/* roulang page: index */
:root{
  --paper:#F7F5F0;
  --paper-2:#FFFFFF;
  --brand-900:#103C34;
  --brand-600:#1C6A57;
  --accent:#C8F45C;
  --accent-warm:#E4572E;
  --ink-900:#12171A;
  --ink-700:#3A4448;
  --ink-400:#8A9497;
  --block:#0E1512;
  --line:rgba(18,23,26,.08);
  --line-strong:rgba(18,23,26,.14);
  --line-dark:rgba(255,255,255,.12);
  --radius:6px;
  --shadow-1:0 1px 2px rgba(18,23,26,.04);
  --shadow-2:0 8px 24px rgba(18,23,26,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::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:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
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;font-family:"Noto Serif SC","Songti SC",serif;font-weight:700;letter-spacing:-.02em;line-height:1.2;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:var(--accent);color:var(--brand-900);}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

.container-x{width:100%;max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px;}
@media (min-width:768px){.container-x{padding-left:40px;padding-right:40px;}}
@media (min-width:1200px){.container-x{padding-left:48px;padding-right:48px;}}

.section{padding:40px 0;}
@media (min-width:768px){.section{padding:64px 0;}}
@media (min-width:1024px){.section{padding:96px 0;}}

.display-1{font-size:clamp(2.5rem,5.2vw,3.5rem);line-height:1.15;}
.title-2{font-size:clamp(1.75rem,3.2vw,2.125rem);line-height:1.25;}
.title-3{font-size:clamp(1.25rem,1.8vw,1.375rem);line-height:1.35;}
.lede{font-size:clamp(1rem,1.15vw,1.0625rem);color:var(--ink-700);line-height:1.8;}
.prose-narrow{max-width:720px;}
.eyebrow{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-400);font-family:Inter,sans-serif;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--paper);
  border-bottom:1px solid transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease),backdrop-filter .3s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,245,240,.88);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom-color:var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:24px;}
@media (max-width:1023px){.nav-inner{height:56px;}}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:26px;height:26px;border-radius:8px;
  background:var(--brand-900);
  position:relative;flex-shrink:0;
}
.brand-mark::after{
  content:"";position:absolute;inset:7px 7px 7px 7px;
  background:var(--accent);border-radius:2px;
}
.brand-text{font-family:"Noto Serif SC",serif;font-weight:900;font-size:18px;color:var(--brand-900);letter-spacing:-.01em;white-space:nowrap;}
.nav-links{display:none;align-items:center;gap:4px;}
@media (min-width:1024px){.nav-links{display:flex;}}
.nav-link{
  position:relative;padding:8px 12px;font-size:15px;color:var(--ink-700);
  border-radius:999px;transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--brand-900);background:rgba(16,60,52,.05);}
.nav-link.is-active{color:var(--brand-900);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:16px;height:2px;background:var(--accent);border-radius:2px;
}
.nav-right{display:flex;align-items:center;gap:10px;}
.nav-icon-btn{
  width:36px;height:36px;display:none;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);border-radius:999px;background:transparent;
  cursor:pointer;transition:border-color .2s var(--ease),background .2s var(--ease);
}
@media (min-width:1024px){.nav-icon-btn{display:inline-flex;}}
.nav-icon-btn:hover{border-color:var(--brand-600);background:#fff;}
.nav-search{display:none;align-items:center;}
@media (min-width:1024px){.nav-search.is-open{display:flex;}}
.nav-search input{
  width:180px;height:36px;padding:0 14px;border-radius:999px;
  border:1px solid var(--line-strong);background:#fff;font-size:14px;
}
.nav-search input:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 2px rgba(200,244,92,.9);}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border:1px solid var(--line-strong);border-radius:999px;background:transparent;cursor:pointer;
}
@media (min-width:1024px){.menu-toggle{display:none;}}

.drawer{
  position:fixed;inset:0;z-index:80;pointer-events:none;
}
.drawer-panel{
  position:absolute;top:0;right:0;height:100%;width:min(86vw,340px);
  background:var(--paper);border-left:1px solid var(--line);
  padding:24px;transform:translateX(102%);
  transition:transform .3s var(--ease);
  display:flex;flex-direction:column;gap:8px;overflow-y:auto;
  box-shadow:-12px 0 40px rgba(18,23,26,.12);
}
.drawer.is-open{pointer-events:auto;}
.drawer.is-open .drawer-panel{transform:translateX(0);}
.drawer-mask{position:absolute;inset:0;background:rgba(18,23,26,.35);opacity:0;transition:opacity .3s var(--ease);}
.drawer.is-open .drawer-mask{opacity:1;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer-link{padding:12px 4px;font-size:16px;border-bottom:1px solid var(--line);color:var(--ink-700);}
.drawer-link.is-active{color:var(--brand-900);font-weight:600;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 24px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.btn .arrow{transition:transform .24s var(--ease);}
.btn:hover .arrow{transform:translateX(4px);}
.btn-primary{background:var(--brand-900);color:#F2F1EC;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--brand-600);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--brand-900);border-color:var(--line-strong);}
.btn-ghost:hover{border-color:var(--brand-600);background:#fff;}
.btn-light{background:var(--accent);color:var(--brand-900);}
.btn-light:hover{background:#d6fb77;box-shadow:0 8px 24px rgba(200,244,92,.3);}
.btn:disabled{opacity:.4;cursor:not-allowed;}

/* ---------- hero ---------- */
.hero{padding-top:32px;padding-bottom:40px;position:relative;overflow:hidden;}
@media (min-width:768px){.hero{padding-top:48px;padding-bottom:64px;}}
@media (min-width:1024px){.hero{padding-top:56px;padding-bottom:88px;}}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:4px;border:1px solid var(--line-strong);
  background:#fff;font-size:13px;color:var(--brand-900);letter-spacing:.02em;
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);}
.hl{position:relative;display:inline-block;}
.hl::after{
  content:"";position:absolute;left:0;right:0;bottom:.08em;height:.22em;
  background:var(--accent);z-index:-1;border-radius:2px;
}
.hero h1{z-index:1;position:relative;}
.trust{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;font-size:13px;color:var(--ink-400);}
.trust li{display:flex;align-items:center;gap:14px;}
.trust li:not(:last-child)::after{content:"";width:1px;height:12px;background:var(--line-strong);}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:4/5;object-fit:cover;border-radius:var(--radius);
  border:1px solid var(--line);
}
@media (max-width:767px){.hero-media img{aspect-ratio:16/11;}}
.hero-index{
  position:absolute;top:16px;left:16px;
  padding:4px 10px;border-radius:4px;background:rgba(247,245,240,.92);
  border:1px solid var(--line-strong);font-family:Inter,sans-serif;font-size:12px;letter-spacing:.14em;
  color:var(--brand-900);
}
.float-card{
  position:absolute;bottom:-18px;left:-12px;width:216px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-2);padding:14px 16px;
}
@media (max-width:640px){.float-card{position:static;width:100%;margin-top:16px;bottom:auto;left:auto;}}
.float-card .fc-label{font-size:12px;color:var(--ink-400);letter-spacing:.08em;}
.float-card .fc-value{font-family:"Noto Serif SC",serif;font-size:20px;color:var(--brand-900);}
.fc-bar{height:4px;border-radius:999px;background:rgba(18,23,26,.08);margin-top:10px;overflow:hidden;}
.fc-bar span{display:block;height:100%;width:72%;background:var(--accent);border-radius:999px;}

/* ---------- value strip ---------- */
.strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.strip-grid{display:grid;grid-template-columns:1fr;gap:0;}
@media (min-width:768px){.strip-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.strip-grid{grid-template-columns:repeat(4,1fr);}}
.strip-item{padding:28px 24px 28px 0;border-bottom:1px solid var(--line);}
@media (min-width:768px){.strip-item{border-right:1px solid var(--line);padding-right:24px;}}
.strip-item:last-child{border-right:none;}
.strip-num{
  font-family:Inter,sans-serif;font-size:12px;letter-spacing:.18em;color:var(--brand-600);
}
.strip-item h3{margin-top:10px;font-size:19px;}
.strip-item p{margin-top:8px;font-size:14px;color:var(--ink-700);line-height:1.75;}

/* ---------- feature groups ---------- */
.feature-row{
  display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--line);
  transition:padding-left .24s var(--ease);
}
.feature-row:hover{padding-left:6px;}
.feature-row:last-child{border-bottom:none;}
.feature-ico{
  flex-shrink:0;width:38px;height:38px;border-radius:50%;
  border:1px solid var(--line-strong);display:flex;align-items:center;justify-content:center;
  color:var(--brand-600);background:#fff;
}
.feature-row h3{font-size:18px;}
.feature-row p{margin-top:6px;font-size:14.5px;color:var(--ink-700);}
.group-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow-1);
}
@media (min-width:768px){.group-panel{padding:32px;}}
.offset-top{margin-top:0;}
@media (min-width:1024px){.offset-top{margin-top:56px;}}

/* ---------- scenes ---------- */
.scene-media{
  overflow:hidden;border-radius:var(--radius);border:1px solid var(--line);
}
.scene-media img{width:100%;aspect-ratio:16/11;object-fit:cover;transition:transform .5s var(--ease);}
.scene-media:hover img{transform:scale(1.03);}
.scene-tag{
  display:inline-block;padding:4px 10px;border-radius:4px;
  background:rgba(16,60,52,.06);color:var(--brand-600);font-size:12px;letter-spacing:.06em;
}
.scene-list li{
  position:relative;padding-left:18px;font-size:14.5px;color:var(--ink-700);margin-top:8px;
}
.scene-list li::before{
  content:"";position:absolute;left:0;top:.7em;width:6px;height:6px;background:var(--accent);border-radius:1px;
}

/* ---------- dark proof ---------- */
.proof{background:var(--block);color:#F2F1EC;}
.proof .eyebrow{color:rgba(242,241,236,.55);}
.proof-quote{
  font-family:"Noto Serif SC",serif;font-size:clamp(1.375rem,2.4vw,1.875rem);
  line-height:1.55;letter-spacing:-.01em;color:#F2F1EC;
}
.proof-card{
  border:1px solid var(--line-dark);border-radius:var(--radius);
  padding:24px;background:rgba(255,255,255,.02);
  transition:border-color .24s var(--ease),background .24s var(--ease);
}
.proof-card:hover{border-color:rgba(200,244,92,.55);background:rgba(200,244,92,.04);}
.proof-card h3{color:#F2F1EC;font-size:18px;}
.proof-card p{color:rgba(242,241,236,.72);font-size:14.5px;margin-top:8px;}
.proof-meta{font-size:13px;color:rgba(242,241,236,.5);letter-spacing:.04em;}

/* ---------- plans ---------- */
.plan{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;display:flex;flex-direction:column;height:100%;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.plan:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.plan.is-featured{border:1px solid var(--accent);box-shadow:0 12px 32px rgba(16,60,52,.08);}
.plan-flag{
  display:inline-flex;align-items:center;padding:3px 10px;border-radius:4px;
  background:var(--accent);color:var(--brand-900);font-size:12px;font-weight:600;
}
.plan h3{font-size:20px;margin-top:14px;}
.plan .plan-price{font-family:"Noto Serif SC",serif;font-size:26px;color:var(--brand-900);margin-top:10px;}
.plan .plan-price small{font-family:"PingFang SC",sans-serif;font-size:13px;color:var(--ink-400);margin-left:6px;}
.plan ul{margin-top:18px;display:grid;gap:10px;}
.plan li{position:relative;padding-left:24px;font-size:14.5px;color:var(--ink-700);}
.plan li::before{
  content:"";position:absolute;left:0;top:.45em;width:14px;height:14px;border-radius:50%;
  background:rgba(200,244,92,.55);border:1px solid rgba(16,60,52,.2);
}
.plan .btn{margin-top:auto;justify-content:center;margin-top:24px;}
.price-note{font-size:13px;color:var(--ink-400);}
.warm-tag{color:var(--warm);font-size:12.5px;}

