-text{font-size:16px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em;}
.nav-menu{display:flex;align-items:center;gap:22px;margin-left:12px;}
.nav-menu a{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-700);
  padding:6px 0;transition:color .2s ease;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-menu a:hover{color:var(--brand-deep);}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.is-active{color:var(--ink-900);font-weight:700;}
.nav-menu a.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:200px;height:40px;padding:0 14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);
  color:var(--ink-400);transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search input{border:0;background:transparent;width:100%;font-size:14px;outline:none;}
.nav-search input::placeholder{color:var(--ink-400);}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,107,26,.15);}
.nav-text-btn{font-size:14px;font-weight:600;color:var(--ink-700);transition:color .2s ease;}
.nav-text-btn:hover{color:var(--brand-deep);}
.nav-toggle{display:none;position:relative;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-input);background:#fff;cursor:pointer;}
.nav-toggle span{position:absolute;top:50%;left:50%;width:18px;height:2px;margin:-1px 0 0 -9px;background:var(--ink-900);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-900);border-radius:2px;transition:transform .2s ease,top .2s ease;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.site-header.nav-open .nav-toggle span{background:transparent;}
.site-header.nav-open .nav-toggle span::before{top:0;transform:rotate(45deg);}
.site-header.nav-open .nav-toggle span::after{top:0;transform:rotate(-45deg);}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  padding:clamp(28px,4vw,48px) 0 clamp(32px,4.5vw,56px);
  overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;top:-120px;right:-80px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,107,26,.14),rgba(255,107,26,0) 68%);
  pointer-events:none;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-400);
  margin-bottom:20px;position:relative;z-index:1;
}
.breadcrumb a{color:var(--ink-400);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--brand-deep);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--ink-700);max-width:640px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  color:var(--brand-deep);background:var(--brand-soft);
  padding:6px 14px;border-radius:var(--r-pill);margin-bottom:18px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);}
.article-hero h1{
  font-size:clamp(30px,4.4vw,54px);
  line-height:1.14;
  letter-spacing:-.02em;
  max-width:900px;
  position:relative;z-index:1;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:22px;font-size:13px;color:var(--ink-400);
  position:relative;z-index:1;
}
.badge{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand-deep);
  font-size:12px;font-weight:700;letter-spacing:.04em;
}
.badge-accent{background:var(--accent-soft);color:#0E8F78;}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--line);}

/* ---------- 正文 ---------- */
.article-section{padding:clamp(40px,5vw,72px) 0 0;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;}
@media (min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,760px) 280px;justify-content:center;gap:56px;align-items:start;}
}
.article-body{min-width:0;font-size:17.5px;line-height:1.9;color:var(--ink-700);}
.article-body h2{
  position:relative;font-size:clamp(22px,2.6vw,30px);line-height:1.3;
  margin:2.1em 0 .8em;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:4px;background:var(--brand);
}
.article-body h3{font-size:20px;line-height:1.4;margin:1.6em 0 .6em;}
.article-body h4{font-size:17px;line-height:1.5;margin:1.4em 0 .5em;color:var(--ink-900);}
.article-body p{margin:0 0 1.15em;}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:0;}
.article-body ul li,.article-body ol li{
  position:relative;padding-left:22px;margin-bottom:.55em;
}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--brand);opacity:.85;
}
.article-body ol{counter-reset:olc;}
.article-body ol li{counter-increment:olc;}
.article-body ol li::before{
  content:counter(olc);position:absolute;left:0;top:.28em;
  width:18px;height:18px;border-radius:50%;background:var(--brand-soft);color:var(--brand-deep);
  font-size:11px;font-weight:800;line-height:18px;text-align:center;
}
.article-body a{color:var(--brand-deep);font-weight:600;border-bottom:2px solid var(--brand);padding-bottom:1px;transition:border-color .2s ease;}
.article-body a:hover{border-color:var(--brand-deep);}
.article-body strong{color:var(--ink-900);font-weight:800;}
.article-body img{border-radius:12px;margin:1.6em 0 .7em;box-shadow:var(--sh-1);}
.article-body figure{margin:1.8em 0;}
.article-body figcaption{font-size:13px;color:var(--ink-400);text-align:center;line-height:1.6;}
.article-body blockquote{
  margin:1.7em 0;padding:18px 22px;
  background:var(--brand-soft);border-left:3px solid var(--brand);
  border-radius:0 12px 12px 0;color:var(--ink-900);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.7em 0;font-size:15px;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;
}
.article-body th,.article-body td{padding:12px 14px;border:1px solid var(--line);text-align:left;vertical-align:top;}
.article-body th{background:var(--brand-soft);color:var(--ink-900);font-weight:700;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0;}
.article-body code{background:#F3F1EE;border-radius:6px;padding:2px 6px;font-size:.9em;}

.article-foot{
  margin-top:48px;padding-top:28px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
}
.article-foot .note{font-size:13px;color:var(--ink-400);}
.empty-state{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:48px 28px;text-align:center;box-shadow:var(--sh-1);
}
.empty-state h2{font-size:22px;margin-bottom:10px;padding-left:0;}
.empty-state h2::before{display:none;}
.empty-state p{color:var(--ink-400);margin-bottom:22px;}

/* ---------- 侧栏 ---------- */
.article-aside{display:none;}
@media (min-width:1280px){
  .article-aside{display:block;position:sticky;top:96px;}
}
.aside-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);
}
.aside-card h3{font-size:14px;letter-spacing:.06em;color:var(--ink-400);font-weight:700;margin-bottom:14px;}
.toc-list li{margin-bottom:2px;}
.toc-list a{
  display:block;font-size:14px;line-height:1.6;color:var(--ink-700);
  padding:8px 10px;border-radius:10px;border-left:2px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.toc-list a:hover{background:var(--brand-soft);color:var(--brand-deep);border-left-color:var(--brand);}
.aside-cta{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.aside-cta .btn{width:100%;}

/* ---------- 相关推荐 ---------- */
.section{padding:var(--sec) 0;}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:38px;}
.section-head h2{font-size:clamp(24px,3.2vw,38px);line-height:1.18;letter-spacing:-.015em;}
.section-head p{margin-top:10px;font-size:16px;color:var(--ink-400);max-width:600px;line-height:1.75;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#DEDAD3;}
.post-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft);}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.22,.61,.36,1);}
.post-card:hover .post-thumb img{transform:scale(1.04);}
.post-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-body h3{font-size:18px;line-height:1.45;}
.post-body p{font-size:15px;line-height:1.75;color:var(--ink-400);}
.post-meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-400);}