/* ---------- news ---------- */
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;height:100%;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.news-card:hover{transform:translateY(-2px);border-color:rgba(16,60,52,.2);box-shadow:var(--shadow-2);}
.news-cover{display:block;background:#EFEDE7;}
.news-cover img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.chip{
  display:inline-block;padding:3px 10px;border-radius:4px;font-size:12px;
  background:rgba(16,60,52,.06);color:var(--brand-600);width:fit-content;
}
.news-body h3{font-size:17px;line-height:1.45;}
.news-body h3 a{
  background-image:linear-gradient(var(--accent),var(--accent));
  background-repeat:no-repeat;background-size:0 2px;background-position:0 100%;
  transition:background-size .24s var(--ease),color .2s var(--ease);
}
.news-card:hover .news-body h3 a{background-size:100% 2px;color:var(--brand-600);}
.news-body p{
  font-size:14px;color:var(--ink-700);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-400);}
.news-meta .more{color:var(--brand-600);font-weight:600;}
.news-meta .more span{display:inline-block;transition:transform .24s var(--ease);}
.news-card:hover .news-meta .more span{transform:translateX(4px);}
.empty-state{
  border:1px dashed var(--line-strong);border-radius:var(--radius);
  padding:40px 24px;text-align:center;background:#fff;
}
.empty-state p{color:var(--ink-400);font-size:15px;}

/* ---------- FAQ ---------- */
details.faq{
  border-bottom:1px solid var(--line);
  padding:18px 0;
}
details.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  font-family:"Noto Serif SC",serif;font-size:18px;font-weight:700;line-height:1.5;color:var(--ink-900);
}
details.faq summary::-webkit-details-marker{display:none;}
details.faq summary .sign{
  flex-shrink:0;width:22px;height:22px;margin-top:4px;position:relative;
  transition:transform .24s var(--ease);
}
details.faq summary .sign::before,
details.faq summary .sign::after{
  content:"";position:absolute;background:var(--brand-600);border-radius:2px;
}
details.faq summary .sign::before{left:0;top:10px;width:22px;height:2px;}
details.faq summary .sign::after{left:10px;top:0;width:2px;height:22px;transition:opacity .24s var(--ease),transform .24s var(--ease);}
details.faq[open] summary .sign{transform:rotate(0deg);}
details.faq[open] summary .sign::after{opacity:0;transform:scaleY(.2);}
details.faq .faq-a{
  margin-top:12px;color:var(--ink-700);font-size:15px;line-height:1.8;max-width:640px;
}
details.faq summary:hover{color:var(--brand-600);}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--brand-900);color:#F2F1EC;border-radius:var(--radius);
  padding:40px 28px;display:flex;flex-direction:column;gap:20px;
  align-items:flex-start;
}
@media (min-width:768px){
  .cta-band{padding:48px;flex-direction:row;align-items:center;justify-content:space-between;}
}
.cta-band h2{font-size:clamp(1.5rem,2.6vw,1.875rem);color:#F2F1EC;}

/* ---------- footer ---------- */
.site-footer{background:var(--block);color:#F2F1EC;padding:56px 0 24px;margin-top:24px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;}}
.footer-title{font-size:13px;letter-spacing:.14em;color:rgba(242,241,236,.5);margin-bottom:14px;}
.footer-link{display:block;padding:6px 0;font-size:14.5px;color:rgba(242,241,236,.78);transition:color .2s var(--ease);}
.footer-link:hover{color:var(--accent);}
.footer-brand{font-family:"Noto Serif SC",serif;font-size:20px;color:#F2F1EC;}
.footer-desc{color:rgba(242,241,236,.65);font-size:14.5px;margin-top:12px;max-width:340px;}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(242,241,236,.5);
}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}
.reveal[data-d="1"]{transition-delay:.06s;}
.reveal[data-d="2"]{transition-delay:.12s;}
.reveal[data-d="3"]{transition-delay:.18s;}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;transition:opacity .2s linear;}
  .scene-media img,.btn,.news-card,.plan,.feature-row{transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --paper:#F7F5F0;
  --paper-2:#FFFFFF;
  --brand-900:#103C34;
  --brand-600:#1C6A57;
  --accent:#C8F45C;
  --accent-warm:#E4572E;
  --ink-900:#12171A;
  --ink-700:#3A4448;
  --ink-400:#8A9497;
  --ink-block:#0E1512;
  --line:rgba(18,23,26,.08);
  --line-strong:rgba(18,23,26,.16);
  --line-dark:rgba(255,255,255,.12);
  --radius:6px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(18,23,26,.04);
  --shadow-2:0 8px 24px rgba(18,23,26,.08);
  --serif:"Noto Serif SC","Songti SC",Songti,serif;
  --sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,sans-serif;
  --mono:"Inter",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-900);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
input{font-family:inherit;}
h1,h2,h3,h4{font-family:var(--serif);color:var(--brand-900);margin:0;letter-spacing:-.02em;}
p{margin:0;}
::selection{background:var(--accent);color:var(--brand-900);}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

.container-x{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
@media (min-width:768px){.container-x{padding:0 40px;}}
@media (min-width:1200px){.container-x{padding:0 48px;}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(247,245,240,.9);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{background:rgba(247,245,240,.96);box-shadow:0 6px 20px rgba(18,23,26,.06);}
.header-inner{display:flex;align-items:center;gap:22px;height:64px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{position:relative;width:30px;height:30px;border-radius:9px;background:var(--brand-900);flex:0 0 auto;}
.logo-mark::after{content:"";position:absolute;inset:8px 8px 8px 8px;background:var(--accent);border-radius:2px;}
.logo-mark::before{content:"";position:absolute;right:5px;bottom:5px;width:8px;height:8px;border-radius:2px;background:#F7F5F0;opacity:.9;}
.logo-text{font-family:var(--serif);font-weight:800;font-size:18px;color:var(--brand-900);letter-spacing:-.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:10px;}
.nav-link{position:relative;font-size:14.5px;color:var(--ink-700);padding:8px 0;transition:color .2s ease;}
.nav-link::after{content:"";position:absolute;left:0;bottom:2px;height:2px;width:0;background:var(--accent);transition:width .24s cubic-bezier(.2,.7,.3,1);}
.nav-link:hover{color:var(--brand-900);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--brand-900);font-weight:600;}
.nav-link.is-active::after{width:100%;}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:14px;}
.icon-btn{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);border-radius:var(--radius-pill);background:transparent;
  color:var(--brand-900);transition:border-color .2s ease,background .2s ease,transform .2s ease;
}
.icon-btn:hover{border-color:var(--brand-600);background:#fff;transform:translateY(-1px);}
.link-quiet{font-size:14.5px;color:var(--ink-700);transition:color .2s ease;}
.link-quiet:hover{color:var(--brand-600);}
.btn{
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
  border-radius:var(--radius-pill);font-size:14.5px;font-weight:600;
  padding:11px 22px;border:1px solid transparent;transition:all .22s cubic-bezier(.2,.7,.3,1);white-space:nowrap;
}
.btn .arw{transition:transform .22s cubic-bezier(.2,.7,.3,1);}
.btn:hover .arw{transform:translateX(4px);}
.btn-primary{background:var(--brand-900);color:#F4F3EE;}
.btn-primary:hover{background:var(--brand-600);box-shadow:var(--shadow-2);}
.btn-ghost{border-color:var(--line-strong);color:var(--brand-900);background:transparent;}
.btn-ghost:hover{border-color:var(--brand-900);background:#fff;box-shadow:var(--shadow-1);}
.btn-lime{background:var(--accent);color:var(--brand-900);border-color:var(--accent);}
.btn-lime:hover{filter:brightness(.95);box-shadow:var(--shadow-2);}
.btn-sm{padding:8px 16px;font-size:13.5px;}
.burger{display:none;}
.search-panel{display:none;padding:0 0 16px;}
.search-panel.is-open{display:block;}
.search-field{
  display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line-strong);
  border-radius:var(--radius);padding:10px 14px;
}
.search-field input{border:0;outline:0;flex:1;font-size:15px;color:var(--ink-900);background:transparent;}
.search-field:focus-within{border-color:var(--brand-600);box-shadow:0 0 0 2px rgba(200,244,92,.75);}

/* ---------- Drawer ---------- */
.drawer{
  position:fixed;top:0;right:0;height:100%;width:300px;max-width:86vw;background:var(--paper-2);
  border-left:1px solid var(--line);z-index:90;transform:translateX(102%);
  transition:transform .3s cubic-bezier(.2,.7,.3,1);padding:22px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-link{display:block;padding:13px 0;border-bottom:1px solid var(--line);font-size:15.5px;color:var(--ink-700);}
.drawer-link.is-active{color:var(--brand-900);font-weight:600;}
.scrim{position:fixed;inset:0;background:rgba(14,21,18,.42);z-index:80;opacity:0;pointer-events:none;transition:opacity .3s ease;}
.scrim.is-open{opacity:1;pointer-events:auto;}

/* ---------- Breadcrumb ---------- */
.crumb-bar{padding:22px 0 0;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);}
.crumb a{color:var(--ink-700);transition:color .2s ease;}
.crumb a:hover{color:var(--brand-600);}
.crumb .sep{color:var(--ink-400);}
.crumb .cur{color:var(--brand-900);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- Article head ---------- */
.article-head{padding:26px 0 0;}
.kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;
  color:var(--brand-600);border:1px solid var(--line-strong);border-radius:var(--radius);
  padding:5px 12px;background:#fff;
}
.kicker .dot{width:7px;height:7px;border-radius:2px;background:var(--accent);}
.page-title{
  font-size:clamp(30px,4.2vw,44px);line-height:1.2;font-weight:800;margin:18px 0 0;max-width:22ch;
}
@media (min-width:1024px){.page-title{max-width:26ch;}}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;
  font-size:13px;color:var(--ink-400);
}
.meta-row .pill{
  color:var(--brand-900);border:1px solid var(--line-strong);border-radius:var(--radius);
  padding:3px 10px;font-size:12px;background:#fff;
}
.meta-row .div{width:1px;height:12px;background:var(--line-strong);}
.rule{height:1px;background:var(--line);margin:26px 0 0;}
.article-cover{margin-top:28px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:#E9E6DE;}
.article-cover img{width:100%;aspect-ratio:21/9;object-fit:cover;}

/* ---------- Layout ---------- */
.layout{display:grid;grid-template-columns:1fr;gap:40px;padding:44px 0 0;}
@media (min-width:1024px){
  .layout{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:56px;padding:56px 0 0;}
}
.article-body{max-width:760px;font-size:16.5px;line-height:1.85;color:var(--ink-700);}
.article-body > * + *{margin-top:20px;}
.article-body h2{
  position:relative;font-size:clamp(22px,2.6vw,28px);line-height:1.35;color:var(--brand-900);
  padding-left:16px;margin-top:44px;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.25em;bottom:.2em;width:2px;background:var(--brand-900);border-radius:2px;}
.article-body h3{font-size:clamp(18px,2vw,21px);line-height:1.45;color:var(--brand-900);margin-top:32px;font-family:var(--sans);font-weight:700;letter-spacing:0;}
.article-body h4{font-size:17px;color:var(--brand-900);margin-top:24px;font-family:var(--sans);font-weight:700;letter-spacing:0;}
.article-body p{color:var(--ink-700);}
.article-body a{color:var(--brand-600);border-bottom:1px solid rgba(28,106,87,.28);transition:border-color .2s ease,color .2s ease;}
.article-body a:hover{color:var(--brand-900);border-color:var(--accent);}
.article-body strong{color:var(--ink-900);font-weight:700;}
.article-body ul,.article-body ol{padding-left:22px;margin-top:20px;}
.article-body li{margin-top:8px;}
.article-body ul li::marker{color:var(--accent);font-size:1.05em;}
.article-body ol li::marker{color:var(--brand-600);font-weight:700;}
.article-body blockquote{
  margin:28px 0;padding:18px 22px;background:#fff;border-left:3px solid var(--accent);
  border-radius:0 var(--radius) var(--radius) 0;color:var(--ink-900);font-size:16.5px;
}
.article-body blockquote p{color:var(--ink-900);}
.article-body img{border-radius:var(--radius);margin:26px 0 8px;width:100%;}
.article-body figure{margin:26px 0;}
.article-body figcaption{text-align:center;font-size:13px;color:var(--ink-400);margin-top:8px;}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:12px 14px;text-align:left;}
.article-body thead th{background:#F1EEE6;color:var(--brand-900);font-family:var(--sans);font-weight:700;font-size:14px;}
.article-body tbody tr:nth-child(even){background:#FAF9F5;}
.article-body hr{border:0;height:1px;background:var(--line);margin:36px 0;}
.article-body code{font-family:var(--mono);font-size:.94em;background:#F1EEE6;padding:2px 6px;border-radius:4px;color:var(--brand-900);}

/* ---------- Sidebar ---------- */
.sidebar{display:flex;flex-direction:column;gap:20px;}
@media (min-width:1024px){.sidebar{position:sticky;top:88px;align-self:start;}}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-1);}
.side-title{font-size:13px;letter-spacing:.12em;color:var(--ink-400);text-transform:uppercase;font-family:var(--sans);font-weight:700;margin-bottom:14px;}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-link{
  display:block;padding:7px 10px;font-size:14px;color:var(--ink-700);border-left:2px solid transparent;
  border-radius:0 var(--radius) var(--radius) 0;transition:all .2s ease;line-height:1.5;
}
.toc-link:hover{color:var(--brand-900);background:#F7F5F0;border-left-color:var(--accent);}
.toc-link.is-sub{padding-left:22px;font-size:13.5px;color:var(--ink-400);}
.side-rel{display:flex;flex-direction:column;gap:12px;}
.side-rel-item{display:flex;gap:12px;align-items:flex-start;padding:8px;border-radius:var(--radius);transition:background .2s ease;}
.side-rel-item:hover{background:#F7F5F0;}
.side-rel-thumb{width:62px;height:48px;border-radius:4px;object-fit:cover;flex:0 0 auto;background:#E9E6DE;}
.side-rel-t{font-size:14px;color:var(--ink-900);line-height:1.55;font-weight:600;}
.side-rel-item:hover .side-rel-t{color:var(--brand-600);}
.side-rel-m{font-size:12px;color:var(--ink-400);margin-top:4px;}
.side-back{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:14px;color:var(--brand-900);font-weight:600;}
.side-back:hover{color:var(--brand-600);}

/* ---------- Article foot ---------- */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:44px;padding-top:26px;border-top:1px solid var(--line);}
.tag-label{font-size:13px;color:var(--ink-400);}
.tag{
  display:inline-block;font-size:13px;color:var(--brand-900);background:#fff;
  border:1px solid var(--line-strong);border-radius:var(--radius);padding:5px 12px;transition:all .2s ease;
}
.tag:hover{border-color:var(--brand-600);background:#F1EEE6;}
.share-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:22px;}
.share-btn{
  display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-700);
  background:#fff;border:1px solid var(--line-strong);border-radius:var(--radius-pill);padding:8px 16px;
  transition:all .2s ease;
}
.share-btn:hover{color:var(--brand-900);border-color:var(--brand-600);transform:translateY(-1px);box-shadow:var(--shadow-1);}
.pn-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:40px;}
@media (min-width:640px){.pn-grid{grid-template-columns:1fr 1fr;}}
.pn-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;
  transition:all .24s cubic-bezier(.2,.7,.3,1);
}
.pn-card:hover{border-color:rgba(28,106,87,.32);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.pn-card .pn-label{font-size:12px;letter-spacing:.1em;color:var(--ink-400);}
.pn-card .pn-t{font-size:16px;font-weight:700;color:var(--brand-900);margin-top:8px;font-family:var(--sans);}
.pn-card .pn-d{font-size:13.5px;color:var(--ink-700);margin-top:6px;line-height:1.7;}
.pn-card:hover .pn-t{color:var(--brand-600);}

/* ---------- Sections ---------- */
.section{padding:64px 0 0;}
@media (min-width:1024px){.section{padding:88px 0 0;}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;}
.section-title{font-size:clamp(24px,3vw,32px);line-height:1.25;font-weight:800;}
.section-sub{font-size:14.5px;color:var(--ink-700);margin-top:10px;max-width:62ch;}
.more-link{font-size:14px;color:var(--brand-600);font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.more-link .arw{transition:transform .22s ease;}
.more-link:hover .arw{transform:translateX(4px);}

.rel-grid{display:grid;grid-template-columns:1fr;gap:22px;}
@media (min-width:640px){.rel-grid{grid-template-columns:1fr 1fr;}}
@media (min-width:1024px){.rel-grid{grid-template-columns:repeat(3,1fr);}}
.card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:all .26s cubic-bezier(.2,.7,.3,1);
}
.card:hover{border-color:rgba(28,106,87,.32);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.card-cover{position:relative;overflow:hidden;background:#E9E6DE;}
.card-cover img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s cubic-bezier(.2,.7,.3,1);}
.card:hover .card-cover img{transform:scale(1.03);}
.card-badge{
  position:absolute;left:12px;top:12px;background:var(--accent);color:var(--brand-900);
  font-size:12px;font-weight:700;border-radius:var(--radius);padding:4px 10px;
}
.card-body{padding:18px 20px 20px;}
.card-cat{font-size:12px;color:var(--brand-600);letter-spacing:.06em;}
.card-t{font-size:17px;font-weight:700;color:var(--brand-900);line-height:1.5;margin-top:8px;font-family:var(--sans);}
.card:hover .card-t{color:var(--brand-600);}
.card-d{font-size:14px;color:var(--ink-700);line-height:1.75;margin-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-m{display:flex;align-items:center;justify-content:space-between;margin-top:14px;font-size:12.5px;color:var(--ink-400);}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr;gap:0 48px;}
@media (min-width:900px){.faq-grid{grid-template-columns:1fr 1fr;}}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;background:transparent;
  border:0;text-align:left;padding:20px 0;font-size:17px;font-weight:700;color:var(--brand-900);line-height:1.55;
}
.faq-q:hover{color:var(--brand-600);}
.faq-sign{flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform .24s ease;color:var(--brand-900);}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:1px;transform:translate(-50%,-50%);}
.faq-sign::before{width:14px;height:2px;}
.faq-sign::after{width:2px;height:14px;transition:opacity .24s ease;}
.faq-item.is-open .faq-sign::after{opacity:0;}
.faq-item.is-open .faq-sign{transform:rotate(90deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s cubic-bezier(.2,.7,.3,1);}
.faq-a p{padding:0 0 20px;font-size:15px;color:var(--ink-700);line-height:1.85;max-width:62ch;}

/* ---------- CTA band ---------- */
.cta-band{
  margin-top:88px;background:var(--ink-block);color:#F2F1EC;border-radius:var(--radius);
  padding:44px 32px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
}
@media (min-width:768px){.cta-band{padding:52px 48px;}}
.cta-band h2{color:#F2F1EC;font-size:clamp(23px,2.8vw,30px);line-height:1.3;max-width:22ch;}
.cta-band p{color:rgba(242,241,236,.72);font-size:14.5px;margin-top:12px;max-width:46ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-band .btn-ghost{border-color:var(--line-dark);color:#F2F1EC;}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.08);border-color:#F2F1EC;}

/* ---------- Empty state ---------- */
.empty-state{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:48px 28px;text-align:center;
}
.empty-state h2{font-size:22px;}
.empty-state p{color:var(--ink-700);font-size:15px;margin-top:12px;}
.empty-state .btn{margin-top:22px;}

/* ---------- Footer ---------- */
.site-footer{margin-top:88px;background:var(--ink-block);color:#F2F1EC;padding:56px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px;}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}}
.footer-brand{font-family:var(--serif);font-size:20px;font-weight:800;color:#F2F1EC;}
.footer-desc{font-size:14px;color:rgba(242,241,236,.66);line-height:1.8;margin-top:12px;max-width:34ch;}
.footer-title{font-size:13px;letter-spacing:.12em;color:rgba(242,241,236,.5);margin-bottom:14px;}
.footer-link{display:block;font-size:14px;color:rgba(242,241,236,.78);padding:5px 0;transition:color .2s ease;}
.footer-link:hover{color:var(--accent);}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(242,241,236,.55);
}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .4s cubic-bezier(.2,.7,.3,1),transform .4s cubic-bezier(.2,.7,.3,1);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1 !important;transform:none !important;}
  html{scroll-behavior:auto;}
}

@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-actions .link-quiet{display:none;}
  .burger{display:inline-flex;}
}
@media (max-width:520px){
  .logo-text{font-size:16px;}
  .header-inner{height:56px;gap:12px;}
  .btn{padding:10px 18px;font-size:14px;}
  .cta-band{padding:34px 22px;}
}

/* roulang page: category1 */
:root{
  --paper:#F7F5F0;
  --paper-2:#FFFFFF;
  --brand-900:#103C34;
  --brand-600:#1C6A57;
  --accent:#C8F45C;
  --accent-warm:#E4572E;
  --ink-900:#12171A;
  --ink-700:#3A4448;
  --ink-400:#8A9497;
  --ink-block:#0E1512;
  --line:rgba(18,23,26,.08);
  --line-strong:rgba(18,23,26,.16);
  --radius-card:6px;
  --radius-pill:999px;
  --shadow-soft:0 1px 2px rgba(18,23,26,.04);
  --shadow-hover:0 8px 24px rgba(18,23,26,.08);
  --nav-h:64px;
}
*,*::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:'PingFang SC','HarmonyOS Sans','Microsoft YaHei',system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;}
p{margin:0;}
::selection{background:var(--accent);color:var(--brand-900);}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