/* ---------- CTA ---------- */
.cta-band{position:relative;background:var(--dark);color:#fff;overflow:hidden;}
.cta-band .cta-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;opacity:.26;
}
.cta-band .cta-inner{position:relative;z-index:1;padding:clamp(56px,8vw,104px) 0;text-align:center;}
.cta-band h2{color:#fff;font-size:clamp(26px,3.6vw,42px);line-height:1.2;letter-spacing:-.015em;}
.cta-band p{color:rgba(255,255,255,.72);margin:16px auto 30px;max-width:640px;font-size:16px;line-height:1.8;}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;}
.cta-actions .text-link{color:#fff;border-color:rgba(255,255,255,.6);}
.cta-actions .text-link:hover{color:#fff;border-color:#fff;}
.cta-links{margin-top:26px;display:flex;flex-wrap:wrap;justify-content:center;gap:20px;font-size:14px;}
.cta-links a{color:rgba(255,255,255,.7);transition:color .2s ease;}
.cta-links a:hover{color:#fff;text-decoration:underline;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.62);padding:clamp(48px,7vw,84px) 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.85;max-width:340px;color:rgba(255,255,255,.6);}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.62);transition:color .2s ease;}
.footer-col a:hover{color:#fff;text-decoration:underline;}
.footer-contact li{display:flex;gap:8px;font-size:14px;line-height:1.7;}
.footer-contact span:first-child{color:rgba(255,255,255,.42);flex-shrink:0;}
.footer-bottom{
  margin-top:clamp(36px,5vw,60px);padding:22px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.5);
}
.to-top{color:rgba(255,255,255,.7);transition:color .2s ease;}
.to-top:hover{color:#fff;}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s cubic-bezier(.22,.61,.36,1),transform .6s cubic-bezier(.22,.61,.36,1);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-search{width:170px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:860px){
  .nav-toggle{display:block;}
  .nav-menu{
    position:fixed;top:72px;left:0;right:0;height:calc(100vh - 72px);
    flex-direction:column;align-items:stretch;gap:4px;margin-left:0;
    background:#fff;border-top:1px solid var(--line);
    padding:20px 24px 32px;overflow-y:auto;
    transform:translateY(-10px);opacity:0;visibility:hidden;
    transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
  }
  .site-header.nav-open .nav-menu{transform:none;opacity:1;visibility:visible;}
  .nav-menu a{font-size:18px;font-weight:600;padding:14px 10px;border-radius:12px;}
  .nav-menu a::after{display:none;}
  .nav-menu a:hover{background:var(--brand-soft);}
  .nav-search,.nav-text-btn{display:none;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .section{padding:56px 0;}
  .article-body{font-size:17px;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .section-head{margin-bottom:28px;}
  .article-foot{flex-direction:column;align-items:flex-start;}
}
@media (max-width:640px){
  .container{padding:0 18px;}
  .nav-inner{gap:12px;}
  .logo-text{font-size:15px;}
  .nav-actions .btn-ghost{display:none;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .cta-actions .btn{width:100%;}
  .meta-row{gap:10px;font-size:12.5px;}
  .breadcrumb .current{white-space:normal;}
}
@media (max-width:480px){
  .logo-mark{width:30px;height:30px;border-radius:10px;font-size:15px;}
  .logo-text{font-size:14px;}
  .nav-actions .btn-sm{padding:9px 14px;font-size:13px;}
  .article-hero h1{font-size:clamp(26px,7.4vw,34px);}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
/* ===================== 设计变量 ===================== */
:root{
  --brand:#FF6B1A;
  --brand-deep:#D9540A;
  --brand-soft:#FFF1E7;
  --accent:#17C3A2;
  --accent-soft:#E6F9F4;
  --paper:#FBF9F6;
  --card:#FFFFFF;
  --dark:#14161A;
  --ink-900:#14161A;
  --ink-700:#3A3F45;
  --ink-400:#8A9099;
  --line:#E7E4DF;
  --danger:#D93A2B;
  --radius-card:16px;
  --radius-input:12px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(20,22,26,.06);
  --shadow-2:0 16px 40px -20px rgba(20,22,26,.18);
  --container:1200px;
  --header-h:72px;
  --font-cn:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  --font-num:"Inter","Manrope",var(--font-cn);
}

/* ===================== Reset / Base ===================== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding-top:var(--header-h);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:800;letter-spacing:-.015em;}
h1{font-size:clamp(34px,5.2vw,68px);line-height:1.06;letter-spacing:-.02em;}
h2{font-size:clamp(26px,3.4vw,44px);line-height:1.15;}
h3{font-size:20px;line-height:1.35;}
h4{font-size:17px;line-height:1.5;font-weight:700;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
::selection{background:var(--brand-soft);color:var(--brand-deep);}

/* ===================== 布局容器 ===================== */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:clamp(64px,9vw,128px) 0;}
.section--tight{padding:clamp(44px,6vw,72px) 0;}
.narrow{max-width:760px;margin:0 auto;}

/* ===================== 顶部导航 ===================== */
.site-header{
  position:fixed;top:0;left:0;right:0;height:var(--header-h);
  z-index:200;
  background:rgba(251,249,246,.92);
  backdrop-filter:saturate(180%) blur(10px);
  -webkit-backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.94);
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-1);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:var(--header-h);}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#fff;font-weight:800;font-size:17px;line-height:1;
  box-shadow:0 6px 14px -8px rgba(255,107,26,.9);
}
.logo-text{font-size:17px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em;white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-menu a{
  position:relative;display:inline-flex;align-items:center;height:40px;
  padding:0 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--ink-700);
  transition:color .2s ease,background .2s ease;
}
.nav-menu a:hover{color:var(--ink-900);background:rgba(20,22,26,.045);}
.nav-menu a.is-active{color:var(--ink-900);font-weight:700;}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--brand);
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-search{
  display:inline-flex;align-items:center;gap:8px;
  width:212px;height:40px;padding:0 14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-pill);
  color:var(--ink-400);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search input{
  flex:1;min-width:0;height:100%;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--ink-900);font-family:inherit;
}
.nav-search input::placeholder{color:var(--ink-400);}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,107,26,.15);}
.nav-text-btn{
  font-size:15px;font-weight:600;color:var(--ink-700);
  padding:8px 6px;border-radius:8px;transition:color .2s ease;
}
.nav-text-btn:hover{color:var(--brand-deep);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  align-items:center;justify-content:center;border:1px solid var(--line);background:#fff;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-900);
  transition:transform .25s ease;
}
.nav-toggle span::before{transform:translateY(-6px);}
.nav-toggle span::after{transform:translateY(4px);}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-pill);
  font-weight:700;font-size:15px;
  padding:14px 26px;
  transition:background .22s ease,color .22s ease,box-shadow .22s ease,transform .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px -14px rgba(255,107,26,.95);}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-1);}
.btn-ghost{background:transparent;color:var(--ink-900);border:1.5px solid var(--ink-900);}
.btn-ghost:hover{background:var(--ink-900);color:#fff;}
.btn-outline{background:#fff;color:var(--ink-900);border:1.5px solid var(--line);}
.btn-outline:hover{border-color:var(--ink-900);}
.btn-on-dark{background:#fff;color:var(--ink-900);}
.btn-on-dark:hover{background:var(--brand-soft);color:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-weight:700;color:var(--brand-deep);
  border-bottom:2px solid var(--brand);padding-bottom:2px;
  transition:gap .2s ease,color .2s ease;
}
.link-arrow:hover{gap:12px;color:var(--brand);}

/* ===================== 标签 / 徽章 ===================== */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.06em;
  color:var(--brand-deep);background:var(--brand-soft);
  padding:6px 14px;border-radius:var(--radius-pill);
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:700;letter-spacing:.04em;
  padding:4px 10px;border-radius:var(--radius-pill);
  background:var(--brand-soft);color:var(--brand-deep);
}
.badge--ok{background:var(--accent-soft);color:#0E8E76;}
.badge--muted{background:#F1EFEB;color:var(--ink-400);}

/* ===================== 面包屑 ===================== */
.breadcrumb{padding:22px 0 0;font-size:13px;color:var(--ink-400);}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:6px;}
.breadcrumb a{color:var(--ink-400);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--brand-deep);}
.breadcrumb .sep{color:#C9C5BF;}
.breadcrumb [aria-current]{color:var(--ink-900);font-weight:600;}

/* ===================== 页头 Hero ===================== */
.page-hero{padding:36px 0 clamp(48px,6vw,88px);}
.page-hero-grid{
  display:grid;grid-template-columns:7fr 5fr;gap:clamp(28px,4vw,56px);align-items:center;
}
.page-hero h1{margin:20px 0 18px;}
.page-hero h1 .hl{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.page-hero .lead{font-size:clamp(16px,1.5vw,19px);line-height:1.8;color:var(--ink-700);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-figure{position:relative;}
.hero-figure img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:20px;
  box-shadow:var(--shadow-2);
}
.hero-float{
  position:absolute;left:16px;right:16px;bottom:16px;
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(6px);
  border-radius:14px;padding:14px 16px;
  display:flex;align-items:center;gap:12px;
  box-shadow:var(--shadow-1);
}
.hero-float .dot{width:9px;height:9px;border-radius:50%;background:var(--accent);flex-shrink:0;box-shadow:0 0 0 4px var(--accent-soft);}
.hero-float .txt{font-size:13px;line-height:1.5;color:var(--ink-700);}
.hero-float .txt strong{display:block;color:var(--ink-900);font-size:14px;}

/* ===================== 区块标题 ===================== */
.sec-head{max-width:720px;margin-bottom:clamp(32px,4vw,56px);}
.sec-head h2{margin:16px 0 14px;}
.sec-head p{color:var(--ink-700);font-size:16px;}
.sec-head--row{
  max-width:none;display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;
}

/* ===================== 两栏对照 ===================== */
.compare-wrap{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;
}
.compare-grid{display:grid;grid-template-columns:1fr 1px 1fr;}
.compare-divider{background:var(--line);}
.compare-col{padding:clamp(24px,3vw,40px);}
.compare-col-head{display:flex;align-items:center;gap:12px;padding-bottom:20px;border-bottom:1px dashed var(--line);margin-bottom:22px;}
.compare-col-head .ico{
  width:44px;height:44px;border-radius:12px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand-deep);font-weight:800;font-size:15px;
}
.compare-col-head h3{font-size:19px;}
.compare-col-head span{display:block;font-size:13px;color:var(--ink-400);font-weight:500;}
.compare-item{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--line);}
.compare-item:last-child{border-bottom:0;padding-bottom:0;}
.compare-item .mk{
  width:22px;height:22px;border-radius:50%;flex-shrink:0;margin-top:6px;
  display:flex;align-items:center;justify-content:center;
  background:var(--accent-soft);color:#0E8E76;font-size:12px;font-weight:800;
}
.compare-item h4{font-size:15.5px;margin-bottom:4px;}
.compare-item p{font-size:14.5px;color:var(--ink-700);margin:0;line-height:1.75;}

/* ===================== 浏览器清单 ===================== */
.browser-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.browser-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  position:relative;overflow:hidden;
}
.browser-card::before{
  content:"";position:absolute;top:0;left:0;height:1px;width:0;background:var(--brand);
  transition:width .35s ease;
}
.browser-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#DCD8D1;}
.browser-card:hover::before{width:100%;}
.browser-card .top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;}
.browser-card h3{font-size:18px;}
.browser-card p{font-size:14.5px;color:var(--ink-700);}
.browser-card ul{margin-top:14px;padding-top:14px;border-top:1px solid var(--line);}
.browser-card li{
  position:relative;padding-left:18px;font-size:14px;color:var(--ink-700);margin-bottom:8px;line-height:1.7;
}
.browser-card li::before{
  content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--brand);
}
.browser-card li:last-child{margin-bottom:0;}

/* ===================== 适配步骤 ===================== */
.step-list{display:grid;gap:0;}
.step{
  display:grid;grid-template-columns:88px 1fr;gap:24px;
  padding:28px 0;border-bottom:1px solid var(--line);
}
.step:first-child{padding-top:0;}
.step:last-child{border-bottom:0;padding-bottom:0;}
.step-num{
  font-family:var(--font-num);font-size:clamp(28px,3.6vw,44px);font-weight:800;line-height:1;
  color:transparent;-webkit-text-stroke:1.5px var(--line);
  transition:-webkit-text-stroke-color .3s ease,color .3s ease;
  font-variant-numeric:tabular-nums;
}
.step:hover .step-num{-webkit-text-stroke-color:var(--brand);}
.step-body h3{margin-bottom:8px;}
.step-body p{font-size:15px;color:var(--ink-700);margin-bottom:10px;}
.step-tags{display:flex;flex-wrap:wrap;gap:8px;}

/* ===================== 显示差异对照表 ===================== */
.diff-table-wrap{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
}
.diff-table th,.diff-table td{
  padding:16px 20px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line);
}
.diff-table th{
  background:var(--brand-soft);color:var(--brand-deep);font-weight:700;font-size:13.5px;letter-spacing:.03em;
}
.diff-table tbody tr:last-child td{border-bottom:0;}
.diff-table tbody tr:hover{background:#FDFBF8;}
.diff-table td:first-child{font-weight:700;color:var(--ink-900);}
.table-scroll{overflow-x:auto;}

/* ===================== 双列图文卡 ===================== */
.media-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.media-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .25s ease,box-shadow .25s ease;
  display:flex;flex-direction:column;
}
.media-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.media-card figure{margin:0;overflow:hidden;}
.media-card img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s ease;}
.media-card:hover img{transform:scale(1.04);}
.media-body{padding:22px 24px 26px;}
.media-body h3{margin:12px 0 10px;}
.media-body p{font-size:15px;color:var(--ink-700);}

/* ===================== 要点清单 ===================== */
.point-list{display:grid;grid-template-columns:repeat(2,1fr);gap:18px 32px;}
.point{
  display:flex;gap:14px;padding:18px 20px;background:var(--card);
  border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-1);
  transition:border-color .25s ease,transform .25s ease;
}
.point:hover{border-color:#F3C4A6;transform:translateY(-2px);}
.point .idx{
  font-family:var(--font-num);font-size:15px;font-weight:800;color:var(--brand);
  flex-shrink:0;font-variant-numeric:tabular-nums;padding-top:1px;
}
.point h4{font-size:15.5px;margin-bottom:4px;}
.point p{font-size:14px;color:var(--ink-700);margin:0;line-height:1.7;}