.container-x{max-width:1240px;margin:0 auto;padding:0 24px;}
@media (min-width:768px){.container-x{padding:0 40px;}}
@media (min-width:1200px){.container-x{padding:0 48px;}}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,240,.94);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{
  background:rgba(247,245,240,.88);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom-color:var(--line);
  box-shadow:0 1px 0 rgba(18,23,26,.04);
}
.header-inner{
  height:var(--nav-h);
  display:flex;align-items:center;gap:28px;
}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:30px;height:30px;border-radius:8px;
  background:var(--brand-900);
  display:grid;place-items:center;flex:none;
}
.brand-mark span{
  display:block;width:12px;height:12px;border-radius:3px;
  background:var(--accent);
  transform:rotate(45deg);
}
.brand-text{
  font-family:'Noto Serif SC','Songti SC',serif;
  font-weight:800;font-size:19px;letter-spacing:-.01em;color:var(--brand-900);
  white-space:nowrap;
}
.nav-links{display:none;align-items:center;gap:6px;margin-left:8px;}
.nav-link{
  position:relative;padding:8px 12px;border-radius:var(--radius-pill);
  font-size:15px;color:var(--ink-700);white-space:nowrap;
  transition:color .2s ease,background-color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .24s cubic-bezier(.2,.7,.3,1);
}
.nav-link:hover{color:var(--brand-900);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-900);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-side{display:none;align-items:center;gap:14px;margin-left:auto;}
.search-wrap{position:relative;display:flex;align-items:center;}
.search-toggle{
  width:38px;height:38px;border-radius:var(--radius-pill);
  display:grid;place-items:center;color:var(--ink-700);
  transition:background-color .2s ease,color .2s ease;
}
.search-toggle:hover{background:rgba(16,60,52,.06);color:var(--brand-900);}
.search-field{
  position:absolute;right:44px;top:50%;transform:translateY(-50%) scaleX(.92);
  transform-origin:right;
  width:0;opacity:0;pointer-events:none;
  transition:width .28s ease,opacity .2s ease,transform .28s ease;
}
.search-wrap.is-open .search-field{width:220px;opacity:1;pointer-events:auto;transform:translateY(-50%) scaleX(1);}
.search-field input{
  width:100%;height:38px;border-radius:var(--radius-pill);
  border:1px solid var(--line-strong);background:var(--paper-2);
  padding:0 16px;font-size:14px;
}
.search-field input:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 2px rgba(200,244,92,.85);}
.link-login{font-size:15px;color:var(--ink-700);transition:color .2s ease;}
.link-login:hover{color:var(--brand-600);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-pill);
  font-weight:600;letter-spacing:.01em;
  transition:transform .2s ease,background-color .24s ease,color .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.btn i{transition:transform .24s ease;}
.btn:hover i.fa-arrow-right{transform:translateX(4px);}
.btn-primary{background:var(--brand-900);color:#F4F3EE;padding:10px 20px;font-size:15px;}
.btn-primary:hover{background:var(--brand-600);box-shadow:var(--shadow-hover);}
.btn-outline{
  border:1px solid var(--line-strong);color:var(--brand-900);
  background:transparent;padding:12px 24px;font-size:16px;
}
.btn-outline:hover{border-color:var(--brand-600);background:rgba(16,60,52,.04);}
.btn:active{transform:translateY(1px);}
.btn-sm{padding:9px 18px;font-size:14.5px;}
.nav-toggle{
  margin-left:auto;width:42px;height:42px;border-radius:var(--radius-pill);
  display:grid;place-items:center;color:var(--brand-900);font-size:18px;
  border:1px solid var(--line);
}
@media (min-width:1024px){
  .nav-links{display:flex;}
  .header-side{display:flex;}
  .nav-toggle{display:none;}
}
.drawer{
  position:fixed;inset:0 0 0 auto;width:min(84vw,340px);
  background:var(--paper-2);z-index:80;
  padding:24px;transform:translateX(102%);
  transition:transform .32s cubic-bezier(.2,.7,.3,1);
  box-shadow:-12px 0 40px rgba(18,23,26,.14);
  display:flex;flex-direction:column;gap:6px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer-close{
  width:38px;height:38px;border-radius:var(--radius-pill);
  display:grid;place-items:center;border:1px solid var(--line);color:var(--ink-700);
}
.drawer-link{
  padding:13px 4px;border-bottom:1px solid var(--line);
  font-size:16px;color:var(--ink-700);
}
.drawer-link.is-active{color:var(--brand-900);font-weight:600;}
.drawer-cta{margin-top:20px;}
.scrim{
  position:fixed;inset:0;background:rgba(14,21,18,.42);z-index:70;
  opacity:0;pointer-events:none;transition:opacity .3s ease;
}
.scrim.is-open{opacity:1;pointer-events:auto;}

/* 面包屑 */
.crumb-bar{padding:20px 0 4px;}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-400);
}
.crumb a{color:var(--ink-400);transition:color .2s ease;}
.crumb a:hover{color:var(--brand-600);}
.crumb .sep{opacity:.6;}
.crumb .current{color:var(--brand-900);font-weight:600;}

/* Hero */
.cat-hero{padding:26px 0 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 14px;border-radius:var(--radius-pill);
  border:1px solid var(--line-strong);background:var(--paper-2);
  font-size:12.5px;color:var(--brand-600);letter-spacing:.02em;
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);}
.cat-hero h1{
  font-family:'Noto Serif SC','Songti SC',serif;
  font-weight:800;
  font-size:clamp(34px,4.4vw,44px);
  letter-spacing:-.02em;
  line-height:1.18;
  color:var(--brand-900);
  margin:20px 0 16px;
  max-width:880px;
}
.cat-hero h1 .mark{
  background:linear-gradient(transparent 68%,rgba(200,244,92,.85) 68%);
  padding:0 2px;
}
.hero-lead{
  max-width:700px;font-size:17px;color:var(--ink-700);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:26px;
  font-size:13.5px;color:var(--ink-400);
}
.hero-meta span{display:inline-flex;align-items:center;gap:7px;}
.hero-meta i{color:var(--brand-600);font-size:12px;}
.hero-banner{
  margin-top:34px;
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line);
  position:relative;
  aspect-ratio:16/4.4;
  min-height:170px;
  max-height:220px;
}
.hero-banner img{width:100%;height:100%;object-fit:cover;}
.hero-banner .overlay-tag{
  position:absolute;left:20px;bottom:18px;
  background:rgba(14,21,18,.72);color:#F2F1EC;
  border-radius:var(--radius-card);
  padding:9px 15px;font-size:13px;letter-spacing:.02em;
  border:1px solid rgba(255,255,255,.14);
}
@media (max-width:640px){
  .hero-banner{aspect-ratio:16/8;min-height:150px;}
}

/* 主体两栏 */
.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:72px 0;}}
.section-head{max-width:720px;margin-bottom:34px;}
.section-kicker{
  font-size:12px;letter-spacing:.16em;color:var(--brand-600);
  text-transform:uppercase;margin-bottom:12px;font-weight:600;
}
.section-head h2{
  font-family:'Noto Serif SC','Songti SC',serif;
  font-size:clamp(26px,3vw,34px);color:var(--brand-900);
  letter-spacing:-.015em;
}
.section-head p{margin-top:14px;color:var(--ink-700);max-width:680px;}

.split-layout{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:1024px){
  .split-layout{grid-template-columns:265px 1fr;gap:56px;}
}
.anchor-panel{
  border:1px solid var(--line);background:var(--paper-2);
  border-radius:var(--radius-card);padding:22px 20px;
}
@media (min-width:1024px){
  .anchor-panel{position:sticky;top:calc(var(--nav-h) + 24px);}
}
.anchor-title{
  font-size:12px;letter-spacing:.14em;color:var(--ink-400);
  font-weight:600;margin-bottom:14px;
}
.anchor-list{display:flex;gap:8px;flex-wrap:wrap;}
@media (min-width:1024px){
  .anchor-list{display:block;}
}
.anchor-item a{
  display:flex;align-items:center;gap:10px;
  padding:9px 12px;border-radius:var(--radius-card);
  font-size:14.5px;color:var(--ink-700);
  border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.anchor-item a:hover{background:rgba(16,60,52,.05);color:var(--brand-900);}
.anchor-item a .num{
  font-family:'Inter',ui-monospace,monospace;
  font-size:12px;color:var(--brand-600);min-width:18px;
}
.anchor-tip{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--ink-400);line-height:1.7;
}

.feature-group + .feature-group{margin-top:44px;}
.feature-group-head{
  display:flex;align-items:baseline;gap:14px;margin-bottom:18px;
  padding-bottom:14px;border-bottom:1px solid var(--line);
}
.feature-group-head .g-num{
  font-family:'Inter',ui-monospace,monospace;
  font-size:13px;color:var(--brand-600);font-weight:600;
  padding:3px 9px;border:1px solid var(--line-strong);border-radius:var(--radius-pill);
}
.feature-group-head h3{
  font-size:20px;color:var(--brand-900);
}
.feature-group-head .g-note{margin-left:auto;font-size:13px;color:var(--ink-400);}

.feature-row{
  display:flex;gap:16px;align-items:flex-start;
  padding:18px 18px 18px 16px;
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-soft);
  transition:transform .22s ease,box-shadow .24s ease,border-color .24s ease;
  scroll-margin-top:calc(var(--nav-h) + 24px);
}
.feature-row + .feature-row{margin-top:12px;}
.feature-row:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(16,60,52,.22);
}
.feature-icon{
  width:40px;height:40px;flex:none;border-radius:var(--radius-card);
  display:grid;place-items:center;
  background:rgba(16,60,52,.06);color:var(--brand-600);font-size:15px;
  border:1px solid rgba(16,60,52,.12);
}
.feature-body{flex:1;min-width:0;}
.feature-body h4{
  font-size:17px;color:var(--ink-900);margin-bottom:5px;
}
.feature-body p{font-size:14.5px;color:var(--ink-700);max-width:640px;}
.feature-body .tip{
  display:inline-flex;align-items:center;gap:6px;margin-top:9px;
  font-size:12.5px;color:var(--brand-600);
}
.feature-body .tip i{font-size:10px;}
.feature-go{
  align-self:center;flex:none;color:var(--ink-400);font-size:14px;
  transition:color .2s ease,transform .24s ease;
}
.feature-row:hover .feature-go{color:var(--brand-600);transform:translateX(4px);}
@media (max-width:640px){
  .feature-row{padding:16px;}
  .feature-icon{width:34px;height:34px;font-size:13px;}
}

/* 流程 */
.flow{
  background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.flow-grid{
  display:grid;grid-template-columns:1fr;gap:20px;
  counter-reset:step;
}
@media (min-width:640px){.flow-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.flow-grid{grid-template-columns:repeat(4,1fr);gap:26px;}}
.flow-item{
  position:relative;padding:24px 20px 22px;
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--paper-2);
  transition:border-color .24s ease,transform .22s ease,box-shadow .24s ease;
}
.flow-item:hover{border-color:rgba(16,60,52,.22);transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.flow-item .step-num{
  font-family:'Inter',ui-monospace,monospace;
  font-size:30px;line-height:1;color:transparent;
  -webkit-text-stroke:1px rgba(16,60,52,.45);
  display:block;margin-bottom:14px;
}
.flow-item h3{font-size:17px;color:var(--brand-900);margin-bottom:8px;}
.flow-item p{font-size:14.5px;color:var(--ink-700);}

/* 场景卡 */
.scene-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:768px){.scene-grid{grid-template-columns:repeat(3,1fr);}}
.scene-card{
  background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-soft);
  transition:transform .22s ease,box-shadow .24s ease,border-color .24s ease;
  display:flex;flex-direction:column;
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(16,60,52,.22);}
.scene-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:#EDEBE5;}
.scene-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.2,.7,.3,1);}
.scene-card:hover .scene-thumb img{transform:scale(1.03);}
.scene-tag{
  position:absolute;left:12px;top:12px;
  background:rgba(14,21,18,.74);color:#F2F1EC;
  font-size:12px;padding:4px 10px;border-radius:var(--radius-pill);
  border:1px solid rgba(255,255,255,.14);
}
.scene-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.scene-body h3{font-size:18px;color:var(--brand-900);}
.scene-body p{font-size:14.5px;color:var(--ink-700);}
.scene-list{margin-top:auto;padding-top:12px;border-top:1px solid var(--line);display:grid;gap:7px;}
.scene-list li{
  font-size:13.5px;color:var(--ink-700);
  display:flex;gap:8px;align-items:flex-start;
}
.scene-list li::before{
  content:"";width:6px;height:6px;background:var(--accent);
  flex:none;margin-top:8px;border-radius:1px;
}

/* 体验要点 */
.metric-band{
  background:var(--ink-block);color:#F2F1EC;
  border-radius:var(--radius-card);
  padding:40px 28px;
  display:grid;gap:28px;
  border:1px solid rgba(255,255,255,.12);
}
@media (min-width:768px){.metric-band{grid-template-columns:repeat(4,1fr);padding:44px 40px;}}
.metric{border-left:2px solid var(--accent);padding-left:16px;}
.metric .m-label{font-size:12.5px;letter-spacing:.12em;color:rgba(242,241,236,.62);}
.metric .m-value{
  font-family:'Noto Serif SC','Songti SC',serif;
  font-size:24px;margin-top:10px;color:#F7F5F0;
}
.metric .m-desc{font-size:13.5px;color:rgba(242,241,236,.72);margin-top:8px;line-height:1.7;}

/* FAQ */
.faq-wrap{display:grid;gap:0;}
@media (min-width:1024px){.faq-wrap{grid-template-columns:1fr 1fr;column-gap:56px;}}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;gap:16px;
  padding:20px 4px;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink-900);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand-600);}
.faq-q .faq-icon{
  flex:none;width:24px;height:24px;margin-left:auto;
  display:grid;place-items:center;color:var(--brand-600);
  font-size:15px;transition:transform .24s cubic-bezier(.2,.7,.3,1);
}
.faq-item.is-open .faq-q .faq-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .24s ease;
}
.faq-a-inner{padding:0 44px 20px 4px;font-size:15px;color:var(--ink-700);}
.faq-item.is-open .faq-a{max-height:340px;}

/* CTA */
.cta-band{
  background:var(--ink-block);
  border-radius:var(--radius-card);
  padding:48px 28px;
  display:grid;gap:22px;
  border:1px solid rgba(255,255,255,.12);
}
@media (min-width:1024px){
  .cta-band{grid-template-columns:1fr auto;align-items:center;padding:56px 56px;gap:40px;}
}
.cta-band h2{
  font-family:'Noto Serif SC','Songti SC',serif;
  color:#F7F5F0;font-size:clamp(24px,2.8vw,32px);letter-spacing:-.01em;
}
.cta-band p{color:rgba(242,241,236,.76);margin-top:12px;font-size:15.5px;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.btn-accent{background:var(--accent);color:#0E1512;padding:13px 26px;font-size:16px;}
.btn-accent:hover{background:#D7FF74;box-shadow:0 8px 24px rgba(200,244,92,.22);}
.btn-ghost{
  border:1px solid rgba(255,255,255,.28);color:#F7F5F0;
  padding:13px 26px;font-size:16px;
}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);}

/* 页脚 */
.site-footer{
  background:var(--ink-block);color:#F2F1EC;
  margin-top:64px;padding:60px 0 28px;
}
.footer-grid{
  display:grid;grid-template-columns:1fr;gap:34px;
}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:48px;}}
.footer-brand{
  font-family:'Noto Serif SC','Songti SC',serif;
  font-size:21px;font-weight:800;color:#F7F5F0;letter-spacing:-.01em;
}
.footer-desc{
  margin-top:14px;font-size:14px;color:rgba(242,241,236,.66);
  max-width:320px;line-height:1.8;
}
.footer-title{
  font-size:12.5px;letter-spacing:.14em;
  color:rgba(242,241,236,.52);margin-bottom:16px;font-weight:600;
}
.footer-link{
  display:block;font-size:14.5px;color:rgba(242,241,236,.82);
  padding:6px 0;transition:color .2s ease,transform .2s ease;
}
a.footer-link:hover{color:var(--accent);transform:translateX(2px);}
.footer-bottom{
  margin-top:44px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:rgba(242,241,236,.56);
}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .4s cubic-bezier(.2,.7,.3,1),transform .4s cubic-bezier(.2,.7,.3,1);}
.reveal.is-visible{opacity:1;transform:translateY(0);}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:opacity .01ms linear;}
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;}
}

/* roulang page: category2 */
:root{
    --paper:#F7F5F0;
    --paper-2:#FFFFFF;
    --brand-900:#103C34;
    --brand-600:#1C6A57;
    --accent:#C8F45C;
    --accent-warm:#E4572E;
    --ink-900:#12171A;
    --ink-700:#3A4448;
    --ink-400:#8A9497;
    --ink-block:#0E1512;
    --on-dark:#F2F1EC;
    --line:rgba(18,23,26,.08);
    --line-strong:rgba(18,23,26,.14);
    --line-dark:rgba(255,255,255,.12);
    --radius:6px;
    --radius-pill:999px;
    --shadow-1:0 1px 2px rgba(18,23,26,.04);
    --shadow-2:0 8px 24px rgba(18,23,26,.08);
    --serif:'Noto Serif SC','Songti SC','Source Han Serif SC',serif;
    --sans:'PingFang SC','HarmonyOS Sans','Microsoft YaHei',system-ui,sans-serif;
    --nav-h:64px;
  }

  *,*::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(--sans);
    font-size:16.5px;
    line-height:1.8;
    letter-spacing:.01em;
    -webkit-font-smoothing:antialiased;
  }
  body.no-scroll{overflow:hidden;}
  img{display:block;max-width:100%;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,p{margin:0;}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

  .container-x{
    width:100%;
    max-width:1240px;
    margin:0 auto;
    padding-left:24px;
    padding-right:24px;
  }
  @media (min-width:768px){ .container-x{padding-left:40px;padding-right:40px;} }
  @media (min-width:1200px){ .container-x{padding-left:48px;padding-right:48px;} }

  .section{padding-top:64px;padding-bottom:64px;}
  @media (min-width:768px){ .section{padding-top:80px;padding-bottom:80px;} }
  @media (min-width:1024px){ .section{padding-top:96px;padding-bottom:96px;} }

  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;letter-spacing:.16em;text-transform:uppercase;
    color:var(--brand-600);font-weight:600;
  }
  .eyebrow::before{
    content:"";width:22px;height:2px;background:var(--accent);display:inline-block;
  }
  .h1{
    font-family:var(--serif);
    font-weight:800;
    font-size:clamp(34px,5vw,44px);
    line-height:1.16;
    letter-spacing:-.02em;
    color:var(--brand-900);
  }
  .h2{
    font-family:var(--serif);
    font-weight:700;
    font-size:clamp(26px,3.4vw,34px);
    line-height:1.22;
    letter-spacing:-.02em;
    color:var(--brand-900);
  }
  .h3{
    font-family:var(--serif);
    font-weight:700;
    font-size:21px;
    line-height:1.35;
    color:var(--brand-900);
  }
  .lead{font-size:clamp(16px,1.6vw,17.5px);color:var(--ink-700);max-width:760px;}
  .muted{color:var(--ink-400);font-size:14px;}
  .hl{
    background-image:linear-gradient(transparent 62%,var(--accent) 62%);
    background-repeat:no-repeat;
  }

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(247,245,240,.9);
    backdrop-filter:blur(8px);
    -webkit-backdrop-filter:blur(8px);
    border-bottom:1px solid var(--line);
  }
  .nav-inner{
    display:flex;align-items:center;justify-content:space-between;gap:20px;
    height:var(--nav-h);
  }
  .logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .logo-mark{
    width:28px;height:28px;border-radius:6px;
    background:var(--brand-900);
    display:grid;place-items:center;gap:0;
  }
  .logo-mark span{
    display:block;width:12px;height:2px;background:var(--accent);border-radius:2px;
  }
  .logo-mark span + span{margin-top:4px;width:8px;}
  .logo-text{
    font-family:var(--serif);font-weight:800;font-size:18px;letter-spacing:-.01em;
    color:var(--brand-900);white-space:nowrap;
  }
  .nav-links{display:none;align-items:center;gap:26px;}
  @media (min-width:1024px){ .nav-links{display:flex;} }
  .nav-link{
    position:relative;font-size:14.5px;color:var(--ink-700);
    padding:6px 0;transition:color .2s ease;
  }
  .nav-link::after{
    content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
    background:var(--accent);transition:width .24s cubic-bezier(.2,.7,.3,1);
  }
  .nav-link:hover{color:var(--brand-600);}
  .nav-link:hover::after{width:100%;}
  .nav-link.is-active{color:var(--brand-900);font-weight:600;}
  .nav-link.is-active::after{width:100%;}

  .nav-right{display:flex;align-items:center;gap:14px;}
  .icon-btn{
    width:38px;height:38px;border-radius:var(--radius-pill);
    border:1px solid var(--line-strong);
    display:grid;place-items:center;color:var(--ink-700);
    transition:border-color .2s ease,color .2s ease,background .2s ease;
  }
  .icon-btn:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--paper-2);}
  .search-wrap{position:relative;display:none;}
  @media (min-width:1024px){ .search-wrap{display:block;} }
  .search-field{
    position:absolute;right:46px;top:50%;transform:translateY(-50%);
    width:0;opacity:0;pointer-events:none;
    transition:width .28s cubic-bezier(.2,.7,.3,1),opacity .2s ease;
  }
  .search-wrap.is-open .search-field{width:220px;opacity:1;pointer-events:auto;}
  .search-field input{
    width:100%;height:38px;border-radius:var(--radius-pill);
    border:1px solid var(--line-strong);background:var(--paper-2);
    padding:0 16px;font-size:14px;color:var(--ink-900);
  }
  .search-field input::placeholder{color:var(--ink-400);}
  .search-field input:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 2px rgba(200,244,92,.9);}

  .btn{
    display:inline-flex;align-items:center;gap:8px;
    border-radius:var(--radius-pill);
    font-size:14.5px;font-weight:600;
    padding:11px 24px;
    transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  }
  .btn-primary{background:var(--brand-900);color:var(--on-dark);}
  .btn-primary:hover{background:var(--brand-600);transform:translateY(-1px);box-shadow:var(--shadow-2);}
  .btn-ghost{border:1px solid var(--line-strong);color:var(--brand-900);background:transparent;}
  .btn-ghost:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--paper-2);}
  .btn .arrow{transition:transform .24s cubic-bezier(.2,.7,.3,1);}
  .btn:hover .arrow{transform:translateX(4px);}
  .nav-cta{display:none;}
  @media (min-width:1024px){ .nav-cta{display:inline-flex;} }

  .nav-burger{
    width:38px;height:38px;border-radius:var(--radius-pill);
    border:1px solid var(--line-strong);
    display:grid;place-items:center;
  }
  @media (min-width:1024px){ .nav-burger{display:none;} }
  .nav-burger span{display:block;width:16px;height:1.5px;background:var(--brand-900);border-radius:2px;}
  .nav-burger span + span{margin-top:4px;}

  .drawer{
    position:fixed;top:0;right:0;z-index:80;
    width:min(86vw,340px);height:100%;
    background:var(--paper-2);
    border-left:1px solid var(--line);
    padding:24px;
    transform:translateX(102%);
    transition:transform .3s cubic-bezier(.2,.7,.3,1);
    display:flex;flex-direction:column;gap:8px;
    box-shadow:-12px 0 40px rgba(18,23,26,.08);
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
  .drawer-link{
    padding:14px 4px;border-bottom:1px solid var(--line);
    font-size:16px;color:var(--ink-900);
  }
  .drawer-link.is-active{color:var(--brand-600);font-weight:600;}
  .drawer-cta{margin-top:22px;justify-content:center;}

  /* ---------- 面包屑 ---------- */
  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:13.5px;color:var(--ink-400);
    padding-top:24px;
  }
  .breadcrumb a{color:var(--ink-700);transition:color .2s ease;}
  .breadcrumb a:hover{color:var(--brand-600);}
  .breadcrumb .sep{color:var(--ink-400);}