/* ===================== FAQ ===================== */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease;
  align-self:start;
}
.faq-item[open]{border-color:var(--brand);box-shadow:var(--shadow-2);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:20px 22px;font-size:16px;font-weight:700;color:var(--ink-900);line-height:1.55;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .plus{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand-deep);font-size:16px;font-weight:700;
  transition:transform .25s ease,background .25s ease,color .25s ease;
}
.faq-item[open] summary .plus{transform:rotate(45deg);background:var(--brand);color:#fff;}
.faq-body{padding:0 22px 22px;font-size:15px;color:var(--ink-700);line-height:1.85;}
.faq-body p{margin:0 0 10px;}
.faq-body p:last-child{margin-bottom:0;}

/* ===================== 深色提示块 ===================== */
.dark-block{
  background:var(--dark);border-radius:24px;color:rgba(255,255,255,.72);
  padding:clamp(32px,4.5vw,60px);
}
.dark-block h2{color:#fff;margin-bottom:16px;}
.dark-block p{color:rgba(255,255,255,.72);font-size:15.5px;}
.dark-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:36px;
  border-top:1px solid rgba(255,255,255,.12);
}
.dark-stat{padding:24px 20px 0;border-left:1px solid rgba(255,255,255,.12);}
.dark-stat:first-child{border-left:0;padding-left:0;}
.dark-stat .num{
  font-family:var(--font-num);font-size:clamp(32px,4.4vw,52px);font-weight:800;color:#fff;
  line-height:1;font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.dark-stat .num small{font-size:.5em;font-weight:700;margin-left:2px;color:var(--brand);}
.dark-stat span{display:block;margin-top:10px;font-size:13.5px;color:rgba(255,255,255,.6);}

/* ===================== 底部 CTA ===================== */
.cta-band{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  border-radius:24px;padding:clamp(40px,6vw,76px) clamp(24px,4vw,64px);
  text-align:center;color:#fff;
}
.cta-band h2{color:#fff;margin-bottom:16px;}
.cta-band p{color:rgba(255,255,255,.9);font-size:16px;max-width:620px;margin:0 auto 30px;}
.cta-band .cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:16px;}
.cta-band .btn-on-dark{background:#fff;color:var(--brand-deep);}
.cta-band .btn-on-dark:hover{background:var(--dark);color:#fff;}
.cta-band .ghost-light{
  display:inline-flex;align-items:center;gap:6px;color:#fff;font-weight:700;
  border-bottom:2px solid rgba(255,255,255,.6);padding-bottom:2px;font-size:15px;
  transition:border-color .2s ease,gap .2s ease;
}
.cta-band .ghost-light:hover{border-color:#fff;gap:12px;}
.cta-note{margin-top:22px;font-size:13.5px;color:rgba(255,255,255,.78);}

/* ===================== 页脚 ===================== */
.site-footer{background:var(--dark);color:rgba(255,255,255,.62);margin-top:clamp(48px,6vw,96px);}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding:clamp(48px,6vw,80px) 0 40px;
}
.site-footer .logo-text{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);margin-top:18px;max-width:340px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;letter-spacing:.02em;}
.footer-col li{margin-bottom:11px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.62);transition:color .2s ease;}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-contact li{display:flex;gap:8px;font-size:14px;color:rgba(255,255,255,.62);line-height:1.8;}
.footer-contact li span:first-child{color:rgba(255,255,255,.42);flex-shrink:0;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 32px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.5);
}
.to-top{color:rgba(255,255,255,.7);font-weight:600;transition:color .2s ease;}
.to-top:hover{color:#fff;}

/* ===================== 入场动效 ===================== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s cubic-bezier(.22,.61,.36,1),transform .6s cubic-bezier(.22,.61,.36,1);}
.reveal.is-in{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
  .reveal{opacity:1;transform:none;}
}

/* ===================== 响应式 ===================== */
@media (max-width:1279px){
  .nav-search{width:180px;}
}
@media (max-width:1100px){
  .nav-menu a{padding:0 10px;font-size:14.5px;}
  .browser-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1024px){
  .page-hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-figure{order:-1;}
  .hero-figure img{aspect-ratio:16/9;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .dark-stats{grid-template-columns:repeat(2,1fr);}
  .dark-stat:nth-child(3){border-left:0;padding-left:0;border-top:1px solid rgba(255,255,255,.12);margin-top:24px;padding-top:24px;}
  .dark-stat:nth-child(4){border-top:1px solid rgba(255,255,255,.12);margin-top:24px;padding-top:24px;}
}
@media (max-width:900px){
  .nav-menu,.nav-search,.nav-text-btn,.nav-actions .btn-ghost{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-menu{
    position:fixed;top:var(--header-h);left:0;right:0;bottom:0;
    display:flex;flex-direction:column;align-items:stretch;gap:6px;
    background:#fff;padding:24px;margin:0;
    transform:translateX(100%);transition:transform .3s cubic-bezier(.22,.61,.36,1);
    overflow-y:auto;border-top:1px solid var(--line);
  }
  body.nav-open .nav-menu{display:flex;transform:translateX(0);}
  body.nav-open .nav-menu a{font-size:20px;font-weight:600;height:auto;padding:16px 12px;border-radius:12px;}
  body.nav-open .nav-menu a.is-active{background:var(--brand-soft);color:var(--brand-deep);}
  body.nav-open .nav-menu a.is-active::after{display:none;}
  .compare-grid{grid-template-columns:1fr;}
  .compare-divider{height:1px;width:auto;}
  .media-grid{grid-template-columns:1fr;}
  .point-list{grid-template-columns:1fr;}
}
@media (max-width:768px){
  body{padding-top:64px;}
  :root{--header-h:64px;}
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .browser-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;}
  .step{grid-template-columns:1fr;gap:10px;padding:22px 0;}
  .step-num{font-size:32px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:30px;}
  .diff-table th,.diff-table td{padding:13px 14px;font-size:13.5px;white-space:nowrap;}
  .hero-float{left:12px;right:12px;bottom:12px;padding:12px 14px;}
}
@media (max-width:520px){
  .page-hero{padding-top:20px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{flex:1 1 100%;}
  .cta-band .cta-actions .btn{flex:1 1 100%;}
  .dark-stats{grid-template-columns:1fr;}
  .dark-stat{border-left:0;padding-left:0;border-top:1px solid rgba(255,255,255,.12);margin-top:20px;padding-top:20px;}
  .dark-stat:first-child{margin-top:0;padding-top:0;border-top:0;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category3 */
/* ===== 设计变量 ===== */
:root{
  --brand:#FF6B1A;
  --brand-deep:#D9540A;
  --brand-soft:#FFF1E7;
  --accent:#17C3A2;
  --accent-soft:#E6F9F4;
  --paper:#FBF9F6;
  --card:#FFFFFF;
  --ink-900:#14161A;
  --ink-700:#3A3F45;
  --ink-400:#8A9099;
  --line:#E7E4DF;
  --danger:#D93A2B;
  --r-card:16px;
  --r-img:16px;
  --r-input:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,22,26,.06);
  --sh-2:0 16px 40px -20px rgba(20,22,26,.18);
  --sec-gap:clamp(64px,9vw,128px);
  --container:1200px;
  --header-h:72px;
}