  /* ---------- 页头 ---------- */
  .page-hero{padding-top:28px;padding-bottom:0;}
  .page-hero-inner{display:grid;gap:28px;}
  @media (min-width:1024px){
    .page-hero-inner{grid-template-columns:7fr 5fr;gap:48px;align-items:end;}
  }
  .page-hero h1{margin-top:14px;}
  .page-hero .lead{margin-top:18px;}
  .hero-facts{
    display:flex;flex-wrap:wrap;gap:12px 22px;margin-top:24px;
    font-size:13.5px;color:var(--ink-700);
  }
  .hero-facts span{display:inline-flex;align-items:center;gap:8px;}
  .hero-facts span::before{content:"";width:6px;height:6px;background:var(--accent);border-radius:2px;}
  .hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
  .hero-aside{
    border:1px solid var(--line);border-radius:var(--radius);
    background:var(--paper-2);padding:24px;box-shadow:var(--shadow-1);
  }
  .hero-aside h2{font-family:var(--serif);font-size:18px;color:var(--brand-900);}
  .aside-list{margin-top:14px;display:grid;gap:12px;}
  .aside-list li{display:flex;gap:12px;font-size:14.5px;color:var(--ink-700);}
  .aside-num{
    font-family:var(--sans);font-size:12px;font-weight:700;color:var(--brand-900);
    border:1px solid var(--line-strong);border-radius:4px;
    min-width:26px;height:26px;display:grid;place-items:center;flex-shrink:0;
  }
  .banner{
    margin-top:40px;border-radius:var(--radius);overflow:hidden;
    border:1px solid var(--line);box-shadow:var(--shadow-1);
  }
  .banner img{
    width:100%;height:180px;object-fit:cover;
    transition:transform .5s cubic-bezier(.2,.7,.3,1);
  }
  @media (min-width:768px){ .banner img{height:220px;} }
  .banner:hover img{transform:scale(1.03);}

  /* ---------- 标签切换 ---------- */
  .tabs{
    display:flex;gap:10px;overflow-x:auto;
    padding-bottom:6px;margin-top:6px;
    border-bottom:1px solid var(--line);
    scrollbar-width:thin;
  }
  .tab{
    flex:0 0 auto;
    border:1px solid var(--line-strong);border-radius:var(--radius-pill);
    padding:8px 18px;font-size:14px;color:var(--ink-700);
    transition:border-color .2s ease,color .2s ease,background .2s ease;
  }
  .tab:hover{border-color:var(--brand-600);color:var(--brand-600);}
  .tab.is-active{background:var(--brand-900);border-color:var(--brand-900);color:var(--on-dark);}
  .tabs-hint{margin-top:12px;font-size:13px;color:var(--ink-400);}

  /* ---------- 场景卡 ---------- */
  .scene-grid{
    display:grid;gap:24px;margin-top:32px;
  }
  @media (min-width:768px){ .scene-grid{grid-template-columns:repeat(2,1fr);gap:28px;} }
  .scene-card{
    background:var(--paper-2);
    border:1px solid var(--line);
    border-radius:var(--radius);
    overflow:hidden;display:flex;flex-direction:column;
    transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  }
  .scene-card:hover{
    border-color:rgba(28,106,87,.4);
    transform:translateY(-2px);
    box-shadow:var(--shadow-2);
  }
  .scene-cover{position:relative;display:block;background:#E9E6DE;}
  .scene-cover img{
    width:100%;aspect-ratio:16/10;object-fit:cover;
    transition:transform .45s cubic-bezier(.2,.7,.3,1);
  }
  .scene-card:hover .scene-cover img{transform:scale(1.03);}
  .scene-tag{
    position:absolute;left:14px;top:14px;
    background:rgba(16,60,52,.92);color:var(--on-dark);
    font-size:12px;letter-spacing:.06em;
    padding:5px 12px;border-radius:4px;
  }
  .scene-tag.hot{background:var(--accent);color:var(--brand-900);font-weight:700;}
  .scene-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
  .scene-body h3 a{transition:color .2s ease;background-image:linear-gradient(var(--accent),var(--accent));background-size:0 2px;background-repeat:no-repeat;background-position:0 100%;transition:background-size .24s ease,color .2s ease;}
  .scene-body h3 a:hover{color:var(--brand-600);background-size:100% 2px;}
  .scene-body p{font-size:15px;color:var(--ink-700);}
  .ticks{display:grid;gap:8px;margin-top:2px;}
  .ticks li{
    position:relative;padding-left:18px;font-size:14px;color:var(--ink-700);
  }
  .ticks li::before{
    content:"";position:absolute;left:0;top:.65em;
    width:8px;height:8px;background:var(--accent);border-radius:2px;
  }
  .link-arrow{
    margin-top:auto;display:inline-flex;align-items:center;gap:6px;
    font-size:14.5px;font-weight:600;color:var(--brand-600);
  }
  .link-arrow .arrow{transition:transform .24s cubic-bezier(.2,.7,.3,1);}
  .link-arrow:hover .arrow{transform:translateX(4px);}

  /* ---------- 设备适配 ---------- */
  .device-list{margin-top:32px;border-top:1px solid var(--line);}
  .device-row{
    display:grid;gap:6px;
    padding:20px 0;border-bottom:1px solid var(--line);
    align-items:baseline;
  }
  @media (min-width:768px){
    .device-row{grid-template-columns:180px 1fr auto;gap:24px;align-items:center;}
  }
  .device-name{font-family:var(--serif);font-size:17px;font-weight:700;color:var(--brand-900);}
  .device-desc{font-size:14.5px;color:var(--ink-700);}
  .tag{
    justify-self:start;
    font-size:12px;letter-spacing:.04em;
    border:1px solid var(--line-strong);border-radius:4px;
    padding:4px 10px;color:var(--ink-700);white-space:nowrap;
  }
  .tag.accent{border-color:rgba(16,60,52,.25);color:var(--brand-900);background:rgba(200,244,92,.35);}

  /* ---------- 步骤 ---------- */
  .steps{
    margin-top:34px;display:grid;gap:26px;
  }
  @media (min-width:640px){ .steps{grid-template-columns:repeat(2,1fr);gap:28px;} }
  @media (min-width:1024px){ .steps{grid-template-columns:repeat(4,1fr);gap:28px;} }
  .step{border-top:1px solid var(--line-strong);padding-top:18px;}
  .step-num{
    font-family:var(--sans);font-size:22px;font-weight:800;
    color:transparent;-webkit-text-stroke:1.4px var(--brand-600);
    letter-spacing:.02em;display:block;
  }
  .step h3{font-size:17.5px;margin-top:10px;}
  .step p{margin-top:8px;font-size:14.5px;color:var(--ink-700);}

  /* ---------- 深色反馈块 ---------- */
  .ink-block{
    background:var(--ink-block);color:var(--on-dark);
    padding:64px 0;
  }
  @media (min-width:1024px){ .ink-block{padding:88px 0;} }
  .ink-block .h2{color:var(--on-dark);}
  .ink-block .eyebrow{color:var(--accent);}
  .quote-lead{
    margin:28px 0 0;padding:0;border:0;
    font-family:var(--serif);font-size:clamp(21px,2.6vw,28px);
    line-height:1.5;color:var(--on-dark);max-width:820px;
  }
  .quote-lead .mark{color:var(--accent);}
  .quote-meta{
    margin-top:22px;display:flex;flex-wrap:wrap;gap:10px 22px;
    font-size:13.5px;color:rgba(242,241,236,.62);
  }
  .mini-grid{
    margin-top:44px;display:grid;gap:20px;
    border-top:1px solid var(--line-dark);padding-top:34px;
  }
  @media (min-width:768px){ .mini-grid{grid-template-columns:repeat(2,1fr);gap:28px;} }
  .mini{padding-left:18px;border-left:2px solid var(--accent);}
  .mini p{font-size:15px;color:rgba(242,241,236,.86);}
  .mini span{display:block;margin-top:12px;font-size:13px;color:rgba(242,241,236,.55);}

  /* ---------- FAQ ---------- */
  .faq-wrap{margin-top:30px;display:grid;gap:0;}
  @media (min-width:900px){ .faq-wrap{grid-template-columns:repeat(2,1fr);column-gap:48px;} }
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item summary{
    list-style:none;cursor:pointer;
    display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
    padding:20px 0;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item h3{
    font-family:var(--sans);font-size:16.5px;font-weight:600;
    color:var(--ink-900);line-height:1.6;
  }
  .faq-mark{
    flex-shrink:0;width:22px;height:22px;position:relative;margin-top:3px;
    transition:transform .24s cubic-bezier(.2,.7,.3,1);
  }
  .faq-mark::before,.faq-mark::after{
    content:"";position:absolute;left:50%;top:50%;
    background:var(--brand-600);border-radius:2px;
    transform:translate(-50%,-50%);
  }
  .faq-mark::before{width:14px;height:1.6px;}
  .faq-mark::after{width:1.6px;height:14px;transition:opacity .2s ease;}
  .faq-item[open] .faq-mark{transform:rotate(180deg);}
  .faq-item[open] .faq-mark::after{opacity:0;}
  .faq-answer{padding:0 0 22px;font-size:15px;color:var(--ink-700);max-width:680px;}

  /* ---------- CTA ---------- */
  .cta-band{
    background:var(--brand-900);color:var(--on-dark);
    padding:48px 0;
  }
  @media (min-width:1024px){ .cta-band{padding:64px 0;} }
  .cta-inner{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  }
  .cta-inner h2{
    font-family:var(--serif);font-weight:700;
    font-size:clamp(22px,2.8vw,30px);line-height:1.3;color:var(--on-dark);max-width:620px;
  }
  .cta-inner p{margin-top:10px;font-size:15px;color:rgba(242,241,236,.78);max-width:560px;}
  .btn-light{background:var(--accent);color:var(--brand-900);}
  .btn-light:hover{background:#D6FA78;transform:translateY(-1px);box-shadow:0 10px 26px rgba(0,0,0,.22);}
  .btn-outline-light{border:1px solid rgba(255,255,255,.35);color:var(--on-dark);}
  .btn-outline-light:hover{border-color:var(--accent);color:var(--accent);}

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:var(--ink-block);color:rgba(242,241,236,.78);
    padding-top:64px;padding-bottom:28px;
  }
  .footer-grid{
    display:grid;gap:34px;
    padding-bottom:40px;border-bottom:1px solid var(--line-dark);
  }
  @media (min-width:640px){ .footer-grid{grid-template-columns:repeat(2,1fr);} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;} }
  .footer-brand{
    font-family:var(--serif);font-weight:800;font-size:20px;color:var(--on-dark);
  }
  .footer-desc{margin-top:14px;font-size:14.5px;line-height:1.8;max-width:320px;color:rgba(242,241,236,.66);}
  .footer-title{
    font-size:13px;letter-spacing:.12em;color:rgba(242,241,236,.52);
    margin-bottom:16px;
  }
  .footer-link{
    display:block;font-size:14.5px;color:rgba(242,241,236,.82);
    padding:6px 0;transition:color .2s ease;
  }
  a.footer-link:hover{color:var(--accent);}
  .footer-bottom{
    padding-top:22px;display:flex;flex-wrap:wrap;gap:10px 24px;
    justify-content:space-between;font-size:13px;color:rgba(242,241,236,.5);
  }

  /* ---------- 动效 ---------- */
  .reveal{opacity:0;transform:translateY(16px);transition:opacity .4s cubic-bezier(.2,.7,.3,1),transform .4s cubic-bezier(.2,.7,.3,1);}
  .reveal.is-in{opacity:1;transform:none;}
  @media (prefers-reduced-motion:reduce){
    *{transition-duration:.001ms !important;animation-duration:.001ms !important;}
    .reveal{opacity:1;transform:none;}
    html{scroll-behavior:auto;}
  }