/* ===== reset / base ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-900);
  font-family:"Inter","Manrope","HarmonyOS Sans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure{margin:0}
h1,h2,h3,h4{line-height:1.2;font-weight:800}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:var(--brand-soft);color:var(--brand-deep)}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.sec{padding:var(--sec-gap) 0}
.sec-tight{padding-top:clamp(40px,5vw,64px)}
.sec-head{max-width:760px;margin-bottom:clamp(28px,4vw,48px)}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head h2{font-size:clamp(26px,3.4vw,44px);letter-spacing:-.01em}
.sec-head p{margin-top:14px;color:var(--ink-700);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.06em;font-weight:600;
  color:var(--brand-deep);background:var(--brand-soft);
  padding:6px 14px;border-radius:var(--r-pill);margin-bottom:18px;
}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--brand);display:inline-block}
.eyebrow.green{color:#0E8C74;background:var(--accent-soft)}
.eyebrow.green i{background:var(--accent)}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);padding:14px 26px;font-size:15px;font-weight:700;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
  border:1.5px solid transparent;white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{border-color:var(--ink-900);color:var(--ink-900);background:transparent}
.btn-ghost:hover{background:var(--ink-900);color:#fff;transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-light{background:#fff;color:var(--ink-900)}
.btn-light:hover{background:#fff;color:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-sm{padding:10px 18px;font-size:14px}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--brand-deep);
  border-bottom:2px solid var(--brand);padding-bottom:2px;transition:gap .18s ease,color .18s ease;
}
.link-arrow:hover{gap:11px;color:var(--brand)}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;height:var(--header-h);
  background:rgba(251,249,246,.92);
  backdrop-filter:saturate(150%) blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(255,255,255,.94);box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;gap:20px;height:var(--header-h)}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;flex:none}
.logo-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#fff;font-size:17px;font-weight:800;line-height:1;
}
.logo-text{font-size:16px;letter-spacing:-.01em;color:var(--ink-900)}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1;min-width:0}
.nav-menu a{
  position:relative;padding:10px 12px;border-radius:10px;font-size:15px;font-weight:500;
  color:var(--ink-700);transition:color .18s ease,background-color .18s ease;white-space:nowrap;
}
.nav-menu a:hover{color:var(--ink-900);background:#F4F1EC}
.nav-menu a.is-active{color:var(--ink-900);font-weight:800}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--brand);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none}
.nav-search{
  display:flex;align-items:center;gap:8px;width:206px;height:40px;padding:0 14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);color:var(--ink-400);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,107,26,.15)}
.nav-search input{width:100%;border:0;outline:0;background:transparent;font-size:14px;color:var(--ink-900)}
.nav-search input::placeholder{color:var(--ink-400)}
.nav-text-btn{font-size:15px;font-weight:600;color:var(--ink-700);padding:8px 6px;border-radius:8px;transition:color .18s ease}
.nav-text-btn:hover{color:var(--brand-deep)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;
  position:relative;flex:none;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:50%;width:18px;height:2px;border-radius:2px;background:var(--ink-900);
  transform:translateX(-50%);transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{top:-6px;left:0;transform:none}
.nav-toggle span::after{top:6px;left:0;transform:none}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:rotate(45deg);top:0}
.nav-toggle[aria-expanded="true"] span::after{transform:rotate(-45deg);top:0}

/* ===== 面包屑 ===== */
.crumb{padding:22px 0 0;font-size:13px;color:var(--ink-400)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.crumb li{display:inline-flex;align-items:center;gap:6px}
.crumb li+li::before{content:"／";color:var(--ink-400)}
.crumb a{color:var(--ink-700);border-bottom:1px solid transparent;transition:color .18s ease,border-color .18s ease}
.crumb a:hover{color:var(--brand-deep);border-bottom-color:var(--brand)}
.crumb [aria-current="page"]{color:var(--ink-900);font-weight:600}

/* ===== 页头 Hero ===== */
.page-hero{position:relative;overflow:hidden;padding-bottom:clamp(32px,5vw,64px)}
.page-hero::after{
  content:"";position:absolute;top:-140px;right:-160px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,107,26,.14),rgba(255,107,26,0) 68%);pointer-events:none;
}
.hero-grid{
  display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
  padding-top:clamp(28px,4vw,48px);position:relative;z-index:1;
}
.hero-copy h1{font-size:clamp(34px,5.2vw,68px);line-height:1.06;letter-spacing:-.02em}
.hero-copy .lead{margin-top:18px;font-size:17px;color:var(--ink-700);max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-facts{display:flex;flex-wrap:wrap;gap:34px;margin-top:38px;padding-top:26px;border-top:1px solid var(--line)}
.hero-facts strong{display:block;font-size:clamp(26px,3vw,36px);font-weight:800;letter-spacing:-.02em}
.hero-facts span{font-size:13px;color:var(--ink-400);letter-spacing:.04em}
.hero-media{
  position:relative;border-radius:20px;overflow:hidden;box-shadow:var(--sh-2);
  aspect-ratio:16/11;background:#EFEAE3;
}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-badge{
  position:absolute;left:16px;right:16px;bottom:16px;display:flex;align-items:center;gap:12px;
  background:rgba(255,255,255,.94);border-radius:14px;padding:12px 14px;box-shadow:var(--sh-1);
}
.hero-badge .dot{width:9px;height:9px;border-radius:50%;background:var(--accent);flex:none;box-shadow:0 0 0 4px var(--accent-soft)}
.hero-badge b{display:block;font-size:14px}
.hero-badge small{display:block;font-size:12px;color:var(--ink-400)}
.hero-badge .tag{margin-left:auto;font-size:12px;font-weight:700;color:#0E8C74;background:var(--accent-soft);padding:4px 10px;border-radius:var(--r-pill);white-space:nowrap}

/* ===== 通用卡片 / 网格 ===== */
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}

.card{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  overflow:hidden;
}
.card::before{
  content:"";position:absolute;left:0;top:24px;bottom:24px;width:2px;border-radius:2px;background:var(--brand);
  transform:scaleY(0);transform-origin:top;transition:transform .25s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#DDD8D1}
.card:hover::before{transform:scaleY(1)}
.card h3{font-size:20px;margin-bottom:10px}
.card p{font-size:15px;color:var(--ink-700)}

.media-card{padding:0;display:flex;flex-direction:column}
.media-card .media{aspect-ratio:16/9;overflow:hidden;background:#EFEAE3}
.media-card .media img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.22,.61,.36,1)}
.media-card:hover .media img{transform:scale(1.04)}
.media-card .body{padding:24px}
.media-card .body h3{font-size:21px;margin-bottom:10px}
.media-card .body p{font-size:15px;color:var(--ink-700)}
.chip{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--brand-deep);
  background:var(--brand-soft);padding:4px 10px;border-radius:var(--r-pill);margin-bottom:12px;
}
.chip.green{color:#0E8C74;background:var(--accent-soft)}

/* ===== 清单 ===== */
.check-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 24px}
.check-item{
  display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:18px 20px;transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.check-item:hover{border-color:rgba(255,107,26,.45);box-shadow:var(--sh-1);transform:translateY(-2px)}
.check-item .tick{
  flex:none;width:26px;height:26px;border-radius:8px;background:var(--brand-soft);color:var(--brand-deep);
  display:grid;place-items:center;font-size:13px;font-weight:800;margin-top:2px;
}
.check-item b{display:block;font-size:16px;margin-bottom:2px}
.check-item span{font-size:14px;color:var(--ink-700)}

/* ===== 深色对照区 ===== */
.dark-band{background:var(--ink-900);color:#fff;border-radius:0}
.dark-band .sec-head h2{color:#fff}
.dark-band .sec-head p{color:rgba(255,255,255,.68)}
.dark-band .eyebrow{background:rgba(255,107,26,.18);color:#FFB183}
.cmp{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid rgba(255,255,255,.12);border-radius:var(--r-card);overflow:hidden}
.cmp-col{padding:clamp(24px,3vw,36px)}
.cmp-col+.cmp-col{border-left:1px solid rgba(255,255,255,.12)}
.cmp-col h3{font-size:20px;margin-bottom:18px;display:flex;align-items:center;gap:10px}
.cmp-col h3 em{font-style:normal;font-size:12px;font-weight:700;letter-spacing:.06em;padding:3px 10px;border-radius:var(--r-pill)}
.cmp-col.do h3 em{background:var(--accent-soft);color:#0E8C74}
.cmp-col.avoid h3 em{background:rgba(217,58,43,.16);color:#FF9B8F}
.cmp-col li{
  position:relative;padding:12px 0 12px 22px;font-size:15px;color:rgba(255,255,255,.8);
  border-bottom:1px dashed rgba(255,255,255,.12);
}
.cmp-col li:last-child{border-bottom:0}
.cmp-col li::before{content:"";position:absolute;left:0;top:20px;width:8px;height:8px;border-radius:2px;background:var(--accent)}
.cmp-col.avoid li::before{background:#FF9B8F}

/* ===== 步骤 ===== */
.steps{position:relative;padding-left:34px}
.steps::before{content:"";position:absolute;left:11px;top:8px;bottom:8px;width:2px;background:var(--line);border-radius:2px}
.step{position:relative;padding:0 0 30px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:-34px;top:6px;width:14px;height:14px;border-radius:50%;
  background:#fff;border:3px solid var(--brand);box-shadow:0 0 0 4px var(--brand-soft);
}
.step h3{font-size:19px;margin-bottom:8px}
.step p{font-size:15px;color:var(--ink-700)}
.step .tag{display:inline-block;font-size:12px;font-weight:700;color:var(--ink-400);letter-spacing:.06em;margin-bottom:6px}

/* ===== FAQ ===== */
.faq{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;height:max-content;
}
.faq-item.is-open{border-color:var(--brand);box-shadow:var(--sh-1)}
.faq-q{
  width:100%;display:flex;align-items:flex-start;gap:14px;text-align:left;
  padding:20px 22px;font-size:16px;font-weight:700;line-height:1.5;
}
.faq-q .sign{
  flex:none;margin-left:auto;width:24px;height:24px;border-radius:50%;background:var(--brand-soft);color:var(--brand-deep);
  display:grid;place-items:center;font-size:16px;font-weight:800;transition:transform .25s ease,background-color .25s ease,color .25s ease;
}
.faq-item.is-open .faq-q .sign{background:var(--brand);color:#fff;transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 22px 20px;font-size:15px;color:var(--ink-700)}

/* ===== CTA ===== */
.cta-band{background:linear-gradient(135deg,var(--brand),var(--brand-deep));color:#fff}
.cta-inner{padding:clamp(48px,7vw,88px) 0;text-align:center}
.cta-inner h2{font-size:clamp(26px,3.6vw,44px);color:#fff}
.cta-inner p{margin:16px auto 0;max-width:620px;color:rgba(255,255,255,.9);font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:30px}
.cta-note{margin-top:18px;font-size:13px;color:rgba(255,255,255,.82)}
.cta-note a{border-bottom:2px solid rgba(255,255,255,.7);padding-bottom:2px}
.cta-note a:hover{border-bottom-color:#fff;color:#fff}

/* ===== 页脚 ===== */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.62);padding:clamp(48px,6vw,72px) 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand .logo-text{color:#fff}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.9;max-width:340px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:700}
.footer-col li{margin-bottom:10px;font-size:14px}
.footer-col a{color:rgba(255,255,255,.62);transition:color .18s ease}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-contact li{display:flex;gap:8px;flex-wrap:wrap}
.footer-contact span:first-child{color:rgba(255,255,255,.42)}
.footer-bottom{
  margin-top:clamp(36px,5vw,56px);padding:20px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:13px;
}
.to-top{color:rgba(255,255,255,.62);transition:color .18s ease}
.to-top:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}

/* ===== 动效 ===== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s cubic-bezier(.22,.61,.36,1),transform .6s cubic-bezier(.22,.61,.36,1)}
.reveal.is-visible{opacity:1;transform:none}

/* ===== 响应式 ===== */
@media (max-width:1280px){
  .nav-search{width:180px}
  .nav-menu a{padding:10px 9px;font-size:14px}
}
@media (max-width:1024px){
  .nav-search{display:none}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-copy .lead{max-width:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .faq{grid-template-columns:1fr}
}
@media (max-width:880px){
  .nav-menu{
    position:fixed;left:0;right:0;top:var(--header-h);bottom:0;
    flex-direction:column;align-items:stretch;gap:6px;margin:0;
    background:#fff;padding:20px 24px 32px;overflow-y:auto;
    border-top:1px solid var(--line);
    transform:translateY(-12px);opacity:0;visibility:hidden;
    transition:opacity .22s ease,transform .22s ease,visibility .22s ease;
  }
  .nav-menu.is-open{opacity:1;visibility:visible;transform:none}
  .nav-menu a{padding:16px 12px;font-size:17px;border-radius:12px}
  .nav-menu a.is-active::after{left:12px;right:auto;width:22px;bottom:8px}
  .nav-toggle{display:block}
  .nav-inner{gap:12px}
  .logo-text{font-size:15px}
  .nav-text-btn{display:none}
}
@media (max-width:768px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .check-list{grid-template-columns:1fr}
  .cmp{grid-template-columns:1fr}
  .cmp-col+.cmp-col{border-left:0;border-top:1px solid rgba(255,255,255,.12)}
  .hero-facts{gap:24px}
  .hero-facts li{flex:1 1 40%}
  .btn{padding:13px 20px}
  .card{padding:20px}
  .media-card .body{padding:20px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .site-header{height:64px}
  :root{--header-h:64px}
  .hero-media{aspect-ratio:16/10}
  .hero-badge .tag{display:none}
}
@media (max-width:480px){
  .logo-mark{width:30px;height:30px;font-size:15px}
  .logo-text{font-size:14px}
  .btn-sm{padding:9px 14px;font-size:13px}
  .hero-actions .btn{flex:1 1 100%}
  .footer-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --brand:#FF6B1A;
  --brand-deep:#D9540A;
  --brand-soft:#FFF1E7;
  --accent:#17C3A2;
  --accent-soft:#E6F9F4;
  --paper:#FBF9F6;
  --card:#FFFFFF;
  --dark:#14161A;
  --ink-900:#14161A;
  --ink-700:#3A3F45;
  --ink-400:#8A9099;
  --line:#E7E4DF;
  --danger:#D93A2B;
  --radius-card:16px;
  --radius-input:12px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(20,22,26,.06);
  --shadow-2:0 16px 40px -20px rgba(20,22,26,.18);
  --container:1200px;
  --narrow:860px;
  --space-section:clamp(64px,9vw,128px);
  --font-sans:"Inter","Manrope","HarmonyOS Sans","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-900);
  background:var(--paper);
  font-feature-settings:"tnum";
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
input{font-family:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.2;letter-spacing:-0.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:var(--brand-soft);color:var(--brand-deep);}
: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 24px;}
.narrow{width:100%;max-width:var(--narrow);margin:0 auto;padding:0 24px;}