/* roulang page: category3 */
:root {
    --paper: #F7F5F0;
    --paper-2: #FFFFFF;
    --brand-900: #103C34;
    --brand-600: #1C6A57;
    --accent: #C8F45C;
    --accent-warm: #E4572E;
    --ink-900: #12171A;
    --ink-700: #3A4448;
    --ink-400: #8A9497;
    --ink-block: #0E1512;
    --line: rgba(18, 23, 26, .08);
    --line-mid: rgba(18, 23, 26, .14);
    --line-dark: rgba(255, 255, 255, .12);
    --r-card: 6px;
    --r-badge: 4px;
    --r-pill: 999px;
    --sh-1: 0 1px 2px rgba(18, 23, 26, .04);
    --sh-2: 0 8px 24px rgba(18, 23, 26, .08);
    --serif: "Noto Serif SC", "Songti SC", "Source Han Serif SC", "SimSun", serif;
    --sans: "PingFang SC", "HarmonyOS Sans", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
    --mono: "Inter", "SFMono-Regular", ui-monospace, Menlo, monospace;
    --nav-h: 64px;
  }

  *, *::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(--sans);
    font-size: 16px;
    line-height: 1.8;
    letter-spacing: .01em;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }
  img, svg { display: block; max-width: 100%; }
  a { color: inherit; text-decoration: none; }
  button { background: none; border: 0; cursor: pointer; font: inherit; color: inherit; }
  input { font: inherit; color: inherit; }
  ul, ol { margin: 0; padding: 0; list-style: none; }
  p { margin: 0; }

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

  .container-x { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 24px; }
  @media (min-width: 768px) { .container-x { padding: 0 40px; } }
  @media (min-width: 1200px) { .container-x { padding: 0 48px; } }

  h1, h2, h3, h4 { margin: 0; font-family: var(--serif); font-weight: 700; letter-spacing: -.02em; line-height: 1.2; }
  .h1 { font-size: clamp(34px, 5vw, 46px); font-weight: 800; line-height: 1.16; }
  .h2 { font-size: clamp(26px, 3.2vw, 34px); font-weight: 700; }
  .h3 { font-size: clamp(18px, 2vw, 22px); font-weight: 700; line-height: 1.35; }
  .h4 { font-size: 17px; font-weight: 700; line-height: 1.4; }

  .lead { max-width: 700px; color: var(--ink-700); font-size: 17px; }

  /* ============ 导航 ============ */
  .site-header {
    position: sticky; top: 0; z-index: 50;
    background: rgba(247, 245, 240, .94);
    border-bottom: 1px solid transparent;
    transition: background .25s ease, border-color .25s ease, box-shadow .25s ease;
  }
  .site-header.is-stuck {
    background: rgba(247, 245, 240, .88);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    border-bottom-color: var(--line);
    box-shadow: 0 1px 2px rgba(18, 23, 26, .04);
  }
  .nav-row { display: flex; align-items: center; gap: 18px; height: var(--nav-h); }
  @media (max-width: 1023px) { .nav-row { height: 56px; } }

  .brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
  .brand-mark {
    width: 30px; height: 30px; border-radius: 8px;
    background: var(--brand-900); color: var(--accent);
    display: grid; place-items: center; flex-shrink: 0;
  }
  .brand-mark svg { width: 16px; height: 16px; }
  .brand-text { font-family: var(--serif); font-weight: 800; font-size: 19px; color: var(--brand-900); letter-spacing: -.01em; }

  .nav-links { display: none; align-items: center; gap: 2px; margin-left: 10px; }
  @media (min-width: 1024px) { .nav-links { display: flex; } }
  .nav-link {
    position: relative; padding: 8px 12px; border-radius: var(--r-badge);
    font-size: 15px; color: var(--ink-700); transition: color .2s ease, background .2s ease;
  }
  .nav-link:hover { color: var(--brand-900); background: rgba(16, 60, 52, .06); }
  .nav-link.is-active { color: var(--brand-900); font-weight: 600; }
  .nav-link.is-active::after {
    content: ""; position: absolute; left: 12px; right: 12px; bottom: 1px;
    height: 2px; border-radius: 2px; background: var(--accent);
  }

  .nav-actions { margin-left: auto; display: flex; align-items: center; gap: 8px; }
  .icon-btn {
    width: 38px; height: 38px; border-radius: var(--r-pill);
    display: none; place-items: center; color: var(--ink-700);
    border: 1px solid var(--line); transition: color .2s ease, border-color .2s ease, background .2s ease;
  }
  @media (min-width: 1024px) { .icon-btn { display: grid; } }
  .icon-btn:hover { color: var(--brand-900); border-color: var(--line-mid); background: rgba(255, 255, 255, .7); }
  .icon-btn svg { width: 17px; height: 17px; }

  .nav-login { display: none; font-size: 15px; color: var(--ink-700); padding: 6px 6px; transition: color .2s ease; }
  @media (min-width: 1024px) { .nav-login { display: inline-block; } }
  .nav-login:hover { color: var(--brand-600); }

  .nav-search { display: none; border-top: 1px solid var(--line); background: var(--paper-2); }
  .nav-search.is-open { display: block; }
  .nav-search .inner { padding: 14px 0; display: flex; gap: 10px; align-items: center; }
  .nav-search input {
    flex: 1; padding: 12px 16px; border: 1px solid var(--line-mid);
    border-radius: var(--r-card); background: var(--paper); font-size: 15px;
  }
  .nav-search input::placeholder { color: var(--ink-400); }
  .nav-search input:focus { outline: none; border-color: var(--brand-600); box-shadow: 0 0 0 2px rgba(200, 244, 92, .85); }

  .menu-btn {
    width: 40px; height: 40px; border-radius: var(--r-card);
    display: grid; place-items: center; border: 1px solid var(--line); color: var(--brand-900);
  }
  @media (min-width: 1024px) { .menu-btn { display: none; } }
  .menu-btn:hover { border-color: var(--line-mid); background: rgba(255, 255, 255, .7); }
  .menu-btn svg { width: 18px; height: 18px; }

  /* ============ 按钮 ============ */
  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    border-radius: var(--r-pill); font-size: 15px; font-weight: 600;
    padding: 12px 22px; white-space: nowrap;
    transition: transform .2s ease, background .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease;
  }
  .btn-primary { background: var(--brand-900); color: #F2F1EC; border: 1px solid var(--brand-900); }
  .btn-primary:hover { background: var(--brand-600); border-color: var(--brand-600); box-shadow: var(--sh-2); }
  .btn-primary:active { transform: translateY(1px); }
  .btn-ghost { background: transparent; color: var(--brand-900); border: 1px solid var(--line-mid); }
  .btn-ghost:hover { border-color: var(--brand-600); color: var(--brand-600); }
  .btn-accent { background: var(--accent); color: var(--brand-900); border: 1px solid var(--accent); }
  .btn-accent:hover { box-shadow: var(--sh-2); filter: brightness(.97); }
  .btn-light { background: transparent; color: #F2F1EC; border: 1px solid rgba(255, 255, 255, .32); }
  .btn-light:hover { border-color: var(--accent); color: var(--accent); }
  .btn-sm { padding: 9px 16px; font-size: 14px; }
  .btn .arrow { transition: transform .2s ease; }
  .btn:hover .arrow { transform: translateX(4px); }
  .btn[disabled] { opacity: .4; cursor: not-allowed; }

  /* ============ 抽屉 ============ */
  .drawer-mask {
    position: fixed; inset: 0; background: rgba(14, 21, 18, .46);
    z-index: 60; opacity: 0; pointer-events: none; transition: opacity .25s ease;
  }
  .drawer-mask.is-open { opacity: 1; pointer-events: auto; }
  .drawer {
    position: fixed; top: 0; right: 0; bottom: 0; z-index: 70;
    width: min(86vw, 360px); background: var(--paper-2);
    transform: translateX(102%); transition: transform .3s cubic-bezier(.2, .7, .3, 1);
    padding: 18px 20px 28px; display: flex; flex-direction: column; gap: 6px;
    border-left: 1px solid var(--line); overflow-y: auto;
  }
  .drawer.is-open { transform: none; }
  .drawer-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 14px; border-bottom: 1px solid var(--line); margin-bottom: 10px; }
  .drawer-title { font-family: var(--serif); font-weight: 800; font-size: 18px; color: var(--brand-900); }
  .drawer-close { width: 38px; height: 38px; border-radius: var(--r-card); border: 1px solid var(--line); display: grid; place-items: center; color: var(--ink-700); }
  .drawer-close:hover { border-color: var(--line-mid); color: var(--brand-900); }
  .drawer-link {
    padding: 13px 12px; border-radius: var(--r-card); font-size: 16px;
    color: var(--ink-700); transition: background .2s ease, color .2s ease;
  }
  .drawer-link:hover { background: rgba(16, 60, 52, .06); color: var(--brand-900); }
  .drawer-link.is-active { color: var(--brand-900); font-weight: 600; background: rgba(200, 244, 92, .22); }
  .drawer-cta { margin-top: 14px; }
  .drawer-cta .btn { width: 100%; }

  /* ============ Hero / 页头 ============ */
  .page-hero { padding: 28px 0 0; }
  .breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 13px; color: var(--ink-400); margin-bottom: 22px; }
  .breadcrumb a:hover { color: var(--brand-600); }
  .breadcrumb .sep { color: var(--ink-400); opacity: .7; }
  .breadcrumb .current { color: var(--ink-700); }

  .hero-split { display: grid; gap: 30px; align-items: center; }
  @media (min-width: 1024px) { .hero-split { grid-template-columns: 7fr 5fr; gap: 48px; } }

  .badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 6px 12px; border-radius: var(--r-badge);
    background: rgba(200, 244, 92, .32); border: 1px solid rgba(16, 60, 52, .12);
    font-size: 12px; letter-spacing: .06em; color: var(--brand-900); font-weight: 600;
  }
  .badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--brand-600); }

  .hero-copy .h1 { margin-top: 18px; }
  .hero-copy .h1 em { font-style: normal; position: relative; white-space: nowrap; }
  .hero-copy .h1 em::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: 4px; height: 8px;
    background: rgba(200, 244, 92, .75); z-index: -1; border-radius: 2px;
  }
  .hero-lead { margin-top: 18px; font-size: 17px; color: var(--ink-700); max-width: 620px; }
  .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }

  .hero-meta {
    display: flex; flex-wrap: wrap; align-items: center; gap: 12px;
    margin-top: 26px; padding-top: 20px; border-top: 1px solid var(--line);
    font-size: 14px; color: var(--ink-400);
  }
  .hero-meta .item { display: inline-flex; align-items: center; gap: 7px; }
  .hero-meta .item svg { width: 15px; height: 15px; color: var(--brand-600); }
  .hero-meta .divider { width: 1px; height: 14px; background: var(--line-mid); }

  .hero-banner { position: relative; }
  .hero-banner img {
    width: 100%; height: 220px; object-fit: cover;
    border-radius: var(--r-card); border: 1px solid var(--line);
  }
  .hero-banner .banner-tag {
    position: absolute; left: 14px; bottom: 14px;
    background: rgba(14, 21, 18, .82); color: #F2F1EC;
    font-size: 13px; padding: 7px 14px; border-radius: var(--r-pill);
    border: 1px solid rgba(255, 255, 255, .14);
  }

  /* ============ 板块 ============ */
  .section { padding: 56px 0; }
  @media (min-width: 768px) { .section { padding: 76px 0; } }
  @media (min-width: 1024px) { .section { padding: 96px 0; } }
  .section-alt { background: var(--paper-2); 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: 20px; margin-bottom: 34px; }
  .eyebrow { font-family: var(--mono); font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--brand-600); }
  .section-head .h2 { margin-top: 10px; }
  .section-sub { margin-top: 12px; font-size: 15px; color: var(--ink-400); max-width: 620px; }
  .text-link {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 15px; font-weight: 600; color: var(--brand-900);
    padding-bottom: 2px; border-bottom: 1px solid var(--line-mid);
    transition: color .2s ease, border-color .2s ease;
  }
  .text-link:hover { color: var(--brand-600); border-color: var(--accent); }
  .text-link .arrow { transition: transform .2s ease; }
  .text-link:hover .arrow { transform: translateX(4px); }

  /* 精选头条 */
  .feature-story {
    display: grid; background: var(--paper-2);
    border: 1px solid var(--line); border-radius: var(--r-card); overflow: hidden;
    box-shadow: var(--sh-1); transition: box-shadow .3s ease, border-color .3s ease;
  }
  @media (min-width: 1024px) { .feature-story { grid-template-columns: 1fr 1fr; } }
  .feature-story:hover { box-shadow: var(--sh-2); border-color: rgba(28, 106, 87, .3); }
  .feature-media { order: -1; }
  @media (min-width: 1024px) { .feature-media { order: 0; } }
  .feature-media img { width: 100%; height: 100%; min-height: 240px; object-fit: cover; }
  .feature-body { padding: 26px 22px; display: flex; flex-direction: column; gap: 16px; }
  @media (min-width: 768px) { .feature-body { padding: 40px; } }
  .tag-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
  .tag {
    display: inline-flex; align-items: center; padding: 4px 10px;
    border-radius: var(--r-badge); font-size: 12px; font-weight: 600;
    background: rgba(16, 60, 52, .07); color: var(--brand-900); border: 1px solid transparent;
  }
  .tag-accent { background: rgba(200, 244, 92, .38); }
  .tag-warm { background: rgba(228, 87, 46, .1); color: var(--accent-warm); }
  .meta-time { font-family: var(--mono); font-size: 13px; color: var(--ink-400); }
  .feature-body p { color: var(--ink-700); font-size: 16px; max-width: 620px; }
  .bullet-list { display: flex; flex-direction: column; gap: 10px; }
  .bullet-list li { display: flex; gap: 10px; font-size: 15px; color: var(--ink-700); }
  .bullet-list li::before {
    content: ""; flex-shrink: 0; width: 7px; height: 7px; margin-top: 11px;
    background: var(--accent); border-radius: 2px;
  }

  /* 节奏卡 */
  .rhythm-grid { display: grid; gap: 16px; }
  @media (min-width: 640px) { .rhythm-grid { grid-template-columns: repeat(2, 1fr); } }
  @media (min-width: 1024px) { .rhythm-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; } }
  .rhythm-card {
    background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--r-card);
    padding: 24px; box-shadow: var(--sh-1);
    transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  }
  .rhythm-card:hover { transform: translateY(-2px); box-shadow: var(--sh-2); border-color: rgba(28, 106, 87, .32); }
  .rhythm-num { font-family: var(--mono); font-size: 12px; letter-spacing: .14em; color: var(--ink-400); }
  .rhythm-card .h3 { margin-top: 12px; }
  .rhythm-card p { margin-top: 10px; font-size: 15px; color: var(--ink-700); }
  .progress { height: 6px; border-radius: var(--r-pill); background: rgba(18, 23, 26, .08); overflow: hidden; margin-top: 18px; }
  .progress span { display: block; height: 100%; border-radius: var(--r-pill); background: var(--brand-600); }
  .progress.accent span { background: var(--accent); }
  .progress-note { margin-top: 8px; font-size: 13px; color: var(--ink-400); }

  /* 案例卡 */
  .case-grid { display: grid; gap: 20px; }
  @media (min-width: 900px) { .case-grid { grid-template-columns: repeat(2, 1fr); } }
  .case-card {
    background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--r-card);
    overflow: hidden; box-shadow: var(--sh-1); display: flex; flex-direction: column;
    transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  }
  .case-card:hover { transform: translateY(-2px); box-shadow: var(--sh-2); border-color: rgba(28, 106, 87, .32); }
  .case-media { overflow: hidden; }
  .case-media img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; transition: transform .45s cubic-bezier(.2, .7, .3, 1); }
  .case-card:hover .case-media img { transform: scale(1.03); }
  .case-body { padding: 22px; display: flex; flex-direction: column; gap: 12px; }
  .case-body .h3 a:hover { color: var(--brand-600); }
  .case-body p { font-size: 15px; color: var(--ink-700); }
  .case-foot { margin-top: auto; display: flex; align-items: center; justify-content: space-between; padding-top: 14px; border-top: 1px solid var(--line); }
  .case-foot .who { font-size: 13px; color: var(--ink-400); }
  .case-foot .go { font-size: 14px; font-weight: 600; color: var(--brand-900); display: inline-flex; align-items: center; gap: 6px; }
  .case-card:hover .case-foot .go { color: var(--brand-600); }
  .case-foot .go .arrow { transition: transform .2s ease; }
  .case-card:hover .case-foot .go .arrow { transform: translateX(4px); }

  /* 速览列表 */
  .brief-head { display: none; grid-template-columns: 64px 1fr 130px 120px 32px; gap: 16px; padding: 0 8px 12px; font-size: 13px; color: var(--ink-400); border-bottom: 1px solid var(--line); }
  @media (min-width: 900px) { .brief-head { display: grid; } }
  .brief-list { border-top: 1px solid var(--line); }
  @media (min-width: 900px) { .brief-list { border-top: 0; } }
  .brief-item {
    display: grid; gap: 8px; padding: 20px 8px; border-bottom: 1px solid var(--line);
    transition: background .2s ease, padding .2s ease;
  }
  .brief-item:hover { background: rgba(255, 255, 255, .8); }
  @media (min-width: 900px) {
    .brief-item { grid-template-columns: 64px 1fr 130px 120px 32px; align-items: center; gap: 16px; }
    .brief-item:hover { padding-left: 14px; padding-right: 14px; }
  }
  .brief-num { font-family: var(--mono); font-size: 13px; color: var(--ink-400); }
  .brief-title { font-family: var(--serif); font-size: 17px; font-weight: 700; line-height: 1.45; transition: color .2s ease; }
  .brief-item:hover .brief-title { color: var(--brand-600); }
  .brief-title::after {
    content: ""; display: block; width: 0; height: 2px; margin-top: 5px;
    background: var(--accent); border-radius: 2px; transition: width .24s cubic-bezier(.2, .7, .3, 1);
  }
  .brief-item:hover .brief-title::after { width: 42px; }
  .brief-cat { font-size: 13px; color: var(--brand-600); }
  .brief-time { font-family: var(--mono); font-size: 13px; color: var(--ink-400); }
  .brief-go { display: none; color: var(--ink-400); transition: color .2s ease, transform .2s ease; }
  @media (min-width: 900px) { .brief-go { display: block; } }
  .brief-item:hover .brief-go { color: var(--brand-900); transform: translateX(4px); }

  /* 信任深色块 */
  .ink-block { background: var(--ink-block); color: #F2F1EC; }
  .ink-block .eyebrow { color: var(--accent); }
  .ink-block .h2 { color: #F7F5F0; }
  .trust-grid { display: grid; gap: 24px; margin-top: 34px; }
  @media (min-width: 640px) { .trust-grid { grid-template-columns: repeat(2, 1fr); } }
  @media (min-width: 1024px) { .trust-grid { grid-template-columns: repeat(4, 1fr); gap: 32px; } }
  .trust-item { padding-top: 18px; border-top: 1px solid var(--line-dark); }
  .trust-item .label { font-family: var(--serif); font-size: 20px; font-weight: 700; color: #F7F5F0; }
  .trust-item p { margin-top: 8px; font-size: 14px; color: rgba(242, 241, 236, .72); line-height: 1.75; }
  .trust-quote {
    font-family: var(--serif); font-size: clamp(20px, 2.6vw, 28px); font-weight: 700;
    line-height: 1.5; color: #F7F5F0; max-width: 860px; margin-top: 18px;
  }
  .trust-quote .hl { background: linear-gradient(transparent 62%, rgba(200, 244, 92, .45) 62%); }
  .trust-source { margin-top: 14px; font-size: 13px; color: rgba(242, 241, 236, .6); }

  /* FAQ */
  .faq-grid { display: grid; gap: 0; }
  @media (min-width: 1024px) { .faq-grid { grid-template-columns: 1fr 1fr; column-gap: 48px; } }
  .faq-item { border-bottom: 1px solid var(--line); }
  .faq-q {
    width: 100%; display: flex; align-items: flex-start; justify-content: space-between; gap: 16px;
    padding: 22px 0; text-align: left;
    font-family: var(--serif); font-size: 18px; font-weight: 700; line-height: 1.5; color: var(--ink-900);
    transition: color .2s ease;
  }
  .faq-q:hover { color: var(--brand-600); }
  .faq-icon {
    flex-shrink: 0; width: 24px; height: 24px; margin-top: 3px;
    display: grid; place-items: center; color: var(--brand-900);
    transition: transform .24s cubic-bezier(.2, .7, .3, 1);
  }
  .faq-icon svg { width: 14px; height: 14px; }
  .faq-item.is-open .faq-icon { transform: rotate(45deg); }
  .faq-a { max-height: 0; overflow: hidden; transition: max-height .26s cubic-bezier(.2, .7, .3, 1); }
  .faq-a p { padding: 0 34px 22px 0; font-size: 15px; color: var(--ink-700); }

  /* CTA */
  .cta-band { background: var(--brand-900); color: #F2F1EC; border-radius: var(--r-card); padding: 40px 24px; text-align: center; }
  @media (min-width: 768px) { .cta-band { padding: 56px 48px; } }
  .cta-band .h2 { color: #F7F5F0; max-width: 760px; margin: 0 auto; }
  .cta-band p { margin-top: 16px; color: rgba(242, 241, 236, .78); max-width: 620px; margin-left: auto; margin-right: auto; }
  .cta-actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 28px; }

  /* 页脚 */
  .site-footer { background: var(--ink-block); color: #F2F1EC; padding: 60px 0 26px; margin-top: 0; }
  .footer-grid { display: grid; gap: 32px; }
  @media (min-width: 640px) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
  @media (min-width: 1024px) { .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; } }
  .footer-brand { font-family: var(--serif); font-size: 20px; font-weight: 800; color: #F7F5F0; }
  .footer-desc { margin-top: 12px; font-size: 14px; color: rgba(242, 241, 236, .66); line-height: 1.8; max-width: 320px; }
  .footer-title { font-size: 13px; letter-spacing: .12em; color: rgba(242, 241, 236, .5); margin-bottom: 14px; }
  .footer-link { display: block; font-size: 14px; color: rgba(242, 241, 236, .78); padding: 5px 0; transition: color .2s ease; }
  a.footer-link:hover { color: var(--accent); }
  .footer-bottom {
    margin-top: 44px; padding-top: 20px; border-top: 1px solid var(--line-dark);
    display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between;
    font-size: 13px; color: rgba(242, 241, 236, .5);
  }

  /* 入场动效 */
  .reveal { opacity: 0; transform: translateY(16px); transition: opacity .4s cubic-bezier(.2, .7, .3, 1), transform .4s cubic-bezier(.2, .7, .3, 1); }
  .reveal.in { opacity: 1; transform: none; }
  @media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 0; transform: none; transition: opacity .25s linear; }
    .reveal.in { opacity: 1; }
    * { scroll-behavior: auto !important; }
    .case-card:hover .case-media img { transform: none; }
    .rhythm-card:hover, .case-card:hover { transform: none; }
  }