/* ---------- 顶栏导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(251,249,246,.94);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.94);
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-1);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#fff;font-weight:800;font-size:17px;
  display:flex;align-items:center;justify-content:center;
  letter-spacing:0;
}
.logo-text{font-size:16px;font-weight:800;letter-spacing:-0.02em;white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:2px;flex:1;min-width:0;}
.nav-menu a{
  position:relative;
  display:inline-block;
  padding:9px 12px;
  font-size:15px;font-weight:500;color:var(--ink-700);
  border-radius:10px;
  transition:color .2s ease,background .2s ease;
  white-space:nowrap;
}
.nav-menu a:hover{color:var(--ink-900);background:var(--brand-soft);}
.nav-menu a.is-active{color:var(--ink-900);font-weight:700;}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;
  height:2px;border-radius:2px;background:var(--brand);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:40px;width:210px;padding:0 14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-pill);
  color:var(--ink-400);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,107,26,.15);}
.nav-search input{
  flex:1;min-width:0;border:0;outline:none;background:transparent;
  font-size:14px;color:var(--ink-900);
}
.nav-search input::placeholder{color:var(--ink-400);}
.nav-text-btn{
  font-size:15px;font-weight:600;color:var(--ink-700);
  padding:8px 6px;border-radius:8px;
  transition:color .2s ease;
}
.nav-text-btn:hover{color:var(--brand);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:0;border-radius:var(--radius-pill);
  font-size:15px;font-weight:700;line-height:1;
  padding:14px 26px;
  text-decoration:none;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-1);}
.btn-ghost{background:transparent;color:var(--ink-900);border:1.5px solid var(--ink-900);}
.btn-ghost:hover{background:var(--ink-900);color:#fff;transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--ink-900);}
.btn-light:hover{background:var(--brand-soft);color:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-sm{padding:11px 18px;font-size:14px;}
.btn-lg{padding:16px 32px;font-size:16px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:700;color:var(--ink-900);
  border-bottom:2px solid var(--brand);padding-bottom:2px;
  transition:color .2s ease,gap .2s ease;
}
.link-arrow:hover{color:var(--brand-deep);gap:10px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  background:#fff;position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:50%;width:18px;height:2px;background:var(--ink-900);
  border-radius:2px;transform:translateX(-50%);transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.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%) translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{transform:translateX(-50%) translateY(-6px) rotate(-45deg);}

.nav-drawer{
  position:fixed;left:0;right:0;top:72px;bottom:0;
  background:#fff;padding:28px 24px 40px;
  overflow-y:auto;z-index:55;
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity .26s ease,transform .26s ease,visibility .26s ease;
  border-top:1px solid var(--line);
}
.nav-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.nav-drawer a.drawer-link{
  display:block;font-size:20px;font-weight:600;color:var(--ink-900);
  padding:14px 0;border-bottom:1px solid var(--line);
}
.nav-drawer a.drawer-link.is-active{color:var(--brand-deep);}
.drawer-actions{display:flex;flex-direction:column;gap:12px;margin-top:24px;}
.drawer-search{
  display:flex;align-items:center;gap:8px;height:46px;padding:0 16px;
  border:1px solid var(--line);border-radius:var(--radius-pill);color:var(--ink-400);
}
.drawer-search input{flex:1;border:0;outline:none;background:transparent;font-size:15px;}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:22px 0 0;}
.crumb{font-size:13px;color:var(--ink-400);letter-spacing:.02em;}
.crumb a{color:var(--ink-400);transition:color .2s ease;}
.crumb a:hover{color:var(--brand);}
.crumb .sep{margin:0 8px;color:var(--line);}
.crumb .current{color:var(--ink-700);font-weight:600;}

/* ---------- 页头 ---------- */
.page-head{padding:clamp(28px,4.6vw,52px) 0 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--brand-deep);
  background:var(--brand-soft);border-radius:var(--radius-pill);
  padding:7px 14px;margin-bottom:20px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);}
.page-head h1{
  font-size:clamp(30px,4.6vw,56px);
  font-weight:800;line-height:1.1;letter-spacing:-0.02em;
  max-width:16em;
}
.page-lede{
  margin-top:18px;font-size:17px;color:var(--ink-700);max-width:46em;
}
.page-meta{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;
}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--ink-700);
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-pill);
  padding:6px 14px;
}
.chip-accent{color:#0E8F77;background:var(--accent-soft);border-color:transparent;}
.page-figure{
  margin-top:clamp(28px,4vw,44px);
  border-radius:20px;overflow:hidden;
  box-shadow:var(--shadow-1);
  background:var(--brand-soft);
}
.page-figure img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
}

/* ---------- 通用板块 ---------- */
.section{padding-top:var(--space-section);}
.section-head{max-width:44em;margin-bottom:clamp(28px,4vw,44px);}
.section-head h2{
  font-size:clamp(24px,3vw,36px);
  font-weight:800;line-height:1.15;letter-spacing:-0.015em;
}
.section-head p{margin-top:14px;color:var(--ink-700);font-size:16.5px;}
.section-head.centered{margin-left:auto;margin-right:auto;text-align:center;}

/* ---------- 要点清单 ---------- */
.check-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:clamp(20px,3vw,32px);
  box-shadow:var(--shadow-1);
}
.check-list li{
  display:flex;gap:14px;
  padding:16px 0;
  border-bottom:1px solid var(--line);
}
.check-list li:first-child{padding-top:4px;}
.check-list li:last-child{border-bottom:0;padding-bottom:4px;}
.check-icon{
  flex-shrink:0;width:24px;height:24px;border-radius:8px;margin-top:4px;
  background:var(--brand-soft);color:var(--brand-deep);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;
}
.check-list strong{display:block;font-size:16.5px;font-weight:700;line-height:1.5;}
.check-list span.desc{display:block;font-size:14.5px;color:var(--ink-700);margin-top:4px;line-height:1.75;}

/* ---------- FAQ 手风琴 ---------- */
.faq-list{margin-top:8px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  margin-bottom:12px;overflow:hidden;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item.is-open{border-color:var(--brand);box-shadow:var(--shadow-1);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;justify-content:space-between;
  border:0;background:transparent;text-align:left;
  padding:20px 22px;
  font-size:16.5px;font-weight:700;color:var(--ink-900);line-height:1.5;
}
.faq-q:hover{color:var(--brand-deep);}
.faq-sign{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand-deep);
  display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;line-height:1;
  transition:background .25s ease,color .25s ease,transform .25s ease;
}
.faq-item.is-open .faq-sign{background:var(--brand);color:#fff;transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .38s cubic-bezier(.22,.61,.36,1);
}
.faq-a-inner{padding:0 22px 22px;font-size:15.5px;color:var(--ink-700);line-height:1.9;}
.faq-a-inner b{color:var(--ink-900);}

/* ---------- 处理顺序 ---------- */
.steps-layout{display:grid;grid-template-columns:7fr 5fr;gap:clamp(24px,4vw,56px);align-items:start;}
.step-list{position:relative;padding-left:30px;}
.step-list::before{
  content:"";position:absolute;left:9px;top:8px;bottom:12px;width:2px;
  background:linear-gradient(180deg,var(--brand),rgba(255,107,26,.12));
}
.step-item{position:relative;padding-bottom:30px;}
.step-item:last-child{padding-bottom:0;}
.step-item::before{
  content:"";position:absolute;left:-30px;top:7px;width:20px;height:20px;border-radius:50%;
  background:#fff;border:3px solid var(--brand);
}
.step-num{
  font-size:13px;font-weight:800;letter-spacing:.08em;color:var(--brand-deep);
  display:block;margin-bottom:4px;
}
.step-item h3{font-size:19px;font-weight:700;line-height:1.4;}
.step-item p{margin-top:8px;font-size:15px;color:var(--ink-700);line-height:1.8;}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
}
.side-card img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.side-card-body{padding:22px;}
.side-card-body h3{font-size:18px;font-weight:700;}
.side-card-body p{margin-top:10px;font-size:14.5px;color:var(--ink-700);line-height:1.8;}
.side-card-body ul{margin-top:14px;display:grid;gap:8px;}
.side-card-body li{
  display:flex;gap:8px;font-size:14px;color:var(--ink-700);
  padding-left:0;
}
.side-card-body li::before{content:"·";color:var(--brand);font-weight:800;}

/* ---------- 提示对照 ---------- */
.hint-list{display:grid;gap:12px;}
.hint-row{
  display:grid;grid-template-columns:minmax(180px,32%) 1fr;gap:18px;
  align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:18px 22px;
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.hint-row:hover{border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-1);}
.hint-tip{
  display:inline-flex;align-items:center;
  font-size:14px;font-weight:700;color:var(--brand-deep);
  background:var(--brand-soft);border-radius:8px;padding:6px 12px;
  justify-self:start;
}
.hint-row p{font-size:15px;color:var(--ink-700);line-height:1.8;}

/* ---------- 注意事项 ---------- */
.note-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.note-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.note-card:hover{border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.note-badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:700;letter-spacing:.06em;
  color:#0E8F77;background:var(--accent-soft);
  border-radius:var(--radius-pill);padding:5px 12px;margin-bottom:14px;
}
.note-card h3{font-size:18px;font-weight:700;line-height:1.45;}
.note-card p{margin-top:10px;font-size:14.5px;color:var(--ink-700);line-height:1.8;}

/* ---------- CTA ---------- */
.cta-section{padding-top:var(--space-section);}
.cta-block{
  background:var(--dark);color:#fff;
  border-radius:24px;
  padding:clamp(40px,6vw,76px) clamp(24px,4vw,64px);
  text-align:center;
}
.cta-block h2{
  font-size:clamp(24px,3.2vw,40px);
  font-weight:800;line-height:1.2;letter-spacing:-0.015em;
}
.cta-block p{
  margin:16px auto 0;max-width:38em;
  font-size:16px;color:rgba(255,255,255,.72);line-height:1.85;
}
.cta-actions{
  margin-top:30px;display:flex;flex-wrap:wrap;gap:14px;justify-content:center;
}
.cta-note{
  margin-top:22px;font-size:14px;color:rgba(255,255,255,.62);
}
.cta-note a{
  color:#fff;text-decoration:underline;text-decoration-color:var(--brand);
  text-decoration-thickness:2px;text-underline-offset:5px;
}
.cta-note a:hover{color:var(--brand);}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:var(--space-section);background:var(--dark);color:rgba(255,255,255,.62);}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:clamp(24px,4vw,48px);
  padding:clamp(48px,6vw,80px) 0 40px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.6);max-width:34em;}
.footer-col h4{
  font-size:14px;font-weight:700;letter-spacing:.06em;
  color:#fff;margin-bottom:16px;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{
  font-size:14.5px;color:rgba(255,255,255,.62);
  transition:color .2s ease;
}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-contact li{display:flex;gap:8px;font-size:14.5px;line-height:1.7;}
.footer-contact li span:first-child{color:rgba(255,255,255,.42);flex-shrink:0;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 30px;
  display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
  font-size:13.5px;color:rgba(255,255,255,.52);
}
.to-top{color:rgba(255,255,255,.72);transition:color .2s ease;}
.to-top:hover{color:var(--brand);}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s cubic-bezier(.22,.61,.36,1),transform .6s cubic-bezier(.22,.61,.36,1);}
.reveal.is-visible{opacity:1;transform:translateY(0);}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .nav-search{width:170px;}
}
@media (max-width:1080px){
  .nav-menu{gap:0;}
  .nav-menu a{padding:9px 10px;font-size:14.5px;}
  .nav-search{display:none;}
}
@media (max-width:960px){
  .nav-menu{display:none;}
  .nav-toggle{display:block;}
  .nav-actions .nav-text-btn,
  .nav-actions .btn-ghost{display:none;}
  .steps-layout{grid-template-columns:1fr;}
  .side-card img{aspect-ratio:16/9;}
}
@media (max-width:900px){
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:768px){
  body{font-size:15.5px;}
  .container,.narrow{padding:0 18px;}
  .section{padding-top:56px;}
  .note-grid{grid-template-columns:1fr;}
  .hint-row{grid-template-columns:1fr;gap:10px;}
  .page-head h1{font-size:clamp(26px,7vw,36px);}
  .page-lede{font-size:16px;}
  .cta-block{border-radius:18px;}
  .cta-actions .btn{width:100%;}
}
@media (max-width:520px){
  .logo-text{font-size:14.5px;max-width:150px;white-space:normal;line-height:1.25;}
  .footer-grid{grid-template-columns:1fr;}
  .check-list li{gap:12px;}
  .faq-q{padding:16px 16px;font-size:15.5px;gap:12px;}
  .faq-a-inner{padding:0 16px 18px;font-size:15px;}
  .hint-row{padding:16px;}
  .note-card{padding:20px;}
  .step-list{padding-left:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}